CN212908460U

CN212908460U - Carbon brush device of DC motor

Info

Publication number: CN212908460U
Application number: CN202022356447.6U
Authority: CN
Inventors: 魏强; 李保鹏; 黄立成
Original assignee: Xinjiang Xiniangwei Electric Co ltd
Current assignee: Xinjiang Xiniangwei Electric Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-04-06
Anticipated expiration: 2030-10-21

Abstract

The utility model belongs to the technical field of the DC motor, especially, be a DC motor carbon brush device, the installation of the carbon brush to current motor all is direct fixed mounting in the motor housing usually, is not convenient for carry out the problem of dismouting maintenance and change, now proposes following scheme, and it includes the casing, rotate the bottom of installing the main shaft on the bottom inner wall of casing, the top of main shaft extends to the top of casing, be provided with a plurality of magnets on the inner wall of casing, the outside of main shaft is from last to having set gradually rotor and commutator down, first spout has all been seted up to the bottom inner wall both sides of casing, and equal slidable mounting has first sliding plate in two first spouts. The utility model discloses a mutually supporting between components such as pivot, first spring, second spring, limiting plate, spacer pin, draw-in groove, rotor plate, can high efficiency dismantle simple operation, convenient to use to the carbon brush.

Description

Carbon brush device of DC motor

Technical Field

The utility model relates to a direct current motor technical field especially relates to a direct current motor carbon brush device.

Background

Carbon brushes (Carbon brushes), also called brushes, are widely used as sliding contacts in many electrical devices. The carbon brush mainly comprises graphite, impregnated graphite and metal (copper and silver) graphite in product application. The carbon brush is a device for transmitting energy or signals between a fixed part and a rotating part of a motor or a generator or other rotating machinery, is generally made of pure carbon and a coagulant, is generally square in shape, is clamped on a metal support, is tightly pressed on a rotating shaft by a spring inside, and transmits electric energy to a coil through a phase changer when the motor rotates. The carbon should be periodically maintained and replaced and cleaned. However, the carbon brush of the existing motor is usually directly and fixedly installed in the motor housing, which is inconvenient to assemble, disassemble, repair and replace, so we propose a carbon brush device of a direct current motor to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art and providing a carbon brush device of a direct current motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a carbon brush device of a direct current motor comprises a shell, wherein the bottom end of a main shaft is rotatably arranged on the inner wall of the bottom of the shell, the top end of the main shaft extends to the upper part of the shell, a plurality of magnets are arranged on the inner wall of the shell, a rotor and a commutator are sequentially arranged on the outer side of the main shaft from top to bottom, first sliding grooves are respectively formed in two sides of the inner wall of the bottom of the shell, first sliding plates are respectively and slidably arranged in the two first sliding grooves, vertical plates are respectively and fixedly arranged on the top sides of the two first sliding plates, one sides, far away from each other, of the two vertical plates are respectively and rotatably provided with one end of a rotating shaft, the other ends of the two rotating shafts respectively extend to two sides of the shell and are fixedly provided with limiting plates, gears are respectively and rotatably arranged on the inner walls of two sides of the shell and are respectively and slidably connected with, equal slidable mounting has the second sliding plate in two second spouts, and the equal fixed mounting in one side that two second sliding plates are close to each other has the rack, and two gears mesh with the rack that corresponds respectively mutually, has all seted up the spacing groove on two rotor plates, and equal movable mounting has the catch bar in two spacing grooves, the clearing hole has all been seted up to the both sides of casing, and the one end that two catch bars were kept away from each other extends to corresponding in the through hole respectively, and the equal fixed mounting in one end that two catch bars are close to each other has the one end of carbon brush, and the other end of two carbon brushes all contacts with the commutator, and the bottom side of two carbon brushes contacts with the top of the riser that corresponds.

Preferably, one end of a first spring is fixedly mounted on the inner wall of one side of the first sliding groove, the other end of the first spring is fixedly connected with the first sliding plate, and the vertical plate can be pushed to reset through the first spring.

Preferably, the both sides of casing all are provided with a plurality of draw-in grooves for the centre of a circle annular based on the pivot, and the equal fixed mounting in one side that two limiting plates are close to each other has the one end of spacer pin, and the other end of a plurality of spacer pins extends to respectively in the draw-in groove that corresponds, can carry on spacingly to the limiting plate through spacer pin and a plurality of draw-in grooves.

