WO2018061611A1 - 摺動式等速自在継手 - Google Patents

摺動式等速自在継手 Download PDF

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Publication number
WO2018061611A1
WO2018061611A1 PCT/JP2017/031548 JP2017031548W WO2018061611A1 WO 2018061611 A1 WO2018061611 A1 WO 2018061611A1 JP 2017031548 W JP2017031548 W JP 2017031548W WO 2018061611 A1 WO2018061611 A1 WO 2018061611A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
constant velocity
universal joint
velocity universal
coil spring
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
Application number
PCT/JP2017/031548
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
茂寛 松尾
康昭 武川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to US16/337,082 priority Critical patent/US11187274B2/en
Publication of WO2018061611A1 publication Critical patent/WO2018061611A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16D3/227—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 telescopic
    • 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
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/56—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic metal lamellae, elastic rods, or the like, e.g. arranged radially or parallel to the axis, the members being shear-loaded collectively by the total load
    • 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
    • F16D2003/22309—Details of grooves
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S464/00—Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
    • Y10S464/904—Homokinetic coupling
    • Y10S464/906—Torque transmitted via radially spaced balls

Definitions

  • the present invention relates to a sliding type constant velocity universal joint used in power transmission systems of automobiles and various industrial machines, and more specifically, at a constant speed even when the drive shaft to be connected and the driven shaft form an angular operating angle.
  • the present invention relates to a sliding type constant velocity universal joint capable of transmitting a rotational motion and relatively moving in an axial direction between a drive shaft and a driven shaft.
  • two power transmission members 102 and 102 are separated at a predetermined interval. It is arranged on a non-collinear line.
  • the two power transmission members 102 and 102 are connected to both ends of a shaft 101 disposed therebetween so as to freely swing through constant velocity universal joints 103 and 103, respectively.
  • Patent Document 1 As a conventional constant velocity universal joint 103, there is a structure shown in FIGS. 11 to 14 (Patent Document 1).
  • FIG. 12 shows a state before or after the constant velocity universal joint 103 is attached to the power transmission member 102.
  • the constant velocity universal joint 103 includes an outer ring 104 as an outer joint member and an inner ring as an inner joint member. 105, a ball 106, and a cage 107.
  • the outer ring 104 is a member in which a large-diameter cylindrical portion 108 and a small-diameter cylindrical portion 109 are integrally formed coaxially.
  • the small-diameter cylindrical portion 109 torques the spline shaft 111 of the power transmission member 102 to be connected to the inner peripheral surface thereof. It has a fitting part inserted from an axial direction so that transmission is possible.
  • a female spline 110 that engages with the male spline 112 provided in the axial direction of the spline shaft 111 is formed on the inner peripheral surface of the fitting portion.
  • the large-diameter cylindrical portion 108 of the outer ring 104 has a storage space 113 in which the inner ring 105, the ball 106, the cage 107, and the like are stored.
  • the inner surface of the outer ring 104 that forms the storage space 113 is axially arranged.
  • a plurality of extending ball grooves 114 are formed at equal intervals in the circumferential direction.
  • the inner ring 105 has an insertion hole into which the shaft 101 is inserted and fitted.
  • the inner peripheral surface of the insertion hole extends in the axial direction to engage with a male spline 115 formed on the outer periphery of the end of the shaft 101.
  • a female spline 116 is formed and connected.
  • a retaining ring 117 that prevents the shaft 101 inserted into the insertion hole of the inner ring 105 from moving backward is attached to an annular retaining ring groove provided on the outer periphery near the tip of the shaft 101.
  • the inner ring 105 has a spherical outer peripheral surface, that is, an outer spherical surface, and a plurality of ball grooves 118 extending in the axial direction are formed on the outer spherical surface at equal intervals in the circumferential direction.
  • the ball groove 114 of the outer ring 104 and the ball groove 118 of the inner ring 105 make a pair, and a ball 106 as one torque transmission element is incorporated in a track formed by each pair of ball grooves 114, 118.
  • Each ball 106 is held by a cage 107.
