CN208782583U - Motor and electric actuator - Google Patents
Motor and electric actuator Download PDFInfo
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- CN208782583U CN208782583U CN201821587883.0U CN201821587883U CN208782583U CN 208782583 U CN208782583 U CN 208782583U CN 201821587883 U CN201821587883 U CN 201821587883U CN 208782583 U CN208782583 U CN 208782583U
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- 210000000078 claw Anatomy 0.000 claims abstract description 44
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- 229920005989 resin Polymers 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 40
- 239000011148 porous material Substances 0.000 claims description 14
- 238000009826 distribution Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 18
- 238000001514 detection method Methods 0.000 description 17
- 238000009434 installation Methods 0.000 description 15
- 230000008859 change Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model provides a kind of motor and electric actuator.One mode of the motor of the utility model includes rotor, has the motor drive shaft extended along central axis；Stator is opposite with rotor across gap radially；And motor shell made of resin, accommodate stator.Motor shell includes the peripheral wall portion of tubular, axial side it is open-ended, and around central axis covering central axis；And divider wall parts, the stator accommodated from axial other side covering peripheral wall portion.The groove portion for being recessed to radially inner side and axially extending is provided in the outer peripheral surface of stator.It is provided with protrusion in the inner peripheral surface of the peripheral wall portion of motor shell, it is prominent to radially inner side, and be inserted in groove portion；And claw, from axial side and stator contact.
Description
Technical field
The utility model relates to motor and electric actuators.
Background technique
Driving unit shown in Japanese Unexamined Patent Publication 2015-34754 bulletin has motor shell, stator and as making stator
The inner frame of rotation stop component relative to motor shell rotation stop.
In the case where motor shell is formed from a resin, generally by resin insert-molding fixing motor shell and calmly
Son.But in resin insert-molding, need to separate spatial portion and resin portion, it is necessary to ensure that be installed on the stator of mold
Partial precision.Therefore, manufacture is difficult, and manufacturing cost increases.
Utility model content
In view of the foregoing, the first purpose is to provide a kind of easy to manufacture and can cut down manufacturing cost the utility model
Motor and electric actuator.
One mode of the motor of the utility model includes rotor, has the motor drive shaft extended along central axis；It is fixed
Son is opposite with the rotor across gap radially；And motor shell made of resin, it is described fixed to accommodate
Son, the motor shell include the peripheral wall portion of tubular, axial side it is open-ended, and cover institute along the central axis
It states around central axis；And divider wall parts, the stator accommodated in the peripheral wall portion is covered from the axial other side, described
The outer peripheral surface of stator is provided with the groove portion for being recessed to radially inner side and axially extending, in the peripheral wall portion of the motor shell
Inner peripheral surface be provided with protrusion, it is prominent to radially inner side, and be inserted in the groove portion；And claw, from axial direction
Side and the stator contact.
One mode of the electric actuator of the utility model includes above-mentioned motor；And deceleration mechanism, and it is described
The part of the axial side of motor drive shaft connects.
A mode according to the present utility model, provide a kind of motor easy to manufacture and that manufacturing cost can be cut down and
Electric actuator.
By the detailed description of the preferred embodiments of the present invention below, referring to attached drawing, it can be more clearly understood that this
Above-mentioned and other feature, element, step, the features and advantages of utility model.
Detailed description of the invention
Fig. 1 is the perspective view for showing the motor and electric actuator of present embodiment.
Fig. 2 is the longitudinal section view for showing the motor and electric actuator of present embodiment.
Fig. 3 is the sectional elevation for showing the section III-III of Fig. 2, is the figure of unilateral observation deceleration mechanism in the axial direction.
Fig. 4 is the sectional elevation for the part that amplification shows motor shell and stator.
Fig. 5 is the top view of stator, is the figure for showing the configuration of groove portion and claw.
Fig. 6 is the longitudinal section view of motor shell and stator, be show the configuration of the intercommunicating pore and claw of divider wall parts with
And the figure of the shape of claw.
Fig. 7 is the perspective view for showing stator.
Fig. 8 is the sectional elevation for showing the section VIII-VIII of Fig. 2, and the diagram of stator is omitted.
Specific embodiment
As shown in Figure 1 and Figure 2, the electric actuator 10 of present embodiment has shell 11, motor 20, deceleration mechanism
30, output section 40, rotation detection device 60, the first distribution component 91, the second distribution component 92, first bearing 51, second bearing
54,3rd bearing 55 and fourth bearing 56.Motor 20 has rotor 22, stator 23, motor shell 12, control base board 70, converges
Flow item 80 and rotation detection portion 75.Rotor 22 has the motor drive shaft 21 extended along the first central axis (central axis) J1.That is,
Motor 20 has motor drive shaft 21.Deceleration mechanism 30 is connect with motor drive shaft 21.Output section 40 has to be passed via deceleration mechanism 30
The output shaft 41 of the rotation of motor drive shaft 21.Output shaft 41 is axially extending along the first central axis J1's.Output shaft 41 is matched
It is placed in the axial position different from the axial position of motor drive shaft 21 is configured with.In the example of present embodiment, the first central axis
The axial direction of J1 is up and down direction.
In the present embodiment, the direction parallel with the first central axis J1 is referred to as " axial direction ".By in axial direction from
Motor drive shaft 21 is referred to as axial side towards the direction of output shaft 41, will be referred to as from output shaft 41 towards the direction of motor drive shaft 21
The axial other side.Axial side is along the first central axis J1 from motor 20 towards deceleration mechanism 30 and the side of output section 40
To.The axial other side is along the first central axis J1 from output section 40 and deceleration mechanism 30 towards the direction of motor 20.?
In the example of present embodiment, it is the downside of Fig. 1 and Fig. 2 that axial side, which is downside,.The axial other side be upside, be Fig. 1 and
The upside of Fig. 2.In addition, upside and downside are only intended to the title being illustrated to the relative positional relationship of each section, it is practical
Configuration relation etc. be also possible to the configuration relation etc. other than configuration relation that these titles indicate etc..
Radial direction centered on the first central axis J1 is referred to as " radial direction ".By close first central axis in radial direction
The direction of J1 is referred to as radially inner side, and the direction that will be far from the first central axis J1 is referred to as radial outside.It will be with the first central axis
Circumferential direction centered on J1 is referred to as " circumferential direction ".
Shell 11 has motor shell 12 and deceleration mechanism shell 13.Motor shell 12 and deceleration mechanism shell 13 are by setting
Rouge is made.That is, shell 11 is formed from a resin.As shown in Figure 1, shell 11 has ventilating part 17.Ventilating part 17 has shell 11
Inside and external connection spiracle.As shown in Fig. 2, motor shell 12 has the first opening portion of a side opening in the axial direction
12i.Deceleration mechanism shell 13 has the second opening portion 13j of another side opening in the axial direction.Shell 11 has motor shell 12
With deceleration mechanism shell 13 make respective opening portion in the axial direction with respect in the state of fixed structure.That is, motor shell 12
It has been fixed to each other in the state that the first opening portion 12i and the second opening portion 13j is opposite in the axial direction with deceleration mechanism shell 13
Come.In the state that motor shell 12 and deceleration mechanism shell 13 are fixed to each other, the inside of the first opening portion 12i and the second opening
The inside of portion 13j is interconnected.
