An automatic control device for axial movement of wiper motor

Abstract

The invention relates to an automatic axial end-play control device of a windscreen wiper motor. The automatic axial end-play control device of the windscreen wiper motor comprises a motor end cover and a casing. A rotor shaft is arranged in the casing, is sleeved with a plastic part positioning and control device, and is connected to the position of a bearing of the end cover through the plastic part positioning and control device; the plastic part positioning and control device comprises a base and a connecting end provided with a through hole; a torsion spring is arranged at the connecting end; two slope-shaped boss sections connected end to end are arranged on the base in the circumferential direction; the thickness of each boss becomes thinner in the forward 180-degree rotating direction, and becomes thicker in the reversed 180-degree rotation direction; the thickness, in the position of the bearing, of the end cover becomes thinner in the corresponding forward 180-degree rotation direction, and becomes thicker in the reversed 180-degree rotation direction; a connector used for installing the torsion spring is formed in the transverse thickest position in the 180-degreerotation direction of the end cover. The automatic axial end-play control device of the windscreen wiper motor is used in cooperation with an automatic plastic part positioning device to adjust the axial clearance of the rotor when the motor rotor is assembled and can automatically eliminate accumulated errors of all parts in the assembling process and compensate the clearance caused by mutual friction in the operating process.

Description

technical field [0001] The invention relates to a wiper motor, in particular to an automatic control device for the axial movement of the wiper motor. Background technique [0002] When the current wiper motor is working, the axial movement of the rotor cannot be effectively controlled. The accumulated error between the various parts during assembly and the gap caused by mutual wear during operation will make the forward and reverse bidirectional rotation of the wiper motor unable to always Controlled within the scope of the design requirements, the wiper of the wiper cannot swing left and right within the controlled range, so it is necessary to improve the motor structure to effectively control the axial movement of the rotor. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an automatic control device for the axial movement of the wiper motor in order to solve the problem that the axial movement of the rotor of ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automatic control device for axial movement of the wiper motor in order to solve the problem that the axial movement of the rotor of the wiper motor cannot be controlled in the above-mentioned background technology

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