CN217508554U

CN217508554U - Direct current brush motor

Info

Publication number: CN217508554U
Application number: CN202221136360.0U
Authority: CN
Inventors: 吴先财; 方绍林; 杨忠
Original assignee: Zhejiang Wanguan Motor Co ltd
Current assignee: Zhejiang Wanguan Motor Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-09-27
Anticipated expiration: 2032-05-12

Abstract

The utility model discloses a direct current brush motor, which comprises a shell, magnetic steel, a rotor component, a commutator, a brush component and a brush holder; the rotor assembly comprises a rotor shaft, an enameled wire, an iron core and a fan, wherein the iron core is provided with a plurality of winding grooves, and the enameled wire is wound in the winding grooves; the commutator is fixed on the rotor shaft; the electric brush assembly comprises an electric brush, an elastic sheet and an electric connecting sheet, and the brush holder is fixed on the shell; the outer side of the brush holder is provided with a circuit board assembly, the plastic cover is sleeved on the brush holder, and the circuit board assembly is positioned on the inner side of the plastic cover; the carbon brush fixing piece is fixedly clamped on the brush holder, the carbon brush is arranged in the carbon brush fixing shell, one end, facing the axis of the motor, of the carbon brush is in matched contact with one hook of the commutator, and the end, deviating from the axis of the motor, of the carbon brush is provided with the elastic piece. This direct current has brush motor, can effectively prevent the damage of circuit board subassembly, the life of extension motor is favorable to motor element's automated production simultaneously.

Description

Direct current brush motor

Technical Field

The utility model relates to the technical field of motors, especially, relate to a direct current has brush motor.

Background

A brushed electric motor is a rotating electric machine that converts electrical energy into mechanical energy or mechanical energy into electrical energy, with a brush arrangement incorporated therein. Unlike brushless motors, brush devices are used to draw in and out voltage and current. The brush motor is the basis of all motors, and has the characteristics of quick start, timely braking, capability of smoothly regulating the speed in a large range, relatively simple control circuit and the like.

At present, a plurality of devices or electric appliances adopt brush motors, and particularly, the direct current brush motors are widely used. The plastic cover of the existing direct current brush motor is assembled on the circuit board assembly, so that the circuit board assembly is easily damaged, meanwhile, the existing carbon brush of the brush motor is connected with an electric element through a copper wire or a lead wire, the copper wire or the lead wire needs to be installed manually, and the production automation is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a direct current has brush motor to solve the problem that above-mentioned prior art exists, can effectively prevent the damage of circuit board subassembly, the life of extension motor is favorable to motor element's automated production simultaneously.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a direct current brush motor, which comprises a shell, magnetic steel fixed on the inner wall of the shell, a rotor assembly sleeved in the shell, a commutator and a brush assembly sleeved on the commutator; the rotor assembly comprises a rotor shaft, an enameled wire, an iron core fixed on the rotor shaft and a fan fixed on the rotor shaft, wherein a plurality of winding grooves are formed in the iron core, and the enameled wire is wound in the winding grooves; the commutator is fixed on the rotor shaft;

the electric brush assembly comprises a brush holder and a carbon brush arranged in the brush holder, and the brush holder is fixed on the shell; a circuit board assembly is arranged on the outer side of the brush holder, a plastic cover is sleeved on the brush holder, and the circuit board assembly is positioned on the inner side of the plastic cover; the carbon brush fixing shell is fixedly clamped on the brush holder, the carbon brush is arranged in the carbon brush fixing shell, one end, facing the axis of the motor, of the carbon brush is in matched contact with one hook of the commutator, and the end, deviating from the axis of the motor, of the carbon brush is provided with an elastic sheet.

Preferably, the top both sides of brush yoke an organic whole is provided with the trip, the bottom both sides of plastics cover all are provided with the draw-in groove that is used for with the trip assembly.

Preferably, the brush holder is provided with a carbon brush hole for mounting the carbon brush, and the carbon brush extends out of the carbon brush hole and abuts against the outer surface of the commutator.

Preferably, an insulating sleeve is installed in the winding slot, and the enameled wire is wound in the insulating sleeve.

Preferably, the iron core includes main iron core and installs the insulating end plate at main iron core both ends, a plurality of first wire winding grooves have been seted up on the main iron core, insulating end plate on seted up a plurality of with first wire winding groove matched with second wire winding groove, first wire winding groove with second wire winding groove constitutes the wire winding groove.