Rotor 22, stator 23, control base board 70, busbar 80, rotation detection portion 75, first are accommodated in motor shell 12
Distribution component 91 and 3rd bearing 55.In the present embodiment, it is fabricated separately motor shell 12 and stator 23, as be described hereinafter, is led to
It crosses and assembles and fixing motor shell 12 and stator 23.Motor shell 12 has peripheral wall portion 12a, lid 12g, divider wall parts 12d, axis
Hold maintaining part 12e, connector portion 12c and the first wiring maintaining part 14.
Peripheral wall portion 12a is the tubular centered on the first central axis J1 and axially extended.Peripheral wall portion 12a is in cylinder
Shape.The axial side of peripheral wall portion 12a it is open-ended.The axial other side of peripheral wall portion 12a it is open-ended.Peripheral wall portion 12a's
Axial one side and axial another side are open respectively.That is, peripheral wall portion 12a both-side opening in the axial direction.Peripheral wall portion 12a is along the first center
Axis J1 is covered around the first central axis J1.
Stator 23 is accommodated in peripheral wall portion 12a.The radial outside of peripheral wall portion 12a encirclement stator 23.The inside of peripheral wall portion 12a
The part of axial side and the part of the axial other side are separated by aftermentioned divider wall parts 12d.In the inside of peripheral wall portion 12a
To lean on the part of axial side than divider wall parts 12d be stator receiving portion.In the inside of peripheral wall portion 12a than divider wall parts 12d
Part by the axial other side is control base board receiving portion 12f.In the example of present embodiment, control base board receiving portion 12f's
Internal diameter is bigger than the internal diameter of stator receiving portion.
As shown in Fig. 4~Fig. 6, the inner peripheral surface of peripheral wall portion 12a is provided with protrusion 26 and claw 27.Such as Fig. 4 and Fig. 6
Shown, protrusion 26 is prominent from the inner peripheral surface of peripheral wall portion 12a towards radially inner side.In the present embodiment, protrusion 26 be
The rib axially extended in the inner peripheral surface of peripheral wall portion 12a.In the example of diagram, the circumferential width of protrusion 26 is radially constant.
Protrusion 26 is separated at equal intervals circumferentially from one another in the inner peripheral surface of peripheral wall portion 12a and is provided with multiple.As shown in figure 5, claw
27 separate at equal intervals circumferentially from one another in the inner peripheral surface of peripheral wall portion 12a and are provided with multiple.In the present embodiment, claw 27
Separate 120 degree of intervals circumferentially from one another in the inner peripheral surface of peripheral wall portion 12a and there are three being arranged.About protrusion 26 and claw
27, it separately describes later.
As shown in Figure 1 and Figure 2, lid 12g is plate-like.Lid 12g closes another side opening of axial direction to peripheral wall portion 12a
Opening portion.Lid 12g closes the opening of the axial other side of control base board receiving portion 12f.Lid 12g using screw 16 and with
The mode that can be taken off is installed on peripheral wall portion 12a.
As shown in Fig. 2, divider wall parts 12d is in the annulus plate extended from the inner peripheral surface of peripheral wall portion 12a towards radially inner side.
Divider wall parts 12d covers stator 23 from the axial other side.Divider wall parts 12d is located at rotor 22 and stator 23 and control base board 70
Between.Divider wall parts 12d is configured between axial rotor 22 and stator 23 and control base board 70.
As shown in Fig. 6 and Fig. 8, it is provided in divider wall parts 12d along the intercommunicating pore 12h axially through divider wall parts 12d.
In intercommunicating pore 12h such as across coil line (illustration omitted).Coil 23c (reference figure of the coil line from aftermentioned stator 23
5) it extends through in intercommunicating pore 12h, and is electrically connected with control base board 70.Intercommunicating pore 12h circumferentially phase in divider wall parts 12d
Mutually separates at equal intervals and be provided with multiple.In the present embodiment, intercommunicating pore 12h be spaced from each other 120 degree of intervals in the circumferential and
It is provided with two or three.
As shown in figure 8, from the position that intercommunicating pore 12h and claw 27 are overlapped when being configured at from end on observation.That is, multiple connections
From the position that hole 12h and multiple claws 27 are respectively superposed when being configured at from end on observation.Therefore, claw 27 is also mutual in the circumferential
Interval and be provided with two or three.When claw 27 is configured at from end on observation with the opening consistent week of intercommunicating pore 12h
To part.In addition, in fig. 8, for easy understanding claw 27 relative to intercommunicating pore 12h configuration and the figure of stator 23 is omitted
Show.In the present embodiment, from the position being overlapped when three intercommunicating pore 12h and three claws 27 are configured at from end on observation.Root
According to present embodiment, when forming motor shell 12, mold (not shown) (special-shaped mould) is made to extend to claw in side in the axial direction
At 27 position, thus, it is possible to form claw 27 in peripheral wall portion 12a while divider wall parts 12d forms intercommunicating pore 12h, it is easy
Manufacture.It is different from present embodiment, such as in the case where not utilizing intercommunicating pore 12h to form claw 27, as described below
Manufacturing process is complicated.That is, it needs to gap be preset in the part of the claw 27 of the mold of molding peripheral wall portion 12a, in gap
It is inserted into special special-shaped mould, potting resin and after solidifying after radially extracting special-shaped mould, will form peripheral wall portion 12a
Mold extracted along axial.On the other hand, according to the present embodiment, mold only is extracted along axial, manufacture work can be simplified
Sequence.
As shown in Fig. 2, bearing cage 12e is cylindrical in shape.The edge centered on the first central axis J1 bearing cage 12e
It is axially extending.Bearing cage 12e is set to the radially inner edge portion of divider wall parts 12d.It is solid in the inner peripheral surface of bearing cage 12e
Surely there is 3rd bearing 55.Bearing cage 12e keeps 3rd bearing 55.
As shown in Figure 1, connector portion 12c is prominent from the outer peripheral surface of peripheral wall portion 12a towards radial outside.Connector portion 12c
In the tubular radially extended.Connector portion 12c is open to radial outside.In the example of present embodiment, connector portion 12c is in
Oval tubular.The shape of the opening portion of connector portion 12c is the circumferential lengths oblong longer than axial length.As shown in Fig. 2, even
Device portion 12c is met to be configured at the position being overlapped with divider wall parts 12d radially.Connector portion 12c keeps aftermentioned busbar
80.Connector portion 12c is the part connecting between progress and the electric wiring outside shell 11.It is connected in connector portion 12c
External power supply (illustration omitted).
As shown in FIG. 2 and 3, the first wiring maintaining part 14 is prominent from peripheral wall portion 12a to radial outside.As shown in Fig. 2,
First wiring maintaining part 14 axially extends.First wiring maintaining part 14 side opening in the axial direction.First wiring maintaining part 14
The axial position of the end of the axial other side is identical as the axial position of divider wall parts 12d.The circumferential direction of first wiring maintaining part 14
Position is different from the circumferential position of connector portion 12c.
