Automobile generator with high-stability carbon brush holder

Abstract

The utility model discloses an automobile generator with a high-stability carbon brush holder, which relates to the technical field of automobile generators and comprises two bearing caps, stators are mounted on the inner sides of the bearing caps, rotating structures are mounted in the bearing caps and the stators, the stators are connected between the two bearing caps in a clamping manner, and the rotating structures are connected between the two bearing caps in a clamping manner. A detachable structure is arranged on one side of the bearing cover, the carbon brush structure located at the end of the bearing cover is rapidly disassembled and assembled through the detachable structure, and the detachable structure comprises an installation box fixedly connected to the outer side of the bearing cover. According to the automobile generator with the high-stability carbon brush holder, through the design of the elastic clamping piece and the spring, the carbon brush can be tightly attached to the sliding ring all the time, poor contact caused by vibration or abrasion is prevented, stable operation of the generator is ensured, the carbon brush adopts the detachable structural design, and through the cooperation of the cover plate and the mounting sleeve, the stability of the generator is improved. The carbon brush can be quickly disassembled and replaced, and the maintenance convenience is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive generator technology, specifically an automotive generator with a highly stable carbon brush holder. Background Technology

[0002] The car alternator is a core component of the car's electrical system. Its main function is to charge the car's battery and provide power to the vehicle's electrical equipment. Existing car alternators are prone to carbon brush loosening due to vibrations generated during car operation.

[0003] To overcome the above-mentioned defects, the prior art (publication number: CN217469607U) Chinese patent discloses an automotive generator with a high-stability carbon brush holder, which has a better fixing effect. It includes a fixing base, a generator fixing sleeve at the top of the fixing base, the generator fixing sleeve and the fixing base are integrally set, the front end of the generator fixing sleeve is open, the front end, left end and right end of the fixing base are provided with several first fixing bolt holes, the top of the fixing base is provided with the automotive generator body, the left end of the automotive generator body is provided with a first arc fixing block, the right end of the automotive generator body is provided with a second arc fixing block, the inner sides of the first arc fixing block and the second arc fixing block are both matched with the automotive generator body, the bottom end of the first arc fixing block and the middle part of the fixing base are both provided with second bolt fixing grooves, and the outer sides of the first arc fixing block and the second arc fixing block are both matched with the generator fixing sleeve.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist during their operation: during the operation of a car alternator, the carbon brushes inside will wear down with the increase of operating time, and it is not convenient to replace the carbon brushes in existing car alternators. Utility Model Content

[0005] The purpose of this invention is to provide an automotive alternator with a highly stable carbon brush holder, in order to solve the problem in the background art where the carbon brushes inside the automotive alternator wear down with the increase of operating time, and the existing automotive alternators are inconvenient to replace the carbon brushes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive generator with a highly stable carbon brush holder, including a bearing cover, a stator installed inside the bearing cover, and a rotating structure installed inside the bearing cover and the stator;

[0007] Two bearing covers are provided, and the stator is engaged between the two bearing covers. One side of the bearing cover is provided with a detachable structure for quick assembly and disassembly of the carbon brush structure at the end of the bearing cover. The detachable structure includes a mounting box fixedly connected to the outside of the bearing cover, and two symmetrically distributed mounting sleeves are fixedly connected to the top of the mounting box, and a cover plate is engaged inside the mounting sleeve.

[0008] Preferably, the bottom sides of the cover plate are fixedly connected to sleeves extending into the interior of the mounting sleeve, and elastic cards are slidably connected inside the sleeves. The elastic cards are made of elastic material and carbon brushes are detachably connected inside the elastic cards.

[0009] Preferably, the bearing cover is fixedly connected to an annularly distributed connecting blocks on its outer side, and the connecting blocks on the outer side of the two bearing covers are connected to each other by bolts. The bearing cover is provided with an annularly distributed ventilation hole on its outer side. The bearing cover is fixedly connected to two symmetrically distributed mounting blocks on its outer side, and the mounting blocks on the outer side of the two bearing covers are aligned with each other.

[0010] Preferably, the stator is fixedly connected to an annularly distributed heat dissipation fins on the outside, and the heat dissipation fins are fixedly connected to an annularly distributed windings inside the heat dissipation fins. The windings are divided into two layers inside the heat dissipation fins, and the two layers of windings are arranged alternately.

[0011] Preferably, the rotating structure includes a rotating shaft installed between two bearing covers, and bearings are installed at the connection between the rotating shaft and the bearing covers. Two slip rings are fixedly connected to one end of the rotating shaft near the mounting box, and the outer sides of the two slip rings are tightly fitted to the lower end of the carbon brush.

