Direct current motor brush
By improving the installation structure and material processing of the carbon brush, the problems of unstable connection and high friction of traditional carbon brushes are solved, more stable and smooth carbon brush sliding is achieved, and the operating reliability of the motor is improved.
Patent Information
- Application Number
- CN202422683194.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Traditional carbon brushes have poor connection strength and are easy to loosen. The high friction makes the carbon brushes inflexible and may cause motor vibration and jamming problems.
The brush box is installed between the square baffles of the base, and the ear plate is fixed by positioning grooves and riveted columns. Flanges are provided on both sides of the carbon brush to reduce friction, the spring positioning is stable, the wire end is heated and shrunk to improve wear resistance, and the inductor coil positioning groove improves installation stability.
It enhances the installation stability and sliding smoothness of the carbon brush, reduces friction, prevents loosening and jamming, and improves the operating stability of the motor.
Smart Images
Figure CN223462567U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to motor field, especially relate to a DC motor brush. BACKGROUND
[0002] Carbon brush wear will cause motor vibration aggravation. Carbon brush plays the role of transmitting electric energy in motor, when carbon brush wears seriously, the poor contact between carbon brush and slip ring can cause vibration of motor in the running process. And the brush box outside traditional carbon brush only connects through the riveting column on both sides of the ear plate and the base, the connection strength is poor, and long-term vibration can easily cause its loosening. In addition, the friction between traditional carbon brush and brush box is large, which causes the sensitivity of carbon brush to decline, and seriously causes the shell to be stuck. SUMMARY
[0003] The utility model wants to solve the technical problem to provide a kind of DC motor brush that installation is more stable, and carbon brush slides more smoothly.
[0004] To solve the above problems, the utility model adopts the technical scheme including: base, commutator arranged in the center of the base and brush head assembly arranged in the base in circumferential arrangement, the brush head assembly includes brush box, carbon brush arranged in the brush box and spring arranged to the rear end of the carbon brush, the ear plate is integrally formed on the bottom of the brush box, and mounting hole is arranged on the ear plate, and the utility model is characterized by: the brush box is installed between the two square baffles on the bottom of the base, the square baffle is provided with positioning groove corresponding to the ear plate, the riveting column is arranged in the positioning groove and embedded in the mounting hole of the ear plate, and the positioning groove is provided with inverted hook hung on the ear plate.
[0005] The DC motor brush is characterized in that: at least two first flanges are arranged on both sides of the carbon brush, and the first flanges are in contact with the inner wall of the brush box.
[0006] The DC motor brush is characterized in that: at least two second flanges are arranged on the bottom of the carbon brush, and the second flanges are in contact with the inner wall of the brush box.
[0007] The DC motor brush is characterized in that: a tapered column is arranged at the rear end of the carbon brush for positioning the spring.
[0008] The DC motor brush is characterized in that: an inductance coil is arranged between the adjacent brush head assemblies corresponding to the base, and an arc-shaped groove is arranged on the base for positioning the inductance coil.
[0009] The DC motor brush is characterized in that: a wire is welded on the carbon brush, and a heat-shrink sleeve is arranged at the end of the wire.
[0010] The DC motor brush has the advantages that the brush box is installed between the two square baffles at the bottom of the base, the ear plate is positioned through the positioning groove on the square baffle, the ear plate is fixed through riveting and the barb in the positioning groove, and the stability of installation is improved, and loosening is prevented.
