CN209748365U

CN209748365U - Motor with multilayer electric brush

Info

Publication number: CN209748365U
Application number: CN201920520445.0U
Authority: CN
Inventors: 蔡章锦; 陈祉浩
Original assignee: Guangdong Chaoli Motor Co Ltd
Current assignee: Guangdong Chaoli Motor Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2019-12-06
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses a motor with multilayer brush, including casing, end cover, output shaft and a pair of brush subassembly, the end cover cartridge in on the casing, the output shaft rotate set up in just be located in the casing end cover center department is equipped with the commutator, the brush subassembly set up in the end cover and with commutator both sides elastic contact, the brush subassembly include double-deck brush and parallel stack in the outer individual layer brush of double-deck brush, the end cover bilateral symmetry is equipped with the open slot, end cover one side be equipped with along open slot fixed mounting's mount pad, the mount pad is provided with and is used for the cartridge a pair of oblique slot that is "eight" font setting of brush subassembly, seted up on the mount pad both sides wall and extended to connect the electric export in the oblique slot. The utility model discloses constitute by double-deck brush and individual layer brush, can't the during operation after double-deck brush wearing and tearing are serious, the automatic operating condition that gets into of individual layer brush to the life of motor has effectively been prolonged.

Description

Motor with multilayer electric brush

Technical Field

The utility model relates to a brush motor field especially relates to a motor with multilayer brush.

Background

The brush motor has a stator in which a field magnet is fixed to an inner peripheral surface of a housing, and an armature in which a winding wire of each pole is wound around an iron core is provided on a rotating shaft rotatably supported in the housing to form a rotor. The brush is brought into sliding contact with the outer peripheral surface of the commutator to supply power to the armature, and the direction of current flowing through the winding wire is continuously reversed to change the magnetic field with the field magnet, thereby rotating the rotor. The existing motor basically only has one layer of electric brush, the electric brush belongs to a wearing part, the electric brush is worn and consumed continuously in the rotating process of the commutator, when the electric brush is worn to a certain degree, the whole motor cannot work and is scrapped, and the electric brush becomes an important factor influencing the service life of the motor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a motor with multilayer brush is provided, the brush subassembly has individual layer brush and double-deck brush, can't the during operation after the double-deck wearing and tearing are serious, and the individual layer brush gets into operating condition automatically to effectively prolong the life of motor.

In order to achieve the above object, the utility model discloses a motor with multilayer brush, its characterized in that, including casing, end cover, output shaft and a pair of brush subassembly, the end cover cartridge is in on the casing, the output shaft rotate set up in the casing and be located the end cover center department and be equipped with the commutator, the brush subassembly set up in the end cover and with commutator both sides elastic contact, the brush subassembly include double-deck brush and parallel stack in the outer single-deck brush of double-deck brush;

The utility model discloses an electric brush assembly, including end cover, end cover bilateral symmetry, end cover one side is equipped with along open slot fixed mounting's mount pad, the mount pad is provided with and is used for the cartridge a pair of oblique slot that is "eight" font setting of brush assembly, seted up on the mount pad both sides wall and extended to connect the electric outlet in the oblique slot.

Preferably, the single-layer brush comprises a first connecting portion, a first fixing portion and a first bending portion connected with the first connecting portion and the first fixing portion, and the first connecting portion and the first fixing portion are located on the first bending portion and are respectively provided with an inwardly protruding bump.

Preferably, the double-layer brush is formed by folding the first brush and the second brush along a crease, the double-layer brush comprises a second connecting portion, a second fixing portion and a second bending portion connected with the second connecting portion and the second fixing portion, and edges of two sides of the tail end of the second fixing portion of the second brush are bent upwards to form a brush groove.

Preferably, the end of the first fixing portion of the single-layer brush is elastically pressed in the brush groove.

Preferably, the center of the mounting seat is provided with a positioning hole, a positioning block with the same size as the positioning hole is arranged in the end cover, an opening at the bottom of the electric outlet extends outwards to form a protruding limiting flange, and the mounting seat is connected with the positioning block in the open slot in a fixed manner and the limiting flange is abutted to the edge of the open slot.

