JPS61158530U

JPS61158530U -

Info

Publication number: JPS61158530U
Application number: JP4238785U
Authority: JP
Priority date: 1985-03-26
Filing date: 1985-03-26
Publication date: 1986-10-01

Description

[Brief explanation of the drawing]

添付図は本考案の一実施例を説明するための図
であつて、第１図は前照灯の光軸調整装置の回路
構成図、第２図は第１図の回路動作を説明するた
めのタイムチヤートである。１，２……エンコーダ、３……ＧＣ−２進デコ
ーダ、４……減算器、５……２進−１０進デコー
ダ、６……モータ駆動回路、７……逆流防止ダイ
オード、８……光軸検出スイツチ、９，１４……
モーター，１０，１５……光軸駆動装置、１１，
１６……前照灯、１７……作動制限回路。 The attached drawings are diagrams for explaining one embodiment of the present invention, in which Fig. 1 is a circuit diagram of a headlamp optical axis adjustment device, and Fig. 2 is a diagram for explaining the circuit operation of Fig. 1. This is a time chart. 1, 2... Encoder, 3... GC-binary decoder, 4... Subtractor, 5... Binary-decimal decoder, 6... Motor drive circuit, 7... Backflow prevention diode, 8... Light Axis detection switch, 9, 14...
Motor, 10, 15... Optical axis drive device, 11,
16... Headlight, 17... Operation restriction circuit.

Claims

[Scope of utility model registration request]

a vehicle body tilt detector installed at the front and rear of the vehicle body that detects and outputs a gray code signal according to the vehicle body tilt;
a Gray code-binary decoder circuit that converts the Gray code signal from the detector into a binary number; a subtracter that subtracts the signal detected by the vehicle body tilt detector and decoded; A binary-decimal decoder circuit that converts into a base number, an optical axis drive device that changes the optical axis direction of the headlight by rotating the motor, and multiple contacts that sequentially switch in response to changes in the optical axis direction. an optical axis detection switch configured as such, and a motor drive circuit that rotates the motor in the forward or reverse direction based on the position of the optical axis detection switch and the output signal of the binary-decimal decoder;
An optical axis adjustment device for a headlamp, which comprises an operation limiting circuit configured to drive and control a motor drive circuit only when the output signal of the vehicle body tilt detector changes and remains in a stable state for a certain period of time.