Low carbon brush spark motor brush

Abstract

The utility model discloses low carbon brush spark motor carbon brush relates to motor carbon brush technical field, including base and arc surface, base: inside bottom and spring's bottom end are connected, spring's top end is connected with the bottom of brush body, the bottom of brush body middle part is connected with the top end of stator wire, the bottom of base is fixed with the copper sheet of connection, the bottom of stator wire passes through the through -hole of base middle part and is connected with the top of copper sheet of connection, arc surface is set up in the top of brush body, the lateral surface of base is equipped with adjusting unit, wherein, still including the ash groove, this low carbon brush spark motor carbon brush adopts the scraping strip cooperation ash groove to can scrape the dust on the surface of slip ring and collect, like this prevents dust accumulation and causes carbon brush wear and tear, and rotating adjusting screw can height adjustment of limiting plate, like this can adjust the linear diameter of spring and carry out the adjustment to elastic force, to prevent the elastic force too big and lead to the friction and appear spark.

Description

Technical Field

[0001] This utility model relates to the field of motor carbon brush technology, specifically to low-carbon brush EDM motor carbon brushes. Background Technology

[0002] Carbon brushes, also known as electric brushes, are widely used in many electrical devices as sliding contact components. The main materials used in carbon brush applications include graphite, resin-impregnated graphite, and metallic (including copper and silver) graphite. Carbon brushes are devices that transmit energy or signals between the stationary and rotating parts of electric motors, generators, or other rotating machinery. They are generally made of pure carbon with a coagulant, and are typically square in shape, held in place by a metal bracket. A spring inside presses them firmly against the rotating shaft. When the motor rotates, it transmits electrical energy to the coils through the commutator. Because their main component is carbon, they are called carbon brushes. They are prone to wear and require regular maintenance, replacement, and cleaning of carbon deposits. However, currently used carbon brushes are prone to generating sparks during use, and the spring force is difficult to adjust, which easily leads to wear. Therefore, we propose low-sparking carbon brushes for motors. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a low carbon brush for spark motors. The scraper bar and dust collection groove can scrape and collect the dust on the surface of the slip ring, thus preventing dust accumulation and carbon brush wear. Rotating the adjusting screw can adjust the height of the limiting plate, which can adjust the wire diameter of the spring to adjust the elastic force, so as to prevent excessive elastic force from causing friction and sparks. This can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a low-carbon brush for an EDM motor, comprising a base and an arc-shaped surface;

[0005] Base: The bottom surface inside is connected to the bottom end of the spring, the top end of the spring is connected to the bottom surface of the brush body, the middle part of the bottom surface of the brush body is connected to the top end of the stator wire, a connecting copper sheet is fixed on the bottom surface of the base, the bottom end of the stator wire passes through the through hole in the middle of the base and connects to the top surface of the connecting copper sheet, the arc-shaped surface is opened on the top surface of the brush body, and an adjustment unit is provided on the side of the base.

[0006] It also includes two ash collection troughs, which are respectively opened on the left and right sides of the brush body.

[0007] The spring extension allows the brush body to automatically engage with the motor slip ring. The arc-shaped surface increases the contact area between the slip ring and the brush body, while the dust collection groove collects dust that falls onto the slip ring surface.

[0008] Furthermore, the adjustment unit includes an adjustment screw, a connecting plate, a support frame, a limiting plate, and a through groove. There are two connecting plates, which are respectively fixed on both sides of the top surface of the base. The screw hole in the middle of the connecting plate is threadedly connected to the adjustment screw. The adjustment screw is rotatably connected to the middle of the top surface of the support frame. The support frame is slidably connected to the inner wall of the base. A limiting plate is inserted into the inside of the support frame. The through groove is opened on the surface of the base. The limiting plate is slidably connected to the through groove. The limiting plate inside the support frame is inserted into the inside of the spring. Rotating the adjustment screw causes the limiting plate to press down, thereby adjusting the wire diameter of the spring to adjust the elasticity and prevent excessive spring force from causing excessive compression between the carbon brush and the slip ring, resulting in sparks.

[0009] Furthermore, it also includes a T-slot, a T-block, and a scraper. The T-slot is formed on the side of the brush body, and a T-block is fixed to the inner side of the scraper. The T-block is inserted into the T-slot, and the top surface of the scraper fits against the arc surface. The T-block is inserted into the T-slot to install the scraper. Together with the dust collection groove, it can scrape and collect the dust on the surface of the slip ring, thus preventing dust accumulation from causing carbon brush wear.