Preferably, the number of the magnetic steels is two, and the two magnetic steels are respectively arranged on the inner wall of the shell at equal intervals along the circumferential direction; a U-shaped spring is abutted between the two pieces of magnetic steel.

Preferably, both ends of the rotor shaft are provided with oil-containing bearings; one end of the rotor shaft penetrates through the brush holder and then is installed on the circuit board assembly through the oil-retaining bearing, and the other end of the rotor shaft is assembled on the shell through the oil-retaining bearing.

Preferably, the other end of the elastic sheet is connected with an electric connecting sheet.

The utility model discloses following beneficial technological effect has been gained for prior art:

the direct current brush motor of the utility model installs the enameled wire on the iron core, and the magnetic steel is fixed inside the shell, thus effectively reducing the volume of the motor; the plastic cover is assembled on the brush holder, so that the damage rate of the circuit board assembly is effectively reduced, the assembly is more convenient, and the service life is longer; the spring plate replaces copper wire connection, so that the production automation of the direct current motor element can be realized; the utility model provides a direct current has brush motor, complete machine easy dismounting, and overall structure is compact, and the volume is littleer, and the operation is more stable, uses safelyr.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of a motor assembly of a DC brush motor;

FIG. 2 is a first overall view of a DC brush motor;

FIG. 3 is a second overall view of a DC brush motor;

FIG. 4 is an outside view of the plastic cage;

FIG. 5 is a block diagram of a plastic cover;

FIG. 6 is a view of the structure of the brush holder;

FIG. 7 is an overall view of the brush holder;

FIG. 8 is a side view of a plastic housing of a DC brushed motor;

wherein, 1 a machine shell; 2, magnetic steel; a 3U-shaped spring; 4, enamelled wires; 5, a first oil-containing bearing; 6 a rotor shaft; 7 a main iron core; 8 insulating the end plate; 9 a commutator; 10, tightening a ring; 11, a second oil-containing bearing; 12, a brush holder; 13 connecting the electric piece; 14 a circuit board assembly; 15 a plastic cover; 16 spring pieces; 17 carbon brushes; 18 an insulating sleeve; 19 a first winding slot; 20 card slots; 21, hooking.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1-8, the embodiment provides a dc brush motor, which includes a casing 1, a magnetic steel 2 fixed on an inner wall of the casing 1, a rotor assembly sleeved in the casing 1, a commutator 9, and a brush assembly sleeved on the commutator 9; the rotor assembly comprises a rotor shaft 6, an enameled wire 4, an iron core fixed on the rotor shaft 6 and a fan fixed on the rotor shaft 6, wherein a plurality of winding grooves are formed in the iron core, and the enameled wire 4 is wound in the winding grooves; the commutator 9 is fixed on the rotor shaft 6;

the brush component comprises a brush holder 12 and a carbon brush 17 arranged in the brush holder 12, and the brush holder 12 is fixed on the machine shell 1; a circuit board assembly 14 is arranged on the outer side of the brush holder 12, a plastic cover 15 is sleeved on the brush holder 12, and the circuit board assembly 14 is positioned on the inner side of the plastic cover 15; the carbon brush fixing shell is fixedly clamped on the brush frame 12, the carbon brush 12 is arranged in the carbon brush fixing shell, one end of the carbon brush 12 facing the axis of the motor is in matched contact with one hook of the commutator 9, and one end of the carbon brush 12 departing from the axis of the motor is provided with an elastic sheet 16.

By adopting the device, the enameled wire 4 is arranged on the iron core, and the magnetic steel 2 is fixed on the inner wall of the shell 1, so that the overall volume of the motor is reduced; the plastic cover 15 is assembled on the brush holder 12, so that the damage rate of the circuit board assembly 14 is effectively reduced, the assembly is more convenient, and the service life is longer; the spring plate replaces copper wire connection, so that the production automation of the direct current motor element can be realized; the utility model provides a direct current has brush motor, complete machine easy dismounting, and overall structure is compact, and the volume is littleer, and the operation is more stable, uses safelyr.

Specifically, the top both sides of brush yoke 12 an organic whole is provided with trip 21, and the bottom both sides of plastics cover 15 all are provided with the draw-in groove 20 that is used for with the assembly of trip 21, and plastics cover 15 passes through draw-in groove 20 to be installed on brush yoke 12, realizes easy dismounting's purpose, can also prevent circuit board assembly 14's damage.

