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WO2020148387A1 - Electronics box for rotating electrical machine of a vehicle comprising nested retaining members - Google Patents

Electronics box for rotating electrical machine of a vehicle comprising nested retaining members Download PDF

Info

Publication number
WO2020148387A1
WO2020148387A1 PCT/EP2020/051024 EP2020051024W WO2020148387A1 WO 2020148387 A1 WO2020148387 A1 WO 2020148387A1 EP 2020051024 W EP2020051024 W EP 2020051024W WO 2020148387 A1 WO2020148387 A1 WO 2020148387A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
cover
electronic box
support
retaining member
Prior art date
Application number
PCT/EP2020/051024
Other languages
French (fr)
Inventor
Julien Malbec
Victor Le Roux
Jean Vivion
Original Assignee
Valeo Equipements Electriques Moteur
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur filed Critical Valeo Equipements Electriques Moteur
Publication of WO2020148387A1 publication Critical patent/WO2020148387A1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits

Definitions

  • Electronic box for a rotating electrical machine of a vehicle comprising nested retaining members
  • the present invention relates to electronic boxes for vehicle rotating electrical machines comprising electronic components for the command and control of the rotating electrical machine.
  • An electronic box includes a housing and a cover which are attached to each other.
  • a connection card is mounted in the box to connect various electronic components such as power modules or command and control module.
  • connection board may be a printed circuit board PCB which stands for “printed circuit board”, or a board comprising overmolded traces or an electronic card comprising electronic components and further comprising printed traces.
  • PCB printed circuit board
  • connection card includes for each fixing size, a fixing passage hole of the order of 10mm in diameter.
  • the mounting dimensions of the housing include on the one hand a tapped hole of 3mm, a thickness of the insert and the overmolding equivalent to approximately 6mm and finally a clearance of mounting imm between the connection board and the plastic overmolded on the threaded insert.
  • motor vehicles require more and more digital or / and analog functions and security, thus involving more and more electronic components fixed on or in the connection card.
  • an electronic box for a rotating electrical machine of a motor vehicle comprising:
  • the housing comprising an opening and a peripheral wall around the opening, the peripheral wall comprising a retaining member
  • the cover comprising: - a cover wall for closing the opening of the case, the cover wall comprising an elastic support portion,
  • the retaining member extending from the elastic support portion, the retaining member having a shape complementary to the retaining member of the housing and in that the member retaining the cover is fitted with the housing retaining member to retain the cover in a direction opposite to a closing direction of the cover against the housing and in which, one of the two retaining members comprises a housing comprising a stop surface and the other retaining member comprises: - a support tab,
  • protuberance extending from the support tab, the protuberance comprising at least a part in the housing and comprising:
  • the contact surface being in contact with the stop surface making it possible to retain the cover in the direction opposite to a direction of insertion of the protuberance into the housing corresponding to the direction of closure of the housing by the cover ,
  • Such an electronic box makes it possible to reduce the fixing size in order to reduce the volume of the fixing hole of the connection board in order to be able to add electronic components.
  • such a housing retaining member extends in the peripheral wall and not in the useful volume of the housing and on the other hand that the retaining member is the housing or the support lug with the 'protuberance, the volume of the retaining member is less voluminous than the volume of the fixing space of the case to receive a fixing screw.
  • the elastic support portion makes it possible to use a volume of the existing cover and to reduce the size of the retaining members by using its elasticity so that the two retaining members exert a force against each other.
  • the retaining members would also have to have an additional elastic length in order to be able to deform and exert a force.
  • the device according to the invention can also have one or more of the characteristics below, considered individually or according to all the technically possible combinations:
  • the two retaining members comprise a ramp surface to facilitate the insertion of the protuberance into the housing.
  • the ramp surface makes it possible to facilitate assembly by deforming the elastic support portion to allow insertion of the protuberance by rubbing against a wall of the other retaining member in the housing of the other retaining member. Without this ramp, the elastic support portion would have to be prestressed so that the protuberance can slide against a wall of the retaining member comprising the housing.
  • the electronic box comprises a connection card mounted in the box.
  • the covering wall and the cover retaining member are obtained from a molding of PBT which is the acronym for poly (butylene terephthalate) which is a thermoplastic semi-crystalline polymer forming part of the family of polyesters.
  • the peripheral wall of the housing is molded from PBT.
  • the PBT material is loaded increasing the rigidity of the peripheral wall and the retaining member of the housing and the covering wall and the retaining member of the cover.
  • such material is very hard, for example PBT GF 30 or 40 material has a tensile elastic modulus of about 3.4 GPa and a compressive modulus of about 2.8 GPa.
  • This material has the advantage of having a resistance to impact and thermal stresses which can range from -40 ° C to 140 ° C.
  • the elastic support portion is of the same material as the holding member.
  • the protuberance comprises a second surface in abutment against a peripheral surface of the housing. This allows the cover to be wedged to the housing to reduce vibrations and thus have less noise. In addition, this makes it possible to limit the friction between the abutment surface and the contact surface which may produce premature wear.
  • the support tab is elastic and is elastically deformed to exert a force of the protuberance on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion.
  • substantially perpendicular is meant in a direction + or - 10 ° with respect to 90 °.
  • the support lug is elastic so that the protuberance bears on a peripheral surface of the housing allows on the one hand to wedge the cover to the housing to reduce vibrations and thus have less noise and on the other hand to reduce a corrugation of the elastic support portion.
  • the support makes it possible to limit the friction between the abutment surface and the contact surface which can produce premature wear.
  • the reduction of the corrugation makes it possible to simplify the mounting of the cover on the housing while reducing the elastic deformation of the elastic support portion and therefore reduce the stresses in the elastic support portion to reduce the risk of breaking the portion of elastic support, in particular by breaking or plastically deforming the elastic support portion.
  • the support leg comprises two elastic side arms each extending from the elastic support portion and the protuberance is located between the two elastic side arms.
  • the two arms make it possible to increase the elastic length of the support leg between the elastic support portion and the fact that the protuberance is located between the two arms makes it possible to balance the forces and therefore the deformations of the support leg.
  • the two elastic lateral arms are elastically deformed to exert a force of the protuberance on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion.
  • the support leg comprises a third resilient central arm and two resilient beams connecting each lateral arm to the central arm, the protuberance extending from the central arm towards the housing.
  • the central arm makes it possible to increase the length of the elastic part of the fixing lug of the retaining member between the elastic support portion and the protuberance while balancing the forces.
  • Each of the two beams also makes it possible to deform and make it possible to apply a force of the bearing surface against the abutment surface.
  • the elastic central arm is elastically deformed to exert a force of the protuberance on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion.
  • the beams are elastically deformed to exert a force of the protuberance both on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion and on the abutment surface of the housing. in a direction of insertion.
  • each beam comprises on each side a fillet to be connected to the central arm and to a lateral arm.
  • the support leg is elastic and is elastically deformed to exert a force of the contact surface against the stop surface.
  • the covering wall comprises a rigid central portion which is thicker than the elastic support portion and more rigid than the elastic support portion.
  • the cover comprises a reinforcing wall extending from the covering wall in an insertion direction forming a border between the rigid central portion and the elastic support portion.
  • the reinforcing wall extends into the housing. According to a variant of this implementation, the reinforcing wall extends outwardly in the direction opposite to the direction of insertion.
  • the central portion of the covering wall comprises honeycomb ribs to increase its rigidity with respect to the elastic support portion.
  • the covering wall comprises a plating portion pressed against an edge of the peripheral wall of the casing and in that the plating portion is thicker than the elastic support portion.
  • the plating portion is of the same thickness as the central portion.
  • the covering wall comprises a plating portion pressed against an edge of the peripheral wall of the housing and in that the covering wall comprises a recess between the elastic support portion and the plating portion such that there is a clearance between the elastic support portion and the edge of the peripheral wall.
  • the housing comprises several retaining members and the cover comprises one retaining member per housing retaining member.
  • the peripheral wall comprises five retaining members distributed around the opening of the housing.
  • the covering wall comprises between each elastic support portion, a plating portion pressed against an edge of the peripheral wall.
  • the covering wall comprises an opening, the electronic box comprising a fixing screw passing through the opening of the cover and being screwed to press the cover against the box.
  • the opening passes through the rigid central portion.
  • the electronic box comprises a column screw, in particular a metal column screw, screwed with the fixing screw.
  • the column screw comprises a threaded thread and can be overmolded by a plastic material forming the peripheral wall.
  • the column screw rests against a back of the case, the back comprising an opening and the fixing screw passes through the opening in the back and is screwed to the column screw to thus press the cover against an edge of the peripheral wall of the housing.
  • the box comprises a metal support against which the box is mounted, the support being screwed to the screw-column.
  • the support is a heat sink comprising cooling fins and a base comprising a threaded hole in which the column screw is screwed.
  • the tapped hole is made in a tapping insert and the fixing screw is screwed to press the cover against the housing.
  • the screw is a self-tapping screw fixed in the tapping insert forming a tapping in the tapping insert to press the cover against the housing.
  • the heat sink is metallic.
  • the box further comprises a module mounted against the surface of the heat sink and located in the box and in that the tapping insert also enables the module to be fixed to the support and to the box.
  • the cover comprises a connector molded by the material of the covering wall
  • the box comprises a connector connected to the connector of the cover, the connector of the cover being adapted to be connected to an electrical connector of the motor vehicle.
  • the opening of the cover is located between the center of the cover and the connectors.
  • the contact surface is inclined relative to the stop surface.
  • an angle having a value between S and 7 °, is formed between the contact surface and the stop surface.
  • the protuberance is inside the case and the housing is open towards the inside of the case. This makes it possible to increase the difficulty in disengaging the retaining members nested with one another.
  • the protuberance is outside the case and the housing is open towards the outside of the case. This makes it possible to be able to disengage the retaining members, in particular with the help of a specific tool, more easily than in the previous embodiment.
  • the case comprises the retaining member comprising the housing and the cover comprises the retaining member comprising the support tab and the protuberance.
  • the housing comprises the retaining member comprising the support tab and the protuberance
  • the retaining member and the cover comprises comprising the housing.
  • the protuberance comprises a recess opening out on the contact surface to improve homogeneity of the thickness of the protuberance.
  • the invention further relates to an electric machine comprising:
  • Figure 1 shows a perspective view of an example of a first embodiment of part of an electronic box.
  • Figure 2 shows a perspective view of the housing 1 of the example shown in Figure 1.
  • FIG. B Figure 3 shows a perspective view of a portion of the cover 2 of the example shown in Figure 1.
  • Figure 4 shows a perspective view of part of the housing 1 of Figure 2 showing one of the five retaining members 110.
  • Figure 5 shows a section of the holder 110 shown in Figure 4.
  • FIG. 6 represents a perspective view of part of the cover 2 shown in FIG. 1 comprising a retaining member 21.
  • FIG. 7 represents a section of part of the electronic box A of FIG. 1 at the level of the male and female retaining members.
  • Figure 8 shows a section of part of the cover 2 shown in Figure 2.
  • FIG. 9 represents a part of the electronic box according to the example of the first embodiment.
  • FIG. 10 represents a section of the electronic box of the example of the first embodiment.
  • FIG. 11 represents another section of the electronic box of the example of the first embodiment.
  • identical or similar elements are identified by identical reference signs in all of the figures.
  • FIG. 1 represents a perspective view of an example of a first embodiment of a part of an electronic box A for a rotary electrical machine of a motor vehicle.
  • Electronic box A includes box 1.
  • Figure 2 shows a perspective view of the housing 1 of the example shown in Figure 1.
  • the housing 1 comprises an opening 10 and a peripheral wall 11 around the opening 10.
  • the peripheral wall 11 comprises a retaining member 110.
  • the peripheral wall 11 comprises in this example five retaining members 110 but may comprise more or less. .
  • the electronic box A further comprises a cover 2 fixed to the box 1.
  • Figure 3 shows a perspective view of a portion of the cover 2 of the example shown in Figure 1.
  • the cover 2 comprises a cover wall 20 to close the opening 10 of the housing 1.
  • the cover 2 can comprise a connector molded by the material of the covering wall 20.
  • the cover 2 comprises a duct 26 for inserting an electrical plug of an electrical connector of the motor vehicle electrically connected to the connectors of the cover 2.