[0010] Furthermore, it also includes a protective coating, which is uniformly coated on the surface of the brush body. The protective coating is made of epoxy resin. The protective coating can effectively improve the strength, corrosion resistance and high temperature resistance of the carbon brush, thereby increasing the service life of the carbon brush.

[0011] Furthermore, it also includes a smoothing film, which is uniformly coated on the surface of the arc-shaped surface. The smoothing film is an oxide film, which can change the contact characteristics between the carbon brush and the slip ring to reduce friction and wear.

[0012] Furthermore, the brush body is made of a mixture of graphite, silicon carbide, and carbon powder, which ensures that the carbon brush is not a metal conductor, thereby eliminating the generation of sparks.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This low-carbon brush spark motor carbon brush has the following advantages:

[0014] 1. Insert the limiting plate inside the support frame into the spring, and rotate the adjusting screw to press the limiting plate down, thereby adjusting the spring wire diameter to adjust the elastic force, so as to prevent excessive spring force from causing excessive compression between the carbon brush and the slip ring, resulting in sparks.

[0015] 2. The scraper is installed by inserting the T-block into the T-slot. Together with the dust collection groove, the dust on the surface of the slip ring can be scraped and collected, thus preventing dust accumulation and carbon brush wear.

[0016] 3. The protective coating can effectively improve the strength, corrosion resistance and high temperature resistance of the carbon brush, thereby increasing its service life. The smooth film can change the contact characteristics between the carbon brush and the slip ring, thereby reducing friction and wear. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the adjustment unit structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the brush body structure of this utility model.

[0020] In the diagram: 1. Base, 2. Adjustment unit, 21. Adjustment screw, 22. Connecting plate, 23. Support frame, 24. Limiting plate, 25. Through groove, 3. Spring, 4. Brush body, 5. Connecting copper sheet, 6. Stator wire, 7. Arc surface, 8. Dust accumulation groove, 9. T-shaped groove, 10. T-shaped block, 11. Scraper, 12. Protective coating, 13. Smoothing film. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This embodiment provides a technical solution: a low carbon brush spark motor carbon brush, including a base 1 and an arc-shaped surface 7;

[0023] Base 1: The bottom surface inside is connected to the bottom end of spring 3, the top end of spring 3 is connected to the bottom surface of brush body 4, the middle part of the bottom surface of brush body 4 is connected to the top end of stator wire 6, a connecting copper plate 5 is fixed on the bottom surface of base 1, the bottom end of stator wire 6 passes through the through hole in the middle of base 1 and connects to the top surface of connecting copper plate 5, an arc-shaped surface 7 is opened on the top surface of brush body 4, an adjustment unit 2 is provided on the side of base 1, the adjustment unit 2 includes an adjustment screw 21, a connecting plate 22, a support frame 23, a limiting plate 24 and a through groove 25, there are two connecting plates 22 and they are fixed on both sides of the top surface of base 1 respectively. The screw hole in the middle of 22 is threadedly connected to the adjusting screw 21. The adjusting screw 21 is rotatably connected to the middle of the top surface of the support frame 23. The support frame 23 is slidably connected to the inner wall of the base 1. A limiting plate 24 is inserted into the inside of the support frame 23. A through groove 25 is opened on the surface of the base 1. The limiting plate 24 is slidably connected to the through groove 25. The limiting plate 24 inside the support frame 23 is inserted into the inside of the spring 3. Rotating the adjusting screw 21 causes the limiting plate 24 to press down, thereby adjusting the wire diameter of the spring 3 to adjust the elasticity, so as to prevent the excessive elasticity of the spring 3 from causing excessive compression between the carbon brush and the slip ring, resulting in sparks.

