JP2000100234A - Vehicular lamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lamp device applicable to a vehicle body having a structure into which a screw driver can not be inserted from a position right above it. SOLUTION: An internally toothed gear 10 having slant teeth 11 opened toward a front side is fixed at a base end of a screw part 9 located outside a housing 2, a cross tooth 16 of a screw driver 15 inserted slantingly downward from the upper side of the housing 2 is directly engaged with the slant teeth 11, and then, the internally toothed gear 10 can be turned by the screw driver 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp device for a vehicle, and more particularly to a lamp device for a vehicle in which the optical axis of a reflector can be easily adjusted.

[0002]

2. Description of the Related Art Various lamp devices are provided in a front portion and a rear portion of an automobile. This type of lamp device is
A reflector that is rotatable about a fulcrum is provided in a housing having an outer lens on the front surface side. A rotatable screw portion is provided in a substantially horizontal penetrating state on an upper portion of a rear wall of the housing. The tip of the screw portion located in the housing is screwed into a nut portion formed on the back surface side of the reflector, and by rotating the screw portion, the reflector is rotated to adjust the optical axis of the reflected light. (As a similar technique, Japanese Utility Model Laid-Open No. 6-9001,
See JP-A-6-45202).

As a structure for rotating the screw portion, a bevel gear is fixed to the base end of the screw portion located outside the housing, and the bevel gear is inserted vertically downward from directly above the housing into the bevel gear. By engaging the plus teeth of the driver and rotating the driver, the bevel gear is rotated to rotate the screw portion.

[0004]

However, in such a conventional technique, a screwdriver is inserted into the bevel gear from the top of the housing and inserted vertically downward to engage the screw with the bevel gear. Since the structure is such that the part is rotated, it cannot be applied to a vehicle body having a structure in which the driver cannot be inserted from directly above.

The present invention has been made in view of such prior art, and provides a vehicle lamp device applicable to a vehicle body having a structure in which a driver cannot be inserted vertically from directly above. .

[0006]

According to the first aspect of the present invention,
In a housing having an outer lens on the front side, a reflector is rotatably supported around a fulcrum, and a rotatable screw portion is provided in a substantially horizontal penetrating state on an upper part of a back wall of the housing,
A vehicular lamp that adjusts the optical axis of reflected light by rotating the reflector by turning the screw portion by screwing the tip of a screw portion located in the housing to a nut portion formed on the back side of the reflector, and rotating the screw portion An apparatus, wherein an internal gear having inclined teeth opened toward the surface side is fixed to a base end of a screw portion located outside the housing, and a plus tooth of a driver inserted obliquely downward from the upper side of the housing. The internal gear is rotatable by the driver by directly engaging with the inclined teeth.

According to the first aspect of the present invention, since the screw portion can be rotated by the driver inserted obliquely downward from the upper side of the housing, the invention is also applied to a vehicle body having a structure in which the driver cannot be inserted vertically from directly above. Possible,
Further, the rotation operation of the driver is easier than in the conventional case where the driver rotates in a vertical state.

According to the second aspect of the present invention, a cylindrical portion is formed inside the inclined tooth of the internal gear, and a groove is formed between the inclined tooth and the cylindrical portion so that the tip of the plus tooth of the driver abuts. Things.

According to the second aspect of the present invention, since the groove for contacting the tip of the plus tooth of the driver is formed, the driver can be rotated with the tip of the plus tooth as a fulcrum, and the rotation of the driver Work becomes easier.

According to a third aspect of the present invention, a ball-shaped nut portion is slidably held on a pedestal formed on the back side of the reflector.

According to the third aspect of the present invention, since the ball-shaped nut portion is slidably held on the pedestal formed on the back side of the reflector, even if there is an assembly error between the reflector and the housing, Can be securely screwed into the nut part without difficulty.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a lamp device as a headlamp, and the lamp device 1 is installed at a front portion of an automobile. An outer lens 3 is provided on a front surface of a housing 2 of the lamp device 1.
Inside, a reflector 4 supported rotatably in a vertical direction about a lower fulcrum P is provided. Reflector 4
A valve 6 fixed to the back wall 5 of the housing 2 is provided at a central portion of the reflector 2. Light from the bulb 6 is reflected by the inner surface of the reflector 4 in a predetermined optical axis S direction. I have. The adjustment of the vertical direction of the optical axis S is performed by rotating the reflector 4 about the fulcrum P.

