阅读说明：本技术 一种球笼式万向节 (Ball cage type universal joint ) 是由 童服仁 林童 于 2021-06-26 设计创作，主要内容包括：本申请涉及一种球笼式万向节,涉及万向节技术领域,包括球座、转动设置于球座内的若干滚珠、设置于球座内和若干滚珠滑动抵接的球头,球座内开设有供球头摆动的转动腔,球头内开设有滑槽,滑槽内滑动设置有滑动抵接件,滑槽内还设有将滑动抵接件抵出球头的弹簧,转动腔朝向球头的腔壁设有和滑动抵接件的圆弧内壁。本申请通过设置弹簧和滑动抵接件,利用弹簧作用于滑动抵接件上,使得滑动抵接件和圆弧内壁滑动抵接,以对球头受到的轴向压力进行缓冲,并对球头起到支撑的作用,从而具有减轻万向节轴向受压较大而产生损伤的优点。(The utility model relates to a ball cage universal joint relates to universal joint technical field, including the ball seat, rotate a plurality of balls that set up in the ball seat, set up in the ball seat and the bulb of a plurality of ball slip butt, seted up in the ball seat and supplied bulb wobbling to rotate the chamber, seted up the spout in the bulb, it is provided with the slip butt piece to slide in the spout, still is equipped with the spring that supports the slip butt piece out the bulb in the spout, rotates the chamber and is equipped with the circular arc inner wall with the slip butt piece towards the chamber wall of bulb. This application utilizes the spring to act on the slip butt piece through setting up spring and slip butt piece for slip butt piece and the slip butt of circular arc inner wall, cushion with the axial pressure that receives the bulb, and play the effect of support to the bulb, thereby have and alleviate the great and advantage that produces the damage of universal joint axial pressurized.)

1. The utility model provides a ball cage universal joint which characterized in that: including ball seat (1), rotate a plurality of balls (121) that set up in ball seat (1), set up in bulb (2) of ball seat (1) and a plurality of ball (121) slip butt, the confession has been seted up in ball seat (1) bulb (2) wobbling rotation chamber (11), spout (22) have been seted up in bulb (2), it is provided with slip butt piece (23) to slide in spout (22), still be equipped with in spout (22) with spring (25) that slip butt piece (23) supported bulb (2), it is equipped with circular arc inner wall (111) with slip butt piece (23) to rotate chamber (11) towards the chamber wall of bulb (2).

2. A rzeppa joint according to claim 1, wherein: the sliding abutting piece (23) comprises a sliding column (231) which slides in the sliding groove (22), and one end, away from the spring (25), of the sliding column (231) is a smooth arc surface which abuts against the arc inner wall (111) in a sliding mode.

3. A rzeppa joint according to claim 2, wherein: the ball head (2) is provided with a fixing column (24) sleeved on the sliding column (231), the fixing column (24) rotates in the rotating cavity (11) along with the ball head (2), and the sliding column (231) slides out of the fixing column (24) and slides and abuts against the arc inner wall (111) under the action of the spring (25) in the sliding groove (22).

4. A rzeppa joint according to claim 3, wherein: the sliding column (231) is provided with a limiting block (232) at one end located in the sliding groove (22), one end of the spring (25) is arranged on the limiting block (232), a through groove (241) for allowing the sliding column (231) to slide is formed in the fixing column (24), and the limiting block (232) is used for abutting against the limiting sliding column (231) on the fixing column (24) to slide away from the through groove (241).

5. A rzeppa joint according to claim 2, wherein: one side of the ball head (2) back to the sliding column (231) is coaxially connected with a driving shaft (21), one end, far away from the ball head (2), of the driving shaft (21) is coaxially connected with a driven shaft (3), and a bolt (32) in threaded connection with the driving shaft (21) is arranged on the driven shaft (3).

6. A rzeppa joint according to claim 5, wherein: the driving shaft (21) is provided with a spline (31) at one end far away from the ball head (2), and a key groove (211) for inserting the spline (31) is formed in the end of the driving shaft (3).

7. A rzeppa joint according to claim 6, wherein: the bolt (32) penetrates through the driven shaft (3) to the sliding groove (22), and one end, far away from the sliding column (231), of the spring (25) abuts against the end face, far away from the driven shaft (3), of the bolt (32).

8. A rzeppa joint according to claim 1, wherein: a ball groove (12) for the ball head (2) to rotate is formed in the ball seat (1), and a retainer (122) for limiting the balls (121) to be separated from the ball groove (12) is arranged in the ball groove (12).

Technical Field

The application relates to the technical field of universal joints, in particular to a ball cage type universal joint.

