Brush carrier assembly for automobile starter

Abstract

The utility model relates to the technical field of automobile starters, in particular to a brush holder assembly for an automobile starter, which comprises a brush holder bottom plate, two insulating plates are mounted on the rear side of the top of the brush holder bottom plate, one brush box is mounted on the top of each insulating plate, and the other brush box is mounted on each of two sides of the top of the brush holder bottom plate. An electric brush is inserted into the inner wall of the brush box; the brush box has the advantages that the positioning insertion rods are inserted into the inner walls of the insertion grooves, the installation position of the brush box can be effectively limited, accuracy of the brush box can be guaranteed, meanwhile, the clamping rings are clamped to the inner walls of the clamping grooves in a sleeved mode, installation stability of the brush box can be improved, it is guaranteed that the brush box is not prone to loosening in the operation process, and in addition, the brush box is convenient to disassemble and replace; the brush carrier assembly is simple in structure and convenient to maintain, the position of the clamping ring is fixed through matching of the protruding block and the groove, the clamping ring is guaranteed not to loosen due to vibration or external force in the using process, and the using effect of the brush carrier assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile starters, in particular to a brush holder assembly for automobile starters. Background Art

[0002] In the automotive industry, the starter is one of the key components responsible for starting the engine. It drives the engine's crankshaft by converting electrical energy into mechanical energy, thereby starting the engine. In the design of the starter, the brush holder assembly is one of the core components. Its main function is to provide support for the brush and ensure that it is in proper contact with the commutator, thereby conducting current. The brush holder assembly usually includes a brush box, a brush spring, a brush, and a brush holder base. The main function of the brush box is to accommodate and position the brush, ensuring that it is in stable contact with the commutator, thereby efficiently conducting current.

[0003] In the prior art, when installing a traditional brush box, it is usually fixed directly to the bottom plate of the brush holder by screws. Although this fixing method has a simple structure, the screws will become loose due to the influence of vibration during the long-term operation of the car. Once the screws are loose, the position of the brush box is prone to shift. This slight position change will cause poor contact between the brush and the commutator, thereby affecting the current conduction efficiency. In severe cases, it will cause premature wear of the brush and the commutator. At the same time, the use of screws for fixing makes the process of disassembly more complicated, which not only prolongs the maintenance time, but also increases the complexity of maintenance.

[0004] Therefore, a brush holder assembly for an automobile starter is needed to solve the problem that the brush box in the existing brush holder has low installation stability and is inconvenient to disassemble and replace. Utility Model Content

[0005] The purpose of the utility model is to provide a brush holder assembly for an automobile starter to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brush holder assembly for an automobile starter, comprising a brush holder base plate, two insulating plates are installed on the top rear side of the brush holder base plate, one of the brush boxes is installed on the top of the two insulating plates, another brush box is installed on both sides of the top of the brush holder base plate, a brush is plugged into the inner wall of the brush box, a brush spring is installed on the front side of the brush box, two slots are opened in the middle of the insulating plate, another two slots are opened on both sides of the front of the brush holder base plate, positioning rods are inserted into the inner walls of the plurality of slots, a card slot is opened at the bottom of the positioning rod, a snap ring is sleeved on the inner wall of the card slot, and a gasket is installed on the top of the snap ring.

[0007] Preferably, a plurality of grooves are formed on the inner wall of the card slot, and bumps are installed on the inner walls of the grooves.

[0008] Preferably, the plurality of protrusions are centered on the positioning rod, and the separated sides are all installed on the inner wall of the clamping ring, and the plurality of protrusions are arranged in a centrally symmetrical manner.

[0009] Preferably, a mounting groove is provided at the bottom of the positioning rod, a plug block is inserted into the inner wall of the mounting groove, two clamping rods are installed on the rear side of the plug block, and two limiting grooves are provided at the bottom of the clamping ring, the bottom of the clamping rod is inserted into the inner wall of the mounting groove, and the top is inserted into the inner wall of the limiting groove.

[0010] Preferably, a clamping head is installed on both the left and right sides of the insert block, a rubber ring is sleeved on the outer side of the clamping head, and two clamping grooves are provided on the front side of the bottom of the positioning insert rod.

[0011] Preferably, the clamping head is inserted into the inner wall of the clamping groove, the rubber ring is arranged on the inner wall of the clamping groove, and the rubber ring is in an extruded deformation state.

