WO2006030858A1 - 固定型等速自在継手 - Google Patents
固定型等速自在継手 Download PDFInfo
- Publication number
- WO2006030858A1 WO2006030858A1 PCT/JP2005/017041 JP2005017041W WO2006030858A1 WO 2006030858 A1 WO2006030858 A1 WO 2006030858A1 JP 2005017041 W JP2005017041 W JP 2005017041W WO 2006030858 A1 WO2006030858 A1 WO 2006030858A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- joint member
- stem
- joint
- constant velocity
- velocity universal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
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- 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
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
- F16D1/0864—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to tangential loading of the hub, e.g. a split hub
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- 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
- F16D3/224—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 sphere
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- 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
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
- F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
- F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/041—Non-metallic bellows
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- 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
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections
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- 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
- F16D2003/22313—Details of the inner part of the core or means for attachment of the core on the shaft
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- 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
- F16D2003/22323—Attachments to the shaft of the inner joint member whereby the attachments are distanced from the core
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- 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
Definitions
- the present invention relates to a fixed type constant velocity universal joint, and more particularly to a fixed type constant velocity universal joint suitable for an application that dislikes rotating backlash, such as an automobile steering device.
- the steering device transmits a rotational torque applied to a steering wheel (a handle) 101 from a main shaft 102 of a steering column to an intermediate shaft 103 through a gear shaft 105 of a steering gear 104. And then converted into linear motion by the mechanism of the steering gear 104, and transmitted to the wheels as a steering force through the link mechanism. Since the steering device needs to balance the space mounted on the vehicle and absorb the impact at the time of collision, universal joints 106 and 106 are arranged between the multiple shafts 102, 103, and 105, respectively. Angular displacements (operating angles ⁇ , ⁇ ) are attached in the axial direction of 102, 103, 105.
- the universal joint 106 applied to the steering device is typically a double cardan joint in which two joints of a cardan joint using a cross shaft and two cardan joints are combined.
- the universal joint 106 applied to the steering device is required to increase the design flexibility of the vehicle layout.
- the joint part is required to have a high angle, and from the viewpoint of improving the steering performance, Since it is required to improve the constant velocity of the joint, recently, it has been proposed to use a torque transmission ball type fixed constant velocity universal joint instead of a cardan joint or the like (for example, Patent Documents). 1).
- a torque transmission ball type fixed constant velocity universal joint a tweeper type (hereinafter referred to as “BJ”) and an undercut free type (hereinafter referred to as “UJ”) are widely known.
- Both BJ and UJ are an outer joint member in which a plurality of track grooves are formed on the spherical inner surface of the cup portion, an inner joint member in which a plurality of track grooves are formed on the spherical outer surface of the inner ring, and an outer joint member.
- an outer joint member in which a plurality of track grooves are formed on the spherical inner surface of the cup portion
- an inner joint member in which a plurality of track grooves are formed on the spherical outer surface of the inner ring
- an outer joint member Between the ball arranged on the wedge-shaped ball track formed by the cooperation of the track groove and the track groove of the inner joint member, and the spherical inner surface of the outer joint member and the spherical outer surface of the inner joint member And a holder that holds the ball (see, for example, Patent Document 1).
- BJ the entire area of each track groove is curved.
- UJ one end of each track groove is straight and parallel to the axis
- the fixed type constant velocity universal joint has a gap between the track groove and the ball of the outer joint member and between the track groove and the ball of the inner joint member in terms of function and processing surface.
- These gaps are called radial gaps and axial gaps depending on the direction in which one of the outer joint member and the inner joint member can be moved when the joint is neutral.
- These gaps have a large influence on the circumferential backlash (rotational backlash) between the outer joint member and the inner joint member.
- the fixed type constant velocity universal joint is inevitably subject to rotation backlash of a certain level or more, and thus has not been generally adopted for applications such as an automobile steering device that dislikes rotation backlash.
- the fixed type constant velocity universal joint is provided with a preload means to close the gap between the track groove and the ball so that it can be applied to applications where rotation backlash is avoided. is there.
- the universal joint 106 applied to the steering device includes a connecting member 107 for fixing to the shafts 102, 103, and 105.
- a connecting member 107 what is called a yoke is generally used.
- the yoke forms an axial slit 108 in a part of a cylindrical body into which a shaft can be fitted, and a pair of tabs 109 from both sides of the slit 108 forming portion in a substantially radial direction. It extends in parallel to the outside.
