Carbon brush holder structure of motor for vehicle

Abstract

A carbon brush holder structure for an automotive motor includes a mounting base. A first connector and a second connector are integrally formed on the upper and lower ends of the mounting base, respectively. A carbon brush holder, a torsion spring post, and a first conductive element are grouped together on the inner side of the first connector. The carbon brush holder has an opening for mounting the carbon brush. The torsion spring post is used to mount the torsion spring connecting the carbon brush. The first conductive element is electrically connected to the carbon brush. A circuit board and multiple second conductive elements are provided on the inner side of the second connector. The second conductive elements are electrically connected to the circuit board, and the first conductive elements are also electrically connected to corresponding second conductive elements. The other end of each second conductive element passes through the front end face of the mounting base. A third connector is also integrally formed on the front end face of the mounting base, with the other end of each second conductive element positioned inside the third connector. This invention features a reasonable installation fit, long service life, safe use, high connection strength, and is less prone to loosening during use.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a carbon brush holder structure for an automotive motor. Background Technology

[0002] People's demands for automobiles have shifted from basic transportation to intelligent, comfortable, and lightweight features. More and more devices require electrification, which is fundamental. In this context, electric motors have developed rapidly in the automotive industry, leading to increasingly higher requirements for them: smaller size, higher torque, and lower noise. An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines. An electric motor mainly consists of a magnetic core, coil windings, a housing, and a brush holder. The brush holder assembly is a crucial component of the motor, located at the rear. However, existing brush holders have insufficient connection strength with the housing, leading to loosening of screw connections due to resonance during use. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a carbon brush holder structure for automotive motors with high connection strength and less prone to loosening.

[0004] The technical solution adopted by this utility model to solve its technical problem is a carbon brush holder structure for an automotive motor, including a mounting base. A first connector and a second connector are integrally formed on the upper and lower ends of the mounting base, respectively. A shaft hole is also provided through the middle of the mounting base. The first connector, the second connector and the shaft hole are coaxially arranged. A carbon brush holder, a torsion spring post and a first conductive element are arranged in a group on the inner side of the first connector. The carbon brush holder has an installation opening for installing carbon brushes. The torsion spring post is used to install a torsion spring for connecting carbon brushes. The first conductive element is electrically connected to the carbon brush. A circuit board and a plurality of second conductive elements are provided on the inner side of the second connector. The second conductive elements are electrically connected to the circuit board. The first conductive element is also electrically connected to a corresponding second conductive element. The other end of each second conductive element passes through the front end face of the mounting base. A third connector is integrally formed on the front end face of the mounting base, and the other end of each second conductive element is arranged inside the third connector.

[0005] The advantages of the above technical solution are as follows: By setting a shaft hole, the rotating shaft is able to pass through the mounting base; by setting a first connector at the upper end of the mounting base, the motor cover shell, through the insertion and engagement with the first connector, reduces resonance to a certain extent, achieving a stable connection with the mounting base; by setting a carbon brush holder with an installation opening on the inner side of the first connector, quick installation of the carbon brush is achieved; by setting a torsion spring post on the inner side of the first connector, the torsion spring is installed, and the installed torsion spring ensures good contact between the carbon brush and the contact piece; by setting a first conductive element on the inner side of the first connector, the first conductive element replaces the traditional sheathed wire, is not affected by the heat inside the motor during operation, and has a long service life; by setting a second connector at the lower end of the mounting base, the motor base shell, through the insertion and engagement with the second connector, ... To a certain extent, the resonance of the motor housing is reduced, achieving a stable connection with the mounting base. By setting the circuit board inside the second connector, it further facilitates the miniaturization and integration of electronic equipment. By setting the second conductive element inside the second connector, the second conductive element realizes the transmission connection between the plug and the circuit board, as well as the transmission connection between the first conductive element and the circuit board, replacing the traditional sheathed wire. It is not affected by the heat inside the motor during operation and has a long service life. By setting the third connector on the front end of the mounting base, the exposed length of the other end of the second conductive element is reduced, avoiding deformation under stress during transportation or collisions. At the same time, it achieves the purpose of connecting to the external plug. Therefore, the installation fit of this product is reasonable, the service life is long, the use is safe, the connection strength is high, and the connection loosening problem is not easy to occur.