Preferably, the same sliding rod is fixedly mounted on the inner wall of the top of the second sliding chute and the inner wall of the bottom of the second sliding chute, the sliding rod is connected with the second sliding plate in a sliding manner, the top end of a second spring is fixedly mounted on the bottom side of the second sliding plate, the bottom end of the second spring is fixedly connected with the inner wall of the bottom of the second sliding chute, the second sliding plate can be pushed to reset through the second spring, and the second spring and the second sliding plate can be effectively guided through the sliding rod.

Preferably, the outside slidable mounting of casing has annular sliding sleeve, annular sliding sleeve and two through-hole looks adaptations, and be provided with the buffer board on the inner wall of annular sliding sleeve, the buffer board contacts with the catch bar, can seal the clearing hole through annular sliding sleeve, can provide certain buffering to the catch bar through the buffer board.

Preferably, one side of limiting plate is provided with the pull ring, and fixed cover is equipped with anti-skidding cover on the pull ring, is convenient for the operator to operate through the pull ring.

In the utility model, when in use, the carbon brush device of the DC motor is firstly switched on, under the action of the carbon brush and the commutator, the coil in the rotor is powered, the rotor drives the main shaft to rotate under the combined action of the magnet and the coil, when the carbon brush needs to be maintained or replaced, the power supply is cut off, the pull ring is pulled by holding the pull ring or a related tool, so that the limiting pin is separated from the clamping groove, meanwhile, the first sliding plate extrudes the first spring, the limiting plate is rotated by the pull ring to enable the gear and the rotating plate to synchronously rotate, the gear rotates to enable the rack to downwards pull the second sliding plate to downwards extrude the second spring along the sliding rod, the limiting groove is separated from the push rod along with the rotation of the rotating plate, fixing the limiting plate through a limiting pin, sliding the annular sliding sleeve upwards, and taking out the carbon brush from the through hole through a push rod for overhauling or replacing;

after the overhaul is accomplished, handheld catch bar pushes the carbon brush through the clearing hole, provide certain support to the carbon brush under the effect of riser, with annular sliding sleeve lapse, make the catch bar drive the carbon brush and contact with the commutator, the pulling pull ring carries out the antiport to the limiting plate, make spacing groove card in the outside of catch bar, loosen the pull ring, make the riser make the spacer pin get into the draw-in groove through pivot pulling limiting plate under the effect of first spring in, make carbon brush and commutator keep better contact under the effect of buffer board, accomplish the installation.

The utility model discloses a mutually supporting between components such as pivot, first spring, second spring, limiting plate, spacer pin, draw-in groove, rotor plate, can high efficiency dismantle simple operation, convenient to use to the carbon brush.

Drawings

Fig. 1 is a schematic structural view of a carbon brush device of a dc motor according to the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 of a carbon brush apparatus for a dc motor according to the present invention;

fig. 3 is an enlarged view of a portion B of a dc motor carbon brush apparatus according to the present invention and 1;

fig. 4 is a schematic diagram of a rotating plate and a limiting groove of a carbon brush device of a dc motor according to the present invention.

In the figure: 1. a housing; 2. a main shaft; 3. a rotor; 4. a commutator; 5. a magnet; 6. a first chute; 7. a first sliding plate; 8. a vertical plate; 9. a rotating shaft; 10. a limiting plate; 11. a gear; 12. a rotating plate; 13. a second chute; 14. a second sliding plate; 15. a rack; 16. a limiting groove; 17. a push rod; 18. through the hole; 19. a carbon brush; 20. an annular sliding sleeve; 21. a first spring; 22. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a carbon brush device of a direct current motor comprises a housing 1, wherein the bottom end of a main shaft 2 is rotatably mounted on the inner wall of the bottom of the housing 1, the top end of the main shaft 2 extends to the upper part of the housing 1, a plurality of magnets 5 are arranged on the inner wall of the housing 1, a rotor 3 and a commutator 4 are sequentially arranged on the outer side of the main shaft 2 from top to bottom, first chutes 6 are respectively arranged on both sides of the inner wall of the bottom of the housing 1, first sliding plates 7 are respectively slidably mounted in the first chutes 6, vertical plates 8 are respectively fixedly mounted on the top sides of the first sliding plates 7, one ends of rotating shafts 9 are respectively rotatably mounted on the sides of the two vertical plates 8 far away from each other, the other ends of the rotating shafts 9 respectively extend to both sides of the housing 1 and are fixedly mounted with limiting plates 10, gears 11 are rotatably mounted on the, the equal fixed cover in outside of two pivot 9 is equipped with rotor plate 12, second spout 13 has all been seted up on the both sides inner wall of casing 1, equal slidable mounting has second sliding plate 14 in two second spout 13, the equal fixed mounting in one side that two second sliding plates 14 are close to each other has rack 15, two gears 11 mesh with corresponding rack 15 respectively, spacing groove 16 has all been seted up on two rotor plates 12, equal movable mounting has catch bar 17 in two spacing grooves 16, clearing hole 18 has all been seted up to casing 1's both sides, the one end that two catch bar 17 kept away from each other extends to corresponding clearing hole 18 respectively, the equal fixed mounting in one end that two catch bar 17 are close to each other has the one end of carbon brush 19, the other end of two carbon brushes 19 all contacts with commutator 4, and the bottom side of two carbon brushes 19 contacts with the top of corresponding riser 8 respectively.

