A motor with multi-layer brushes

Abstract

The utility model relates to the technical field of motors, and discloses a motor with multi-layer brushes, comprising an output shaft, a casing, a brush assembly and an end cover, wherein the end cover is arranged above the casing, the end cover is plugged into the open end of the casing, the output shaft is rotatably connected inside the casing, and a commutator is arranged at one end of the output shaft, the brush assembly is installed in the casing, and the brush assembly is in elastic contact with both sides of the commutator, rebound assemblies are installed on the left and right sides of the upper surface of the end cover, and a cover shell is placed on the periphery of the upper surface of the end cover; for the motor designed by the utility model, a staff member holds the handle and rotates it, at which time, a disc will gradually move upward, and the disc will not contact the moving block, and because the spring is in a compressed state, at this time, the spring rebounds, causing the square cross bar to move to the side away from the baffle, and the round bar comes out of the through slot, and at this time, the cover shell can be removed, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and more specifically discloses a motor with multi-layer brushes. Background Art

[0002] An electric motor (commonly known as a "motor") is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction.

[0003] Chinese patent publication number CN209748365U discloses a motor with multi-layer brushes. The brush assembly is installed in the motor. The brush assembly has a double-layer brush and a single-layer brush. The brush is tightly attached to the commutator through the slot on the mounting seat so that the brush is in elastic contact with each other. The double-layer brush is folded from two brushes. When the first brush of the double-layer brush is severely worn and cannot work, the second brush will automatically make elastic contact with the commutator. When the second brush is also severely worn and cannot work, the single-layer brush will automatically make elastic contact with the commutator, which can increase the service life of the motor, increase efficiency and reduce costs. However, in this patent, since heat is generated during the operation of the motor, heat is dissipated through the heat dissipation holes. However, the heat dissipation holes are small and the hole positions are easily blocked by dirt, which affects the heat dissipation. It is also inconvenient for the staff to handle the heat dissipation position, which needs to be improved. Utility Model Content

[0004] The utility model provides a motor with multi-layer brushes, which can solve the problems raised in the above background technology.

[0005] To solve the above technical problems, according to one aspect of the utility model, more specifically, a motor with multi-layer brushes includes an output shaft, a housing, a brush assembly and an end cover, wherein the end cover is arranged above the housing, and the end cover is plugged into the open end of the housing, the output shaft is rotatably connected inside the housing, and a commutator is arranged at one end of the output shaft, the brush assembly is installed in the housing, and the brush assembly is in elastic contact with both sides of the commutator;

[0006] Rebound components are installed on the left and right sides of the upper surface of the end cover, a cover shell is placed on the periphery of the upper surface of the end cover, a first through hole and a second through hole are provided on the upper surface of the cover shell, mesh sheets are pasted and fixed to the lower surfaces of the first through hole and the second through hole, a threaded hole is integrally formed in the middle of the upper surface of the cover shell, a threaded rod is threadedly connected to the inner side wall of the threaded hole, a handle is fixedly connected to the top of the threaded rod, a disc is rotatably connected to the lower side of the threaded rod through a bearing, and moving components are installed on the left and right sides of the disc, and the moving components are in contact with the rebound component;

[0007] Through slots are provided on the left and right sides of the inner side wall of the cover shell, and the rebound component is connected to the through slots.

[0008] Furthermore, the rebound assembly includes a baffle, a spring, a support tube, a round rod and a round hole. There are two support tubes in total. The support tubes are fixed to the left and right sides of the upper surface of the end cover. The round hole is opened inside the support tube, and the round rod passes through the inside of the round hole. One side of the round rod is inserted into the inner wall of the through groove, and the round rod is detachably connected to the through groove. The other side of the round rod is fixedly connected to the baffle, and the spring is sleeved on the outside of the round rod close to the baffle, and one end of the spring is fixed to the side of the baffle.

[0009] Furthermore, the moving assembly includes a square cross bar, a circular frame and a moving block, and the front and rear surfaces of the circular frame are fixed in the cover shell through a connecting rod.

[0010] Furthermore, the inner side wall of the circular frame is slidably connected to the square cross bar, one side of the upper surface of the square cross bar is fixedly connected to the moving block, and the side surface of the moving block contacts the disc.