[0006] Furthermore, the outer wall surface of the first connector is tightly fitted with the inner wall surface of the motor cover, the outer wall surface of the second connector is tightly fitted with the inner wall surface of the motor bottom shell, and a first sealing element is provided on the upper end surface of the mounting base, the first sealing element being disposed on the outer side of the first connector, and a second sealing element is provided on the lower end surface of the mounting base, the second connector being disposed on the inner side of the second sealing element.

[0007] The advantages of the above technical solution are: the first connector and the motor cover, as well as the second connector and the motor base, are all tightly fitted together, making the size of the mounting base reasonable. Furthermore, by setting the corresponding first and second sealing elements, effective sealing can be achieved, making the components located inside the first and second connectors safer to use.

[0008] Furthermore, the first seal, the second seal, and the mounting base are integrally injection molded structures. The mounting base is also provided with connecting through holes, which are circumferentially spaced and correspond to the first seal and the second seal. The connecting through holes are used to mate with connecting posts, which make the first seal and the second seal integrally injection molded structures.

[0009] The advantages of the above technical solution are as follows: the first seal, the second seal and the mounting base are integrated by injection molding, which effectively ensures the sealing performance, simplifies assembly and improves production efficiency. By setting the connecting perforation, the purpose of injection molding of the connecting column is achieved. In addition, the connecting column also makes the first seal and the second seal an integrated structure. Therefore, the connection between the first seal, the second seal and the mounting base will be more stable and the performance will be better.

[0010] Furthermore, both the outer peripheral wall of the first seal and the outer peripheral wall of the second seal are provided with positioning protrusions, and both the upper and lower end surfaces of the mounting base are provided with positioning recesses, the positioning protrusions cooperating with the positioning recesses.

[0011] The advantages of adopting the above technical solution are: by setting the corresponding positioning protrusions and positioning recesses, the connection between the first and second sealing elements and the mounting base will be more stable, and the performance will be better.

[0012] Furthermore, a first sealing ring edge and a second sealing ring edge are provided on the upper end surface of the first sealing member and the lower end surface of the second sealing member, and the first sealing ring edge and the second sealing ring edge are distributed at an inner and outer interval.

[0013] The advantages of adopting the above technical solution are: by setting the first sealing ring edge and the second sealing ring edge, the contact between the motor cover and the first sealing element, and between the motor bottom cover and the second sealing element will be tighter, thereby making the waterproof sealing effect better.

[0014] Furthermore, the upper surface of the mounting base is provided with a plurality of inductor mounting slots, which are located at the inner edge of the first connector. The upper surface of the mounting base is also provided with a matching mounting baffle on one side of the inductor mounting slots. The mounting base is also provided with a through hole for matching the inductor on the inner side of the first connector.

[0015] The advantages of the above technical solution are: by setting inductor mounting slots and mounting baffles, the purpose of effectively installing inductors can be achieved. Moreover, the inductor mounting slots are set in a reasonable position, and the through holes allow the inductor pins to pass through, thereby electrically connecting with the circuit board.

[0016] Furthermore, three mounting blocks are provided on the peripheral end face of the mounting base, each mounting block having a through mounting hole, and the mounting blocks are arranged in a triangular pattern.

[0017] The advantages of the above technical solution are: by passing screws through the mounting holes on the mounting blocks, the mounting base can be effectively fixed and used, and the distribution of the three mounting blocks is reasonable, so the fixing effect of the mounting base is also reliable. Attached Figure Description

[0018] Figure 1 View of the overall structure of this utility model Figure 1 ;

[0019] Figure 2 View of the overall structure of this utility model Figure 2 ;

[0020] Figure 3 View of the overall structure of this utility model Figure 3 ;

[0021] Figure 4 This is a partial structural view of the present invention. Figure 1 ;

[0022] Figure 5 This is a partial structural view of the present invention. Figure 2 ;

[0023] Figure 6 The structural view of the first and second sealing elements of this utility model Figure 1 ;

[0024] Figure 7 The structural view of the first and second sealing elements of this utility model Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the structure of the first conductive element and the second conductive element of this utility model.

