Coupling assembly

Abstract

The coupling assembly comprises a first coupling and a second coupling which are identical in structure, each of the first coupling and the second coupling comprises a base plate, a plurality of connecting claws are evenly arranged on one side face of each base plate at intervals, and rubber parts are arranged on the two sides of each connecting claw; when the first coupler and the second coupler are assembled, the connecting claws of the first coupler are inserted into cavities between every two adjacent connecting claws on the second coupler, and the rubber parts of the first coupler are tightly matched with the rubber parts of the second coupler. According to the utility model, the two couplings are designed to be identical, so that the manufacturing cost is reduced; and the rubber part and the coupler are manufactured into a whole, so that the assembly problem between the rubber part and the coupler is avoided, and the NVH problem is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting pieces, in particular to a coupling assembly. Background Art

[0002] like Figure 1-2 As shown, there are three different connecting elements between the existing wheel box and the motor, including two different couplings (motor side coupling 1', worm side coupling 2') and a connecting piece 3'. The difference between the two couplings is that one connects the worm and the other connects the motor shaft, and the structures of the two couplings are also different. There is a connecting piece 3 made of rubber material between the two couplings, which is used to transmit the motor torque to the worm. During the manufacturing process, sometimes there will be problems with unqualified assembly between the three connecting elements, which will lead to system and NVH problems. In addition, the three connecting elements need to be manufactured separately, which is costly.

[0003] Therefore, it is necessary to design a coupling assembly that can reduce costs and improve NVH issues. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a coupling assembly that can reduce costs and improve NVH problems.

[0005] The technical solution of the utility model provides a coupling assembly, comprising a first coupling and a second coupling of two identical structures, wherein the first coupling and the second coupling both comprise a chassis, a side surface of the chassis is evenly spaced with a plurality of connecting claws, and both sides of the connecting claws are provided with rubber pieces;

[0006] When the first coupling is assembled with the second coupling, the connecting claw of the first coupling is inserted into the cavity between two adjacent connecting claws on the second coupling, and the rubber member of the first coupling is tightly matched with the rubber member of the second coupling.

[0007] Furthermore, the chassis is disc-shaped.

[0008] Furthermore, a through hole is opened in the center of the chassis, and a plurality of connecting claws are radially arranged around the through hole.

[0009] Furthermore, a boss is provided around the through hole on the other side surface of the chassis, and a plurality of reinforcing ribs are connected between the boss and the edge of the chassis.

[0010] Furthermore, an inner gear ring is provided on the inner wall of the through hole.

[0011] Furthermore, the connecting claw protrudes axially from the chassis, and a cross-section of the connecting claw along a direction parallel to the chassis is rectangular.

[0012] Furthermore, the rubber piece is wedge-shaped, and the cross-sectional area along the axial direction gradually decreases from the edge of the chassis toward the center of the chassis.

[0013] Furthermore, the chassis and the connecting claw are integrally formed.

[0014] Furthermore, the chassis and the connecting claws are made of nylon PA6+50% glass fiber composite material.

[0015] Furthermore, one connecting claw and the two connected rubber pieces together form a clamping block, and the cavity is formed between adjacent clamping blocks, and the shape and size of the cavity are the same as those of the clamping block.

[0016] After adopting the above technical solution, the following beneficial effects are achieved:

[0017] In the utility model, the two couplings are designed to be completely identical, thereby reducing the manufacturing cost; and the rubber member and the coupling are made into a whole, thereby avoiding the assembly problem between the rubber member and the coupling, which is beneficial to improving the NVH problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0019] Figure 1 It is an exploded view of the two existing couplings and the connecting parts from one perspective;

[0020] Figure 2 It is an exploded view of another perspective of the two existing couplings and the connecting parts;

[0021] Figure 3 It is a schematic diagram of a coupling assembly before installation in one embodiment of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the first coupling in one embodiment of the utility model.

[0023] Reference table of reference numerals:

[0024] First coupling 1: chassis 11, connecting claw 12, rubber member 13, through hole 14, cavity 17

[0025] The second coupling 2 includes a chassis 21 , a connecting claw 22 , a rubber member 23 , a through hole 24 , a boss 25 , a reinforcing rib 26 , and a cavity 27 . DETAILED DESCRIPTION

[0026] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0027] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0028] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0029] In some embodiments of the present invention, Figure 3 As shown, the coupling assembly includes two first couplings 1 and second couplings 2 of the same structure, the first coupling 1 and the second coupling 2 both include a chassis, a side of the chassis is evenly spaced with a plurality of connecting claws, and both sides of the connecting claws are provided with rubber parts;

[0030] When the first coupling 1 and the second coupling 2 are assembled, the connecting claw of the first coupling 1 is inserted into the cavity between two adjacent connecting claws on the second coupling 2, and the rubber part of the first coupling 1 and the rubber part of the second coupling 2 are tightly matched.

[0031] Specifically, Figure 3 As shown, the first coupling 1 includes a chassis 11, a connecting claw 12 and a rubber member 13. The chassis 11 is disc-shaped, and five connecting claws 12 are evenly spaced on one side surface. A rubber member 13 is provided on each side surface of each connecting claw 12. One connecting claw 12 and two rubber members 13 form a block, and a cavity 17 is formed between adjacent blocks.

[0032] The second coupling 2 includes a chassis 21, a connecting claw 22 and a rubber member 23. The chassis 21 is disc-shaped, and five connecting claws 22 are evenly spaced on one side. A rubber member 23 is provided on each side of each connecting claw 22. A connecting claw 22 and two rubber members 23 form a block, and a cavity 27 is formed between adjacent blocks.

