Combined starlike sleeve

Abstract

The utility model belongs to the technical field of star-shaped sleeves, and particularly relates to a combined star-shaped sleeve which comprises a universal joint, a plurality of star-shaped sleeves and a plurality of star-shaped sleeves. One end of the connecting sleeve body is arranged in the assembling cavity in a bulb shape, the other end of the connecting sleeve body extends to the outer side of the assembling cavity in a columnar shape, and a shaft hole is formed in the connecting sleeve body and penetrates through the two ends of the connecting sleeve body; the movable sleeve body is arranged between the connecting sleeve body and the assembling cavity, a strip-shaped ball groove hole is formed in the wall surface of the movable sleeve body, a ball is arranged in the ball groove hole, and the ball is in sliding fit with the wall surface of the assembling cavity and the peripheral surface of the connecting sleeve body; and the protective lining assembly comprises a liner and an annular frame, the annular frame is arranged on the wall face of the assembling cavity, the liner is arranged on the matching face between the annular frame and the assembling cavity, and the protective lining assembly forms a closing opening at the end opening of the assembling cavity.

Description

Technical Field

[0001] This utility model belongs to the field of star-shaped sleeve technology, and particularly relates to a combined star-shaped sleeve. Background Technology

[0002] The star-shaped sleeve is the core component of the ball-cage constant velocity universal joint, mainly used in the transmission system of automobiles, where it plays a key role in power transmission.

[0003] Existing star-shaped sleeves are prone to wear and tear during long-term use, resulting in frequent maintenance or replacement, which greatly increases the user's operating costs. Therefore, we have specially designed a modular star-shaped sleeve. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a combined star-shaped sleeve that achieves a long service life.

[0005] In view of this, the present invention provides a combined star-shaped sleeve, comprising:

[0006] Universal joint, with an assembly cavity at one end;

[0007] The connecting sleeve has one end in a ball shape and is set inside the assembly cavity, while the other end extends out to the outside of the assembly cavity in a column shape. The connecting sleeve has a shaft hole that extends through both ends of the connecting sleeve.

[0008] The movable sleeve is located between the connecting sleeve and the assembly cavity. The wall of the movable sleeve is provided with a strip-shaped ball groove, and the ball is provided in the ball groove. The ball slides and engages with the wall of the assembly cavity and the outer peripheral surface of the connecting sleeve.

[0009] The liner assembly includes a gasket and an annular frame. The annular frame is disposed on the wall of the assembly cavity, and the gasket is disposed on the mating surface between the annular frame and the assembly cavity. The liner assembly forms a closed end at the port of the assembly cavity.

[0010] Furthermore, the above technical solution also includes:

[0011] The ball groove is located on the ball-shaped end wall of the connecting sleeve.

[0012] Furthermore, the above technical solution also includes:

[0013] The groove is set on the wall of the assembly cavity, the gasket is set in the groove, and the end face of the ring frame protrudes from the wall of the assembly cavity.

[0014] In the above technical solution, the cross-section of the ring frame is further arc-shaped.

[0015] In the above technical solution, further, the port of the ball groove on the outside of the movable sleeve is larger than the port on the inside of the movable sleeve, and the wall surface in the length direction between the two ports of the ball groove is arc-shaped and set as an arc-shaped mating surface.

[0016] The ball bearing protrudes from the port on the outer wall of the movable sleeve and abuts against the ring frame, while the rest of the ball bearing is located in the ball bearing slot and is tangentially positioned with the arc-shaped mating surface.

[0017] Furthermore, the above technical solution also includes:

[0018] Dust cover, the dust cover is installed on the port of the assembly cavity.

[0019] In the above technical solution, the dust cover is made of rubber material, and the dust cover is cylindrical with a corrugated wall surface.

[0020] Furthermore, the above technical solution also includes:

[0021] The first limiting protrusion is provided on the universal joint wall outside the assembly cavity port;

[0022] The second limiting protrusion is provided on the end wall of the connecting sleeve extending to the outside of the assembly cavity;

[0023] The dust cover has limit grooves at both ends corresponding to the first and second limit protrusions.