[0012] Preferably, the top end of the positioning rod is installed between the bottom of the brush box, and the top wall of the gasket is attached to the bottom of the bottom plate of the brush holder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The brush holder assembly for an automobile starter proposed by the utility model can effectively limit the installation position of the brush box by inserting the positioning plug rod into the inner wall of the slot to ensure its accuracy. At the same time, the clamping ring is clamped on the inner wall of the slot to increase the stability of the brush box installation and ensure that it is not easy to loosen during operation. In addition, it is convenient to disassemble and replace the brush box, making maintenance work easier. The position of the clamping ring is fixed by the cooperation between the protrusion and the groove, thereby ensuring that the clamping ring will not loosen due to vibration or external force during use, thereby improving the use effect of the brush holder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the slot structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the brush box structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the clamp ring of the utility model;

[0019] Figure 5 This is a schematic diagram of the positioning rod structure of the utility model;

[0020] Figure 6 for Figure 5Structural cross-section at AA in the middle;

[0021] Figure 7 This is a schematic diagram of the plug-in structure of the utility model;

[0022] Figure 8 This is a schematic diagram of the clamping rod structure of the utility model.

[0023] In the figure: 1. brush holder bottom plate; 2. insulation plate; 3. brush box; 4. brush; 5. brush spring; 6. slot;

[0024] 7. Positioning rod; 8. Groove; 9. Snap ring; 10. Gasket; 11. Slot; 12. Insert block; 13. Connecting groove; 14. Mounting groove; 15. Clamp rod; 16. Bump; 17. Clamp head; 18. Limiting groove; 19. Rubber ring. DETAILED DESCRIPTION

[0025] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Please refer to Figure 1-Figure 8 The utility model provides a technical solution: a brush holder assembly for an automobile starter, comprising a brush holder bottom plate 1, two insulating plates 2 are installed on the top rear side of the brush holder bottom plate 1, and the two brush boxes 3 on the insulating plates 2 are disassembled in the same manner as the two brush boxes 3 on the front side of the brush holder bottom plate 1, one of the brush boxes 3 is installed on the top of each of the two insulating plates 2, another brush box 3 is installed on both sides of the top of the brush holder bottom plate 1, an electric brush 4 is plugged into the inner wall of the brush box 3, a brush spring 5 is installed on the front side of the brush box 3, two slots 6 are opened in the middle of the insulating plate 2, and another two slots 6 are opened on both sides of the front of the brush holder bottom plate 1, and the inner wall of the plurality of slots 6 is provided with a plurality of brush springs 5. The walls are all plugged with positioning rods 7, and a slot 11 is provided at the bottom of the positioning rod 7. A snap ring 9 is sleeved on the inner wall of the slot 11, and a gasket 10 is installed on the top of the snap ring 9; the top of the positioning rod 7 is installed between the bottom of the brush box 3, so that the positioning rod 7 is inserted into the inner wall of the slot 6 to realize the positioning of the brush box 3, and the snap ring 9 is clamped on the inner wall of the slot 11 to realize the installation of the brush box 3 and facilitate subsequent disassembly. The top wall of the gasket 10 is fitted to the bottom of the brush holder bottom plate 1, thereby increasing the sealing of the installation between the positioning rod 7 and the brush holder bottom plate 1, preventing the occurrence of gaps and causing the positioning rod 7 to deviate.

[0027] First, pull open the snap ring 9 and remove the gasket 10. After completion, pull one side of the brush spring 5 to separate it from the surface of the brush 4, then pull the brush box 3 upwards to drive the two positioning rods 7 at the bottom to separate from the slot 6, so as to facilitate the operator to replace the brush box 3, thereby improving the use effect of the brush holder assembly. After completion, reset the brush box 3 and let its two positioning rods 7 pass through the slot 6, then put the gasket 10 on the outside of the bottom of the positioning rod 7 and fit it between the bottom of the brush holder bottom plate 1, and at the same time put the snap ring 9 on the inner wall of the slot 11, so as to limit the installation position of the brush box 3 through the two positioning rods 7 to prevent loosening after long-term use and facilitate subsequent disassembly and use.

[0028] Embodiment 2: On the basis of embodiment 1, in order to increase the installation stability between the retaining ring 9 and the positioning rod 7, a plurality of grooves 8 are opened on the inner wall of the retaining groove 11, and a protrusion 16 is installed on the inner wall of the groove 8; the plurality of protrusions 16 are installed on the inner wall of the retaining ring 9 with the positioning rod 7 as the center of the circle and on the separated sides. The plurality of protrusions 16 are arranged in a centrally symmetrical manner, and the protrusions 16 are clamped on the inner wall of the groove 8, thereby ensuring that the retaining ring 9 will not loosen due to vibration or external force during use, thereby improving the stability of the installation.