Background

The universal joint is a part for realizing variable angle power transmission, is used for changing the position of the transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system. The universal joint is combined with a transmission shaft and is called a universal joint transmission device. On a vehicle driven by a rear wheel of a front engine, a universal joint transmission device is arranged between an output shaft of a transmission and an input shaft of a main speed reducer of a drive axle; the front engine front wheel driven vehicle omits a transmission shaft, and the universal joint is arranged between a front axle half shaft which is responsible for driving and steering and wheels.

Related art a directional ball cage universal joint, such as that disclosed in publication No. CN101705971A, changes a circular motion into an over-the-plane intermittent motion. The working position is on the horizontal intersecting surface between the two shafts, and is a common line formed by intersecting two horizontal planes, and the common line passes through the circle center and is perpendicular to the radius, so that the common line (or the diameter line perpendicular to the circle center) can keep static unchanged in the dynamic state when the shafts at the two ends of the ball cage universal joint are randomly changed, and the common line has a constant speed, does not have additional load and can increase the bearing capacity.

In the above-described related art, the inventors consider that: when the universal joint is stressed to a large extent in the axial direction, the axial pressure acts on the star wheel, and the star wheel acts on the steel ball again, so that one end, located in the ball cage shell, of the universal joint is in a suspended state, the axial stress of the universal joint is large easily, and the universal joint shaft is damaged easily.

Disclosure of Invention

In order to alleviate the damage that the joint axial compression is great and produces, the purpose of this application is to provide a rzeppa universal joint.

The application provides a ball cage universal joint adopts following technical scheme:

the utility model provides a ball cage universal joint, include the ball seat, rotate set up in the ball seat a plurality of balls, set up in the ball seat with the bulb of a plurality of ball slip butt, seted up the confession in the ball seat bulb wobbling rotates the chamber, the spout has been seted up in the bulb, it is provided with the slip butt piece to slide in the spout, still be equipped with in the spout with the spring that the slip butt piece supported out the bulb, it is equipped with the circular arc inner wall with the slip butt piece towards the chamber wall of bulb to rotate the chamber.

Through adopting above-mentioned technical scheme, when the universal joint axial direction received pressure great, axial direction's pressure acted on the bulb for the bulb receives towards the pressure of circular arc inner wall when sliding the butt with the ball, and then makes the butt that slides piece slip butt on circular arc inner wall, makes the sliding connection piece receive the cushioning effect of spring, cushions with the axial pressure that receives the bulb. Consequently through setting up spring and slip butt spare, utilize the spring to act on the slip butt spare for slip butt spare and circular arc inner wall slip butt to cushion the axial pressure that the bulb received, and play the effect of support to the bulb, thereby alleviate the great and damage that produces of universal joint axial pressurized.

Optionally, the sliding abutting part comprises a sliding column sliding in the sliding groove, and one end of the sliding column, far away from the spring, is a smooth arc surface abutting against the inner wall of the arc.

Through adopting above-mentioned technical scheme, when the bulb received axial pressure great, the axial pressure that the bulb received made the traveller to slide the butt in circular arc inner wall to the traveller is under the support of spring, makes the traveller slide the butt receive the buffering of spring in the circular arc inner wall simultaneously, thereby is convenient for cushion the axial pressurized of bulb.

Optionally, a fixing column sleeved on the sliding column is arranged on the ball head, the fixing column rotates in the rotating cavity along with the ball head, and the sliding column slides out of the fixing column and slides and abuts against the inner wall of the arc under the action of a spring in the sliding groove.

Through adopting above-mentioned technical scheme, when the axial pressure that the bulb received is great, the spring action on the traveller for sliding butt on the circular arc inner wall behind the traveller roll-off fixed column, so that the traveller is along with bulb pivoted in-process, consolidates the slip butt of traveller on the circular arc inner wall, reduces the damage that receives when traveller and circular arc inner wall slip butt, thereby increases the life of traveller.

Optionally, one end of the sliding column located in the sliding groove is provided with a limiting block, one end of the spring is arranged on the limiting block, a through groove for the sliding column to slide is formed in the fixing column, and the limiting block is used for abutting against the limiting sliding column on the fixing column to slide away from the through groove.

Through adopting above-mentioned technical scheme, when installing the bulb in the ball seat, through the spring butt on the stopper to make stopper butt in the fixed column, with the logical groove of one end roll-off of traveller, and the stopper is at the effect lower restriction traveller of stopper break away from the fixed column, thereby be convenient for behind the traveller roll-off fixed column all the time with circular arc inner wall slip butt.

Optionally, one side of the ball head, which faces away from the sliding column, is coaxially connected with a driving shaft, one end of the driving shaft, which is far away from the ball head, is coaxially connected with a driven shaft, and the driven shaft is provided with a bolt in threaded connection with the driving shaft.

