WO2008018290A1 - Joint universel à vitesse constante fixe - Google Patents

Joint universel à vitesse constante fixe Download PDF

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Publication number
WO2008018290A1
WO2008018290A1 PCT/JP2007/064470 JP2007064470W WO2008018290A1 WO 2008018290 A1 WO2008018290 A1 WO 2008018290A1 JP 2007064470 W JP2007064470 W JP 2007064470W WO 2008018290 A1 WO2008018290 A1 WO 2008018290A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball
joint
joint member
center
constant velocity
Prior art date
Application number
PCT/JP2007/064470
Other languages
English (en)
Japanese (ja)
Inventor
Takeyoshi Konomoto
Tetsurou Kadota
Kazuhiko Yoshida
Original Assignee
Ntn Corporation
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
Priority claimed from JP2006214682A external-priority patent/JP2008039077A/ja
Priority claimed from JP2006220204A external-priority patent/JP2008045618A/ja
Priority claimed from JP2006233746A external-priority patent/JP2008057613A/ja
Application filed by Ntn Corporation filed Critical Ntn Corporation
Publication of WO2008018290A1 publication Critical patent/WO2008018290A1/fr

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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
    • F16D3/224—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
    • F16D3/2245—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 where the groove centres are offset from the joint centre
    • 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
    • F16D3/2237—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 where the grooves are composed of radii and adjoining straight lines, i.e. undercut free [UF] type joints

Definitions

  • the fixed type constant velocity universal joint of the present invention connects a drive-side rotating shaft and a driven-side rotating shaft so that torque can be transmitted at a constant angular velocity even when both shafts form an angle. .
  • This fixed type constant velocity universal joint can only be angularly displaced without plunging, and is used for power transmission of various industrial machines including automobiles.
  • a fixed type constant velocity universal joint is generally used for an axle connecting portion of a drive shaft of an automobile or a bent shaft connecting portion of a steering shaft.
  • a Zepper type constant velocity universal joint is known.
  • the zebra type constant velocity universal joint invented by Zeppa initially has the same arc centered on the joint center, both of the ball center locus of the guide groove of the outer joint member and the ball center locus force of the guide groove of the inner joint member. (See Patent Document 1).
  • Double offset type constant velocity universal joints have the same radius around the center of the ball center of the two guide grooves of the outer joint member and the inner joint member, which are separated by an equal distance from the joint center in the opposite direction of the joint axial direction. It is a circle.
  • undercut-free type (hereinafter referred to as UJ type! /, U) constant velocity universal joints, which are another type of fixed type constant velocity universal joints, are higher than Zepper type constant velocity universal joints.
  • UJ type! /, U undercut-free type
  • the opening side portion of the outer joint member is a straight line parallel to the joint axis from the cross section perpendicular to the axis passing through the joint center (see Patent Document 3).
  • the limit operating angle was about 52 °.
  • Fig. 10 shows a specific example of a double offset type constant velocity universal joint.
  • This constant velocity universal joint has an outer joint member 1 having one end opened and a plurality of (for example, six) curved guide grooves lb formed on the spherical inner peripheral surface la in the axial direction, and a spherical outer periphery.
  • Inner joint member 2 in which a plurality of (for example, six) curved guide grooves 2b are formed in the surface 2a in the axial direction, and a shaft inserted into one end of the inner joint member 2 (spline or selection) hole 2c.
  • the outer peripheral spherical surface 5 a of the cage 5 is in sliding contact with the inner peripheral spherical surface 1 a of the outer joint member 1, and the inner peripheral spherical surface 5 b of the retainer 5 is in sliding contact with the outer peripheral spherical surface 2 a of the inner joint member 2.
  • the center of curvature of the inner peripheral spherical surface la of the outer joint member 1 and the center of curvature of the outer peripheral spherical surface 2a of the inner joint member 2 both coincide with the joint center O.
  • the center of curvature O of the guide groove lb (hereinafter referred to as the outer ring guide groove lb) of the outer joint member 1 and the center of curvature O of the guide groove 2b (hereinafter referred to as the inner ring guide groove 2b) of the inner joint member 2 are the center O of the joint.
  • the center o is on the joint opening side and the center o is on the joint.