[0011] Furthermore, a side of the square crossbar away from the moving block contacts a side surface of the blocking piece.

[0012] Furthermore, the cover shell is detachably connected to the end cover.

[0013] The beneficial effects of the motor with multi-layer brushes of the utility model are:

[0014] The motor designed by the utility model has a cover shell installed on the end cover, and the first through hole and the second through hole on the cover shell can be used for heat dissipation. In addition, the mesh sheets on the through holes can reduce the entry of dirt into the interior of the motor. In addition, when the heat dissipation parts such as the first through hole and the second through hole are blocked by dirt such as lint, the staff can disassemble the cover shell and clean the heat dissipation parts on the cover shell.

[0015] With the motor designed by the utility model, a worker holds the handle and rotates it, at which time the disc gradually moves upward, and the disc does not contact the moving block. Since the spring is in a compressed state, at this time, the spring rebounds, causing the square cross bar to move to the side away from the baffle, and the round rod comes out of the through slot. At this time, the cover shell can be removed, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0020] Figure 4 It is a schematic diagram of the top view of the cover shell in the utility model.

[0021] In the figure: 1. output shaft; 2. casing; 3. brush assembly; 4. end cover; 5. baffle; 6. square cross bar; 7. circular frame; 8. cover; 9. first through hole; 10. mesh sheet; 11. moving block; 12. handle; 13. threaded rod; 14. threaded hole; 15. round sheet; 16. spring; 17. support cylinder; 18. through groove; 19. round rod; 20. round hole; 21. second through hole; 22. moving assembly; 23. rebound assembly. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0023] According to the attached Figure 1-4 , a motor with multi-layer brushes is provided, comprising an output shaft 1, a housing 2, a brush assembly 3 and an end cover 4, the end cover 4 is arranged above the housing 2, the end cover 4 is plugged into the open end of the housing 2, the output shaft 1 is rotatably connected inside the housing 2, and a commutator is arranged at one end of the output shaft 1, the brush assembly 3 is installed in the housing 2, and the brush assembly 3 is in elastic contact with both sides of the commutator;

[0024] Rebound components 23 are installed on the left and right sides of the upper surface of the end cover 4, and a cover shell 8 is placed on the outer periphery of the upper surface of the end cover 4. The upper surface of the cover shell 8 is provided with a first through hole 9 and a second through hole 21, and the lower surfaces of the first through hole 9 and the second through hole 21 are both pasted and fixed with a mesh sheet 10. A threaded hole 14 is integrally formed in the middle of the upper surface of the cover shell 8, and a threaded rod 13 is threadedly connected to the inner side wall of the threaded hole 14, and a handle 12 is fixedly connected to the top of the threaded rod 13, and a disc 15 is rotatably connected to the lower part of the threaded rod 13 through a bearing, and a moving component 22 is installed on the left and right sides of the disc 15, and the moving component 22 is in contact with the rebound component 23;

[0025] Through slots 18 are formed on the left and right sides of the inner side wall of the housing 8 , and the rebound assembly 23 is connected to the through slots 18 .

[0026] In this embodiment, the rebound component 23 includes a baffle 5, a spring 16, a support tube 17, a round rod 19 and a round hole 20. There are two support tubes 17. The support tubes 17 are fixed to the left and right sides of the upper surface of the end cover 4. The support tube 17 has a round hole 20 inside. The round hole 20 is penetrated by the round rod 19. One side of the round rod 19 is inserted into the inner wall of the through groove 18. The round rod 19 is detachably connected to the through groove 18. The other side of the round rod 19 is fixedly connected to the baffle 5. The spring 16 is sleeved on the side of the outside of the round rod 19 close to the baffle 5, and one end of the spring 16 is fixed to the side of the baffle 5. Figure 2 As shown, the spring 16 is in a compressed state at this time.

[0027] In this embodiment, the moving assembly 22 includes a square cross bar 6, a circular frame 7 and a moving block 11. The front and rear surfaces of the circular frame 7 are fixed in the cover 8 by a connecting rod. The interior of the moving block 11 and the square cross bar 6 is hollow and light in weight. The purpose of this design is to push the square bar 6 and the moving block 11 to move when the spring 16 rebounds.

