CN-224218234-U - Copper sleeve type brush motor

Abstract

The utility model discloses a copper sleeve type brush motor, which relates to the field of motor design and comprises a motor shell and a motor cover plate, wherein a rotor is installed in the motor shell in a rotating fit manner, the motor cover plate covers the rotor in the motor shell, two carbon brush structures are installed in the motor cover plate, the inner ends of the carbon brush structures are propped against the rotor, the carbon brush structures comprise carbon brush copper sleeves, carbon brush main bodies and torsion springs, the carbon brush copper sleeves are fixedly installed on the inner sides of the motor cover plate, the carbon brush main bodies are installed in the carbon brush copper sleeves in a sliding fit manner, one ends of the torsion springs are propped against the inner sides of the motor cover plate, the other ends of the torsion springs are propped against the outer ends of the carbon brush main bodies, a commutator is fixedly installed on the rotor, and the torsion springs drive the inner ends of the carbon brush main bodies to be propped against the commutator for electric connection.

Inventors

• CHEN JINHONG
• HUANG BO

Assignees

• 东莞市国梦电机有限公司

Dates

Publication Date

20260508

Application Date

20250527

Claims (10)

1. 1. The utility model provides a copper sheathing formula has brush motor, includes motor housing and motor cover plate, rotor is installed to interior normal running fit of motor housing, and motor cover plate covers the rotor in motor housing, installs two carbon brush structures in the motor cover plate, and the inner end of carbon brush structure supports on the rotor, its characterized in that: the carbon brush structure comprises a carbon brush copper sleeve, a carbon brush main body and a torsion spring; The carbon brush copper sleeve is fixedly arranged on the inner side of the motor cover plate, the carbon brush main body is arranged in the carbon brush copper sleeve in a sliding fit manner, one end of the torsion spring is propped against the inner side of the motor cover plate, and the other end of the torsion spring is propped against the outer end of the carbon brush main body; the commutator is fixedly arranged on the rotor, and the torsion spring drives the inner end of the carbon brush main body to abut against the commutator of the rotor for electric connection.
2. 2. The brush motor of claim 1, wherein the carbon brush copper sleeve comprises a first copper sheet and a second copper sheet, the first copper sheet and the second copper sheet are spliced and assembled with each other, the first copper sheet is fixedly arranged on the inner side of a motor cover plate, and the carbon brush main body is arranged between the first copper sheet and the second copper sheet in a sliding fit manner.
3. 3. The brush motor of claim 2, wherein the second copper sheet has a first transverse groove formed on an outer side thereof, the first transverse groove is parallel to the sliding direction of the carbon brush body, and one end of the torsion spring passes through the first transverse groove and abuts against an outer end of the carbon brush body.
4. 4. A copper sheathing type brush motor according to any one of claims 1-3, wherein two positioning rods are integrally formed on the inner side of the motor cover plate, a cutting groove is formed in the middle of each positioning rod, torsion springs of two carbon brush structures are sleeved on the positioning rods in a one-to-one correspondence manner, the inner ends of the torsion springs are installed in the cutting groove in a clearance fit manner, and the outer ends of the torsion springs are propped against the carbon brush main body.
5. 5. The brush motor of claim 2 or 3, wherein a second transverse groove is formed on the outer side of the second copper sheet, the direction of the second transverse groove is parallel to the sliding direction of the carbon brush main body, a sliding rod is fixedly arranged on the side wall of the outer end of the carbon brush main body, and the sliding rod is installed in the second transverse groove in a clearance fit manner.
6. 6. The brush motor of claim 2, wherein the first copper sheet is formed with a plurality of assembly holes, edges of two sides of the second copper sheet are bent towards the direction of the first copper sheet, an effective space for sliding the carbon brush main body is formed between the second copper sheet and the first copper sheet, and a plurality of inserting positions are formed at the edges of two sides of the second copper sheet and are inserted into the assembly holes in a one-to-one clearance fit manner for splicing and assembling.
7. 7. A copper sheathing brush motor according to claim 2 or 6, wherein the outer end of the first copper sheet extends out of the motor cover plate.
8. 8. The copper sheathing formula brush motor of claim 6, wherein a plurality of grafting positions of second copper sheet pass the equipment hole and stretch out the motor apron setting.
9. 9. The brush motor of claim 8, wherein two concave grooves are formed in the outer side of the motor cover plate, second copper sheets of the two carbon brush structures are arranged on the inner sides of the concave grooves in a one-to-one correspondence mode, and a plurality of inserting positions penetrate through the motor cover plate and are arranged in the concave grooves.
10. 10. The copper-clad brush motor of claim 1, wherein the copper wire winding is fixedly arranged on the rotor, and the copper wire winding and the commutator are electrically connected with each other.

