Six-fairway fixed type constant velocity universal joint

Abstract

The utility model relates to the technical field of constant velocity universal joints, and discloses a six-fairway fixed type constant velocity universal joint which comprises a driving shaft, a first hoop, a second hoop and a spline plug, fixing mechanisms are arranged at the two ends of the outer wall of the driving shaft, and a rotating mechanism is arranged at one end of each fixing mechanism. According to the device, a plurality of first inserting pieces on a first fixing ring at one end of the dust cover are inserted into second inserting grooves formed in a second fastening groove in the outer wall of a ball cage in a sliding mode, and then second inserting pieces on a second fixing ring at the other end of the dust cover are inserted into first inserting grooves formed in a first fastening groove in the outer wall of a driving shaft in a sliding mode; and finally, the first clamping hoop is arranged on the outer wall of the second fastening groove in a sleeving mode and fastened, the second clamping hoop is arranged on the outer wall of the first fastening groove in a sleeving mode and fastened, and therefore the two ends of the dust cover are fastened, the fastening degree of the dust cover is enhanced, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of constant velocity universal joint technology, and in particular to a six-ball-track fixed constant velocity universal joint. Background Technology

[0002] The six-ball-track fixed constant velocity universal joint is a type of ball cage universal joint with six raceways on both the inner and outer cages. Power is transmitted through the rolling of steel balls within the raceways. It is characterized by its compact structure and high load-bearing capacity, making it suitable for high-torque, large-angle (typically ≤45°) transmissions, such as automotive drive shafts, and widely used in the fixed end of front-wheel-drive (FF) vehicles.

[0003] However, most six-channel fixed constant velocity universal joints only have their dust covers secured by clamps. Over long periods of operation, the dust covers may loosen and shift, affecting the dustproof effect of the device. In addition, the adjacent inner and outer ball tracks of most six-channel fixed constant velocity universal joints are arranged in parallel. The parallel ball track design creates a directional lubrication path. When the steel balls are at the extreme position of the rotation, local dry friction is likely to occur, affecting lubrication. All of these factors reduce the practicality of the device.

[0004] Therefore, those skilled in the art have provided a six-ball-track fixed constant velocity universal joint to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a six-ball-track fixed constant velocity universal joint. The device involves sliding multiple first inserts on the first fixing ring at one end of the dust cover into the second insertion slots opened in the second fastening groove on the outer wall of the ball cage. Then, the second inserts on the second fixing ring at the other end of the dust cover are slid into the first insertion slots opened in the first fastening groove on the outer wall of the drive shaft, thus accurately positioning both ends of the dust cover. Finally, a first clamp is fitted onto the outer wall of the second fastening groove and tightened, and a second clamp is fitted onto the outer wall of the first fastening groove and tightened, thereby securing both ends of the dust cover, enhancing the tightness of the dust cover, and improving the practicality of the device.

[0006] To achieve the above objectives, this utility model provides a six-ball-track fixed constant velocity universal joint, including a drive shaft, a first clamp, a second clamp, and a spline plug. Both ends of the outer wall of the drive shaft are provided with fixing mechanisms, and one end of the fixing mechanism is provided with a rotating mechanism.

[0007] The fixing mechanism includes two dust covers. A first fixing ring is fixedly connected to one end of each dust cover. Multiple first inserts are fixedly connected to the outer wall of the first fixing ring. A second fixing ring is fixedly connected to one end of each dust cover. Multiple second inserts are fixedly connected to the outer wall of the second fixing ring. A first fastening groove is provided at both ends of the outer wall of the drive shaft. Multiple first insertion grooves are provided on the outer wall of the first fastening groove. A second fastening groove is provided at one end of the outer wall of the rotating mechanism. Multiple second insertion grooves are provided on the outer wall of the second fastening groove. The rotating mechanism includes a ball cage. Multiple outer ball tracks are provided on the inner wall of the ball cage. A support frame is slidably connected to one side of the inner wall of the ball cage. Multiple limiting frames are provided on the outer wall of the support frame. A star-shaped sleeve is slidably connected to one side of the inner wall of the support frame. A spline hole is provided in the middle of one end face of the star-shaped sleeve. Multiple inner ball tracks are provided on the outer wall of the star-shaped sleeve. A steel ball is slidably connected to one side of the outer wall of the inner ball track.