Through adopting above-mentioned technical scheme, when changing the driving shaft and the driven shaft and connecting, through twisting the bolt on the action driven shaft for the coaxial coupling of driving shaft and driven shaft is relieved. Until the replaced driven shaft and the replaced driving shaft are coaxially connected, the driving shaft and the replaced driven shaft are coaxially connected again by utilizing the bolt, so that the driving shaft can be conveniently detachably connected with different driven shafts.

Optionally, a spline is arranged on the driven shaft, and a key slot for inserting the spline is formed in one end, far away from the ball head, of the driving shaft.

Through adopting above-mentioned technical scheme, when carrying out bolted connection with driving shaft and driven shaft, insert the epaxial keyway of driving with the spline on the driven shaft to strengthen the coaxial coupling between driving shaft and the driven shaft, reduce the rotation each other between driving shaft and the driven shaft, thereby strengthen driving shaft and driven shaft coaxial coupling's steadiness.

Optionally, the bolt penetrates through the driven shaft to the sliding groove, and one end, far away from the sliding column, of the spring abuts against an end face, far away from the driven shaft, of the bolt.

Through adopting above-mentioned technical scheme, when the bolt with different length with driving shaft and driven shaft coaxial coupling, the bolt of different length passes and stretches into in the driving shaft behind the driven shaft to make the bolt keep away from the terminal surface butt of driven shaft in the spring, in order to extrude the spring after, with the one end roll-off fixed column of traveller. Consequently through setting up the bolt in the spout for the terminal surface that the driven shaft was kept away from to the bolt carries out the butt to the spring, so that the bolt of different length extrudees the spring, thereby is convenient for adjust the elasticity of spring in the spout.

Optionally, a ball groove for rotating the ball head is formed in the ball seat, and a retainer for limiting the ball to be separated from the ball groove is arranged in the ball groove.

Through adopting above-mentioned technical scheme, when the bulb in the ball seat internal rotation, the bulb slides the butt in the ball for the ball is in the ball inslot rotation, and the pivoted in-process ball is located the ball inslot all the time under the spacing of retainer, thereby improves the steadiness of bulb in the ball seat internal rotation.

In summary, the present application includes at least one of the following beneficial technical effects:

by arranging the spring and the sliding abutting part, the spring acts on the sliding abutting part, so that the sliding abutting part is in sliding abutting contact with the arc inner wall, the axial pressure on the ball head is buffered, and the ball head is supported, and the damage caused by the large axial pressure on the universal joint is reduced;

by arranging the sliding column and the fixed column, the sliding column is in sliding butt joint with the inner wall of the circular arc and is simultaneously buffered by the spring, the axial compression of the ball head is buffered, and the sliding butt of the sliding column on the inner wall of the circular arc is reinforced in the process that the sliding column rotates along with the ball head, so that the damage to the sliding butt of the sliding column and the inner wall of the circular arc is reduced, and the service life of the sliding column is prolonged;

through the arrangement of the spline and the key groove, the driving shaft and the driven shaft are detachably connected by using the bolt, so that the coaxial connection stability of the driving shaft and the driven shaft is enhanced, and the driving shaft can be detachably connected with different driven shafts conveniently;

through setting up the bolt in the spout for the terminal surface that the driven shaft was kept away from to the bolt carries out the butt to the spring, so that the bolt of different length extrudees the spring, thereby is convenient for adjust the elasticity of spring in the spout.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present application.

Description of reference numerals: 1. a ball seat; 11. a rotation chamber; 111. a circular inner wall; 12. a ball groove; 121. a ball bearing; 122. a holder; 2. a ball head; 21. a drive shaft; 211. a keyway; 22. a chute; 23. a sliding abutting piece; 231. a traveler; 232. a limiting block; 24. fixing a column; 241. a through groove; 25. a spring; 3. a driven shaft; 31. a spline; 32. a bolt; 33. and (7) installing a cavity.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a rzeppa universal joint.

Referring to fig. 1, the universal joint includes ball seat 1, driving shaft 21, and the one end integrated into one piece of driving shaft 21 has bulb 2, and the swingable installation of bulb 2 is in ball seat 1, and the one end that driving shaft 21 kept away from bulb 2 can be dismantled and be connected with driven shaft 3.

In the following, the swingable installation relationship between the ball head 2 and the ball seat 1 is explained as follows, specifically, a rotation cavity 11 for swinging the ball head 2 is formed in the ball seat 1, and the rotation cavity 11 is hemispherical. Ball 121 that is located 2 a week of bulb is installed in the rotation of ball seat 1, and ball 121 along 2 circumference direction evenly distributed of bulb to make ball 121 wrap up bulb 2, make behind bulb 2 and the sliding butt of ball 121 swing in rotating chamber 11.

Offer in the ball seat 1 and supply ball 121 pivoted ball groove 12, ball groove 12 intercommunication rotates chamber 11, and ball seat 1 internal fixation has the holder 122 of ball 121 restriction in ball groove 12, and then restricts ball 121 and breaks away from bulb 2 for ball 121 can slide the butt with bulb 2 all the time, so that bulb 2 swings in rotating chamber 11.

