CN221151072U

CN221151072U - Brush motor

Info

Publication number: CN221151072U
Application number: CN202323118087.6U
Authority: CN
Inventors: 罗荣
Original assignee: Dongguan City Lianfeng Motor Co ltd
Current assignee: Dongguan City Lianfeng Motor Co ltd
Priority date: 2023-11-18
Filing date: 2023-11-18
Publication date: 2024-06-14
Anticipated expiration: 2033-11-18

Abstract

The brush motor comprises a stator (1) and a rotor (2), wherein two carbon brush holders (11) are arranged at one end of the stator (1), the two carbon brush holders (11) are oppositely arranged, a carbon brush (12) is slidably arranged in the carbon brush holders (11), and the carbon brush (12) is kept in contact with a commutator (21) on the rotor (2) under the action of a movable terminal (131) of a torsion spring (13); two inner arcs (14) are arranged on the inner wall of a stator core (17) of the stator (1), the two inner arcs (14) are oppositely arranged, and a winding space (15) for winding an enameled wire (22) is formed between the inner arcs (14) and the inner wall of the stator core (17) of the stator (1). The utility model acts on the carbon brush through the torsion spring, and maintains enough pressure, so that the carbon brush is always clung to the commutator, and the normal use of the motor is ensured; a winding space is formed between the inner circular arc and the inner wall of the stator core of the stator, so that the use amount of the enameled wire is reduced, and the cost is reduced slightly.

Description

Brush motor

Technical Field

The utility model relates to the technical field of motors, in particular to a brush motor.

Background

The carbon brush of the motor is worn along with the operation of the motor, and the carbon brush must be attached to the commutator, so an elastic device is needed to compress the carbon brush. In the prior art, a spiral spring is arranged in a mounting groove of a carbon brush frame to enable a carbon brush to be attached to a commutator, and as the use times of a motor are increased, the acting force of the spring is smaller and smaller, the pressure is insufficient, so that the effect of attaching the carbon brush to the commutator is poor, and the normal use of the motor is influenced. In addition, the stator winding frame consists of an iron core and plastic components arranged at two ends of the iron core, the plastic components arranged at two ends of the iron core are arranged and installed around the end face of the stator in a circle, the structure wastes enameled wires, and the cost is high.

Accordingly, there is a need for improvements and enhancements in the art.

Disclosure of utility model

Aiming at the problems in the prior art, the utility model aims to provide a brush motor which stabilizes the elastic acting force of an elastic device, ensures the normal use of the motor, reduces the use amount of enameled wires and reduces the slight cost.

The present utility model achieves the above object by the following means.

A brush motor comprises a stator and a rotor rotatably arranged in the stator, wherein one end of the stator is provided with two carbon brush holders, the two carbon brush holders are oppositely arranged, a carbon brush is slidably arranged in the carbon brush holders, and the carbon brush is kept in contact with a commutator on the rotor under the action of a movable terminal of a torsion spring; the inner wall of the stator core of the stator is provided with two inner arcs, the two inner arcs are oppositely arranged, and a winding space for winding the enameled wire is formed between the inner arcs and the inner wall of the stator core of the stator.

According to a further scheme of the utility model, two ends of the stator are provided with the brackets, the rotor is rotatably arranged on the two brackets, and the two carbon brush frames are arranged on one bracket.

According to a further aspect of the present utility model, the carbon brush holder has a guide groove, and the carbon brush is slidably mounted in the guide groove.

According to a further scheme of the utility model, the side wall of the guide groove is provided with an avoidance groove for avoiding the movable terminal of the torsion spring.

According to a further scheme of the utility model, the stator comprises a stator core, two members are arranged at two ends of the stator core, and the two members at the same direction and one end are oppositely arranged.

According to a further scheme of the utility model, a fixed column and a fixed sheet are arranged on the component, the torsion spring is sleeved on the fixed column, and the fixed terminal of the torsion spring is arranged on the fixed sheet.

In a further aspect of the present utility model, the member is provided with an insertion groove, and the fixing piece is inserted into the insertion groove.

According to a further scheme of the utility model, the stator core is formed by stacking a plurality of core sheets.

In a further aspect of the utility model, the outer side of the stator core has two outer planes that are parallel.

According to a further scheme of the utility model, the winding space is divided into a first winding space and a second winding space, and the first winding space and the second winding space are respectively positioned at two sides of a joint of the stator core of the stator and the inner arc.

The beneficial effects of the utility model are as follows:

due to the adoption of the structural design, the torsion spring acts on the carbon brush and keeps enough pressure continuously, so that the carbon brush is always clung to the commutator, and the normal use of the motor is ensured; a winding space is formed between the inner circular arc and the inner wall of the stator core of the stator, so that the use amount of the enameled wire is reduced, and the cost is reduced slightly.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an exploded structure of an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a bracket according to an embodiment of the present utility model;

Fig. 4 is a schematic structural view of a carbon brush holder according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of a component according to an embodiment of the present utility model;

Fig. 6 is a schematic structural diagram of a stator core according to an embodiment of the present utility model;

Fig. 7 is a schematic structural diagram of a core chip according to an embodiment of the present utility model.

In the figure:

1-stator, 2-rotor;

11-carbon brush holder, 12-carbon brush, 13-torsion spring, 14-inner arc, 15-winding space, 16-bracket, 17-stator core and 18-component;

21-a commutator and 22-enameled wires;

131-movable terminals, 132-fixed terminals;

111-a guide groove and 112-a avoiding groove;

181-fixing columns, 182-fixing sheets and 183-inserting grooves;

171-iron core piece, 172-outer plane;

151-first winding space, 152-second winding space.