[0008] Through the above technical solution, the device slides multiple first inserts on the first fixing ring at one end of the dust cover into the second insertion slot opened in the second fastening groove on the outer wall of the ball cage. Then, it slides the second inserts on the second fixing ring at the other end of the dust cover into the first insertion slot opened in the first fastening groove on the outer wall of the drive shaft, so that both ends of the dust cover are accurately positioned. Finally, the first clamp is fitted on the outer wall of the second fastening groove and tightened, and the second clamp is fitted on the outer wall of the first fastening groove and tightened, thereby tightening both ends of the dust cover, enhancing the tightness of the dust cover and improving the practicality of the device. The device reduces the rate of change of contact angle when the steel ball slides on the cross-track by the cross arrangement of adjacent outer and inner ball tracks, and the steel ball can fully contact the grease, reducing wear and improving the practicality of the device.

[0009] Furthermore, a second clamp is provided at both ends of the outer wall of the drive shaft, and a spline plug is fixedly connected to both ends of the drive shaft;

[0010] Through the above technical solution, the second clamp is used to fit tightly against and secure the second insert that is slidably inserted, and the spline plug slides into the spline hole so that the drive shaft can rotate with the star sleeve.

[0011] Furthermore, a first clamp is fitted onto the outer wall of the first fastening groove;

[0012] Through the above technical solution, the first clamp is used to fit tightly against and secure the first insert piece that is slidably inserted.

[0013] Furthermore, a second fastening groove is provided at one end of the outer wall of the ball cage, and a second clamp is fitted on the outer wall of the second fastening groove;

[0014] Through the above technical solution, one end of the dust cover can be fixed to one end of the ball cage, providing protection for the various components inside the ball cage.

[0015] Furthermore, the first insert passes through one end of one side face of the second fastening groove and forms a sliding connection with the second insertion groove, and the second insert passes through one end of one side face of the first fastening groove and forms a sliding connection with the first insertion groove.

[0016] With the above technical solution, the dust cover remains fixed in the corresponding slots at both ends even after long-term use, and is not easy to loosen or shift.

[0017] Furthermore, the adjacent outer lanes have opposite inclination directions but the same angle, and the adjacent inner lanes have opposite inclination directions but the same angle.

[0018] Through the above technical solution, the rate of change of contact angle of the steel ball is reduced when it slides on the intersecting lanes, and the entire body of the steel ball can fully contact the lubricating grease.

[0019] Furthermore, the adjacent limiting frames are tilted in opposite directions, but at the same angle;

[0020] The above technical solution restricts the range of motion of the steel ball, preventing it from falling.

[0021] Furthermore, one side of the outer wall of the spline plug forms a sliding connection with one side of the outer wall of the spline hole;

[0022] Through the above technical solution, the spline plug slides into the spline hole, allowing the drive shaft to rotate with the rotation of the star sleeve and to transfer kinetic energy to the ball cage at the other end through the drive shaft.

[0023] This utility model has the following beneficial effects:

[0024] 1. The present invention proposes a six-ball-track fixed constant velocity universal joint. The device slides multiple first inserts on the first fixing ring at one end of the dust cover into the second insertion slots opened in the second fastening groove on the outer wall of the ball cage. Then, the second inserts on the second fixing ring at the other end of the dust cover are slid into the first insertion slots opened in the first fastening groove on the outer wall of the drive shaft, so that the two ends of the dust cover are accurately positioned. Finally, the first clamp is fitted on the outer wall of the second fastening groove and tightened, and the second clamp is fitted on the outer wall of the first fastening groove and tightened. This strengthens the tightness of the dust cover and improves the practicality of the device.

[0025] 2. The present invention proposes a six-ball-track fixed constant velocity universal joint. The device reduces the rate of change of contact angle when the steel ball slides on the cross-track by the cross arrangement of adjacent outer and inner ball tracks. The steel ball can fully contact the lubricating grease, reducing wear and improving the practicality of the device. Attached Figure Description

[0026] Figure 1This is an isometric view of a six-ball-track fixed constant velocity universal joint proposed in this utility model;

[0027] Figure 2 This is an exploded structural diagram of a six-ball-track fixed constant velocity universal joint proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of a dust cover for a six-ball-track fixed constant velocity universal joint proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the drive shaft of a six-ball-track fixed constant velocity universal joint proposed in this utility model;

[0030] Figure 5 This is an exploded structural diagram of the rotating mechanism of a six-ball-track fixed constant velocity universal joint proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of the spline hole and inner ball track of a six-ball track fixed constant velocity universal joint proposed in this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Drive shaft; 2. Fixing mechanism; 21. Dust cover; 22. First fixing ring; 23. First insert; 24. Second fixing ring; 25. Second insert; 26. First fastening groove; 27. First insertion groove; 28. Second fastening groove; 29. ​​Second insertion groove; 3. Rotating mechanism; 31. Ball cage; 32. Outer ball track; 33. Support frame; 34. Limiting frame; 35. Star sleeve; 36. Spline hole; 37. Inner ball track; 38. Steel ball; 4. First clamp; 5. Second clamp; 6. Spline plug. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1-3 This utility model provides a specific implementation method:

[0036] A six-ball-track fixed constant velocity universal joint includes a drive shaft 1, a first clamp 4, a second clamp 5, and a spline plug 6. Both ends of the outer wall of the drive shaft 1 are provided with fixing mechanisms 2. One end of each fixing mechanism 2 is provided with a rotating mechanism 3. Each fixing mechanism 2 includes two dust covers 21. One end of each dust cover 21 is fixedly connected to a first fixing ring 22, and the outer wall of the first fixing ring 22 is fixedly connected to multiple first inserts 23. One end of each dust cover 21 is fixedly connected to a second fixing ring 24, and the outer wall of the second fixing ring 24 is fixedly connected to multiple second inserts 23. 5. Both ends of the outer wall of the drive shaft 1 are provided with first fastening grooves 26, and the outer wall of the first fastening grooves 26 is provided with multiple first insertion grooves 27. One end of the outer wall of the rotating mechanism 3 is provided with a second fastening groove 28, and the outer wall of the second fastening groove 28 is provided with multiple second insertion grooves 29. The rotating mechanism 3 includes a ball cage 31, the inner wall of the ball cage 31 is provided with multiple outer ball tracks 32, a support frame 33 is slidably connected to one side of the inner wall of the ball cage 31, the outer wall of the support frame 33 is provided with multiple limiting frames 34, and a star-shaped sleeve 3 is slidably connected to one side of the inner wall of the support frame 33. 5. A spline hole 36 is provided in the middle of one end face of the star-shaped sleeve 35. Multiple inner ball tracks 37 are provided on the outer wall of the star-shaped sleeve 35. A steel ball 38 is slidably connected to one side of the outer wall of the inner ball track 37. The device is constructed by sliding multiple first inserts 23 on the first fixing ring 22 at one end of the dust cover 21 into the second insertion groove 29 on the second fastening groove 28 on the outer wall of the ball cage 31, and then sliding the second inserts 23 on the second fixing ring 24 at the other end of the dust cover 21 into the first insertion groove 29 on the first fastening groove 26 on the outer wall of the drive shaft 1. 7. This ensures that both ends of the dust cover 21 are accurately positioned. Finally, the first clamp 4 is fitted onto the outer wall of the second fastening groove 28 and tightened, and the second clamp 5 is fitted onto the outer wall of the first fastening groove 26 and tightened. This tightens both ends of the dust cover 21, enhancing the tightness of the dust cover 21 and improving the practicality of the device. The device reduces the rate of change of the contact angle of the steel ball 38 when it slides on the cross-track by the cross arrangement of adjacent outer ball tracks 32 and adjacent inner ball tracks 37. The steel ball 38 can fully contact the lubricating grease around its body, reducing wear and improving the practicality of the device.

[0037] Reference Figure 3-6 The two ends of the outer wall of the drive shaft 1 are provided with second clamps 5, and the two ends of the drive shaft 1 are fixedly connected with spline plugs 6. The second clamps 5 are used to fit tightly against the second insert 23 that is slidably inserted and to fasten it. The spline plugs 6 slide into the spline hole 36 so that the drive shaft 1 can rotate with the star sleeve 35.

[0038] The outer wall of the first fastening groove 26 is fitted with a first clamp 4, which is used to fit and fasten the first insert 23 that is slidably inserted.

[0039] A second fastening groove 28 is provided at one end of the outer wall of the ball cage 31, and a second clamp 5 is fitted on the outer wall of the second fastening groove 28. One end of the dust cover 21 can be fixed to one end of the ball cage 31 to protect the various components inside the ball cage.

[0040] The first insert 23 passes through one end of one side face of the second fastening groove 28 and forms a sliding connection with the second insertion groove 29. The second insert 25 passes through one end of one side face of the first fastening groove 26 and forms a sliding connection with the first insertion groove 27. The dust cover 21 remains fixed at both ends in the corresponding grooves under long-term use and is not easy to loosen or shift.

[0041] The adjacent outer lanes 32 have opposite tilt directions but the same angle, and the adjacent inner lanes 37 have opposite tilt directions but the same angle. When the steel ball 38 slides across the lanes, the rate of change of the contact angle decreases, and the steel ball 38 can fully contact the grease around its entire body.

[0042] The adjacent limit frames 34 have opposite tilt directions but the same angle. The limit frames 34 restrict the range of motion of the steel ball 38 and prevent it from falling.

[0043] One side of the outer wall of the spline plug 6 forms a sliding connection with one side of the outer wall of the spline hole 36. The spline plug 6 slides into the spline hole 36 so that the drive shaft 1 can rotate with the rotation of the star sleeve 35 and can transmit kinetic energy to the ball cage 31 at the other end through the drive shaft 1.

[0044] Working principle: The device slides multiple first inserts 23 on the first fixing ring 22 at one end of the dust cover 21 into the second insertion slot 29 on the second fastening groove 28 on the outer wall of the ball cage 31. Then, it slides the second inserts 23 on the second fixing ring 24 at the other end of the dust cover 21 into the first insertion slot 27 on the first fastening groove 26 on the outer wall of the drive shaft 1, so that both ends of the dust cover 21 are accurately positioned. Finally, the first clamp 4 is fitted onto the outer wall of the second fastening groove 28 and is tightly attached to the first inserts 23 and fastened. The second clamp 5 is fitted onto the outer wall of the first fastening groove 26 and is tightly attached to the second inserts 25 and fastened. Thus, both ends of the dust cover 21 are fastened. The device reduces the rate of change of the contact angle when the steel ball 38 slides on the cross tracks by the cross arrangement of adjacent outer ball tracks 32 and adjacent inner ball tracks 37, so that the steel ball 38 can fully contact the grease.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A six-track fixed type constant velocity joint comprising a driving shaft (1), a first clamp (4), a second clamp (5) and a spline plug (6), characterized in that: Both ends of the outer wall of the drive shaft (1) are provided with fixing mechanisms (2), and one end of the fixing mechanism (2) is provided with a rotating mechanism (3). The fixing mechanism (2) includes two dust covers (21). One end of the dust cover (21) is fixedly connected to a first fixing ring (22). The outer wall of the first fixing ring (22) is fixedly connected to a plurality of first inserts (23). One end of the dust cover (21) is fixedly connected to a second fixing ring (24). The outer wall of the second fixing ring (24) is fixedly connected to a plurality of second inserts (25). Both ends of the outer wall of the drive shaft (1) are provided with first fastening grooves (26). The outer wall of the first fastening groove (26) is provided with a plurality of first insertion grooves (27). One end of the outer wall of the rotating mechanism (3) is provided with a second fastening groove (28). The outer wall of the fastening groove (28) is provided with a plurality of second insertion grooves (29). The rotating mechanism (3) includes a ball cage (31). The inner wall of the ball cage (31) is provided with a plurality of outer ball tracks (32). A support frame (33) is slidably connected to one side of the inner wall of the ball cage (31). A plurality of limiting frames (34) are provided on the outer wall of the support frame (33). A star-shaped sleeve (35) is slidably connected to one side of the inner wall of the support frame (33). A spline hole (36) is provided in the middle of one end face of the star-shaped sleeve (35). A plurality of inner ball tracks (37) are provided on the outer wall of the star-shaped sleeve (35). A steel ball (38) is slidably connected to one side of the outer wall of the inner ball track (37).

2. A fixed type six-track constant velocity joint according to claim 1, characterized in that: The two ends of the outer wall of the drive shaft (1) are provided with second clamps (5), and the two ends of the drive shaft (1) are fixedly connected with spline plugs (6).

3. A fixed type six-track constant velocity joint according to claim 1, characterized in that: The outer wall of the first fastening groove (26) is fitted with a first clamp (4).

4. A fixed type six-track constant velocity joint according to claim 1, characterized in that: A second fastening groove (28) is provided at one end of the outer wall of the ball cage (31), and a second clamp (5) is fitted on the outer wall of the second fastening groove (28).

5. A fixed type six-track constant velocity joint according to claim 1, characterized in that: The first insert (23) passes through one end of one side face of the second fastening groove (28) and forms a sliding connection with the second insertion groove (29). The second insert (25) passes through one end of one side face of the first fastening groove (26) and forms a sliding connection with the first insertion groove (27).

6. A fixed type six-track constant velocity joint according to claim 1, characterized in that: The adjacent outer lanes (32) have opposite tilt directions but the same angle, and the adjacent inner lanes (37) have opposite tilt directions but the same angle.

7. A fixed type six-track constant velocity joint according to claim 1, characterized in that: The adjacent limiting frames (34) have opposite tilt directions but the same angle.

8. A fixed type six-track constant velocity joint according to claim 1, characterized in that: One side of the outer wall of the spline plug (6) is slidably connected to one side of the outer wall of the spline hole (36).

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