  • the cage 107 has outer and inner spherical surfaces. The outer spherical surface is in contact with the inner surface of the outer ring 104, and the inner spherical surface is in spherical contact with the outer spherical surface of the inner ring 105.
  • the shaft 101 is integrated with the inner ring 105, the ball 106, and the cage 107 so as to be movable back and forth in the axial direction with respect to the outer ring 104. ing.
  • a plate-shaped receiving member 123 is housed in the storage space 113 of the outer ring 104, and the receiving member 123 is formed in an annular recess 122 formed on a stepped surface connecting the inner surface of the large-diameter cylindrical portion 108 and the inner surface of the small-diameter cylindrical portion 109. It is inserted.
  • a coil spring 121 is provided as a resilient force imparting means for resiliently biasing the shaft 101 in a direction to retract the constant velocity universal joint 103 (outer ring 104). It has been.
  • the constant velocity universal joint 103 is elastically biased toward the counterpart power transmission member 102 by the coil spring 121.
  • one end on the left side of the coil spring 121 is attached to the tip of the shaft 101 protruding from the insertion hole of the inner ring 105, and a cap-shaped contact member 124 is attached to the other end on the right side of the coil spring 121. Yes.
  • a convex spherical portion 126 is formed on the contact member 124, and a concave spherical portion 123 a with which the convex spherical portion 126 contacts is formed on the receiving member 123.
  • the convex spherical portion 126 of the contact member 124 that is elastically biased by the coil spring 121 is in pressure contact with the concave spherical portion 123 a of the receiving member 123.
  • the outer ring 104 is provided with a retaining member 130 that opposes the elastic urging force of the coil spring 121 so that the inner ring 105 does not come out of the outer ring 104.
  • the retaining member 130 is a C-shaped ring that opens in the circumferential direction, and the retaining member 130 is attached to a fitting groove formed on the inner surface of the large-diameter cylindrical portion 108 in the vicinity of the (left side) opening.
  • the two power transmission members 102, 102, the shaft 101, and the constant velocity universal joints 103, 103 are connected as follows.
  • a constant velocity universal joint 103 is attached to the ends (both ends) of the shaft 101.
  • the spline shaft 111 of the power transmission member 102 on one side is slid into the fitting portion of the small diameter cylindrical portion 109 of one constant velocity universal joint 103 and inserted until the tip of the spline shaft 111 contacts the receiving member 123 ( (See FIG. 13).
  • the pressing force in the axial direction A shown in FIG. 14 is applied to the constant velocity universal joint 103 on the non-attached side
  • the pressing force is applied to the opposite constant velocity via the coil spring 121 and the shaft 101 on the non-attached side. It is transmitted to the coil spring 121 of the universal joint 103.
  • the attached coil spring 121 receives a reaction force opposite to the axial direction A from the attached power transmission member 102, and the reaction force is applied to the non-attached coil spring 121 via the shaft 101.
  • an axial compression force from both sides due to the pressing force and reaction force is applied to the coil spring 121 to compress both the coil springs 121, 121, and from the tip of one constant velocity universal joint 103 to the other, etc.
  • the total length up to the tip of the quick universal joint 103 is made shorter than the distance between the power transmission members 102 and 102.
  • a gap S is formed between the tip of the non-attached constant velocity universal joint 103 shown in FIG. 14 and the tip of the power transmission member 102 opposed thereto.
  • the spline shaft 111 of the opposing power transmission member 102 is slid into the fitting portion of the constant velocity universal joint 103 on the non-attached side in FIG. 14 and inserted until the tip of the spline shaft 111 abuts on the receiving member 123. Is completed. 13, the fitting between the constant velocity universal joints 103 and 103 and the power transmission members 102 and 102 is held by the elastic force of the coil spring 121, and the shaft 101 is fixed at both ends. The coil springs 121 and 121 are held at positions where the elastic forces facing each other are balanced.