[0026] In the diagram: 1-Mounting base, 2-First connector, 3-Second connector, 4-Shaft hole, 5-Carbon brush holder, 6-Torsion spring post, 7-First conductive element, 8-Mounting opening, 9-Circuit board, 10-Second conductive element, 11-Third connector, 12-First seal, 13-Second seal, 14-Connecting through hole, 15-Connecting post, 16-Positioning protrusion, 17-Positioning recess, 18-First sealing ring edge, 19-Second sealing ring edge, 20-Inductor mounting groove, 21-Mounting baffle, 22-Through hole, 23-Mounting block, 24-Mounting hole. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0028] Please see Figures 1 to 8 As shown, a carbon brush holder structure for an automotive motor includes a mounting base 1. A first connector 2 and a second connector 3 are integrally formed on the upper and lower ends of the mounting base 1, respectively. A shaft hole 4 is also provided through the middle of the mounting base 1. The first connector 2, the second connector 3, and the shaft hole 4 are coaxially arranged. A carbon brush holder 5, a torsion spring post 6, and a first conductive element 7 are arranged in groups on the inner side of the first connector 2. It should be noted that there are two sets of the carbon brush holder 5, the torsion spring post 6, and the first conductive element 7. The carbon brush holder 5 has a mounting opening 8 for installing the carbon brush. The torsion spring post 6 is used to install the torsion spring connecting the carbon brush. After installation, one end of the torsion spring is connected to the wall of the mounting base 1, and the other end of the torsion spring is connected to the carbon brush. The first conductive element 7 is electrically connected to the carbon brush, and the connection between the first conductive element 7 and the carbon brush can be achieved by welding a wire. The inner side of the second connector 2 is provided with… There is a circuit board 9 and multiple second conductive elements 10. The second conductive elements 10 are electrically connected to the circuit board 9. More specifically, one end of the second conductive element 10 is set inside the second connector 2, and the end of the second conductive element 10 that mates with the circuit board 9 is set with a fisheye structure. In this way, the second conductive element 10 and the circuit board 9 do not need to be soldered. The first conductive element 7 is also electrically connected to the corresponding second conductive element 10. Two first conductive elements 7 can be connected to the corresponding second conductive element 10 by soldering. The other end of each second conductive element 10 passes through the front end face of the mounting base 1. The front end face of the mounting base 1 is also integrally formed with a third connector 11, and the other end of each second conductive element 10 is set inside the third connector 11. The third connector 11 is used to install a plug, thereby forming a transmission between the second conductive element 10 and the circuit board 9.

[0029] In the above structure, by setting the shaft hole 4, the rotating shaft passes through the mounting base 1. By setting the first connector 2 at the upper end of the mounting base 1, the motor cover shell reduces resonance to a certain extent through the insertion and cooperation with the first connector 2, achieving a stable connection with the mounting base 1. By setting the carbon brush holder 5 with the installation opening 8 inside the first connector 2, the carbon brush is quickly installed. By setting the torsion spring post 6 inside the first connector 2, the torsion spring is installed, and the installed torsion spring can keep the carbon brush in good contact with the contact piece. By setting the first conductive element 7 inside the first connector 2, the first conductive element 7 replaces the traditional sheathed wire, is not affected by the heat inside the motor during operation, and has a long service life. By setting the second connector 3 at the lower end of the mounting base 1, the motor base shell is inserted and cooperates with the second connector 3 to a certain extent. The resonance of the motor housing is reduced to a certain extent, achieving a stable connection with the mounting base 1. By setting the circuit board 9 inside the second connector 3, it is more conducive to the miniaturization and integration of electronic equipment. By setting the second conductive element 10 inside the second connector 3, the second conductive element 10 realizes the transmission connection between the plug and the circuit board 9, as well as the transmission connection between the first conductive element 7 and the circuit board 9, replacing the traditional sheathed wire. It is not affected by the heat inside the motor during operation and has a long service life. By setting the third connector 11 on the front end face of the mounting base 1, the third connector 11 reduces the exposed length of the other end of the second conductive element 10, avoiding deformation under stress during transportation or collision, and at the same time achieving the purpose of connecting with the external plug. Therefore, the installation fit of this product is reasonable, the service life is long, the use is safe, the connection strength is high, and the connection loosening problem is not easy to occur during use.