Description

Copper sleeve type brush motor Technical Field The utility model relates to the field of motor design, in particular to a copper sleeve type brush motor. Background A brushed motor is a rotating electrical machine that incorporates brush means to convert electrical energy into mechanical energy (motor) or mechanical energy into electrical energy (generator). The brush motor is the basis of all motors, and has the characteristics of quick starting, timely braking, smooth speed regulation in a large range, relatively simple control circuit and the like. The prior patent (bulletin number: CN217508554U, bulletin day: 2022.09.27) discloses a DC brush motor, which uses a spring plate to drive a carbon brush to prop against a commutator for electric connection. In the above scheme and the prior art, the carbon brush structure in the brush motor generally adopts a common spring plate structure, the elasticity of the spring plate is used for always abutting against the commutator of the rotor for electric connection, but the stability of the spring plate is poor, especially for the motor with higher torque requirement, the carbon brush of the spring plate structure is easy to damage, so that the brush motor cannot work normally, and the risk of short circuit is also caused when the fault is serious. At present, most of brush motors applied to floor washers adopt the most traditional shrapnel carbon brushes, and the stability of the brush motors is reduced after long-time use, so that the service life of the floor washers is influenced. Disclosure of utility model The utility model provides a technical scheme capable of solving the problems in order to overcome the defects of the prior art. The copper sleeve type brush motor comprises a motor shell and a motor cover plate, wherein a rotor is mounted in the motor shell in a rotating fit manner, the motor cover plate covers the rotor in the motor shell, two carbon brush structures are mounted in the motor cover plate, and the inner ends of the carbon brush structures are propped against the rotor; the carbon brush structure comprises a carbon brush copper sleeve, a carbon brush main body and a torsion spring; The carbon brush copper sleeve is fixedly arranged on the inner side of the motor cover plate, the carbon brush main body is arranged in the carbon brush copper sleeve in a sliding fit manner, one end of the torsion spring is propped against the inner side of the motor cover plate, and the other end of the torsion spring is propped against the outer end of the carbon brush main body; the commutator is fixedly arranged on the rotor, and the torsion spring drives the inner end of the carbon brush main body to abut against the commutator of the rotor for electric connection. The carbon brush copper sleeve comprises a first copper sheet and a second copper sheet, the first copper sheet and the second copper sheet are mutually spliced and assembled, the first copper sheet is fixedly arranged on the inner side of a motor cover plate, and a carbon brush main body is arranged between the first copper sheet and the second copper sheet in a sliding fit mode. Further, a first transverse groove is formed in the outer side of the second copper sheet, the direction of the first transverse groove is parallel to the sliding direction of the carbon brush main body, and one end of the torsion spring penetrates through the first transverse groove and abuts against the outer end of the carbon brush main body. Further, two positioning rods are integrally formed on the inner side of the motor cover plate, a cutting groove is formed in the middle of each positioning rod, torsion springs of two carbon brush structures are sleeved on the corresponding positioning rods one by one, the inner ends of the torsion springs are installed in the cutting groove in a clearance fit mode, and the outer ends of the torsion springs are propped against the carbon brush main body. Further, a second transverse groove is formed in the outer side of the second copper sheet, the direction of the second transverse groove is parallel to the sliding direction of the carbon brush main body, a sliding rod is fixedly arranged on the side wall of the outer end of the carbon brush main body, and the sliding rod is installed in the second transverse groove in a clearance fit mode. Further, a plurality of assembly holes are formed in the first copper sheet, two side edges of the second copper sheet are bent towards the direction of the first copper sheet, an effective space for the carbon brush main body to slide is formed between the second copper sheet and the first copper sheet, a plurality of inserting positions are formed in the two side edges of the second copper sheet, and the inserting positions are inserted into the assembly holes in a one-to-one clearance fit mode for splicing and assembling. Further, the outer end of the first copper sheet extends out of the motor cover plate. Further, a plurality of insert