  • Patent Document 1 US Pat. No. 1,665,280
  • Patent Document 2 US Patent No. 2046584
  • Patent Document 3 JP-A 53-65547
  • the center of curvature O of the outer ring guide groove lb is closer to the joint opening side than the center of curvature O of the inner ring guide groove 2b as described above.
  • the center of curvature O, O of the inner ring guide groove 2b is offset in the axial direction.
  • the rack 3 has a wedge shape opened toward the opening side of the outer joint member 1. For this reason, When a load is applied to the joint, a force F (indicated by an arrow in FIG. 10) is applied to the ball 4 to push the cage 5 toward the opening side of the outer joint member 1. At this time, the joint opening side region D ′ of the inner peripheral spherical surface la of the outer joint member 1 holds the cage 5 against the force F, so that the cage 5 is prevented from coming off from the outer joint member 1. .
  • the limit operating angle of the constant velocity universal joint is limited by the interference between the shaft 6 and the open end 1 c of the outer joint member 1. That is, in order to increase the limit operating angle, the overhang length of the open end lc of the outer joint member 1 may be shortened, that is, the distance L between the open end lc and the joint center O may be shortened.
  • the joint opening side region D ′ where the inner circumferential spherical surface la of the outer joint member 1 holds the cage 5 against the force F is increased. Reduced. For this reason, depending on the gap width between the inner peripheral spherical surface 1a of the outer joint member 1 and the outer peripheral spherical surface of the cage 5, the outer joint member 1 cannot hold the cage 5, May cause trouble.
  • the joint back side portion of the guide groove of the inner joint member is formed into an arc having the joint center as the center of curvature.
  • the outer side window opening dimension of the cage window that accommodates the ball is made smaller than the diameter of the ball.
  • the outer joint member can be moved along with the rotation or bending of the joint.
  • the ball that has come out of the guide groove is returned to the guide groove again.
  • the ball and the open end of the outer joint member may interfere with each other, and the smooth operation of the constant velocity universal joint may be hindered.
  • a first object of the present invention is to provide a fixed type constant velocity universal joint that can realize a higher operating angle than the conventional one by allowing it to protrude from the guide groove of the outer joint member without dropping the ball. This is to prevent the interference between the outer joint member and the outer joint member and to operate the constant velocity universal joint smoothly.
  • a second object of the present invention is to securely hold a cage inside an outer joint member in a fixed type constant velocity self-joint capable of realizing a high operating angle. Means for solving the problem
  • the invention of claim 1 is characterized in that an outer joint member having one end opened and formed with a plurality of guide grooves extending in the axial direction on a spherical inner peripheral surface, and a spherical outer peripheral surface
  • An inner joint member formed with a plurality of guide grooves extending in the axial direction, a plurality of ball tracks formed by cooperation of the guide groove of the outer joint member and the guide groove of the inner joint member, and each ball track
  • the joint opening side end of the guide groove of the outer joint member is radially outward. It is characterized by an open guide part.
  • the joint opening side end portion of the guide groove of the outer joint member is a guide portion that opens radially outward, the balls that have come out from the guide groove of the outer joint member can be smoothly passed by this guide portion. It can be returned to the guide groove. For this reason, the interference between the ball and the outer joint member is avoided, and the joint can be smoothly operated even when a large operating angle is taken.
  • the invention of claim 2 is characterized in that, in the invention of claim 1, the ball track has a wedge shape in which the radial interval between the opposing guide grooves is narrowed toward the opening side of the outer joint member.
  • the ball track has a wedge shape narrowed toward the opening side of the outer joint member, there is a high possibility that the ball and the outer joint member interfere with each other. It is effective to provide an id part.
  • a load is applied to the joint, a force is applied to the ball to push the cage toward the inner side of the joint, and the cage is held in the inner area of the inner spherical surface of the outer joint member against this force. .
  • the back region of the inner spherical surface of this outer joint member is Even if the distance between the open end of the outer joint member and the joint center is shortened in order to increase the operating angle of the joint, it will not be reduced. Therefore, even when the operating angle of the joint is increased, the cage can be securely held inside the outer joint member.
  • the invention of claim 3 is the invention of claim 1, wherein the region including the end portion on the joint back side of the guide groove of the inner joint member is an arc centered on the joint center, and the ball
  • the invention of claim 4 is characterized in that, in the invention of claim 2, the guide portion has a curved shape having a center of curvature on the opening outer diameter side of the outer joint member.