The brush holder 12 is provided with a hole for mounting an electric connection piece, and the carbon brush 17 is clamped on the elastic sheet 16 and extends out to abut against the outer surface of the commutator 9. Specifically be carbon brush set casing fixed joint on brush yoke 12, carbon brush 12 sets up in the carbon brush set casing, and the one end that carbon brush 12 faced the motor axle center stretches out carbon brush hole and a couple phase-match contact of commutator 9, and the one end that carbon brush 12 deviates from the motor axle center is provided with shell fragment 16, and the other end of shell fragment is connected with electrical connection piece 13, is connected with other electric elements through electrical connection piece 13, replaces copper connection through shell fragment 16, can realize the automation of direct current motor element production.

Further, an insulating sleeve 18 is installed in the winding slot, and the enameled wire 4 is wound in the insulating sleeve 18. The iron core includes main iron core 7 and installs the insulating end plate 8 at main iron core both ends, has seted up a plurality of first wire winding grooves 19 on the main iron core 7, has seted up a plurality ofly on the insulating end plate 8 with first wire winding groove 19 matched with second wire winding groove, first wire winding groove 19 and second wire winding groove constitution wire winding groove.

In order to prevent the magnetic steel 2 from moving, two magnetic steels 2 are arranged on the inner wall of the machine shell 1 at equal intervals along the circumferential direction; the both sides of magnet steel 2 are provided with the draw-in groove, and magnet steel 2 is supported between to lean on to have U type spring 3, and U type spring 3 is favorable to fastening magnet steel 2, prevents that magnet steel 2 from droing, avoids magnet steel 2 to produce radial movement in casing 1, guarantees the reliability of mechanism.

Two ends of the rotor shaft 6 are provided with a first oil-retaining bearing 5 and a second oil-retaining bearing 11; one end of the rotor shaft 6 is provided with a clamping ring 10 after penetrating through a brush holder 12 and is arranged on a circuit board assembly 14 through an oil-retaining bearing I11, and the other end of the rotor shaft is arranged on the machine shell 1 through an oil-retaining bearing I5. This mode, the oiliness bearing is installed at 6 both ends of rotor shaft, avoids 6 radial movement of rotor shaft to produce, prevents that rotor shaft 6 and casing 1 from producing the collision, is favorable to prolonging the life of rotor shaft 6.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for those skilled in the art, the idea of the present invention may be changed in the specific embodiments and the application range. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a direct current has brush motor which characterized in that: the magnetic steel brush assembly comprises a machine shell, magnetic steel fixed on the inner wall of the machine shell, a rotor assembly sleeved in the machine shell, a commutator and a brush assembly sleeved on the commutator; the rotor assembly comprises a rotor shaft, an enameled wire, an iron core fixed on the rotor shaft and a fan fixed on the rotor shaft, wherein a plurality of winding grooves are formed in the iron core, and the enameled wire is wound in the winding grooves; the commutator is fixed on the rotor shaft;

2. The direct current brushed motor according to claim 1, characterized in that: the top both sides of brush yoke an organic whole is provided with the trip, the bottom both sides of plastics cover all are provided with the draw-in groove that is used for with the trip assembly.

3. The direct current brushed motor according to claim 1, characterized in that: and the brush holder is provided with a carbon brush hole for mounting the carbon brush, and the carbon brush extends out of the carbon brush hole and abuts against the outer surface of the commutator.

4. The direct current brushed motor according to claim 1, characterized in that: an insulating sleeve is installed in the winding groove, and the enameled wire is wound in the insulating sleeve.

5. The direct current brushed motor according to claim 1, characterized in that: the iron core includes main iron core and installs the insulating end plate at main iron core both ends, a plurality of first wire winding grooves have been seted up on the main iron core, insulating end plate on seted up a plurality of with first wire winding groove matched with second wire winding groove, first wire winding groove with second wire winding groove constitutes the wire winding groove.

6. The direct current brushed motor according to claim 1, characterized in that: the two magnetic steels are arranged on the inner wall of the shell at equal intervals along the circumferential direction; a U-shaped spring is abutted between the two pieces of magnetic steel.

7. The direct current brushed motor according to claim 1, characterized in that: two ends of the rotor shaft are provided with oil-retaining bearings; one end of the rotor shaft penetrates through the brush holder and then is installed on the circuit board assembly through the oil-retaining bearing, and the other end of the rotor shaft is assembled on the shell through the oil-retaining bearing.

8. The direct current brushed motor according to claim 1, characterized in that: the other end of the elastic sheet is connected with an electric connecting sheet.