[0012] Preferably, a pulley is fixedly connected to the end of the rotating shaft away from the slip ring, and the pulley is located outside the bearing cover. A rotor is installed on the outer side of the middle part of the rotating shaft, and the rotor is located inside the middle part of the stator. A fan is fixedly connected to the end of the rotating shaft near the slip ring, and the fan is located inside the bearing cover.

[0013] Preferably, the top of the cover plate is fixedly connected to two symmetrically distributed wiring tubes, and the wiring tubes are provided with wires inside. The wiring tubes extend into the interior of the elastic card and are electrically connected to the carbon brush. A corrugated tube is provided at the connection between the wiring tube and the elastic card. A plug-in socket is fixedly connected to the end of the wiring tube away from the cover plate, and the plug-in socket is fixedly connected to one side of the mounting box.

[0014] Preferably, the cover plate is slidably connected in the middle by a screw, and the screw is threaded between two mounting sleeves. A spring is fixedly connected between the bottom sleeve of the cover plate and the elastic card, and the spring is located outside the bellows. Slide grooves are provided on both sides of the bottom sleeve of the cover plate, and symmetrically distributed sliders are fixedly connected on both sides of the elastic card. The sliders are slidably connected inside the slide grooves, and a detector is provided on one side of the bottom of the slide groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This automotive alternator features a highly stable carbon brush holder. Through the design of elastic clips and springs, the carbon brushes can always maintain a tight fit with the slip ring, preventing poor contact caused by vibration or wear and ensuring stable operation of the alternator. The carbon brushes adopt a detachable structure design, which allows for quick removal and replacement of the carbon brushes through the cooperation of the cover plate and mounting sleeve, greatly improving the convenience of maintenance.

[0017] The ventilation holes on the fan and bearing cover, combined with the heat dissipation fins on the outside of the stator, achieve efficient heat dissipation for the internal components of the generator, extending the service life of the equipment. The sliders on both sides of the elastic card cooperate with the grooves to monitor the wear of the carbon brushes in real time. When the wear reaches its maximum, the detector will remind you to replace the carbon brushes through the in-vehicle display panel, avoiding malfunctions caused by excessive carbon brush wear. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rotor structure of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the mounting box of this utility model;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the cover plate of this utility model.

[0024] In the diagram: 1. Bearing cover; 2. Stator; 3. Shaft; 4. Slip ring; 5. Mounting box; 6. Mounting sleeve; 7. Cover plate; 8. Elastic clip; 9. Carbon brush; 10. Connecting block; 11. Mounting block; 12. Heat sink fins; 13. Winding; 14. Rotor; 15. Pulley; 16. Fan; 17. Cable routing pipe; 18. Socket; 19. Screw; 20. Spring; 21. Slide groove; 22. Slider; 23. Detector. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1 - Figure 6 This utility model provides the following technical solution: an automotive generator with a high-stability carbon brush holder, including a bearing cover 1, a stator 2 installed inside the bearing cover 1, and a rotating structure installed inside the bearing cover 1 and the stator 2; two bearing covers 1 are provided, and the stator 2 is engaged between the two bearing covers 1; a detachable structure is provided on one side of the bearing cover 1 for quick disassembly and assembly of the carbon brush structure at the end of the bearing cover 1; the detachable structure includes a mounting box 5 fixedly connected to the outside of the bearing cover 1, and two symmetrically distributed mounting sleeves 6 are fixedly connected to the top of the mounting box 5, and a cover plate 7 is engaged inside the mounting sleeve 6; sleeves extending into the mounting sleeve 6 are fixedly connected to both sides of the bottom of the cover plate 7, and the sleeves slide inside. A flexible card 8 is connected, which is made of elastic material and has a detachable carbon brush 9 inside. A ring-shaped equidistant connecting block 10 is fixedly connected to the outside of the bearing cover 1, and the two connecting blocks 10 on the outside of the bearing cover 1 are connected to each other by bolts. A ring-shaped equidistant ventilation hole is opened on the outside of the bearing cover 1. Two symmetrically distributed mounting blocks 11 are fixedly connected to the outside of the bearing cover 1, and the two mounting blocks 11 on the outside of the bearing cover 1 are aligned with each other. A ring-shaped equidistant heat dissipation fin 12 is fixedly connected to the outside of the stator 2, and a ring-shaped equidistant winding 13 is fixedly connected inside the heat dissipation fin 12. The winding 13 is divided into two layers inside the heat dissipation fin 12, and the two layers of winding 13 are arranged alternately.

[0027] First, the generator is installed inside the car and connected to the drive equipment inside the car, so that the belt and pulley 15 are connected to each other. At the same time, the plug-in 18 is connected to the internal circuit of the car. When the car is running, the drive equipment inside the car will drive the pulley 15 to rotate through the belt, and then drive the shaft 3 to rotate inside the bearing cover 1 and the stator 2 through the pulley 15.

