Carbon brush holder of brush motor

Abstract

The utility model discloses a brush motor carbon brush holder, which comprises a shell, a spring and a carbon brush, an installation cavity is arranged in the shell, one port of the shell is provided with a blocking assembly, the other port of the shell is an opening, the spring is fixedly installed on the carbon brush and movably arranged in the installation cavity, the blocking assembly is used for blocking the spring, and the blocking assembly is used for blocking the carbon brush. The shell and the carbon brush are relatively fixed through a limiting assembly, and a positioning assembly is arranged on the side wall of the shell and used for being connected with a motor in a positioning mode. Through the above mode, the limiting assembly enables the spring and the carbon brush to be relatively fixed in the installation cavity of the housing, thereby facilitating the installation of the carbon brush holder and the motor.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a carbon brush holder for a brushless motor. Background Art

[0002] Carbon brushes, also called brushes, are widely used as sliding contacts in many electrical devices. Carbon brushes are mainly made of graphite, impregnated graphite, and metal (copper, silver) graphite. Carbon brushes are devices that transfer energy or signals between the fixed and rotating parts of motors, generators, or other rotating machinery. They are generally made of pure carbon and a coagulant. They are generally square in shape and stuck on the brush holder. There is a spring inside to press it tightly on the shaft. When the motor rotates, the electric energy is transmitted to the coil through the commutator. Because its main component is carbon, it is called a carbon brush, and it is easy to wear. It should be regularly maintained and replaced, and carbon deposits should be cleaned.

[0003] The function of the carbon brush holder is to apply pressure to the carbon brush in sliding contact with the commutator or collector ring surface through the spring, so that it can stably conduct current between the fixed body and the rotating body. At present, the carbon brush holder on the market cannot fix the carbon brush, and its initial and working states can be freely extended and retracted in a single direction under the action of the spring. The disadvantage of this structure is that the carbon brush and spring are easy to detach from the brush holder, which makes material turnover and assembly very inconvenient. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a carbon brush holder for a brushless motor, which can facilitate the installation of the carbon brush holder and the motor.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a carbon brush holder for a brushed motor, including a shell, a spring and a carbon brush, an installation cavity is arranged inside the shell, a blocking assembly is arranged at one port of the shell, and the other port is an opening, the spring is fixedly mounted on the carbon brush and movably arranged in the installation cavity, the blocking assembly is used to resist the spring, the shell and the carbon brush are relatively fixed by a limiting assembly, and the side wall of the shell is provided with a positioning assembly for positioning connection with the motor.

[0006] At least one set of the limiting components is arranged between the housing and the carbon brush.

[0007] The shell is rectangular.

[0008] The limiting assembly and the positioning assembly are located on different side walls of the shell.

[0009] The limiting assembly includes a notch arranged on the shell, an edge of the notch extends outward to form a limiting plate, a limiting groove is arranged on the carbon brush corresponding to the limiting plate, and the limiting plate and the limiting groove are used in conjunction to fix the carbon brush in the installation cavity.

[0010] The limiting plate comprises a connecting plate, a limiting portion and an end plate which are sequentially connected to the edge of the notch, the limiting portion is a protrusion facing the carbon brush, and the end plate is an inclined surface away from the carbon brush.

[0011] The limiting components are provided in two groups and are respectively arranged on opposite side walls of the shell.

[0012] The connection between the connecting plate and the edge of the notch is elastic.

[0013] The positioning assembly is located near the opening and comprises a through hole arranged on the housing. The through hole extends outward away from the edge of the opening to form an inclined positioning plate.

[0014] The blocking assembly includes at least one blocking plate connected to the shell port.

[0015] The beneficial effects of the utility model are as follows: the utility model is a brush motor carbon brush holder, whose limit assembly makes the spring and the carbon brush relatively fixed in the installation cavity of the shell, which is convenient for the installation of the carbon brush holder and the motor. The initial state is a fixed state, and the spring and the carbon brush are fixed in the brush holder through the upper limit plate on the brush holder. After the motor is assembled, there is a release action of the limit plate, so that it can stretch and retract in a single direction under the action of the spring. The upper limit plate and processing technology of the brush holder are an integrated stamping processing and forming process, and the limit plate designed on the brush holder has a certain amplitude elastic function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a carbon brush holder for a brushless motor of the utility model;

[0017] Figure 2 This is a diagram showing the use status of a carbon brush holder for a brushless motor of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a carbon brush of a carbon brush holder of a brushless motor of the utility model;

[0019] Figure 4 It is a side view of a carbon brush holder of a brushless motor of the utility model;

[0020] Figure 5 yes Figure 4 sectional view of . DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0022] See also Figure 1, the utility model embodiment includes:

[0023] The utility model discloses a brushless motor carbon brush holder, comprising a housing 1, a spring 2 and a carbon brush 3. The housing 1 is provided with an installation cavity, a blocking component 4 is provided at one end of the housing, and the other end is open. The spring 2 is fixedly installed on the carbon brush 3 and movably arranged in the installation cavity. The blocking component 4 is used to resist the spring 2. The housing 1 and the carbon brush 3 are relatively fixed by a limiting component 5. The side wall of the housing 1 is provided with a positioning component 6 for positioning with the motor. The limiting component relatively fixes the spring and the carbon brush in the installation cavity of the housing, which facilitates the installation of the carbon brush holder and the motor.

[0024] The front end of the carbon brush 3 of the present application is provided with a boss 7 for fixing and installing the spring 2 and the lead wire 8.

[0025] At least one set of the limiting components 5 is arranged between the housing 1 and the carbon brush 3 .

[0026] The housing 1 is rectangular. In specific implementation, the housing can be set to other switches according to requirements, such as a cylindrical shape. In specific embodiments, any shape on which the limit assembly 5 can be set is within the protection scope of this application.

[0027] The limiting assembly 5 and the positioning assembly 6 are located on different side walls of the housing 1, so as to ensure that the carbon brush holder does not interfere with the motor assembly.

[0028] The limiting assembly 5 includes a notch 51 arranged on the shell 1, an edge of the notch 51 extends outward to form a limiting plate 52, and a limiting groove 53 is arranged on the carbon brush 3 corresponding to the limiting plate 52. The limiting plate 52 and the limiting groove 53 are used together to fix the carbon brush 3 in the installation cavity.

[0029] The limiting plate 52 includes a connecting plate 521 , a limiting portion 522 and an end plate 523 which are sequentially connected to the edge of the notch 51 . The limiting portion 522 is a protrusion facing the carbon brush 3 , and the end plate 523 is an inclined surface away from the carbon brush 3 .

[0030] There are two groups of limiter components 5 , which are respectively arranged on opposite side walls of the housing 1 .

[0031] The connection between the connecting plate 521 and the edge of the notch 51 is elastic.

[0032] The positioning assembly 6 is located near the opening and includes a through hole 61 provided on the housing 1 . The through hole 61 extends outward away from the edge of the opening to form an inclined positioning plate 62 .

[0033] The blocking assembly 4 includes at least one blocking plate connected to the port of the housing 1 .

[0034] The working principle of the utility model is as follows:

[0035] When in use, first fix the spring on the boss of the carbon brush, then put the spring and carbon brush assembly into the installation cavity of the shell, press the limit plate on the shell downward, so that the limit part is stuck in the limit groove of the carbon brush, fix the carbon brush, and make the initial state of the carbon brush holder a fixed state. The spring and carbon brush are fixed in the brush holder through the upper limit plate on the brush holder. After the motor is assembled, there is a release action of the limit plate, so that it can stretch and retract in a single direction under the action of the spring. The elastic limit plate and processing technology on the brush holder are an integrated stamping and molding process. The limit plate designed on the brush holder has a certain amplitude elastic function. Then assemble the positioning plate on the shell with the motor. After the assembly is completed, lift the limit plate to allow the spring and carbon brush to move in the installation cavity.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A carbon brush holder for a brushless motor, characterized in that: The invention comprises a housing (1), a spring (2) and a carbon brush (3); a mounting cavity is arranged inside the housing (1); a blocking component (4) is arranged at one end of the housing, and the other end is an opening; the spring (2) is fixedly mounted on the carbon brush (3) and movably arranged in the mounting cavity; the blocking component (4) is used to resist the spring (2); the housing (1) and the carbon brush (3) are relatively fixed by a limiting component (5); and a positioning component (6) is arranged on the side wall of the housing (1) for positioning with the motor.

2. The carbon brush holder for a brushless motor according to claim 1, characterized in that: At least one set of the limiting components (5) is arranged between the housing (1) and the carbon brush (3).

3. The carbon brush holder of a brushless motor according to claim 2, characterized in that: The housing (1) is rectangular.

4. The carbon brush holder of the brushed motor according to claim 3, characterized in that: The limiting assembly (5) and the positioning assembly (6) are located on different side walls of the housing (1).

5. The carbon brush holder for a brushless motor according to claim 4, characterized in that: The limiting assembly (5) comprises a notch (51) provided on the housing (1); an edge of the notch (51) extends outward to form a limiting plate (52); a limiting groove (53) is provided on the carbon brush (3) corresponding to the limiting plate (52); the limiting plate (52) and the limiting groove (53) are used in conjunction with each other to fix the carbon brush (3) in the installation cavity.

6. The carbon brush holder for a brushless motor according to claim 5, characterized in that: The limiting plate (52) comprises a connecting plate (521), a limiting portion (522) and an end plate (523) which are sequentially connected to the edge of the notch (51); the limiting portion (522) is a protrusion facing the carbon brush (3); and the end plate (523) is an inclined surface away from the carbon brush (3).

7. The carbon brush holder for a brushless motor according to any one of claims 1 to 5, characterized in that: The limiting components (5) are provided in two groups and are respectively arranged on opposite side walls of the housing (1).

8. The carbon brush holder for a brushless motor according to claim 6, characterized in that: The connection between the connecting plate (521) and the edge of the notch (51) is elastic.

9. The carbon brush holder for a brushless motor according to claim 1, characterized in that: The positioning assembly (6) is located near the opening and comprises a through hole (61) provided on the housing (1), wherein the through hole (61) extends outward away from the edge of the opening to form an inclined positioning plate (62).

10. The carbon brush holder of a brushless motor according to claim 1, characterized in that: The blocking assembly (4) comprises at least one blocking plate (41) connected to a port of the housing (1).

Images