Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
  • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
  • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
  • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
  • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
  • F16D3/226—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part
  • F16D3/2265—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part the joints being non-telescopic
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K17/00—Arrangement or mounting of transmissions in vehicles
  • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
  • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
  • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H48/00—Differential gearings
  • F16H48/06—Differential gearings with gears having orbital motion
  • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
  • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
  • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
  • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
  • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
  • F16D2003/22303—Details of ball cages
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
  • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
  • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
  • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
  • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
  • F16D2003/22326—Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D2300/00—Special features for couplings or clutches
  • F16D2300/10—Surface characteristics; Details related to material surfaces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H48/00—Differential gearings
  • F16H48/06—Differential gearings with gears having orbital motion
  • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
  • F16H2048/082—Differential gearings with gears having orbital motion comprising bevel gears characterised by the arrangement of output shafts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H48/00—Differential gearings
  • F16H48/06—Differential gearings with gears having orbital motion
  • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
  • F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H48/00—Differential gearings
  • F16H48/38—Constructional details
  • F16H48/40—Constructional details characterised by features of the rotating cases
  • F16H2048/405—Constructional details characterised by features of the rotating cases characterised by features of the bearing of the rotating case
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T403/00—Joints and connections
  • Y10T403/32—Articulated members
  • Y10T403/32008—Plural distinct articulation axes
  • Y10T403/32041—Universal