  • the electronic box A can include a connector 7 comprising a box plug connected to a cover plug electrically connected to the connectors of the cover 2.
  • FIG. 11 shows a section of the electronic box A comprising the connector 7.
  • the connector 7 is offset with respect to the connections of the cover 2 in the chimney 26.
  • the covering wall 20 comprises an elastic support portion 200.
  • the covering wall 20 comprises at least as many elastic support portions 200 as the number of retaining members 110 of the peripheral wall 11, in in this case, the covering wall 20 comprises five portions of elastic support 200.
  • the retaining members of the cover 21 and of the housing 110 are distributed around the opening of the housing 1.
  • the cover 2 further comprises a retaining member 21 extending from the elastic support portion 200.
  • the retaining member 21 of the cover 2 has a shape complementary to the retaining member 110 of the housing 1.
  • the retaining member maintaining 21 of the cover 2 is fitted with the retaining member 110 of the housing 1 to retain the cover 2 in a direction opposite to a direction of closing of the opening 10 by the cover 2 against the housing 1.
  • the covering wall 20 and the retaining member 21 of the cover 2 can be obtained from a molding of PBT which is the acronym for polybutylene terephthalate which is a thermoplastic semi-crystalline polymer belonging to the family of polyesters.
  • the peripheral wall of the housing 1 can also be molded in PBT.
  • the PBT material of the cover wall 20, of the retaining member 21 and of the peripheral wall of the housing 1 is loaded, in particular the material is of PBT GF 30 having an elastic modulus in tension of about 3.4 GPa and a compression modulus of about 2.8 GPa.
  • This material increases the rigidity of the peripheral wall 11, of the retaining member 110 of the housing 1, of the covering wall 20 and of the retaining member 21 of the cover 2.
  • One of the two retaining members 110 forms a first type of retaining member called female retaining member and the other retaining member 21 forms a second type of retaining member called male.
  • the female retaining member 110 comprises a housing 111 and the male retaining member 21 comprises a support tab 210 and a protuberance 211 extending from the support tab 210.
  • the retaining members 110 of the housing are of the female type and the retaining members 21 of the cover 2 are of the male type.
  • the cover retaining members are of the female type and the housing retaining members are of the male type.
  • the various characteristics described below concerning the holding members also apply to this embodiment, not shown.
  • at least one of the housing 1 retaining members is of the male type fitted with the cover retaining member 2 which is of the female type.
  • the housing 111 of the example of this embodiment is more particularly visible in FIG. 4.
  • Figure 4 is a perspective view of part of the housing 1 of Figure 2 showing one of the five retainers 110.
  • the housing 111 is open towards the interior of the housing 1 and the retaining member 21 of the cover 2 is inside the housing 1.
  • the housing 111 comprises a stop surface 112.
  • the stop surface 112 is more particularly visible in FIG. 5.
  • FIG. 5 represents a section of the retaining member 110 shown in FIG. 4.
  • the retaining member 21 comprising a support tab 210 and a protuberance 211 is therefore a retaining member 21 of the cover 2.
  • the protuberance 211 includes at least a part in the housing 111.
  • FIG. 7 represents a section of part of the electronic box A of FIG. 1 at the level of the male and female retaining members. One can see, in this figure 7, part of the protuberance 211 in the housing 111.
  • the protuberance 211 comprises a contact surface 2112, the contact surface 2112 being in contact with the stop surface 112 making it possible to retain the cover 2 in the direction opposite to a direction of insertion of the protuberance 211 in the housing 111 corresponding to the direction of closure of the housing 1 by the cover 2.
  • the contact surface 2112 is inclined with respect to the stop surface 112 at an angle of 4 °.
  • the contact surface 2112 has one end resting against a portion of the abutment surface 112.
  • the protuberance 211 comprises a recess 2113 opening onto the contact surface 2112. This recess makes it possible to form a homogeneous thickness of the protuberance 211.
  • the protuberance 211 comprises a ramp surface 2113 inclined with respect to an insertion direction in order to progressively elastically deform the elastic support portion 200 when the housing 1 is closed by the cover 2 in the insertion direction.
  • FIG. 6 represents a perspective view of part of the cover 2 shown in FIG. 1 comprising a retaining member 21.
  • the protuberance 211 may include a second surface 2114 in abutment against a peripheral surface 114 of the housing 111.
  • each protuberance 211 of the retaining member 21 is in abutment against the abutment surface 212 and the peripheral surface 114 of the housing 111.
  • the support tab 210 may be resilient and be elastically deformed to exert a force of the protuberance 211 on the peripheral surface 114 of the housing 111 in a direction substantially perpendicular to the direction of insertion.
  • the support tab 210 is elastic and the ramp surface 2113 deforms the support tab 211 in a direction substantially perpendicular to the direction of insertion during the insertion of the holding member 212 against.
  • the peripheral wall 11 comprises a ramp surface 113 for progressively deforming, with the ramp surface 2113, the support tab 210 in a direction substantially perpendicular to the direction of insertion during insertion. of the retaining member 212. The force of the peripheral wall 11, during insertion, on the support tab 210 will further deform the elastic support portion 200.
  • the housing 111 can be formed in the thickness of the peripheral wall 11.
  • the retaining member 110 forms on the external peripheral surface of the peripheral wall, external projections to form the peripheral surface. 114 of housing 111.
  • the peripheral wall 11 may include an edge 1102 perpendicular to the direction of insertion of the cover 2 to close the housing 1 to allow the cover 2 to press against the edge 1102 of the peripheral wall 11 of the housing 1.
  • the retaining member 110 comprises a projection portion 115 forming a projection outwardly relative to the edge 1102. This portion 115 makes it possible to form in the thickness of the peripheral wall 11, the ramp surface 113 of the retaining member but also to have a 210-step support leg too long.
  • the cover 2 comprises a notch 25 in the plastic support portion 200, matching the shape of the protruding portion 115. This makes it possible to further reduce the size of the support legs, in particular to allow housing of electronic components or electrical traces under the retainer 21.
  • the support leg 210 may include two elastic side arms 2100 and the protuberance is located between the two elastic side arms 2100.
  • the two elastic side arms 2100 each extend from the portion. elastic support 200.
  • the support leg 210 may include a third elastic central arm 2101 and two elastic beams 2102 connecting each side arm 2100 to the central arm 2101 and in which the protuberance 211 extends from the central arm 2101 towards the housing 111.
  • the support leg 210 comprises two elastic beams 2102 which have a curved shape each comprising on each side a fillet to be connected to the central arm 2101 and to the lateral arm 2100 from which he's stretching.
  • the support tab 210 may be resilient and be elastically deformed to exert a force of the contact surface 2112 against the abutment surface 1112 of the housing.
  • the beams 2102 are elastically deformed to exert a force of the protuberance 211 both by the second surface 2114 in abutment against the peripheral surface 114 of the housing in a direction substantially perpendicular to the direction of insertion and by its first contact surface 2112 against the abutment surface 112 of the housing 111 in an insertion direction.
  • the covering wall 20 may include a rigid central portion 201 thicker than the elastic support portion 200 and less elastic than the elastic support portion.
  • FIG. 8 represents a section of part of the cover 2 shown in FIG. 2 in which the covering portion 20 comprises a rigid central portion 201 comprising reinforcing ribs 2010.
  • the reinforcing ribs 2010 form a thickness on the central portion rigid 201 larger than the elastic support portion 200.
  • the ribs 2010 have in this case a shape of honeycomb particularly visible in Figure 1.
  • the cover 2 may include a reinforcing wall 22 extending from the cover wall 20 in an insertion direction forming a border between the rigid central portion 201 and the elastic support portion 200.
  • the cover 2 comprises a reinforcing wall which extends into the housing 1 in an insertion direction forming a border between the rigid central portion 201 and the elastic support portion 200 comprising portions which along the peripheral wall 11.
  • the reinforcing wall 22 forms a periphery surrounded by the peripheral wall 11 of the box 1.
  • FIG. 9 represents part of the electronic box A.
  • the covering wall 20 may include a plating portion 202 pressed against the edge 1102 of the peripheral wall 11 of the housing 1.
  • the covering wall 20 comprises a recess 2002 between the plastic support portion 200 and the plating portion 202 such that there is a clearance d1 between the elastic support portion 200 covering the edge 1102 and the edge 1102 of the peripheral wall 11.
  • This clearance dl allows in particular the elastic support portion 200 to deform in order to press the contact surface 2112 against the stop surface 112.
  • the electronic box A can further comprise a metal support 4 against which the box 1 is mounted.
  • FIG. 10 and FIG. 11 each show a section of the electronic box A of the example of the first embodiment comprising the support 4.
  • the covering wall 20 may comprise an opening 23 and the electronic box may comprise a fixing screw 3 passing through the opening 23 of the cover 2, screwed to press the cover 2 against the housing 1.
  • the covering wall comprises three openings 23 passing through the rigid central portion 20 and two notches 235 located in the plating portion 202.
  • one of the three openings is a central opening allowing the fixing of the cover 2 to the support 4.
  • This central opening is located between the center of the cover. 2 and the chimney 26.
  • the electronic box A further comprises a cover-indirect support fixing screw 3 passing through this opening, visible in FIG. 1 and a column screw 53 screwed to the support 4.
  • FIG. 11 represents a section of the electronic box in the cover-indirect support fixing screw 3.
  • the indirect cover-support fixing screw 3 comprises a head resting on a border surrounding the central opening of the cover 2.
  • the housing 1 comprises a visible central passage well 13 in figure 2, crossed by the cover-indirect support fixing screw screwed into the screw-pillar 53.
  • the electronic box A comprises a cover-housing fixing screw 31 passing through one of the three openings 23 for fixing the cover 2 to the housing 1.
  • the cut shown in FIG. 11 also passes through the cover-fixing screw.
  • Housing 1 comprises a threaded well 131 comprising, for example, a threaded insert, located on the peripheral wall 11 of the housing 1.
  • the cover-housing fixing screw 31 is screwed into this threaded well 131.
  • This fixing screw 31 is adjacent to the connector 7 shown in FIG. 11. This improves the contact between the cover plug and the connector housing plug 7 to reduce the loss of electrical connection between its plugs by vibrations of the electronic box A.
  • the electronic box A further comprises a direct housing-support fixing screw 34 visible in FIG. 1 and the housing 1 further comprises a well 134 visible in FIGS. 1 and 2 projecting outwardly from the peripheral wall 11.
  • the direct box-support fixing screw 34 passes through the well 134 and is screwed into a tapped hole in the support 4.
  • the electronic box A further comprises three indirect box-support fixing screws 35 and three column screws 5 screwed to the support 4 and comprising an internal thread.
  • Two of the three indirect housing-support fixing screws 35 each have a head located in one of the two notches 235 of the cover 2.
  • the housing 1 further comprises on its peripheral wall 11, two support wells 135 visible in FIG. 2 and FIG. 10.
  • FIG. 10 shows a section passing through these two indirect housing-support fixing screws 35.
  • Each of these two indirect housing-support fixing screws 35 comprises a head resting on one end of the corresponding bearing well 135. and crosses the support well 135 corresponding.
  • Each of the two indirect housing-support fixing screws 35 being screwed to the tapping of the corresponding column screw 5.
  • the two column screws 5 are each resting on the other end of the corresponding bearing well 135.
  • the third indirect housing-support fixing screw 35 passes through the third opening 23 of the housing 21 and comprises a head resting on a third well 135 visible in FIG. 2 extending into the housing from a bottom of the housing 2.
  • the third column screw comprises a tapped hole screwed to the third indirect housing-support fixing screw 35 and a thread screwed into a hole in the support 4.
  • the support 4 therefore comprises threaded holes to each receive one of the column screws 5.
  • the support 4 is a metallic heat sink comprising cooling fins 41 and a base 42 comprising each threaded hole in which the column screws 5 are screwed.
  • the support is in this example in an aluminum alloy.
  • the electronic box A can include a connection card mounted in the box or forming the bottom of the box and electronic components mounted on the electronic card.
  • the electronic box A can also include a protective gel or paste between the electronic components and the cover to protect them.
  • the electronic box A can also include an electronic module mounted between the bottom of the box and the support.
  • the electronic module comprises electronic components protected by walls of the module.
  • the electronic box A comprises electronic power modules 6 mounted between the bottom of the box 1 and the support 4.
  • the term “power module” is understood to mean the electronic modules comprising electronic components for controlling the power. supplying the phases of a stator of a rotating electrical machine or even supplying a coil of a rotor of the rotating electrical machine.
  • each electronic power module 6 is also fixed to the support 4 by one of the column screws 5.
  • another power module screw 6, not shown, allows the module 6 to be fixed to the. support 4.
  • the invention is not limited to the embodiments described with reference to the figures and variants could be envisaged without departing from the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Casings For Electric Apparatus (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention relates to an electronics box for a rotating electrical machine of a motor vehicle, comprising a casing (1) comprising a peripheral wall comprising a retaining member, and a cover (2) fastened to the casing, the cover (2) comprising a covering wall (20) for closing the casing, the covering wall (20) comprising a resilient support portion (200), a retaining member (21) extending from the resilient support portion (200), the retaining member (21) having a shape that is complementary to that of the retaining member of the casing, wherein one of the two retaining members comprises a housing comprising an abutment surface and the other retaining member comprises a support tab (210) and a protrusion (211) extending from the support tab (210) while having a portion in the housing (22) and comprising a contact surface (212) in contact with the abutment surface and a ramp surface (2113).