[0024] The beneficial effects of this utility model are as follows: the ball bearings are directly fitted into the assembly cavity with the ring frame, thereby reducing the wear of the ball bearings and the assembly cavity. At the same time, the gasket absorbs the suction force exerted by the ball bearings on the wall of the assembly cavity, which can reduce the stress on the connecting sleeve and the universal joint. Furthermore, the gasket can solve the structural limitation during the assembly process through elastic deformation. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0028] Figure 4 This is a partial structural schematic diagram of the present invention;

[0029] The markings in the diagram are as follows: 1. Universal joint; 11. Assembly cavity; 111. Groove; 2. Connecting sleeve; 21. Shaft hole; 22. Ball groove; 3. Movable sleeve; 31. Ball groove hole; 4. Ball; 5. Liner assembly; 51. Gasket; 52. Ring frame; 521. Arc groove; 6. Dust cover; 61. Limiting groove; 71. First limiting protrusion; 72. Second limiting protrusion. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] Example 1:

[0032] This embodiment provides a combined star-shaped sleeve, including:

[0033] Universal joint 1, one end of universal joint 1 is provided with assembly cavity 11;

[0034] The connecting sleeve 2 has one end in a ball-shaped shape and is set in the assembly cavity 11, and the other end extends to the outside of the assembly cavity 11 in a column-shaped shape. The connecting sleeve 2 has a shaft hole 21 that extends through to both ends of the connecting sleeve 2.

[0035] The movable sleeve 3 is disposed between the connecting sleeve 2 and the assembly cavity 11. A strip-shaped ball groove 31 is provided on the wall surface of the movable sleeve 3. A ball 4 is disposed in the ball groove 31. The ball 4 slides and engages with the wall surface of the assembly cavity 11 and the outer peripheral surface of the connecting sleeve 2.

[0036] Liner assembly 5 includes a liner 51 and an annular frame 52. The annular frame 52 is disposed on the wall of the assembly cavity 11, and the liner 51 is disposed on the mating surface between the annular frame 52 and the assembly cavity 11. The liner assembly 5 forms a closed end at the port of the assembly cavity 11.

[0037] As can be seen from this embodiment, a combined star-shaped sleeve includes a universal joint 1, a connecting sleeve body 2, a movable sleeve body 3, and a protective liner assembly 5;

[0038] A mounting cavity 11 is provided on one end face of the universal joint 1. The connecting sleeve 2 is connected to the mounting cavity 11. One end of the connecting sleeve 2 is ball-shaped and connected to the mounting cavity 11. The other end of the connecting sleeve 2 is cylindrical and extends to the outside of the mounting cavity 11. The ball-shaped end of the universal joint 1 is milled to form an end face. A shaft hole 21 is provided on the end face. The shaft hole 21 passes through to the other end face of the connecting sleeve 2.

[0039] The movable sleeve 3 is spherical and hollow inside. Furthermore, the movable sleeve 3 has notches milled at both ends, and the connecting sleeve 2 is connected to the movable frame body through the notches. Furthermore, the outer circumferential surface of the movable sleeve 3 is provided with a long strip-shaped ball groove 31, and a ball 4 is placed in the ball groove 31.

[0040] During the assembly process, the ball 4 is placed into the ball groove 31, and then one end of the ball head of the connecting sleeve 2 is tightly connected to the movable sleeve through the notch at one end of the movable sleeve 3. At this time, the ball 4 is limited and fixed between the connecting sleeve 2 and the movable sleeve 3. Finally, the assembly of the connecting sleeve, the movable sleeve 3 and the ball 4 is assembled into the assembly cavity 11. The ball 4 is connected to the assembly cavity 11 and the connecting sleeve through the ball groove 31.

