Motor brush box structure, motor end cover and air suspension motor

Abstract

The utility model provides a motor brush box structure, a motor end cover and an air suspension motor, and relates to the technical field of motors, the motor brush box structure comprises an upper box body and a lower box body, the lower box body is provided with a plurality of connecting buckles, the upper box body is provided with a plurality of connecting buckle holes and locking buckles, and the connecting buckles can be installed in the connecting buckle holes; a space used for containing a carbon brush and a spring is formed between the upper box body and the lower box body, a narrowing area is arranged at the area, used for containing the spring, in the space, the cross section area of the narrowing area is smaller than that of other areas in the space, and the narrowing area is used for reducing the space for containing the spring and controlling the deformation amount of the spring. And the problems of spring jamming and breakage are prevented. The locking buckle is inserted into the locking clamping hole, so that the brush box is fixed, welding is not needed, the brush box is not prone to falling off and shifting, shifting of the carbon brush is avoided, and normal work of the motor is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor brush box structure, a motor end cover and an air suspension motor. Background Art

[0002] At present, the brush box in the motor is generally fixed by welding. The welding connection method also makes it difficult to further improve the motor assembly efficiency. During the use of the motor, due to welding, materials and other reasons, the welding position is loose and prone to falling off or offset. There are also problems such as brush box deformation during the welding process. The offset brush box causes the carbon brush to offset, which makes the motor current too large and affects the normal operation of the motor. In addition, the traditional brush box is generally an integrated full-channel opening. The position of the spring is not fixed when the carbon brush is compressed, and the spring is prone to jamming and breaking. In response to the above defects, this application is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a motor brush box structure, a motor end cover and an air suspension motor, which solves the problems of low efficiency, easy falling off and offset in the current brush box welding connection method, improves the brush box structure, and controls the spring deformation.

[0004] In order to solve the above problems, the utility model provides a motor brush box structure, comprising an upper box body and a lower box body, the lower box body is provided with a plurality of connecting clips, the upper box body is provided with a plurality of connecting clip holes and locking clips, the connecting clips can be installed in the connecting clip holes to realize the connection of the upper box body and the lower box body to form a brush box, and the locking clips are used to connect with the motor end cover; a space for accommodating carbon brushes and springs is formed between the upper box body and the lower box body, and a narrowed area is provided at the area for accommodating the spring in the space, and the narrowed area is arranged at the tail of the spring accommodating area, and the cross-sectional area of ​​the narrowed area is smaller than the cross-sectional area of ​​other areas in the space, and the other areas include the area for accommodating the movement of the carbon brushes. The setting of the narrowed area is used to reduce the space for placing the spring, control the deformation of the spring, and prevent the spring from getting stuck and breaking.

[0005] Optionally, the cross-sectional area of ​​the narrowed zone changes gradually, gradually narrowing from one end to the other end; or it can be set to change suddenly, from a wider space to a narrower space from the carbon brush setting area to the spring placement area.

[0006] Optionally, the longitudinal section of the space is trapezoidal or arrow-shaped.

[0007] Optionally, the narrowing area is formed by bending the wall of the lower box body into the space; the narrowing area can also be formed by adding a structure on the inner wall of the lower box body to occupy the space.

[0008] According to an embodiment of the present invention, the narrowed area is arranged at the rear position of the space.

[0009] According to an embodiment of the present invention, the upper box body is a plate-shaped structure, which is easy to process and forms a box body with the lower box body.

[0010] According to an embodiment of the present invention, the connecting buckle adopts a bending structure. After the connecting buckle is inserted into the connecting buckle hole, it is bent to achieve fixation, which facilitates installation and improves the fixing effect.

[0011] Optionally, the connecting buckles and connecting buckle holes are provided in one to four groups.

[0012] Optionally, the locking buckles are provided in one to four groups.

[0013] A motor end cover comprises an end cover body and the above-mentioned motor brush box structure. The end cover body is provided with a plurality of locking holes, and the locking holes are used to cooperate with locking buckles.

[0014] An air suspension motor comprises the above-mentioned motor end cover.

[0015] A motor includes a motor used on an air suspension and other motors, wherein the motor is provided with the above-mentioned motor brush box structure.

[0016] The beneficial effect of the present invention is that by providing a narrowed area in the brush box, when the carbon brush contracts, the compressed spring is completely or partially located in the narrowed area, thereby limiting the deformation of the spring and controlling the bending deformation of the spring to be within a reasonable range, avoiding the problem of spring jamming and breakage, and ensuring the normal operation of the motor. By providing a locking clip on the upper box body, the locking clip is inserted into the locking clip hole during assembly to fix the brush box without welding, avoiding damage or deformation of the brush box during the welding process, and improving the installation efficiency of the brush box. The clip connection method is tight and stable, and the brush box is not easy to fall off or shift, which also avoids the shift of the carbon brush and ensures the normal operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the motor end cover;

[0019] Figure 2 This is a schematic diagram of the motor brush box structure breakdown;

[0020] Figure 3 It is the overall schematic diagram of the motor brush box structure;

[0021] In the figure: motor brush box structure-1, upper box body-11, lower box body-12, connecting buckle hole-13, locking buckle-14, connecting buckle-15, space-16, narrowing area-17, end cover body-2, inductor-3, braided copper wire buckle-4, inductor buckle-5, braided copper wire 6, carbon brush-7. DETAILED DESCRIPTION

[0022] The following description is intended only to disclose the present invention and to enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0023] A motor brush box structure, such as Figure 2 、 Figure 3 , including an upper box body 11 and a lower box body 12.