Description

Boîte électronique pour machine électrique tournante d'un véhicule comprenant des organes de maintien emboîtés Electronic box for a rotating electrical machine of a vehicle comprising nested retaining members
DOMAINE TECHNIQUE La présente invention est relative aux boîtes électroniques des machines électriques tournante de véhicule comprenant des composants électroniques pour la commande et le contrôle de la machine électrique tournante TECHNICAL FIELD The present invention relates to electronic boxes for vehicle rotating electrical machines comprising electronic components for the command and control of the rotating electrical machine.
Une boîte électronique comprend un boîtier et un couvercle qui sont fixés l'un à l'autre. Généralement une carte de connexion est montée dans le boîtier pour relier différents composants électroniques tels que des modules de puissances ou module de commande et de contrôle. An electronic box includes a housing and a cover which are attached to each other. Generally a connection card is mounted in the box to connect various electronic components such as power modules or command and control module.
La carte de connexion peut être une carte de circuit imprimé PCB acronyme de l'anglais « printed circuit board », ou une carte comprenant des traces surmoulées ou une carte électronique comprenant des composants électroniques et comprenant en outre des traces imprimées. The connection board may be a printed circuit board PCB which stands for “printed circuit board”, or a board comprising overmolded traces or an electronic card comprising electronic components and further comprising printed traces.
ÉTAT DE LA TECHNIQUE STATE OF THE ART
Pour fixer le couvercle au boîtier, il est connu d'utiliser des vis de fixation traversant des inserts métalliques de compression dans le couvercle et vissées dans des inserts taraudés surmoulé par la partie plastique du boîtier. Notamment, il est connu d'utiliser plusieurs vis réparties pour fixer le couvercle au boîtier, de diamètre de trois millimètres. Des vis de diamètres de trois millimètres de diamètre nécessitent que le boîtier comprenne pour chaque vis, un encombrement de fixation de l'ordre de 10mm de diamètre. Cela implique que la carte de connexion comprenne pour chaque encombrement de fixation, un trou de passage de fixation de l'ordre de 10mm de diamètre. En effet, l'encombrement de fixation du boîtier comprend d'une part un trou taraudé de 3mm, une épaisseur de l'insert et du surmoulage équivalent à environ 6mm et enfin un jeu de tolérance de montage d'imm entre la carte de connexion et le plastique surmoulé sur l'insert taraudé. Cependant, les véhicules automobiles demandent de plus en plus de fonction et de sécurité numérique ou/et analogique impliquant ainsi de plus en plus de composants électroniques fixée sur, ou dans la carte de connexion. En outre, il n'est parfois pas possible d'augmenter le volume global de la machine électrique et donc du boîtier électronique du fait du manque de place dans le véhicule. To fix the cover to the case, it is known to use fixing screws passing through metal compression inserts in the cover and screwed into threaded inserts overmolded by the plastic part of the case. In particular, it is known to use several distributed screws to fix the cover to the case, with a diameter of three millimeters. Screws with diameters of three millimeters in diameter require that the housing includes, for each screw, a fixing space of the order of 10 mm in diameter. This implies that the connection card includes for each fixing size, a fixing passage hole of the order of 10mm in diameter. Indeed, the mounting dimensions of the housing include on the one hand a tapped hole of 3mm, a thickness of the insert and the overmolding equivalent to approximately 6mm and finally a clearance of mounting imm between the connection board and the plastic overmolded on the threaded insert. However, motor vehicles require more and more digital or / and analog functions and security, thus involving more and more electronic components fixed on or in the connection card. In addition, it is sometimes not possible to increase the overall volume of the electrical machine and therefore of the electronic box due to the lack of space in the vehicle.
Il existe donc un besoin d'augmenter le volume utile du boîtier sans augmenter son volume global, pour augmenter le nombre de composants électroniques dans le boîtier et notamment pour pouvoir augmenter la surface utile de la carte de connexion. There is therefore a need to increase the useful volume of the box without increasing its overall volume, to increase the number of electronic components in the box and in particular to be able to increase the useful surface of the connection card.
Une solution pour diminuer cet encombrement est d'utiliser des vis auto-taraudeuse directement dans la matière plastique du boîtier pour diminuer le volume de fixation en supprimant l'insert. Cependant, il est apparu que du fait des contrastes thermiques que peut subir le véhicule, la matière plastique avec de telles vis ne permettait pas d'assurer une bonne fixation, notamment une fixation supportant 150 Newton à l'arrachement du couvercle au boîtier. Une autre solution aurait été réaliser une soudure laser plastique du couvercle sur le boîtier, cependant un tel procédé n'est pas stable et est très difficile à mettre en place et donc très coûteux. One solution to reduce this bulk is to use self-tapping screws directly in the plastic material of the housing to reduce the fixing volume by eliminating the insert. However, it appeared that due to the thermal contrasts which the vehicle may undergo, the plastic material with such screws did not make it possible to ensure good fixing, in particular a fixing supporting 150 Newtons when the cover was torn from the housing. Another solution would have been to carry out a plastic laser welding of the cover on the housing, however such a process is not stable and is very difficult to set up and therefore very expensive.
On constate qu'il existe un besoin de prévoir une solution de fixation du couvercle au boîtier pour augmenter le volume utile dans le boîtier de façon simple et peu coûteuse. Selon l'invention, on tend à satisfaire ce besoin en prévoyant une boîte électronique pour machine électrique tournante d'un véhicule automobile, comprenant : It is noted that there is a need to provide a solution for fixing the cover to the housing in order to increase the useful volume in the housing in a simple and inexpensive manner. According to the invention, one tends to satisfy this need by providing an electronic box for a rotating electrical machine of a motor vehicle, comprising:
- un boîtier, le boîtier comprenant une ouverture et une paroi périphérique autour de l'ouverture, la paroi périphérique comprenant un organe de maintien, a housing, the housing comprising an opening and a peripheral wall around the opening, the peripheral wall comprising a retaining member,
- un couvercle fixé au boîtier, le couvercle comprenant : - une paroi de recouvrement pour fermer l'ouverture du boîtier, la paroi de recouvrement comprenant une portion de support élastique, - a cover fixed to the case, the cover comprising: - a cover wall for closing the opening of the case, the cover wall comprising an elastic support portion,
- un organe de maintien s'étendant de la portion de support élastique, l'organe de maintien ayant une forme complémentaire avec l'organe de maintien du boîtier et en ce que l'organe de maintien du couvercle est emboîté avec l'organe de maintien du boîtier pour retenir le couvercle dans un sens opposé à un sens de fermeture du couvercle contre le boîtier et dans laquelle, un des deux organes de maintien comprend un logement comprenant une surface de butée et l'autre organe de maintien comprend : - une patte de support, a retaining member extending from the elastic support portion, the retaining member having a shape complementary to the retaining member of the housing and in that the member retaining the cover is fitted with the housing retaining member to retain the cover in a direction opposite to a closing direction of the cover against the housing and in which, one of the two retaining members comprises a housing comprising a stop surface and the other retaining member comprises: - a support tab,
- une excroissance s'étendant de la patte de support, l'excroissance comprenant au moins une partie dans le logement et comprenant : - a protuberance extending from the support tab, the protuberance comprising at least a part in the housing and comprising:
- une surface de contact, la surface de contact étant en contact avec la surface de butée permettant de retenir le couvercle dans le sens opposé à un sens d'insertion de l'excroissance dans le logement correspondant au sens de fermeture du boîtier par le couvercle, - a contact surface, the contact surface being in contact with the stop surface making it possible to retain the cover in the direction opposite to a direction of insertion of the protuberance into the housing corresponding to the direction of closure of the housing by the cover ,
- une surface rampe inclinée par rapport à une direction d'insertion pour déformer progressivement élastiquement la portion de support élastique lors de la fermeture du boîtier par le couvercle dans le sens d'insertion. a ramp surface inclined with respect to an insertion direction for progressively elastically deforming the elastic support portion when the housing is closed by the cover in the insertion direction.
Une telle boîte électronique permet de réduire l'encombrement de fixation pour diminuer le volume du trou de fixation de la carte de connexion afin de pouvoir ajouter des composants électroniques. Such an electronic box makes it possible to reduce the fixing size in order to reduce the volume of the fixing hole of the connection board in order to be able to add electronic components.
En effet, d'une part un tel organe de maintien du boîtier s'étend dans la paroi périphérique et non dans le volume utile du boîtier et d'autre part que l'organe de maintien soit le logement ou la patte de support avec l'excroissance, le volume de l'organe de maintien est moins volumineux que le volume de l'encombrement de fixation du boîtier pour recevoir une vis de fixation. Indeed, on the one hand such a housing retaining member extends in the peripheral wall and not in the useful volume of the housing and on the other hand that the retaining member is the housing or the support lug with the 'protuberance, the volume of the retaining member is less voluminous than the volume of the fixing space of the case to receive a fixing screw.
En outre, la portion de support élastique permet d'utiliser un volume du couvercle existant et de diminuer la taille des organes de maintien en utilisant son élasticité pour que les deux organes de maintien exercent une force l'un contre l'autre. En effet, sans la portion de support élastique, les organes de maintien devraient avoir en outre une longueur élastique supplémentaire pour pouvoir se déformer et exercer une force. In addition, the elastic support portion makes it possible to use a volume of the existing cover and to reduce the size of the retaining members by using its elasticity so that the two retaining members exert a force against each other. Indeed, without the elastic support portion, the retaining members would also have to have an additional elastic length in order to be able to deform and exert a force.
En outre cela permet de faire des économies de vis et d'inserts. In addition, it saves on screws and inserts.
Ainsi cela permet d'augmenter le volume utile du boîtier tout en ayant un moyen simple et peu coûteux. Le dispositif selon l'invention peut également présenter une ou plusieurs des caractéristiques ci-dessous, considérées individuellement ou selon toutes les combinaisons techniquement possibles : Thus this makes it possible to increase the useful volume of the box while having a simple and inexpensive means. The device according to the invention can also have one or more of the characteristics below, considered individually or according to all the technically possible combinations:
Selon un exemple les deux organes de maintien comprennent une surface rampe pourfaciliter l'insertion de l'excroissance dans le logement. According to one example, the two retaining members comprise a ramp surface to facilitate the insertion of the protuberance into the housing.
La surface rampe permet de faciliter le montage en déformant la portion de support élastique pour permettre l'insertion de l'excroissance en frottant contre une paroi de l'autre organe de maintien dans le logement de l'autre organe de maintien. Sans cette rampe, il faudrait précontraindre la portion de support élastique pour que l'excroissance puisse glisser contre une paroi de l'organe de maintien comprenant le logement. The ramp surface makes it possible to facilitate assembly by deforming the elastic support portion to allow insertion of the protuberance by rubbing against a wall of the other retaining member in the housing of the other retaining member. Without this ramp, the elastic support portion would have to be prestressed so that the protuberance can slide against a wall of the retaining member comprising the housing.
Selon un mode de réalisation, la boîte électronique comprend une carte de connexion montée dans le boîtier. According to one embodiment, the electronic box comprises a connection card mounted in the box.
Selon un mode de réalisation, la paroi de recouvrement et l'organe de maintien du couvercle sont issue d'un moulage en PBT qui est l'acronyme de poly(téréphtalate de butylène) qui est un polymère semi-cristallin thermoplastique faisant partie de la famille des polyesters. According to one embodiment, the covering wall and the cover retaining member are obtained from a molding of PBT which is the acronym for poly (butylene terephthalate) which is a thermoplastic semi-crystalline polymer forming part of the family of polyesters.
Selon un mode de réalisation, la paroi périphérique du boîtier est moulée en PBT. According to one embodiment, the peripheral wall of the housing is molded from PBT.
Selon exemple de ces deux derniers modes de réalisation, la matière PBT est chargée augmentant la rigidité de la paroi périphérique et l'organe de maintien du boîtier et la paroi de recouvrement et l'organe de maintien du couvercle. En outre, une telle matière est très dure, par exemple une matière PBT GF 30 ou 40 à un module élastique en traction d'environ 3,4 GPa et un module de compression d'environ 2,8 GPa. Cette matière à l'avantage d'avoir une résistance au choc et aux sollicitations thermiques pouvant aller de -40°C à 140°C. According to an example of these last two embodiments, the PBT material is loaded increasing the rigidity of the peripheral wall and the retaining member of the housing and the covering wall and the retaining member of the cover. Further, such material is very hard, for example PBT GF 30 or 40 material has a tensile elastic modulus of about 3.4 GPa and a compressive modulus of about 2.8 GPa. This material has the advantage of having a resistance to impact and thermal stresses which can range from -40 ° C to 140 ° C.