  • the two power transmission members 102, 102 are not arranged on the same axis, and therefore, in a state where the constant velocity universal joints 103, 103 are attached to the power transmission members 102, 102, the shaft 101 does not transmit power. Inclined with respect to the axis of the member 102. Even in this state, the shaft 101 and the coil spring 121 are disposed on the same axis. Even when the shaft 101 swings relative to the power transmission member 102, the contact member 124 moves smoothly on the concave spherical surface portion 123a of the receiving member 123, so that the shaft 101 and the coil spring 121 are on the same axis. The state in which the elastic force of the coil spring 121 is effectively exhibited at all times is maintained.
  • the constant velocity universal joint 103 of Patent Document 1 includes the coil spring 121 between the end portion of the shaft 101 and the receiving member 123 disposed in the outer ring 104.
  • the member 123 or the like the length between the constant velocity universal joints 103 at both ends is configured to be slidable and extendable, and can be easily attached to the two power transmission members 102 and 102 that are separated by a predetermined distance. It is made to be able to.
  • Patent Document 2 As shown in FIGS. 15 and 16, another example of the coil spring 121 incorporated in the end portion of the shaft 101 and the outer ring 104 in the sliding type constant velocity universal joint 103 is shown. Is disclosed.
  • a shallow portion 122 formed in a stepped surface connecting the inner peripheral surface of the large-diameter cylindrical portion 108 and the inner peripheral surface of the small-diameter cylindrical portion 109 is shallow.
  • a dish-shaped seal plate 223 is fitted, and one end of a coil spring 121 is attached to the seal plate 223.
  • a shallow dish-shaped bearing member 224 is attached to the other end of the coil spring 121.
  • the bearing member 224 has a shape curved in a convex spherical shape on the seal plate 223 side.
  • a spherical concave surface portion 225 is provided on the shaft 101 side surface of the bearing member 224 formed in this way.
  • the seal plate 223 and the bearing member 224 have short cylindrical edges 223a and 224a, respectively.
  • the end surface or outer diameter portion of the coil spring 121 is formed by using a plate-shaped receiving member 123, a shallow dish-shaped seal plate 223, or the like. This is a structure in which a shallow dish-shaped bearing member 224 is engaged.
  • the forward / backward movement performance may be hindered, or the coil spring 121 may be easily buckled or deformed. 223 or the bearing member 224 may be adversely affected.
  • the length of the sliding type constant velocity universal joint 103 at both ends cannot be elastically elastically biased.
  • the constant velocity universal joint 103, the spline shaft 111 of the outer ring 104 and the drive shaft (or driven shaft) is disengaged, the end surface of the shaft 101 interferes with the bottom of the outer ring 104, the end plate or the ball 106, and the retaining member 130. May impair the intrinsic functionality of the.
  • the present invention can stably insert the coil spring at a predetermined position, and also can understand the assembled state of the coil spring from the outside, so that the buckling / deformation of the compression coil spring can be alleviated and stable sliding can be achieved.
  • a sliding type constant velocity universal joint having dynamic characteristics is to be obtained.
  • the present invention includes an outer joint member coupled to a power transmission member, and an inner joint member coupled to an end portion of the shaft, and includes the outer joint member and the inner joint member.
  • a sliding type constant velocity universal joint configured to allow torque transmission while allowing angular displacement and axial displacement between the tip end of the shaft connected to the inner joint member and the outer side in the outer joint member
  • An elastic member that expands and contracts in the axial direction is provided between the joint member, a shaft convex portion that supports an inner diameter portion of the end of the elastic member on the shaft side is provided at the tip of the shaft, and the outer joint member side of the elastic member
  • a receiving member fitted to the inner diameter portion of the elastic member is attached to the end portion of the elastic member, and an end plate is press-fitted to the inner surface of the outer joint member, and the receiving member is pressed against the end plate on the inner surface of the outer joint member.
  • the metal of the receiving member and the end plate can be metal or resin.
  • the outer diameter surface of the shaft convex portion that supports the inner diameter portion of the elastic member and the outer diameter surface of the receiving member that fits to the inner diameter portion of the elastic member are combined with a cylindrical portion and a tapered portion to provide elasticity. It is possible to improve the assembling property to the inner diameter part of the member.
  • a spherical convex surface portion is formed on the end plate side surface of the receiving member, and a spherical concave surface portion that contacts and guides the spherical convex surface portion of the receiving member is provided on the end plate, and the radius of curvature of the spherical convex surface portion is the curvature of the spherical concave portion.