In this embodiment, one end of the first spring 21 is fixedly mounted on the inner wall of one side of the first chute 6, and the other end of the first spring 21 is fixedly connected with the first sliding plate 7, so that the vertical plate 8 can be pushed to reset through the first spring 21.

In this embodiment, casing 1's both sides all are provided with a plurality of draw-in grooves for the centre of a circle annular based on pivot 9, and the equal fixed mounting in one side that two limiting plates 10 are close to each other has the one end of spacer pin, and the other end of a plurality of spacer pins extends to respectively in the draw-in groove that corresponds, can carry on spacingly to limiting plate 10 through spacer pin and a plurality of draw-in grooves.

In this embodiment, the same sliding rod is fixedly mounted on the top inner wall and the bottom inner wall of the second sliding chute 13, the sliding rod is slidably connected to the second sliding plate 14, the top end of the second spring 22 is fixedly mounted on the bottom side of the second sliding plate 14, the bottom end of the second spring 22 is fixedly connected to the bottom inner wall of the second sliding chute 13, the second spring 22 can push the second sliding plate 14 to return, and the sliding rod can effectively guide the second spring 22 and the second sliding plate 14.

In this embodiment, the outside slidable mounting of casing 1 has annular sliding sleeve 20, and annular sliding sleeve 20 and two clearing hole 18 looks adaptations, and is provided with the buffer board on the inner wall of annular sliding sleeve 20, and the buffer board contacts with catch bar 17, can seal clearing hole 18 through annular sliding sleeve 20, can provide certain buffering to catch bar 17 through the buffer board.

In this embodiment, one side of limiting plate 10 is provided with the pull ring, and fixed cover is equipped with anti-skidding cover on the pull ring, is convenient for the operator to operate through the pull ring.

In the utility model, when in use, firstly, the power is switched on, the coil in the rotor 3 is powered under the action of the carbon brush 19 and the commutator 4, the rotor 3 drives the main shaft 2 to rotate under the combined action of the magnet 5 and the coil, when the maintenance or the replacement of the carbon brush 19 is needed, the power is switched off, the pull ring is pulled by holding the pull ring by hand or through related tools, so that the limit pin is separated from the clamping groove, meanwhile, the first sliding plate 7 extrudes the first spring 21, the pull ring is rotated to rotate the limit plate 10, the limit plate 10 rotates to drive the gear 11 and the rotating plate 12 to synchronously rotate, the gear 11 rotates to drive the rack 15 to move downwards, the rack 15 moves downwards to drive the second sliding plate 14 to extrude the second spring 22 downwards along the sliding rod, the limit groove 16 is separated from the pushing rod 17 along with the rotation of the rotating plate 12, the limit plate 10 is fixed through the limit pin, the, the carbon brush 19 is pulled by the pushing rod 17, the carbon brush 19 is taken out from the through hole 18 for maintenance or replacement of the carbon brush 19, after the maintenance is completed, the carbon brush 19 is pushed in through the through hole 18 by the pushing rod 17, a certain support is provided for the carbon brush 19 under the action of the vertical plate 8, the annular sliding sleeve 20 slides downwards along the outer side of the shell 1, the pushing rod 17 is pushed while the annular sliding sleeve 20 slides downwards, the pushing rod 17 drives the carbon brush 19 to be in contact with the commutator 4, the limiting pin is separated from the clamping groove by the limiting plate 10 through the limiting plate 10, the limiting plate 10 rotates reversely, the limiting groove 16 on the rotating plate 12 is clamped at the outer side of the pushing rod 17, the pulling ring is loosened, the first sliding plate 7 is pushed to slide along the first sliding groove 6 under the action of the first spring 21, the vertical plate 8 drives the rotating shaft 9 to pull the limiting plate 10 to enable the limiting pin to enter the clamping groove, a certain pushing force is, so that the carbon brush 19 is kept in better contact with the commutator 4 to complete the installation.

