Bidirectional limiting anti-loosening universal joint fork
By adopting ball limit and ball head structural limit design in the universal joint fork, combined with the use of tightening spring, the shaking and falling problem caused by wear of the universal joint fork connection shaft is solved, and a more stable and quiet universal shaft operation is achieved.
Patent Information
- Application Number
- CN202420906124.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The existing universal joint forks are prone to severe wear of the connecting shaft after long-term operation, resulting in shaking and falling off.
A two-way restriction anti-loosening universal joint fork is designed, and the sides of the connecting shaft are limited by the ball-head structure, and the ends of the connecting shaft are limited by the ball head structure, combining the first and second tightening springs to ensure the stability and limiting effect of the structure.
It effectively avoids shaking and falling off of the connecting shaft when it rotates, improves the operation stability and quietness of the universal shaft, and extends the service life of the universal joint fork.
Smart Images
Figure CN222823584U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of universal joint forks, in particular to a bidirectional limiting anti-loosening universal joint fork. Background Art
[0002] Universal joints are indispensable in modern transmission components. The application of universal joints can effectively transmit the transmission shafts with two intersecting axis lines. The universal joint is composed of a universal joint fork and a cross shaft, in which the universal joint fork is fixed at one end of the transmission shaft.
[0003] The existing universal joint fork has deficiencies in loosening and preventing the connecting shaft from falling off. After long-term operation, the connecting shaft is prone to severe wear and tear, and then shaking and falling off. Utility Model Content
[0004] The utility model aims to provide a bidirectional limiting anti-loosening universal joint fork which can limit the connection shaft to prevent loosening and falling off, thereby improving the running stability.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A bidirectional limiting anti-loosening universal joint fork comprises a universal joint fork body, a tube seat is integrally connected to the outer surface of the universal joint fork body, a connecting shaft passes through the two tube seats, a plurality of balls are arranged inside the tube seat, the plurality of balls are arranged in a circular array, and the balls are distributed on the outside of the connecting shaft and abut against the side surface of the connecting shaft, an outer end cover is threadedly installed on the outer end surface of the tube seat, a telescopic tube is arranged at the middle position of the inner end surface of the outer end cover, a ball head structure is arranged at the telescopic end of the telescopic tube, and the ball head structure abuts against the middle position of the end surface of the connecting shaft.
[0007] By adopting the above technical solution, the side and end of the connecting shaft can be limited, and the ball bearings can effectively improve the quietness and smoothness of the rotation of the connecting shaft.
[0008] Furthermore, a second tension spring is sleeved on the exterior of the telescopic tube.
[0009] By adopting the above technical solution, the two ends of the connecting shaft can be tightened effectively.
[0010] Furthermore, a retaining ring is provided on one side of the ball.
[0011] By adopting the above technical solution, the ball can be effectively limited.
[0012] Furthermore, an inner limit block is threadedly connected to the inner wall of the port of the pipe seat, and a first tension spring is arranged between the inner limit block and the retaining ring.
[0013] By adopting the above technical solution, the first tension spring can be used to apply a force to the retaining ring in real time, thereby ensuring the stability of the internal structure.
[0014] Furthermore, a hexagonal hole is provided on the end surface of the inner limit block.
[0015] By adopting the above technical solution, the inner limit block can be rotated flexibly and conveniently.
[0016] Furthermore, the inner limit block is located at one end of the connecting shaft, and a through hole is provided at the center axis position of the inner limit block, and the diameter of the through hole is smaller than the diameter of the connecting shaft, and the telescopic tube passes through the inside of the through hole.
[0017] By adopting the above technical solution, the inner limit block can be used to adjust the tension of the first tension spring, and at the same time, the inner limit block can perform a first limit operation on one end of the connecting shaft.
[0018] In summary, the beneficial technical effects of the utility model are:
[0019] The utility model can use the circular array of balls to limit the side of the connecting shaft, thus avoiding the shaking of the connecting shaft when rotating. At the same time, the setting of the balls improves the rotation stability of the connecting shaft while also improving the quietness of the rotation of the connecting shaft. In addition, because the ball head structure is against the center axis position of the end face of the connecting shaft, the ball head structure can limit the two ends of the connecting shaft, so that the universal joint fork has a two-way limiting structure, which avoids axial position movement when the connecting shaft rotates, further improves the stability of the universal shaft operation, and avoids the universal shaft from loosening and falling off during operation, and the stability and practicality are effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a first perspective view of the three-dimensional structure of the utility model;
[0021] Figure 2 This is a second viewing angle diagram of the three-dimensional structure of the utility model;
[0022] Figure 3 For this utility model Figure 2 Enlarged view of point A.
[0023] In the figure: 1. universal joint fork body; 2. pipe seat; 3. ball; 4. retaining ring; 5. first tension spring; 6. inner limit block; 7. outer end cover; 8. connecting shaft; 9. ball head structure; 10. second tension spring; 11. telescopic tube. DETAILED DESCRIPTION
[0024] The method of the utility model is further described in detail below in conjunction with the accompanying drawings.