[0033] When assembling the two couplings, they are first axially aligned, then rotated relative to each other at a certain angle so that the block of one coupling is aligned with the cavity 17 of the other coupling, and then the blocks of the two couplings are inserted into the cavity 17 of the relative coupling. After assembly, the rubber member 13 of the first coupling 1 and the rubber member 23 of the second coupling 2 are tightly matched, and the rubber member acts as a damping element and can reduce the noise when the coupling assembly is working.

[0034] The first coupling 1 and the second coupling 2 are the same in structure, shape and size, so they can be connected to the motor or the worm gear at will. The coupling assembly is reduced from the existing three components to only one component, which greatly reduces the manufacturing cost; and the rubber part and the coupling are made into a whole, avoiding the assembly problem between the rubber part and the coupling, which is conducive to improving NVH problems.

[0035] Furthermore, if Figure 4 As shown, taking the first coupling 1 as an example, a through hole 14 is opened at the center of the chassis 11 , and five connecting claws 12 are radially arranged around the through hole 14 .

[0036] Five cavities 17 are formed between adjacent connecting claws 12 for cooperating with the clamping blocks on the second coupling 2 .

[0037] Optionally, the number of the connecting claws 12 may be other numbers, for example, 3, 4, or more than 5.

[0038] Furthermore, if Figure 3 As shown, taking the second coupling 2 as an example, a boss 25 is provided around the through hole 24 on the other side of the chassis 21 , and a plurality of reinforcing ribs 26 are connected between the boss 25 and the edge of the chassis 21 .

[0039] The through hole 24 is used for mounting the shaft, and the boss 25 and the reinforcing rib 26 are used to increase the structural strength of the chassis 22 .

[0040] Furthermore, if Figure 3 As shown, the inner wall of the through hole 14 is provided with an inner gear ring, and the inner gear ring is used to cooperate with the shaft.

[0041] Furthermore, if Figure 4 As shown, the connecting claw 12 protrudes axially from the bottom plate 11, and the cross section of the connecting claw 12 along the direction parallel to the bottom plate 11 is rectangular.

[0042] Furthermore, if Figure 4 As shown, the rubber member 13 is wedge-shaped, and the cross-sectional area along the axial direction gradually decreases from the edge of the chassis 11 toward the center of the chassis 11.

[0043] The block composed of a connecting claw 12 and two rubber pieces 13 is similar in shape to a sector block, and the shape and size of the cavity 17 are the same as those of the sector block, so that the sector block can be exactly inserted into the cavity 17 .

[0044] Optionally, the size of the clamping block may be slightly larger than the cavity 17, so that after the clamping block is inserted into the cavity 17, the rubber member 13 is compressed, which can increase the tightness of the fit between the two couplings.

[0045] Furthermore, the chassis and the connecting claws are integrally formed.

[0046] Preferably, the chassis and the connecting claws are made of nylon PA6+50% glass fiber composite material.

[0047] Specifically, PA6 is a nylon material with good mechanical strength, stiffness, toughness and wear resistance, and is often used in mechanical structural parts. GF50 (50% glass fiber composite material) represents 50% glass fiber content, and the purpose of adding glass fiber is to enhance the mechanical properties of the material. However, the greater the percentage of glass fiber, the greater the strength of the material, but the toughness will become worse. By mixing PA6 and GF50 together, a new material with both the advantages of nylon and the characteristics of reinforced glass fiber can be obtained. This material is usually used in automotive parts or other fields that require enhanced mechanical properties.

[0048] The utility model designs the two couplings to be completely identical, thereby reducing the manufacturing cost; and the rubber member and the coupling are made into a whole, thereby avoiding the assembly problem between the rubber member and the coupling, and being conducive to improving the NVH problem.

[0049] The above description is only the principle and preferred embodiment of the utility model. It should be pointed out that for ordinary technicians in this field, on the basis of the principle of the utility model, several other variations can be made, which should also be regarded as the protection scope of the utility model.

Claims

1. A coupling assembly, characterized in that: It comprises a first coupling and a second coupling of two identical structures, wherein the first coupling and the second coupling both comprise a chassis, a side surface of the chassis is evenly provided with a plurality of connecting claws, and both sides of the connecting claws are provided with rubber parts; When the first coupling is assembled with the second coupling, the connecting claw of the first coupling is inserted into the cavity between two adjacent connecting claws on the second coupling, and the rubber member of the first coupling is tightly matched with the rubber member of the second coupling.

2. The coupling assembly according to claim 1, characterized in that: The bottom plate is in the shape of a disc.

3. The coupling assembly according to claim 2, characterized in that: A through hole is opened at the center of the chassis, and a plurality of connecting claws are radially arranged around the through hole.

4. The coupling assembly according to claim 3, characterized in that: A boss is provided around the through hole on the other side of the chassis, and a plurality of reinforcing ribs are connected between the boss and the edge of the chassis.

5. The coupling assembly according to claim 3, characterized in that: An inner gear ring is arranged on the inner wall of the through hole.

6. The coupling assembly according to claim 1, characterized in that: The connecting claw protrudes axially from the chassis, and a cross section of the connecting claw along a direction parallel to the chassis is rectangular.

7. The coupling assembly according to claim 6, characterized in that: The rubber piece is wedge-shaped, and its cross-sectional area along the axial direction gradually decreases from the edge of the chassis toward the center of the chassis.

8. The coupling assembly according to claim 1, characterized in that: The chassis and the connecting claw are integrally formed.

9. The coupling assembly according to claim 8, characterized in that: The chassis and the connecting claws are made of nylon PA6+50% glass fiber composite material.

10. The coupling assembly according to claim 1, characterized in that: One connecting claw and the two connected rubber pieces together form a clamping block, and the cavity is formed between adjacent clamping blocks. The shape and size of the cavity are the same as those of the clamping block.

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