High-speed wear-resistant commutator of automobile starting motor

Abstract

The utility model provides a high-speed wear-resistant commutator of an automobile starting motor, which comprises a commutator main body, a rotating rod and a motor, the commutator main body is mounted at one end of the rotating rod, the motor is mounted at the other end of the rotating rod, a plurality of commutator segments are mounted on the peripheral wall of the commutator main body, and thickening sheets are mounted on the commutator segments. The middle position of each commutator segment is provided with an insulation gap, the bottom of the commutator is provided with a plurality of wire ducts, the plurality of wire ducts are internally provided with projections, the circumferential wall of the motor is provided with a through positioning groove, the positioning groove is internally provided with a stator winding, the output end of the stator winding is connected with a coil, the other end of the coil is provided with a coil socket, and the coil socket is provided with a through hole. And the coil socket is assembled on the convex block. A fixing ring is installed on the outer wall of the bottom of the commutator body and used for fixing the connection portion of the coil and the commutator body.

Description

Technical Field

[0001] The utility model relates to the field of commutators, in particular to a high-speed wear-resistant commutator for automotive starting motors. Background Art

[0002] Commutators are widely used in fields such as DC power transmission, AC power transmission, and the stable control of power systems. In a DC power transmission system, a commutator is used to convert alternating current into direct current for power transmission. In an AC power transmission system, a commutator is used to convert direct current into alternating current for power transmission. In addition, commutators can also be used for the stable control of power systems to improve the operating efficiency and stability of power systems.

[0003] After retrieval, a high-stability automotive commutator with the application number CN202221443241.X includes a high-stability automotive commutator, which includes a commutator skeleton and a plurality of commutator segments. A plurality of card slots are arranged on the outer wall of the commutator skeleton at equal angles along the axis. A plurality of mounting blocks are fixedly connected to one side surface of each of the plurality of commutator segments. On both sides of the side surface of each mounting block close to the commutator skeleton, a card block is fixedly connected. A spring is fixedly connected to one side of the opposite surfaces of the two card blocks. Hook feet are arranged at the upper ends of the commutator segments. Shaft holes are arranged on both the left and right sides of the hook feet. Rotating shafts are rotatably connected to the inner walls of the shaft holes. One end of each rotating shaft is fixedly connected to an arc-shaped plate, and one side surface of the arc-shaped plate is slidably connected to one side surface of the hook foot. In the utility model, it is realized that the commutator skeleton will not become detached at high speeds, and at the same time, the connection between the commutator segments and the enameled wire is non-permanent, so that the commutator skeleton can be recycled.

[0004] However, when the commutator operates at high temperatures, the commutator will wear the commutator segments under the wear of the brush head. After severe wear, the connection will become unstable, and the coil is prone to short circuit or damage. Moreover, the existing connections of commutator coils are all welded. If damaged, only the whole can be replaced, and individual disassembly cannot be carried out. Therefore, a high-speed wear-resistant commutator for automotive starting motors is proposed. Content of the Utility Model

[0005] In order to achieve the above object, the utility model adopts the following technical solutions:

[0006] Commutator body;

[0007] Insulating sleeve, which is sleeved at the central position of the commutator body, and a hollow sleeve is installed through the insulating sleeve;

[0008] Commutator segments, there are a plurality of the commutator segments, and the plurality of commutator segments are all installed on the circumferential wall of the commutator body. Thickening pieces are installed on the plurality of commutator segments, and insulating gaps are provided at the connection parts of the plurality of commutator segments;

[0009] Fixed ring, which is installed on the outer wall at the bottom of the commutator body;

[0010] A rotating rod, one end of which is equipped with a commutator body, and the rotating rod is provided with an external thread, and a positioning plate is installed at one end of the external thread;

[0011] A motor, which is installed at one end away from the commutator body. The circumferential wall of the motor is provided with a through positioning groove, a stator winding is installed in the positioning groove, and the output end of the stator winding is connected with a coil.

[0012] As a preferred embodiment of the present invention, an annular hole is opened at the bottom of the commutator body, and a reinforcing ring is installed in the annular hole.

[0013] As a preferred embodiment of the present invention, the inner wall of the hollow sleeve is provided with an internal thread, and the internal thread is provided at the bottom of the hollow sleeve. The internal thread is threadedly installed with the external thread on the rotating rod.

[0014] As a preferred embodiment of the present invention, a plurality of wire grooves are installed at the bottom of the commutator body, and bumps are installed in the plurality of wire grooves.

[0015] As a preferred embodiment of the present invention, the other end of the coil is installed with a coil socket, and the coil socket is assembled on the bump.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] 1. A plurality of commutator segments are installed on the outer wall of the commutator body, and thickening pieces are installed on the plurality of commutator segments. By installing thickening pieces on the surface of the commutator segments, and the thickening pieces are made of copper sheets, and the magnetism of the installed thickening pieces is the same as that of the commutator segments, the service life of the commutator can be effectively improved when the carbon brush wears.

