Low-yaw constant velocity universal joint assembly

Abstract

The utility model relates to the technical field of automobile parts, and discloses a low yaw constant velocity universal joint assembly which comprises two spherical shells, two ball cages, two planet sleeves and a driving shaft, rolling grooves are formed in the outer walls of the ball cages at intervals, steel balls are arranged in the rolling grooves, connecting mechanisms are arranged on the two sides of the driving shaft, and the connecting mechanisms are connected with the ball cages. And the connecting mechanism comprises two dust covers, two clamping rings and two fixing rings, the outer walls of the clamping rings are in threaded connection with a plurality of first bolts, one ends of the first bolts penetrate through the clamping rings and are in threaded connection with the spherical shell, and the sides, away from the center of the driving shaft, of the dust covers are in clamped connection with the clamping rings. According to the dustproof device, the clamping ring is fixed through the first bolt in the connecting mechanism, the dustproof cover is clamped through the clamping ring, the second bolt penetrates through the fixing ring in a matched mode, the dustproof cover is fixed to the driving shaft, and therefore a user can replace the damaged dustproof cover through a common wrench without a specific tool.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a low yaw constant velocity universal joint assembly. Background Technology

[0002] The low yaw constant velocity universal joint assembly is an important component in the automotive transmission system. It is mainly used to solve the problems caused by angle changes during power transmission, while ensuring the smoothness and efficiency of power transmission. By designing the universal joint as a ball cage type, the body sway caused by changes in transmission angle can be reduced, thereby reducing the yaw rate.

[0003] However, in order to prevent the universal joint from being affected by external factors such as sand and gravel particles, a dust cover needs to be installed. Most of the low yaw constant velocity universal joint assemblies currently available on the market require specific tools and clamps to install the dust cover, making it difficult for users to replace the damaged dust cover and increasing the difficulty of operation.

[0004] Therefore, those skilled in the art have provided a low-yaw constant velocity universal joint assembly to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a low yaw constant velocity universal joint assembly. The first bolt in the connecting mechanism fixes the retaining ring to the spherical shell, and the retaining ring is used to hold the dust cover in place. The second bolt is then passed through the fixing ring to fix the dust cover to the drive shaft. Thus, no special tools are required, and the user can replace the damaged dust cover with a common wrench.

[0006] To achieve the above objectives, this utility model provides a low yaw constant velocity universal joint assembly, including two spherical shells, two ball cages, two planetary sleeves and a drive shaft. The outer wall of the ball cage is provided with grooves spaced apart, and steel balls are provided inside each groove. Connecting mechanisms are provided on both sides of the drive shaft.

[0007] The connecting mechanism includes two dust covers, two retaining rings, and two fixing rings. The outer wall of the dust cover is threaded with multiple first bolts. One end of each first bolt passes through the retaining ring and is threadedly connected to the spherical shell. The side of the dust cover away from the center of the drive shaft is engaged with the retaining ring.

[0008] The outer wall of the fixed ring is threaded with multiple second bolts. One end of each second bolt passes through the fixed ring and the dust cover and is threadedly connected to the drive shaft. Splines are provided on both sides of the drive shaft, and connecting grooves are provided on both sides of the planetary sleeve.

[0009] With the above technical solution, the retaining ring is fixed to the spherical shell by the first bolt in the connecting mechanism, and the dust cover is held in place by the retaining ring. The second bolt is then passed through the fixing ring to fix the dust cover to the drive shaft. Thus, no special tools are required, and the user can replace the damaged dust cover with a common wrench.

[0010] Furthermore, each of the spherical shells is fixedly connected to a connector on the side away from the center of the drive shaft, and each of the planetary sleeves is connected to the drive shaft through a connecting groove and a spline.

[0011] Through the above technical solution, the connecting parts fixedly connected to the two spherical shells can be connected to the engine and the wheel hub respectively, and power is transmitted through the drive shaft. The planetary sleeves are connected to the drive shaft through connecting grooves and splines, so that the drive shaft can be removed from the planetary sleeves. The meshing connection between the splines and connecting grooves allows the rotation of the planetary sleeves or drive shaft to be transmitted to the other party. At the same time, it can transmit a large torque and distribute the force evenly, avoiding the stress concentration problem that may occur in single-tooth connections.

[0012] Furthermore, the inner wall of the spherical shell is provided with multiple outer raceways spaced apart, and the outer wall of the planetary sleeve is provided with multiple inner raceways spaced apart.

[0013] The above technical solution provides space and trajectory grooves for the rolling of the steel ball by opening multiple outer raceways at equal intervals on the inner wall of the spherical shell and multiple inner raceways at equal intervals on the outer wall of the planetary sleeve. In addition, the steel ball can transmit the rotational power between the planetary sleeve and the spherical shell.