Selon un mode de réalisation, la portion de support élastique est de la même matière que l'organe de maintien. According to one embodiment, the elastic support portion is of the same material as the holding member.
Cela permet d'avoir une pièce plus simple de fabrication et donc moins coûteuse. This makes it possible to have a part that is easier to manufacture and therefore less expensive.
Selon un mode de réalisation, l'excroissance comprend une deuxième surface en butée contre une surface périphérique du logement. Cela permet de caler le couvercle au boîtier pour diminuer les vibrations et ainsi avoir moins de bruits. En outre cela permet de limiter les frottements entre la surface de butée et la surface de contact pouvant produire une usure prématurée. According to one embodiment, the protuberance comprises a second surface in abutment against a peripheral surface of the housing. This allows the cover to be wedged to the housing to reduce vibrations and thus have less noise. In addition, this makes it possible to limit the friction between the abutment surface and the contact surface which may produce premature wear.
Selon un mode de réalisation, la patte de support est élastique et est déformée élastiquement pour exercer une force de l'excroissance sur une surface périphérique du logement dans une direction sensiblement perpendiculaire à la direction d'insertion. According to one embodiment, the support tab is elastic and is elastically deformed to exert a force of the protuberance on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion.
Par sensiblement perpendiculaire on entend dans une direction + ou - 10° par rapport à 90°. By substantially perpendicular is meant in a direction + or - 10 ° with respect to 90 °.
Le fait que la patte de support soit élastique pour que l'excroissance prenne appui sur une surface périphérique du logement permet d'une part de caler le couvercle au boîtier pour diminuer les vibrations et ainsi avoir moins de bruits et d'autre part de diminuer une ondulation de la portion de support élastique. En outre, l'appui permet de limiter les frottements entre la surface de butée et la surface de contact pouvant produire une usure prématurée. The fact that the support lug is elastic so that the protuberance bears on a peripheral surface of the housing allows on the one hand to wedge the cover to the housing to reduce vibrations and thus have less noise and on the other hand to reduce a corrugation of the elastic support portion. In addition, the support makes it possible to limit the friction between the abutment surface and the contact surface which can produce premature wear.
Enfin, la réduction de l'ondulation permet de simplifier le montage du couvercle sur le boîtier tout en diminuant la déformation élastique de la portion de support élastique et donc diminuer les contraintes dans la portion de support élastique pour diminuer le risque de casser la portion de support élastique, notamment par rupture ou de déformer plastiquement la portion de support élastique. Finally, the reduction of the corrugation makes it possible to simplify the mounting of the cover on the housing while reducing the elastic deformation of the elastic support portion and therefore reduce the stresses in the elastic support portion to reduce the risk of breaking the portion of elastic support, in particular by breaking or plastically deforming the elastic support portion.
Selon un mode de réalisation, la patte de support comprend deux bras latéraux élastiques s'étendant chacune de la portion de support élastique et l'excroissance est située entre les deux bras latéraux élastiques. According to one embodiment, the support leg comprises two elastic side arms each extending from the elastic support portion and the protuberance is located between the two elastic side arms.
Les deux bras permettent d'augmenter la longueur élastique de la patte de support entre la portion de support élastique et le fait que l'excroissance soit située entre les deux bras permet d'équilibrer les forces et donc les déformations de la patte de support. The two arms make it possible to increase the elastic length of the support leg between the elastic support portion and the fact that the protuberance is located between the two arms makes it possible to balance the forces and therefore the deformations of the support leg.
Selon un exemple de ce mode de réalisation, les deux bras latéraux élastiques sont déformés élastiquement pour exercer une force de l'excroissance sur une surface périphérique du logement dans une direction sensiblement perpendiculaire à la direction d'insertion. According to an example of this embodiment, the two elastic lateral arms are elastically deformed to exert a force of the protuberance on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion.
Selon un exemple de ce mode de réalisation, la patte de support comprend un troisième bras central élastique et deux poutres élastiques reliant chaque bras latéral au bras central, l'excroissance s'étendant à partir du bras central vers le logement. Le bras central permet d'augmenter la longueur de la partie élastique de la patte de fixation de l'organe de maintien entre la portion de support élastique et l'excroissance tout en équilibrant les forces. Chacune des deux poutres permet en outre de se déformer et permettre d'appliquer une force de la surface d'appui contre la surface de butée. Selon un exemple de ce mode de réalisation, le bras central élastique est déformé élastiquement pour exercer une force de l'excroissance sur une surface périphérique du logement dans une direction sensiblement perpendiculaire à la direction d'insertion. According to an example of this embodiment, the support leg comprises a third resilient central arm and two resilient beams connecting each lateral arm to the central arm, the protuberance extending from the central arm towards the housing. The central arm makes it possible to increase the length of the elastic part of the fixing lug of the retaining member between the elastic support portion and the protuberance while balancing the forces. Each of the two beams also makes it possible to deform and make it possible to apply a force of the bearing surface against the abutment surface. According to an example of this embodiment, the elastic central arm is elastically deformed to exert a force of the protuberance on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion.
Selon un exemple de ce mode de réalisation, les poutres sont déformées élastiquement pour exercer une force de l'excroissance à la fois sur une surface périphérique du logement dans une direction sensiblement perpendiculaire à la direction d'insertion et sur la surface de butée du logement dans une direction d'insertion. According to an example of this embodiment, the beams are elastically deformed to exert a force of the protuberance both on a peripheral surface of the housing in a direction substantially perpendicular to the direction of insertion and on the abutment surface of the housing. in a direction of insertion.
Selon un exemple de ce mode de réalisation, chaque poutre comprend de chaque côté un congé pour être reliée au bras central et à un bras latéral According to an example of this embodiment, each beam comprises on each side a fillet to be connected to the central arm and to a lateral arm.
Cela permet de limiter les contraintes à la jonction entre les bras et la poutre. Selon un mode de réalisation, la patte de support est élastique et est déformée élastiquement pour exercer une force de la surface de contact contre la surface de butée. This makes it possible to limit the stresses at the junction between the arms and the beam. According to one embodiment, the support leg is elastic and is elastically deformed to exert a force of the contact surface against the stop surface.
Cela permet de diminuer la déformation élastique de la portion de support élastique et donc diminuer les contraintes dans la portion de support élastique pourdiminuer le risque de casser la portion de support élastique, notamment par rupture ou de déformer plastiquement la portion de support élastique. This makes it possible to reduce the elastic deformation of the elastic support portion and therefore reduce the stresses in the elastic support portion to reduce the risk of breaking the elastic support portion, in particular by breaking or of plastically deforming the elastic support portion.
Selon un mode de réalisation, la paroi de recouvrement comprend une portion centrale rigide plus épaisse que la portion de support élastique et plus rigide que la portion de support élastique. According to one embodiment, the covering wall comprises a rigid central portion which is thicker than the elastic support portion and more rigid than the elastic support portion.
Selon un exemple du mode de réalisation précédent, le couvercle comprend une paroi de renfort s'étendant de la paroi de recouvrement dans une direction d'insertion formant une frontière entre la portion centrale rigide et la portion de support élastique. According to an example of the previous embodiment, the cover comprises a reinforcing wall extending from the covering wall in an insertion direction forming a border between the rigid central portion and the elastic support portion.
Cela permet de contrôler la déformation de la paroi de recouvrement. This makes it possible to control the deformation of the covering wall.
Selon une mise en œuvre de cet exemple, la paroi de renfort s'étend dans le boîtier. Selon une variante de cette mise en œuvre, la paroi de renfort s'étend vers l'extérieur dans le sens opposé au sens d'insertion. According to one implementation of this example, the reinforcing wall extends into the housing. According to a variant of this implementation, the reinforcing wall extends outwardly in the direction opposite to the direction of insertion.
Selon un exemple de ce mode de réalisation, la portion centrale de la paroi de recouvrement comprend des nervures en nid d'abeilles pour augmenter sa rigidité par rapport à la portion de support élastique. According to an example of this embodiment, the central portion of the covering wall comprises honeycomb ribs to increase its rigidity with respect to the elastic support portion.
Selon un mode de réalisation, la paroi de recouvrement comprend une portion de plaquage plaquée contre un bord de la paroi périphérique du boîtier et en ce que la portion de plaquage est plus épaisse que la portion de support élastique. According to one embodiment, the covering wall comprises a plating portion pressed against an edge of the peripheral wall of the casing and in that the plating portion is thicker than the elastic support portion.
Selon un exemple des deux derniers modes de réalisation, la portion de plaquage est de la même épaisseur que la portion centrale. According to an example of the last two embodiments, the plating portion is of the same thickness as the central portion.
Selon une variante du mode de réalisation précédent, la paroi de recouvrement comprend une portion de plaquage plaquée contre un bord de la paroi périphérique du boîtier et en ce que la paroi de recouvrement comprend un décrochement entre la portion de support élastique et la portion de plaquage tel qu'il y a un jeu entre la portion de support élastique et le bord de la paroi périphérique. According to a variant of the previous embodiment, the covering wall comprises a plating portion pressed against an edge of the peripheral wall of the housing and in that the covering wall comprises a recess between the elastic support portion and the plating portion such that there is a clearance between the elastic support portion and the edge of the peripheral wall.
Selon un mode de réalisation, le boîtier comprend plusieurs organes de maintien et le couvercle comprend un organe de maintien par organe de maintien du boîtier. According to one embodiment, the housing comprises several retaining members and the cover comprises one retaining member per housing retaining member.
Selon un exemple de ce mode de réalisation, la paroi périphérique comprend cinq organes de maintien répartis autour de l'ouverture du boîtier. According to an example of this embodiment, the peripheral wall comprises five retaining members distributed around the opening of the housing.
Selon une mise en œuvre de ce mode de réalisation et du mode de réalisation précédent, la paroi de recouvrement comprend entre chaque portion de support élastique, une portion de plaquage plaquée contre un bord de la paroi périphérique. According to an implementation of this embodiment and of the previous embodiment, the covering wall comprises between each elastic support portion, a plating portion pressed against an edge of the peripheral wall.
Selon un mode de réalisation, la paroi de recouvrement comprend une ouverture, la boîte électronique comprenant une vis de fixation traversant l'ouverture du couvercle et étant vissée pour plaquer le couvercle contre le boîtier. According to one embodiment, the covering wall comprises an opening, the electronic box comprising a fixing screw passing through the opening of the cover and being screwed to press the cover against the box.
Selon un exemple de ce mode de réalisation et du mode de réalisation dans laquelle le boîtier comprend une portion central rigide, l'ouverture traverse la portion centrale rigide. According to an example of this embodiment and of the embodiment in which the case comprises a rigid central portion, the opening passes through the rigid central portion.
Selon un exemple de ce mode de réalisation, la boîte électronique comprend une vis colonnette, notamment une vis-colonnette métallique, vissée avec la vis de fixation. Selon une mise en œuvre de cet exemple, la vis-colonnette comprend un filetage taraudé et peut être surmoulé par une matière plastique formant la paroi périphérique. Selon une variante de cette mise en œuvre, la vis-colonnette est en appui contre un fond du boîtier, le fond comprenant une ouverture et la vis de fixation traverse l'ouverture du fond et est vissée à la vis colonnette pour plaquer ainsi le couvercle contre un bord de la paroi périphérique du boîtier. According to an example of this embodiment, the electronic box comprises a column screw, in particular a metal column screw, screwed with the fixing screw. According to one implementation of this example, the column screw comprises a threaded thread and can be overmolded by a plastic material forming the peripheral wall. According to a variant of this implementation, the column screw rests against a back of the case, the back comprising an opening and the fixing screw passes through the opening in the back and is screwed to the column screw to thus press the cover against an edge of the peripheral wall of the housing.
Selon un exemple de ce mode de réalisation, la boîte comprend un support métallique contre lequel est monté le boîtier, le support étant vissé à la vis-colonnette. According to an example of this embodiment, the box comprises a metal support against which the box is mounted, the support being screwed to the screw-column.