[0025] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 A bidirectional limiting anti-loosening universal joint fork comprises a universal joint fork body 1, a tube seat 2 is integrally connected to the outer surface of the universal joint fork body 1, a connecting shaft 8 is passed through the two tube seats 2, a plurality of balls 3 are arranged inside the tube seat 2, the plurality of balls 3 are arranged in a circular array, and the balls 3 are distributed outside the connecting shaft 8 and abut against the side surface of the connecting shaft 8, an outer end cover 7 is threadedly installed on the outer port of the tube seat 2, a telescopic tube 11 is arranged at the middle position of the inner end surface of the outer end cover 7, a ball head structure 9 is arranged at the telescopic end of the telescopic tube 11, and the ball head structure 9 abuts against the middle position of the end surface of the connecting shaft 8, a second tension spring 10 is sleeved on the outer side of the telescopic tube 11, and the second tension spring 10 is sleeved on the outer side of the telescopic tube 11. The circular array of balls 3 can be used to limit the side of the connecting shaft 8, thereby preventing the connecting shaft 8 from shaking during rotation. At the same time, the provision of the balls 3 improves the rotation stability of the connecting shaft 8 while also improving the rotation quietness of the connecting shaft 8. Furthermore, since the ball head structure 9 is against the center axis position of the end face of the connecting shaft 8, the ball head structure 9 can limit the two ends of the connecting shaft 8, so that the universal joint fork has a two-way limiting structure, thereby preventing the connecting shaft 8 from moving in the axial position during rotation, further improving the stability of the universal joint operation, and preventing the universal joint from loosening and falling off during operation, and the stability and practicality are effectively improved.
[0026] Reference Figure 1 , Figure 2 A retaining ring 4 is provided on one side of the ball 3, and an inner limit block 6 is threadedly connected on the inner wall of the port of the tube seat 2. A first tensioning spring 5 is provided between the inner limit block 6 and the retaining ring 4, and a hexagonal hole is provided on the end face of the inner limit block 6. The inner limit block 6 is located at one end of the connecting shaft 8, and a through hole is provided at the central axis position of the inner limit block 6, and the diameter of the through hole is smaller than the diameter of the connecting shaft 8. The telescopic tube 11 runs through the inside of the through hole, wherein the retaining ring 4 can be used to limit the ball 3 to ensure the stability of the rotation of the ball 3. At the same time, the first tensioning spring 5 can apply a force to the retaining ring 4 in real time, ensuring that the retaining ring 4 can effectively limit the ball 3 in real time, and the inner limit block 6 threadedly connected to the inside of the port of the tube seat 2 can limit the end of the connecting shaft 8.
[0027] Working principle: When in use, first install the universal joint fork at the specified position. At this time, the universal joint assembled by the universal joint fork body 1 can operate. During operation, the first tensioning spring 5 applies a force to one side of the retaining ring 4 in real time, and the retaining ring 4 can limit the ball 3 in real time. At this time, the circular array of balls 3 can effectively limit the side of the connecting shaft 8, and improve the smoothness and quietness of the rotation of the connecting shaft 8. Under the limitation of the balls 3, the connecting shaft 8 will not shake when rotating. Because the ball head structure 9 is in real time against the end face of the connecting shaft 8, the second tensioning spring 10 and the telescopic tube 11 in the compressed state can make the ball head structure 9 apply a force to the end of the connecting shaft 8 in real time, so as to avoid axial position movement of the connecting shaft 8 when the universal joint is in operation, thereby improving the stability of the universal joint operation.
[0028] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A bidirectional limiting anti-loosening universal joint fork, comprising a universal joint fork body (1), characterized in that: A tube seat (2) is integrally connected to the outer surface of the universal joint fork body (1), a connecting shaft (8) is passed through between the two tube seats (2), a plurality of balls (3) are arranged inside the tube seat (2), the plurality of balls (3) are arranged in a circular array, and the balls (3) are distributed outside the connecting shaft (8) and abut against the side surface of the connecting shaft (8), an outer end cover (7) is threadedly mounted on the outer end of the port of the tube seat (2), a telescopic tube (11) is arranged at the middle position of the inner end surface of the outer end cover (7), a ball head structure (9) is arranged at the telescopic end of the telescopic tube (11), and the ball head structure (9) abuts against the middle position of the end surface of the connecting shaft (8).
2. A bidirectional limiting anti-loosening universal joint fork according to claim 1, characterized in that: A second tension spring (10) is sleeved on the exterior of the telescopic tube (11).
3. The bidirectional limiting anti-loosening universal joint fork according to claim 1, characterized in that: A retaining ring (4) is provided on one side of the ball (3).
4. A bidirectional limiting anti-loosening universal joint fork according to claim 3, characterized in that: An inner limit block (6) is threadedly connected to the inner wall of the port of the pipe seat (2), and a first tension spring (5) is arranged between the inner limit block (6) and the retaining ring (4).
5. A bidirectional limiting anti-loosening universal joint fork according to claim 4, characterized in that: The end surface of the inner limit block (6) is provided with a hexagonal hole.
6. A bidirectional limiting anti-loosening universal joint fork according to claim 4, characterized in that: The inner limit block (6) is located at one end of the connecting shaft (8), and a through hole is provided at the center axis position of the inner limit block (6), and the diameter of the through hole is smaller than the diameter of the connecting shaft (8), and the telescopic tube (11) passes through the interior of the through hole.