[0029] When the snap ring 9 is pulled open and the multiple protrusions 16 on its inner wall are separated from the groove 8, the brush box 3 can be disassembled at this time. After completion, the snap ring 9 is reset and the protrusions 16 are driven to be stuck on the inner wall of the groove 8. The cooperation between the protrusions 16 and the groove 8 is utilized so that the snap ring 9 will not be loosened due to vibration or external force during use, thereby improving the stability of the installation.

[0030] Embodiment 3: On the basis of embodiment 2, in order to further improve the installation firmness of the snap ring 9, a mounting groove 14 is provided at the bottom of the positioning rod 7, and a plug block 12 is inserted into the inner wall of the mounting groove 14. Two clamping rods 15 are installed on the rear side of the plug block 12. Two limiting grooves 18 are provided at the bottom of the snap ring 9. The bottom of the clamping rod 15 is inserted into the inner wall of the mounting groove 14, and the top is inserted into the inner wall of the limiting groove 18. After the clamping rod 15 is inserted into the inner wall of the limiting groove 18, the installation firmness between the snap ring 9 and the positioning rod 7 is increased to prevent it from loosening, thereby improving the installation firmness, thereby improving the installation firmness of the brush box 3 and preventing it from displacement.

[0031] First, pull the plug block 12 forward. Since the two clamping rods 15 are inserted into the inner wall of the limiting groove 18, and the inclined surface thereof fits with the rear side of the plug block 12, when the plug block 12 is disengaged from the bottom of the positioning plug rod 7, the top ends of the two clamping rods 15 will be disengaged from the limiting groove 18, thereby releasing the restriction on the clamping ring 9, and then the brush box 3 can be disassembled and replaced. After completion, the clamping ring 9 is reset, and the plug block 12 is inserted into the inner wall of the installation groove 14, and the two clamping rods 15 are pushed, so that the top ends thereof pass through the bottom wall of the clamping groove 11 and are inserted into the inner wall of the limiting groove 18, thereby restricting the clamping ring 9 after clamping to prevent it from loosening.

[0032] Embodiment 4: On the basis of embodiment 3, in order to improve the plug-in firmness of the plug-in block 12, a clamping head 17 is installed on both sides of the left and right sides of the plug-in block 12, a rubber ring 19 is sleeved on the outer side of the clamping head 17, and two clamping grooves 13 are provided on the bottom front side of the positioning rod 7; the clamping head 17 is plugged into the inner wall of the clamping groove 13, and the rubber ring 19 is arranged on the inner wall of the clamping groove 13, and the rubber ring 19 is in an extruded deformation state, so that the rubber ring 19 is used to increase the friction between the clamping head 17 and the clamping groove 13, thereby improving the plug-in firmness of the plug-in block 12.

[0033] When the plug block 12 is pulled forward, the clamping heads 17 on both sides thereof will be driven to disengage from the clamping groove 13, and the rubber ring 19 will be driven to disengage from the clamping groove 13 simultaneously, so as to facilitate the disassembly and assembly of the brush box 3. After completion, the plug block 12 will be plugged into the inner wall of the installation groove 14, driving the clamping heads 17 on both sides thereof to be plugged into the inner wall of the clamping groove 13. At the same time, when the rubber ring 19 is pushed and squeezed by the plug block 12 to reset the clamping head 17, the rubber ring 19 is in an elastic deformation state, thereby increasing the friction between the clamping head 17 and the clamping groove 13, thereby improving the firmness of the plug block 12 after being plugged in, and facilitating the subsequent disassembly.