Preferably, the single-layer brush is overlapped with the double-layer brush, the first connecting portion, the second connecting portion, the first fixing portion and the second fixing portion are respectively inserted into the electric connection outlet and the inclined slot, and the salient points on the single-layer brush are respectively abutted against the electric connection outlet and the inclined slot and are used for clamping and fixing.

preferably, the first fixing portion and the second fixing portion extend to the center of the end cover along the inclined insertion groove to be in elastic contact with the commutator, and the first connecting portion and the second connecting portion extend outwards along the power connection outlet to be electrically connected with a wire.

Preferably, a plurality of heat dissipation holes are formed in the top of the end cover along the circumferential direction.

Compared with the prior art, the beneficial effects of the utility model reside in that:

The utility model discloses a brush subassembly has double-deck brush and individual layer brush, guarantees through the slot on the mount pad that the brush hugs closely and makes between it elastic contact on the commutator, and double-deck brush is formed by two brushes are folding, and when the first slice brush wearing and tearing of double-deck brush are serious unable during operation, the second piece brush just can be automatic and commutator elastic contact, also wear and tear when the second layer brush and seriously unable during operation, individual layer brush just can be automatic with commutator elastic contact effectively prolongs the life of motor, compares and needs artifical the maintenance to change in the past, and efficiency is higher, the cost is lower.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall structure of the end cap of the present invention;

FIG. 3 is a schematic view showing a structure of a portion A of FIG. 2;

FIG. 4 is a schematic structural view of the brush assembly of the present invention;

fig. 5 is a schematic view of the installation structure of the brush assembly and the mounting seat of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, a motor with multiple layers of brushes includes a casing 1, an end cap 2, an output shaft 3, and a pair of brush assemblies 5, wherein the end cap 2 is inserted into an opening end of the casing 1, the output shaft 3 is rotatably disposed in the casing 1, and one end of the output shaft is provided with a commutator 4.

Referring to fig. 4, the brush assembly 5 is installed in the end cap 2 and elastically contacts both sides of the commutator 4. The brush assembly 5 includes a double-layer brush 15 and a single-layer brush 14 superimposed in parallel on the double-layer brush 15.

Referring to fig. 2 and 5, open grooves 12 are symmetrically formed in two sides of the end cover 2, a mounting base 13 is fixedly mounted on one side of the end cover along one of the open grooves 12, the open groove on the other side is used for dissipating heat, the mounting base 13 is provided with a pair of oblique slots 131 which are used for inserting the brush component 5 and are arranged in a splayed shape, and two side walls of the rear end of the mounting base 13 are provided with power connection outlets 132 which extend into the oblique slots 131.

Referring to fig. 2 and 3, a positioning hole 133 is disposed at the center of the mounting base 13, a positioning block 121 having a size equivalent to that of the positioning hole 133 is disposed in the end cover, a limiting flange 134 is disposed at an opening at the bottom of the power connection outlet 132 and extends outward, the mounting base 13 is fixedly connected to the positioning block 121 along the opening slot 12, and the limiting flange 134 abuts against the edge of the opening slot 12, so that the power connection outlet 132 is limited outside the opening slot 12.

Referring to fig. 1, a plurality of heat dissipation holes 112 are formed in the top of the end cap 2 along the circumferential direction, so that a heat dissipation effect is achieved, the brush is prevented from being heated when being powered on in the using process, and heat is dissipated through the heat dissipation holes 112.

Referring to fig. 4, the single-layer brush 14 includes a first connection portion 141, a first fixing portion 142, and a first bent portion 143 connecting the first connection portion 141 and the second connection portion 142, the first connection portion 141 and the first fixing portion 142 are located at the first bent portion 143 and are respectively provided with an inwardly protruding bump 140, the double-layer brush 15 is formed by folding the first sheet of brush 50 and the second sheet of brush 51 along a fold 150, the double-layer brush 15 includes a second connection portion 151, a second fixing portion 152, and a second bent portion 153 connecting the second connection portion 151 and the second fixing portion 152, two side edges of a distal end of the second fixing portion 152 of the second sheet of brush 51 are bent upward and extended to form a brush groove 154, and in an assembled state, a distal end of the first fixing portion 142 of the single-layer brush 14 is elastically pressed in the brush groove 154, so that the brushes of the brush assemblies 5 are in close contact.