The external gear 31 and internal gear 33, output section of aftermentioned deceleration mechanism 30 are accommodated in deceleration mechanism shell 13
40, rotation detection device 60, the second distribution component 92, first bearing 51, second bearing 54 and fourth bearing 56.As Fig. 1 with
And shown in Fig. 2, deceleration mechanism shell 13 has bottom wall part 13a, bearing canister portion 13d, installation wall portion 13h, prominent canister portion 13c, cover
Canister portion 13b, the second wiring maintaining part 15 and foot 13m.
As shown in Fig. 2, bottom wall part 13a is in the annulus plate centered on the first central axis J1.Bottom wall part 13a is from axial direction
Side covers external gear 31.The face towards the axial other side of bottom wall part 13a is opposite with external gear 31 in the axial direction.Support canister portion
13d is to face the tubular outstanding of the other side in the axial direction towards the axial other side from bottom wall part 13a.Canister portion 13d is supported in circle
Tubular.Supporting canister portion 13d, the other side extends in the axial direction from the radially inner edge portion of bottom wall part 13a.It is another in the axial direction to support canister portion 13d
Side opening.The end face 13i towards the axial other side for supporting canister portion 13d is the plane vertically extended with the first central axis J1
Shape.End face 13i is circular plane.The axial position of end face 13i is configured at the axial other end than aftermentioned cover canister portion 13b
Axial position lean at the position of axial side.
Installation wall portion 13h is protruded from the other side in the axial direction that faces towards the axial other side of bottom wall part 13a.Wall portion is installed
13h extends from the outer peripheral surface of bearing canister portion 13d towards radial outside.Wall portion 13h is installed from canister portion 13d is supported to aftermentioned second
Extend in wiring maintaining part 15.The radially inner edge portion for installing wall portion 13h is connect with the outer peripheral surface of bearing canister portion 13d.Wall portion is installed
The radially outer edge portion of 13h is configured in the second wiring maintaining part 15.The radial position configuration in the radially outer edge portion of wall portion 13h is installed
It is leaned at the position of radial outside in the radial position of the inner peripheral surface than aftermentioned cover canister portion 13b.Install wall portion 13h towards axial direction
The face of the other side is located at the position for leaning on axial side than the end face 13i for supporting canister portion 13d.Although it is not shown, but installation wall portion
13h on the face towards the axial other side of bottom wall part 13a circumferentially from one another interval and be provided with multiple.In this embodiment party
In the example of formula, two installation wall portion 13h are one group, one group of installation wall portion 13h be separated from each other certain interval and in parallel to each other
Extend.Installation wall portion 13h is such as two ribs extended from bearing canister portion 13d to radial outside.Wall portion 13h is installed in the circumferential
Grip aftermentioned first rotation sensor 62.
Prominent canister portion 13c is in from the radially inner edge portion of bottom wall part 13a side tubular outstanding in the axial direction.In prominent canister portion
Output shaft 41 is configured in 13c.Cover canister portion 13b is in from the radially outer edge portion of bottom wall part 13a other side cylinder outstanding in the axial direction
Shape.Cover canister portion 13b is cylindrical.Cover canister portion 13b another side opening in the axial direction.Cover canister portion 13b is covered along the first central axis J1
Around first central axis J1.The end of the axial other side of cover canister portion 13b, which is contacted, is fixed on axial the one of peripheral wall portion 12a
The end of side.
As shown in FIG. 2 and 3, the second wiring maintaining part 15 is prominent from cover canister portion 13b to radial outside.As shown in Fig. 2,
Second wiring maintaining part 15 is in the box-like of another side opening in the axial direction.The inside of second wiring maintaining part 15 is with cover canister portion 13b's
Inside connection.The axial position of the end of the axial side of second wiring maintaining part 15 is identical as the axial position of bottom wall part 13a.
Second wiring maintaining part 15 is opposite with the first wiring maintaining part 14 in the axial direction.Match with first the inside of second wiring maintaining part 15
The inside of line maintaining part 14 is connected to.
As shown in Figure 1 and Figure 3, foot 13m is prominent from cover canister portion 13b to radial outside.Foot 13m is in cover canister portion 13b
Outer peripheral surface in circumferentially from one another interval and be provided with multiple.In the example of present embodiment, three foot 13m are in circumferential direction
On be spaced from each other unequal interval and configure.Also, three foot 13m are different from cover canister portion 13b length outstanding.It can make
With foot 13m by the object such as being installed on vehicle of electric actuator 10.
As shown in Fig. 2, rotor 22 has motor drive shaft 21, rotor core, rotor magnet and counterweight 24.Motor drive shaft 21
It is that can be rotated around the first central axis J1 by first bearing 51 and the bearing of 3rd bearing 55.First bearing 51 and motor drive shaft 21
Axial side end it is chimeric.3rd bearing 55 is chimeric with the part of the axial other side of motor drive shaft 21.Motor drive shaft 21 with subtract
Fast mechanism 30, which connects into, mutually to be rotated by fourth bearing 56 around the second central axis J2.Fourth bearing 56 is configured at along axis
To first bearing 51 and 3rd bearing 55 between, and it is chimeric with motor drive shaft 21.First bearing 51,3rd bearing 55 and the 4th
Bearing 56 is, for example, ball bearing.The end of the axial other side of motor drive shaft 21 is out of bearing cage 12e towards the axial other side
It is prominent.The other side is prominent in the axial direction than divider wall parts 12d for the end of the axial other side of motor drive shaft 21.
Motor drive shaft 21 has the fixed axle portion 21a of rotor core, eccentric axial portion 21b, counterweight installation axle portion 21c and large-diameter portion
21d.The fixed axle portion 21a of rotor core is axially extended centered on the first central axis J1.In the fixed axle portion of rotor core
The outer peripheral surface of 21a is fixed with rotor core.Being located in the fixed axle portion 21a of rotor core leans on the axial other side than rotor core
Position at part chimeric have 3rd bearing 55.
Eccentric axial portion 21b is located at the position for leaning on axial side axle portion 21a more fixed than rotor core.Eccentric axial portion 21b from
The axial other side is connect with the end of the axial side of motor drive shaft 21.Eccentric axial portion 21b is eccentric relative to the first central axis J1.
Eccentric axial portion 21b is extended centered on the second central axis J2 relative to the first central axis J1 bias.Second central axis
J2 is parallel with the first central axis J1.Eccentric axial portion 21b is axially extended as a result,.Eccentric axial portion 21b is embedded in fourth bearing 56
It is interior.Eccentric axial portion 21b supports the external gear 31 of deceleration mechanism 30 by fourth bearing 56.