[0041] When in use, when the universal joint 1 is subjected to force, the connecting sleeve 2 rotates in the assembly cavity 11 by means of the ball bearing 4, thereby achieving the steering effect;

[0042] Furthermore, a liner assembly 5 is installed on the inner wall of the assembly cavity 11 that mates with the ball 4. The liner assembly 5 includes a pad 51 and an annular frame 52. The pad 51 is bonded to the bottom of the annular frame 52 and is bonded and fixed to the wall of the assembly cavity 11. The liner assembly 5 is installed in the assembly cavity 11, forming a closed structure at the port of the assembly cavity 11. The ball 4 is connected to the annular frame 52, thereby restricting the movement of the ball 4 and causing the wall ball 4 to leave the working range.

[0043] The ball bearing 4 is directly fitted into the assembly cavity 11 with the ring frame 52, which can reduce the wear of the ball bearing 4 and the assembly cavity 11. At the same time, the gasket 51 absorbs the suction force applied by the ball bearing 4 to the wall of the assembly cavity 11, which can reduce the stress on the connecting sleeve 2 and the universal joint 1. Furthermore, the gasket 51 can solve the structural limitation during the assembly process by elastic deformation during the assembly of the ball bearing 4.

[0044] Example 2:

[0045] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] Ball groove 22 is provided on the ball-head-shaped end wall of the connecting sleeve 2.

[0047] As can be seen from this embodiment, by providing a ball groove 22 on the wall surface of the ball-shaped end of the connecting sleeve 2, the movement of the ball 4 is limited, thereby preventing the ball 4 from sliding off the spherical wall surface of the movable sleeve 3 during use.

[0048] Example 3:

[0049] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] The groove 111 is set on the wall of the assembly cavity 11, the gasket 51 is set in the groove 111, and the end face of the ring frame 52 protrudes from the wall of the assembly cavity 11.

[0051] As can be seen from this embodiment, a groove 111 is formed on the inner side of the assembly cavity 11 where it connects with the ball 4. The groove 111 is used to connect the pad 51. After the ring frame 52 is connected to the pad 51, it will protrude from the wall of the assembly cavity 11, thereby forming a closed-end limiting structure, which facilitates the connection sleeve 2 and the movable sleeve 3 to clamp the ball 4.

[0052] Example 4:

[0053] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0054] An arc-shaped groove 521 is provided on the side wall of the ring frame 52 that mates with the ball bearing 4.

[0055] As can be seen from this embodiment, by providing an arc-shaped groove 521 on the side wall where the ring frame 52 and the ball 4 cooperate, the ring frame 52 and the ball 4 can be matched together in a limiting manner.

[0056] Example 5:

[0057] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] The port of the ball groove 31 located on the outside of the movable sleeve 3 is larger than the port located on the inside of the movable sleeve 3, and the wall surface in the length direction between the two ports of the ball groove 31 is arc-shaped and set as an arc-shaped mating surface.

[0059] Among them, the ball 4 is exposed from the port on the outer wall of the movable sleeve 3 and abuts against the ring frame 52, and the rest of the ball 4 is in the ball groove 31 and is tangential to the arc-shaped mating surface.

[0060] As can be seen from this embodiment, the wall surface between the ports on both sides of the movable sleeve 31 is an arc-shaped mating surface and is tangential to the ball 4. Furthermore, the port on the outer circumferential surface of the movable sleeve 3 is smaller than the port on the inner circumferential surface of the movable sleeve 3.

[0061] After the ball 4 is tangential to the arc-shaped mating surface, it is limited to the ball groove 31.

[0062] Example 6:

[0063] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] Dust cover 6 is installed on the port of assembly cavity 11.

[0065] As can be seen from this embodiment, by setting a dust cover 6 to protect the mating surfaces between the connecting sleeve and the assembly cavity 11, the occurrence of external dust entering the assembly cavity 11 and affecting the mating effect between the connecting sleeve and the assembly cavity 11 can be effectively reduced.

[0066] Example 7:

[0067] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] The dust cover 6 is made of rubber material, and the main body is cylindrical with a corrugated wall surface.

[0069] As can be seen from this embodiment, the dust cover 6 is cylindrical and integrally injection molded from rubber material. Furthermore, during the molding process, the side wall surface of the dust cover 6 is wavy.

[0070] The cylindrical dust cover 6, made of rubber material, can move along with the connecting sleeve 2 during use due to its own elasticity and corrugated wall surface, thereby improving the protective effect.

