Motorized folding device for exterior rearview mirrors of automobiles

Abstract

The invention discloses an electric folding device for exterior rearview mirrors of automobiles, which comprises a housing (6), a base (3), a base (2), a pin shaft (7), and a driving housing (6). The electric drive unit that rotates relative to the base (2) around the axis of the pin shaft (7), the spring (5) fitted on the pin shaft (7) and the housing (6) can be manually moved relative to the The base (2) rotates the connecting piece (4). A cam assembly is arranged between the connecting piece (4), the base (3) and the base (2). During the electric folding process, the Driven by the electric drive unit, the cam assembly slides relative to each other and under the elastic force of the spring (5), the base (3) is lifted upwards and rotated along the pin shaft (7). The invention has the advantages of compact structure, better anti-shaking performance of the rearview mirror, smoother electric folding process, and less prone to folding failure phenomenon.

Description

technical field [0001] The invention belongs to the field of automobile exterior rearview mirrors, in particular to an electric folding device for automobile exterior rearview mirrors. Background technique [0002] The exterior rearview mirror is an auto accessory for the driver to observe the running status of the rear vehicles and pedestrians while driving. It is a necessary guarantee for safe driving. By adjusting the installation angle of the exterior rearview mirror, the driver can observe a specific direction The field of view is convenient for safe driving. Therefore, the importance of exterior rearview mirrors is well known. And because the exterior rearview mirrors are installed on both sides of the car, the exterior rearview mirrors installed on the outside of the car often use an electric drive folding device to prevent the car from driving in a narrow space or in a complicated place with many pedestrians. The mirror collides with other vehicles and pedestrians,...

AI Technical Summary

Problems solved by technology

But the problem is that if there is a gap, the lower end surface of the mirror base plate lacks the support of the mirror bracket, which means that the mirror base plate is completely supported by the pin shaft for folding, and is compressed by the spring fitted on the pin shaft to resist shaking. The ability is poor, and it is easy to shake during driving, especially when the speed is fast or the road is bumpy

In addition, if there is a gap, there will be a lot of wind noise during driving. In addition, the mirror substrate and the mirror bracket are all made of plastic injection molding. With long-term use, the material is prone to aging, and the wind and sand are mixed. Factors, it is easy to cause resistance due to rotation, and the current is too high when the motor is running, resulting in folding failure and failure to fold in place

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