WO2007148481A1 - 摺動式等速自在継手 - Google Patents
摺動式等速自在継手 Download PDFInfo
- Publication number
- WO2007148481A1 WO2007148481A1 PCT/JP2007/059567 JP2007059567W WO2007148481A1 WO 2007148481 A1 WO2007148481 A1 WO 2007148481A1 JP 2007059567 W JP2007059567 W JP 2007059567W WO 2007148481 A1 WO2007148481 A1 WO 2007148481A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- joint member
- ball
- cage
- constant velocity
- diameter surface
- 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
-
- 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
Definitions
- the present invention relates to a constant velocity universal joint used for a power transmission shaft of an automobile or the like, and in particular, a sliding type constant velocity universal joint capable of angular displacement and axial displacement between a drive shaft and a driven shaft (
- a sliding constant velocity universal joint is an outer ring as an outer joint member in which a plurality of linear track grooves 2 are formed in an axial direction on a cylindrical inner surface 1.
- an inner ring 6 as an inner joint member in which the same number of linear track grooves 5 as the track grooves 2 of the outer ring 3 are formed in the axial direction on the spherical outer diameter surface 4, and the track grooves 2 and inner rings of the outer ring 3
- a torque transmission ball 7 interposed between the six track grooves 5 and a cage 8 holding the torque transmission ball 7 are provided.
- a selection (or spline) 9 for connecting a shaft (not shown) to the inner peripheral surface of the inner ring 6 is formed.
- the cage 8 is an annulus provided with a plurality of pockets 10 for accommodating the torque transmission balls 7.
- the cage 8 has a convex spherical outer surface 8 a guided in contact with the inner diameter surface 1 of the outer ring 3, and an inner ring 6.
- a concave spherical inner surface 8b which is brought into contact with and guided by the outer peripheral surface 4.
- the center of curvature Ol of the outer surface 8a, the center of curvature 02 of the inner surface 8b, and the joint center plane P including the force ball center B are offset to the opposite side in the axial direction.
- the cage 8 rotates on the inner cylindrical surface of the outer joint member around the center of curvature Ol of the outer surface 8a, and the inner joint member is the center of curvature of the inner surface 8b of the cage 8.
- 02 Rotate around.
- the position of the ball 7 is determined by the inclination of the track, and the cage 8 holding the ball 7 is also restricted by the ball position.
- the ball 7 held by the cage 8 rolls on the tracks of the outer joint member and the inner joint member, and the cage 8 slides on the corresponding surfaces of the outer joint member and the inner joint member.
- the center of curvature 01, 02 of the outer surface 8a and the inner surface 8b of the cage 8 is offset by an equal distance with respect to the joint center plane P including the ball center B.
- the ball 7 can be secured on the bisector of the input shaft and the output shaft at all rotation angles.
- the internal parts including the inner joint member, the ball 7 and the cage 8 slide along the axial direction in the outer joint member. For this reason, in general, it is necessary to form an internal part slip-off preventing portion in the opening of the outer joint member.
- Patent Document 1 Conventionally, there is one in which a raised portion is provided at an end portion in the axial direction of a track groove of an outer joint member (Patent Document 1).
- the raised portion is provided at the deepest portion of the bottom surface of the track groove. The ball is locked to the raised portion, thereby preventing the inner part from coming off from the opening of the outer joint member.
- Patent Document 1 JP 11 336782 A
- the raised portion T is provided at the deepest portion of the bottom surface of the track groove 2. For this reason, if the ball 7 is positioned at the opening of the outer ring 3, the ball 7 comes into contact with the raised portion T and is prevented from coming off. However, the contact portion of the ball 7 of the force bulge portion T is one place on the outer surface. For this reason, when the pressing force in the disconnecting direction is received at one place, the disconnection prevention function is unstable, and there is a possibility that the internal parts may come out of the outer ring force. In addition, since the raised portion T is formed by caulking, the formation of the raised portion T having a size functioning as a stopper is not stable, and there is a possibility that the quality may vary.
- the sliding constant velocity universal joint of the present invention includes an outer joint member in which a plurality of linear track grooves are formed in an axial direction on a cylindrical inner diameter surface, and a plurality of linear shapes on a spherical outer diameter surface.
- the track groove An inner joint member formed in the axial direction, a ball that is interposed between the track groove of the outer joint member and the track groove of the inner joint member, and transmits the torque, and the inner surface of the outer joint member and the inner joint member
- a cage for holding the ball which is interposed between the outer diameter surface of the inner joint member, and a sliding-type constant velocity freely formed in the outer joint member by forming an inner joint member, a ball and the cage including an internal component prevention portion.