  • the contact area between the spherical convex surface portion of the receiving member and the spherical concave surface portion of the end plate can be reduced, and smooth sliding motion can be performed.
  • both ends of the coil spring are supported by the outer diameter surface of the shaft convex portion and the outer diameter surface of the convex portion of the receiving member, so that the coil spring is stably interposed at a predetermined position. Since the assembly state can be confirmed from the appearance, the coil spring does not fall off the shaft convex portion or the receiving member, and the length of the sliding type constant velocity universal joint is elastically extended. Can be energized.
  • the present invention relates to a power transmission system used in a vehicle such as a passenger car or an agricultural tractor, for example, a sliding constant velocity universal joint 3, 3 used in a propeller shaft, one of which is a drive shaft.
  • a sliding constant velocity universal joint 3, 3 used in a propeller shaft, one of which is a drive shaft.
  • the other end of the shaft 1 arranged between the two power transmission members 2 and 2 whose other shafts are driven shafts is connected to the power transmission members 2 and 2 so as to swing freely.
  • the sliding type constant velocity universal joint 3 of the present invention includes an outer ring 4, an inner ring 5, a ball 6 as a torque transmission member, and a cage 7.
  • the outer ring 4 as an outer joint member is a member in which a large diameter cylindrical portion 8 and a small diameter cylindrical portion 9 are integrally formed on the same axis.
  • a female spline groove 10 extending in the axial direction is formed on the inner peripheral surface of the small-diameter cylindrical portion 9, and a male spline groove 12 that engages with the female spline groove 10 is formed on the outer peripheral surface of the spline shaft 11 of the power transmission member 2. Is formed. That is, the power transmission member 2 and the outer ring 4 are configured to be detachable by sliding in the axial direction.
  • the large-diameter cylindrical portion 8 of the outer ring 4 has a storage space 13 in which the inner ring 5, the ball 6, the cage 7, and the like can be stored, and the inner peripheral surface of the large-diameter cylindrical portion 8 has an axial direction.
  • a plurality of ball grooves 14 extending in the circumferential direction are formed at equal intervals in the circumferential direction.
  • a boot 20 made of rubber or the like is attached between the open end of the large diameter cylindrical portion 8 and the shaft 1 by boot bands 20a and 20b.
  • the inner ring 5 as an inner joint member is formed with a female spline groove 16 extending in the axial direction to engage with a male spline groove 15 formed on the outer peripheral surface of the end portion of the shaft 1 on the inner peripheral surface thereof.
  • a retaining ring 17 for preventing the shaft 1 from coming out of the inner ring 5 is mounted in the vicinity of the tip of the shaft 1 inserted inside the inner ring 5.
  • a plurality of ball grooves 18 extending in the axial direction are formed on the outer circumferential surface of the inner ring 5 at equal intervals in the circumferential direction.
  • the ball groove 18 of the inner ring 5 and the ball groove 14 of the outer ring 4 are opposed to each other. Arranged. In the tracks formed by the opposing ball grooves 14 and 18 of the inner and outer rings 4 and 5, one ball 6 is incorporated so as to roll freely.
  • the cage 7 has a plurality of pockets 19 at equal intervals in the circumferential direction.
  • the cage 7 is interposed between the outer ring 4 and the inner ring 5 and accommodates one ball 6 in each pocket 19.
  • the inner peripheral surface of the cage 7 and the outer peripheral surface of the inner ring 5 are in spherical contact with each other, so that the shaft 1 can take an operating angle (angular displacement).
  • the ball 6 can roll along the ball groove 14 of the outer ring 4, the ball 6, the shaft 1, the inner ring 5, and the cage 7 move together in the axial direction with respect to the outer ring 4. (Can be displaced in the axial direction). That is, the sliding type constant velocity universal joint 3 is configured to transmit torque between the outer ring 4 and the inner ring 5 while allowing angular displacement and axial displacement.
