An integrated carbon brush holder for automotive motors

Abstract

An integrated automotive motor carbon brush holder includes a base, a circuit board, and multiple first transmission bases with through-holes in the middle. The upper and lower ends of each base are respectively provided with a first connector and a second connector, and the front end of the base is provided with a third connector. One end of each first transmission component is welded and fixed to one end of the circuit board, and the other end of each first transmission component extends into the third connector. The carbon brush holder also includes a fixing block. The base, circuit board, first transmission components, and fixing block are integrally injection molded. The fixing block is also disposed within the third connector, allowing the first transmission components to pass through tightly. After injection molding, the circuit board is encased inside the base, with one end of the circuit board located within the third connector and the other end located between the first and second connectors. This invention has fewer process steps, higher production efficiency, a reasonable structural design, and ensures good neatness at both ends of the first transmission components, resulting in excellent overall performance.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to an integrated carbon brush holder for automotive motors. 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 carbon brush holder. The carbon brush holder is a crucial component of the motor, located at the rear. However, existing carbon brush holders, circuit boards, and bases are assembled separately, resulting in low production efficiency and inefficient fit between the transmission components and the base. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an integrated carbon brush holder for automotive motors with high production efficiency and reasonable structural design.

[0004] The technical solution adopted by this utility model to solve its technical problem is an integrated automotive motor carbon brush holder, including a base, a circuit board, and multiple first transmission components. The base has a through-hole in the middle, and the upper and lower ends of the base are respectively provided with a first connector and a second connector. The front end of the base is provided with a third connector. One end of each of the first transmission components is welded and fixed to one end of the circuit board, and the other end of each of the first transmission components extends into the third connector. The carbon brush holder also includes a fixing block. The base, the circuit board, the first transmission components, and the fixing block are integrally injection molded. The fixing block is also disposed within the third connector, allowing the first transmission components to pass through it tightly. After the base is injection molded, the circuit board is wrapped inside the base. One end of the circuit board is also disposed within the third connector, and the other end of the circuit board is disposed between the first connector and the second connector.

[0005] The advantages of the above technical solution are as follows: the base, circuit board, and first transmission component are manufactured using an integrated injection molding process, which reduces the number of process steps and increases production efficiency. Compared with the component assembly method, the overall structure is more stable. In addition, by setting a fixing block, the first transmission component is integrated, resulting in good neatness at both ends of the first transmission component and good overall performance. After the base is injection molded, the fixing block is also very tight with the base, which can prevent moisture intrusion and prevent the circuit board from being exposed, thus achieving waterproofing and making the use of the circuit board safer. Furthermore, the circuit board and the first transmission component are connected at the position relative to the third connector, making the structural design of the first transmission component and the base more reasonable.

[0006] Furthermore, the fixing block is placed on one end of the circuit board, and support blocks are provided on both the left and right sides of the fixing block, with the support blocks supporting and cooperating with one end of the circuit board.

[0007] The advantages of the above technical solution are: the fixing block is placed at one end of the circuit board, and by setting the support block, one end of the circuit board forms a stable support for the fixing block, thereby avoiding the phenomenon that the fixing block acts entirely on the first transmission component and causes it to deform.

[0008] Furthermore, the carbon brush holder also includes two second transmission components. One end of the second transmission component is inserted into one end of the circuit board. The inner side of the first connector is provided with two first protective posts, and the other end of the second transmission component passes through the corresponding first protective post.

[0009] The advantages of adopting the above technical solution are: the two second transmission components realize electrical connection with the carbon brush, and the second transmission components replace the traditional sheathed wire, which is not affected by the heat inside the motor during operation, has a long service life, and the second transmission components are installed on the first protective post, making the use of the second transmission components safer and effectively ensuring the reliability of the connection between the second transmission components and the base.

[0010] Furthermore, the inner side of the first connector is provided with a first weight-reducing cavity, the first protective column is disposed within the first weight-reducing cavity, and a reinforcing rib is also provided within the first weight-reducing cavity, the reinforcing rib being connected to the first protective column.

[0011] The advantages of adopting the above technical solution are as follows: by setting a first weight-reducing cavity inside the first connector, the overall mass of the base is reduced, and the first protective column is set inside the first weight-reducing cavity, which is reasonably positioned. The setting of the reinforcing ribs enhances the performance of the first protective column, making the use of the second transmission component more reliable.