[0018] 2. A plurality of wire grooves are installed at the bottom of the commutator, and bumps are installed in the plurality of wire grooves. One end of the coil is installed with a coil socket, and the coil socket can be directly inserted on the bump, which is convenient for workers to install. At the same time, if the coil is damaged, it can also be replaced separately. A fixing ring is installed at the bottom of the commutator for fixing the coil socket. A fixing ring is installed on the coil socket, and the fixing ring is made of a rubber sleeve, which can prevent the coil from falling off and causing poor contact while the commutator rotates at high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structure diagram of the present invention;

[0020] Figure 2 is the structure diagram of the commutator of the present invention;

[0021] Figure 3 is the partial enlarged structure diagram of the present invention;

[0022] Figure 4 This is the structure diagram of the motor of the utility model;

[0023] Figure 5 This is a view of the coil knot of the utility model;

[0024] In the figure: 1. commutator body; 2. insulating sleeve; 3. reinforcing ring; 4. wire slot; 5. commutator segment; 6. insulating gap; 7. bump; 8. thickening sheet; 9. hollow sleeve; 10. external thread; 11. fixing ring; 12. rotating rod; 13. motor; 14. positioning groove; 15. stator winding; 16. coil; 17. coil socket; 18. positioning plate; 19. internal thread; 20. annular hole. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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:

[0027] See also Figures 1 - 5 , high-speed wear-resistant commutator for automobile starter motor, including:

[0028] Commutator body 1;

[0029] An insulating sleeve 2, the insulating sleeve 2 is installed at the center of the commutator body 1, and a hollow sleeve 9 is installed through the insulating sleeve 2;

[0030] Commutator segments 5, wherein a plurality of commutator segments 5 are provided, and the plurality of commutator segments 5 are all installed on the peripheral wall of the commutator body 1, and thickening sheets 8 are installed on the plurality of commutator segments 5, and insulating gaps 6 are provided at the connection parts of the plurality of commutator segments 5;

[0031] A fixing ring 11, wherein the fixing ring 11 is mounted on the outer wall of the bottom of the commutator body 1;

[0032] A rotating rod 12, one end of which is mounted with the commutator body 1, and the rotating rod 12 is provided with an external thread 10, and one end of which is mounted with a positioning plate 18;

[0033] The motor 13 is installed at one end away from the commutator body 1 . A penetrating positioning groove 14 is provided on the peripheral wall of the motor 13 . A stator winding 15 is installed in the positioning groove 14 . A coil 16 is connected to the output end of the stator winding 15 .

[0034] In this embodiment, an insulating sleeve 2 is installed on the commutator body 1. The purpose of the insulating sleeve 2 is to prevent electromagnetic interference to the commutator segments 5. A hollow sleeve 9 is installed on the inner wall of the insulating sleeve 2 for mounting on the rotating rod 12. On the outer wall of the commutator body 1, commutator segments 5 are installed. The function of the commutator segments 5 is to absorb magnetic force and transfer energy. A thickening piece 8 is installed on the commutator segments 5. The function of the thickening piece 8 is to enable the carbon brush to wear the commutator body 1. And the material of the thickening piece 8 is copper sheet. By installing the thickening piece 8, the service life of the commutator body 1 can be extended. And an insulating gap 6 is provided at the middle position of each commutator segment. The commutator body 1 is installed at one end of the rotating rod 12, and the rotating rod 12 is provided with an external thread 10. A positioning plate 18 is installed at the end of the external thread 10. At the end of the rotating rod 12 away from the commutator body 1, a motor 13 is installed. A through positioning groove 14 is opened on the peripheral wall of the motor 13 for fixedly placing the stator winding 15. The output end of the stator winding 15 is connected to a coil 16.

[0035] Specifically, an annular hole 20 is opened at the bottom of the commutator body 1, and a reinforcing ring 3 is installed in the annular hole 20.

[0036] In this embodiment, the reinforcing ring 3 is installed in the annular part at the bottom of the commutator body 1. Installing the reinforcing ring 3 can improve the overall strength of the commutator body 1, and can ensure that the reinforcing ring 3 can operate stably under high voltage, reducing the faults and maintenance requirements of the commutator body 1.

[0037] Specifically, an internal thread 19 is provided on the inner wall of the hollow sleeve 9, and the internal thread 19 is provided at the bottom of the hollow sleeve 9. The internal thread 19 is threadedly installed with the external thread 10 on the rotating rod 12.

[0038] In this embodiment, an internal thread 19 is provided at the bottom of the inner wall of the hollow sleeve 9. The internal thread 19 is threadedly installed with the external thread 10 on the rotating rod 12. When the commutator body 1 is threadedly installed on the rotating rod 12 and is fully engaged, the bottom of the commutator body 1 contacts the positioning plate 18.

