Motor brush holder structure capable of preventing carbon powder from accumulating

Abstract

The utility model belongs to the technical field of motors, and particularly discloses a motor brush holder structure capable of preventing carbon powder accumulation, which comprises a main holder body and arc-shaped grooves, four groups of arc-shaped grooves are arranged at the outer edge of the main holder body, a circular groove is arranged at the center of the inside of the main holder body, an oxidation coating is coated on the inner wall of the circular groove, and the oxidation coating is coated on the inner wall of the circular groove. The front end and the rear end of the surface of the main frame body are coated with oxidation films correspondingly, and positioning sleeves are arranged on the periphery of the front end of the main frame body correspondingly. According to the motor brush holder structure capable of preventing carbon powder accumulation, the oxidation coating is coated on the circumference of the inner wall of the circular groove, and the oxidation coatings are coated on two positions of the surface of the basic main holder body, so that in the long-time use process of a motor, a carbon brush is inevitably rubbed and collided with a positioning sleeve to generate powder, and an oxidation film is also fixed on the circular groove in the center, so that the carbon powder accumulation is prevented. The carbon powder can be prevented from being attached to the surface of the main frame body to form blocks and falling into the lower portion of the shell along with movement of the motor inner core, and the problem that the carbon powder is prone to adhering to the frame body is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor brush holder structure for preventing carbon powder from accumulating. Background Art

[0002] The motor brush holder is a carrier object with multiple groups of carbon brushes installed on its surface. It is an essential component inside the motor. It can press the carbon brushes against the steering gear, slip ring and other objects through springs, while maintaining close contact between the two and stably transmitting current to ensure normal power output of the motor shaft.

[0003] Ordinary motor brush holders all have reserved sleeves for installing carbon brushes, which can not only avoid damage to the carbon brushes, but also prevent the carbon brushes from falling off the surface of the holder. However, some carbon brush powder often remains on the surface of such holders, which cannot be cleaned by themselves. This not only pollutes the internal environment of the motor, but also blocks the air vents, affecting the normal heat dissipation and cooling of the equipment.

[0004] Now, a new motor brush holder structure that prevents carbon powder from accumulating is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the present invention is to provide a motor brush holder structure that prevents carbon powder from accumulating, so as to solve the problem in the background art that carbon powder easily sticks to the holder.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor brush holder structure for preventing carbon powder accumulation, comprising a main frame and an arc groove, the outer edge of the main frame is provided with four groups of arc grooves, a circular groove is provided at the center of the interior of the main frame, and the inner wall of the circular groove is coated with an oxidation coating, the front and rear ends of the main frame surface are respectively coated with an oxide film, positioning sleeves are respectively provided around the front end of the main frame, and a ring is provided on the outer side of the positioning sleeve, a carbon brush is inserted in the ring, a connecting groove is provided behind the carbon brush, and an electric wire is fixedly connected to the connecting groove, fixed blocks are respectively installed at the four groups of oblique angles at the front end of the main frame, and welding points are respectively welded between the two sides of the fixed block and the main frame, and an electric wire is connected between the fixed block and the connecting groove.

[0007] Preferably, the oxide film symmetrically covers the front and rear ends of the main frame, and the circular groove is located at the center of the main frame.

[0008] Preferably, the front end of the positioning sleeve is provided with a slot, and a fitting strip is fixed on the inner wall of the slot, the two sides of the interior of the positioning sleeve are respectively provided with sockets, and guide rods are movably inserted in the sockets, and a clamping sleeve is fixed between the guide rods, and the two sides of the surface of the positioning sleeve are respectively provided with threaded grooves, and bolts are assembled in the threaded grooves, and positioning pieces are welded on both sides of the exterior of the positioning sleeve, and screw holes are provided on the inner side of the positioning piece, and screws are assembled in the screw holes.

[0009] Preferably, the guide rods are symmetrically fixed on both sides of the ferrule, and the guide rods can slide back and forth along the insertion hole.

[0010] Preferably, the ferrule is sleeved on the outside of the carbon brush, and the ferrule and the carbon brush are arranged in concentric circles.

