Motor brush holder structure

Abstract

The utility model discloses a motor brush holder structure, which comprises a positioning disc, a plurality of circumferentially distributed mounting holes arranged on the surface of the positioning disc, and a plurality of positioning frames detachably arranged on the surface of the positioning disc, carbon brush bodies are slidably connected in the positioning frames, and springs are fixedly connected between the carbon brush bodies and the inner walls of the positioning frames. The side wall of the positioning frame is fixedly connected with a positioning pin, the positioning pin penetrates through the mounting hole, the positioning pin is sleeved with a positioning sleeve, and a positioning hole is formed in the positioning sleeve. According to the utility model, the positioning pin firstly penetrates through the mounting hole in the positioning disc, then the positioning sleeve is mounted on the positioning pin, the positioning pin penetrates through the positioning hole, then the double-end stud penetrates through the positioning sleeve and the positioning pin, and finally the nuts are mounted at the two ends of the double-end stud in a threaded manner, so that the nuts abut against the end part of the positioning sleeve; and finally, the nut is pressed and fixed through the locking assembly, so that the nut is further locked, and looseness is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of motor components, in particular to a motor brush holder structure. Background Art

[0002] Carbon brushes, also known as electric brushes, are sliding contact components widely used in many electrical devices. Carbon brushes are primarily made of graphite, impregnated graphite, and metallic (copper and silver) graphite. Carbon brushes transfer energy or signals between the fixed and rotating parts of motors, generators, or other rotating machinery. They are typically made of pure carbon with a coagulant and are typically square in shape. They are attached to a metal bracket and secured to the shaft by a spring. As the motor rotates, electrical energy is transferred to the coils via the commutator. Because they are primarily composed of carbon, they are susceptible to wear and should be regularly maintained and replaced, and carbon deposits removed.

[0003] In the prior art, the carbon brush holder of the motor is usually fixed directly with screws when the carbon brushes are connected. However, simply fixing with screws may cause loosening due to motor vibration, which poses a certain safety hazard. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a motor brush holder structure, which solves the problems raised in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a motor brush holder structure, comprising a positioning plate, a plurality of circumferentially distributed mounting holes opened on the surface of the positioning plate, and a plurality of positioning frames detachably mounted on the surface of the positioning plate, a carbon brush body being slidably connected to the interior of the positioning frame, a spring being fixedly connected between the carbon brush body and the inner wall of the positioning frame, a positioning pin being fixedly connected to the side wall of the positioning frame, the positioning pin being arranged through the mounting hole, a positioning sleeve being sleeved on the positioning pin, a positioning hole being opened on the positioning sleeve, the positioning pin being arranged through the positioning hole, a stud being movably inserted between the positioning sleeve and the positioning pin, a socket being opened on the positioning pin, the stud being arranged through the socket, nuts being threadedly sleeved on both ends of the stud, and the nut being in contact with the end of the positioning sleeve.

[0008] Preferably, a locking assembly is provided on the positioning sleeve, and the locking assembly includes a screw rod rotatably inserted on the side wall of the positioning sleeve, a positioning bar threaded on the screw rod, and a guide rod fixed on the side wall of the positioning sleeve, and the end of the guide rod is movably inserted through the positioning bar. Both ends of the positioning bar are fixedly connected with a pressure block, and the pressure block is used to make the nut contact each other.

[0009] Preferably, one end of the pressing block close to the nut is flat.

[0010] Preferably, the number of positioning pins on each side wall of the positioning frame is two, and the positioning pins are in the shape of round rods.

[0011] Preferably, the center of the positioning plate has an axial hole, and one end of the carbon brush body close to the axial hole is arc-shaped.

[0012] (3) Beneficial effects

[0013] The utility model provides a motor brush holder structure, which has the following beneficial effects:

[0014] 1. In the present invention, the locating pin is first passed through the mounting hole on the locating plate, and then the locating sleeve is installed on the locating pin. The locating pin is set through the locating hole, and then the stud is passed through the locating sleeve and the locating pin. Finally, nuts are threadedly installed on both ends of the stud so that the nut contacts the end of the locating sleeve. Finally, the nut is tightened and fixed by the locking assembly, thereby further locking the nut to prevent it from loosening.

[0015] 2. In the present invention, the screw is rotated to drive the positioning bar to move linearly, and the positioning bar drives the two pressure blocks to move linearly close to the nut. The pressure blocks contact the nut to lock the nut and prevent the nut from loosening and deflecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front perspective structural diagram of a motor brush holder structure proposed in the utility model;

[0017] Figure 2 This is a rear perspective structural diagram of a motor brush holder structure proposed by the utility model;

[0018] Figure 3 This is an exploded three-dimensional structural diagram of a motor brush holder structure proposed by the utility model;

[0019] Figure 4 for Figure 3 A magnified structure diagram.