  • the invention of claim 5 is characterized in that, in the invention of claim 2, the guide portion has a linear shape whose inner diameter continuously increases toward the opening of the outer joint member.
  • the invention of claim 6 is the invention of claim 1, wherein the ball center locus in the guide groove of the outer joint member and the inner joint member is equally offset to the opposite side in the joint axial direction across the joint center, and The center of curvature of the main arc of the ball center trajectory in the guide groove of the joint member is arranged on the deeper side of the joint than the center of curvature of the main arc of the ball center trajectory in the guide groove of the inner joint member.
  • the invention of claim 7 is the invention of claim 6, wherein the ball center locus in the guide groove of the inner joint member is extended from the joint back side end portion of the main arc, and the joint center is defined as the center of curvature.
  • the outer peripheral side window opening size of the retainer window that accommodates the ball can be made smaller than the diameter of the ball so that it can protrude from the guide groove of the outer joint member without dropping the ball. It is characterized by that.
  • the overhang length of the opening end portion of the outer joint member (distance U in Fig. 10 can be shortened and the operating angle of the joint can be increased).
  • the invention of claim 8 is the same as that of claim 7, and the curvature center of the main arc of the ball center locus in the guide groove of the outer joint member and the inner joint member is It is characterized by being offset equally in the direction of increasing the diameter.
  • the groove depth of the guide groove of the outer joint member becomes deeper, it is possible to more reliably prevent the ball from climbing up due to torque load. Further, the length of the guide groove of the outer joint member can be extended by the offset. Furthermore, the surface pressure received from the ball by the guide groove of the inner joint member can be reduced by the offset.
  • the invention of claim 9 is the same as that of the invention of claim 7, and the curvature centers of the main arcs of the ball center locus in the guide grooves of the outer joint member and the inner joint member are It is characterized by being equally offset in the direction of decreasing diameter.
  • the groove depth of the guide groove of the inner joint member is increased, so that it is possible to more reliably prevent the ball from climbing up due to torque load. Further, the surface pressure received from the ball by the guide groove of the outer joint member can be reduced by the offset.
  • Fig. 1A and Fig. IB show the fixed type (Zetsuba type) constant velocity universal joint of the present invention.
  • Fig. 1A shows an operating angle of 0 ° and Fig. 1B shows. Indicates the limit operating angle (60 °).
  • the components of this constant velocity universal joint are basically the same as those of the constant velocity universal joint shown in FIG. 10, and a plurality of (for example, eight) curved guide grooves lb are formed in the axial direction on the inner circumferential spherical surface la.
  • the constant velocity universal joint is characterized by the ball track 3 formed by the outer ring guide groove lb and the inner ring guide groove 2b in cooperation with each other. That is, as shown in FIG. 1A, the ball track 3 has a wedge shape in which the radial intervals between the opposing guide grooves lb and 2b are narrowed toward the opening side of the outer joint member.
  • the detailed shape of the ball track 3 includes the ball center locus C1 of the outer ring guide groove lb (hereinafter referred to as the outer ring ball center locus C1) and the ball center locus C2 of the inner ring guide groove 2b (hereinafter referred to as the inner ring ball center). This will be described using the locus C2.
  • the outer ring ball center locus C1 is composed of a main arc having a radius R1 with the point O as the center.
  • the inner race Bonore center trajectory C2 is composed of two trajectories with different centers of curvature, that is, a main arc C2a (range indicated by arrow A) of radius R2 centered on point O, and a main arc C2a. Fittings
  • the center of curvature O of the outer ring ball center locus C1 is arranged on the back side of the outer joint member 1 relative to the center of curvature O of the main arc C2a of the inner ring ball center locus C2, and these centers of curvature O
  • the ball track 3 has a wedge shape in which the radial intervals between the opposing guide grooves lb and 2b are narrowed toward the joint opening side.
  • Outer ring ball center track C1 and inner ring ball center track The main arc C2a of the trace C2 intersects with each other in a cross section passing through the joint center O and perpendicular to the joint axis, and is mirror-image-symmetric in the axial direction with the joint center O in between.