[0024] Three groups of connecting buckle holes 13 and three groups of locking buckles 14 are provided on the upper box body 11. The upper box body 11 is a plate-shaped structure, which is convenient for processing. The connecting buckle holes 13 are set on the plate surface, and the locking buckles 14 are set on both sides of the plate and bent downward. A barb structure is provided on the locking buckle 14, which is inserted into the locking buckle hole 21 on the end cover body 2 to achieve a stable connection.

[0025] Three groups of connecting buckles 15 are provided on the lower box body 12. The connecting buckles 15 can be installed in the connecting buckle holes 13. The connecting buckles 15 and the connecting buckle holes 13 can be set to be snap-fitted, or the connecting buckles 15 can be inserted into the connecting buckle holes 13 and then bent to achieve fixation, which facilitates installation and improves the fixing effect.

[0026] The upper box body 11 and the lower box body 12 are connected to form a brush box. The split brush box is convenient for the installation of internal components during assembly. A space 16 for accommodating carbon brushes and springs is formed between the upper box body 11 and the lower box body 12. A narrowed area 17 is provided in the area of ​​the space 16 for accommodating the spring.

[0027] The narrowed area 17 is arranged at the tail of the spring accommodating area and also at the tail position of the space 16. The cross-sectional area of ​​the narrowed area 17 is smaller than the cross-sectional area of ​​other areas in the space 16. The cross-sectional direction refers to the direction perpendicular to the longitudinal axis of the brush box. The setting of the narrowed area 17 is used to reduce the space for placing the spring, control the deformation of the spring, and prevent the spring from getting stuck and breaking.

[0028] When the carbon brush 7 contracts, the compressed spring is at least partially in the narrowed area 17, thereby limiting the non-axial deformation of the spring, controlling the bending deformation of the spring within a reasonable range, avoiding the problems of spring jamming and breakage, and ensuring the normal operation of the motor.

[0029] In this embodiment, the cross-sectional area of ​​the narrowing zone 17 changes gradually, gradually narrowing from one end to the other. The narrowing effect is achieved by bending the wall of the lower box body 12 into the space 16, and the longitudinal section of the space 16 finally formed is a trapezoid.

[0030] A motor end cover, such as Figure 1 、 Figure 2 , including the end cover body 2, the above-mentioned motor brush box structure 1, carbon brushes 7, braided copper wire 6 and inductor 3. The end cover body 2 is provided with a plurality of locking card holes 21, which are used to cooperate with the locking card holes 14. During assembly, the lower box body 12 is installed on the end cover body 2, and then the upper box body 11 is installed. The locking card 14 of the upper box body 11 is inserted into the locking card hole 21 to fix the brush box. No welding is required, which avoids damage or deformation of the brush box during the welding process, improves the installation efficiency of the brush box, and thus helps to improve the overall assembly efficiency of the motor. The buckle connection method is tight and stable, and the brush box is not easy to fall off or shift, which also avoids the shift of the carbon brush and ensures the normal operation of the motor.

[0031] The end cover body 2 is also provided with a braided copper wire buckle 4 and an inductor buckle 5 for positioning and fixing the positions of the inductor 3 and the braided copper wire 6.

[0032] An air suspension motor comprises the above-mentioned motor end cover or the above-mentioned motor brush box structure.

[0033] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations and modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A motor brush box structure, characterized by: The invention comprises an upper box body (11) and a lower box body (12), wherein the lower box body (12) is provided with a plurality of connecting buckles (15), and the upper box body (11) is provided with a plurality of connecting buckle holes (13) and a locking buckle (14), wherein the connecting buckles (15) can be installed in the connecting buckle holes (13), and the locking buckle (14) is used to connect with the motor end cover; a space (16) for accommodating a carbon brush and a spring is formed between the upper box body (11) and the lower box body (12), and a narrowing area (17) is provided at an area for accommodating the spring in the space (16), and the cross-sectional area of ​​the narrowing area (17) is smaller than the cross-sectional area of ​​other areas in the space (16).

2. The motor brush box structure according to claim 1, characterized in that: The cross-sectional area of ​​the narrowing zone (17) changes gradually, gradually narrowing from one end to the other.

3. The motor brush box structure according to claim 2, characterized in that: The narrowing area (17) is formed by the wall of the lower box body (12) bending into the space (16).

4. The motor brush box structure according to any one of claims 1 to 3, characterized in that: The narrowing area (17) is arranged at the tail end of the space (16).

5. The motor brush box structure according to any one of claims 1 to 3, characterized in that: The upper box body (11) is a plate-shaped structure.

6. The motor brush box structure according to claim 5, characterized in that: The connecting buckle (15) adopts a bending structure, and the connecting buckle (15) is bent after being inserted into the connecting buckle hole (13) to achieve fixation.

7. The motor brush box structure according to claim 5, characterized in that: The connecting buckles (15) and the connecting buckle holes (13) are each provided in three groups.

8. The motor brush box structure according to claim 5, characterized in that: The locking buckles (14) are provided in three groups.

9. A motor end cover, characterized in that: The motor brush box structure comprises an end cover body (2) and any one of claims 1 to 8, wherein the end cover body (2) is provided with a plurality of locking holes (21), and the locking holes (21) are used to cooperate with the locking buckles (14).

10. An air suspension motor, characterized in that: The invention comprises the motor end cover as claimed in claim 9.

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