[0012] Furthermore, the inner side of the first connector is provided with a second degraded cavity, and the inner side of the second connector is provided with a third degraded cavity. The first degraded cavity, the second degraded cavity, and the third degraded cavity are staggered.

[0013] The advantages of adopting the above technical solution are: by setting a second weight-reducing cavity inside the first connector and a third weight-reducing cavity inside the second connector, the overall mass of the base is reduced, and the positions of the multiple weight-reducing cavities are also reasonably set.

[0014] Furthermore, the outer peripheral wall of the first connector is provided with mounting grooves at intervals, and the two side walls and the top wall of the mounting groove are provided with mounting slopes.

[0015] The advantages of the above technical solution are as follows: a notch is formed at the position of the motor cover relative to the mounting groove, and three snap-fit ​​pieces are set at the notch. The snap-fit ​​pieces are set with the mounting slope. When the motor cover is fitted onto the first connector, the notch on the motor cover is aligned with the mounting groove. After alignment, the snap-fit ​​pieces are bent and fit against the corresponding mounting slope, thereby reliably fixing the motor cover.

[0016] Furthermore, a snap-fit ​​groove is provided on the outer peripheral wall of the first connector, and the snap-fit ​​groove is positioned above the mounting groove.

[0017] The advantages of adopting the above technical solution are: by setting a snap-fit ​​ring groove, the snap-fit ​​ring groove cooperates with the snap-fit ​​ring edge on the motor cover, making the fixation more secure and the use safer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 The base structure of this utility model is viewed as follows Figure 1 ;

[0021] Figure 4 The base structure of this utility model is viewed as follows Figure 2 ;

[0022] Figure 5 This is a structural view of the base of this utility model.

[0023] In the diagram: 1-Base, 2-Circuit board, 3-First transmission component, 4-Shaft hole, 5-First connector, 6-Second connector, 7-Third connector, 8-Fixing block, 9-Support block, 10-Second transmission component, 11-First protective post, 12-First weight-reducing cavity, 13-Reinforcing rib, 14-Reinforcing rib, 15-Third weight-reducing cavity, 16-Mounting groove, 17-Mounting slope, 18-Mounting slope, 19-Third transmission component, 20-Second protective post, 21-Carbon brush holder, 22-Spring post, 23-Inductor mounting slot, 24-Mounting baffle. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 5As shown, an integrated automotive motor carbon brush holder includes a base 1, a circuit board 2, and multiple first transmission components 3. A shaft hole 4 is provided through the center of the base 1. A first connector 5 and a second connector 6 are respectively provided at the upper and lower ends of the base 1. The first connector 5 cooperates with the motor cover, and the second connector cooperates with the motor bottom shell. A third connector 7 is provided at the front end of the base 1, and the third connector 7 cooperates with the control wiring harness. One end of each of the first transmission components 3 is welded and fixed to one end of the circuit board 2, and the other end of each of the first transmission components 3 extends into the third connector 7. The first transmission components 3 connect the circuit board 2 to the control wiring harness. The carbon brush holder also includes a fixing block 8. The base 1, circuit board 2, first transmission components 3, and fixing block 8 are integrally injection molded. The fixing block 8 is also disposed within the third connector 7, allowing the first transmission components 3 to pass through tightly. After the base 1 is injection molded, the circuit board 2 is encased inside the base 1. The other end of the circuit board 2 is located inside the third connector 7, and the other end of the circuit board 2 is located between the first connector 5 and the second connector 6. In the above structure, the base 1, the circuit board 2 and the first transmission component 3 are made by an integrated injection molding process, which has fewer process steps and higher production efficiency. Compared with the component combination method, the overall structure is more stable. In addition, by setting the fixing block 8, the fixing block 8 realizes the integration of the first transmission component 3, which makes the two ends of the first transmission component 3 neat and the overall use effect good. After the base 1 is injection molded, the fixing block 8 and the base 1 are also tight (there will be a gap between the metal first transmission component 3 and the base 1), which can prevent the intrusion of water vapor and the circuit board 2 will not be exposed. Therefore, the waterproof purpose is achieved, and the use of the circuit board 2 is safer. The circuit board 2 and the first transmission component 3 are connected at the position relative to the third connector 7, which makes the structural design of the first transmission component 3 and the base 1 more reasonable.