- the pair of tabs 109 are formed with through holes 109a for passing through fastening members such as bolts and rivets (not shown). Then, by tightening the fastening member passed through the through-hole 109a and narrowing the slit width, the shaft fitted in the yoke is fastened and fixed.
- the connecting member 107 such as a yoke needs to change the inner diameter of the connecting member 107 and the diameter of the through hole 109a according to the specification of the shaft to be connected, and the fixed type constant velocity universal joint. From the viewpoint of enhancing the versatility of the fixed type constant velocity universal joint, it is molded separately from In general, it is generally integrated by welding or friction welding (hereinafter referred to as welding). If the connecting member 107 is joined to the fixed type constant velocity universal joint by welding or the like, there is no rotation backlash between the connecting member 107 and the fixed type constant velocity universal joint. In addition, there is a possibility that the joint is exposed to high temperature and distorted. If distortion occurs at the joint, the yield will decrease due to reduced joint accuracy and cracking.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-130082
- Patent Document 2 Japanese Patent Publication No. 60-502064
- the present invention has been developed in view of such circumstances, and its purpose is to eliminate the need for welding or the like for joining the stem portion and the connecting member, and between the stem portion and the connecting member. It is an object of the present invention to provide a fixed type constant velocity universal joint configured so as not to cause a rotation backlash.
- a plurality of track grooves are formed on the spherical inner surface of the cup portion, and the stem portion is extended from the outer diameter surface of the cup portion.
- An outer joint member, an inner joint member in which a plurality of track grooves are formed on the spherical outer surface of the inner ring and the stem portion extends from the inner ring to the cup opening side, a track groove of the outer joint member, and a track of the inner joint member
- the ball disposed on the wedge-shaped ball track formed by the cooperation of the grooves and the spherical inner surface of the outer joint member and the spherical outer surface of the inner joint member A holding part for holding the pressing force of the pressing part force on the inner joint member side and a receiving part for receiving the pressing force of the pressing part force.
- This is a fixed type constant velocity universal joint that is preloaded so that the rod contacts the track groove of the outer joint member and the track groove of the inner joint member!
- the outer joint member and the Z or inner joint member have a connecting member that is press-fitted into the stem portion, and the engaging hole provided in each of the stem portion and the connecting member is phase-matched.
- the retaining member was press-fitted into
- the connecting member is spline press-fitted into the stem portion of the outer joint member and the Z or inner joint member as described above, and the retaining member is provided in the engagement hole provided in each of the stem portion and the connecting member. Therefore, it is possible to prevent rotational backlash between the stem portion and the connecting member, and to suppress fatigue damage of the retaining member.
- FIG. 1 is an axial sectional view showing a first embodiment of a universal joint according to the present invention.
- FIG. 2 is an axial sectional view showing a state in which an operating angle is set between an outer joint member and an inner joint member.
- FIG. 3 is an enlarged cross-sectional view of a main part showing a preload means.
- FIG. 4 is an axial sectional view showing a second embodiment of the universal joint according to the present invention.
- FIG. 5 is an axial sectional view showing a third embodiment of a universal joint according to the present invention.
- FIG. 6 is a conceptual diagram of a steering device.
- FIG. 7A is an axial sectional view of a connecting portion used in a conventional universal joint.
- FIG. 7B is a cross-sectional view in the direction perpendicular to the axis of line BB in FIG. 7A.
- FIG. 1 is a sectional view in the axial direction showing a first embodiment of a fixed type constant velocity universal joint according to the present invention.
- the present invention is a Zepper type joint 1 which is a kind of a fixed type constant velocity universal joint for steering. An example when applied to (BJ) is shown.
- the tweeper-type joint 1 includes an outer joint member 10, an inner joint member 20, a plurality of balls 30, a retainer 40, a boot 50, a plunger unit 60, and a receiving member 70.
- a yoke 80 as a connecting member is used as a main component.
- the outer joint member 10 has a cup shape having a cup shape opened at one end, and formed with track grooves l ib extending in the axial direction at circumferentially equidistant positions on the spherical inner surface 11a. It consists of a stem portion 12 extending in the axial direction from the outer diameter surface of the portion 11.
- the stem portion 12 has a fitting portion 12a for fitting the yoke 80 at the tip portion.
- a spline for spline fitting with the yoke 80 is formed on the outer diameter surface of the fitting portion 12a.
- the fitting portion 12a is formed with an engagement hole 12b for passing the retaining member 81 in the radial direction.