[0011] The utility model makes further explanation in combination with the drawing of the specification. DRAWINGS
[0012] Figure 1 It is the structure schematic diagram of the DC motor brush of the utility model;
[0013] Figure 2 It is Figure 1 A-A direction section view of
[0014] Figure 3 It is Figure 1 B-B direction section view of
[0015] Figure 4 It is the explosion drawing of the brush head subassembly of the utility model;
[0016] Figure 5 It is the structure schematic diagram of the base of the utility model;
[0017] Figure 6 It is Figure 3 Local enlarged view of DETAILED DESCRIPTION
[0018] Referring to the drawing, Figures 1-6 The DC motor brush of the utility model, including base 1, commutator 2 that is established in the center of base 1 and brush head subassembly 3 that is arranged in the base 1 with circumferential arrangement mode. Brush head subassembly 3 includes brush box 4, carbon brush 5 that is established in the brush box 4 and spring 6 that is established to the rear end of carbon brush 5. The ear plate 7 is integrally formed in the bottom of the brush box 4 two sides, and the mounting hole 8 is arranged on the ear plate 7. The brush box 4 is installed between the two square baffles 9 at the bottom of the base 1, and the positioning groove 10 that is adapted to the ear plate 7 is arranged on the square baffle 9. The riveting column 11 that is embedded in the mounting hole 8 of the ear plate 7 is arranged in the positioning groove 10. The barb 12 that is hung on the ear plate 7 is arranged on both sides of the positioning groove 10. The ear plate 7 is connected with the barb 12 by forced pressing mode.
[0019] Preferably, the carbon brush 5 is provided with two first flanges 14 arranged at intervals on both sides, and the first flanges 14 are in contact with the inner wall of the brush box 4. The carbon brush 5 is provided with two second flanges 15 arranged at intervals at the bottom, and the second flanges 15 are in contact with the inner wall of the brush box 4. The first flanges 14 and the second flanges 15 are in contact with the inner wall of the brush box 4 to reduce the contact area and the friction, so that the carbon brush 5 slides more smoothly.
[0020] Preferably, the carbon brush 5 is provided with a tapered column 16 at the rear end for positioning the spring 6. The spring 6 can press the carbon brush 5 more stably and uniformly, so as to prevent the carbon brush from being worn out due to uneven force.
[0021] Preferably, the base 1 is provided with an inductor coil 17 between the adjacent brush head assemblies 3, and the base 1 is provided with an arc-shaped groove 18 for positioning the inductor coil 17. The arc-shaped groove 18 is used to improve the stability of the installation of the inductor coil 17.
[0022] Preferably, the carbon brush 5 is welded with a wire 19, and the end of the wire 19 is provided with a heat shrink sleeve 20. Since the end of the wire 19 is frequently rubbed with the brush box 4, the heat shrink sleeve 20 is used to improve the wear resistance of the wire 19.
[0023] As described above, the utility model is not limited in any form, although the utility model has been disclosed as above with a preferred embodiment, however, it is not used to limit the utility model, any person skilled in the art can make some changes or modifications to the equivalent embodiment within the scope of the utility model without departing from the technical scheme of the utility model, but any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belong to the scope of the utility model technical scheme.
Claims
1. A direct current motor brush, comprising a base (1), a commutator (2) arranged in the center of the base (1), and a brush head assembly (3) arranged in a circumferential manner in the base (1), the brush head assembly (3) comprising a brush box (4), a carbon brush (5) arranged in the brush box (4), and a spring (6) arranged to the rear end of the carbon brush (5), and the bottom of the brush box (4) is integrally formed with an ear plate (7) on each side, and the ear plate (7) is provided with a mounting hole (8), characterized in that: The brush box (4) is installed between two square baffles (9) at the bottom of the base (1), the square baffles (9) are provided with positioning grooves (10) adapted to the ear plates (7), the positioning grooves (10) are provided with riveting columns (11) embedded in the mounting holes (8) of the ear plates (7), and the positioning grooves (10) are provided with hooks (12) hung on the ear plates (7). 2. The DC motor brush of claim 1, wherein: The carbon brush (5) is provided with at least two first flanges (14) arranged at intervals on both sides, which are in contact with the inner wall of the brush box (4).
3. The DC motor brush of claim 2, wherein: The carbon brush (5) is provided with at least two second flanges (15) arranged at intervals at the bottom, which are in contact with the inner wall of the brush box (4).
4. The DC motor brush of claim 1, wherein: The rear end of the carbon brush (5) is provided with a conical column (16) for positioning the spring (6).
5. The DC motor brush of claim 1, wherein: The base (1) is provided with an inductor coil (17) between the adjacent brush head assemblies (3), and the base (1) is provided with an arc-shaped groove (18) for positioning the inductor coil (17).
6. The DC motor brush of claim 1, wherein: The carbon brush (5) is welded with a wire (19), and the end of the wire (19) is provided with a heat shrink sleeve (20).