[0028] During the rotation of the shaft 3, the shaft 3 will drive the fan 16 to rotate inside the bearing cover 1. Through the rotation of the fan 16, air flows through the vent holes of the bearing cover 1, thereby dissipating heat from the bearing cover 1, the stator 2 and its internal components. At the same time, the heat dissipation fins 12 on the outside of the stator 2 also play an auxiliary role in heat dissipation.

[0029] When the shaft 3 rotates inside the stator 2, it drives the rotor 14 on its outer side to rotate. The rotation of the rotor 14 cuts magnetic induction lines to generate current. During this process, through the contact between the slip ring 4 and the carbon brush 9, the carbon brush 9 supplies external DC current to the rotor 14, causing the rotor 14 to generate a constant magnetic field. After the current is generated, it is output through the rectifier inside the generator.

[0030] During the rotation of the shaft 3, the slip ring 4 at its end is always in contact with the carbon brush 9. During the contact between the carbon brush 9 and the slip ring 4, the carbon brush 9 inside the elastic card 8 is driven by the spring 20 to move towards the slip ring 4, so that the carbon brush 9 is always in contact with the slip ring 4, preventing vibration from causing the carbon brush 9 and the slip ring 4 to loosen. Since the elastic card 8 and the carbon brush 9 are interlocked, when the carbon brush 9 is worn excessively, the cover plate 7 can be removed from the mounting sleeve 6 to remove the carbon brush 9 from the elastic card 8 for easy replacement.

[0031] Example 2: Based on Example 1, a rotating structure is also disclosed, the specific structure of which is as follows: The rotating structure includes a rotating shaft 3 installed between two bearing covers 1, and bearings are installed at the connection between the rotating shaft 3 and the bearing cover 1. Two slip rings 4 are fixedly connected to the end of the rotating shaft 3 near the mounting box 5, and the outer sides of the two slip rings 4 are tightly fitted to the lower end of the carbon brush 9; a pulley 15 is fixedly connected to the end of the rotating shaft 3 away from the slip rings 4, and the pulley 15 is located outside the bearing cover 1. A rotor 14 is installed on the outer side of the middle of the rotating shaft 3, and the rotor... 14 is located on the inner side of the middle part of the stator 2. The end of the shaft 3 near the slip ring 4 is fixedly connected to the fan 16, and the fan 16 is located inside the bearing cover 1. The top of the cover plate 7 is fixedly connected to two symmetrically distributed cable tubes 17, and the cable tubes 17 are provided with wires. The cable tubes 17 extend into the interior of the elastic card 8 and are electrically connected to the carbon brush 9. A corrugated tube is provided at the connection between the cable tubes 17 and the elastic card 8. The end of the cable tube 17 away from the cover plate 7 is fixedly connected to the plug socket 18, and the plug socket 18 is fixedly connected to one side of the mounting box 5.

[0032] The connector 18 is connected to the internal circuitry of the vehicle. Its internal wires are connected to the flexible clip 8 via the conduit 17, and then to the carbon brush 9. The DC power supply connected to the connector 18 is transmitted to the carbon brush 9 via the wires in the conduit 17, and then the carbon brush 9 transmits the DC power to the slip ring 4, and finally to the rotor.

[0033] The wires are located inside the conduit 17 and have a redundant design. When the carbon brush 9 slides the elastic card 8 at the bottom of the cover plate 7 due to wear or vibration, the distance between the top of the elastic card 8 and the cover plate 7 will change. At this time, the corrugated tube at the connection between the conduit 17 and the elastic card 8 will contract to ensure that the wires are always protected and to prevent wear between the wires and parts when the elastic card 8 moves.

[0034] Example 3: Based on Examples 1 and 2, the following structure is also disclosed: The cover plate 7 is slidably connected in the middle by a screw 19, and the screw 19 is threaded between two mounting sleeves 6. A spring 20 is fixedly connected between the bottom sleeve of the cover plate 7 and the elastic card 8, and the spring 20 is located outside the bellows. Slide grooves 21 are provided on both sides of the bottom sleeve of the cover plate 7, and symmetrically distributed sliders 22 are fixedly connected on both sides of the elastic card 8. The sliders 22 are slidably connected inside the slide grooves 21, and a detector 23 is provided on one side of the bottom of the slide grooves 21.

[0035] The cover plate 7 is fixed between the two mounting sleeves 6 by screws 19. To disassemble, simply remove the screws 19 from the mounting sleeves 6 to remove the cover plate 7 from the top of the mounting sleeves 6, and then remove the elastic clip 8 and carbon brush 9 from the mounting box 5 and the mounting sleeves 6 for easy replacement of the carbon brush 9.