[0030] In this embodiment, the outer wall surface of the first connector 2 is tightly fitted with the inner wall surface of the motor cover, and the outer wall surface of the second connector 3 is tightly fitted with the inner wall surface of the motor bottom shell. A first sealing element 12 is provided on the upper end surface of the mounting base 1, and the first sealing element 12 is disposed on the outer side of the first connector 2. A second sealing element 13 is provided on the lower end surface of the mounting base 1, and the second connector 3 is disposed on the inner side of the second sealing element 13. In the above structure, the first connector 2 and the motor cover, as well as the second connector 3 and the motor bottom shell, are tightly fitted from the inside and outside, making the volume of the mounting base 1 reasonable. By setting the corresponding first sealing element 12 and second sealing element 13, effective sealing can be achieved, making the components located inside the first connector 2 and the second connector 3 safer to use.

[0031] In this embodiment, the first seal 12, the second seal 13, and the mounting base 1 are integrally injection molded structures. The mounting base 1 is also provided with through-holes 14, which are circumferentially spaced and correspond to the first seal 12 and the second seal 13. More specifically, the through-holes 14 are arranged to connect the lower end face of the first seal 12 and the upper end face of the second seal 13, and are used to cooperate with the connecting post 15. The connecting post 15 makes the first seal 12 and the second seal 13 an integrally injection molded structure. The lower end face of the first seal 12... The connecting post 15 is connected between the upper end face of the first seal 12 and the second seal 13. In the above structure, the first seal 12, the second seal 13 and the mounting base 1 are integrally injection molded, which effectively ensures the sealing performance, simplifies the assembly and improves the production efficiency. By setting the connecting through hole 14, the purpose of injection molding of the connecting post 15 is realized. The connecting post 14 also makes the first seal 12 and the second seal 13 an integral structure. Therefore, the connection between the first seal 12 and the second seal 13 and the mounting base 1 will be more stable and the use effect will be better.

[0032] In this embodiment, positioning protrusions 16 are provided on the outer peripheral wall of the first sealing member 12 and the outer peripheral wall of the second sealing member 13, and positioning recesses 17 are provided on the upper and lower end surfaces of the mounting base 1. The positioning protrusions 16 and positioning recesses 17 cooperate with each other. In the above structure, by setting the corresponding positioning protrusions 16 and positioning recesses 17, the connection between the first sealing member 12 and the second sealing member 13 and the mounting base 1 will be more stable and the use effect will be better.

[0033] In this embodiment, a first sealing ring edge 18 and a second sealing ring edge 19 are provided on the upper end surface of the first sealing member 12 and the lower end surface of the second sealing member 13. The first sealing ring edge 18 and the second sealing ring edge 19 are distributed at an inner and outer interval. In the above structure, by providing the first sealing ring edge 18 and the second sealing ring edge 19, the contact between the motor cover and the first sealing member 12, and between the motor bottom cover and the second sealing member 13, will be tighter, thereby making the waterproof sealing effect better.

[0034] In this embodiment, the upper surface of the mounting base 1 is also provided with a plurality of inductor mounting slots 20. The inductor mounting slots 20 are set at the inner edge of the first connector 2. The upper surface of the mounting base 1 is also provided with a matching mounting baffle 21 on one side of the inductor mounting slot 20. The mounting baffle 21 cooperates with the inner wall of the first connector 2 to limit the inductor, thereby making the inductor mounting slot 20 more reasonably shaped. The mounting base 1 is also provided with a through hole 22 for cooperating with the inductor on the inner side of the first connector 2. In the above structure, by setting the inductor mounting slots 20 and the mounting baffle 21, the purpose of effectively installing the inductor is achieved. The setting position of the inductor mounting slots 20 is reasonable. The setting of the through hole 21 allows the inductor pins to pass through, thereby electrically connecting with the circuit board 9. In this way, the wires cooperating with the inductor pins will not be squeezed by the motor cover.