- the drop prevention portion is composed of a pair of ball locking projections projecting inward from the groove so as to face each other at the axially open end of the track groove of the outer joint member.
- the pair of balls projecting inward in the groove so as to face each other at the opening end in the axial direction of the track groove of the outer joint member. Since it is made up of locking projections, it is possible to receive the pressing force in the direction of withdrawal from the ball at two locations for each ball. For this reason, the ball can be received in a stable state. Also, since the ball locking projections can be received by dispersing the pressing force in the pulling direction, even if each ball locking projection is relatively small, it can receive this pressing force. .
- the pair of ball locking protrusions of the drop prevention portion can be provided at the center in the groove depth direction on the groove bottom surface or at both ends in the groove width direction.
- Another sliding type constant velocity universal joint includes an outer joint member in which a plurality of linear track grooves are formed in the axial direction on a cylindrical inner diameter surface, and a plurality of linear shapes on a spherical outer diameter surface.
- An inner joint member in which the track groove is formed in the axial direction, a ball that is interposed between the track groove of the outer joint member and the track groove of the inner joint member, and the inner diameter surface and inner side of the outer joint member A sliding type or the like having a cage for holding the ball interposed between the outer diameter surfaces of the joint member, and an inner joint member, a ball and the cage including an internal part prevention portion formed on the outer joint member.
- This is a quick universal joint, and at the opening end of the outer joint member, a cage locking protrusion is provided between the track grooves adjacent in the circumferential direction of the inner diameter surface of the outer joint member.
- the omission prevention part is constituted by a projection for use.
- a cage locking projection that protrudes toward the inner diameter side is provided between the track grooves adjacent to each other in the circumferential direction of the inner diameter surface of the outer joint member. Since the stopper protrusion constitutes the removal prevention part, it is possible to receive the pressing force in the removal direction at multiple locations. wear. For this reason, the cage can be received in a stable state. In addition, since the cage locking projections can be received by dispersing the pressing force in the removal direction, even if each cage locking projection is relatively small, it can receive this pressing force.
- the cage has a convex spherical outer surface that is contact-guided to the inner diameter surface of the outer joint member, and a concave spherical inner surface that is contact-guided to the outer diameter surface of the inner joint member,
- the center of curvature of the outer surface and the center of curvature of the inner surface are offset in the axial direction opposite to the joint center plane including the ball center, and the outer surface of the cage and the inner diameter surface of the outer joint member It is also possible to arrange the contact position closer to the opening end of the outer joint member than the joint center plane.
- the sliding type constant velocity universal joint of the present invention it is possible to receive the pressing force in the pulling direction from the ball at two locations for each ball. For this reason, the ball can be received in a stable state, and the reliability as a sliding constant velocity universal joint is improved. Also, since the ball locking projections can be received by distributing the pressing force in the withdrawal direction, even if each ball locking projection is relatively small, it can receive this pressing force. . For this reason, the workability
- the distance between the pair of ball locking projections facing each other can be relatively large. It is possible to improve the stagger function.
- the gap between the pair of ball locking protrusions facing each other can be further increased, and the stopper function can be further improved.
- the constant velocity universal joint shown in FIGS. 1 and 2 has an outer surface in which a plurality of (in this case, four) linear track grooves 12 are formed in the axial direction on a cylindrical inner peripheral surface (inner diameter surface) 11.
- a tornek transmission ball 17 interposed between the track groove 12 of the outer ring 13 and the track groove 15 of the inner ring 16, and a cage 18 that holds the torque transmission ball 17.
- a selection (or spline) 19 for connecting a shaft (not shown) to the inner peripheral surface of the inner ring 16 is formed.
- the outer ring 13 includes a cup portion 13a in which the track groove 12 is formed on the inner diameter surface 11, and a stem portion 13b protruding from the bottom wall of the cup portion 13a.
- the cage 18 is an annulus having a plurality of (in this case, four) pockets 20 for accommodating the torque transmission balls 17, and a spherical outer peripheral surface (outer surface) 18a is an inner diameter surface of the outer ring 13. 11, the spherical inner peripheral surface (inner surface) 18 b is contacted and guided to the outer diameter surface 14 of the inner ring 16.
- the center of curvature Ol of the outer surface 18a and the center of curvature 02 of the inner surface 18b are offset to the opposite side in the axial direction with respect to the joint center plane P including the ball center B.
- the inner ring member inner ring 16
- the ball 17 and the inner part 21 including the cage 18 are prevented from being detached 22 in the outer ring 13 which is the outer joint member.