Cela permet d'avoir une chaîne de fixation métallique, c'est-à-dire de la vis métallique au support métallique pour permettre de résister à un arrachement en cas d'application d'une force de 150 Newton sur le couvercle. This makes it possible to have a metal fixing chain, that is to say from the metal screw to the metal support to make it possible to resist tearing in the event of application of a force of 150 Newton on the cover.
Selon une mise en œuvre de cette variante, le support est un dissipateur thermique comprenant des ailettes de refroidissement et une base comprenant un trou taraudé dans laquelle la vis-colonnette est vissée. According to an implementation of this variant, the support is a heat sink comprising cooling fins and a base comprising a threaded hole in which the column screw is screwed.
Par exemple, le trou taraudé est réalisé dans un insert de taraudage et la vis de fixation est vissée pour plaquer le couvercle contre le boîtier. For example, the tapped hole is made in a tapping insert and the fixing screw is screwed to press the cover against the housing.
Selon une caractéristique supplémentaire de cet exemple, la vis est une vis auto-taraudeuse fixée dans l'insert de taraudage formant un taraudage dans l'insert de taraudage pour plaquer le couvercle contre le boîtier. According to an additional characteristic of this example, the screw is a self-tapping screw fixed in the tapping insert forming a tapping in the tapping insert to press the cover against the housing.
Selon une caractéristique supplémentaire de la mise en œuvre de cette variante, le dissipateur est métallique. According to an additional characteristic of the implementation of this variant, the heat sink is metallic.
Selon une mise en œuvre de cette variante, la boîte comprend en outre un module monté contre la surface du dissipateur et situé dans le boîtier et en ce que l'insert de taraudage permet de fixer en outre le module au support et au boîtier. According to an implementation of this variant, the box further comprises a module mounted against the surface of the heat sink and located in the box and in that the tapping insert also enables the module to be fixed to the support and to the box.
Selon un mode de réalisation, le couvercle comprend une connectique surmoulée par la matière de la paroi de recouvrement, le boîtier comprend une connectique connectée à la connectique du couvercle, la connectique du couvercle étant adaptée à être reliée à un connecteur électrique du véhicule automobile. According to one embodiment, the cover comprises a connector molded by the material of the covering wall, the box comprises a connector connected to the connector of the cover, the connector of the cover being adapted to be connected to an electrical connector of the motor vehicle.
Selon un exemple de ce mode de réalisation et du mode de réalisation précédent, l'ouverture du couvercle est située entre le centre du couvercle et la connectique. Selon un mode de réalisation, la surface de contact est inclinée par rapport à la surface de butée. According to an example of this embodiment and of the previous embodiment, the opening of the cover is located between the center of the cover and the connectors. According to one embodiment, the contact surface is inclined relative to the stop surface.
Cela permet d'empêcher que la surface de contact glisse sur la surface de butée, notamment dans le cas d'une force d'extraction du couvercle au boîtier. Selon un exemple de ce mode de réalisation, un angle, ayant une valeur comprise entre S et 7°, est formé entre la surface de contact et la surface de butée. This makes it possible to prevent the contact surface from slipping on the abutment surface, in particular in the event of a force to extract the cover from the housing. According to an example of this embodiment, an angle, having a value between S and 7 °, is formed between the contact surface and the stop surface.
Cela permet que les organes de maintien soient emboîtés l'un dans l'autre permettant d'empêcher de les déboîter manuellement sans outil ou sans casser un des organes de maintien. Selon un mode de réalisation, l'excroissance est à l'intérieur du boîtier et le logement est ouvert vers l'intérieur du boîtier. Cela permet d'augmenter la difficulté à déboîter les organes de maintien emboîtés l'un avec l'autre. This allows the retaining members to be nested one inside the other making it possible to prevent them from being disengaged manually without tools or without breaking one of the retaining members. According to one embodiment, the protuberance is inside the case and the housing is open towards the inside of the case. This makes it possible to increase the difficulty in disengaging the retaining members nested with one another.
Selon une variante de ce mode de réalisation, l'excroissance est à l'extérieur du boîtier et le logement est ouvert vers l'extérieur du boîtier. Cela permet de pouvoir déboîter les organes de maintien notamment avec l'aide d'un outil spécifique, plus facilement que dans le mode de réalisation précédent. According to a variant of this embodiment, the protuberance is outside the case and the housing is open towards the outside of the case. This makes it possible to be able to disengage the retaining members, in particular with the help of a specific tool, more easily than in the previous embodiment.
Selon un mode de réalisation, le boîtier comprend l'organe de maintien comprenant le logement et le couvercle comprend l'organe de maintien comprenant la patte de support et l'excroissance. Selon une variante, le boîtier comprend l'organe de maintien comprenant la patte de support et l'excroissance l'organe de maintien et le couvercle comprend comprenant le logement. According to one embodiment, the case comprises the retaining member comprising the housing and the cover comprises the retaining member comprising the support tab and the protuberance. According to a variant, the housing comprises the retaining member comprising the support tab and the protuberance, the retaining member and the cover comprises comprising the housing.
Selon un mode de réalisation, l'excroissance comprend un évidement débouchant sur la surface de contact pour améliorer une homogénéité de l'épaisseur de l'excroissance. According to one embodiment, the protuberance comprises a recess opening out on the contact surface to improve homogeneity of the thickness of the protuberance.
Cela permet de diminuer un risque de défaut dans l'excroissance lors de son moulage. L'invention concerne en outre une machine électrique comprenant : This makes it possible to reduce a risk of defect in the protuberance during its molding. The invention further relates to an electric machine comprising:
- un rotor, - a rotor,
- un stator entourant le rotor, - a stator surrounding the rotor,
- un palier pour supporter le rotor, et fixé au stator, - une boîte électronique décrite précédemment avec ou sans les caractéristiques des différents modes de réalisation décrits précédemment, la boîte électronique étant montée sur le palier. - a bearing to support the rotor, and fixed to the stator, an electronic box described above with or without the characteristics of the various embodiments described above, the electronic box being mounted on the bearing.
Brève description des dessins : D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est donnée ci-dessous, à titre indicatif et nullement limitatif, en référence aux figures annexées, parmi lesquelles : Brief description of the drawings: Other characteristics and advantages of the invention will emerge clearly from the description which is given below, by way of indication and in no way limiting, with reference to the appended figures, among which:
[Fig. 1] La figure 1 représente une vue en perspective d'un exemple d'un premier mode de réalisation d'une partie d'une boîte électronique. [Fig. 2] La figure 2 représente une vue en perspective du boîtier 1 de l'exemple représenté sur la figure 1. [Fig. 1] Figure 1 shows a perspective view of an example of a first embodiment of part of an electronic box. [Fig. 2] Figure 2 shows a perspective view of the housing 1 of the example shown in Figure 1.
[Fig. B] La figure 3 représente une vue en perspective d'une portion du couvercle 2 de l'exemple représenté sur la figure 1. [Fig. B] Figure 3 shows a perspective view of a portion of the cover 2 of the example shown in Figure 1.
[Fig. 4] La figure 4 représente une vue en perspective d'une partie du boîtier 1 de la figure 2 montrant un des cinq organes de maintien 110. [Fig. 4] Figure 4 shows a perspective view of part of the housing 1 of Figure 2 showing one of the five retaining members 110.
[Fig. 5] La figure 5 représente une coupe de l'organe de maintien 110 représenté sur la figure 4. [Fig. 5] Figure 5 shows a section of the holder 110 shown in Figure 4.
[Fig. 6] La figure 6 représente une vue en perspective d'une partie du couvercle 2 représenté sur la figure 1 comprenant un organe de maintien 21. [Fig. 7] La figure 7 représente une coupe d'une partie de la boite électronique A de la figure 1 au niveau des organes de maintien mâle et femelle. [Fig. 6] FIG. 6 represents a perspective view of part of the cover 2 shown in FIG. 1 comprising a retaining member 21. [FIG. 7] FIG. 7 represents a section of part of the electronic box A of FIG. 1 at the level of the male and female retaining members.
[Fig. 8] La figure 8 représente une coupe d'une partie du couvercle 2 représenté à la figure 2. [Fig. 8] Figure 8 shows a section of part of the cover 2 shown in Figure 2.
[Fig. 9] La figure 9 représente une partie de la boîte électronique selon l'exemple du premier mode de réalisation. [Fig. 10] La figure 10 représente une coupe de la boite électronique de l'exemple du premier mode de réalisation. [Fig. 9] FIG. 9 represents a part of the electronic box according to the example of the first embodiment. [Fig. 10] FIG. 10 represents a section of the electronic box of the example of the first embodiment.
[Fig. 11] La figure 11 représente une autre coupe de la boite électronique de l'exemple du premier mode de réalisation. Pour plus de clarté, les éléments identiques ou similaires sont repérés par des signes de référence identiques sur l'ensemble des figures. [Fig. 11] FIG. 11 represents another section of the electronic box of the example of the first embodiment. For greater clarity, identical or similar elements are identified by identical reference signs in all of the figures.
Un exemple d'un premier mode de réalisation d'une boîte électronique A va être décrit ci- dessous. An example of a first embodiment of an electronic box A will be described below.
La figure 1 représente une vue en perspective d'un exemple d'un premier mode de réalisation d'une partie d'une boîte électronique A pour machine électrique tournante d'un véhicule automobile. La boîte électronique A comprend un boîtier 1. FIG. 1 represents a perspective view of an example of a first embodiment of a part of an electronic box A for a rotary electrical machine of a motor vehicle. Electronic box A includes box 1.
La figure 2 représente une vue en perspective du boîtier 1 de l'exemple représenté sur la figure 1. Figure 2 shows a perspective view of the housing 1 of the example shown in Figure 1.
Le boîtier 1 comprend une ouverture 10 et une paroi périphérique 11 autour de l'ouverture 10. La paroi périphérique 11 comprend un organe de maintien 110. La paroi périphérique 11 comprend dans cet exemple cinq organes de maintien 110 mais peut en comporter plus ou moins. The housing 1 comprises an opening 10 and a peripheral wall 11 around the opening 10. The peripheral wall 11 comprises a retaining member 110. The peripheral wall 11 comprises in this example five retaining members 110 but may comprise more or less. .
La boîte électronique A comprend en outre un couvercle 2 fixé au boîtier 1. The electronic box A further comprises a cover 2 fixed to the box 1.
La figure 3 représente une vue en perspective d'une portion du couvercle 2 de l'exemple représenté sur la figure 1. Le couvercle 2 comprend une paroi de recouvrement 20 pour fermer l'ouverture 10 du boîtier 1. Figure 3 shows a perspective view of a portion of the cover 2 of the example shown in Figure 1. The cover 2 comprises a cover wall 20 to close the opening 10 of the housing 1.
Le couvercle 2 peut comprendre une connectique surmoulée par la matière de la paroi de recouvrement 20. En l'occurrence le couvercle 2 comprend une cheminé 26 pour l'insertion d'une fiche électrique d'un connecteur électrique du véhicule automobile reliée électriquement à la connectique du couvercle 2. La boîte électronique A peut comprendre un connecteur 7 comprenant une fiche boîtier connectée à une fiche couvercle reliée électriquement à la connectique du couvercle 2. La figure 11 représente une coupe de la boîte électronique A comprenant le connecteur 7. Dans cet exemple, le connecteur 7 est décalé par rapport à la connectique du couvercle 2 dans la cheminé 26. The cover 2 can comprise a connector molded by the material of the covering wall 20. In this case, the cover 2 comprises a duct 26 for inserting an electrical plug of an electrical connector of the motor vehicle electrically connected to the connectors of the cover 2. The electronic box A can include a connector 7 comprising a box plug connected to a cover plug electrically connected to the connectors of the cover 2. FIG. 11 shows a section of the electronic box A comprising the connector 7. In this example, the connector 7 is offset with respect to the connections of the cover 2 in the chimney 26.
La paroi de recouvrement 20 comprend une portion de support élastique 200. Dans ce premier mode de réalisation, la paroi de recouvrement 20 comprend au moins autant de portion de support élastique 200 que nombre d'organes de maintien 110 de la paroi périphérique 11, en l'occurrence la paroi de recouvrement 20 comporte cinq portions de support élastique 200. Dans cet exemple les organes de maintien du couvercle 21 et du boîtier 110 sont répartis autour de l'ouverture du boîtier 1. The covering wall 20 comprises an elastic support portion 200. In this first embodiment, the covering wall 20 comprises at least as many elastic support portions 200 as the number of retaining members 110 of the peripheral wall 11, in in this case, the covering wall 20 comprises five portions of elastic support 200. In this example, the retaining members of the cover 21 and of the housing 110 are distributed around the opening of the housing 1.
Le couvercle 2 comprend en outre un organe de maintien 21 s'étendant de la portion de support élastique 200. L'organe de maintien 21 du couvercle 2 a une forme complémentaire avec l'organe de maintien 110 du boîtier 1. L'organe de maintien 21 du couvercle 2 est emboîté avec l'organe de maintien 110 du boîtier 1 pour retenir le couvercle 2 dans un sens opposé à un sens de fermeture de l'ouverture 10 par le couvercle 2 contre le boîtier 1. The cover 2 further comprises a retaining member 21 extending from the elastic support portion 200. The retaining member 21 of the cover 2 has a shape complementary to the retaining member 110 of the housing 1. The retaining member maintaining 21 of the cover 2 is fitted with the retaining member 110 of the housing 1 to retain the cover 2 in a direction opposite to a direction of closing of the opening 10 by the cover 2 against the housing 1.