[0035] In this embodiment, three mounting blocks 23 are provided on the peripheral end face of the mounting base 1. Mounting holes 24 are provided through the mounting blocks 23, and the mounting blocks 23 are triangularly distributed. In this embodiment, the mounting base 1 is effectively fixed and used by passing the screws through the mounting holes 24 on the mounting blocks 23. The distribution of the three mounting blocks 23 is reasonable, and the fixed use effect of the mounting base 1 is reliable.

[0036] In this embodiment, the carbon brush holder 5 is formed at the bottom of the inner wall surface of the first connector 2, and the mounting opening 8 is provided to penetrate the first connector 2.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A carbon brush holder structure of a motor for vehicle, characterized by The system includes a mounting base (1), on which a first connector (2) and a second connector (3) are integrally formed on the upper and lower ends, respectively. A shaft hole (4) is also provided through the middle of the mounting base (1). The first connector (2), the second connector (3), and the shaft hole (4) are coaxially arranged. A carbon brush holder (5), a torsion spring post (6), and a first conductive element (7) are arranged in a group on the inner side of the first connector (2). The carbon brush holder (5) has an installation opening (8) for mounting the carbon brush. The torsion spring post (6) is used to install the torsion spring connecting the carbon brush. The first conductive element... (7) Electrically connected to the carbon brush, the inner side of the second connector (3) is provided with a circuit board (9) and a plurality of second conductive elements (10), the second conductive elements (10) are electrically connected to the circuit board (9), the first conductive element (7) is also electrically connected to the corresponding second conductive element (10), the other end of the second conductive element (10) is provided on the front end surface of the mounting base (1), the front end surface of the mounting base (1) is also integrally formed with a third connector (11), and the other end of the second conductive element (10) is provided on the inner side of the third connector (11).

2. The carbon brush holder structure of the electric motor for vehicle according to claim 1, characterized in that: The outer wall of the first connector (2) is tightly fitted with the inner wall of the motor cover, the outer wall of the second connector (3) is tightly fitted with the inner wall of the motor bottom shell, and a first sealing element (12) is provided on the upper end surface of the mounting base (1), the first sealing element (12) is located on the outside of the first connector (2), a second sealing element (13) is provided on the lower end surface of the mounting base (1), and the second connector (3) is located on the inside of the second sealing element (13).

3. The carbon brush holder structure of the electric motor for vehicle according to claim 2, characterized in that: The first seal (12), the second seal (13), and the mounting base (1) are integral injection molded structures. The mounting base (1) is also provided with a connecting through hole (14). The connecting through hole (14) is circumferentially spaced and corresponds to the first seal (12) and the second seal (13). The connecting through hole (14) is used to cooperate with the connecting post (15). The connecting post (15) makes the first seal (12) and the second seal (13) integral injection molded structures.

4. A carbon brush holder structure for a vehicle electric motor according to claim 2 or 3, characterized in that: The outer peripheral wall of the first seal (12) and the outer peripheral wall of the second seal (13) are also provided with positioning protrusions (16), and the upper and lower end surfaces of the mounting base (1) are also provided with positioning recesses (17), and the positioning protrusions (16) cooperate with the positioning recesses (17).

5. The carbon brush holder structure of the electric motor for vehicle according to claim 4, characterized in that: The upper end face of the first seal (12) and the lower end face of the second seal (13) are provided with a first sealing ring edge (18) and a second sealing ring edge (19), and the first sealing ring edge (18) and the second sealing ring edge (19) are distributed with an inner and outer interval.

6. The carbon brush holder structure of an electric motor for a vehicle according to claim 1, characterized in that: The upper surface of the mounting base (1) is also provided with a plurality of inductor mounting slots (20), the inductor mounting slots (20) are located at the inner edge of the first connector (2), the upper surface of the mounting base (1) is also provided with a matching mounting baffle (21) on one side of the inductor mounting slots (20), and the mounting base (1) is also provided with a through hole (22) for matching inductors on the inner side of the first connector (2).

7. The carbon brush holder structure of an electric motor for vehicle according to claim 1, characterized in that: The mounting base (1) is provided with three mounting blocks (23) on its peripheral end face. The mounting blocks (23) are provided with mounting holes (24) and are arranged in a triangular pattern.

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