CN219287269U

CN219287269U - Motor brush carrier structure and motor

Info

Publication number: CN219287269U
Application number: CN202223612460.9U
Authority: CN
Inventors: 陈一江
Original assignee: Ningbo Jiangyu Electric Appliance Co ltd
Current assignee: Ningbo Jiangyu Electric Appliance Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-30
Anticipated expiration: 2032-12-30

Abstract

The application relates to the technical field of motors, especially, relate to a brush yoke structure and motor, include: the four brush holders are arranged on the periphery of the rotor in sequence in an annular array mode, and every two of the four brush holders are connected into a whole. The brush assembly comprises brush heads, each brush frame is provided with a chute pointing to the axis of the rotor, each brush head is respectively inserted into each chute and can be electrically contacted with the rotor, and each brush head is electrically connected with the brush frame where the brush head is located. The brush frames are integrally connected, and the copper sheets conduct current, so that the structure is simplified, the current conduction amount of the current is greatly increased, the motor power is increased, and the motor working efficiency is improved relative to the conducting mode of the lead wires.

Description

Motor brush carrier structure and motor

Technical Field

The application relates to the technical field of motors, and more particularly relates to a motor brush holder structure and a motor.

Background

The motor refers to an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction. The structure of the direct current motor mainly comprises a stator and a rotor. After the coils on the rotor are electrified, the coils are stressed in a magnetic field generated by the stator so as to enable the rotor to rotate. The direct current brush motor is in electrical contact with the coils of the rotor through the brushes, so that the coils on the rotor are continuously electrified when the rotor rotates. Specifically, at least two brush holders are arranged on a motor rear cover and are respectively connected with the positive electrode and the negative electrode of a power supply, and brushes are inserted into sliding grooves of each brush holder. After the rear cover is covered, the two electric brushes are respectively abutted against the electric connection sheets at the two ends of the coil on the rotor, so that current passes through the coil.

For more brushes, multiple brush holders are required to be simultaneously connected to the positive or negative poles of the power supply. If four brushes are used, four brush holders are needed, two brush holders are connected with the positive electrode, and two brush holders are connected with the negative electrode. The current mode is that one of two brush holders with the same poles needs to be connected with a power supply, then the second brush holder is connected with the first brush holder through a wire, the current conduction rate is lower, the motor power is lower, and the motor working efficiency is lower.

Disclosure of Invention

In order to overcome the problems existing in the related art to at least a certain extent, the purpose of the application is to provide a motor brush frame structure and a motor, which can solve the problems that the current conduction rate is lower due to the fact that the existing direct-current motor brush frame is connected through a wire, so that the motor power is lower, and the motor working efficiency is lower. The preferred technical solutions of the technical solutions provided in the present application can produce a number of technical effects described in detail below.

The application provides a motor brush yoke structure, include:

the four brush holders are sequentially arranged on the periphery of the rotor in an annular array manner, and every two of the four brush holders are connected into a whole;

the brush assembly comprises brush heads, each brush frame is provided with a chute pointing to the axis of the rotor, each brush head is respectively inserted into each chute and can be electrically contacted with the rotor, and each brush head is electrically connected with the brush frame where the brush head is located.

Optionally, the first brush holder and the second brush holder are integrally connected, and the third brush holder and the fourth brush holder are integrally connected.

Optionally, the angle between the sliding groove on the first brush holder and the sliding groove on the second brush holder is 120 °, the angle between the sliding groove on the second brush holder and the sliding groove on the third brush holder is 60 °, and the angle between the sliding groove on the third brush holder and the sliding groove on the fourth brush holder is 60 °.

Optionally, the brush assembly further comprises:

the brush head is connected with the brush frame through the connecting wire;

the elastic piece is connected to the tail end of the brush head, the head end of the brush head is in electrical contact with the rotor, and one end, far away from the brush head, of the elastic piece is abutted to the inner wall of the motor through the elastic piece.

Optionally, the elastic element is a spring.

The application provides a motor, comprising a motor brush frame structure as described in any one of the above.