[0039] Specifically, a plurality of wire grooves 4 are installed at the bottom of the commutator body 1, and bumps 7 are installed in the plurality of wire grooves 4.

[0040] In this embodiment, there are a plurality of wire grooves 4, and the wire grooves 4 are installed on the outer wall at the bottom of the commutator body 1. Bumps 7 are installed in the plurality of wire grooves 4.

[0041] Specifically, the other end of the coil 16 is installed with a coil socket 17, and the coil socket 17 is assembled on the bump 7.

[0042] In this embodiment, one end of the coil 16 is connected to the stator winding 15, and the other end is connected to the bump 7 on the commutator body 1. The coil 16 is provided with a coil socket 17 at the end connected to the bump 7 and is fixed on the bump 7 through the coil socket 17. A fixing ring 11 is installed on the coil socket 17. The fixing ring 11 is made of a rubber sleeve, which can prevent detachment while the commutator body 1 is running at high speed.

[0043] The principle of the present utility model is as follows: One end of the rotating rod 12 is installed with a commutator body 1, and the other end is installed with a motor 13. An insulating sleeve 2 is installed at the central position of the commutator body 1, and a hollow sleeve 9 is installed through the insulating sleeve 2. An internal thread 19 is provided at the bottom of the hollow sleeve 9. A plurality of commutator segments 5 are installed on the circumferential wall of the commutator body 1. Thickening pieces 8 are installed on the plurality of commutator segments 5. An insulating gap 6 is provided at the middle position of each commutator segment 5. A plurality of wire grooves 4 are installed at the bottom of the commutator body 1. Bumps 7 are installed in the plurality of wire grooves 4. An annular hole 20 is provided at the bottom of the commutator body 1. A reinforcing ring 3 is installed in the annular hole 20. A plurality of wire grooves 4 are provided at the bottom of the commutator body 1, and the wire grooves 4 are installed on the outer wall of the bottom of the commutator body 1. Bumps 7 are installed in the plurality of wire grooves 4; an external thread 10 is provided on the rotating rod 12, and a positioning plate 18 is provided at one end of the external thread 10. When the commutator body 1 is threadedly connected to the external thread 10 on the rotating rod 12 through the internal thread 19 in the hollow sleeve 9 and is fully engaged, the bottom of the commutator body 1 contacts the positioning plate 18; a through positioning groove 14 is provided on the circumferential wall of the motor 13, and a stator winding 15 is installed in the positioning groove 14. The output end of the stator winding 15 is connected to a coil 16. One end of the coil 16 is connected to the stator winding 15, and the other end is connected to the bump 7 on the commutator body 1. The coil 16 is provided with a coil socket 17 at the end connected to the bump 7 and is fixed on the bump 7 through the coil socket 17. A fixing ring 11 is installed on the coil socket 17, which is used to prevent the coil 16 from falling off and causing poor contact while the commutator body 1 is running at high speed.

[0044] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improvement concept of the present utility model, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present utility model.

Claims

1. High-speed wear-resistant commutator for automobile starter motor, characterized in that: include: Commutator body; An insulating sleeve, wherein the insulating sleeve is installed at the center of the commutator body and a hollow sleeve is installed through the insulating sleeve; Commutator segments, wherein a plurality of commutator segments are provided, and the plurality of commutator segments are all mounted on the peripheral wall of the commutator body, a thickening sheet is mounted on the plurality of commutator segments, and insulating gaps are provided at the connection parts of the plurality of commutator segments; A fixing ring, the fixing ring being mounted on the outer wall of the bottom of the commutator body; A rotating rod, one end of which is provided with a commutator body, and the rotating rod is provided with an external thread, and one end of which is provided with a positioning plate; The motor is installed at one end away from the commutator body, a through positioning groove is provided on the peripheral wall of the motor, a stator winding is installed in the positioning groove, and a coil is connected to the output end of the stator winding.

2. The high-speed wear-resistant commutator for automobile starter motor according to claim 1, characterized in that: An annular hole is provided at the bottom of the commutator body, and a reinforcement ring is installed in the annular hole.

3. The high-speed wear-resistant commutator for automobile starter motor according to claim 1, characterized in that: An internal thread is arranged on the inner wall of the hollow sleeve, and the internal thread is arranged at the bottom of the hollow sleeve. The internal thread and the external thread on the rotating rod are threadedly mounted.

4. The high-speed wear-resistant commutator for automobile starter motor according to claim 1, characterized in that: A plurality of wire grooves are installed at the bottom of the commutator body, and bumps are installed in the plurality of wire grooves.

5. The high-speed wear-resistant commutator for the automobile starter motor according to claim 4, characterized in that: A coil socket is installed at the other end of the coil, and the coil socket is assembled on the protrusion.

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