External dimming motor device for automotive headlamp

Abstract

The invention relates to an external dimming motor device for an automotive headlamp. A regulating mechanism comprises a dimming screw rod and a shaft sleeve connected with the dimming screw rod, wherein the shaft sleeve is supported in a bearing seat of a shell; a motor worm of a motor driving mechanism is arranged on an output shaft of a motor, two sides of a transmission shaft are respectively arranged on two shaft seats of the shell; a middle worm gear on the transmission shaft is meshed with the motor worm, a middle worm on the transmission shaft is meshed with a worm gear on a gear sleeve, and an inner hole of the gear sleeve is connected with the shaft sleeve through threads; and a circuit board arranged in the shell is electrically connected with the motor and is used for controlling the continuous operation of the motor, a rear cover is arranged at the rear part of the shell in a sealing mode, a manually regulating sleeve provided with bevel gears at the periphery or / and notches at the rear part is arranged on the rear cover in a sealing mode, and the manually regulating sleeve is connected with the rear part of the dimming screw rod. According to the device disclosed by the invention, dimming can be carried out by the motor or manually, the size and the weight of the whole device can bes reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to an external dimming motor device for an automobile headlamp, which belongs to the technical field of vehicle lighting. Background technique [0002] As the eyes of the car, the headlights of the car are not only related to the external image of the car, but also closely related to safe driving at night or in bad weather conditions. [0003] As an important functional part and appearance part of the car, the headlamp can meet the requirements of the lighting standard for the light type and irradiation direction of the headlamp. Under the influence of the load of the trunk, long-term vibration, high and low road conditions, etc., the headlights of automobiles will have a situation where the irradiation direction deviates from the standard direction. Therefore, it is necessary to adjust the irradiation direction of the headlights and restore the deviation direction of the headlights. to the standard direction, thereby improving t...

AI Technical Summary

Problems solved by technology

However, the current external dimming motor device is that the motor directly drives the dimming rod, and the axial dimension of the entire device is relatively long, resulting in a large and heavy device.

Furthermore, because the motor directly drives the dimming rod to move axially, especially for heavy-duty vehicles, the light pattern and irradiation direction are prone to shift after heavy load, so frequent dimming is required, which may easily cause damage to the motor and increase The cost

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