Motor brush box structure, motor end cover and air suspension motor
By setting up a narrowing zone and snap connection in the motor brush box, the problems of low welding connection efficiency and spring deformation are solved, and stable fixation and efficient assembly are achieved to ensure the normal operation of the motor.
Patent Information
- Application Number
- CN202411538041.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2024-12-20
AI Technical Summary
The welding connection method of existing motor brush boxes is inefficient, which can easily cause shedding and offset, and the spring is easily stuck or broken under compression, affecting the normal operation of the motor.
A motor brush box structure is designed, adopting a split design, and the connection between the upper box body and the lower box body is achieved by setting up a connecting snap and a locking snap, forming a space for accommodating the carbon brush and the spring, and setting it in the space The narrowing area controls the deformation of the spring to avoid jamming and breakage. At the same time, snap connections are used instead of welding to improve installation efficiency.
The spring deformation is restricted through the narrowing area, preventing jamming and breaking, ensuring the normal operation of the motor, and improving the fixity of the brush box through snap connections, avoiding falling off and offset, and improving the motor assembly efficiency.
Smart Images
Figure CN119171684A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of motors, and 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, and the position of the spring is not fixed when the carbon brush is compressed. The spring is prone to getting stuck or breaking. In view of the above defects, the present application is proposed. Summary of the invention
[0003] The purpose of the present invention 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 present invention 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 buckles, the upper box body is provided with a plurality of connecting buckle holes and locking buckles, the connecting buckles can be installed in the connecting buckle holes, so as to realize the connection between the upper box body and the lower box body to form a brush box, and the locking buckles 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, a narrowing zone is provided at the area for accommodating the spring in the space, the narrowing zone is arranged at the tail of the spring accommodating area, the cross-sectional area of the narrowing zone is smaller than the cross-sectional area of other areas in the space, the other areas include the area for accommodating the movement of the carbon brushes, and the setting of the narrowing zone 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; it can also be set to be a sudden change, where the carbon brush setting area to the spring placement area suddenly changes from a wider space to a narrower space.
[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 narrowing 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, and the connecting buckle is bent after passing through the connecting buckle hole 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, wherein 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 applied to an air suspension and other motors, wherein the motor is provided with the motor brush box structure.
[0016] The beneficial effect of the present invention is that by setting a narrowing area in the brush box, when the carbon brush shrinks, the compressed spring is completely or partially in the narrowing area, thereby limiting the deformation of the spring, controlling the bending deformation of the spring within a reasonable range, avoiding the problem of spring jamming and breaking, and ensuring the normal operation of the motor. By setting a locking buckle on the upper box body, the locking buckle is inserted into the locking buckle 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 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. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention is further described below in conjunction with 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 only used to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate 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-like structure, which is easy to process. The connecting buckle holes 13 are arranged on the plate surface, and the locking buckles 14 are arranged on both sides of the plate and bent downward. The locking buckles 14 are provided with a barb structure, which can achieve a stable connection after being inserted into the locking buckle holes 21 on the end cover body 2.
[0025] Three groups of connecting buckles 15 are arranged on the lower box body 12, and 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 arranged 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 is convenient for 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 narrowing zone 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 narrowing zone 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 narrowing zone 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 problem 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 end. 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 an end cover body 2, the above-mentioned motor brush box structure 1, a carbon brush 7, a braided copper wire 6 and an inductor 3. A plurality of locking card holes 21 are provided on the end cover body 2. The locking card holes 21 are used to cooperate with the locking buckles 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 buckles 14 of the upper box body 11 are inserted into the locking card holes 21 to fix the brush box without welding, thereby avoiding damage or deformation of the brush box during the welding process, improving the installation efficiency of the brush box, and thus contributing to the improvement of 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, thereby avoiding the shift of the carbon brush and ensuring 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 should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed and modified in any way without departing from the principles.
Claims
1. A motor brush box structure, characterized in that: 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 connection buckles (15), and the upper box body (11) is provided with a plurality of connection buckle holes (13) and a locking buckle (14), wherein the connection buckles (15) can be installed in the connection buckle holes (13), and the locking buckles (14) are used to be connected to 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 in the space (16) for accommodating the spring, 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 rear 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 and fixed after being inserted into the connecting buckle hole (13).
7. The motor brush box structure according to claim 5, characterized in that: The connection buckles (15) and connection 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: It comprises an end cover body (2) and a motor brush box structure according to 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 locking buckles (14).
10. An air suspension motor, characterized in that: The invention comprises the motor end cover as claimed in claim 9.