Connecting joint for robot

By adjusting the design of the gears and positioning plates, and combining the structure of the snap-fit ​​positioning part and the snap-fit ​​connector, the problem of insufficient stability of the robot's connecting joints under external impact was solved, achieving higher stability and impact resistance.

CN223933661UActive Publication Date: 2026-02-24BEIJING POLYTECHNIC
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Patent Information

Application Number
CN202520574963.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-28
Publication Date
2026-02-24
Estimated Expiration
2035-03-28

AI Technical Summary

Technical Problem

Existing robot joints are difficult to maintain a stable angle after being subjected to external impact, resulting in insufficient stability.

Method used

The design incorporates adjusting gears and positioning plates, along with the structure of snap-fit ​​positioning parts and snap-fit ​​connectors. Through the cooperation of polygonal holes and polygonal segments, stable engagement of the first and second connecting parts is achieved, and stability is enhanced by the use of return springs and separating springs.

Benefits of technology

It enhances the stability and impact resistance of the connecting joint after angle adjustment, ensuring that it can maintain a certain angle under external force.

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Abstract

A connecting joint for a robot comprises a first connecting part and a second connecting part, an adjusting rod is arranged on the first connecting part in a penetrating mode, an adjusting gear is arranged at the end of the adjusting rod, a positioning plate is arranged on the second connecting part, one side of the positioning plate is meshed with the adjusting gear, and a clamping positioning part is arranged at the end of the adjusting rod. And a clamping head matched with the clamping positioning part is arranged on the second connecting part. The first connecting part and the second connecting part are arranged in a matched mode through the adjusting gear and the positioning plate, the contact angle is large, the meshing effect is good, the stability effect is good due to the fact that multiple meshing teeth exist during relative movement of the first connecting part and the second connecting part, and good stability can be achieved during stability.
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Description

Technical Field

[0001] This application relates to a connecting joint for a robot. Background Technology

[0002] Robot joints are components that connect different parts, and they can have different degrees of freedom of movement depending on the moving components. One type of joint is the rotary joint, which can rotate along an axis, and the rotation angle can be limited to a specific angle or 360° as needed. The main stability of this type of joint structure is the setting of angular stability, such as whether it can achieve a good positioning effect during movement, and whether it can maintain its position after reaching a certain angle and being subjected to external impact. Utility Model Content

[0003] To address the aforementioned problems, this application proposes a connecting joint for robots, comprising a first connecting part and a second connecting part. An adjusting rod is inserted through the first connecting part, and an adjusting gear is provided at the end of the adjusting rod. A positioning plate is provided on the second connecting part, with one side of the positioning plate meshing with the adjusting gear. A snap-fit ​​positioning part is provided at the end of the adjusting rod, and a snap-fit ​​connector is provided on the second connecting part to cooperate with the snap-fit ​​positioning part. The first and second connecting parts of this application are respectively configured to cooperate with the adjusting gear and the positioning plate, resulting in a large contact angle and good meshing effect. This not only provides good stability during relative movement of the first and second connecting parts due to the numerous meshing teeth, but also ensures excellent stability when the parts are stable.

[0004] Preferably, the adjusting rod includes a rod body, a pressing head is provided on the side of the rod body away from the second connecting part, and a return spring is provided on the rod body between the pressing head and the first connecting part.

[0005] Preferably, the return spring is a conical spring.

[0006] Preferably, the length of the positioning plate is greater than the entire operating length of the adjusting rod; the snap-fit ​​positioning part includes a sleeve section that mates with the snap-fit ​​positioning part, and a release section, which is simply reduced in diameter relative to the sleeve section, is provided on the side of the sleeve section near the second connecting part. The adjusting rod body of this application achieves the fixing and opening of the first adjusting part and the second adjusting part through adjustment between the sleeve section and the release section. The sleeve section can be configured with a polygonal snap-fit ​​method or an arc-shaped clamping damping method as needed, thereby further improving the stability after adjustment based on the mating of the adjusting gear and the positioning plate.