Counterweight installation axle portion 21c is configured between the fixed axle portion 21a and eccentric axial portion 21b of axial rotor core.Match
It re-mounts axle portion 21c and is connect from the axial other side with eccentric axial portion 21b.Counterweight, which installs axle portion 21c, to be had than eccentric axial portion 21b's
The big diameter of diameter.Counterweight installation axle portion 21c is configured at the axial other side of fourth bearing 56, and in the axial direction with fourth bearing
56 inner ring is opposite.
Large-diameter portion 21d is configured at the axial other side of counterweight installation axle portion 21c.Large-diameter portion 21d from the axial other side with match
Re-mount axle portion 21c connection.Large-diameter portion 21d is configured at the axial side of the fixed axle portion 21a of rotor core.Large-diameter portion 21d is from axis
It is connect to side with the fixed axle portion 21a of rotor core.Large-diameter portion 21d has the diameter bigger than the diameter of counterweight installation axle portion 21c.
In the example of present embodiment, large-diameter portion 21d is diameter the best part in motor drive shaft 21.
Rotor core is cylindrical in shape, and is fixed on the outer peripheral surface of the fixed axle portion 21a of rotor core.Rotor magnet is fixed on rotor iron
The outer peripheral surface of core.As shown in FIG. 2 and 3, counterweight 24 is installed on counterweight installation axle portion 21c.Counterweight 24 has phase
For the gravity axis of the first central axis J1 bias.The gravity axis of counterweight 24 center of gravity with eccentric axial portion 21b in the circumferential
Axis (the second central axis J2) separates 180 degree interval and configures.As shown in Fig. 2, counterweight 24 and large-diameter portion 21d towards axis
To the face contact of side.
Stator 23 is opposite with rotor 22 across gap radially.Stator 23 has the radial outside for surrounding rotor 22
Cricoid stator core and the multiple coil 23c for being installed on stator core.As shown in Figure 4 and 5, stator core has back yoke
23a and tooth 23b.Back yoke 23a is in ring-type circumferentially.Tooth 23b extends from back yoke 23a to radially inner side, and in the circumferential
It is spaced at intervals and configured with multiple.That is, stator 23 has back yoke 23a and multiple tooth 23b.
As shown in fig. 7, the outer peripheral surface in stator 23 is provided with the groove portion 25 for being recessed to radially inner side and axially extending.?
In the example of present embodiment, the middle section being located between axial both ends in the outer peripheral surface of stator 23 is than axial both ends
Portion is prominent to radial outside.Groove portion 25 is configured at the axial middle section in the outer peripheral surface of stator 23.As shown in figure 4, peripheral wall
The protrusion 26 of portion 12a is inserted in groove portion 25.As shown in figs.5 and 6, the claw 27 of peripheral wall portion 12a is from axial side
It is contacted with stator 23.In the present embodiment, manufacturing motor 20 and when electric actuator 10, without using resin inserts at
Type.It is fabricated separately motor shell 12 and stator 23, in the state of keeping protrusion 26 and groove portion 25 opposite in the axial direction, by stator
23 in the axial direction the other side be inserted in the peripheral wall portion 12a of motor shell 12.At this point, protrusion 26 is inserted in groove portion 25, it is fixed
Son 23 is inserted into the axial specified position of peripheral wall portion 12a, and thus claw 27 is contacted from axial side with stator 23.As a result,
Stator 23 is fixed on motor shell 12.
According to the present embodiment, since protrusion 26 is inserted in groove portion 25, be able to suppress motor shell 12 with
Stator 23 relatively moves in the circumferential.Since claw 27 is contacted with stator 23, stator 23 will not be from motor shell 12 to axis
It falls off to side.Therefore, stator 23 can be fixed on to motor shell 12 made of resin without using insert-molding.Cause
And it is easy to manufacture, cut down manufacturing cost.
In the present embodiment, protrusion 26 is the rib axially extended in the inner peripheral surface of peripheral wall portion 12a.Therefore, it dashes forward
It plays portion 26 to contact in axial wide scope with groove portion 25, rotation stopping function is stablized.As shown in Fig. 4, Fig. 5 and Fig. 7, groove portion 25 exists
It separates at equal intervals and is provided with multiple circumferentially from one another in the outer peripheral surface of stator 23.Inner peripheral surface of the protrusion 26 in peripheral wall portion 12a
In separate at equal intervals and be provided with multiple circumferentially from one another.In the present embodiment, due to being provided with multiple groove portions 25, only
Rotating function is more stable.Also, during fabrication, due to be capable of forming stator 23 and motor shell 12 assembling position alignment simultaneously
It is not limited to the structure at a circumferential position, therefore easy to manufacture.Due to being provided with multiple protrusions 26, rotation stopping function
It is more stable.
The quantity of protrusion 26 is identical as the quantity of groove portion 25 or fewer than the quantity of groove portion 25.That is, the number of protrusion 26
Amount be identical as the quantity of groove portion 25 or its below.In the case where the quantity of protrusion 26 is fewer than the quantity of groove portion 25,
It is preferred that the quantity of protrusion 26 is the approximate number of the quantity of groove portion 25, and configure at equal intervals in the circumferential.
The circumferential width of groove portion 25 becomes larger with from the end of radial outside towards radially inner side.Due to the width of groove portion 25
Degree can reduce the contact area between groove portion 25 and protrusion 26 with broadening towards radially inner side, by stator
When in 23 insertion motor shells 12, groove portion 25 is not easy to block with protrusion 26.Also, since groove portion 25 and protrusion 26 are in groove portion
25 radial outer end contact, therefore rotation stopping function is more stable.
As shown in fig. 6, stator 23 is clamped and fixed in the axial direction between divider wall parts 12d and claw 27.Therefore, can
Stator 23 is fixed on motor shell 12 in the axial direction by simple structure.As shown in figure 5, groove portion 25 is in the outer of back yoke 23a
At the position being overlapped when being configured in circumferential surface from radial with tooth 23b.
Claw 27 is separated at equal intervals circumferentially from one another in the inner peripheral surface of peripheral wall portion 12a and is provided with multiple.Therefore, multiple
Claw 27 equably presses stator 23 in the circumferential, and anti-drop function is stablized.In the present embodiment, claw 27 is in peripheral wall portion 12a
Inner peripheral surface in separate 120 degree of intervals circumferentially from one another and there are three being arranged.In this case, three claws 27 are equal in the circumferential
Etc. ground press stator 23, it is ensured that the balance of the stability of anti-drop function, structure is good, and simplifies structure.
As shown in fig. 6, claw 27 has bearing surface 27a and guide surface 27b.Bearing surface 27a is from axial side and stator 23
Contact.Bearing surface 27a be in it is axially vertical planar.Guide surface 27b is as the radial inner end from bearing surface 27a is towards axially
Side and to radial outside extend.Guide surface 27b is in relative to axially inclined inclined plane type.According to the present embodiment, due to
Guide surface 27b inclination, therefore be easy for stator 23 to be inserted in peripheral wall portion 12a during fabrication.Also, since bearing surface 27a is in
With axially vertical anti-drop function stabilization that is planar, therefore preventing stator 23 from falling off using claw 27.