Description of the embodiments

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Examples

As shown in fig. 1 and 2, the brush motor of the present application includes a stator 1 and a rotor 2 rotatably disposed in the stator 1, two carbon brush holders 11 are disposed at one end of the stator 1, the two carbon brush holders 11 are disposed opposite to each other, a carbon brush 12 is slidably mounted in the carbon brush holders 11, and along with the increase of the number of times of use of the carbon brush 11, the carbon brush 11 keeps contact with a commutator 21 on the rotor 2 under the action of a movable terminal 131 of a torsion spring 13, and the movable terminal 131 of the torsion spring 13 abuts against the carbon brush 12, so that the torsion spring 13 keeps enough pressure on the carbon brush 12 continuously, and the carbon brush 12 is always attached to the commutator 21, thereby ensuring normal use of the motor; two inner circular arcs 14 are arranged on the inner wall of the stator core 17 of the stator 1, the two inner circular arcs 14 are oppositely arranged, a winding space 15 for winding the enameled wire 22 is formed between the inner circular arc 14 and the inner wall of the stator core 17 of the stator 1, and the winding space 15 is formed between the inner circular arc 14 and the inner wall of the stator core 17 of the stator 1, so that plastic components arranged and installed around the end face of the stator are not used any more, the usage amount of the enameled wire is reduced, and the cost is reduced slightly.

As shown in fig. 1-3, two ends of the stator 1 are respectively provided with a bracket 16, specifically, the bracket 16 includes an end plate and two L-shaped side plates disposed at two sides of the end plate, the rotor 2 is rotatably mounted on the end plates of the two brackets 16, the two carbon brush holders 11 are respectively disposed on the vertical portions of the two L-shaped side plates, and the bracket 16 is mounted on the stator 1 through the horizontal portions of the two L-shaped side plates.

As shown in fig. 4, the carbon brush holder 11 has a guiding groove 111, the carbon brush 11 is slidably mounted in the guiding groove 111, and a recess 112 for receiving the movable terminal 131 of the torsion spring 13 is provided on the side wall 111 of the guiding groove, so that the movable terminal 131 of the torsion spring 13 can pass through the recess 112 to press the carbon brush 11.

As shown in fig. 6 and 7, the stator 1 includes a stator core 17, the stator core 17 is formed by stacking a plurality of core plates 171, two outer planes 172 parallel to each other are provided on the outer side, two members 18 are provided on two ends of the stator core 17, two members 18 on one end in the same direction are oppositely provided on two sides of the bracket 16, and end surfaces of the two members 18 are flush with the two outer planes 172; the winding space 15 on the stator 1 is divided into a first winding space 151 and a second winding space 152, and the first winding space 151 and the second winding space 152 are respectively located at two sides of the connection part of the stator core 17 and the inner arc 14 of the stator 1.

As shown in fig. 5, the member 18 is provided with a fixing column 181, and the torsion spring 13 is sleeved on the fixing column 181; the member 18 is provided with an insertion groove 183, the fixing piece 182 is inserted into the insertion groove 183, and the fixing terminal 132 of the torsion spring 13 is disposed on the fixing piece 182.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A brush motor comprising a stator (1) and a rotor (2) rotatably arranged in the stator (1), characterized in that: one end of the stator (1) is provided with two carbon brush holders (11), the two carbon brush holders (11) are oppositely arranged, a carbon brush (12) is slidably arranged in the carbon brush holders (11), and the carbon brush (12) is kept in contact with a commutator (21) on the rotor (2) under the action of a movable terminal (131) of a torsion spring (13); two inner arcs (14) are arranged on the inner wall of a stator core (17) of the stator (1), the two inner arcs (14) are oppositely arranged, and a winding space (15) for winding an enameled wire (22) is formed between the inner arcs (14) and the inner wall of the stator core (17) of the stator (1).

2. A brushed motor as in claim 1 wherein: two ends of the stator (1) are provided with a bracket (16), the rotor (2) is rotatably arranged on two brackets (16), and two carbon brush holders (11) are arranged on one bracket (16).

3. A brushed motor as in claim 2 wherein: the carbon brush holder (11) has a guide groove (111), and the carbon brush (12) is slidably mounted in the guide groove (111).

4. A brushed motor according to claim 3, wherein: the side wall of the guide groove (111) is provided with a avoidance groove (112) for avoiding the movable terminal (131) of the torsion spring (13).

5. The brushed motor of claim 4 wherein: the stator (1) comprises a stator core (17), two members (18) are arranged at two ends of the stator core (17), and the two members (18) at the same direction and one end are oppositely arranged.

6. A brushed motor as in claim 5 wherein: the member (18) is provided with a fixing column (181) and a fixing sheet (182), the torsion spring (13) is sleeved on the fixing column (181), and the fixing terminal (132) of the torsion spring (13) is arranged on the fixing sheet (182).

7. The brushed motor of claim 6 wherein: the member (18) is provided with an insertion groove (183), and the fixing piece (182) is inserted into the insertion groove (183).

8. The brushed motor of claim 7 wherein: the stator core (17) is formed by stacking a plurality of core pieces (171).

9. The brushed motor of claim 8 wherein: the outer side of the stator core (17) has two outer planes (172) which are parallel.

10. A brushed motor as in claim 9 wherein: the winding space (15) is divided into a first winding space (151) and a second winding space (152), and the first winding space (151) and the second winding space (152) are respectively positioned at two sides of the joint of the stator core (17) of the stator (1) and the inner arc (14).