[0028] In this embodiment, the inner side wall of the circular frame 7 is slidably connected with a square cross bar 6, and a moving block 11 is fixedly connected to one side of the upper surface of the square cross bar 6, and the side surface of the moving block 11 contacts the circular sheet 15. The side of the square cross bar 6 away from the moving block 11 contacts the side surface of the baffle 5, and one side surface of the moving block 11 is inclined, so that the moving block 11 can be easily moved in the horizontal direction.

[0029] In this embodiment, the cover shell 8 is detachably connected to the end cover 4 .

[0030] The working principle of this device is:

[0031] A cover shell 8 is installed on the end cover 4 of the motor. The first through hole 9 and the second through hole 21 on the cover shell 8 can be used for heat dissipation. The mesh sheet 10 on the through hole can reduce the entry of dirt into the motor. In addition, when the heat dissipation parts such as the first through hole 9 and the second through hole 21 are blocked by dirt such as lint, the staff can hold the handle 12 and turn it. At this time, the disc 15 will gradually move upward, and the disc 15 will not contact the moving block 11. At this time, the spring 16 rebounds, causing the square cross bar 6 to move to the side away from the baffle 5, and the round rod 19 comes out of the through groove 18. At this time, the cover shell 8 can be removed for cleaning, which is convenient for subsequent use.

[0032] The electrical components that appear in this article are all electrical components that exist in reality.

[0033] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A motor with a multi-layer brush, comprising an output shaft (1), a housing (2), a brush assembly (3) and an end cover (4), characterized in that: The end cover (4) is arranged above the housing (2), and the end cover (4) is plugged into the open end of the housing (2). The output shaft (1) is rotatably connected inside the housing (2), and a commutator is arranged at one end of the output shaft (1). The brush assembly (3) is installed in the housing (2), and the brush assembly (3) is in elastic contact with both sides of the commutator. Rebound components (23) are installed on the left and right sides of the upper surface of the end cover (4); a cover shell (8) is placed on the periphery of the upper surface of the end cover (4); a first through hole (9) and a second through hole (21) are provided on the upper surface of the cover shell (8); mesh sheets (10) are glued and fixed to the lower surfaces of the first through hole (9) and the second through hole (21); a threaded hole (14) is integrally formed in the middle of the upper surface of the cover shell (8); a threaded rod (13) is threadedly connected to the inner wall of the threaded hole (14); a handle (12) is fixedly connected to the top of the threaded rod (13); a disc (15) is rotatably connected to the lower side of the threaded rod (13) via a bearing; a movable component (22) is installed on the left and right sides of the disc (15), and the movable component (22) is in contact with the rebound component (23); Through slots (18) are provided on the left and right sides of the inner side wall of the cover shell (8), and the rebound component (23) is connected to the through slots (18).

2. A motor with a multi-layer brush according to claim 1, characterized in that: The rebound component (23) comprises a baffle (5), a spring (16), a support tube (17), a round rod (19) and a round hole (20). There are two support tubes (17) in total. The support tubes (17) are fixed to the left and right sides of the upper surface of the end cover (4). The support tube (17) is provided with the round hole (20) inside. The round rod (19) passes through the inside of the round hole (20). One side of the round rod (19) is inserted into the inner wall of the through groove (18). The round rod (19) is detachably connected to the through groove (18). The other side of the round rod (19) is fixedly connected to the baffle (5). The spring (16) is sleeved on the outer side of the round rod (19) close to the baffle (5), and one end of the spring (16) is fixed to the side of the baffle (5).

3. A motor with multi-layer brushes according to claim 2, characterized in that: The moving assembly (22) comprises a square crossbar (6), a circular frame (7) and a moving block (11); the front and rear surfaces of the circular frame (7) are fixed in the housing (8) via a connecting rod.

4. A motor with multi-layer brushes according to claim 3, characterized in that: The inner side wall of the circular frame (7) is slidably connected to the square crossbar (6), one side of the upper surface of the square crossbar (6) is fixedly connected to the moving block (11), and the side surface of the moving block (11) contacts the disc (15).

5. A motor with multi-layer brushes according to claim 4, characterized in that: The side of the square cross bar (6) away from the moving block (11) contacts the side of the blocking piece (5).

6. A motor with multi-layer brushes according to claim 5, characterized in that: The cover shell (8) is detachably connected to the end cover (4).

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