  • a secondary arc C2 b with a radius R3 centered on the joint center O is connected to the joint back end of the main arc C2a of the inner ring ball center locus C2.
  • the number of guide grooves is not limited to 8, but may increase to 9, 10, 11, 12,.
  • FIGS. 3A and 3B show only the outer ring guide groove lb and the groove bottom of the guide portion Id in FIGS. 1A and 1B.
  • the guide portion Id is formed in an arc shape having a radius R4 with the point O on the outer diameter side of the opening of the outer joint member 1 as the center of curvature, and is formed into an outer ring guide groove lb.
  • the size of the opening angle ⁇ of the guide portion Id is desirably set to 5 ° to 45 °, preferably 10 ° to 20 °.
  • the shape of the guide portion Id is not limited to the above. As shown in FIG. 3B, the linear shape inclined radially outward by an angle ⁇ from the joint axial direction of the outer joint member 1, that is, the inner diameter of the guide portion Id continuously increases toward the opening side of the outer joint member 1. It may be linear. In FIG. 3B, a force that forms a corner at the boundary between the outer ring guide groove lb and the guide portion Id.
  • the above-described ball track 3 has a wedge-shaped force in which the radial spacing between the opposing guide grooves lb and 2b is narrowed toward the joint opening side, as shown in FIGS. 4A and 4B, toward the joint opening side. It can also be an open wedge shape. That is, the guide groove 2b of the inner joint member 2 in the figure has a joint of the first arc part 2bl and the first arc part 2M including the joint center O and the end of the guide groove 2b on the back side of the joint.
  • the second arc portion 2b2 is provided on the opening side and has a center of curvature at a point O offset from the joint center O in the axial direction to the back of the joint.
  • the guide groove lb of the outer joint member 1 is formed in an arc shape with a center of curvature at a point O offset in the axial direction from the joint center O to the joint opening side.
  • the center of curvature O of the second arc 2b2 is offset from the joint center O by the same distance on the opposite side in the axial direction, and is equidistant from the joint axis in the direction of increasing the radius of curvature. Only offset.
  • the ball track formed by the cooperation of the outer ring guide groove lb and the corresponding inner ring guide groove 2b has a wedge shape which opens toward the opening side of the joint.
  • the cage 5 is formed of an annular member as shown in FIGS. 1A and IB, and its outer peripheral surface is an outer peripheral spherical surface 5a that is in sliding contact with the inner peripheral spherical surface la of the outer joint member 1, and the inner peripheral surface is The inner peripheral spherical surface 5b is in sliding contact with the outer peripheral spherical surface 2a of the inner joint member 2.
  • the centers of curvature of the outer peripheral spherical surface 5a and the inner peripheral spherical surface 5b of the cage 5 are both joint centers O.
  • the same number of windows 5c as balls 4 are formed through the peripheral wall of the cage 5 by grinding or milling.
  • the window 5c has a rectangular shape, for example, and is formed at equal intervals in the circumferential direction of the cage 5.
  • the inner diameter surface of the cage 5 on the joint opening side is provided with a cylindrical surface 5d having a constant inner diameter over a predetermined width, and a retaining ring 7 (ceramic ring 5d is formed in a groove portion 5dl formed in the cylindrical surface 5d. Clip) is engaged.
  • the guide ring 8 is fitted into a narrow annular wedge space formed inside the retaining ring 7 and between the cage 5 and the window 5c.
  • the guide ring 8 has an inner peripheral surface fitted to the spherical outer peripheral surface 2 a of the inner joint member 2 and an outer peripheral surface fitted to the inner peripheral cylindrical surface 5 d of the cage 5. Further, the outer end of the guide ring 8 comes into contact with the inner surface of the retaining ring 7. A certain gap is secured between the inner end of the guide ring 8 and the ball 4.
  • the ball guide surface of the window 5c of the cage 5 has a narrow outer diameter side as shown in FIG.
  • the window 5c of the cage 5 has an outer peripheral side window opening dimension smaller than the diameter of the ball 4.
  • the inner diameter side of the ball guide surface facing the axial direction of the cage 5 is a force S that is a straight line parallel to each other with a space equal to the ball diameter 5c l
  • the outer diameter side of the ball guide surface is The taper is tapered so that the gap is slightly narrower than the ball diameter.
