Motor carbon brush structure

Abstract

The utility model relates to the technical field of carbon brushes, and discloses a motor carbon brush structure, which comprises a U-shaped carbon brush holder and a carbon brush wheel rotatably mounted in the middle of the U-shaped carbon brush holder. The end part of the U-shaped carbon brush holder is provided with a dust discharge box through an elastic piece; a tubular guide piece is inserted into the dust discharge box, one end, far away from the dust discharge box, of the tubular guide piece penetrates through the end part of the U-shaped carbon brush holder and is inserted into the U-shaped carbon brush holder, a fanning assembly connected with the carbon brush wheel is mounted on the side surface of the U-shaped carbon brush holder, and the fanning assembly is communicated with the tubular guide piece. According to the motor carbon brush structure provided by the utility model, dust generated during friction between the carbon brush wheel and the rotor can be conveniently cleaned through the cooperation of the tubular guide piece and the fanning assembly.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush technology, and in particular to a carbon brush structure for motors. Background Technology

[0002] Motor carbon brushes are a key component in motors, mainly used in brushed motors. Their main function is to transfer current from the stationary part (stator) to the rotating part (rotor) of the motor. Carbon brushes are generally made of carbon powder and binder, and have good electrical conductivity, thermal conductivity and lubrication properties. They also have a certain mechanical strength and the ability to generate commutation sparks. With the development of science and technology, the types of motors and the operating conditions they are used in are becoming more and more diverse. Therefore, various grades of brushes are needed to meet these requirements. As a result, the types of brushes are also increasing with the development of the motor industry.

[0003] During the operation of an electric motor, the contact and relative movement between the rotor and the carbon brushes cause friction. Over time, this friction not only accelerates the wear of the carbon brushes but also generates carbon dust. Due to the airflow and electric field inside the motor, this carbon dust is easily drawn into the motor and accumulates inside. When this dust accumulates to a certain extent inside the motor, it may cause poor electrical contact or even short circuits, affecting the normal operation and safety of the motor.

[0004] To address the aforementioned issues, this application proposes a motor carbon brush structure. Utility Model Content

[0005] Based on the technical problems existing in the background art, this utility model proposes a motor carbon brush structure.

[0006] The present invention proposes a motor carbon brush structure, including a U-shaped carbon brush holder and a carbon brush wheel rotatably installed in the middle of the U-shaped carbon brush holder;

[0007] The end of the U-shaped carbon brush holder is fitted with a dust collection box via an elastic element;

[0008] A tubular guide is inserted into the dust collection box, with one end of the tubular guide away from the dust collection box passing through and inserting into the end of the U-shaped carbon brush holder. A fan assembly connected to the carbon brush wheel is installed on the side of the U-shaped carbon brush holder, and the fan assembly is connected to the tubular guide.

[0009] Preferably, the tubular guide includes a guide tube, an assembly block, and an axial fan blade. The end of the U-shaped carbon brush holder is fixedly inserted with a guide tube that slides through and extends into the dust collection box. An assembly block is installed inside the guide tube, and an axial fan blade is rotatably installed on the side of the assembly block.

[0010] Preferably, the fan assembly includes a fan duct, air holes, a duct, and a fan component. The fan duct is installed on the side of the U-shaped carbon brush holder. An air hole is opened on the outer periphery of the fan duct near the U-shaped carbon brush holder. The end of the fan duct away from the U-shaped carbon brush holder is connected to the duct, and the end of the duct away from the fan duct is connected to the bottom of the guide tube. The air outlet end of the duct is directly opposite the axial fan blade. A fan component connected to the carbon brush wheel is rotatably installed inside the fan duct.

[0011] Preferably, the fan component includes a rotating rod and blades. The rotating rod is arranged laterally inside the air duct and rotates through the end of the air duct and the side of the U-shaped carbon brush holder and is connected to the axis of the carbon brush wheel. Blades located inside the air duct are installed on the rotating rod.

[0012] Preferably, the elastic element includes a connecting rod and a spring. The connecting rod is installed at one end of the U-shaped carbon brush holder near the dust collection box, and the end of the connecting rod slides through the end of the dust collection box and extends into it. A spring is sleeved on the connecting rod, and the two ends of the spring are respectively connected to the U-shaped carbon brush holder and the dust collection box.

[0013] Preferably, a dust discharge pipe is connected to the side of the dust discharge box.

[0014] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] By using a tubular guide and a fan assembly, the carbon brush wheel on the U-shaped carbon brush holder comes into contact with the rotor. When the rotor rotates, it drives the carbon brush wheel in the middle of the U-shaped carbon brush holder to rotate as well. When the carbon brush wheel rotates, it drives the fan assembly to operate. When the fan assembly operates, it blows air into the tubular guide and the air enters the dust collection box through the tubular guide. The dust generated when the carbon brush wheel rubs against the rotor can be guided into the dust collection box through the tubular guide and then discharged. This structure, through the cooperation of the tubular guide and the fan assembly, facilitates the cleaning of the dust generated when the carbon brush wheel rubs against the rotor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a motor carbon brush structure proposed in this utility model.

[0017] Figure 2 This utility model Figure 1 The top view in the image.

[0018] Figure 3 This utility model Figure 2 A schematic diagram of the structure of the central tube guide.

[0019] Figure 4 This utility model Figure 2 A schematic diagram of the structure of the central fan assembly.

[0020] Figure 5 This is a schematic diagram of the structure of a motor carbon brush proposed in this utility model.

[0021] Reference numerals: 1. U-shaped carbon brush holder; 2. Carbon brush wheel; 3. Elastic element; 31. Connecting rod; 32. Spring; 4. Dust collection box; 5. Tubular guide; 51. Guide tube; 52. Assembly block; 53. Axial flow fan blade; 6. Fan assembly; 61. Air duct; 62. Air hole; 63. Air duct; 64. Fan component; 641. Rotating rod; 642. Blade; 7. Dust collection pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] like Figure 1-5 As shown, the present invention proposes a motor carbon brush structure, including a U-shaped carbon brush holder 1 and a carbon brush wheel 2 rotatably installed in the middle of the U-shaped carbon brush holder 1;

[0024] In this embodiment, a dust collection box 4 is installed at the end of the U-shaped carbon brush holder 1 via an elastic element 3. The elastic element 3 includes a connecting rod 31 and a spring 32. The connecting rod 31 is installed at one end of the U-shaped carbon brush holder 1 near the dust collection box 4, and the end of the connecting rod 31 slides through the end of the dust collection box 4 and extends into it. A spring 32 is sleeved on the connecting rod 31, and the two ends of the spring 32 are respectively connected to the U-shaped carbon brush holder 1 and the dust collection box 4.

[0025] In this embodiment, a tubular guide 5 is inserted into the dust collection box 4, and the end of the tubular guide 5 away from the dust collection box 4 passes through the end of the U-shaped carbon brush holder 1 and is inserted therein. The tubular guide 5 includes a guide tube 51, an assembly block 52 and an axial flow fan blade 53. The end of the U-shaped carbon brush holder 1 is fixedly inserted with a guide tube 51 that slides through the dust collection box 4 and extends therein. An assembly block 52 is installed inside the guide tube 51, and an axial flow fan blade 53 is rotatably installed on the side of the assembly block 52.

[0026] In this embodiment, a fan assembly 6 connected to the brush wheel 2 is installed on the side of the U-shaped carbon brush holder 1, and the fan assembly 6 is connected to the tubular guide 5. The fan assembly 6 includes a blower 61, a vent 62, a duct 63, and a fan element 64. The blower 61 is installed on the side of the U-shaped carbon brush holder 1. A vent 62 is opened on the outer periphery of the blower 61 near the end of the U-shaped carbon brush holder 1. The end of the blower 61 away from the U-shaped carbon brush holder 1 is connected to the duct 63, and the duct 63 is far from the blower 61. One end is connected to the bottom of the guide tube 51. The air outlet end of the air duct 63 is directly opposite to the axial fan blade 53. A fan component 64 connected to the carbon brush wheel 2 is rotatably installed inside the air duct 61. The fan component 64 includes a rotating rod 641 and blades 642. The rotating rod 641 is horizontally arranged inside the air duct 61. The rotating rod 641 rotates through the end of the air duct 61 and the side of the U-shaped carbon brush holder 1 and is connected to the axis of the carbon brush wheel 2. Blades 642 located inside the air duct 61 are installed on the rotating rod 641.

[0027] In a specific embodiment, a dust discharge pipe 7 is connected to the side of the dust discharge box 4.

[0028] It should be noted that the carbon brush wheel 2 on the U-shaped carbon brush holder 1 can be brought into contact with the rotor. When the rotor rotates, it drives the carbon brush wheel 2 in the middle of the U-shaped carbon brush holder 1 to rotate as well. When the carbon brush wheel 2 rotates, it can drive the rotating rod 641 connected to it to rotate as well. The rotating rod 641 drives the blades 642 to rotate. When the blades 642 rotate, they can draw in external air through the air holes 62 on the air duct 61, and then guide it through the air duct 63 to the guide pipe 51 and blow it towards the axial flow fan blades 53, which can make the axial flow fan blades 53 rotate. When the axial flow fan blades 53 rotate, they can generate a guiding airflow in the guide pipe 51. The airflow blows into the dust collection box 4. The dust generated when the carbon brush wheel 2 rubs against the rotor can be guided to the dust collection box 4 through the guide pipe 51, and then discharged through the dust collection pipe 7 on the side of the dust collection box 4. This structure, through the cooperation of the tubular guide 5 and the fan assembly 6, facilitates the cleaning of the dust generated when the carbon brush wheel 2 rubs against the rotor.

[0029] Under the action of spring 32, the carbon brush wheel 2 on the U-shaped carbon brush holder 1 can be made to contact the rotor, ensuring the clamping force between the carbon brush wheel 2 and the rotor.

[0030] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A motor carbon brush structure, comprising a U-shaped carbon brush holder (1) and a carbon brush wheel (2) rotatably installed in the middle of the U-shaped carbon brush holder (1), characterized in that: an end of the U-shaped carbon brush holder (1) is provided with a dust removal box (4) through an elastic element (3); a tubular guide (5) is inserted into the dust removal box (4), and one end of the tubular guide (5) away from the dust removal box (4) penetrates through and extends into an end of the U-shaped carbon brush holder (1); a fan assembly (6) connected with the carbon brush wheel (2) is installed on the side of the U-shaped carbon brush holder (1), and the fan assembly (6) communicates with the tubular guide (5). The tubular guide (5) comprises a guide tube (51), an assembly block (52) and an axial fan blade (53), the end of the U-shaped carbon brush holder (1) is fixedly inserted with the guide tube (51) sliding through and extending into the dust removal box (4), the assembly block (52) is installed in the guide tube (51), and the axial fan blade (53) is rotatably installed on the side of the assembly block (52). The fan assembly (6) comprises a wind cylinder (61), a wind hole (62), a wind pipe (63) and a fan piece (64), the wind cylinder (61) is installed on the side of the U-shaped carbon brush holder (1), the wind hole (62) is formed in the outer periphery of one end of the wind cylinder (61) close to the U-shaped carbon brush holder (1), the wind pipe (63) is communicated with one end of the wind cylinder (61) away from the U-shaped carbon brush holder (1), and the other end of the wind pipe (63) away from the wind cylinder (61) is communicated with the bottom of the guide tube (51), the outlet end of the wind pipe (63) faces the axial fan blade (53), and the fan piece (64) connected with the carbon brush wheel (2) is rotatably installed in the wind cylinder (61).

2. The carbon brush structure of claim 1, wherein The fan piece (64) comprises a rotating rod (641) and a blade (642), the rotating rod (641) is transversely arranged in the wind cylinder (61), and the rotating rod (641) rotatably penetrates through the end of the wind cylinder (61) and the side of the U-shaped carbon brush holder (1) and is connected with the shaft of the carbon brush wheel (2), and the blade (642) is installed on the rotating rod (641) in the wind cylinder (61).

3. A carbon brush structure for an electric machine according to claim 2, characterized in that The elastic element (3) comprises a connecting rod (31) and a spring (32), one end of the U-shaped carbon brush holder (1) close to the dust removal box (4) is provided with the connecting rod (31), and the end of the connecting rod (31) slidingly penetrates through and extends into the end of the dust removal box (4), the spring (32) is sleeved on the connecting rod (31), and the two ends of the spring (32) are respectively connected with the U-shaped carbon brush holder (1) and the dust removal box (4).

4. A carbon brush structure for an electric machine according to claim 3, characterized in that The side of the dust removal box (4) is communicated with a dust removal pipe (7).

5. The carbon brush structure of claim 1, wherein ​ 6. The carbon brush structure of claim 1, wherein ​

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