[0026] In this embodiment, the fixing block 8 is placed on one end of the circuit board 2, and support blocks 9 are provided on both the left and right sides of the fixing block 8. The support blocks 9 are supported and cooperate with one end of the circuit board 2. In the above structure, the fixing block 8 is placed on one end of the circuit board 2, and by setting the support blocks 9, one end of the circuit board 2 forms a stable support for the fixing block 8, thereby avoiding the phenomenon that the fixing block 8 is completely acting on the first transmission component 3 and causing it to deform.

[0027] In this embodiment, the third connector 7 is arranged vertically, and the first transmission element 3 is arranged vertically side by side at the other end inside the third connector 7.

[0028] In this embodiment, the carbon brush holder also includes two second transmission components 10. One end of the second transmission component 10 is inserted into one end of the circuit board 2. The inner side of the first connector 5 is provided with two first protective posts 11. The other end of the second transmission component 10 passes through the corresponding first protective post 11. In the above structure, the two second transmission components 10 realize electrical connection with the carbon brush. The second transmission component 10 replaces the traditional sheathed wire, is not affected by the heat inside the motor during operation, has a long service life, and the second transmission component 10 passes through the first protective post 11, making the use of the second transmission component 10 safer and effectively ensuring the reliability of the connection between the second transmission component 10 and the base 1.

[0029] In this embodiment, a first weight-reducing cavity 12 is provided inside the first connector 5, and the first protective column 11 is disposed within the first weight-reducing cavity 12. More specifically, the two first protective columns 11 are disposed close to the third connector 7. A reinforcing rib 13 is also provided inside the first weight-reducing cavity 12, and the reinforcing rib 13 is connected to the first protective column 11. In the above structure, by providing the first weight-reducing cavity 12 inside the first connector 5, the overall mass of the base 1 is reduced, and the first protective column 11 is disposed within the first weight-reducing cavity 12, which is in a reasonable position. The placement of the reinforcing rib 13 enhances the performance of the first protective column 11, making the use of the second transmission component 10 more reliable.

[0030] In this embodiment, a second subtractive cavity 14 is provided on the inner side of the first connector 5, and a third subtractive cavity 15 is provided on the inner side of the second connector 6. The first subtractive cavity 12, the second subtractive cavity 14, and the third subtractive cavity 15 are staggered. In the above structure, by providing the second subtractive cavity 14 on the inner side of the first connector 5 and the third subtractive cavity 15 on the inner side of the second connector 6, the overall mass of the base 1 is reduced, and the positions of the multiple subtractive cavities are also reasonably arranged.

[0031] In this embodiment, the outer peripheral wall of the first connector 5 is provided with mounting grooves 16 at intervals, and the two side walls and the top wall of the mounting grooves 16 are provided with mounting slopes 17. In the above structure, a notch is formed at the position of the motor cover relative to the mounting grooves 16. Three snap-fit ​​pieces are provided at the notch, and the snap-fit ​​pieces are set corresponding to the mounting slopes 17. When the motor cover is fitted onto the first connector 5, the notch on the motor cover is aligned with the mounting grooves 16. After alignment, the snap-fit ​​pieces are bent and fit against the corresponding mounting slopes 17, thereby reliably fixing the motor cover.

[0032] In this embodiment, a snap-fit ​​ring groove 18 is also provided on the outer peripheral wall of the first connector 5. The snap-fit ​​ring groove 18 is positioned above the mounting groove 16. In the above structure, by providing the snap-fit ​​ring groove 18, the snap-fit ​​ring groove 18 cooperates with the snap-fit ​​ring edge on the motor cover, making the fixation more secure and the use safer.

[0033] In this embodiment, the carbon brush holder also includes a third transmission component 19. One end of the third transmission component 19 is inserted into one end of the circuit board 2. A second protective post 20 is provided inside the first connector 5. The other end of the third transmission component 19 passes through the second protective post 20. In the above structure, the third transmission component 19 realizes the electrical connection with the sensor. The third transmission component 19 replaces the traditional sheathed wire, is not affected by the heat inside the motor during operation, has a long service life, and the third transmission component 19 passes through the second protective post 20, making the use of the third transmission component 19 safer and effectively ensuring the reliability of the connection between the third transmission component 19 and the base 1.

[0034] In this embodiment, the second protective column 20 is also disposed within the first reduced-weight cavity 12, and the second protective column 20 is also connected to the reinforcing rib plate 13. In the above structure, the second protective column 18 is also disposed within the first reduced-weight cavity 12, which is reasonably positioned and has a good effect. The third transmission component 19 is reliable in use.

[0035] In this embodiment, the inner side of the first connector 5 is also provided with a carbon brush holder 21, a spring post 22, and an inductor mounting groove 23. More specifically, there are two sets of carbon brush holders 21, spring posts 22, and inductor mounting grooves 23. Two spring posts 22 are arranged between two carbon brush holders 21, two inductor mounting grooves 23 are arranged between the first subtractive cavity 12 and the two carbon brush holders 21, and a second subtractive cavity 14 is arranged between the two inductor mounting grooves 23 and the two carbon brush holders 21. In the above structure, the carbon brush holder 21 is used to install carbon brushes, the spring posts 22 are used to install torsion springs, and the inductor mounting grooves 23 are used to install inductors. The installation of torsion springs can keep the carbon brush in good contact with the contact piece. The inductor mounting groove 23 is composed of a pair of arc-shaped mounting baffles 24, and reinforcing ribs 13 are also connected to the mounting baffles 24.

[0036] 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. An integrated automotive motor carbon brush holder, comprising a base (1), a circuit board (2), and a plurality of first transmission components (3), wherein a shaft hole (4) is provided through the middle of the base (1), a first connector (5) and a second connector (6) are respectively provided at the upper and lower ends of the base (1), and a third connector (7) is provided at the front end of the base (1), one end of each of the first transmission components (3) is welded and fixed to one end of the circuit board (2), and the other end of each of the first transmission components (3) extends into the third connector (7), characterized in that: The carbon brush holder also includes a fixing block (8). The base (1), the circuit board (2), the first transmission component (3), and the fixing block (8) are integrally injection molded. The fixing block (8) is also disposed inside the third connector (7). The fixing block (8) allows the first transmission component (3) to pass through it tightly. After the base (1) is injection molded, the circuit board (2) is wrapped inside the base (1). One end of the circuit board (2) is also disposed inside the third connector (7), and the other end of the circuit board (2) is also disposed between the first connector (5) and the second connector (6).

2. The one-piece motor brush holder for vehicles according to claim 1, characterized in that: The fixing block (8) is placed on one end of the circuit board (2), and support blocks (9) are provided on both the left and right sides of the fixing block (8). The support blocks (9) are supported and cooperate with one end of the circuit board (2).

3. The one-piece motor brush holder for vehicles according to claim 1, characterized in that: The carbon brush holder also includes two second transmission components (10), one end of which is inserted into one end of the circuit board (2). The inner side of the first connector (5) is provided with two first protective posts (11), and the other end of the second transmission component (10) passes through the corresponding first protective post (11).

4. The one-piece motor brush holder for vehicles according to claim 3, characterized in that: The first connector (5) has a first degraded cavity (12) on its inner side. The first protective column (11) is set inside the first degraded cavity (12). The first degraded cavity (12) is also provided with a reinforcing rib (13), which is connected to the first protective column (11).

5. The one-piece motor brush holder for vehicles according to claim 4, characterized in that: The inner side of the first connector (5) is also provided with a second degraded cavity (14), and the inner side of the second connector (6) is also provided with a third degraded cavity (15). The first degraded cavity (12), the second degraded cavity (14), and the third degraded cavity (15) are staggered.

6. The one-piece motor brush holder for automotive vehicles of claim 1 wherein: The outer peripheral wall of the first connector (5) is provided with mounting grooves (16) at intervals, and the two side walls and the top wall of the mounting grooves (16) are provided with mounting slopes (17).

7. The integrated automotive motor carbon brush holder according to claim 6, characterized in that: The outer peripheral wall of the first connector (5) is also provided with a snap ring groove (18), which is positioned above the mounting groove (16).

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