JPS6231305U

JPS6231305U -

Info

Publication number: JPS6231305U
Application number: JP12022185U
Authority: JP
Priority date: 1985-08-07
Filing date: 1985-08-07
Publication date: 1987-02-25

Description

[Brief explanation of drawings]

第１図は本発明の光軸調整装置の一実施例を備
えた自動車用前照灯の垂直断面図である。第２図
乃至第４図は上記実施例のピニオンギヤの外観図
、第５図乃至第７図は同じくスリーブの外観図、
第８図は同じくピニオンギヤとスリーブとラツク
との斜視図である。第９図は前記実施例のラツク
及びその操作部材を抽出して示した外観図である
。第１０図は前記と異なる実施例の断面図である
。１…ランプハウジング、２…水平な枢支軸、５
…歯車室、７…ピニオンギヤ、７ａ〜７ｅ…螺旋
階段状のカム面、８…ラツクギヤ、９…スリーブ
、９ｃ…カムフオロワ面、９ｄ…雌ネジ孔、１０
…雄ネジ杆、１１…ブラケツト、１１ａ…二又部
、１２…操作杆、１３…操作レバー。 FIG. 1 is a vertical sectional view of an automobile headlamp equipped with an embodiment of the optical axis adjustment device of the present invention. FIGS. 2 to 4 are external views of the pinion gear of the above embodiment, and FIGS. 5 to 7 are external views of the sleeve.
FIG. 8 is a perspective view of the pinion gear, sleeve, and rack. FIG. 9 is an external view showing the rack of the embodiment and its operating members. FIG. 10 is a sectional view of an embodiment different from the above. 1...Lamp housing, 2...Horizontal pivot shaft, 5
... Gear chamber, 7... Pinion gear, 7a to 7e... Spiral stepped cam surface, 8... Rack gear, 9... Sleeve, 9c... Cam follower surface, 9d... Female screw hole, 10
...Male thread rod, 11...Bracket, 11a...Fork, 12...Operation rod, 13...Operation lever.

Claims

[Scope of utility model registration request]

At least one of the lamp housing and the reflector of the headlamp is rotatably supported by a horizontal axis, and the lamp housing or the reflector is provided with a rotation driving means to move the optical axis direction of the headlamp up and down. The adjusting device includes a gear chamber configured to be fixed to the vehicle body, a pinion gear housed in the gear chamber, a rack gear that meshes with the pinion gear and can be manually operated from outside the gear chamber, and a spiral staircase provided on an end surface of the pinion gear. a stepped cylindrical sleeve having a shaped cam surface and a spiral step-shaped cam follower surface that slides on and is pushed by the cam surface;
The sleeve has a male threaded rod that is screwed into the female thread provided on the inner surface of the sleeve, and when the rack gear is manually operated and the pinion gear is rotated, the cam surface provided on the pinion gear pushes the sleeve in the axial direction. A bracket configured to move and fixed to the lamp housing or the reflector is engaged with the male threaded rod to allow relative rotation around the axis and to prevent relative sliding in the axial direction. An optical axis adjustment device for an automobile headlamp, which is characterized by a fixed stop.