[0034] When in actual use, first pull the plug block 12 forward to drive the clamping heads 17 on both sides thereof to disengage from the clamping groove 13, and simultaneously drive the rubber ring 19 to disengage from the clamping groove 13. At this time, since the two clamping rods 15 are inserted into the inner wall of the limiting groove 18, and at the same time, their inclined surfaces are in contact with the rear side of the plug block 12, when the plug block 12 is disengaged from the bottom of the positioning plug rod 7, the top ends of the two clamping rods 15 will disengage from the limiting groove 18, thereby releasing the restriction on the clamp ring 9, and then pull the clamp ring 9 apart, and let the multiple protrusions 16 on its inner wall disengage from the groove 8, and then remove the gasket 10. After completion, pull one side of the brush spring 5 to disengage from the surface of the brush 4, and then pull the brush box 3 upward to drive the two positioning plug rods 7 at the bottom thereof to disengage from the slot 6, so as to facilitate the operator to replace the brush box 3, thereby improving the use effect of the brush holder assembly. After completion, reset the brush box 3, and let its two positioning plug rods 7 pass through the slot 6, and then sleeve the gasket 10 on the bottom of the positioning plug rod 7 The outer side is fitted with the bottom of the brush holder bottom plate 1, and the clamping ring 9 is set on the inner wall of the clamping groove 11, driving the protrusion 16 of the inner ring wall to be clamped on the inner wall of the groove 8, so that the installation position of the brush box 3 is limited by the two positioning plug rods 7 to prevent loosening after long-term use, and facilitate subsequent disassembly and use. After the clamping is completed, the plug block 12 is plugged into the inner wall of the installation groove 14, and the two clamping rods 15 are pushed to let the top end pass through the bottom wall of the clamping groove 11. It is inserted into the inner wall of the limit groove 18, thereby limiting the clamping ring 9 after clamping to prevent it from loosening. When the plug block 12 is reset, the clamping heads 17 on both sides thereof will be driven to be inserted into the inner wall of the clamping groove 13. At the same time, when the rubber ring 19 is pushed by the plug block 12 to reset the clamping head 17, the rubber ring 19 is in an elastic deformation state, thereby increasing the friction between the clamping head 17 and the clamping groove 13, thereby improving the firmness of the plug block 12 after insertion and facilitating its use during subsequent disassembly.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brush holder assembly for an automobile starter, comprising a brush holder bottom plate (1), two insulating plates (2) being installed on the top rear side of the brush holder bottom plate (1), one of the brush boxes (3) being installed on the top of the two insulating plates (2), another brush box (3) being installed on both sides of the top of the brush holder bottom plate (1), a brush (4) being inserted into the inner wall of the brush box (3), and a brush spring (5) being installed on the front side of the brush box (3), characterized in that: Two slots (6) are provided in the middle of the insulating plate (2), and two other slots (6) are provided on both sides of the front of the brush holder bottom plate (1). Positioning rods (7) are inserted into the inner walls of the plurality of slots (6), and a clamping groove (11) is provided at the bottom of the positioning rod (7). A clamping ring (9) is sleeved on the inner wall of the clamping groove (11), and a gasket (10) is installed on the top of the clamping ring (9).

2. The brush holder assembly for an automobile starter according to claim 1, characterized in that: The inner wall of the clamping slot (11) is provided with a plurality of grooves (8), and the inner wall of the groove (8) is provided with a protrusion (16).

3. The brush holder assembly for an automobile starter according to claim 2, characterized in that: The plurality of protrusions (16) are centered on the positioning rod (7), and the separated sides are all installed on the inner wall of the clamping ring (9). The plurality of protrusions (16) are arranged in a centrally symmetrical manner.

4. The brush holder assembly for an automobile starter according to claim 1, characterized in that: The bottom of the positioning rod (7) is provided with a mounting groove (14), the inner wall of the mounting groove (14) is plugged with an insert block (12), the rear side of the insert block (12) is installed with two clamping rods (15), the bottom of the clamping ring (9) is provided with two limiting grooves (18), the bottom of the clamping rod (15) is plugged into the inner wall of the mounting groove (14), and the top is plugged into the inner wall of the limiting groove (18).

5. The brush holder assembly for an automobile starter according to claim 4, characterized in that: The left and right sides of the insert block (12) are both provided with clamping heads (17), the outer side of the clamping heads (17) is sleeved with a rubber ring (19), and the bottom front side of the positioning insert rod (7) is provided with two clamping grooves (13).

6. The brush holder assembly for an automobile starter according to claim 5, characterized in that: The clamping head (17) is inserted into the inner wall of the clamping groove (13), and the rubber ring (19) is arranged on the inner wall of the clamping groove (13), and the rubber ring (19) is in an extruded deformation state.

7. The brush holder assembly for an automobile starter according to claim 1, characterized in that: The top end of the positioning rod (7) is installed between the bottom of the brush box (3), and the top wall of the gasket (10) is attached to the bottom of the brush holder bottom plate (1).

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