Novel carbon brush structure applied to brush motor

Abstract

The invention discloses a novel carbon brush structure applied to a brush motor, and the structure comprises a first carbon brush holder which is a main installation structure, the interior of the first carbon brush holder is provided with a positioning hole and an installation groove, and the middle section of the first carbon brush holder is provided with a through hole; and carbon brush boxes are located on the top surface of the first carbon brush holder, connecting grooves are formed in the carbon brush boxes, the number of the carbon brush boxes is four, and the carbon brush boxes are annularly distributed on the outer surface of the first carbon brush holder. According to the novel carbon brush structure applied to the brush motor, after the arrangement mode of the carbon layers of the carbon brush is changed, carbon powder generated by friction between the carbon brushes and a commutator is remarkably reduced, the service life is effectively prolonged, meanwhile, the standby carbon brush is arranged in the carbon brush box, and when the main carbon brush is abraded and consumed to a dangerous value, the standby carbon brush can replace the main carbon brush at the first time, exchange between the carbon brush and the commutator can be well completed, and the situation of internal short circuit caused by the fact that the carbon brush is not replaced in time after being consumed is avoided.

Description

technical field [0001] The invention relates to the technical field of motor parts, in particular to a novel carbon brush structure applied to a brushed motor. Background technique [0002] Due to factors such as short service life and relatively low control precision, brushless motors are gradually being seized by brushless motors in the market, but they still have the advantages of low cost, simple structure, and strong overload capacity, which can improve the use of brushed motors Only by further expanding its low-cost advantages can the life span be firmly grasped in the market. Due to its own structure, the brushed motor needs to contact and conduct electricity with the commutator. When the motor is working, the commutator needs to rotate together with the rotor, while the carbon brush It is fixed, so the contact surface between them will continue to rub, which also causes the carbon brush to be continuously worn, and the carbon powder will continue to peel off. [000...

AI Technical Summary

Problems solved by technology

[0002] Due to factors such as short service life and relatively low control precision, brushless motors are gradually being seized by brushless motors in the market, but they still have the advantages of low cost, simple structure, and strong overload capacity, which can improve the use of brushed motors Only by further expanding its low-cost advantages can the life span be firmly grasped in the market. Due to its own structure, the brushed motor needs to contact and conduct electricity with the commutator. When the motor is working, the commutator needs to rotate together with the rotor, while the carbon brush It is fixed, so the contact surface between them will continue to rub, which will also cause the carbon brush to be continuously worn, and the carbon powder will continue to peel off

[0003] However, the toner peeled off in a dry environment can be discharged from the vent hole and drain hole reserved in the motor, but the toner may adhere to the reversing groove in a humid environment. When the reversing groove accumulates too much toner, The positive and negative poles of the motor will be conducted by the carbon powder, which will cause a short circuit and damage the parts. Therefore, a new carbon brush structure applied to the brushed motor is needed

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