[0011] Preferably, the surface of the front end of the main frame is provided with four groups of slides, and a slide is movably connected in the slide, a limit block is fixed on the outside of the slide, and a round hole is provided inside the limit block, the wire is embedded in the round hole, and balls are inlaid on both sides of the slide, and two bolts are threadedly connected at the center of the ball, and reserved holes are arranged in the inner wall of the slide.

[0012] Preferably, the rod body of the second bolt is embedded in the reserved hole, and the inner wall of the reserved hole matches the external thread of the second bolt.

[0013] Preferably, the outer portion of the ball is attached to the inner wall of the slideway, and the slide can slide back and forth along the slideway.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the motor brush holder structure for preventing carbon powder accumulation not only avoids carbon powder accumulation and fixes the carbon brushes, but also prevents the wiring harness from loosening;

[0015] (1) By applying an oxide coating around the inner wall of the circular groove, the two surfaces of the main frame are coated with an oxide coating. During the long-term use of the motor, the carbon brush will inevitably produce friction and collision with the positioning sleeve to produce powder. The circular groove at the center also fixes the oxide film, which can prevent the carbon powder from sticking to the surface of the main frame and forming a block. As the motor core moves, it falls under the shell and accumulates there. The deposited powder garbage can be cleaned by opening the motor shell;

[0016] (2) Positioning sleeves are provided around the front end of the main frame, one end of the wire is mounted on the main frame via a fixed block connected by a welding point, and the other end of the wire is connected to the carbon brush and fixed in the positioning sleeve. The guide rod embedded in the socket is pulled out and the distance between the sleeve and the positioning sleeve is adjusted, and then the screw hole in the threaded groove is used to fix it tightly, thereby preventing the carbon brush from detaching from the frame and limiting its movement to implement protection;

[0017] (3) By fixing a limit block on the outside of the slide, the slide and the limit block connected to it are moved along the slideway on the surface of the main frame. Under the lubrication of the balls on both sides, the position of the slide can be smoothly changed. Then, the position of the slide is locked by aligning it with the reserved hole and screwing in the bolt 2. The limit block sleeved on the outside of the wire is adjusted according to the length of the wire. The movement of the wire is restricted through the circular hole to maintain the normal operation of this structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the main frame of the utility model;

[0020] Figure 3 This is a schematic diagram of the front view structure of the positioning sleeve of the utility model;

[0021] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure of the local section at point A in the middle.

[0022] In the figure: 1. Main frame; 2. Arc groove; 3. Electric wire; 4. Limit block; 5. Card sleeve; 6. Connecting groove; 7. Positioning piece; 8. Screw hole; 9. Screw; 10. Solder point; 11. Fixing block; 12. Positioning sleeve; 13. Slot; 14. Fitting strip; 15. Carbon brush; 16. Round hole; 17. Oxide film; 18. Round groove; 19. Oxide coating; 20. Threaded groove; 21. Bolt 1; 22. Ring; 23. Guide rod; 24. Socket; 25. Slide; 26. Bolt 2; 27. Ball; 28. Slide; 29. ​​Reserved hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 , the utility model provides an embodiment: a motor brush holder structure for preventing carbon powder accumulation, comprising a main frame 1 and an arc-shaped groove 2, the outer edge of the main frame 1 is provided with four groups of arc-shaped grooves 2, a circular groove 18 is provided at the center of the inside of the main frame 1, and the inner wall of the circular groove 18 is coated with an oxidation coating 19, and the front and rear ends of the surface of the main frame 1 are respectively coated with an oxide film 17, and positioning sleeves 12 are provided on all sides of the front end of the main frame 1, and a collar 22 is provided on the outer side of the positioning sleeve 12, a carbon brush 15 is inserted into the collar 22, a connecting groove 6 is provided behind the carbon brush 15, and a wire 3 is fixedly connected to the connecting groove 6, and a fixing block 11 is respectively installed at the four groups of oblique angles at the front end of the main frame 1, and welding points 10 are welded between the two sides of the fixing block 11 and the main frame 1, and a wire 3 is connected between the fixing block 11 and the connecting groove 6;

[0025] The oxide film 17 is symmetrically covered on the front and rear ends of the main frame 1, and the circular groove 18 is located at the center of the main frame 1;

[0026] Specifically, if Figure 1 and Figure 2 As shown, the surface of the basic main frame 1 is coated with an oxide coating 19 at both ends. During the long-term use of the motor, the carbon brush 15 will inevitably rub and collide with the positioning sleeve 12 to produce powder. The circular groove 18 at the center also fixes the oxide film 17 to prevent the carbon powder from sticking to the surface of the main frame 1 and forming lumps. As the inner core of the motor moves, it falls under the shell and accumulates there.