The above, only be the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the present invention, the technical solution and the utility model concept of the present invention should be covered within the protection scope of the present invention.

Claims

1. A carbon brush device of a direct current motor comprises a shell (1), wherein the bottom end of a main shaft (2) is rotatably installed on the inner wall of the bottom of the shell (1), the top end of the main shaft (2) extends to the upper portion of the shell (1), a plurality of magnets (5) are arranged on the inner wall of the shell (1), a rotor (3) and a commutator (4) are sequentially arranged on the outer side of the main shaft (2) from top to bottom, the carbon brush device is characterized in that first sliding grooves (6) are respectively formed in two sides of the inner wall of the bottom of the shell (1), first sliding plates (7) are respectively slidably installed in the two first sliding grooves (6), vertical plates (8) are respectively and fixedly installed on the top sides of the two first sliding plates (7), one ends of rotating shafts (9) are respectively rotatably installed on one side, away from the two vertical plates (8), the other ends of the two rotating shafts (9) respectively extend to two sides of, the gear (11) is rotatably arranged on the inner walls of two sides of the shell (1), the two gears (11) are respectively connected with the corresponding rotating shafts (9) in a sliding manner, the outer sides of the two rotating shafts (9) are fixedly sleeved with rotating plates (12), the inner walls of two sides of the shell (1) are respectively provided with second sliding chutes (13), second sliding plates (14) are respectively arranged in the two second sliding chutes (13) in a sliding manner, one sides of the two second sliding plates (14) close to each other are respectively and fixedly provided with racks (15), the two gears (11) are respectively meshed with the corresponding racks (15), the two rotating plates (12) are respectively provided with limiting grooves (16), pushing rods (17) are respectively and movably arranged in the two limiting grooves (16), the two sides of the shell (1) are respectively provided with through holes (18), and the ends of the two pushing rods (17) far away from each other extend into the corresponding through holes (18), one ends, close to each other, of the two push rods (17) are fixedly provided with one ends of carbon brushes (19), the other ends of the two carbon brushes (19) are in contact with the commutator (4), and the bottom sides of the two carbon brushes (19) are in contact with the top ends of corresponding vertical plates (8) respectively.

2. A dc motor carbon brush apparatus according to claim 1, wherein one end of the first spring (21) is fixedly installed on one side inner wall of the first sliding groove (6), and the other end of the first spring (21) is fixedly connected to the first sliding plate (7).

3. The direct-current motor carbon brush device according to claim 1, wherein a plurality of clamping grooves are annularly formed in both sides of the housing (1) based on the rotating shaft (9) as a circle center, one side of each of the two limiting plates (10) close to each other is fixedly provided with one end of a limiting pin, and the other ends of the limiting pins respectively extend into the corresponding clamping grooves.

4. The carbon brush device of a direct current motor according to claim 1, wherein the same sliding rod is fixedly installed on the top inner wall and the bottom inner wall of the second sliding chute (13), the sliding rod is slidably connected with the second sliding plate (14), the bottom side of the second sliding plate (14) is fixedly installed with the top end of the second spring (22), and the bottom end of the second spring (22) is fixedly connected with the bottom inner wall of the second sliding chute (13).

5. A dc motor carbon brush system according to claim 1, wherein an annular sliding sleeve (20) is slidably mounted on the outside of the housing (1), the annular sliding sleeve (20) is fitted into the two through holes (18), and a buffer plate is provided on the inner wall of the annular sliding sleeve (20) and contacts with the push rod (17).

6. A dc motor carbon brush apparatus according to claim 1, wherein a pull ring is provided on one side of the limiting plate (10), and an anti-slip sleeve is fixedly sleeved on the pull ring.