[0071] Example 8:

[0072] This embodiment provides a combined star-shaped sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] The first limiting protrusion 71 is provided on the wall of the universal joint 1 outside the port of the assembly cavity 11.

[0074] The second limiting protrusion 72 is provided on the end wall of the connecting sleeve 2 extending to the outside of the assembly cavity 11;

[0075] Among them, the dust cover 6 has a limiting groove 61 at both ends corresponding to the first limiting protrusion 71 and the second limiting protrusion 72.

[0076] As can be seen from this embodiment, by setting a first limiting protrusion 71 on the outside of the assembly port and setting a second limiting protrusion 72 on the connecting sleeve 2, and at the same time setting a limiting groove 61 on the inner side wall of the ports at both ends of the dust cover 6 corresponding to the first limiting protrusion 71 and the second limiting protrusion 72;

[0077] After the limiting groove 61 is connected to the first limiting protrusion 71 and the second limiting protrusion 72, the dust cover 6 is fixed to the assembly surface between the universal joint 1 and the connecting sleeve 2.

[0078] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A composite star-shaped sleeve, characterized in that it comprises: Universal joint (1), one end of which is provided with an assembly cavity (11); A connecting sleeve (2) is provided with one end in a ball-shaped shape inside the assembly cavity (11) and the other end in a column-shaped shape extending to the outside of the assembly cavity (11). A shaft hole (21) is provided on the connecting sleeve (2) and the shaft hole (21) extends through to both ends of the connecting sleeve (2). The movable sleeve (3) is disposed between the connecting sleeve (2) and the assembly cavity (11). A strip-shaped ball groove (31) is provided on the wall surface of the movable sleeve (3). A ball (4) is provided in the ball groove (31). The ball (4) slides and engages with the outer circumferential surface of the assembly cavity (11) and the connecting sleeve (2). Liner assembly (5), the liner assembly (5) includes a pad (51) and an annular frame (52), the annular frame (52) is disposed on the wall of the assembly cavity (11), and the pad (51) is disposed on the mating surface between the annular frame (52) and the assembly cavity (11), the liner assembly (5) forms a closed end at the port of the assembly cavity (11).

2. The combined star-shaped sleeve according to claim 1, characterized in that, it also... include: Ball groove (22) is provided on the ball-shaped end wall of the connecting sleeve (2).

3. The combined star-shaped sleeve according to claim 2, characterized in that, it also... include: The groove (111) is provided on the wall of the assembly cavity (11), the pad (51) is provided in the groove (111), and the end face of the ring frame (52) protrudes from the wall of the assembly cavity (11).

4. A combined star-shaped sleeve according to claim 3, characterized in that, An arc groove (521) is provided on the side wall of the ring frame (52) that cooperates with the ball (4).

5. A combined star-shaped sleeve according to claim 4, characterized in that, The port of the ball groove (31) located outside the movable sleeve (3) is larger than the port located inside the movable sleeve (3), and the wall surface in the length direction between the two ports of the ball groove (31) is arc-shaped and set as an arc-shaped mating surface. Among them, the ball (4) is exposed from the port on the outer wall of the movable sleeve (3) and abuts against the ring frame (52), and the rest of the ball (4) is in the ball groove (31) and is tangential to the arc-shaped mating surface.

6. A combined star-shaped sleeve according to claim 5, characterized in that, it further includes... include: A dust cover (6) is provided on the port of the assembly cavity (11).

7. A combined star-shaped sleeve according to claim 6, characterized in that, The dust cover (6) is made of rubber material, and the dust cover (6) is cylindrical and the wall surface of the dust cover (6) is wavy.

8. A combined star-shaped sleeve according to claim 7, characterized in that, it also... include: The first limiting protrusion (71) is provided on the wall of the universal joint (1) outside the port of the assembly cavity (11); The second limiting protrusion (72) is provided on the end wall of the connecting sleeve (2) extending to the outside of the assembly cavity (11); The dust cover (6) has a limiting groove (61) at both ends corresponding to the first limiting protrusion (71) and the second limiting protrusion (72).

Images