Referring to fig. 5, an included angle of 100 ° to 130 ° is formed between the power connection outlet 132 and the inclined slot 131, the single-layer brush 14 overlaps the double-layer brush 15, the first and second connecting portions 141, 142 and the first and second fixing portions 142, 152 are folded to an included angle of 100 ° to 130 ° along the first and second folded portions 143, 153, and are respectively inserted into the power connection outlet 132 and the inclined slot 131, and the protruding points 140 on the single-layer brush 14 respectively abut against the power connection outlet 132 and the inclined slot 131 to achieve clamping fixation, so that the single-layer brush 14 and the double-layer brush 15 are not easily detached.

The first and second fixing portions 142, 143 extend obliquely to the center of the end cap 2 along the oblique insertion slot 131 to elastically contact with the commutator 4, the brush assemblies 5 at both ends are splayed after being inserted, and the brush assemblies 5 at both ends are tightly attached to both sides of the commutator 4 under the action of elastic force through the oblique insertion slot 131.

The utility model discloses a first, second connecting portion 141, 152 are connected with the wire electricity along connecing the outside extension of electric outlet 132, make the motor get into operating condition.

after the second layer brush 51 in the double-layer brush 15 is worn out, the second brush 51 takes over the first brush 50 to continue working, and after the two brushes in the double-layer brush 15 are worn out, the single-layer brush 14 takes over the double-layer brush 15 to continue working, so that the single-layer brush 14 automatically and elastically contacts with the commutator 4 to enter a working state after the double-layer brush 15 is worn out, and the service life of the motor is prolonged.

of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all modifications made according to the spirit of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A motor with multilayer brushes is characterized by comprising a machine shell, an end cover, an output shaft and a pair of brush components, wherein the end cover is inserted on the machine shell, the output shaft is rotatably arranged in the machine shell, a commutator is arranged at the center of the end cover, the brush components are arranged in the end cover and elastically contacted with two sides of the commutator, and each brush component comprises a double-layer brush and a single-layer brush which is parallelly overlapped outside the double-layer brush;

2. The electric motor of claim 1, wherein the single-layer brush comprises a first connecting portion, a first fixing portion, and a first bending portion connecting the first connecting portion and the first fixing portion, and the first connecting portion and the first fixing portion are provided with inwardly protruding bumps at the first bending portion, respectively.

3. The motor of claim 2, wherein the double-layer brush is formed by folding a first brush and a second brush along a fold, the double-layer brush comprises a second connecting portion, a second fixing portion and a second bending portion connecting the second connecting portion and the second fixing portion, and edges of two sides of a terminal end of the second fixing portion of the second brush are bent upward to form a brush slot.

4. A motor having multi-layer brushes as set forth in claim 3 wherein said first stationary portion end of said single layer brush is resiliently compressed within said brush slot.

5. the motor with multilayer brushes according to claim 1, wherein a positioning hole is formed in the center of the mounting seat, a positioning block with a size equivalent to that of the positioning hole is arranged in the end cover, a limiting flange is protruded from an opening at the bottom of the electric outlet in an outward extending manner, the mounting seat is fixedly connected with the positioning block along the inside of the opening groove, and the limiting flange abuts against the edge of the opening groove.

6. The electric machine with multiple layers of brushes according to claim 3 or 4, wherein the single layer brush overlaps the double layer brush, and the first and second connecting portions and the first and second fixing portions are respectively inserted into the electric outlet and the slanted slot, and the protruding points on the single layer brush respectively abut against the electric outlet and the slot for clamping fixation.

7. The motor of claim 6, wherein the first and second fixing portions extend along the slanted slot to a center of the end cap to elastically contact the commutator, and the first and second connecting portions extend along the power outlet to an outside for electrically connecting to a wire.

8. The motor of claim 1, wherein the top of the end cap has a plurality of heat dissipation holes formed along a circumferential direction.