[0020] In the figure: 1. Positioning plate; 101. Mounting hole; 2. Positioning frame; 3. Spring; 4. Carbon brush body; 5. Positioning pin; 501. Socket; 6. Positioning sleeve; 601. Positioning hole; 7. Locking assembly; 701. Screw; 702. Guide rod; 703. Positioning strip; 704. Pressure block; 8. Stud; 9. Nut. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a motor brush holder structure, including a positioning plate 1, a plurality of circumferentially distributed mounting holes 101 opened on the surface of the positioning plate 1, and a plurality of positioning frames 2 detachably mounted on the surface of the positioning plate 1, a carbon brush body 4 is slidably connected to the interior of the positioning frame 2, a spring 3 is fixedly connected between the carbon brush body 4 and the inner wall of the positioning frame 2, and the spring 3 can push the carbon brush body 4 to always contact the rotating shaft of the motor, a positioning pin 5 is fixedly connected to the side wall of the positioning frame 2, the positioning pin 5 is set through the mounting hole 101, a positioning sleeve 6 is sleeved on the positioning pin 5, a positioning hole 601 is opened on the positioning sleeve 6, the positioning pin 5 is set through the positioning hole 601, a stud 8 is movably inserted between the positioning sleeve 6 and the positioning pin 5, a socket 501 is opened on the positioning pin 5, the stud 8 is set through the socket 501, and nuts 9 are threadedly sleeved on both ends of the stud 8, and the nut 9 is in contact with the end of the positioning sleeve 6.

[0023] First, pass the locating pin 5 through the mounting hole 101 on the locating plate 1, then install the locating sleeve 6 on the locating pin 5, and set the locating pin 5 through the locating hole 601. Then, pass the stud 8 through the locating sleeve 6 and the locating pin 5, and set the stud 8 through the jack 501. Finally, nuts 9 are threadedly installed on both ends of the stud 8 so that the nut 9 contacts the end of the locating sleeve 6. Finally, the nut 9 is tightened and fixed by the locking assembly 7, thereby further locking the nut 9 to prevent it from loosening.

[0024] A locking assembly 7 is provided on the positioning sleeve 6, and the locking assembly 7 includes a screw rod 701 rotatably inserted on the side wall of the positioning sleeve 6, a positioning bar 703 threadedly sleeved on the screw rod 701, and a guide rod 702 fixed on the side wall of the positioning sleeve 6. The end of the guide rod 702 is movably inserted through the positioning bar 703. Both ends of the positioning bar 703 are fixedly connected with a pressure block 704, and the pressure block 704 is used to make contact with the nut 9.

[0025] Rotate the screw rod 701 to drive the positioning bar 703 to move linearly toward the positioning sleeve 6. The positioning bar 703 drives the two pressure blocks 704 to move linearly close to the nut 9. The pressure blocks 704 contact the nut 9 to lock the nut 9, preventing the nut 9 from loosening and deflecting, thereby improving the stability of the brush holder during operation.

[0026] One end of the pressing block 704 close to the nut 9 is a flat surface, and the nut 9 is a hexagonal nut structure, so that the pressing block 704 contacts one of the flat surfaces of the nut 9, thereby increasing the contact area for compression.

[0027] There are two positioning pins 5 on the side wall of each positioning frame 2 , and the positioning pins 5 are in the shape of round rods.

[0028] The center of the positioning plate 1 has an axial hole, and the carbon brush body 4 is arc-shaped at one end close to the axial hole. The output shaft of the motor is located inside the axial hole. The spring 3 can push the carbon brush body 4 to always contact the rotating shaft of the motor.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor brush holder structure, characterized by: The invention comprises a positioning plate (1), a plurality of circumferentially distributed mounting holes (101) provided on the surface of the positioning plate (1), and a plurality of positioning frames (2) detachably mounted on the surface of the positioning plate (1); a carbon brush body (4) is slidably connected to the interior of the positioning frame (2); a spring (3) is fixedly connected between the carbon brush body (4) and the inner wall of the positioning frame (2); a positioning pin (5) is fixedly connected to the side wall of the positioning frame (2); the positioning pin (5) is arranged through the mounting hole (101); the positioning pin (5) The upper sleeve is provided with a positioning sleeve (6), a positioning hole (601) is provided on the positioning sleeve (6), the positioning pin (5) is arranged through the positioning hole (601), a stud (8) is movably inserted between the positioning sleeve (6) and the positioning pin (5), a socket (501) is provided on the positioning pin (5), the stud (8) is arranged through the socket (501), both ends of the stud (8) are threadedly sleeved with nuts (9), and the nuts (9) are in contact with the end of the positioning sleeve (6).

2. The motor brush holder structure according to claim 1, characterized in that: The positioning sleeve (6) is provided with a locking assembly (7), and the locking assembly (7) comprises a screw rod (701) rotatably inserted on the side wall of the positioning sleeve (6), a positioning bar (703) threadedly sleeved on the screw rod (701), and a guide rod (702) fixed on the side wall of the positioning sleeve (6), the end of the guide rod (702) movably passes through the positioning bar (703), and both ends of the positioning bar (703) are fixedly connected with a pressure block (704), and the pressure block (704) is used to make contact with the nut (9).

3. The motor brush holder structure according to claim 2, characterized in that: One end of the pressing block (704) close to the nut (9) is flat.

4. The motor brush holder structure according to claim 1, characterized in that: There are two positioning pins (5) on the side wall of each positioning frame (2), and the positioning pins (5) are in the shape of round rods.

5. The motor brush holder structure according to claim 1, characterized in that: The center of the positioning disk (1) has an axial hole, and one end of the carbon brush body (4) close to the axial hole is in an arc shape.

Images