La paroi de recouvrement 20 et l'organe de maintien 21 du couvercle 2 peuvent être issue d'un moulage en PBT qui est l'acronyme de polytéréphtalate de butylène qui est un polymère semi-cristallin thermoplastique faisant partie de la famille des polyesters. La paroi périphérique du boîtier 1 peut être moulée aussi en PBT. The covering wall 20 and the retaining member 21 of the cover 2 can be obtained from a molding of PBT which is the acronym for polybutylene terephthalate which is a thermoplastic semi-crystalline polymer belonging to the family of polyesters. The peripheral wall of the housing 1 can also be molded in PBT.
Dans cet exemple, la matière PBT de la paroi de recouvrement 20, de l'organe de maintien 21 et de la paroi périphérique du boîtier 1, est chargée, en particulier la matière est en PBT GF 30 ayant un module élastique en traction d'environ 3,4 GPa et un module de compression d'environ 2,8 GPa. Cette matière augmente la rigidité de la paroi périphérique 11, de l'organe de maintien 110 du boîtier 1, de la paroi de recouvrement 20 et de l'organe de maintien 21 du couvercle 2. In this example, the PBT material of the cover wall 20, of the retaining member 21 and of the peripheral wall of the housing 1, is loaded, in particular the material is of PBT GF 30 having an elastic modulus in tension of about 3.4 GPa and a compression modulus of about 2.8 GPa. This material increases the rigidity of the peripheral wall 11, of the retaining member 110 of the housing 1, of the covering wall 20 and of the retaining member 21 of the cover 2.
Un des deux organes de maintien 110 forme un premier type d'organe de maintien appelé organe de maintien femelle et l'autre organe de maintien 21 forme un deuxième type d'organe de maintien appelé mâle. L'organe de maintien 110 femelle comprend un logement 111 et l'organe maintien mâle 21 comprend une patte de support 210 et une excroissance 211 s'étendant de la patte de support 210. One of the two retaining members 110 forms a first type of retaining member called female retaining member and the other retaining member 21 forms a second type of retaining member called male. The female retaining member 110 comprises a housing 111 and the male retaining member 21 comprises a support tab 210 and a protuberance 211 extending from the support tab 210.
Dans cet exemple de ce premier mode de réalisation, les organes de maintien 110 du boîtier sont de type femelle et les organes de maintien 21 du couvercle 2 sont de type mâle. Selon un deuxième mode de réalisation non représenté, les organes de maintien du couvercle sont de type femelle et les organes de maintien du boîtier sont de type mâle. Les différentes caractéristiques décrites dans la suite concernant les organes de maintien s'appliquent aussi à ce mode de réalisation non représenté. Selon un autre exemple non représenté de ce premier mode de réalisation, au moins un des organes de maintien du boîtier 1 est de type mâle emboîté avec l'organe de maintien du couvercle 2 qui est de type femelle. In this example of this first embodiment, the retaining members 110 of the housing are of the female type and the retaining members 21 of the cover 2 are of the male type. According to a second embodiment not shown, the cover retaining members are of the female type and the housing retaining members are of the male type. The various characteristics described below concerning the holding members also apply to this embodiment, not shown. According to another not shown example of this first embodiment, at least one of the housing 1 retaining members is of the male type fitted with the cover retaining member 2 which is of the female type.
Le logement 111 de l'exemple de ce mode de réalisation est plus particulièrement visible sur une figure 4. The housing 111 of the example of this embodiment is more particularly visible in FIG. 4.
La figure 4 est une vue en perspective d'une partie du boîtier 1 de la figure 2 montrant un des cinq organes de maintien 110. Figure 4 is a perspective view of part of the housing 1 of Figure 2 showing one of the five retainers 110.
Dans cet exemple de ce mode de réalisation, le logement 111 est ouvert vers l'intérieur du boîtier 1 et l'organe de maintien 21 du couvercle 2 est à l'intérieur du boîtier 1. In this example of this embodiment, the housing 111 is open towards the interior of the housing 1 and the retaining member 21 of the cover 2 is inside the housing 1.
Le logement 111 comprend une surface de butée 112. Dans cet exemple de ce premier mode de réalisation la surface de butée 112 est plus particulièrement visible sur la figure 5. La figure 5 représente une coupe de l'organe de maintien 110 représenté sur la figure 4. The housing 111 comprises a stop surface 112. In this example of this first embodiment, the stop surface 112 is more particularly visible in FIG. 5. FIG. 5 represents a section of the retaining member 110 shown in FIG. 4.
Dans ce premier mode de réalisation, l'organe de maintien 21 comprenant une patte de support 210 et une excroissance 211 est donc un organe de maintien 21 du couvercle 2. In this first embodiment, the retaining member 21 comprising a support tab 210 and a protuberance 211 is therefore a retaining member 21 of the cover 2.
L'excroissance 211 comprend au moins une partie dans le logement 111. The protuberance 211 includes at least a part in the housing 111.
La figure 7 représente une coupe d'une partie de la boite électronique A de la figure 1 au niveau des organes de maintien mâle et femelle. On peut voir, sur cette figure 7, une partie de l'excroissance 211 dans le logement 111. FIG. 7 represents a section of part of the electronic box A of FIG. 1 at the level of the male and female retaining members. One can see, in this figure 7, part of the protuberance 211 in the housing 111.
L'excroissance 211 comprend une surface de contact 2112, la surface de contact 2112 étant en contact avec la surface de butée 112 permettant de retenir le couvercle 2 dans le sens opposé à un sens d'insertion de l'excroissance 211 dans le logement 111 correspondant au sens de fermeture du boîtier 1 par le couvercle 2. En l'occurrence dans cet exemple, la surface de contact 2112 est inclinée par rapport à la surface de butée 112 selon un angle de 4°. Autrement dit la surface de contact 2112 a une extrémité en appui contre une portion de la surface de butée 112. En outre dans cet exemple, l'excroissance 211 comprend un évidement 2113 débouchant sur la surface de contact 2112. Cet évidement permet de former une épaisseur homogène de l'excroissance 211. L'excroissance 211 comporte une surface rampe 2113 inclinée par rapport à une direction d'insertion pour déformer progressivement élastiquement la portion de support élastique 200 lors de la fermeture du boîtier 1 par le couvercle 2 dans le sens d'insertion. The protuberance 211 comprises a contact surface 2112, the contact surface 2112 being in contact with the stop surface 112 making it possible to retain the cover 2 in the direction opposite to a direction of insertion of the protuberance 211 in the housing 111 corresponding to the direction of closure of the housing 1 by the cover 2. In this case, in this example, the contact surface 2112 is inclined with respect to the stop surface 112 at an angle of 4 °. In other words, the contact surface 2112 has one end resting against a portion of the abutment surface 112. In addition, in this example, the protuberance 211 comprises a recess 2113 opening onto the contact surface 2112. This recess makes it possible to form a homogeneous thickness of the protuberance 211. The protuberance 211 comprises a ramp surface 2113 inclined with respect to an insertion direction in order to progressively elastically deform the elastic support portion 200 when the housing 1 is closed by the cover 2 in the insertion direction.
La figure 6 représente une vue en perspective d'une partie du couvercle 2 représenté sur la figure 1 comprenant un organe de maintien 21. FIG. 6 represents a perspective view of part of the cover 2 shown in FIG. 1 comprising a retaining member 21.
L'excroissance 211 peut comprendre une deuxième surface 2114 en butée contre une surface périphérique 114 du logement 111. Dans cet exemple de ce mode de réalisation, chaque excroissance 211 de l'organe de maintien 21 est en butée contre la surface de butée 212 et la surface périphérique 114 du logement 111. The protuberance 211 may include a second surface 2114 in abutment against a peripheral surface 114 of the housing 111. In this example of this embodiment, each protuberance 211 of the retaining member 21 is in abutment against the abutment surface 212 and the peripheral surface 114 of the housing 111.
La patte de support 210 peut être élastique et être déformée élastiquement pour exercer une force de l'excroissance 211 sur la surface périphérique 114 du logement 111 dans une direction sensiblement perpendiculaire à la direction d'insertion. En l'occurrence dans cet exemple, la patte de support 210 est élastique et la surface rampe 2113 déforme la patte de support 211 dans une direction sensiblement perpendiculaire à la direction d'insertion lors de l'insertion de l'organe de maintien 212 contre la paroi périphérique 11. Notamment dans cet exemple, la paroi périphérique 11 comprend une surface rampe 113 pour déformer progressivement, avec la surface rampe 2113, la patte de support 210 dans une direction sensiblement perpendiculaire à la direction d'insertion lors de l'insertion de l'organe de maintien 212. L'effort de la paroi périphérique 11, lors de l'insertion, sur la patte de support 210 va en outre déformer la portion de support élastique 200. The support tab 210 may be resilient and be elastically deformed to exert a force of the protuberance 211 on the peripheral surface 114 of the housing 111 in a direction substantially perpendicular to the direction of insertion. In this case in this example, the support tab 210 is elastic and the ramp surface 2113 deforms the support tab 211 in a direction substantially perpendicular to the direction of insertion during the insertion of the holding member 212 against. the peripheral wall 11. In particular in this example, the peripheral wall 11 comprises a ramp surface 113 for progressively deforming, with the ramp surface 2113, the support tab 210 in a direction substantially perpendicular to the direction of insertion during insertion. of the retaining member 212. The force of the peripheral wall 11, during insertion, on the support tab 210 will further deform the elastic support portion 200.
Le logement 111 peut être formé dans l'épaisseur de la paroi périphérique 11. En l'occurrence, dans cet exemple, l'organe de maintien 110 forme sur la surface périphérique externe de la paroi périphérique, des saillies externes pour former la surface périphérique 114 du logement 111. The housing 111 can be formed in the thickness of the peripheral wall 11. In this case, in this example, the retaining member 110 forms on the external peripheral surface of the peripheral wall, external projections to form the peripheral surface. 114 of housing 111.
La paroi périphérique 11 peut comprendre un bord 1102 perpendiculaire au sens d'insertion du couvercle 2 pour fermer le boîtier 1 pour permettre au couvercle 2 de se plaquer contre le bord 1102 de la paroi périphérique 11 du boîtier 1. Dans cet exemple, l'organe de maintien 110 comprend une portion saillie 115 formant une saillie vers l'extérieure par rapport au bord 1102. Cette portion 115 permet de former dans l'épaisseur de la paroi périphérique 11, la surface rampe 113 de l'organe de maintien mais aussi d'avoir une patte de support 210 pas trop longue. En l'occurrence, dans cet exemple, le couvercle 2 comprend une encoche 25 dans la portion de support plastique 200, épousant la forme de la portion saillie 115. Cela permet de diminuer encore la taille des pattes de support notamment pour permettre de loger des composants électroniques ou des traces électriques dessous l'organe de maintien 21. The peripheral wall 11 may include an edge 1102 perpendicular to the direction of insertion of the cover 2 to close the housing 1 to allow the cover 2 to press against the edge 1102 of the peripheral wall 11 of the housing 1. In this example, the retaining member 110 comprises a projection portion 115 forming a projection outwardly relative to the edge 1102. This portion 115 makes it possible to form in the thickness of the peripheral wall 11, the ramp surface 113 of the retaining member but also to have a 210-step support leg too long. In this case, in this example, the cover 2 comprises a notch 25 in the plastic support portion 200, matching the shape of the protruding portion 115. This makes it possible to further reduce the size of the support legs, in particular to allow housing of electronic components or electrical traces under the retainer 21.
La patte de support 210 peut comprendre deux bras latéraux 2100 élastiques et l'excroissance est située entre les deux bras latéraux élastique 2100. En l'occurrence, dans ce mode de réalisation, les deux bras latéraux 2100 élastiques s'étendent chacun de la portion de support élastique 200. The support leg 210 may include two elastic side arms 2100 and the protuberance is located between the two elastic side arms 2100. In this case, in this embodiment, the two elastic side arms 2100 each extend from the portion. elastic support 200.
La patte de support 210 peut comprendre un troisième bras central élastique 2101 et deux poutres élastiques 2102 reliant chaque bras latéral 2100 au bras central 2101 et dans laquelle l'excroissance 211 s'étend à partir du bras central 2101 vers le logement 111. The support leg 210 may include a third elastic central arm 2101 and two elastic beams 2102 connecting each side arm 2100 to the central arm 2101 and in which the protuberance 211 extends from the central arm 2101 towards the housing 111.
En l'occurrence dans cet exemple de ce mode de réalisation, la patte de support 210 comprend deux poutres élastiques 2102 qui ont une forme courbée comprenant chacun de chaque côté un congé pour être relié au bras central 2101 et au bras latéral 2100 à partir duquel il s'étend. In this example of this embodiment, the support leg 210 comprises two elastic beams 2102 which have a curved shape each comprising on each side a fillet to be connected to the central arm 2101 and to the lateral arm 2100 from which he's stretching.
La patte de support 210 peut être élastique et être déformée élastiquement pour exercer une force de la surface de contact 2112 contre la surface de butée 1112 du logement . The support tab 210 may be resilient and be elastically deformed to exert a force of the contact surface 2112 against the abutment surface 1112 of the housing.
Dans cet exemple de ce mode de réalisation, les poutres 2102 sont déformées élastiquement pour exercer une force de l'excroissance 211 à la fois par la deuxième surface 2114 en butée contre la surface périphérique 114 du logement dans une direction sensiblement perpendiculaire à la direction d'insertion et par sa première surface de contact 2112 contre la surface de butée 112 du logement 111 dans une direction d'insertion. In this example of this embodiment, the beams 2102 are elastically deformed to exert a force of the protuberance 211 both by the second surface 2114 in abutment against the peripheral surface 114 of the housing in a direction substantially perpendicular to the direction of insertion and by its first contact surface 2112 against the abutment surface 112 of the housing 111 in an insertion direction.