[0007] Preferably, the snap-fit ​​connector includes a snap-fit ​​collar that cooperates with the snap-fit ​​positioning part, and the snap-fit ​​collar is fixedly connected to the second connecting part through a snap-fit ​​connecting plate.

[0008] Preferably, a separating spring is provided on the rod body between the first connecting part and the second connecting part.

[0009] Preferably, the position of the rod body corresponding to the first connecting part is a polygonal hole, and the position of the rod body corresponding to the polygonal hole is provided with a polygonal segment. The rod body of this application, through the combination of the polygonal hole and the polygonal segment, allows the rod body and the first connecting part to be movably engaged, enabling movement in the axial direction of the rod body and locking in the tangential direction, thereby serving to switch between the sleeve section and the release section.

[0010] Preferably, the positioning plate includes an arc-shaped toothed plate, which is disposed on the lateral fixing plate, and the lateral fixing plate is fixedly disposed on the side of the second connecting part.

[0011] Preferably, the first connecting part and the second connecting part are transverse connecting plates.

[0012] This application can bring the following beneficial effects:

[0013] 1. The first connecting part and the second connecting part of this application are respectively set by adjusting the gear and the positioning plate, which have a large contact angle and good meshing effect. Not only is the stability good when the first connecting part and the second connecting part move relative to each other due to the large number of meshing teeth, but it also has very good stability when it is stable.

[0014] 2. The adjusting rod body of this application fixes and opens the first adjusting part and the second adjusting part by adjusting between the sleeve section and the release section. The sleeve section can be provided with a polygonal snap-fit ​​method or an arc-shaped clamping damping method as needed, thereby further improving the stability after adjustment based on the matching of the adjusting gear and the positioning plate.

[0015] 3. The rod body of this application is configured with multiple deformable holes and polygonal segments, which allows the rod body and the first connecting part to be movably engaged. The rod body can move in the axial direction and lock in the tangential direction, thereby serving to switch between the sleeve section and the release section. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this application;

[0019] Figure 3 This is a side view of the present application. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed description, in conjunction with the accompanying drawings, will be provided.

[0021] In the first embodiment, such as Figure 1-2 As shown, a connecting joint for a robot includes a first connecting part 1 and a second connecting part 4. An adjusting rod 2 is passed through the first connecting part 1, and an adjusting gear 3 is provided at the end of the adjusting rod 2. A positioning plate 5 is provided on the second connecting part 4, and one side of the positioning plate 5 is engaged with the adjusting gear 3. A snap-fit ​​positioning part 6 is provided at the end of the adjusting rod 2, and a snap-fit ​​connector 7 is provided on the second connecting part 4 to cooperate with the snap-fit ​​positioning part 6.

[0022] In use, the locking and positioning part 6 and the locking connector 7 are disengaged by adjusting rod 2. Then, the angles of the adjusting gear 3 of the first connecting part 1 and the positioning plate 5 of the second connecting part 4 can be adjusted by external components. After the adjustment is completed, the locking and positioning part 6 and the locking connector 7 are fixed by returning adjusting rod 2. The adjusting gear 3 of the first connecting part 1 and the positioning plate 5 of the second connecting part 4 mesh, thus completing the adjustment and improving the stability of the structure.

[0023] In the second embodiment, as Figure 1-3 As shown, a connecting joint for a robot includes a first connecting part 1 and a second connecting part 4. An adjusting rod 2 is passed through the first connecting part 1, and an adjusting gear 3 is provided at the end of the adjusting rod 2. A positioning plate 5 is provided on the second connecting part 4, and one side of the positioning plate 5 is engaged with the adjusting gear 3. A snap-fit ​​positioning part 6 is provided at the end of the adjusting rod, and a snap-fit ​​connector 7 is provided on the second connecting part 4 to cooperate with the snap-fit ​​positioning part 6.