Claw 27 contacts at the position that the axial other side is leaned in axial one end than stator 23 with stator 23.In this embodiment party
In the example of formula, the middle section being located between axial both ends in the outer peripheral surface of stator 23 is than axial both ends to radial direction
Outside is prominent.Claw 27 is from the face contact towards axial side in the middle section of axial side and the outer peripheral surface of stator 23.
The axial position of claw 27 is overlapped with the axial position of stator 23 as a result,.That is, claw 27 can be configured to the axial direction in stator 23
In length, the axial shape for being able to suppress motor 20 increases because claw 27 are arranged in peripheral wall portion 12a.
As shown in Fig. 2, control base board 70 is plate-like.The plate face of control base board 70 expands towards axial direction, and with axially vertical
Exhibition.Control base board 70 is accommodated in control base board receiving portion 12f.Control base board 70 is configured at the axial another of divider wall parts 12d
Side.In the example of present embodiment, the other side configures control base board 70 far from divider wall parts 12d in the axial direction.Control base board
70 are electrically connected with stator 23.The coil line of the coil 23c of stator 23 is connected in control base board 70.It is for example filled in control base board 70
Equipped with inverter circuit.
Busbar 80 is connected device portion 12c holding.Busbar 80 is embedded in connector portion 12c.The two of busbar 80
First end in end is fixed on control base board 70.As shown in Figure 1, the second end in the both ends of busbar 80 is configured at
In the opening portion of the radial outside of connector portion 12c, and it is exposed to the outside of shell 11.Busbar 80 and it is connected to connector portion
The external power supply of 12c is electrically connected.It is supplied from external power supply via busbar 80 and control base board 70 to the coil 23c of stator 23
To power supply.
The rotation of the detection rotor 22 of rotation detection portion 75.As shown in Fig. 2, rotation detection portion 75 is configured at control base board receiving
In portion 12f.Rotation detection portion 75 is configured at the space between divider wall parts 12d and control base board 70.Rotation detection portion 75 has
Installing component 73, the second magnet 74 and the second rotation sensor 71.
Installing component 73 is for example made of nonmagnetic material.In addition, installing component 73 can also be made of magnetic substance.Mounting portion
Part 73 is in the annular shape centered on the first central axis J1.The inner peripheral surface of installing component 73 is fixed on the outer peripheral surface of motor drive shaft 21
In the axial other side end.Installing component 73 is configured at 3rd bearing 55 and the axial other side of bearing cage 12e.
The radially outer edge portion of installing component 73 is located at the position for leaning on axial side than the part in radially inner side in radially outer edge portion.
Second magnet 74 is in ring-type circumferentially.Second magnet 74 is in the annulus centered on the first central axis J1
Plate.The plate face of second magnet 74 is extended towards axial direction, and with axially vertical.Second magnet 74 has circumferentially alternating configuration
The pole N and the pole S.Second magnet 74 is installed on installing component 73.Second magnet 74 is fixed on the radially outer edge portion of installing component 73
In the face towards the axial other side.Second magnet 74 is such as using being fixed on installing component 73 bonding agent.Second magnet 74
The axial other side and radial outside covered by magnet cover.Installing component 73 and the second magnet 74 and motor drive shaft 21 together around
First central axis J1 rotation.
Second rotation sensor 71 is opposite with the second magnet 74 across gap.Second rotation sensor 71 in the axial direction with
Second magnet 74 is opposite.Second rotation sensor 71 is located at the axial other side of the second magnet 74.The inspection of second rotation sensor 71
Survey the magnetic field generated by the second magnet 74.Second rotation sensor 71 is, for example, Hall element.Second rotation sensor 71 is in week
It is spaced from each other at equal intervals and is provided with multiple upwards.Second rotation sensor 71 is for example spaced from each other 120 degree of intervals in the circumferential
And there are three being arranged.The magnetic field generated by the second magnet 74, which is rotated together with by the second magnet 74 with motor drive shaft 21, to be become
Change.The variation that the magnetic field is detected by the second rotation sensor 71, is able to detect the rotation of motor drive shaft 21.Second rotation sensor
Circumferential rotary angle position of the 71 such as detection motor drive shafts 21 relative to shell 11.Second rotation sensor 71 for example can also be with
It rephrases as rotary angle position detection sensor or rotation angle sensor etc..Second rotation sensor 71 is assemblied in control base board 70
The plate face towards axial side.Second rotation sensor 71, the second magnet 74, the radially outer edge portion of installing component 73 and axis
It holds from the position to overlap when maintaining part 12e is configured at from end on observation.
Deceleration mechanism 30 is connect with the part of the axial side of motor drive shaft 21.Deceleration mechanism 30 is configured at the axis of motor drive shaft 21
To the radial outside of the part of side.At the position that deceleration mechanism 30 is overlapped when being configured at from radial with eccentric axial portion 21b.
Deceleration mechanism 30 is configured between axial bottom wall part 13a and stator 23.
As shown in FIG. 2 and 3, deceleration mechanism 30 has external gear 31, internal gear 33, deceleration mechanism shell 13 and ring
Shape plate portion 40c.External gear 31 is in the substantially annulus plate centered on the second central axis J2.The plate face of external gear 31 is towards axis
To, and with axially vertical extend.The outer peripheral surface of external gear 31 is provided with gear part.External gear 31 by fourth bearing 56 with
Eccentric axial portion 21b connection.That is, deceleration mechanism 30 is connect by fourth bearing 56 with motor drive shaft 21.Fourth bearing 56 is embedded in outer
In gear 31.Motor drive shaft 21 is connected into and can mutually be rotated around the second central axis J2 with external gear 31 by fourth bearing 56.
External gear 31 has multiple pins 32.Pin 32 is in dash forward from the side in the axial direction that faces towards axial side of external gear 31
Out cylindric.Multiple pins 32 configure at equal intervals along the circumferential direction centered on the second central axis J2.In the example of present embodiment
In, it is provided with eight pins 32.
Internal gear 33 surrounds the radial outside of external gear 31 and is fixed on deceleration mechanism shell 13.Internal gear 33 is in first
Annular shape centered on central axis J1.Internal gear 33 is configured in the recessed portion 13n of the inner peripheral surface of cover canister portion 13b, and fixed
In cover canister portion 13b.Recessed portion 13n is located at the end of the axial other side in the inner peripheral surface of cover canister portion 13b, and the other side in the axial direction
And radially inner side opening.Although it is not shown, but when from end on observation, the outer peripheral surface of internal gear 33 is in multilateral shape.Internal gear
33 outer peripheral surface has multiple planar portions in the circumferential side by side.The inner peripheral surface of recessed portion 13n be provided with from radial outside with
The protrusion of the planar portions contact of internal gear 33.It is contacted by the planar portions of internal gear 33 with the protrusion of recessed portion 13n, it is suppressed that interior
Gear 33 is rotated relative to deceleration mechanism shell 13.In the present embodiment, resin is not used when manufacturing electric actuator 10
Insert-molding.It is fabricated separately deceleration mechanism shell 13 and internal gear 33, deceleration mechanism shell 13 and internal tooth are fixed by assembling
Wheel 33.The face contact towards the axial other side in the face towards axial side of internal gear 33 and recessed portion 13n.Internal gear 33
The face towards the axial other side contacted with the end face towards axial side of peripheral wall portion 12a.
