Carbon brush box of windshield wiper motor and windshield wiper motor assembly

Abstract

The invention relates to the technical field of windshield wiper motors, in particular to a carbon brush box of a windshield wiper motor. To overcome technical problems in the prior art, the invention provides the windshield wiper motor carbon brush box which is more convenient to install a torsional spring, and also provide a windshield wiper motor assembly which is more convenient to assemble. The carbon brush box of the windshield wiper motor comprises a box body, wherein the top of the box body is provided with a brush braid groove; the top of the side wall, provided with a torsional spring clamping groove, of the box body is provided with a lug plate; the lug plate and the side wall provided with the torsional spring clamping groove are coplanar, and the lug plate is provided with a notch facing the direction of a carbon brush outlet. The windshield wiper motor assembly comprises a circuit board, a carbon brush, a torsion spring and the carbon brush box of the windshield wiper motor, wherein the box body is fixed on the circuit board, the carbon brush is arranged in the box body, a brush braid of the carbon brush is located in a brush braid groove and is in sliding fit with the brush braid groove, a torsion spring supporting column is fixed on the part, close to the box body, of the circuit board, the torsion spring is arranged on the torsion spring supporting column in a sleeved mode and can rotate relatively, one clamping pin of the torsion spring is located in the notch, and the other clamping pin of the torsion spring is in sliding fit with the torsion spring clamping groove and makes contact with the tail of the carbon brush.

Description

technical field [0001] The invention relates to the technical field of wiper motors, in particular to a carbon brush box of a wiper motor. Background technique [0002] The carbon brush box of the wiper motor is in the shape of a groove, and the carbon brush is located in the carbon brush box. The head of the carbon brush faces the outlet on the carbon brush box, and the tail of the carbon brush faces the inlet on the carbon brush box. The box body of the box slides along the length of the box body. In order to make the head of the carbon brush close to the commutator, a torsion spring is provided at the tail of the carbon brush. One clamping foot of the torsion spring contacts the tail of the carbon brush, and the torsion spring The other pin is in contact with the shell of the motor, and the torsion spring exerts elastic force on the carbon brush so that the carbon brush is close to the commutator. The foot is in contact with the tail of the carbon brush, and finally the ...

AI Technical Summary

Problems solved by technology

[0002] The carbon brush box of the wiper motor is in the shape of a groove, and the carbon brush is located in the carbon brush box. The head of the carbon brush faces the outlet on the carbon brush box, and the tail of the carbon brush faces the inlet on the carbon brush box. The box body of the box slides along the length direction of the box body. In order to make the head of the carbon brush close to the commutator, a torsion spring is provided at the tail of the carbon brush. One clip of the torsion spring contacts the tail of the carbon brush, and the torsion spring The other pin is in contact with the shell of the motor, and the torsion spring exerts elastic force on the carbon brush so that the carbon brush is close to the commutator. The foot is in contact with the tail of the carbon brush, and finally the other clamping foot of the torsion spring is inserted into the gap of the brush box, and finally the shell is fixed. You can't see the position of the torsion spring's clamping feet when installing the shell. The torsion spring is easy to install and get stuck, and it is inconvenient to install the torsion spring.

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