[0027] The front end of the positioning sleeve 12 is provided with a slot 13, and a fitting strip 14 is fixed on the inner wall of the slot 13. Plug holes 24 are provided on both sides of the interior of the positioning sleeve 12, and guide rods 23 are movably inserted in the plug holes 24. A clamping sleeve 5 is fixed between the guide rods 23. Threaded grooves 20 are provided on both sides of the surface of the positioning sleeve 12, and bolts 21 are assembled in the threaded grooves 20. Positioning pieces 7 are welded on both sides of the exterior of the positioning sleeve 12, and screw holes 8 are provided on the inner side of the positioning piece 7, and screws 9 are assembled in the screw holes 8.

[0028] The guide rods 23 are symmetrically fixed on both sides of the ferrule 5. The guide rods 23 can slide back and forth along the socket 24. The ferrule 5 is sleeved on the outside of the carbon brush 15. The ferrule 5 and the carbon brush 15 are arranged concentrically.

[0029] Specifically, if Figure 1 and Figure 3 As shown, one end of the wire 3 is mounted on the main frame 1 via a fixed block 11 connected by a welding point 11, and the other end of the wire 3 is connected to the carbon brush 15 and fixed in the positioning sleeve 12. The guide rod 23 embedded in the socket 24 is pulled out and the distance between the ferrule 5 and the positioning sleeve 12 is adjusted. The screw hole 21 in the threaded groove 20 is then used to fix it tightly, thereby preventing the carbon brush 15 from detaching from the frame.

[0030] The surface of the front end of the main frame 1 is provided with four sets of slideways 28, and the slideways 28 are movably connected with the slides 25. The outer portion of the slide 25 is fixed with a limit block 4, and the inner portion of the limit block 4 is provided with a circular hole 16. The wire 3 is embedded in the circular hole 16. Balls 27 are respectively inlaid on both sides of the slide 25, and the center of the ball 27 is threadedly connected with a bolt 26. The inner wall of the slide 28 is arranged with reserved holes 29;

[0031] The rod of the second bolt 26 is embedded in the reserved hole 29. The inner wall of the reserved hole 29 matches the external thread of the second bolt 26. The outer part of the ball 27 fits on the inner wall of the slide 28. The slide 25 can slide back and forth along the slide 28.

[0032] Specifically, if Figure 1 and Figure 4As shown, the slide 25 and the limit block 4 connected to it are moved along the slide 28 on the surface of the main frame 1. Under the lubrication of the balls 27 on both sides, the position of the slide 25 can be smoothly changed, and then the position of the slide 25 is locked by aligning with the reserved hole 29 and screwing in the bolt 26. The limit block 4 sleeved on the outside of the wire 3 is adjusted according to the length of the wire 3, and the movement of the wire 3 is restricted by the circular hole 16.