La paroi de recouvrement 20 peut comprendre une portion centrale rigide 201 plus épaisse que la portion de support élastique 200 et moins élastique que la portion de support élastique. The covering wall 20 may include a rigid central portion 201 thicker than the elastic support portion 200 and less elastic than the elastic support portion.
La figure 8 représente une coupe d'une partie du couvercle 2 représenté à la figure 2 dans lequel la portion de recouvrement 20 comprend une portion centrale rigide 201 comprenant des nervures de renfort 2010. Les nervures de renfort 2010 forment une épaisseur sur la portion centrale rigide 201 plus importante que la portion de support élastique 200. FIG. 8 represents a section of part of the cover 2 shown in FIG. 2 in which the covering portion 20 comprises a rigid central portion 201 comprising reinforcing ribs 2010. The reinforcing ribs 2010 form a thickness on the central portion rigid 201 larger than the elastic support portion 200.
Les nervures 2010 on en l'occurrence une forme de nid d'abeilles particulièrement visible sur la figure 1. Le couvercle 2 peut comprendre une paroi de renfort 22 s'étendant de la paroi de recouvrement 20 dans une direction d'insertion formant une frontière entre la portion centrale rigide 201 et la portion de support élastique 200. The ribs 2010 have in this case a shape of honeycomb particularly visible in Figure 1. The cover 2 may include a reinforcing wall 22 extending from the cover wall 20 in an insertion direction forming a border between the rigid central portion 201 and the elastic support portion 200.
En l'occurrence, dans cet exemple le couvercle 2 comprend une paroi de renfort qui s'étend dans le boîtier 1 dans une direction d'insertion formant une frontière entre la portion centrale rigide 201 et la portion de support élastique 200 comprenant des portions qui longent la paroi périphérique 11. In this case, in this example the cover 2 comprises a reinforcing wall which extends into the housing 1 in an insertion direction forming a border between the rigid central portion 201 and the elastic support portion 200 comprising portions which along the peripheral wall 11.
Dans cet exemple, la paroi de renfort 22 forme une périphérie entourée par la paroi périphérique 11 du boîtier 1. La figure 9 représente une partie de la boîte électronique A. In this example, the reinforcing wall 22 forms a periphery surrounded by the peripheral wall 11 of the box 1. FIG. 9 represents part of the electronic box A.
La paroi de recouvrement 20 peut comprendre une portion de plaquage 202 plaquée contre le bord 1102 de la paroi périphérique 11 du boîtier 1. En l'occurrence dans cet exemple, la paroi de recouvrement 20 comprend un décrochement 2002 entre la portion de support plastique 200 et la portion de plaquage 202 de telle manière qu'il y a un jeu dl entre la portion de support élastique 200 recouvrant le bord 1102 et le bord 1102 de la paroi périphérique 11. The covering wall 20 may include a plating portion 202 pressed against the edge 1102 of the peripheral wall 11 of the housing 1. In this example, the covering wall 20 comprises a recess 2002 between the plastic support portion 200 and the plating portion 202 such that there is a clearance d1 between the elastic support portion 200 covering the edge 1102 and the edge 1102 of the peripheral wall 11.
Ce jeu dl permet notamment à la portion de support élastique 200 de se déformer pour plaquer la surface de contact 2112 contre la surface de butée 112. This clearance dl allows in particular the elastic support portion 200 to deform in order to press the contact surface 2112 against the stop surface 112.
La boîte électronique A peut comprendre en outre un support métallique 4 contre lequel est monté le boîtier 1. La figure 10 et la figure 11 représentent chacune une coupe de la boite électronique A de l'exemple du premier mode de réalisation comprenant le support 4. The electronic box A can further comprise a metal support 4 against which the box 1 is mounted. FIG. 10 and FIG. 11 each show a section of the electronic box A of the example of the first embodiment comprising the support 4.
La paroi de recouvrement 20 peut comprendre une ouverture 23 et la boîte électronique peut comprendre une vis de fixation 3 traversant l'ouverture 23 du couvercle 2, vissée pour plaquer le couvercle 2 contre le boîtier 1. En l'occurrence dans ce mode de réalisation, la paroi de recouvrement comprend trois ouvertures 23 traversant la portion centrale rigide 20 et deux encoches 235 situées dans la portion de plaquage 202. The covering wall 20 may comprise an opening 23 and the electronic box may comprise a fixing screw 3 passing through the opening 23 of the cover 2, screwed to press the cover 2 against the housing 1. In this case in this embodiment , the covering wall comprises three openings 23 passing through the rigid central portion 20 and two notches 235 located in the plating portion 202.
Dans cet exemple, une des trois ouvertures est une ouverture centrale permettant la fixation du couvercle 2 au support 4. Cette ouverture centrale est située entre le centre du couvercle 2 et la cheminé 26. La boîte électronique A comprend en outre une vis de fixation couvercle- support indirecte 3 traversant cette ouverture, visible sur la figure 1 et une vis-colonnette 53 vissée au support 4. La figure 11 représente une coupe de la boîte électronique dans la vis de fixation couvercle-support indirecte 3. La vis de fixation couvercle-support indirecte 3 comprend une tête en appui sur une bordure entourant l'ouverture centrale du couvercle 2. Le boîtier 1 comprend un puit de passage 13 central visible sur la figure 2, traversé par la vis de fixation couvercle-support indirecte vissée dans la vis-colonnette 53. In this example, one of the three openings is a central opening allowing the fixing of the cover 2 to the support 4. This central opening is located between the center of the cover. 2 and the chimney 26. The electronic box A further comprises a cover-indirect support fixing screw 3 passing through this opening, visible in FIG. 1 and a column screw 53 screwed to the support 4. FIG. 11 represents a section of the electronic box in the cover-indirect support fixing screw 3. The indirect cover-support fixing screw 3 comprises a head resting on a border surrounding the central opening of the cover 2. The housing 1 comprises a visible central passage well 13 in figure 2, crossed by the cover-indirect support fixing screw screwed into the screw-pillar 53.
Cela permet de diminuer les vibrations du couvercle 2 notamment au niveau de la cheminé 26 pour recevoir une fiche électrique. This makes it possible to reduce the vibrations of the cover 2, in particular at the level of the chimney 26 for receiving an electrical plug.
Dans cet exemple en outre, la boite électronique A comprend une vis de fixation couvercle- boîtier 31 traversant une des trois ouvertures 23 pour fixer le couvercle 2 au boîtier 1. La coupe représentée sur la figure 11 passe aussi par la vis de fixation couvercle-boîtier 31. Le boîtier 1 comprend un puit taraudé 131 comprenant par exemple insert taraudé, situé sur la paroi périphérique 11 du boîtier 1. La vis de fixation couvercle-boîtier 31 est vissée dans ce puit taraudé 131. Cette vis de fixation 31 est adjacente au connecteur 7 représenté sur la figure 11. Cela permet d'améliorer le contact entre la fiche couvercle et la fiche boîtier connecteur 7 pour diminuer les pertes de connexion électrique entres ses fiches par des vibration de la boîte électronique A. In this example, moreover, the electronic box A comprises a cover-housing fixing screw 31 passing through one of the three openings 23 for fixing the cover 2 to the housing 1. The cut shown in FIG. 11 also passes through the cover-fixing screw. housing 31. Housing 1 comprises a threaded well 131 comprising, for example, a threaded insert, located on the peripheral wall 11 of the housing 1. The cover-housing fixing screw 31 is screwed into this threaded well 131. This fixing screw 31 is adjacent to the connector 7 shown in FIG. 11. This improves the contact between the cover plug and the connector housing plug 7 to reduce the loss of electrical connection between its plugs by vibrations of the electronic box A.
La boîte électronique A comprend en outre une vis de fixation boîtier-support directe 34 visible sur la figure 1 et le boîtier 1 comprend en outre un puit 134 visible sur les figures 1 et 2 en saillie vers l'extérieure de la paroi périphérique 11. La vis de fixation boîtier-support directe 34 traverse le puit 134 et est vissée dans un trou taraudé du support 4. The electronic box A further comprises a direct housing-support fixing screw 34 visible in FIG. 1 and the housing 1 further comprises a well 134 visible in FIGS. 1 and 2 projecting outwardly from the peripheral wall 11. The direct box-support fixing screw 34 passes through the well 134 and is screwed into a tapped hole in the support 4.
La boîte électronique A comprend en outre trois vis de fixation boîtier-support indirecte 35 et trois vis-colonnettes 5 vissées au support 4 et comprenant un taraudage. The electronic box A further comprises three indirect box-support fixing screws 35 and three column screws 5 screwed to the support 4 and comprising an internal thread.
Deux des trois vis de fixation boîtier-support indirecte 35 ont chacune une tête située dans une des deux encoches 235 du couvercle 2. Le boîtier 1 comprend en outre sur sa paroi périphérique 11, deux puits d'appui 135 visibles sur la figure 2 et la figure 10. La figure 10 représente une coupe passant par ces deux vis de fixation boîtier-support indirecte 35. Chacune de ces deux vis de fixation boîtier-support indirecte 35 comprend une tête en appui sur une extrémité du puit d'appui 135 correspondant et traverse le puit d'appui 135 correspondant. Chacune des deux vis de fixation boîtier-support indirecte 35 étant vissée au taraudage de la vis-colonnette 5 correspondante. Les deux vis colonnettes 5 sont chacune en appui sur l'autre extrémité du puit d'appui 135 correspondant. Two of the three indirect housing-support fixing screws 35 each have a head located in one of the two notches 235 of the cover 2. The housing 1 further comprises on its peripheral wall 11, two support wells 135 visible in FIG. 2 and FIG. 10. FIG. 10 shows a section passing through these two indirect housing-support fixing screws 35. Each of these two indirect housing-support fixing screws 35 comprises a head resting on one end of the corresponding bearing well 135. and crosses the support well 135 corresponding. Each of the two indirect housing-support fixing screws 35 being screwed to the tapping of the corresponding column screw 5. The two column screws 5 are each resting on the other end of the corresponding bearing well 135.
La troisième vis de fixation boîtier-support indirecte 35 traverse la troisième ouverture 23 du boîtier 21 et comprend une tête en appui sur un troisième puit 135 visible sur la figure 2 s'étendant dans le logement à partir d'un fond du boîtier 2. La troisième vis-colonnette comprend un trou taraudé vissé à la troisième vis de fixation boîtier-support indirecte 35 et un filetage vissé dans un trou du support 4. The third indirect housing-support fixing screw 35 passes through the third opening 23 of the housing 21 and comprises a head resting on a third well 135 visible in FIG. 2 extending into the housing from a bottom of the housing 2. The third column screw comprises a tapped hole screwed to the third indirect housing-support fixing screw 35 and a thread screwed into a hole in the support 4.
Le support 4 comprend donc des trous taraudés pour recevoir chacun une des vis-colonnette 5. The support 4 therefore comprises threaded holes to each receive one of the column screws 5.
Dans ce mode de réalisation, le support 4 est un dissipateur thermique métallique comprenant des ailettes de refroidissement 41 et une base 42 comprenant chaque trou taraudé dans laquelle les vis-colonnettes 5 sont vissées. Le support est dans cet exemple dans un alliage aluminium. La boîte électronique A peut comprendre une carte de connexion montée dans le boîtier ou formant le fond du boîtier et des composants électroniques montés sur la carte électronique. In this embodiment, the support 4 is a metallic heat sink comprising cooling fins 41 and a base 42 comprising each threaded hole in which the column screws 5 are screwed. The support is in this example in an aluminum alloy. The electronic box A can include a connection card mounted in the box or forming the bottom of the box and electronic components mounted on the electronic card.
La boite électronique A peut aussi comporter un gel ou pâte de protection entre les composants électroniques et le couvercle pour les protéger. The electronic box A can also include a protective gel or paste between the electronic components and the cover to protect them.
La boite électronique A peut comprendre aussi un module électronique monté entre le fond du boîtier et le support. Le module électronique comprend des composants électroniques protégés par des parois du module. The electronic box A can also include an electronic module mounted between the bottom of the box and the support. The electronic module comprises electronic components protected by walls of the module.
En l'occurrence dans ce mode de réalisation, la boite électronique A comprend des modules électroniques de puissance 6 montés entre le fond du boîtier 1 et le support 4. Par module de puissance on entend les modules électroniques comprenant des composants électroniques pour commander l'alimentation des phases d'un stator d'une machine électrique tournante ou encore l'alimentation d'une bobine d'un rotor de la machine électrique tournante. En particulier, dans cet exemple, chaque module électronique de puissance 6 est en outre fixé au support 4 par une des vis-colonnettes 5. En l'occurrence, une autre vis de module de puissance 6 non représentée permet de fixer le module 6 au support 4. Naturellement, l'invention n'est pas limitée aux modes de réalisation décrits en référence aux figures et des variantes pourraient être envisagées sans sortir du cadre de l'invention. In this case in this embodiment, the electronic box A comprises electronic power modules 6 mounted between the bottom of the box 1 and the support 4. The term “power module” is understood to mean the electronic modules comprising electronic components for controlling the power. supplying the phases of a stator of a rotating electrical machine or even supplying a coil of a rotor of the rotating electrical machine. In particular, in this example, each electronic power module 6 is also fixed to the support 4 by one of the column screws 5. In this case, another power module screw 6, not shown, allows the module 6 to be fixed to the. support 4. Naturally, the invention is not limited to the embodiments described with reference to the figures and variants could be envisaged without departing from the scope of the invention.