[0024] The adjusting rod 2 includes a rod body 8, with a pressing head 9 on the side of the rod body 8 away from the second connecting part 4, and a return spring 10 on the rod body 8 between the pressing head 9 and the first connecting part 1. The return spring 10 is a conical spring. The length of the positioning plate 5 is over the entire operating length of the adjusting rod 2. The snap-fit ​​positioning part 6 includes a sleeve section 12 that cooperates with the snap-fit ​​positioning part 6, and a release section 13 with a diameter that is simply reduced relative to the sleeve section 12 is provided on the side of the sleeve section 12 near the second connecting part 4. The snap-fit ​​connector 7 includes a snap-fit ​​collar 14 that cooperates with the snap-fit ​​positioning part 6, and the snap-fit ​​collar 14 is fixedly connected to the second connecting part 4 through a snap-fit ​​connecting plate 15. A separating spring 16 is provided on the rod body 8 between the first connecting part 1 and the second connecting part 4. The position of the rod body 8 corresponding to the position of the first connecting part 1 is a polygonal hole, and the position of the position of the polygonal hole on the rod body 8 is provided with polygonal segments.

[0025] The positioning plate 5 includes an arc-shaped toothed plate 17, which is disposed on a lateral fixing plate 18, which is fixedly disposed on the side of the second connecting part 4. The first connecting part 1 and the second connecting part 4 are transverse connecting plates.

[0026] In use, the locking and positioning part 6 and the locking head 7 are separated by adjusting rod 2, that is, the gap between the smaller release section 13 and the locking collar 14 is set, so that the angle of the adjusting gear 3 of the first connecting part 1 and the positioning plate 5 of the second connecting part 4 can be adjusted by external components. After the adjustment is completed, the locking and positioning part 6 and the locking head 7 are fixed by returning adjusting rod 2, that is, the sleeve section is locked or abutted with the locking collar 14, and the adjusting gear 3 of the first connecting part 1 and the positioning plate 5 of the second connecting part 4 are engaged, thus completing the adjustment and improving the stability of the structure.

[0027] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A connecting joint for a robot, characterized in that: It includes a first connecting part and a second connecting part. An adjusting rod is passed through the first connecting part and an adjusting gear is provided at the end of the adjusting rod. A positioning plate is provided on the second connecting part, and one side of the positioning plate is engaged with the adjusting gear. A snap-fit ​​positioning part is provided at the end of the adjusting rod, and a snap-fit ​​connector is provided on the second connecting part to cooperate with the snap-fit ​​positioning part.

2. A connecting joint for a robot as described in claim 1, characterized in that: The adjusting rod includes a rod body, a pressing head is provided on the side of the rod body away from the second connecting part, and a return spring is provided on the rod body between the pressing head and the first connecting part.

3. A connecting joint for a robot as described in claim 2, characterized in that: The return spring is a conical spring.

4. A connecting joint for a robot as described in claim 2, characterized in that: The length of the positioning plate is above the entire operating length of the adjusting rod; the snap-fit ​​positioning part includes a sleeve section that cooperates with the snap-fit ​​positioning part, and a release section that is simply reduced in diameter relative to the second connecting part is provided on the side of the sleeve section near the second connecting part.

5. A connecting joint for a robot as described in claim 2, characterized in that: The snap-fit ​​connector includes a snap-fit ​​collar that mates with the snap-fit ​​positioning part. The snap-fit ​​collar is fixedly connected to the second connecting part via a snap-fit ​​connecting plate.

6. A connecting joint for a robot as described in claim 2, characterized in that: A separating spring is provided on the rod body between the first connecting part and the second connecting part.

7. A connecting joint for a robot as described in claim 2, characterized in that: The rod body has a polygonal hole at the position corresponding to the first connecting part, and a polygonal segment is provided on the rod body at the position corresponding to the polygonal hole.

8. A connecting joint for a robot as described in claim 1, characterized in that: The positioning plate includes an arc-shaped toothed plate, which is disposed on a lateral fixing plate, and the lateral fixing plate is fixedly disposed on the side of the second connecting part.

9. A connecting joint for a robot as described in claim 1, characterized in that: The first connecting part and the second connecting part are horizontal connecting plates.