- the engagement hole 12b in this embodiment is a through hole.
- the inner joint member 20 is inserted into the cup portion 11 of the outer joint member 10, and an inner ring 21 in which track grooves 21b extending in the axial direction are formed at equal circumferential positions on the spherical outer surface 21a, and an inner ring 21.
- a stem shaft 22 (the stem portion of the inner joint member 20) that is fitted and fixed so as to be able to transmit torque and extends toward the opening side of the cup portion 11 in the axial direction of the inner ring 21.
- the stem shaft 22 has, at one end, a spline shaft portion 22a that is spline-fitted into the spline hole portion 21c of the inner ring 21.
- a circumferential groove 22b is formed in the outer peripheral portion on the tip end side of the spline shaft portion 22a.
- a retaining ring 23 By attaching a retaining ring 23 to the circumferential groove 22b, the stem shaft 22 is prevented from being detached from the inner ring 21.
- a recessed portion 22c On the shaft end surface of the spline shaft portion 22a, a recessed portion 22c (see FIG. 3) for inserting the plunger unit 60, which is a component of the preload means, is formed.
- the plunger unit 60 will be described later.
- the stem shaft 22 has a spline shaft portion 22d that is spline-fitted with the yoke 80 at the other end.
- an engagement hole 22e for inserting the retaining member 81 is formed in the radial direction.
- the engagement hole 22e in this embodiment is a through hole.
- One ball 30 is incorporated in each of a plurality of ball tracks formed between the track groove 1 lb of the outer joint member 10 and the track groove 21b of the inner joint member 20.
- the cage 40 is slidably disposed between the spherical inner surface 11a of the outer joint member 10 and the spherical outer surface 21a of the inner joint member 20, and holds the balls 30 incorporated in each ball track. To do.
- the cage 40 has a spherical outer surface 41 that makes spherical contact with the spherical inner surface 11a of the outer joint member 10, and a spherical inner surface 42 that makes spherical contact with the spherical outer surface 21a of the inner joint member 20, and corresponds to each ball track.
- a pocket 43 for holding the ball 30 is formed at the position.
- the retainer 40 is attached with a receiving member 70 constituting preload means so as to cover the rear opening. The receiving member 70 will be described later.
- the boot 50 is a member that seals the coupling portion 2 of the zipper-type joint 1 and prevents leakage of the lubricant filled in the coupling portion 2.
- the boot 50 has a large-diameter fitting portion 51 that is fitted to the boot fitting portion 11c of the cup portion 11 on one end side, and is fitted to the boot fitting portion 22f of the stem shaft 22 on the other end side.
- a small-diameter fitting portion 52 is formed, and an intermediate portion 53 between the large-diameter fitting portion 51 and the small-diameter fitting portion 52 is formed in a bellows shape.
- the large-diameter fitting portion 51 and the small-diameter fitting portion 52 are fastened and fixed to the cup portion 11 and the stem shaft 22 by boot bands 51a and 52a, respectively.
- This tweeper-type joint 1 has the cage 40 interposed between the outer joint member 10 and the inner joint member 20 as described above, so that the center of the spherical inner surface 11a of the outer joint member 10 and the inner joint The center of the spherical outer surface 21a of the member 20 coincides with the joint center O. In contrast, the center O of the track groove l ib of the outer joint member 10 and the center O of the track groove 21b of the inner joint member 20
- the ball track formed by the pair of track grooves l ib and 21b has a wedge shape that spreads from the back side of the outer joint member 10 toward the opening side.
- the bisector L of the center O force operating angle ⁇ of the ball 30 is normal.
- the above-described tweeper joint 1 includes preloading means including a plunger unit 60 attached to the stem shaft 22 and a receiving member 70 attached to the retainer 40.
- the plunger unit 60 accommodates a ball 63 as a pressing member having a pressing portion 62 at the tip, a compression coil spring 64 as an elastic member, and the ball 63 and the compression coil spring 64.
- An assembly comprising a case 65 as a housing member.
- the compression coil spring 64 is a source of elastic force that presses the ball 63 toward the back side of the cup portion 11 (the ball protruding direction).
- the case 65 is fixed by press-fitting or bonding to a recessed portion 22 c formed at the shaft end of the stem shaft 22.
- the case 65 has a bottomed cylindrical shape, and a locking portion 65a that protrudes toward the inner diameter side is provided at the edge of the opening, thereby preventing the ball 63 from protruding and preventing the ball 63 from being pulled out. Yes.