In order to rotate the reflector 4 in the vertical direction, a pedestal 7 is integrally formed on the upper surface of the back surface of the reflector 4, and a ball-shaped nut 8 is slidably held on the pedestal 7. In addition, a rotatable screw portion 9 is provided in an upper portion of the back wall 5 of the housing 2 so as to extend horizontally therethrough. Then, the screw portion 9 located in the housing 2
Is screwed into the nut portion 8. Therefore, by rotating the screw portion 9 in the forward and reverse directions, the upper part of the reflector 4 can be moved toward and away from the housing 2, and the reflector 2 can be rotated in the vertical direction. Since the nut portion 8 is in a ball shape slidably held on the pedestal 7, even if there is an assembly error between the reflector 4 and the housing 2, the screw portion 9 of the housing 2 is connected to the nut portion 8.
Can be securely screwed into the device.

An internal gear 10 for rotating the screw portion 9 is fixed to a base end of the screw portion 9 located outside the housing 2. The internal gear 10 has inclined teeth 11 opened toward the front side, and a cylindrical portion 12 is formed inside the inclined teeth 11, and between the cylindrical portion 12 and the inclined teeth 11. A groove 13 is formed.

With the inclined teeth 11 of the internal gear 10, the engine hood 14 is opened upward, and the plus teeth 16 of the driver 15 inserted obliquely downward from above the housing 2 can be engaged. With the plus tooth 16 engaged with the inclined tooth 11, the tip 16a of the plus tooth 16
Abuts on the groove portion 13, the driver 15 is rotated around the tip 16 a as a center fulcrum, whereby the internal gear 1 is rotated.
0 can be rotated. When the plus tooth 16 is engaged with the inclined tooth 11, a predetermined gap d (see FIG. 3) is formed between the lower side of the plus tooth 16 and the cylindrical portion 12. Does not hinder the rotation of the driver 15.

As described above, according to this embodiment, the driver 1 inserted obliquely downward from the upper side of the housing 2.
5, the internal gear 10 (screw portion 9) can be rotated, so that the present invention can be applied to a vehicle body having a structure in which the driver 15 cannot be inserted vertically from directly above. Further, since the driver 15 can work from the front of the vehicle body and in a state where the driver 15 is tilted more than before, the rotation work by the driver 15 becomes easy. Further, since the driver 15 can be rotated with the tip 16a of the plus tooth 16 abutting on the groove 13 of the internal gear 10 as a fulcrum, the driver 15
Rotation work is stable.

In the above embodiment, the headlamp installed at the front portion of the vehicle body is described as the lamp device 1. However, the present invention is not limited to this, and other lamp devices may be used. Lamp device may be used.

[0018]

According to the first aspect of the present invention, the screw portion can be rotated by the driver inserted obliquely downward from above the housing, so that the driver cannot be inserted vertically from directly above the housing. Is also applicable, and the rotation operation of the driver is easier than in the conventional case where the driver rotates in a vertical state.

According to the second aspect of the present invention, since the groove for contacting the tip of the plus tooth of the driver is formed, the driver can be rotated with the tip of the plus tooth as a fulcrum, and the rotation of the driver Work becomes easier.

According to the third aspect of the present invention, since the ball-shaped nut portion is slidably held on the pedestal formed on the back side of the reflector, even if there is an assembly error between the reflector and the housing, Can be securely screwed into the nut part without difficulty.

[Brief description of the drawings]

FIG. 1 is a front view of a lamp device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line SA-SA shown in FIG.

FIG. 3 is an enlarged sectional view of the internal gear.

FIG. 4 is an enlarged front view of the internal gear.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp device 2 Housing 3 Outer lens 4 Reflector 5 Back wall 6 Valve 7 Pedestal 8 Nut part 9 Screw part 10 Internal gear 11 Slant tooth 12 Cylindrical part 13 Groove part 14 Engine hood 15 Driver 16 Plus tooth 16a Tip P fulcrum S Optical axis d Gap

Claims (3)

[Claims] 1. A reflector which is rotatably supported around a fulcrum in a housing having an outer lens on a front surface side.
A rotatable screw portion is provided in the upper part of the back wall of the housing in a substantially horizontal penetrating state, and the tip of the screw portion located in the housing is screwed into a nut portion formed on the back side of the reflector, and the screw portion is rotated. A vehicle lamp device that adjusts an optical axis of reflected light by rotating a reflector, wherein a base end of a screw portion located outside the housing has an inclined tooth opening toward a surface side. A vehicular lamp device wherein a tooth gear is fixed, and a plus tooth of a driver inserted obliquely downward from an upper side of a housing is directly engaged with the inclined tooth, whereby the internal gear can be rotated by the driver. 2. The vehicle lamp device according to claim 1, wherein a cylindrical portion is formed inside the inclined tooth of the internal gear, and a tip of a plus tooth of a driver is provided between the inclined tooth and the cylindrical portion. A lamp device for a vehicle, wherein a groove portion to be contacted is formed. 3. The vehicle lamp device according to claim 1, wherein a ball-shaped nut portion is slidably held on a pedestal formed on the back side of the reflector. Lamp device.