In order to solve the problem that the universal joint is axially stressed greatly and is easily damaged, and finally the effect of reducing the damage is achieved, in the embodiment, the sliding groove 22 is formed in the ball head 2 along the axis direction of the driving shaft 21, and one end, far away from the driven shaft 3, of the sliding groove 22 penetrates through the ball head 2. A sliding abutting piece 23 is arranged in the sliding groove 22 in a sliding mode, a spring 25 abutting against the sliding abutting piece 23 is arranged in the sliding groove 22, and the spring 25 acts on the sliding abutting piece 23 to enable the sliding abutting piece 23 to extend out of the ball head 2.

The arc inner wall 111 is arranged on the cavity wall of the rotating cavity 11 facing the ball head 2, the arc inner wall 111 and one end of the sliding abutting part 23, which is exposed out of the ball head 2, are in sliding abutting connection, so that when the axial pressure of the ball head 2 is large, the sliding abutting part 23 is in sliding abutting connection with the arc inner wall 111, the sliding abutting part 23 is buffered through the spring 25, and meanwhile, the sliding abutting part 23 supports the ball head 2, so that the damage caused by the large axial pressure of the universal joint is reduced.

The sliding abutting part 23 is a sliding column 231, a fixing column 24 sleeved outside the sliding column 231 is integrally formed on the side wall of the ball head 2 close to the arc inner wall 111, a through groove 241 for the sliding column 231 to slide out is formed in the fixing column 24, the through groove 241 is communicated with the sliding groove 22, and the caliber of the through groove 241 is smaller than that of the sliding groove 22. One end of the sliding column 231 which is pushed by the spring 25 to slide out of the fixed column 24 is a smooth cambered surface, the hardness of the sliding column 231 is smaller than that of the ball seat 1, and the wear resistance of the sliding column 231 is lower than that of the ball seat 1. The sliding friction force generated when the sliding column 231 slides and abuts against the arc inner wall 111 is reduced, and the fixing column 24 can also support the sliding column 231 when the sliding column 231 rotates along with the ball head 2.

The one end fixedly connected with stopper 232 that traveller 231 is located the spout 22, stopper 232 slides in spout 22, and the one end that the driven shaft 3 was kept away from to spring 25 butts on stopper 232 to act on stopper 232 through spring 25, when making stopper 232 and fixed column 24 butt, the smooth one end of traveller 231 roll-off from fixed column 24, in order to restrict the whole logical groove 241 that breaks away from of traveller 231.

The driven shaft 3 is provided with a bolt 32 along the axial direction, the driven shaft 3 is provided with a mounting cavity 33 for the bolt 32 to penetrate, and the bolt 32 penetrates through the driving shaft 21 and extends towards the ball head 2. The bolt 32 is screwed into the driving shaft 21 to coaxially connect the driving shaft 21 and the driven shaft 3 by the screw-coupling of the bolt 32.

The peripheral side wall of the driven shaft 3 is provided with a spline 31, and one end of the driving shaft 21, which is far away from the ball head 2, is provided with a key groove 211 for inserting the spline 31, so that the stability of the coaxial connection between the driving shaft 21 and the driven shaft 3 is enhanced. The bolt 32 penetrates through the driving shaft 21 and extends into the sliding groove 22, and one end, far away from the limiting block 232, of the spring 25 abuts against the end face, located in the sliding groove 22, of the bolt 32, so that the bolts 32 with different lengths are screwed into the driving shaft 21 to adjust the elastic force of the spring 25. Simultaneously through unscrewing bolt 32 from installation cavity 33, remove the back with driving shaft 21 and driven shaft 3 coaxial coupling for bolt 32 breaks away from spout 22, in order to open spout 22, makes spring 25 follow the interior roll-off of spout 22, thereby is convenient for stopper 232, traveller 231, spring 25 take out from bulb 2 and driving shaft 21 together and change.

The implementation principle of the rzeppa universal joint in the embodiment of the application is as follows: when the driven shaft 3 and the driving shaft 21 are coaxially connected, the spline 31 is inserted into the key groove 211, and the bolt 32 is screwed to coaxially connect the driving shaft 21 and the driven shaft 3. Then, the bolt 32 is screwed into the sliding slot 22 to press the spring 25, so that the spring 25 is compressed and pushes the stop block 232 to drive the sliding column 231 to slide out of the fixed column 24. The smooth end of the sliding column 231 is in sliding contact with the arc inner wall 111, so that the sliding column 231 rotates on the arc inner wall 111 along with the rotation of the ball head 2, the axial pressure on the ball head 2 is buffered under the action of the spring 25, the ball head 2 is supported, and the damage caused by the large axial pressure of the universal joint is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.