Internal gear 33 is engaged with external gear 31.The inner peripheral surface of internal gear 33 is provided with gear part.The gear of internal gear 33
It is engaged with the gear part of external gear 31 in portion.The gear part of internal gear 33 is in circumferential a part (each left side of Fig. 2 and Fig. 3
Point) engaged with the gear part of external gear 31.The number of teeth of the gear part of the number of teeth and external gear 31 of the gear part of internal gear 33 is mutually not
It is identical.The number of teeth of the gear part of the gear ratio external gear 31 of the gear part of internal gear 33 is more.
Annular plate section 40c is a part of output section 40.Annular plate section 40c is to connect deceleration mechanism 30 with output section 40
Interconnecting piece.As shown in Fig. 2, annular plate section 40c is configured at the axial side of external gear 31.Annular plate section 40c is in first
Annulus plate centered on mandrel line J1.The part of radial outside in annular plate section 40c is leaned on positioned at the part than radially inner side
At the position of the axial other side.The axial width of the part of the radial outside of annular plate section 40c is more inside than the diameter of annular plate section 40c
The axial width of the part of side is thick.Annular plate section 40c has along multiple hole 40d axially through annular plate section 40c.Hole 40d matches
It is placed in the part of the radial outside of annular plate section 40c.
As shown in figure 3, multiple hole 40d are configured at equal intervals along the circumferential direction centered on the first central axis J1.In this implementation
In the example of mode, it is provided with eight hole 40d.The quantity of hole 40d is identical as the quantity of pin 32.Hole 40d is in circular hole.Hole 40d's
Internal diameter is bigger than the outer diameter of pin 32.Multiple pins 32 are inserted in multiple hole 40d.The outer peripheral surface of pin 32 and the inner circumferential of hole 40d
Face is inscribed.That is, a part of the outer peripheral surface of pin 32 with the inner peripheral surface of hole 40d in circumferential surface contacts.The inner peripheral surface of hole 40d is by pin 32
It is that can swing by the bearing of external gear 31.
Output section 40 is the part for exporting the driving force of electric actuator 10.As shown in Fig. 2, output section 40 has cylindrical wall
Portion 40b, annular plate section 40c and output shaft 41.Tubular wall portion 40b is in be prolonged centered on the first central axis J1 along axial direction
The tubular stretched.Tubular wall portion 40b is in from the radially inner edge portion of the annular plate section 40c cylindrical shape that side extends in the axial direction.Cylindrical wall
Portion 40b is in the cylindrical shape with the end of another side opening in the axial direction.The end of axial side in the inner peripheral surface of tubular wall portion 40b
It is chimeric to have first bearing 51.Motor drive shaft 21 is connected into and can mutually be rotated with output section 40 by first bearing 51 as a result,.First axle
Holding 51, connect into motor drive shaft 21 and output section 40 can be around the first central axis J1 relative rotation.In tubular wall portion 40b
There are the ends of the axial side of motor drive shaft 21 in portion.The end face towards axial side of motor drive shaft 21 across gap and and cylindrical wall
The face towards the axial other side of the bottom of portion 40b is opposite.
Tubular wall portion 40b is configured in bearing canister portion 13d.Configured with the between tubular wall portion 40b and bearing canister portion 13d
Two bearings 54.Being fitted into bearing canister portion 13d has second bearing 54.That is, being fitted into bearing canister portion 13d has second bearing 54.?
Being fitted into second bearing 54 has tubular wall portion 40b.Second bearing 54 is clamped in the outer peripheral surface and bearing canister portion of tubular wall portion 40b
Between the inner peripheral surface of 13d.Second bearing 54 can rotate the bearing of output section 40 relative to shell 11.
Tubular wall portion 40b is clamped between first bearing 51 and second bearing 54 from radial.Second bearing 54 and tubular
Wall portion 40b is clamped between bearing canister portion 13d and first bearing 51 radially.First bearing 51, tubular wall portion 40b, second
Bearing 54 and bearing canister portion 13d are configured at the position being overlapped radially.That is, first bearing 51, output section 40, the second axis
It holds at the position to overlap when 54 and bearing canister portion 13d is configured at from radial.
Second bearing 54 is in the tubular axially extended.Second bearing 54 is, for example, sliding bearing.Second bearing 54 has
Bearing canister portion 54a and bearing flange portion 54b.Bearing canister portion 54a is in be axially extended centered on the first central axis J1
It is cylindric.Bearing canister portion 54a is clamped between tubular wall portion 40b and bearing canister portion 13d from radial.
Bearing flange portion 54b is in the annulus plate centered on the first central axis J1.Bearing flange portion 54b is from bearing cartridge
The end of the axial other side of portion 54a is extended to radial outside.The plate face of bearing flange portion 54b is hung down towards axial direction, and with axial
Directly extend.Bearing flange portion 54b supports the end face 13i and ring-type towards the axial other side of canister portion 13d from being axially held
Between plate portion 40c.The face towards axial side of bearing flange portion 54b is contacted with the end face 13i of bearing canister portion 13d.Bearing is convex
The face towards axial side in the face and the part of the radially inner side of annular plate section 40c towards the axial other side of edge 54b connects
Touching.Inhibit second bearing 54 in radial direction and axially with respect to the movement of shell 11.
Annular plate section 40c is extended from the end of the axial other side of tubular wall portion 40b to radial outside.41 edge of output shaft
It is axially extending, and it is configured at the axial side of motor drive shaft 21.Output shaft 41 is in the cylinder centered on the first central axis J1
Shape.From the bottom of tubular wall portion 40b, side extends output shaft 41 in the axial direction.Output shaft 41 is inserted in prominent canister portion 13c
It is interior.Side is prominent in the axial direction than prominent canister portion 13c for the part of the axial side of output shaft 41.Axial the one of output shaft 41
The part of side is equipped with the other component of the driving force of output electric actuator 10.In the present embodiment, output section 40 is one
The component of body.
When motor drive shaft 21 is rotated around the first central axis J1, eccentric axial portion 21b (the second central axis J2) is in the circumferential
It is revolved centered on the first central axis J1.The revolution of eccentric axial portion 21b is transmitted to external gear 31, external tooth via fourth bearing 56
Wheel 31 revolves in internal gear 33 around the first central axis J1.External gear 31 changes the inner peripheral surface of hole 40d and the outer peripheral surface of pin 32
It is swung while inscribed position.At this point, the position that the gear part of external gear 31 is engaged with the gear part of internal gear 33 is in circumferential direction
On change.The number of teeth of external gear 31 and the number of teeth of internal gear 33 are different, and internal gear 33 is fixed on deceleration mechanism
Shell 13 is without rotating.Therefore, external gear 31 is relative to internal gear 33 around the second central axis J2 rotation.