  • a retaining ring 30 such as a circlip is attached to the inner peripheral edge of the open end of the outer ring 4, and the retaining ring 30 and the ball 6 interfere with each other so that the inner ring 5, the shaft 1, and the like are detached from the outer ring 4. Is preventing.
  • an elastic member constituted by a coil spring 21 that can be expanded and contracted in the axial direction is housed.
  • a shallow dish-shaped end plate 23 is fitted in a recess 22 formed in a stepped surface connecting the inner peripheral surface of the large-diameter cylindrical portion 8 of the outer ring 4 and the inner peripheral surface of the small-diameter cylindrical portion 9.
  • the end plate 23 includes a spherical concave surface portion 23a that faces one end surface of the coil spring 21, and a short cylindrical edge portion 23b that fits into the concave portion 22 (see FIG. 3). ).
  • the outer diameter dimension ⁇ D5 of the short cylindrical edge 23b is formed larger than the inner diameter dimension ⁇ D6 of the recess 22, and the end plate 23 is press-fitted into the recess 22 of the outer ring 4 (FIGS. 9 and 9). 10).
  • the receiving member 24 fitted to the inner diameter portion of the coil spring 21 is attached to the end of the coil spring 21 on the end plate 23 side (see FIG. 1).
  • the receiving member 24 includes a convex portion 25 fitted to the inner diameter portion of the coil spring 21 and a flange portion 26 that comes into contact with the end surface of the coil spring 21.
  • a spherical convex surface portion 26a that is brought into contact with the spherical concave surface portion 23a of the end plate 23 is provided on the outer surface (FIG. 8).
  • the spherical convex surface portion 26a of the receiving member 24 can further reduce the sliding resistance between the receiving member 24 and the end plate 23 by forming a smooth end surface portion 26b at the center.
  • a shaft convex portion 27 is provided at the tip of the shaft 1 to be inserted and supported in the inner diameter portion of the other end portion of the coil spring 21 (FIG. 6).
  • the shaft convex part 27 of the shaft 1 is inserted in the internal diameter part of one end, and the convex part 25 of the receiving member 24 is inserted in the internal diameter part of the other end (refer FIG. 4).
  • the convex portion 25 of the receiving member 24 includes a smooth cylindrical portion 25a of ⁇ D1 having a tightening margin with respect to the inner diameter dimension ⁇ d1 (see FIG. 7) of the coil spring 21, and a front end side from the smooth cylindrical portion 25a. And a taper portion 25b having an angle ⁇ toward.
  • the outer diameter surface of the shaft convex portion 27 has a smooth cylindrical portion 27a of ⁇ D1 having a tightening margin with respect to the inner diameter dimension ⁇ d1 (see FIG. 7) of the coil spring 21, and the tip from the smooth cylindrical portion 27a. And a tapered portion 27b having an angle ⁇ toward the side.
  • the shaft 1 is provided with a receiving surface portion 28 having an outer diameter ⁇ D2 that is large enough to receive the end surface of the coil spring 21 having an outer diameter ⁇ d2.
  • the diameter ⁇ D1 of the smooth cylindrical portion 27a of the shaft convex portion 27 and the diameter ⁇ D1 of the smooth cylindrical portion 25a of the convex portion 25 of the receiving member 24 are set to a tightening margin with respect to the inner diameter dimension ⁇ d1 of the coil spring 21, that is, ⁇ d1 ⁇ D1.
  • the coil spring 21 is assembled to the smooth cylindrical portion 27a of the shaft convex portion 27 and the smooth cylindrical portion 25a of the convex portion 25 of the receiving member 24 by assembling the coil spring 21, the shaft convex portion 27, and the convex portion 25 of the receiving member 24. It is possible to stably insert at a predetermined position, and the assembled state can be seen from the appearance.
  • the outer diameter dimension ⁇ D4 of the flange portion 26 of the receiving member 24 is formed to have a size for receiving the end face of the coil spring 21 having the outer diameter dimension ⁇ d2.
  • the coil spring 21 By supporting both ends of the coil spring 21 with the outer diameter surface of the shaft convex portion 27 and the outer diameter surface of the convex portion 25 of the receiving member 24, the coil spring 21 can be stably interposed at a predetermined position.