- the outer ring 13 faces the track groove 12 at the axially open end.
- a pair of ball locking projections 23, 23 projecting inward of the groove is provided, and the pair of ball locking projections 23, 23 constitute a drop prevention portion 22.
- a chamfered portion (chamfer) 24 is formed on the opening end surface of the outer ring 13 and is formed corresponding to the chamfer 24.
- a ball locking protrusion 23 protruding from the track groove 12 is formed. Will be formed.
- the Bonole locking projection 23 is provided at the groove depth direction center portion 26 on the groove bottom surface, and the dimension A between the pair of ball locking projections 23 facing each other is relatively large. Can do.
- the positions of the ball locking projections 23 may be provided at both ends 27 in the groove width direction on the bottom surface of the groove as indicated by phantom lines in FIG.
- the dimension A1 between the pair of ball locking protrusions 23 facing each other can be made larger than the dimension A between the ball locking protrusions 23 shown by the solid line in FIG.
- the pair of protrusion prevention portions 22 protrudes inward of the groove so as to face each other at the axially open end of the track groove 12 of the outer joint member. Therefore, it is possible to receive the pressing force in the pulling direction from the ball 17 at two locations for each ball. Therefore, the ball 17 can be received in a stable state, and the reliability as a sliding type constant velocity universal joint is improved.
- the ball locking projections 23 can be received by dispersing the pressing force in the pulling direction, even if the ball locking projections 23 are relatively small, this pressing force is applied. Can receive. For this reason, it is possible to improve workability when the internal component 21 is incorporated into the outer joint member. That is, if the protrusion amount in the inner diameter direction of the ball locking protrusion 23 is large, the assembling workability is poor.
- the pair of ball locking projections 23 of the drop prevention portion 22 at the groove depth direction central portion 26 on the groove bottom surface, the pair of ball locking projections 23, 23 facing each other are provided.
- the interval can be made relatively large, and the stopper function can be improved.
- the distance between the pair of ball locking protrusions 23 facing each other can be further increased, and the stopper function can be further improved.
- FIGS. 4 and 5 show another embodiment.
- the circumference of the inner diameter surface 11 of the outer ring 13 is shown.
- a cage locking projection 30 protruding toward the inner diameter side is provided between the track grooves adjacent in the direction, and the cage locking projection 30 constitutes the removal preventing portion 22.
- a force S can be formed to form the cage locking projection 30 protruding toward the inner diameter side. That is, it can be formed by pressing the protrusion forming jig along the outward force axis direction of the opening end surface 31 of the outer ring 13.
- the cage 18 constitutes the cage 22 that constitutes the slip prevention part 22. It will be in contact with the locking projection 30, and the sliding of the internal component 21 to the further opening side is restricted.
- a cage locking projection 30 is provided between the track grooves adjacent to each other in the circumferential direction of the inner diameter surface 11 of the outer joint member. Since the cage locking projection 30 constitutes the removal preventing portion 22, it is possible to receive the pressing force in the removal direction from the cage 18 at a plurality of locations. For this reason, the cage 18 can be received in a stable state, and the reliability as a sliding type constant velocity universal joint is improved.
- the contact position 40 between the outer surface 18a of the cage 18 and the inner diameter surface 11 of the outer ring 13 is on the side opposite to the opening end (back side) of the outer ring 13 from the joint center plane P. It was arranged so that it would come. Therefore, in a state where the internal part 21 slides toward the opening side and the cage 18 is in contact with the cage locking projection 30 and is prevented from being pulled out, the ball 17 projects greatly from the opening of the outer ring 13. It has become.
- the ball 17 does not protrude greatly from the opening of the outer ring 13.
- the contact position 40 between the outer surface 18a of the cage 18 and the inner diameter surface 11 of the outer ring 13 is arranged to be closer to the opening end side of the outer ring 13 than the joint center plane P. That's fine. That is, the center of curvature Ol of the outer surface 18a is disposed on the opening side of the joint center plane P including the ball center B, and the center of curvature 02 of the inner surface 18b is disposed on the side opposite to the opening of the joint center plane P. Should be installed
- a locking projection 23 and a cage locking projection 30 shown in FIG. 4 may be provided.
- the shape and size of the ball locking protrusion 23 can be varied within the range that the ball 17 can be locked and the internal component 21 can be prevented from being pulled out, and the internal component 21 can be incorporated into the outer ring 13. Can change.
- the cage locking protrusions 30 can be shaped and sized, and the cage 18 can be locked to prevent the internal component 21 from being pulled out. Various changes can be made as long as 1 can be incorporated.
- Various numbers of balls can be used as the number of balls of the sliding type constant velocity universal joint, not limited to three or four. Therefore, the number of cage locking projections 30 can be changed according to the number of balls. Further, when the number of balls is large, it is not necessary to provide the ball locking protrusions 23 in all the track grooves 12, and the cage locking protrusions 30 may not be provided between the track grooves.
- FIG. 1 is a sectional view of a sliding type constant velocity universal joint according to the present invention.
- FIG. 2 is a front view of the sliding constant velocity universal joint of FIG.
- FIG. 3 is an enlarged view of a main part of the sliding constant velocity universal joint of FIG.
- FIG. 4 is a sectional view of another sliding constant velocity universal joint according to the present invention.
- FIG. 5 is a front view of the sliding constant velocity universal joint of FIG.
- FIG. 6 is a sectional view of another sliding constant velocity universal joint according to the present invention.
- FIG. 7 is a sectional view of a conventional sliding type constant velocity universal joint.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0713567-0A BRPI0713567A2 (pt) | 2006-06-23 | 2007-05-09 | junta universal de velocidade constante do tipo deslizante |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006174154A JP2008002627A (ja) | 2006-06-23 | 2006-06-23 | 摺動式等速自在継手 |
| JP2006-174154 | 2006-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007148481A1 true WO2007148481A1 (ja) | 2007-12-27 |
Family
ID=38833224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/059567 Ceased WO2007148481A1 (ja) | 2006-06-23 | 2007-05-09 | 摺動式等速自在継手 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2008002627A (ja) |
| CN (1) | CN101466960A (ja) |
| BR (1) | BRPI0713567A2 (ja) |
| WO (1) | WO2007148481A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011078103A1 (ja) * | 2009-12-22 | 2011-06-30 | Ntn株式会社 | トリポード型等速自在継手 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252033A (zh) * | 2011-07-22 | 2011-11-23 | 温州市冠盛汽车零部件集团股份有限公司 | 一种高抗扭轻便型滑移万向节及其加工工艺 |
| CN103883633B (zh) * | 2014-04-10 | 2016-04-20 | 上海纳铁福传动系统有限公司 | 一种球笼型滑动万向节 |
| JP6975814B2 (ja) * | 2020-03-11 | 2021-12-01 | Ntn株式会社 | 摺動式等速自在継手用外側継手部材、及び摺動式等速自在継手 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123744A (en) * | 1977-04-02 | 1978-10-28 | Nissan Motor Co Ltd | Driving device |
| JPS5830027U (ja) * | 1981-08-21 | 1983-02-26 | 本田技研工業株式会社 | 等速自在継手 |
| JP2002054650A (ja) * | 2000-08-09 | 2002-02-20 | Ntn Corp | 摺動型等速自在継手およびそれを用いたドライブシャフト |
| JP2006153135A (ja) * | 2004-11-29 | 2006-06-15 | Toyoda Mach Works Ltd | 等速ジョイント、等速ジョイントの加工方法および等速ジョイントの組付方法ならびに等速ジョイントの組付冶具 |
-
2006
- 2006-06-23 JP JP2006174154A patent/JP2008002627A/ja active Pending
-
2007
- 2007-05-09 BR BRPI0713567-0A patent/BRPI0713567A2/pt not_active Application Discontinuation
- 2007-05-09 CN CNA200780021783XA patent/CN101466960A/zh active Pending
- 2007-05-09 WO PCT/JP2007/059567 patent/WO2007148481A1/ja not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123744A (en) * | 1977-04-02 | 1978-10-28 | Nissan Motor Co Ltd | Driving device |
| JPS5830027U (ja) * | 1981-08-21 | 1983-02-26 | 本田技研工業株式会社 | 等速自在継手 |
| JP2002054650A (ja) * | 2000-08-09 | 2002-02-20 | Ntn Corp | 摺動型等速自在継手およびそれを用いたドライブシャフト |
| JP2006153135A (ja) * | 2004-11-29 | 2006-06-15 | Toyoda Mach Works Ltd | 等速ジョイント、等速ジョイントの加工方法および等速ジョイントの組付方法ならびに等速ジョイントの組付冶具 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011078103A1 (ja) * | 2009-12-22 | 2011-06-30 | Ntn株式会社 | トリポード型等速自在継手 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101466960A (zh) | 2009-06-24 |
| JP2008002627A (ja) | 2008-01-10 |
| BRPI0713567A2 (pt) | 2012-10-23 |
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