Optionally, the method further comprises:

and the number of poles of the stator is six.

Optionally, the method further comprises:

and the rotor is a wave winding type rotor.

The technical scheme that this application provided can include following beneficial effect:

the brush frames are integrally connected, and the copper sheets conduct current, so that the structure is simplified, the current conduction amount of the current is greatly increased, the motor power is increased, and the motor working efficiency is improved relative to the conducting mode of the lead wires.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a motor brush holder structure shown according to some exemplary embodiments;

FIG. 2 is an isometric schematic view of a motor brush holder structure according to some exemplary embodiments;

FIG. 3 is a schematic diagram illustrating a motor with a rear cover hidden according to some example embodiments;

fig. 4 is a schematic diagram of a brush assembly of a motor brush holder structure, according to some example embodiments.

In the figure: 1. a brush holder; 2. a brush assembly; 21. a brush head; 22. a connecting wire; 23. an elastic member; 3. a chute; 4. and (5) a guide post.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus or methods consistent with aspects of the present application.

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the utility model described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the utility model described in the claims.

Referring to fig. 1-4, the present embodiment provides a brush holder structure of an electric motor, comprising: a brush holder 1 and a brush assembly 2. The brush holders 1 are provided with four brush holders 1 and are fixedly arranged on the motor rear cover, and after the motor rear cover is covered, the four brush holders 1 are in an annular array around the axis of the motor rotor.

The brush assembly 2 comprises brush heads 21, connecting wires 22 and elastic pieces 23, wherein the connecting wires 22 are copper wires, first ends of the connecting wires 22 are fixedly welded on the side walls of the brush heads 21, and second ends of the connecting wires 22 are used for being electrically connected with the brush holders 1. The first end of the elastic member 23 is connected to the rear end of the brush head 21. The elastic member 23 may be a spring.

The number of brush assemblies 2 is also four, and each brush assembly 2 is mounted on each brush holder 1, respectively. Specifically, the head end of the brush head 21 is inserted into the chute 3. Wherein the side wall of the chute 3 should be provided with a through slot for the connection line 22 to pass through. Wherein the length direction of the chute 3 points to the axis of the rotor. After the motor rear cover is covered, the second end of the elastic piece 23 abuts against the side wall of the motor, and the head end of the brush head 21 abuts against the rotor so as to be in electrical contact with the rotor, namely, when the rotor rotates, the brush head 21 can supply power for the coil of the rotor. When the head end of the brush head 21 wears, the head end of the brush head 21 is kept against the rotor under the action of the spring so as to be in electrical contact with the rotor.

The part of the rotor, which is in electrical contact with the brush head 21, is provided with two annular array power connection sheets, and two ends of the coil are respectively connected with one power connection sheet.

In the four brush holders 1, two by two are divided into two groups. The two brush holders 1 of each group are connected into a whole, and at this time, the two brush holders 1 can be directly electrified through own copper sheets. Wherein, in terms of clockwise, the first brush holder 1 and the second brush holder 1 are in a group, and the third brush holder 1 and the fourth brush holder 1 are in a group. If the brush heads 21 on the first brush holder 1 and the second brush holder 1 are abutted against the first power connection piece, the third brush holder 1 and the fourth brush holder 1 are abutted against the second power connection piece at the moment. On the contrary, if the brush heads 21 on the first brush holder 1 and the second brush holder 1 are abutted against the second electric connection piece, the third brush holder 1 and the fourth brush holder 1 are abutted against the first electric connection piece at this time.

Two guide posts 4 are arranged through the motor rear cover, so that one end of the first guide post 4 extending into the motor rear cover is connected with any one of the brush holders 1 in the first group in an electrified manner, and one end of the second guide post 4 extending into the motor rear cover is connected with any one of the brush holders 1 in the second group in an electrified manner. The two guide posts 4 are respectively connected with the positive pole and the negative pole of the power supply, and the current from the positive pole enters the first brush holder 1 and the second brush holder 1 through the first guide post 4, and the current on the first brush holder 1 and the second brush holder 1 enters the first power connection piece on the rotor through the brush head 21 and enters the coil. After the current flows through the coil, it enters the brush head 21 on the third brush holder 1 and the fourth brush holder 1 from the second terminal. And then returns to the negative electrode through the guide post 4 to form a passage, so that the coil of the rotor is electrified, and the rotor rotates under the action of the stator.