- an assembly in which the ball 63, the compression coil spring 64, and the case 65 are unitized is obtained.
- the plunger unit 60 is positioned with respect to the shaft end surface of the stem shaft 22! /.
- the receiving member 70 is attached to the rear end of the cup portion of the cage 40.
- the receiving member 70 has a lid shape covering the end opening of the cage 40, and includes a partially spherical surface portion 71 and an attachment portion 72 formed in an annular shape on the outer periphery thereof.
- the inner surface of the spherical portion 71 (the surface facing the stem shaft 22) is a concave spherical surface, and this concave spherical surface functions as a receiving portion 73 that receives the pressing force from the pressing portion 62.
- the attachment portion 72 is fixed to the end portion of the cage 40 by appropriate means such as press fitting or welding.
- the center of the concave spherical inner surface of the spherical surface portion 71 coincides with the joint center O.
- the preload means when the pressing portion 62 of the plunger unit 60 and the receiving portion 73 of the receiving member 70 are brought into contact with each other, the ball 63 retracts and the compression coil spring 64 is compressed. At this time, since the receiving member 70 is arranged so that the center of the concave spherical inner surface coincides with the joint center O, the pressing portion 62 of the plunger unit 60 always abuts on the receiving portion 73 of the receiving member 70. Thus, the elastic pressing force by the plunger unit 60 can be surely applied.
- the inner ring 21 integrated with the stem shaft 22 is axially displaced toward the opening side of the cup portion 11 by the elastic force, and this displacement is arranged in the track grooves l ib and 21b. Since the clearance between the ball 30 and the track grooves l ib and 21b is reduced, the axial clearance of the track grooves l ib and 21b is reduced and the rotation back Lash is prevented.
- the tweeper joint 1 in the present embodiment can be applied to applications that hate rotation backlash, such as a steering device. .
- the tweeper-type joint 1 fastens and fixes shafts (not shown) to the stem portion 12 of the outer joint member 10 and the stem shaft 22 of the inner joint member 20, respectively.
- a yoke 80 for fixing is fixed.
- the yoke 80 fixed to the stem portion 12 of the outer joint member 10 and the yoke 80 fixed to the stem shaft 22 of the inner joint member 20 have the same configuration.
- the yoke 80 has a shaft fitting portion 82 for fitting the shaft on one end side, and the stem portions 12, 22 of the zepper joint 1 on the other end side.
- the shaft fitting portion 82 has a configuration in which an axial slit 84 is formed at one place in the circumferential direction and a pair of tabs 85 extend from both sides of the slit 84.
- the shaft is tightened and fixed by fastening bolts and nuts (not shown) inserted through the holes 86.
- the holes 86 of the pair of tabs 85 one hole can be a counterbore hole and the other hole can be a screw hole, so that the nut can be removed.
- Spline 87 is formed on the inner diameter surface of shaft fitting portion 82 and stem fitting portion 83 so as to be fitted to shaft and stem portions 11 and 21, respectively.
- the yoke 80 is formed in a cylindrical shape having the same diameter over the entire axial direction, and a spline 87 continuous from the shaft fitting portion 82 to the stem fitting portion 83 is formed.
- the stem fitting portion 83 is formed with an engagement hole 88 through which the retaining member 81 is inserted.
- the engagement hole 88 in this embodiment is formed at a position corresponding to the engagement hole 12b of the stem portion 12 and the engagement hole 22e of the stem shaft 22.
- the diameter of the engagement hole 88 is the same as that of the engagement hole 12b of the stem portion 12 and the engagement hole 22e of the stem shaft 22, and is slightly smaller than the outer diameter of the retaining member 81.
- various pins such as a split pin, a taper pin, a parallel pin, a grooved spring pin, a bolt / nut, and a rivet can be used.
- the outer joint member 10 and the yoke 80 include an engagement hole 12b of the stem portion 12 and an engagement hole 8 of the yoke 80. 8 in phase alignment, the fitting portion 12a of the stem portion 12 and the stem fitting portion 83 of the yoke 80 are press-fitted and fitted into the engagement hole 12b of the stem portion 12 and the engagement hole 88 of the yoke 80.
- the retaining member 81 is press-fitted so as to engage with each other.