[0014] Furthermore, the steel balls all roll inside the inner and outer raceways, and the ball cages are all enclosed by spherical shells;

[0015] The above technical solution allows the ball cage to be enclosed in a spherical shell, which restricts the movement of the steel ball. The movement of the steel ball within the inner and outer raceways allows the planetary sleeve to change angles within the spherical shell, thereby transmitting power at different angles.

[0016] Furthermore, the inner walls of the retaining rings are slidably connected to the spherical shell, and both sides of the outer wall of the drive shaft are fixedly connected to the fixing rings;

[0017] With the above technical solution, after the first bolt is unscrewed, the retaining ring can be removed from the spherical shell, thereby releasing the dust cover from its snap-fit ​​state. The fixing ring fixedly connected to the outer wall of the drive shaft can wrap around one end of the dust cover, allowing the dust cover to fit against the outer wall of the drive shaft.

[0018] Furthermore, the inner walls of the fixed rings are all slidably connected to the dust cover, and the inner walls of the dust cover are all slidably connected to the drive shaft;

[0019] By using the above technical solution, the outer wall of one end of the dust cover is slidably connected to the inner wall of the fixing ring, while the inner wall of the other end is slidably connected to the drive shaft, so that the dust cover can be removed from the drive shaft after the second bolt is unscrewed.

[0020] This utility model has the following beneficial effects:

[0021] This utility model proposes a low yaw constant velocity universal joint assembly. The first bolt in the connecting mechanism fixes the retaining ring to the spherical shell, and the retaining ring is used to hold the dust cover in place. The second bolt is then passed through the fixing ring to fix the dust cover to the drive shaft. Thus, no special tools are required, and the user can replace the damaged dust cover with a common wrench. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of a low yaw constant velocity universal joint assembly proposed in this utility model;

[0023] Figure 2 This is a side sectional view of a low yaw constant velocity universal joint assembly proposed in this utility model;

[0024] Figure 3 This is an exploded view of a partial mechanism of a low yaw constant velocity universal joint assembly proposed in this utility model.

[0025] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 5 for Figure 2 Enlarged view of point B in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Spherical shell; 2. Connecting component; 3. Outer raceway; 4. Ball cage; 5. Roller groove; 6. Steel ball; 7. Planetary sleeve; 8. Inner raceway; 9. Connecting mechanism; 901. Dust cover; 902. Snap ring; 903. First bolt; 904. Retaining ring; 905. Second bolt; 10. Connecting groove; 11. Drive shaft; 12. Spline. Detailed Implementation

[0029] 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.

[0030] Reference Figure 1-5 This utility model provides a specific embodiment: a low yaw constant velocity universal joint assembly, including two spherical shells 1, two ball cages 4, two planetary sleeves 7 and a drive shaft 11. The outer wall of the ball cage 4 is provided with grooves 5 spaced apart, and steel balls 6 are provided inside the grooves 5. Connecting mechanisms 9 are provided on both sides of the drive shaft 11.

[0031] The connecting mechanism 9 includes two dust covers 901, two retaining rings 902 and two fixing rings 904. The outer wall of the dust cover 901 is threaded with multiple first bolts 903. One end of each first bolt 903 passes through the retaining ring 902 and is threadedly connected to the spherical shell 1. The side of the dust cover 901 away from the center of the drive shaft 11 is engaged with the retaining ring 902.

[0032] The outer wall of the retaining ring 904 is threaded with multiple second bolts 905. One end of each second bolt 905 passes through the retaining ring 904 and the dust cover 901 and is threadedly connected to the drive shaft 11. Splines 12 are provided on both sides of the drive shaft 11, and connecting grooves 10 are provided on both sides of the planetary sleeve 7.

[0033] The retaining ring 902 is fixed to the spherical shell 1 by the first bolt 903 in the connecting mechanism 9, and the dust cover 901 is held in place by the retaining ring 902. The second bolt 905 is then passed through the fixing ring 904 to fix the dust cover 901 to the drive shaft 11. Thus, no special tools are required, and the user can replace the damaged dust cover 901 with a common wrench.