  • This tapered portion may be formed by an inclined straight line, but in order to reduce the contact pressure with the ball, it is preferable to have a concave arc shape 5c2 that matches the outer peripheral curvature of the ball.
  • the constant velocity universal joint according to the present invention is configured as described above, and when the outer joint member 1 and the inner joint member 2 are at the operating angle of 0 ° in Fig. 1A, the ball 4 has the outer ring guide groove lb and the inner ring.
  • the effect of the offset center of curvature O, O of the second arc 2b2 of the guide groove 2b is
  • the distance L between the opening end lc of the outer joint member 1 and the joint center O is compared by allowing the ball 4 to be protruded from the inner groove lb of the outer joint member 1 without dropping off the ball 4.
  • the operating angle of the joint is increased.
  • the inner side spherical surface D of the outer peripheral surface la of the outer joint member 1 holding the retainer 5 is reduced. As a result, the cage 5 can be held securely.
  • the outer ring guide groove 1 is accompanied with the rotation or bending of the joint.
  • the ball 4 that has come out from b is returned to the outer ring guide groove lb again.
  • the smooth operation of the constant velocity universal joint may be hindered.
  • the ball track 3 has a wedge shape closed toward the joint opening side, there is a high possibility that the ball 4 and the opening end of the outer joint member 1 interfere with each other.
  • the ball 4 can be smoothly accommodated in the outer ring guide groove lb by the guide portion Id provided at the opening end of the outer ring guide groove lb (see FIG. 7). Therefore, interference between the ball 4 and the outer joint member 1 is avoided, and the joint can be operated smoothly.
  • this offset can extend the length of the outer ring guide groove lb. Furthermore, this offset reduces the surface pressure that the inner ring guide groove 2b receives from the ball 4 with a force S.
  • the joint can be smoothly operated even in the fixed type constant velocity universal joint having the wedge-shaped ball track 3 opened toward the joint opening side in FIGS. 4A and 4B.
  • the ball 4 protruding outward from the guide groove lb of the outer joint member 1 is returned to the guide groove lb as the joint rotates or bends, it is provided at the open end of the outer ring guide groove lb.
  • the guide part Id allows the ball 4 to be smoothly accommodated in the outer ring guide groove lb. Therefore, the interference between the ball 4 and the outer joint member 1 is avoided, and the force S is used to smoothly operate the joint.
  • the present invention is not limited to the above-described embodiment.
  • the force is equally offset from the joint center o in the direction of increasing, but is not limited to this.
  • the centers of curvature O and O may be arranged on the joint central axis. Or you can see it in Figure 9.
  • each center of curvature ⁇ , o is equally offset from the joint center o in the direction of decreasing the radius of curvature.
  • the force S in which the guide groove lb of the outer joint member 1 and the inner groove 2b of the inner joint member 2 are both formed in an arc shape, and these are partially straightened. It may be formed. Alternatively, they may all be formed linearly. However, when all the guide grooves are linear, if the opposing guide grooves are parallel with the operating angle being 0 °, the cage can rotate and the position of the ball relative to the guide grooves cannot be determined. For this reason, it is necessary to form at least one pair of opposing guide grooves in a straight line that is not parallel.
  • FIG. 1A is a longitudinal sectional view showing a state of a bending angle of 0 ° of a fixed type constant velocity universal joint according to the present invention.
  • FIG. 1B is a longitudinal sectional view showing a state of a maximum bending angle (60 °) of the fixed type constant velocity universal joint according to the present invention.
  • FIG. 2A is a longitudinal sectional view of an outer joint member.
  • FIG. 2B is a longitudinal sectional view of the inner joint member.
  • FIG. 3A is an enlarged view of the guide groove lb of the outer joint member 1.
  • FIG. 3B is an enlarged view showing another example of the guide groove lb of the outer joint member 1.
  • FIG. 4A is a longitudinal sectional view showing a state where the bending angle of a fixed type constant velocity universal joint according to another embodiment is 0 °.
  • FIG. 4B is a longitudinal sectional view showing a state of a maximum bending angle (60 °) of a fixed type constant velocity universal joint according to another embodiment.
  • FIG. 5 is an enlarged cross-sectional view of the ball 4 portion of the cage 5.
  • FIG. 6 is an enlarged sectional view showing a window of cage 5.