Definitions

• the invention relates to a differential gear with two constant velocity joints integrated into the gear basket, each having an inner joint part connected to a shaft journal, a ball cage for receiving the torque-transmitting balls and an outer joint part which is in engagement with the differential wheels in the transmission basket.
• Such gears are particularly suitable for the rear axle drive of motor vehicles.
• a coupling between two driven axes can also be represented with such a transmission.
• the integration of the joints should reduce the distance from the center of the gearbox to the center of the joints of the constant velocity joints, since this increases the possible length of the shafts used.
• the articulation angles should be kept as small as possible for reasons of service life and the lowest possible noise level.
• the present invention has for its object to improve a differential gear of the type mentioned in such a way that the axial distance between the gear center and the center of the joint can be further reduced and the structural design simplified and the - P -
• the solution for a gearbox of the type mentioned at the beginning lies in a ring or disc body located in the gear center plane and held in the gear basket, which has ring-shaped spherical section surfaces as control surfaces for controlling the ball cages on the bisector plane when the shaft journals are bent, the centers of their curvature axially opposite one another the centers of the joints are offset.
• the basic mode of operation is that the control of the ball cage on the bisecting plane does not take place from an articulated outer part in cooperation with the inner joint part, but that part of the control function for both constant velocity joints is designed to be simple middle ring body is transmitted.
• both the central ring or disk body and the outer joint parts are to be designed in a simple construction as sheet metal or stamped parts.
• the joints are designed as double offset joints, a further outer control surface for the one-piece ball cage being able to be formed directly in the gear basket.
• this control surface With the same center of curvature of this control surface with respect to the control surface on the central ring or disk body, the two control surfaces can have different curvature diameters. In contrast, the center of curvature is in each case - -
• control surface formed on the inner joint part for the ball cages is offset in the opposite direction with respect to the central joint plane by the same amount.
• the ball cages can be divided in the middle and in particular consist of two half-shell-like annular cage halves. At least in each case the inside of this control body is controlled when the pivot pin is angled by the control surface according to the invention on the central ring or disk body on the one hand and an inner control surface on the inner joint part on the other hand to the bisecting plane, which each have axially offset center points with respect to the center of the joint .
• the second half of the cage can be designed, for example, as a parallel-walled support body which is supported directly on the gear basket.
• a preferred embodiment is, however, that both cage halves are symmetrical and accordingly symmetrical control surfaces on the central ring body on the one hand and on the gear cage on the other hand can be provided.
• the manufacture of the cage halves is simplified in this way and is again significantly cheaper compared to the first proposed solution.
• a further solution to the underlying task consists in an annular or disc body located in the gear center plane and held in the gear basket, annular spherical section surfaces on the ring or disc body and in the gear basket for axially holding the Joint inner part are provided and the centers of curvature of the base of the ball grooves in the outer joint part on the one hand and in the inner joint part on the other hand in a longitudinal section through the joints for controlling the balls when the shaft journals are bent onto the bisecting plane are axially offset from the center points of the joints.
• the balls are controlled on the bisecting plane directly by the inner joint part and the outer joint part, the longitudinal section of the bottom of the ball grooves forming a mouth-like opening, which requires the balls to be supported by a special support body in the manner of a half-shell with an internal opening.
• the inner joint part is supported directly on the central ring or disk body, while the parallel-walled, shell-shaped support body is supported on the outside on a support surface in the gear basket and thus also fixes the entire joint in this direction.
• a reverse arrangement is also possible, according to which the inner joint part is supported directly on an annular spherical section surface in the gear basket and the half-shell-shaped support body on the inside directly on the central ring or disc body.
• the outer joint part is at the same time designed as a drive bevel gear, which is supported on the outside on the gear basket and on the inside directly and exclusively on the differential gears, a clearance of a suitable size being provided in order to prevent noise. and ensure low-wear running. Except for the radial stop surface no axial securing means need to be provided, so that the axial fixing of the outer gear part results solely from the assembly of the gear halves.
• the support or control surfaces on the central ring or disk body being an essential part of the invention.
• the outer joint part In the shortened construction of the outer joint part, which is brought about by the direct axial support or control of the cage or the inner joint part with respect to the central disk body, in addition to the shortened construction there is also the possibility of simplified production.
• the outer joint part can be produced as a simple deep-drawn part or as a stamped part from sheet metal or can be made from internally cleared pipe material.
• the structural simplification results from the elimination of the internal support surfaces on the outer joint part for axial support and, if necessary, for controlling the inner joint part or the cage.
• the outer joint part With this inward support independent of the outer joint part, the outer joint part generally has an undercut-free shape with a cylindrical outer surface and, in the first-mentioned embodiments, also with a cylindrical inner surface, into which the grooves for receiving the balls are introduced.
• the joint is regularly supported externally by parts of the ball cage or the corresponding shell body.
• the central support or disk body can be plastic-coated or consist entirely of wear-resistant plastic. A simple sheet metal ring for this component is advantageous and particularly cheap.
• 1 is a differential gear with two integrated constant velocity joints, the ball cages are controlled by a central ring body,
• Fig. 4 shows a joint with a central support ring as a detail in a second embodiment.
• a differential gear basket 1 is shown, in the center Wel lenz-pfen 2 are held by means of dowel pins 3.
• two differential or planet wheels 4 are mounted, which have spherical sliding surfaces 5 with respect to the gearbox cage 1.
• the differential bevel gears are engaged and mesh with outer joint parts 6, which are in a cylindrical receiving bore 7 of the gear basket and are guided to radial
• an inner joint part 11 is connected in a rotationally fixed manner via ball bodies 10.
• the spherical bodies 10 are each guided in a spherical cage 12 which has a first outer sliding surface which interacts with a control surface 13 on a central ring or disk body 23 and an inner sliding surface which has a control surface 14 on the inner joint part 11
• a second outer sliding surface of the ball cage 12 is in engagement with a further control surface 15, which has a common center point with the control surface 13, and is provided directly in the gear basket 1.
• the center points Ca, Ci of the outer and inner control surfaces are offset axially in opposite directions relative to the center point M joint.
• the inner joint part is each connected to a shaft journal 16.
• Conventional sealing means 17 are arranged between the gear basket 1 and the shaft journal 16.
• the gear basket 1 is held in a gear housing 19 by means of an inclined roller bearing 18 and is sealed off from the latter.
• the gearbox cage 1 is composed of two cage halves, with connecting bolts 21 simultaneously holding a ring gear 22.
• the gear basket 1 with the inclined roller bearing 18 is essentially recognizable, in which a shaft journal 2 is held with a differential wheel 4.
• the constant velocity joint is made up of the outer joint part 6, the inner joint part 11 and a ball cage consisting of two support bodies 12a and 12b.
• the outer joint part 6 engages directly with the differential wheel 4 via a toothing.
• An annular body 23 is contained within the shaft journal 2 in the central plane.
• the central ring body 23 again has a control surface 13, while a corresponding control surface 14-c is provided on the gele ⁇ inne part which guide the support body 12a to the bisecting plane.
• the center points Ci and Ca of these control surfaces are axially offset from one another in the opposite direction with respect to the center point M of the joint. The same centers are reversed _ _
• the support surface 13 on the central ring body 23 has its center of curvature in the center of the joint M, as does a corresponding support surface 17 in the gear basket 1.
• the ball grooves in the outer joint part and in the inner joint part 11 each have a curvature in longitudinal section, the center points Ci and Ca are axially offset from the center of the joint M in opposite directions.
• the spherical bodies 10 are held in the opening grooves by a shell-shaped support body, the parallel-walled support body 20 being supported on the support surface 15 in the gear basket 1.
• the joint inner part 11, however, is supported directly on the ring body 23.
• the arrangement is essentially equivalent to that in FIG.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Retarders (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6283344

Family Applications (1)

Country Status (8)

Families Citing this family (21)

Family Cites Families (18)

• 1985
  • 1985-10-11 DE DE19853536289 patent/DE3536289A1/de active Granted
• 1986
  • 1986-10-01 IT IT8607074U patent/IT8607074V0/it unknown
  • 1986-10-01 IT IT05220/86A patent/IT1201653B/it active
  • 1986-10-07 US US06/916,304 patent/US4840087A/en not_active Expired - Fee Related
  • 1986-10-09 JP JP61239401A patent/JPS6293540A/ja active Pending
  • 1986-10-09 GB GB08624267A patent/GB2181501A/en not_active Withdrawn
  • 1986-10-10 WO PCT/DE1986/000411 patent/WO1987002435A1/de not_active Application Discontinuation
  • 1986-10-10 EP EP86905742A patent/EP0242374A1/de not_active Withdrawn
  • 1986-10-10 FR FR8614160A patent/FR2588630A1/fr active Pending
  • 1986-10-10 JP JP61505502A patent/JPS62502559A/ja active Granted

Non-Patent Citations (1)

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