[0033] Working principle: When the utility model is in use, the two surfaces of the basic main frame 1 are coated with an oxide coating 19. During the long-term use of the motor, the carbon brush 15 will inevitably produce friction and collision with the positioning sleeve 12 to produce powder. The circular groove 18 at the center is also fixed with an oxide film 17, which can prevent the carbon powder from sticking to the surface of the main frame 1 and falling into the bottom of the shell and accumulating there as the motor core moves. One end of the wire 3 is connected to the fixed block 11 through the welding point 11 and is installed on the main frame 1. The other end of the wire 3 is connected to the carbon brush 15 and fixed to the fixed In the positioning sleeve 12, pull out the guide rod 23 embedded in the socket 24 and adjust the distance between the card sleeve 5 and the positioning sleeve 12, and then fix it with the screw hole 21 in the threaded groove 20. Finally, move the slide 25 and the limit block 4 connected to it along the slide 28 on the surface of the main frame 1. Under the lubrication of the balls 27 on both sides, the position of the slide 25 can be smoothly changed, and then align with the reserved hole 29 and screw in the bolt 26 to lock the position of the slide 25. Adjust the limit block 4 sleeved on the outside of the wire 3 according to the length of the wire 3, and limit the movement of the wire 3 through the round hole 16.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A motor brush holder structure for preventing carbon powder from accumulating, comprising a main frame (1) and an arc-shaped groove (2), characterized in that: Four groups of arc grooves (2) are provided on the outer edge of the main frame (1), a circular groove (18) is provided at the center of the inside of the main frame (1), and an inner wall of the circular groove (18) is coated with an oxidation coating (19) around the periphery, and an oxide film (17) is coated on the front and rear ends of the surface of the main frame (1), positioning sleeves (12) are provided around the front end of the main frame (1), and a ring (22) is provided on the outer side of the positioning sleeve (12), a carbon brush (15) is inserted into the ring (22), a connecting groove (6) is provided behind the carbon brush (15), and an electric wire (3) is fixedly connected to the connecting groove (6), and a fixing block (11) is respectively installed at the four groups of oblique angles at the front end of the main frame (1), and welding points (10) are respectively welded between the two sides of the fixing block (11) and the main frame (1), and an electric wire (3) is connected between the fixing block (11) and the connecting groove (6).

2. The motor brush holder structure for preventing carbon powder accumulation according to claim 1, characterized in that: The oxide film (17) symmetrically covers the front and rear ends of the main frame (1), and the circular groove (18) is located at the center of the main frame (1).

3. The motor brush holder structure for preventing carbon powder accumulation according to claim 1, characterized in that: The front end of the positioning sleeve (12) is provided with a slot (13), and a fitting strip (14) is fixed on the inner wall of the slot (13). Both sides of the interior of the positioning sleeve (12) are provided with sockets (24), and a guide rod (23) is movably inserted in the sockets (24). A clamping sleeve (5) is fixed between the guide rods (23). Both sides of the surface of the positioning sleeve (12) are provided with thread grooves (20), and a bolt (21) is assembled in the thread groove (20). Both sides of the exterior of the positioning sleeve (12) are welded with positioning pieces (7), and a screw hole (8) is provided on the inner side of the positioning piece (7), and a screw (9) is assembled in the screw hole (8).

4. The motor brush holder structure for preventing carbon powder accumulation according to claim 3, characterized in that: The guide rods (23) are symmetrically fixed on both sides of the ferrule (5), and the guide rods (23) can slide back and forth along the insertion hole (24).

5. The motor brush holder structure for preventing carbon powder accumulation according to claim 3, characterized in that: The ferrule (5) is sleeved on the outside of the carbon brush (15), and the ferrule (5) and the carbon brush (15) are arranged in concentric circles.

6. The motor brush holder structure for preventing carbon powder accumulation according to claim 1, characterized in that: The surface of the front end of the main frame (1) is provided with four groups of slideways (28), and a slide plate (25) is movably connected in the slideway (28), a limit block (4) is fixed outside the slide plate (25), and a circular hole (16) is provided inside the limit block (4), and the electric wire (3) is embedded in the circular hole (16), and balls (27) are respectively embedded on both sides of the slide plate (25), and a bolt (26) is threadedly connected at the center of the ball (27), and reserved holes (29) are arranged in the inner wall of the slideway (28).

7. The motor brush holder structure for preventing carbon powder accumulation according to claim 6, characterized in that: The rod body of the second bolt (26) is embedded in the reserved hole (29), and the inner wall of the reserved hole (29) matches the external thread of the second bolt (26).

8. The motor brush holder structure for preventing carbon powder accumulation according to claim 6, characterized in that: The outer portion of the ball (27) is attached to the inner wall of the slideway (28), and the slide (25) can slide back and forth along the slideway (28).

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