Vehicle headlamp dimming driving device

Abstract

The invention relates to a vehicle headlamp dimming driving device. The vehicle headlamp dimming driving device comprises a dimming screw rod and a flexible transmission shaft assembly; one end of the flexible transmission shaft assembly is a hard connecting end; the other end of the flexible transmission shaft assembly is a soft connecting end; a driven bevel gear is mounted at the tail part of the dimming screw rod; a front mounting bracket is arranged at the hard connecting end of the flexible transmission shaft assembly; a rear mounting bracket is arranged at the soft connecting end of the flexible transmission shaft assembly; a driving bevel gear is connected with the hard connecting end of the flexible transmission shaft assembly through the front mounting bracket; a cross-shaped adjusting joint is connected with the soft connecting end of the flexible transmission shaft assembly through an inner hole of the rear mounting bracket; the driving bevel gear is engaged with the driven bevel gear; and a protective sleeve is arranged outside the flexible transmission shaft assembly. The vehicle headlamp dimming driving device provided by the invention has the advantages that the structure is simple, the dimming driving device can be conveniently placed in any spatial position outside a headlamp rear cover shell by using a soft and hard connection flexible driving mode, and the dimming screw rod on a dimming device is driven by the flexible transmission shaft assembly to adjust the illumination angle of the headlamp.

Description

technical field [0001] The invention relates to a driving device, in particular to a vehicle headlight dimming driving device. Background technique [0002] The irradiation angle of the headlight is an important parameter for the adjustment of the light beam, which directly affects the driving safety. The existing vehicle headlights, no matter manual adjustment or electric adjustment, all need a dimming point to drive the dimming mechanism. Since the center of rotation of most dimming points and the center of rotation of the dimming screw are not on the same straight line, the dimming driving device must have space transmission for relative movement, and the transmission parts can bend around various obstacles to achieve long-distance transmission and rotation. For the purpose of sports, the installation position of the lights on some vehicles and other parts on the vehicle, the body, etc. are limited by the space structure, the position of the dimming point that can be set...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing headlight dimming device is limited by the space structure, the position of the set dimming point may deviate from the position of the dimming screw on the lamp, and some complicated steering adjustment mechanisms need to be designed, resulting in a complex structure and low transmission efficiency. Low cost and high cost, the present invention provides a vehicle headlight dimming driving device, which can set a dimming driving point at any place on the rear cover shell of the car lamp, and adjust the torque along the rear cover shell through the flexible transmission shaft. The curved surface transmits the torque to the dimming screw for dimming purpose

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