[0036] During use, wear on the carbon brush 9 will cause its lower end to shorten. At this time, the spring at the top of the elastic card 8 will drive the elastic card 8 and the carbon brush 9 to move towards the slip ring 4. Simultaneously, the sliders 22 on both sides of the elastic card 8 will slide within the groove 21 and gradually move downwards as the carbon brush 9 wears. When the sliders 22 move to the position of the detector 23, it indicates that the carbon brush 9 has reached its maximum wear value, and the detector 23 will remind you to replace the carbon brush 9 via the in-vehicle display panel.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automotive generator with a high-stability carbon brush holder, comprising a bearing cover (1), a stator (2) is mounted inside the bearing cover (1), and a rotating structure is mounted inside the bearing cover (1) and the stator (2); Its features are: Two bearing covers (1) are provided, and the stator (2) is engaged between the two bearing covers (1). A detachable structure is provided on one side of the bearing cover (1) for quick assembly and disassembly of the carbon brush structure at the end of the bearing cover (1). The detachable structure includes a mounting box (5) fixedly connected to the outside of the bearing cover (1), and two symmetrically distributed mounting sleeves (6) are fixedly connected to the top of the mounting box (5), and a cover plate (7) is engaged inside the mounting sleeve (6).

2. The automotive generator with a high-stability carbon brush holder according to claim 1, characterized in that: The bottom sides of the cover plate (7) are fixedly connected to sleeves extending into the installation sleeve (6), and elastic cards (8) are slidably connected inside the sleeves. The elastic cards (8) are made of elastic material, and carbon brushes (9) are detachably connected inside the elastic cards (8).

3. The automotive generator with a high-stability carbon brush holder according to claim 1, characterized in that: The bearing cover (1) is fixedly connected to an annularly distributed connecting blocks (10) on the outside, and the connecting blocks (10) on the outside of the two bearing covers (1) are connected to each other by bolts. The bearing cover (1) is provided with an annularly distributed ventilation hole on the outside. The bearing cover (1) is fixedly connected to two symmetrically distributed mounting blocks (11), and the mounting blocks (11) on the outside of the two bearing covers (1) are aligned with each other.

4. The automotive generator with a high-stability carbon brush holder according to claim 3, characterized in that: The stator (2) is fixedly connected to an annularly distributed heat dissipation fins (12) on the outside, and the heat dissipation fins (12) are fixedly connected to a winding (13) in an annularly distributed manner. The winding (13) is divided into two layers inside the heat dissipation fins (12), and the two layers of winding (13) are arranged alternately.

5. The automotive generator with a high-stability carbon brush holder according to claim 1, characterized in that: The rotating structure includes a rotating shaft (3) installed between two bearing covers (1), and bearings are installed at the connection between the rotating shaft (3) and the bearing cover (1). Two slip rings (4) are fixedly connected to one end of the rotating shaft (3) near the mounting box (5), and the outer sides of the two slip rings (4) are tightly fitted to the lower end of the carbon brush (9).

6. The automotive generator with a high-stability carbon brush holder according to claim 5, characterized in that: The end of the rotating shaft (3) away from the slip ring (4) is fixedly connected to a pulley (15), and the pulley (15) is located outside the bearing cover (1). The rotor (14) is installed on the outer side of the middle part of the rotating shaft (3), and the rotor (14) is located inside the middle part of the stator (2). The end of the rotating shaft (3) near the slip ring (4) is fixedly connected to a fan (16), and the fan (16) is located inside the bearing cover (1).

7. The automotive generator with a high-stability carbon brush holder according to claim 1, characterized in that: The top of the cover plate (7) is fixedly connected to two symmetrically distributed wiring tubes (17), and the wiring tubes (17) are provided with wires inside. The wiring tubes (17) extend into the interior of the elastic card (8) and are electrically connected to the carbon brush (9). A corrugated tube is provided at the connection between the wiring tubes (17) and the elastic card (8). A plug-in socket (18) is fixedly connected to one end of the wiring tubes (17) away from the cover plate (7), and the plug-in socket (18) is fixedly connected to one side of the mounting box (5).

8. The automotive generator with a high-stability carbon brush holder according to claim 7, characterized in that: The cover plate (7) is slidably connected in the middle by a screw (19), and the screw (19) is threaded between two mounting sleeves (6). A spring (20) is fixedly connected between the bottom sleeve of the cover plate (7) and the elastic card (8), and the spring (20) is located outside the bellows. The bottom sleeve of the cover plate (7) is provided with sliding grooves (21) on both sides, and the elastic card (8) is fixedly connected with symmetrically distributed sliders (22) on both sides. The sliders (22) are slidably connected inside the sliding grooves (21), and a detector (23) is provided on one side of the bottom of the sliding grooves (21).

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