  • the assembly state can also be seen from the appearance. Therefore, the coil spring 21 does not fall off the shaft convex portion 27 or the receiving member 24, and the length of the sliding type constant velocity universal joint 3 can be elastically biased.
  • the material of the receiving member 24 and the end plate 23 is metal or resin. Both the receiving member 24 and the end plate 23 may be made of metal or resin, or one may be made of metal and the other may be made of resin.
  • POM polyacetal
  • PA nylon
  • carbon steel for machine structure (S53C or the like) or chrome molybdenum steel (SCM420 or the like) can be applied, and induction hardening tempering or carburizing quenching and tempering treatment is performed as a heat treatment.
  • the spherical convex surface portion 26 a of the receiving member 24 and the spherical concave surface portion 23 a of the end plate 23 are in pressure contact with each other due to the elastic biasing force of the coil spring 21. Further, since the radius of curvature of the spherical convex surface portion 26a is set smaller than the radius of curvature of the spherical concave surface portion 23a, the spherical convex surface portion 26a and the spherical concave surface portion 23a are in line contact with each other in an annular shape.
  • the coil spring 21 is housed in the outer ring 4 in a compressed state. That is, the coil spring 21 is in a state in which it can apply a resilient force to both sides in the axial direction over the entire movable range of the ball 6 in the axial direction, in other words, in the entire sliding stroke range of the sliding type constant velocity universal joint 3. .
  • the portion 26 a slides on the spherical concave surface portion 23 a of the end plate 23 of the outer ring 4.
  • the coil spring 21 is disposed parallel to the axial direction and is held in a stable posture.
  • the inner ring 5, the ball 6, and the cage 7 are assembled, and the inner ring 5 is stopped at the tip of the shaft 1 with the retaining ring 17, and the end plate 23 is attached to the recess 22 of the outer ring 4. Mating.
  • the small-diameter cylindrical portion 9 of one sliding type constant velocity universal joint 3 is externally fitted by sliding in the axial direction on the spline shaft 11 of the power transmission member 2 on the other side (see FIG. 2).
  • the axial length from the tip of one sliding type constant velocity universal joint 3 to the tip of the other sliding type constant velocity universal joint 3 is larger than the distance between the power transmission member 2 and the two. long. Therefore, as shown in FIG. 5, the axial force A is applied to the other sliding type constant velocity universal joint 3, and the coil springs 21 in both sliding type constant velocity universal joints 3 are compressed.
  • the axial length between the tips of the sliding type constant velocity universal joints 3 and 3 is set to the distance between the power transmission members 2 and 2. It can be shorter than the dimensions. Then, the small-diameter cylindrical portion 9 of the other sliding type constant velocity universal joint 3 is slid in the axial direction on the spline shaft 11 of the counterpart power transmission member 2 to complete the mounting operation.
  • each sliding type constant velocity universal joint 3, 3 may be fitted on the power transmission members 2 and 2 sequentially or simultaneously.
  • the method of detaching the slidable constant velocity universal joint 3 which has been attached from the power transmission member 2 may be performed in the reverse procedure to the above-described procedure at the time of attachment, and thus description thereof is omitted.
  • the sliding type constant velocity universal joint of the present invention may be connected to only one end, not both ends of the shaft.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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PCT/JP2017/031548 2016-09-28 2017-09-01 摺動式等速自在継手 Ceased WO2018061611A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/337,082 US11187274B2 (en) 2016-09-28 2017-09-01 Slidable constant speed universal joint

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-189106 2016-09-28
JP2016189106A JP6996839B2 (ja) 2016-09-28 2016-09-28 摺動式等速自在継手

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WO2018061611A1 true WO2018061611A1 (ja) 2018-04-05

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WO (1) WO2018061611A1 (https=)

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CN112434389B (zh) * 2020-11-23 2024-09-10 上海纳铁福传动系统有限公司 汽车传动轴及其弯曲振动频率优化方法
CN113719549B (zh) * 2021-08-04 2022-06-10 东风汽车集团股份有限公司 一种具有滑移补偿的驱动轴系统

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