[0034] Each spherical shell 1 has a connecting piece 2 fixedly connected to the side away from the center of the drive shaft 11. The planetary sleeves 7 are all connected to the drive shaft 11 via connecting grooves 10 and splines 12. The connecting pieces 2 fixedly connected to the two spherical shells 1 can be connected to the engine and wheel hub respectively, and power is transmitted through the drive shaft 11. The planetary sleeves 7 are connected to the drive shaft 11 via connecting grooves 10 and splines 12, allowing the drive shaft 11 to be detached from the planetary sleeves 7. The splines 12 and connecting grooves 10 mesh, allowing the rotation of the planetary sleeves 7 or the drive shaft 11 to proceed. The torque is transmitted to the other party, and the force is evenly distributed, avoiding the stress concentration problem that may occur in single-tooth connections. The inner wall of the spherical shell 1 is provided with multiple outer raceways 3 at intervals, and the outer wall of the planetary sleeve 7 is provided with multiple inner raceways 8 at intervals. By equally spaced outer raceways 3 on the inner wall of the spherical shell 1 and equally spaced inner raceways 8 on the outer wall of the planetary sleeve 7, space and trajectory grooves are provided for the rolling of the steel balls 6. Furthermore, the steel balls 6 can transmit rotational power between the planetary sleeve 7 and the spherical shell 1. The steel balls 6 roll on both the inner raceways 8 and the outer raceways 8. The ball cage 4 is enclosed by the spherical shell 1, which restricts the movement of the steel ball 6. The movement of the steel ball 6 within the inner and outer raceways 8 and 3 allows the planetary sleeve 7 to change angles within the spherical shell 1, transmitting power at different angles. The inner wall of the retaining ring 902 is slidably connected to the spherical shell 1, and both sides of the outer wall of the drive shaft 11 are fixedly connected to the fixing ring 904. By unscrewing the first bolt 903, the retaining ring 902 can be removed from the spherical shell 1, thereby releasing the dust cover 9. In the snap-fit ​​state of 01, the fixing ring 904 fixedly connected to the outer wall of the drive shaft 11 can wrap around one end of the dust cover 901, so that the dust cover 901 fits against the outer wall of the drive shaft 11. The inner wall of the fixing ring 904 is slidably connected to the dust cover 901, and the inner wall of the dust cover 901 is slidably connected to the drive shaft 11. By allowing the outer wall of one end of the dust cover 901 to slidely connect with the inner wall of the fixing ring 904, and the inner wall of the other end to slidely connect with the drive shaft 11, the dust cover 901 can be removed from the drive shaft 11 after the second bolt 905 is unscrewed.

[0035] Working principle: When using this low yaw constant velocity universal joint assembly, firstly, insert one end of the dust cover 901 into the gap between the retaining ring 904 and the drive shaft 11, and tighten the second bolt 905. Then, connect the drive shaft 11 through the spline 12 and the connecting groove 10 on the planetary sleeve 7. Next, tighten the first bolt 903 to fix the retaining ring 902 on the spherical shell 1, keeping the retaining ring 902 in a snap-fit ​​state against the dust cover 901, thus completing the fixation of the dust cover. Finally, during operation, the steel ball 6 rolls in the outer raceway 3 of the spherical shell 1 and the inner raceway 8 of the planetary sleeve 7, while the ball cage 4 ensures that the steel ball 6 is always on the same plane, so that changes in the angle between the drive shaft 11 and the spherical shell 1 do not affect the power transmission, ensuring the smoothness of power transmission.

[0036] 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 low-tilt constant velocity joint assembly comprising two spherical shells (1), two ball cages (4), two planetary sleeves (7) and a driving shaft (11), characterized in that: The outer wall of the ball cage (4) is provided with multiple roller grooves (5) spaced apart, and steel balls (6) are provided inside each roller groove (5). Connecting mechanisms (9) are provided on both sides of the drive shaft (11). The connecting mechanism (9) includes two dust covers (901), two retaining rings (902) and two fixing rings (904). The outer wall of the retaining ring (902) is threaded with a plurality of first bolts (903). One end of each first bolt (903) passes through the retaining ring (902) and is threadedly connected to the spherical shell (1). The side of the dust cover (901) away from the center of the drive shaft (11) is engaged with the retaining ring (902). The outer wall of the fixed ring (904) is threaded with multiple second bolts (905). One end of each second bolt (905) passes through the fixed ring (904) and the dust cover (901) and is threadedly connected to the drive shaft (11). Splines (12) are provided on both sides of the drive shaft (11), and connecting grooves (10) are provided on both sides of the planetary sleeve (7).

2. A low- yaw constant velocity joint assembly according to claim 1, characterized in that: The spherical shell (1) is fixedly connected to a connector (2) on the side away from the center of the drive shaft (11), and the planetary sleeve (7) is connected to the drive shaft (11) through the connecting groove (10) and spline (12).

3. A low- yaw constant velocity joint assembly according to claim 1, characterized in that: The inner wall of the spherical shell (1) is provided with multiple outer raceways (3) spaced apart, and the outer wall of the planetary sleeve (7) is provided with multiple inner raceways (8) spaced apart.

4. A low- yaw constant velocity joint assembly according to claim 1, characterized in that: The steel balls (6) all roll inside the inner raceway (8) and the outer raceway (3), and the ball cages (4) are all enclosed by the spherical shells (1).

5. A low- yaw constant velocity joint assembly according to claim 1, characterized in that: The inner wall of the retaining ring (902) is slidably connected to the spherical shell (1), and both sides of the outer wall of the drive shaft (11) are fixedly connected to the fixing ring (904).

6. A low- yaw constant velocity joint assembly according to claim 1, characterized in that: The inner walls of the fixed ring (904) are all slidably connected to the dust cover (901), and the inner walls of the dust cover (901) are all slidably connected to the drive shaft (11).

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