Because the first brush holder 1 and the second brush holder 1 are integrally connected, the conduction between the first brush holder 1 and the second brush holder 1 is conducted through the copper sheet, and the third brush holder 1 and the fourth brush holder 1 are integrally connected, and the conduction between the first brush holder 1 and the fourth brush holder 1 is conducted through the copper sheet. Compared with the conducting mode of the conducting wire, the structure is simplified, the conducting amount of current is greatly increased, the power of the motor is increased, and the working efficiency of the motor is improved.

As an alternative embodiment, after four brush holders 1 are arranged in a clockwise direction, the angle between the sliding groove 3 on the first brush holder 1 and the sliding groove 3 on the second brush holder 1 is 120 °, the angle between the sliding groove 3 on the second brush holder 1 and the sliding groove 3 on the third brush holder 1 is 60 °, and the angle between the sliding groove 3 on the third brush holder 1 and the sliding groove 3 on the fourth brush holder 1 is 60 °.

The specific implementation manner provides a motor, which comprises the motor brush frame structure in the embodiment. The development process of the beneficial effects is generally similar to that brought by the brush frame structure of the motor, and therefore, the description thereof is omitted.

In some embodiments, the motor further comprises: the stator is a six-pole stator, namely the stator is six magnets in a circumferential array.

The rotor is a wave winding type rotor, and the wave winding is a winding with the synthetic pitch equal to an integer. Is a common winding mode.

It should be noted that, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are used herein for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description herein, it should also be noted that the terms "mounted," "connected," "coupled," and "connected," are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example, unless otherwise specifically indicated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

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.

It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to. The multiple schemes provided by the application comprise own basic schemes, are independent of each other and are not mutually restricted, but can be combined with each other under the condition of no conflict, so that multiple effects are achieved together.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. A brush holder structure for an electric motor, comprising:

the four brush holders (1) are sequentially arranged on the periphery of the rotor in an annular array manner, and every two of the four brush holders (1) are connected into a whole;

the electric brush assembly (2) comprises brush heads (21), wherein each brush frame (1) is provided with a chute (3) pointing to the axis of the rotor, each brush head (21) is respectively inserted into each chute (3) and can be electrically contacted with the rotor, and each brush head (21) is electrically connected with the brush frame (1) where the brush head is located.

2. A brush holder structure for an electric motor according to claim 1, characterized in that a first one of said brush holders (1) and a second one of said brush holders (1) are integrally connected, and a third one of said brush holders (1) and a fourth one of said brush holders (1) are integrally connected.

3. A brush holder structure for an electric motor according to claim 1, characterized in that the angle between the slide groove (3) on the first one of the brush holders (1) and the slide groove (3) on the second one of the brush holders (1) is 120 °, the angle between the slide groove (3) on the second one of the brush holders (1) and the slide groove (3) on the third one of the brush holders (1) is 60 °, and the angle between the slide groove (3) on the third one of the brush holders (1) and the slide groove (3) on the fourth one of the brush holders (1) is 60 °.

4. The electric motor brush holder structure according to claim 1, characterized in that the brush assembly (2) further comprises:

the brush head (21) is connected with the brush frame (1) through the connecting wire (22);

the elastic piece (23) is connected to the tail end of the brush head (21), the head end of the brush head (21) is in electrical contact with the rotor, one end, far away from the brush head (21), of the elastic piece (23) is abutted to the inner wall of the motor through the elastic piece (23).

5. A brush holder structure according to claim 4, characterized in that the elastic member (23) is a spring.

6. An electric motor comprising a motor brush frame structure according to any one of claims 1-4.

7. The electric machine of claim 6, further comprising:

and the number of poles of the stator is six.

8. The electric machine of claim 6, further comprising:

and the rotor is a wave winding type rotor.