- the inner joint member 20 and the yoke 80 are fitted to the stem shaft 22 with the spline shaft 22d of the stem shaft 22 and the stem 80 fitted to the stem 80 with the engaging hole 22e of the stem shaft 22 and the engaging hole 88 of the yoke 80 in phase.
- the joint 8 3 is spline-fitted and engaged, and the stem shaft 22 engagement hole 22e
- the retaining member 81 is press-fitted so as to be engaged with the engagement hole 88 of the yoke 80, thereby being integrated.
- torque transmission between the outer joint member 10 and the yoke 80 and between the inner joint member 20 and the yoke 80 is performed via the spline fitting portion, so that rotational torque is applied to the retaining member 81. Since it does not act greatly, these fatigue damages can be suppressed.
- the engagement hole 12b of the outer joint member 10 and the engagement hole 22e of the inner joint member 20 are through holes. These engagement holes 12b and 22e are bottomed holes. It does not matter.
- the outer joint member 10 and the inner joint member 20 can be provided with engagement holes 12b and 22e at a plurality of locations, not limited to one location in the circumferential direction.
- the retaining member 81 is provided at a plurality of locations in the circumferential direction of the outer joint member 10 and the inner joint member 20 and the yoke 80. Can be press-fitted. Thereby, even if the spline fitting portion is not press-fitted, the effect of suppressing the rotation backlash can be enhanced.
- the force hole 86 is formed in each of the pair of tabs 85, and the through hole 86 is provided only in one tab 85, and the other tab 85 is provided with a screw hole ( The nut can be abolished by providing (not shown).
- the inner diameter of the shaft fitting portion 82 and the stem fitting portion 83 of the force yoke 80 that are formed in the same diameter cylindrical shape over the entire area of the yoke 80 is different. It doesn't matter.
- the force 80 in which the yoke 80 is used as the connecting member can be applied to other connecting members other than the yoke 80.
- the fixed type constant velocity universal joint according to the second embodiment differs from the first embodiment in the mounting structure of the boot 50, and is otherwise the same as the first embodiment. The following description will focus on the differences from the first embodiment.
- This tweeper-type joint 1 has a boot fitting portion for fitting the small-diameter fitting portion 52 of the boot 50 to the outer diameter surface of the yoke 80 fitted and fixed to the stem shaft 22 of the inner joint member 20. 89 is provided.
- the boot fitting portion 89 is provided in the yoke 80 on the inner joint member 20 side, the boot fitting portion (22f) of the stem shaft 22 is not necessary. As a result, the stem shaft 22 can be shortened.
- a sealant is applied to the spline shaft portion 22 d of the stem shaft 22 of the inner joint member 20 and the stem fitting portion 83 of the Z or yoke 80.
- a sealant is applied to the spline shaft portion 22 d of the stem shaft 22 of the inner joint member 20 and the stem fitting portion 83 of the Z or yoke 80.
- the fixed type constant velocity universal joint according to the third embodiment is different from the second embodiment in the fitting structure of the yoke 80 with respect to the stem portion 12 of the outer joint member 10 and the stem shaft 22 of the inner joint member 20.
- the other points are the same as in the second embodiment. In the following, the differences from the second embodiment will be mainly described.
- the outer joint member 10 is formed such that the outer diameter in a predetermined range from the fitting portion 12 a of the stem portion 12 to the yoke 80 to the proximal end side is equal to or smaller than the inner diameter of the yoke 80.
- the inner joint member 20 is formed such that the outer diameter in a predetermined range from the spline shaft portion 22d of the stem shaft 22 to the yoke 80 on the proximal end side is equal to or smaller than the inner diameter of the yoke 80.
- the outer diameter in the predetermined range from the fitting portion 12a of the stem portion 12 and the outer diameter in the predetermined range on the proximal end side of the spline shaft portion 22d force of the stem shaft 22 are set as the inner diameter of the yoke 80.
- the same diameter is formed.
- a spline that is continuous with the fitting portion 12a of the stem portion 12 or the spline shaft portion 22d of the stem shaft 22 is formed in the same diameter portion.
- the yoke 80 is formed so that the hollow region between the shaft fitting portion 82 and the stem fitting portion 83 is longer than that of the second embodiment. This hollow region is inserted into the shaft fitting part 82. This is a gap region between the shaft S and the end surface of the stem portion 12 or the stem shaft 22 fitted into the stem fitting portion 83.
- the engagement hole 88 of the yoke 80 is the engagement hole 12b of the stem portion 12 or the engagement hole 22e of the stem shaft 22.