The direction of 31 rotation of external gear is the contrary direction rotated with motor drive shaft 21.External gear 31 is around the second center
The rotation (rotation) of axis J2 is transmitted to annular plate section 40c via hole 40d and pin 32.Annular plate section 40c is around the first center as a result,
Axis J1 rotation, output section 40 is rotated around the first central axis J1.In this way, the rotation of motor drive shaft 21 is transmitted via deceleration mechanism 30
To output shaft 41.
The rotation of output section 40 is slowed down by deceleration mechanism 30 relative to the rotation of motor drive shaft 21.Specifically, in this reality
It applies in the deceleration mechanism 30 of mode, the reduction ratio R R=- (N2- of the rotation of output section 40 relative to the rotation of motor drive shaft 21
N1)/N2 is indicated.Indicate that the minus symbol of the right front of the formula of reduction ratio R indicates the direction of rotation for the output section 40 being decelerated
It is opposite with the direction of rotation of motor drive shaft 21.N1 is the number of teeth of external gear 31, and N2 is the number of teeth of internal gear 33.As an example, outside
The number N of teeth 1 of gear 31 be 59 and internal gear 33 number N of teeth 2 be 60 in the case where, reduction ratio R is -1/60.In this way, this embodiment party
The deceleration mechanism 30 of formula is capable of increasing the reduction ratio R of the rotation of the rotation of output section 40 relative to motor drive shaft 21.Thereby, it is possible to increase
The rotation torque of big output section 40.
The rotation of the detection of rotation detection device 60 output section 40.As shown in Fig. 2, rotation detection device 60 has the first magnet
63 and first rotation sensor 62.First magnet 63 is in ring-type circumferentially.First magnet 63 is in the first central axis
Cylindrical shape centered on J1.First magnet 63 has the pole N and the pole S of circumferentially alternating configuration.First magnet 63 is installed on ring-type
The face towards axial side of plate portion 40c.First magnet 63 is fixed on the part of the radial outside of annular plate section 40c.That is, first
Magnet 63 is fixed on output section 40.First magnet 63 rotates together with annular plate section 40c around the first central axis J1.
At the position being overlapped when first magnet 63 is configured at from radial with bearing canister portion 13d.The configuration of first magnet 63
At the position opposite with the bearing radial outside of canister portion 13d.First magnet 63 surrounds the radial outside of bearing canister portion 13d.?
Gap is provided between the inner peripheral surface of first magnet 63 and the outer peripheral surface for supporting canister portion 13d.First magnet 63 is located at radially
It supports between canister portion 13d and cover canister portion 13b.First magnet 63 is configured at the space of the radial outside of bearing canister portion 13d.First magnetic
Iron 63 is configured at the space between annular plate section 40c and bottom wall part 13a.
First rotation sensor 62 is opposite with the first magnet 63 across gap.First rotation sensor 62 in the axial direction with
First magnet 63 is opposite.First rotation sensor 62 is located at the axial side of the first magnet 63.The detection of first rotation sensor 62
The magnetic field generated by the first magnet 63.First rotation sensor 62 is, for example, Hall element.The magnetic field generated by the first magnet 63
It is rotated together with and is changed with output section 40 by the first magnet 63.The change in the magnetic field is detected by the first rotation sensor 62
Change, is able to detect the rotation of output section 40.First rotation sensor 62 for example detects circumferential direction of the output section 40 relative to shell 11
Rotary angle position.First rotation sensor 62 can also for example rephrase as rotary angle position detection sensor or rotation angle
Sensor etc..
At the position being overlapped when first rotation sensor 62 is configured at from radial with bearing canister portion 13d.First rotation
Sensor 62 is configured at the position opposite with the bearing radial outside of canister portion 13d.First rotation sensor 62 is located at bottom wall part
The axial other side of 13a.First rotation sensor 62 is configured between bottom wall part 13a and the first magnet 63.First rotation sensing
Device 62 is installed on installation wall portion 13h.First rotation sensor 62 is mounted wall portion 13h holding.First rotation sensor 62 is set up
And it is fixed between the one group of installation wall portion 13h extended parallel to each other.In the first rotation sensor 62 and bottom wall part 13a
Between be provided with gap.Although illustration omitted, in the setting of the first rotation sensor 62, there are three sensor terminals.Three sensings
Device terminal is power supply sensor terminal, signal transmitting sensor terminal and earthy sensor terminal.
Control base board 70 is electrically connected by the first distribution component 91 and the second distribution component 92 with the first rotation sensor 62.
First distribution component 91 and the second distribution component 92 are respectively provided with three wirings.First distribution component 91 is protected by motor shell 12
It holds.First distribution component 91 passes through the first wiring maintaining part 14.At least part of first distribution component 91 is embedded in first
In wiring maintaining part 14.First distribution component 91 is electrically connected with control base board 70 and the second distribution component 92.Second wiring part
Part 92 is decelerated the holding of mechanism shell 13.Second distribution component 92 passes through the second wiring maintaining part 15.Second distribution component 92
At least part is embedded in the second wiring maintaining part 15.Second distribution component 92 and the first rotation sensor 62 and first
Distribution component 91 is electrically connected.Pass through assembling motor shell 12 and deceleration mechanism shell 13, the first distribution component 91 and the second wiring
Component 92 is electrically connected to each other.
In addition, the utility model is not limited to embodiment above-mentioned, such as following the description, this technology side is not being departed from
The change etc. of structure is able to carry out in the range of the purport of case.
In embodiment above-mentioned, the example that motor 20 is set to electric actuator 10 is enumerated, but has been not limited to
This.Motor 20 also can be set in the device etc. in addition to electric actuator 10.Motor 20 can also be not provided in other devices
Deng, but be made of 20 monomer of motor.But electric actuator 10 is set in the such motor 20 of embodiment as the aforementioned
In the case of, following function and effect can be obtained.For example, in the case where electric actuator 10 is set to vehicle etc., root sometimes
Shell 11 made of resin is used according to freedom degree of lightweight or shape etc..By the way that the motor 20 of the utility model is used for
Electric actuator 10 with shell 11 made of resin can be such that manufacture facilitates, can cut down manufacturing cost.
In embodiment above-mentioned, the radially constant example of the circumferential width of protrusion 26 has been enumerated, but and it is unlimited
Due to this.For example, the circumferential width of protrusion 26 can also become larger with towards radially inner side.Also, protrusion 26 be
The rib axially extended in the inner peripheral surface of peripheral wall portion 12a, but it's not limited to that.Protrusion 26 is also possible in peripheral wall portion
It is outstanding simple raised etc. to radially inner side in the inner peripheral surface of 12a.Also, it enumerates groove portion 25 and protrusion 26 is set respectively
It is equipped with multiple examples, but can also respectively be one.Also, the position that groove portion 25 is configured in the outer peripheral surface of back yoke 23a is enumerated
The example of part between tooth 23b adjacent in the circumferential, but it's not limited to that.Groove portion 25 can also be configured at back yoke
At the position being overlapped radially with tooth 23b in the outer peripheral surface of 23a.