[0024] The system includes two dust collection troughs 8, located on the left and right sides of the brush body 4. A spring 3 extends to automatically engage the brush body 4 with the motor slip ring. An arc-shaped surface 7 increases the contact area between the slip ring and the brush body 4. The dust collection troughs 8 collect dust falling from the slip ring surface. The system also includes a T-slot 9, a T-block 10, and a scraper 11. The T-slot 9 is located on the side of the brush body 4. A T-block 10 is fixed to the inner side of the scraper 11, and the T-block 10 is inserted into the T-slot 9. The top surface of the scraper 11 fits against the arc-shaped surface 7. The T-block 10 is inserted into the T-slot 9 to install the scraper 11. Together with the dust collection troughs 8, the system collects dust from the slip ring surface. The brush body 4 is scraped and collected to prevent dust accumulation and carbon brush wear. It also includes a protective coating 12, which is uniformly applied to the surface of the brush body 4. The protective coating 12 is made of epoxy resin. This protective coating effectively improves the strength, corrosion resistance, and high-temperature resistance of the carbon brush, thereby extending its service life. Additionally, it includes a smoothing film 13, which is uniformly applied to the surface of the curved surface 7. The smoothing film 13 is an oxide film. This smoothing film alters the contact characteristics between the carbon brush and the slip ring, reducing friction and wear. The brush body 4 is made of a mixture of graphite, silicon carbide, and carbon powder, ensuring that the carbon brush is not a metallic conductor, thus eliminating spark generation.

[0025] The working principle of the low-carbon brush spark motor carbon brush provided by this utility model is as follows: First, the adjusting screw 21 is rotated to press down the limiting plate 24, thereby adjusting the wire diameter of the spring 3 to adjust the elasticity, so as to prevent the excessive elasticity of the spring 3 from causing excessive compression between the carbon brush and the slip ring, resulting in sparks. At the same time, the brush body 4 is made of graphite, silicon carbide and carbon powder, which ensures that the carbon brush is not a metal conductor, thereby eliminating the generation of sparks. The T-shaped block 10 is inserted into the T-shaped groove 9 to install the scraper 11. Together with the dust collection groove 8, it can scrape and collect the dust on the surface of the slip ring, thus preventing dust accumulation and carbon brush wear. The smooth film 13 on the top surface of the arc surface 7 can change the contact characteristics between the carbon brush and the slip ring to reduce friction and wear. The protective coating 12 is epoxy resin. The protective coating 12 can effectively improve the strength, corrosion resistance and high temperature resistance of the carbon brush, thereby improving the service life of the carbon brush.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-carbon brush for an EDM motor, characterized in that: Includes a base (1) and an arc-shaped surface (7); Base (1): The bottom surface inside is connected to the bottom end of the spring (3), the top end of the spring (3) is connected to the bottom surface of the brush body (4), the middle part of the bottom surface of the brush body (4) is connected to the top end of the stator line (6), the bottom surface of the base (1) is fixed with a connecting copper sheet (5), the bottom end of the stator line (6) passes through the through hole in the middle of the base (1) and is connected to the top surface of the connecting copper sheet (5), the arc surface (7) is opened on the top surface of the brush body (4), and the side of the base (1) is provided with an adjustment unit (2). It also includes two ash collection troughs (8), which are respectively opened on the left and right sides of the brush body (4).

2. The low-carbon brush for EDM motors according to claim 1, characterized in that: The adjustment unit (2) includes an adjustment screw (21), a connecting plate (22), a support frame (23), a limiting plate (24), and a through groove (25). There are two connecting plates (22), which are fixed on both sides of the top surface of the base (1). The screw hole in the middle of the connecting plate (22) is threadedly connected to the adjustment screw (21). The adjustment screw (21) is rotatably connected to the middle of the top surface of the support frame (23). The support frame (23) is slidably connected to the inner wall of the base (1). The limiting plate (24) is inserted into the inside of the support frame (23). The through groove (25) is opened on the surface of the base (1). The limiting plate (24) is slidably connected to the through groove (25).

3. The low-carbon brush for EDM motors according to claim 1, characterized in that: It also includes a T-slot (9), a T-block (10) and a scraper (11). The T-slot (9) is opened on the side of the brush body (4). The inner side of the scraper (11) is fixed with a T-block (10). The T-block (10) is inserted into the T-slot (9) in a corresponding manner. The top surface of the scraper (11) is in contact with the arc surface (7).

4. The low-carbon brush for EDM motors according to claim 1, characterized in that: It also includes a protective coating (12), which is uniformly coated on the surface of the brush body (4), and the protective coating (12) is epoxy resin.

5. The low-carbon brush for EDM motors according to claim 1, characterized in that: It also includes a smooth film (13), which is uniformly coated on the surface of the arc-shaped surface (7), and the smooth film (13) is an oxide film.

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