Claims

Revendications Claims
1. Boîte électronique (A) pour machine électrique tournante d'un véhicule automobile, comprenant : 1. Electronic box (A) for a rotating electrical machine of a motor vehicle, comprising:
a. un boîtier (1), le boîtier (1) comprenant une ouverture (10) et une paroi périphérique (11) autour de l'ouverture (10), la paroi périphérique (11) comprenant un organe de maintien (110), at. a housing (1), the housing (1) comprising an opening (10) and a peripheral wall (11) around the opening (10), the peripheral wall (11) comprising a holding member (110),
b. un couvercle (2) fixé au boîtier (1), le couvercle (2) comprenant : b. a cover (2) fixed to the housing (1), the cover (2) comprising:
i. une paroi de recouvrement (20) pour fermer l'ouverture du boîtier (1), la paroi de recouvrement (20) comprenant une portion de support élastique (200), i. a cover wall (20) for closing the opening of the housing (1), the cover wall (20) comprising an elastic support portion (200),
ii. un organe de maintien (21) s'étendant de la portion de support élastique (200), l'organe de maintien (21) ayant une forme complémentaire avec l'organe de maintien (110) du boîtier (1) et en ce que l'organe de maintien (21) du couvercle (2) est emboîté avec l'organe de maintien (110) du boîtier (1) pour retenir le couvercle (2) dans un sens opposé à un sens de fermeture du couvercle (2) contre le boîtier (1) et ii. a retaining member (21) extending from the elastic support portion (200), the retaining member (21) having a shape complementary to the retaining member (110) of the housing (1) and in that the retaining member (21) of the cover (2) is fitted with the retaining member (110) of the housing (1) to retain the cover (2) in a direction opposite to a closing direction of the cover (2) against the housing (1) and
dans laquelle, un des deux organes de maintien (110) comprend un logement (111) comprenant une surface de butée (112) et l'autre organe de maintien (21) comprend : a. une patte de support (210), in which, one of the two retaining members (110) comprises a housing (111) comprising a stop surface (112) and the other retaining member (21) comprises: a. a support bracket (210),
b. une excroissance (211) s'étendant de la patte de support (210), l'excroissance (211) comprenant au moins une partie dans le logement (111) et comprenant : iii. une surface de contact (212), la surface de contact (212) étant en contact avec la surface de butée (112) permettant de retenir le couvercle (2) dans le sens opposé à un sens d'insertion de l'excroissance dans le logement correspondant au sens de fermeture du boîtier (1) par le couvercle (2), b. a protuberance (211) extending from the support leg (210), the protuberance (211) comprising at least a part in the housing (111) and comprising: iii. a contact surface (212), the contact surface (212) being in contact with the stop surface (112) making it possible to retain the cover (2) in the direction opposite to a direction of insertion of the protuberance in the housing corresponding to the closing direction of the housing (1) by the cover (2),
iv. une surface rampe (2113) inclinée par rapport à une direction d'insertion pour déformer progressivement élastiquement la portion de support élastique (200) lors de la fermeture du boîtier (1) par le couvercle (2) dans le sens d'insertion. iv. a ramp surface (2113) inclined with respect to an insertion direction for gradually elastically deforming the elastic support portion (200) upon closing of the case (1) by the cover (2) in the insertion direction.
2. Boîte électronique (A) selon la revendication 1, dans laquelle l'excroissance (211) comprend une deuxième surface (214) en butée contre une surface périphérique (114) du logement (111). 2. Electronic box (A) according to claim 1, wherein the protuberance (211) comprises a second surface (214) in abutment against a peripheral surface (114) of the housing (111).
3. Boîte électronique (A) selon la revendication 1 ou 2 dans laquelle la patte de support (210) est élastique et est déformée élastiquement pour exercer une force de l'excroissance (211) sur une surface périphérique (114) du logement (111) dans une direction sensiblement perpendiculaire à la direction d'insertion. 3. Electronic box (A) according to claim 1 or 2 wherein the support tab (210) is elastic and is elastically deformed to exert a force of the protuberance (211) on a peripheral surface (114) of the housing (111). ) in a direction substantially perpendicular to the direction of insertion.
4. Boîte électronique (A) selon l'une quelconque des revendications précédentes, dans laquelle la patte de support (210) comprend deux bras latéraux (2100) élastiques et dans laquelle l'excroissance (211) est située entre les deux bras latéraux élastiques (2100). 4. Electronic box (A) according to any one of the preceding claims, in which the support tab (210) comprises two elastic lateral arms (2100) and in which the protuberance (211) is located between the two elastic lateral arms. (2100).
5. Boîte électronique (A) selon la revendication précédente, dans laquelle la patte de support (210) comprend un troisième bras central (2101) élastique et deux poutres élastiques (2102) reliant chaque bras latéral (2100) au bras central (2101) et dans laquelle l'excroissance (211) s'étend à partir du bras central (2101) vers le logement (111). 5. Electronic box (A) according to the preceding claim, wherein the support bracket (210) comprises a third central arm (2101) elastic and two elastic beams (2102) connecting each side arm (2100) to the central arm (2101) and wherein the protuberance (211) extends from the central arm (2101) towards the housing (111).
6. Boîte électronique (A) selon l'une quelconque des revendications précédentes, dans laquelle la patte de support (210) est élastique et est déformée élastiquement pour exercer une force de la surface de contact (2112) contre la surface de butée (112). The electronic box (A) according to any one of the preceding claims, wherein the support tab (210) is resilient and is elastically deformed to exert a force of the contact surface (2112) against the abutment surface (112). ).
7. Boîte électronique (A) selon l'une quelconque des revendications précédentes, dans laquelle la paroi de recouvrement (20) comprend une portion centrale rigide (201) plus épaisse que la portion de support élastique (200) et plus rigide que la portion de support élastique (200). 7. Electronic box (A) according to any one of the preceding claims, wherein the cover wall (20) comprises a rigid central portion (201) thicker than the elastic support portion (200) and more rigid than the portion. elastic support (200).
8. Boîte électronique (A) selon l'une quelconque des revendications précédentes, dans laquelle la paroi de recouvrement (20) comprend une ouverture, la boîte électronique (A) comprenant une vis de fixation (3) traversant l'ouverture du couvercle (2) et étant vissée pour plaquer le couvercle (2) contre le boîtier (1). 8. Electronic box (A) according to any one of the preceding claims, in which the cover wall (20) comprises an opening, the electronic box (A) comprising a fixing screw (3) passing through the opening of the cover ( 2) and being screwed to press the cover (2) against the housing (1).
9. Boîte électronique (A) selon la revendication précédente, comprenant une vis- colonnette (5), notamment une vis colonnette métallique, vissée avec la vis de fixation (3) et dans laquelle la vis-colonnette (5) est en appui contre un fond du boîtier (1), le fond comprenant une ouverture et la vis de fixation (3) traverse l'ouverture du fond et est vissée à la vis-colonnette (5) pour plaquer ainsi le couvercle (2) contre un bord (1102) de la paroi périphérique (11) du boîtier (1).9. Electronic box (A) according to the preceding claim, comprising a screw column (5), in particular a metal column screw, screwed with the fixing screw (3) and in which the column screw (5) bears against a background of housing (1), the bottom comprising an opening and the fixing screw (3) passes through the opening in the bottom and is screwed to the column screw (5) to thus press the cover (2) against an edge (1102) of the peripheral wall (11) of the housing (1).
10. Boîte électronique (A) selon la revendication 8 ou 9, comprenant en outre un support métallique (4) contre lequel est monté le boîtier (1), le support (4) étant vissé à la vis-colonnette (5). 10. Electronic box (A) according to claim 8 or 9, further comprising a metal support (4) against which is mounted the housing (1), the support (4) being screwed to the screw-post (5).
11. Boîte électronique (A) selon la revendication 10, dans laquelle le support (4) est un dissipateur thermique métallique comprenant des ailettes de refroidissement (41) et une base (42) comprenant un trou taraudé dans laquelle la vis-colonnette (5) est vissée. 11. Electronic box (A) according to claim 10, wherein the support (4) is a metal heat sink comprising cooling fins (41) and a base (42) comprising a threaded hole in which the screw-column (5) ) is screwed on.
12. Machine électrique comprenant : 12. Electric machine comprising:
a. un rotor, at. a rotor,
b. un stator entourant le rotor, b. a stator surrounding the rotor,
c. un palier pour supporter le rotor, et fixé au stator, et vs. a bearing to support the rotor, and fixed to the stator, and
d. une boîte électronique (A), selon l'une quelconque des revendications précédentes, montée sur le palier. d. an electronic box (A), according to any one of the preceding claims, mounted on the bearing.
PCT/EP2020/051024 2019-01-17 2020-01-16 Electronics box for rotating electrical machine of a vehicle comprising nested retaining members WO2020148387A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1900414A FR3091962B1 (en) 2019-01-17 2019-01-17 Electronic box for a rotating electrical machine of a vehicle comprising interlocked retaining members.
FR1900414 2019-01-17

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WO2020148387A1 true WO2020148387A1 (en) 2020-07-23

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Citations (5)

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US20030147217A1 (en) * 2002-02-06 2003-08-07 Keihin Corporation Electronic circuit board case and method of producing electronic circuit unit
US20120104887A1 (en) * 2010-10-27 2012-05-03 Mitsubishi Electric Corporation Automotive dynamoelectric machine
KR101369266B1 (en) * 2012-04-25 2014-03-07 주식회사 케이에스상사 SUN loops of the car motor case assembly and assembly method
US20140285987A1 (en) * 2013-03-21 2014-09-25 Hitachi Automotive Systems, Ltd. Electronic control device
WO2019001848A1 (en) * 2017-06-26 2019-01-03 Valeo Equipements Electriques Moteur Mechanical assembly with electrical insulation between a rotating electrical machine and its electronic part

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030147217A1 (en) * 2002-02-06 2003-08-07 Keihin Corporation Electronic circuit board case and method of producing electronic circuit unit
US20120104887A1 (en) * 2010-10-27 2012-05-03 Mitsubishi Electric Corporation Automotive dynamoelectric machine
KR101369266B1 (en) * 2012-04-25 2014-03-07 주식회사 케이에스상사 SUN loops of the car motor case assembly and assembly method
US20140285987A1 (en) * 2013-03-21 2014-09-25 Hitachi Automotive Systems, Ltd. Electronic control device
WO2019001848A1 (en) * 2017-06-26 2019-01-03 Valeo Equipements Electriques Moteur Mechanical assembly with electrical insulation between a rotating electrical machine and its electronic part

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FR3091962A1 (en) 2020-07-24
FR3091962B1 (en) 2021-11-26

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