- the yoke 80 is configured to allow the stroke of the outer joint member 10 and the inner joint member 20 so as to be positioned closer to the proximal end side of the stem portion 12 or the stem shaft 22. For example, when an excessive axial force is generated to the extent that the retaining member 81 is damaged, such as in a car crash, the impact of the collision is caused by stroking the yoke 80 against the outer joint member 10 and the inner joint member 20. Can be absorbed.
- the yoke 80 is configured to be strokeable with respect to both the outer joint member 10 and the inner joint member 20, but with respect to either the outer joint member 10 or the inner joint member 20.
- the yoke 80 may be configured to be strokeable.
- the outer diameter in a predetermined range which is the same force as the inner diameter of the yoke 80, may be formed smaller than the inner diameter of the yoke 80. As the area having a smaller diameter than the inner diameter of the yoke 80 increases, the pressure input required for the stroke of the yoke 80 decreases, so that the yoke 80 easily strokes with respect to the outer joint member 10 and the inner joint member 20.
- Splines are formed on the diameter surface, but splines may not be formed on the outer diameter surface within a predetermined range.
- the present invention is not limited to the zepper type joint 1 (BJ) which is a kind of the fixed type constant velocity universal joint for steering, but the under force is the free type. It can also be applied to fixed type constant velocity universal joints used for applications that do not like rotating backlash, such as fixed type constant velocity universal joints (UJ).
- BJ zepper type joint 1
- UJ fixed type constant velocity universal joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
- Sealing Devices (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-272177 | 2004-09-17 | ||
| JP2004272177A JP2006084008A (ja) | 2004-09-17 | 2004-09-17 | 固定型等速自在継手 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006030858A1 true WO2006030858A1 (ja) | 2006-03-23 |
Family
ID=36060108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/017041 Ceased WO2006030858A1 (ja) | 2004-09-17 | 2005-09-15 | 固定型等速自在継手 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006084008A (ja) |
| WO (1) | WO2006030858A1 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5202887B2 (ja) * | 2007-06-29 | 2013-06-05 | Ntn株式会社 | ステアリング用ジョイント |
| JP4984149B2 (ja) * | 2007-08-01 | 2012-07-25 | Ntn株式会社 | 固定型等速自在継手 |
| JP6471478B2 (ja) * | 2014-12-03 | 2019-02-20 | 日本精工株式会社 | トルク伝達ユニット |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133820A (ja) * | 1993-11-11 | 1995-05-23 | Toyota Motor Corp | メカニカルヒューズ装置 |
| JPH08312665A (ja) * | 1995-05-17 | 1996-11-26 | Kiipaa Kk | アダプター付き等速ジョイント用ブーツ |
| JPH0996319A (ja) * | 1995-09-29 | 1997-04-08 | Keeper Co Ltd | 等速ジョイント用フレキシブルブーツ |
| JPH10258646A (ja) * | 1997-03-18 | 1998-09-29 | Unisia Jecs Corp | 衝撃吸収可能な動力伝達装置 |
| JPH10274330A (ja) * | 1997-03-31 | 1998-10-13 | Ntn Corp | 樹脂ブーツ取付構造 |
| JP2003130082A (ja) * | 2001-10-26 | 2003-05-08 | Ntn Corp | 固定型等速自在継手 |
-
2004
- 2004-09-17 JP JP2004272177A patent/JP2006084008A/ja not_active Withdrawn
-
2005
- 2005-09-15 WO PCT/JP2005/017041 patent/WO2006030858A1/ja not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133820A (ja) * | 1993-11-11 | 1995-05-23 | Toyota Motor Corp | メカニカルヒューズ装置 |
| JPH08312665A (ja) * | 1995-05-17 | 1996-11-26 | Kiipaa Kk | アダプター付き等速ジョイント用ブーツ |
| JPH0996319A (ja) * | 1995-09-29 | 1997-04-08 | Keeper Co Ltd | 等速ジョイント用フレキシブルブーツ |
| JPH10258646A (ja) * | 1997-03-18 | 1998-09-29 | Unisia Jecs Corp | 衝撃吸収可能な動力伝達装置 |
| JPH10274330A (ja) * | 1997-03-31 | 1998-10-13 | Ntn Corp | 樹脂ブーツ取付構造 |
| JP2003130082A (ja) * | 2001-10-26 | 2003-05-08 | Ntn Corp | 固定型等速自在継手 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006084008A (ja) | 2006-03-30 |
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