  • FIG. 7 is a longitudinal sectional view showing a state where a fixed type constant velocity universal joint is bent.
  • FIG. 8 is a longitudinal sectional view showing a state where a fixed type constant velocity universal joint according to another embodiment is bent.
  • FIG. 9 is a longitudinal sectional view showing another example of a fixed type constant velocity universal joint at a bending angle of 0 °.
  • FIG. 10 is a longitudinal sectional view showing a conventional fixed type constant velocity universal joint.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un joint universel à vitesse constante fixe capable de former un angle de fonctionnement supérieur à un angle conventionnel en permettant à toute bille de saillir hors de la piste de l'élément de joint extérieur sans que la bille ne sorte de la piste. Même si une bille sort de la piste, elle peut retourner dans celle-ci en empêchant toute interférence avec l'élément de joint extérieur qui pourrait nuire au fonctionnement uniforme du joint universel à vitesse constante. L'extrémité d'ouverture de joint de la piste (1b) d'un élément de joint extérieur (1) est utilisée comme section de guidage (1d) ouverte radialement vers l'extérieur. Cette section de guidage (1d) peut renvoyer en douceur la bille (4) qui est sortie de la piste (1b) de l'élément de joint extérieur (1) dans la piste (1b). Etant donné que toute interférence entre une bille (4) et l'élément de joint extérieur (1) est évitée, le joint peut fonctionner de façon uniforme même si un grand angle de fonctionnement est établi.
PCT/JP2007/064470 2006-08-07 2007-07-24 Joint universel à vitesse constante fixe WO2008018290A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2006-214682 2006-08-07
JP2006214682A JP2008039077A (ja) 2006-08-07 2006-08-07 固定型等速自在継手
JP2006220204A JP2008045618A (ja) 2006-08-11 2006-08-11 固定型等速自在継手
JP2006-220204 2006-08-11
JP2006-233746 2006-08-30
JP2006233746A JP2008057613A (ja) 2006-08-30 2006-08-30 固定型等速自在継手

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WO2008018290A1 true WO2008018290A1 (fr) 2008-02-14

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010025317A (ja) * 2008-07-24 2010-02-04 Ntn Corp 等速自在継手
JP2013104462A (ja) * 2011-11-11 2013-05-30 Ntn Corp 固定式等速自在継手
WO2019194046A1 (fr) * 2018-04-03 2019-10-10 Ntn株式会社 Joint homocinétique de type fixe
JP2019184055A (ja) * 2018-04-03 2019-10-24 Ntn株式会社 固定式等速自在継手
WO2020203218A1 (fr) * 2019-04-05 2020-10-08 Ntn株式会社 Articulation réglable homocinétique fixe

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JPS6124731Y2 (fr) * 1981-03-09 1986-07-25
JPS6435122A (en) * 1987-07-01 1989-02-06 Girguis Sobhy Labib Stationary type uniform velocity joint
JPH03189417A (ja) * 1989-11-30 1991-08-19 Loehr & Bromkamp Gmbh 同期作動継手
JPH0736184Y2 (ja) * 1987-12-21 1995-08-16 日産自動車株式会社 等速自在継手
JPH07317791A (ja) * 1994-03-30 1995-12-08 Toyoda Mach Works Ltd 等速ジョイント
JP2000509799A (ja) * 1997-02-21 2000-08-02 ジー・ケー・エヌ・レブロ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング 定速度自在継ぎ手

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JP2010025317A (ja) * 2008-07-24 2010-02-04 Ntn Corp 等速自在継手
JP2013104462A (ja) * 2011-11-11 2013-05-30 Ntn Corp 固定式等速自在継手
US9206855B2 (en) 2011-11-11 2015-12-08 Ntn Corporation Fixed type constant-velocity universal joint
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JP2019184055A (ja) * 2018-04-03 2019-10-24 Ntn株式会社 固定式等速自在継手
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WO2020203218A1 (fr) * 2019-04-05 2020-10-08 Ntn株式会社 Articulation réglable homocinétique fixe
JP2020169717A (ja) * 2019-04-05 2020-10-15 Ntn株式会社 固定式等速自在継手
JP7370159B2 (ja) 2019-04-05 2023-10-27 Ntn株式会社 固定式等速自在継手

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