In embodiment above-mentioned, enumerated claw 27 bearing surface 27a be in axially vertical planar example, but
It is that it's not limited to that.For example, bearing surface 27a can also be with from the inner peripheral surface of peripheral wall portion 12a towards radially inner side and to axis
Extend to the other side.Also, claw 27 has been enumerated at the position that the axial other side is leaned in axial one end than stator 23 and stator
The example of 23 contacts, but it's not limited to that.Claw 27 can also be contacted with the end face of the axial side of stator 23.
In embodiment above-mentioned, the example that the first rotation sensor 62 is installed on installation wall portion 13h has been enumerated, but simultaneously
It is not limited to this.For example, the first rotation sensor 62 can also be installed on bottom wall part 13a.As long as 62 energy of the first rotation sensor
The rotation of output section 40 is enough detected, such as is also possible to magnetoresistive element.As long as the second rotation sensor 71 is able to detect horse
Up to the rotation of axis 21, such as it is also possible to magnetoresistive element.
Also, rotation detection device 60 also can have circuit board (not shown).In this case, circuit board arrangement is in subtracting
In fast mechanism shell 13.First rotation sensor 62 and circuit board electrical connection, circuit board are electrically connected with control base board 70.
As long as also, deceleration mechanism 30 have increased and the rotation of motor drive shaft 21 is slowed down and is transmitted to output section 40
The function of torque is not limited to the structure illustrated in embodiment above-mentioned.
In embodiment above-mentioned, output section 40 is integrated component, but it's not limited to that.For example, it is also possible to
The annular plate section 40c and tubular wall portion 40b and output shaft 41 of output section 40 are fixed by welding etc..
In addition it is also possible to which combination is in embodiment above-mentioned, deformation in the range of not departing from the purport of the utility model
Each structure (constituent element) illustrated in example and other modes etc., and be able to carry out structure it is additional, omit, displacement and
Other changes.Also, the utility model is not limited by embodiment above-mentioned, is only defined in claims.
Claims (17)
1. a kind of motor comprising:
Rotor has the motor drive shaft extended along central axis；
Stator is opposite with the rotor across gap radially；And
Motor shell made of resin accommodates the stator,
The motor shell includes
The peripheral wall portion of tubular, axial side it is open-ended, and covered around the central axis along the central axis；
And
Divider wall parts cover the stator accommodated in the peripheral wall portion from the axial other side,
The groove portion for being recessed to radially inner side and axially extending is provided in the outer peripheral surface of the stator,
It is provided in the inner peripheral surface of the peripheral wall portion of the motor shell
Protrusion, it is prominent to radially inner side, and be inserted in the groove portion；And
Claw, from axial side and the stator contact.
2. motor according to claim 1, which is characterized in that
The protrusion is the rib that axially extends of inner peripheral surface in the peripheral wall portion.
3. motor according to claim 2, which is characterized in that
It is separated circumferentially from one another in the outer peripheral surface of the stator and has been equally spaced multiple groove portions.
4. motor according to claim 3, which is characterized in that
It is separated circumferentially from one another in the inner peripheral surface of the peripheral wall portion and has been equally spaced multiple protrusions.
5. motor according to claim 3, which is characterized in that
The quantity of the protrusion is identical as the quantity of the groove portion or fewer than the quantity of the groove portion.
6. motor according to claim 4, which is characterized in that
The quantity of the protrusion is identical as the quantity of the groove portion or fewer than the quantity of the groove portion.
7. motor according to claim 5, which is characterized in that
The circumferential width of the groove portion becomes larger with from the end of radial outside towards radially inner side.
8. motor according to claim 6, which is characterized in that
The circumferential width of the groove portion becomes larger with from the end of radial outside towards radially inner side.
9. motor according to claim 5, which is characterized in that
The stator includes
Cricoid back yoke, circumferentially；And
Multiple teeth, they extend from the back yoke to radially inner side, and spaced at intervals in the circumferential and configure,
At the position that the groove portion is overlapped when be configured at from radial in the outer peripheral surface of the back yoke with the tooth.
10. motor according to claim 6, which is characterized in that
The stator includes
Cricoid back yoke, circumferentially；And
Multiple teeth extend from the back yoke to radially inner side, and spaced at intervals in the circumferential and configure,
At the position that the groove portion is overlapped when be configured at from radial in the outer peripheral surface of the back yoke with the tooth.
11. motor according to claim 10, which is characterized in that
The stator is clamped and fixed in the axial direction between the divider wall parts and the claw.
12. motor according to claim 11, which is characterized in that
It is separated circumferentially from one another in the inner peripheral surface of the peripheral wall portion and has been equally spaced multiple claws.
13. motor according to claim 12, which is characterized in that
120 degree are separated circumferentially from one another in the inner peripheral surface of the peripheral wall portion to be positioned apart from there are three the claw.
14. motor according to claim 13, which is characterized in that
The motor is provided with along the intercommunicating pore axially through the divider wall parts,
From the position that the intercommunicating pore and the claw are overlapped when being configured at from end on observation.
15. motor according to claim 14, which is characterized in that
The claw includes
Bearing surface, from axial side and the stator contact, and in it is axially vertical planar；And
Guide surface, as the radial inner end from the bearing surface extends towards axial side to radial outside.
16. motor according to claim 15, which is characterized in that
The claw at the position that the axial other side is leaned in axial one end than the stator with the stator contact.
17. a kind of electric actuator comprising:
Motor as claimed in claim 3；And
Deceleration mechanism is connect with the part of the axial side of the motor drive shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017189034A JP2019068520A (en) | 2017-09-28 | 2017-09-28 | Motor and electric actuator |
| JP2017-189034 | 2017-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208782583U true CN208782583U (en) | 2019-04-23 |
Family
ID=66162573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821587883.0U Expired - Fee Related CN208782583U (en) | 2017-09-28 | 2018-09-27 | Motor and electric actuator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019068520A (en) |
| CN (1) | CN208782583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142635A (en) * | 2021-11-02 | 2022-03-04 | 北京马威电动力技术有限公司 | Stator core, stator and motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116529993A (en) | 2020-11-25 | 2023-08-01 | 日产自动车株式会社 | Inverter-integrated motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009033884A (en) * | 2007-07-27 | 2009-02-12 | Sumitomo Electric Ind Ltd | Stator and manufacturing method of stator |
| JP2010193653A (en) * | 2009-02-19 | 2010-09-02 | Denso Corp | Rotary actuator |
| JP5965229B2 (en) * | 2012-07-10 | 2016-08-03 | アスモ株式会社 | Rotating electric machine |
| CN106787309A (en) * | 2015-11-19 | 2017-05-31 | 德昌电机(深圳)有限公司 | Single-phase permanent brushless motor |
-
2017
- 2017-09-28 JP JP2017189034A patent/JP2019068520A/en active Pending
-
2018
- 2018-09-27 CN CN201821587883.0U patent/CN208782583U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142635A (en) * | 2021-11-02 | 2022-03-04 | 北京马威电动力技术有限公司 | Stator core, stator and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019068520A (en) | 2019-04-25 |
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Granted publication date: 20190423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |