PES (Photoelectric Scanner) unit for vehicle headlamp and light screen assembly capable of controlling runout of light screen

Abstract

The invention discloses a PES (Photoelectric Scanner) unit for a vehicle headlamp and a light screen assembly capable of controlling runout of a light screen. The PES unit comprises a PES reflector (9), a lens and a bracket which are arranged together through bolts, wherein the light screen assembly comprises a fixed light screen (5), and a movable light screen (2) fixed on the fixed light screen (5) through a rivet (3) and a shaft (4); and the movable light screen (2) rotates around a transmission rotating shaft (4) of a pin (10) through an electromagnetic valve (6). The light screen assembly is characterized in that a clamper (11) for clamping the movable light screen (2) is arranged on the fixed light screen (5) in the light screen assembly, and the clamper is made of an elastic material. According to the invention, the clamper and the light screen form a linear contact for effectively limiting runout of the light screen, thus optical performance and reliability of the PES unit of the vehicle headlamp are improved, and conditions of passing light cutoff line color cast or dim of the PES unit of the vehicle headlamp during the running of vehicles and incapability of carrying out switching of the passing light and the distance light due to unsmooth switching of passing light and distance light are avoided.

Description

technical field [0001] The present invention relates to a car lamp device, in particular, the present invention relates to a visor assembly for controlling the movement of the visor of an automobile headlamp, and the visor assembly for controlling the movement of the visor of an automobile light is used in an automobile headlamp in the PES unit. Background technique [0002] With the modernization of highway traffic and the high-speed development of high density, the use of high-beam headlights is strictly limited on the highway. On the other hand, under the situation of most road traffics, the dipped beam headlight is still the driving light that the vehicle travels and actually uses in large quantities. Therefore, the improvement of the headlight basically focuses on the improvement of the performance of the low beam and the switching function of the low beam and the high beam of the headlight. For example, modified headlamp systems (PES, HNS, PD2) with complex geometrie...

AI Technical Summary

Problems solved by technology

[0006] However, the problem existing in the existing PES headlamp system is: the fixed visor in the PES unit is supported by the support base, and a certain gap is formed between the fixed visor and the support base. Due to the vibration of the vehicle, the shading The plate moves within this gap, and currently, the movement of the visor in the PES unit is difficult to control

[0014] As mentioned above, the problem existing in the existing design is that when the above-mentioned movable visor 2 is in the initial position, that is, when the headlight is in the low beam function, the PES unit will be damaged due to the undulation of the road because the lamp is installed on the running vehicle. Vibrate with the vehicle

[0016] 1: Since the support base 1 is fixed on the fixed visor 5 by spot welding, during mass production, the fixed position will be shifted greatly, and the support base 1 will cause secondary deformation during clamping. Affect the amount of clearance

[0017] 2: The bending angle of the support seat 1 needs to be controlled with high precision, which is difficult to achieve in the current process and actual mass production

The actual situation is that either the gap is too small, so that the switching between far and near light is not smooth, and the movable visor 2 is "stuck" by the support seat 1 and cannot be switched inside; or the gap is too large, which is caused by This causes the movable visor 2 to vibrate severely, thereby causing damage to optical functions and requirements, for example, resulting in blurring of the optical low beam cut-off line or color cast of the cut-off line

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