JPH10119639A - Lighting fixture for vehicle with optical axis adjusting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a lighting fixture, accurately fix a heat resistant shade and reduce the numbers of parts and assembling processes. SOLUTION: A heat resistant shade 16 is fastened and fixed to a lamp housing 10 together with an optical axis adjusting device and/or a pivot bearing mechanism 14 by using mounting members (push-nuts 100 and waved washers 104) for the optical axis adjusting device and/or mounting members (screws 143 and flanges 144) for the pivot bearing mechanism 14. As a result, a whole lighting fixture can be miniaturized. The heat resistant shade 16 is accurately fixed thereto and the less numbers of parts and assembling processes are required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as a fog lamp for an automobile, and more particularly to a vehicular lamp provided with an optical axis adjusting device of a movable reflector type. The present invention relates to a vehicular lamp provided with an optical axis adjusting device that can be securely fixed and that can reduce the number of parts and the number of assembling steps.

[0002]

2. Description of the Related Art A vehicular lamp provided with this type of optical axis adjusting device will be described with reference to FIGS. This example describes a car fog light. It should be noted that hatching is omitted in the interpretation of the drawings. In the figure, reference numeral 10 denotes a lamp housing. A front lens 11 is disposed in a front opening of the lamp housing 10 with a sealant or an adhesive (for example, hot melt) or the like. A lamp chamber 12 is defined by the front lens 11 and the lamp housing 10. ing. A movable reflector 13 is provided in the light room 12.
The movable reflector 13 is attached to the lamp housing 10 by an optical axis adjusting device 17 and a pivot bearing mechanism 14 so as to be able to rotate and tilt at least. On the front side of the movable reflector 13, there is provided a reflection surface 18 for reflecting light from the light source bulb 15 to the front lens 11 side. Its movable reflector 13
A light source bulb 15 is detachably provided on the reflection surface 18 side of the light source 12, and the light source bulb 15 is disposed in the lamp room 12.

A mounting boss 101 is provided integrally with the lamp housing 10 outside the portion where the optical axis adjusting device 17 is provided, and a circular insertion hole 102 is provided at the center of the mounting boss 101. Have been. This insertion hole 1
In 02, an intermediate portion of the adjusting screw 103 is rotatably mounted by a push nut 100 and a wave washer 104, and is mounted so as not to move in the axial direction of the adjusting screw 103. Adjust screw 1
An O-ring 105 is provided on the outer surface of the mounting boss 101, and a screw at one end of the adjusting screw 103 is provided on the outer surface of the mounting boss 101. When the flange portion 107 near the other end is in contact with the portion 106, the watertightness between the lamp housing 10 and the adjusting screw 103 is maintained.

[0004] A mounting portion 130 is provided integrally with a portion of the rear surface of the movable reflector 13 where the optical axis adjusting device 17 is provided. A spherical concave surface 132 is provided at the tip of the mounting portion 130. A screw mounting 133 is mounted on the spherical concave surface 132 of the mounting portion 130 so as not to rotate and to be unable to move in the axial direction of the adjusting screw 103. This screw mounting 1
A screw portion 106 at one end of the adjusting screw 103 is screwed into the screw 33. In the drawing, reference numeral 109 denotes a stopper for adjusting the optical axis in the vertical direction.

[0005] The pivot bearing mechanism 14 comprises a pivot portion 140 and a bearing portion 141. Pivot 140
Consists of a spherical portion 142 at one end, a screw portion 143 at the other end, and an intermediate flange portion 144. The screw part 143 is screwed into a boss part 191 provided integrally with the rear part 190 of the lamp housing 10, and the flange part 144 is brought into contact with the inner wall surface of the rear part 190 of the lamp housing 10, so that the pivot part 140 is attached to the lamp housing 10. Can be On the other hand, the bearing portion 141 has a press-fit portion 145 at one end.
And a stopper 146 at the other end, and a spherical recess 147 inside. The press-fitting portion 145 is press-fitted into a mounting portion 131 provided integrally with the movable reflector 13, and the stopper portion 146 abuts against the mounting portion 131 of the movable reflector 13, whereby the bearing portion 141 is mounted on the movable reflector 13. The pivot portion 1 is provided in the spherical concave portion 147 of the bearing portion 141.
The pivot bearing mechanism 14 is formed by press-fitting the 40 ball portions 142.

In the lamp chamber 12, a heat-resistant shade 16 is provided along the inner wall surface of the side portion 192 of the lamp housing 10. The heat-resistant shade 16 has a shape covering the inner wall surface of the side portion 192 of the lamp housing 10,
The heat-resistant shade 16 is integrally provided with an L-shaped fixing portion 160. The fixing portion 160 is fixed to a boss portion 193 protruding from a rear portion of the lamp housing 10 by a screw 19. As a result, the above-described heat-resistant shade 16 is disposed along the inner wall surface of the side portion 192 of the lamp housing 10 with a gap provided between the heat-resistant shade 16 and the side portion 192 of the lamp housing 10 in the lamp chamber 12. The Rukoto. The heat-resistant shade 16 prevents the lamp housing 10 (particularly, the side portion 192) from being deformed by heat generated when the light source bulb 15 is turned on.

[0007] A tool 194 such as a + screwdriver is engaged with the double gear 108 via a guide 195 provided in the lamp housing 10, and the tool 194 is turned to operate the optical axis adjusting device 17. 13 and the light source bulb 15 rotate and tilt in the vertical direction.

[0008]

However, the vehicular lamp provided with the above-described optical axis adjusting device has the following problems since the heat-resistant shade 16 is fixed to the lamp housing 10 by the screw 19. That is, the fixing portion 160 of the heat-resistant shade 16 is
And the part where the optical axis adjusting device 17 and the pivot receiving shaft mechanism 14 are attached to the lamp housing 10 by attaching members (the push nut 100, the wave washer 104, the screw part 143, and the flange part 144). , Because it needs to be shifted,
The horizontal dimension (width direction) of the lamp becomes large. In addition, since the boss 193 for screwing the screw 19 for fixing the heat-resistant shade 16 to the lamp housing 1 is integrally protruded rearward from the rear of the lamp housing 10,
The size of the lamp in the front-rear direction becomes large. As a result, the size of the entire lamp increases.

Further, since the outer diameter of the head of the screw 19 for fixing the heat-resistant shade 16 to the lamp housing 10 is small, the heat-resistant shade 16 cannot be sufficiently fixed and the heat-resistant shade 16 is inclined. It may cause poor appearance and noise. Moreover, heat-resistant shade 1
6, a washer 196 is required as shown in FIG.

Further, a screw 19 (washer 1) for fixing the heat-resistant shade 16 to the lamp housing 10 is provided.
96) and the mounting members 100, 104, 143, 144 for mounting the optical axis adjusting device 17 and / or the pivot bearing mechanism 14 to the lamp housing 10 are separately required, so that the number of parts is large. Moreover, since the operation for fixing the heat-resistant shade 16 to the lamp housing 10 and the operation for attaching the optical axis adjusting device 17 and / or the pivot bearing mechanism 14 to the lamp housing 10 are performed separately, the number of assembly steps is reduced. Many.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular lamp having an optical axis adjusting device that can be reduced in size, can securely fix a heat-resistant shade, and can reduce the number of parts and the number of assembling steps.

[0012]

SUMMARY OF THE INVENTION A vehicle lamp provided with an optical axis adjusting device according to the present invention has the following objects.
The heat-resistant shade is fixed to the lamp housing together with the optical axis adjusting device and / or the pivot bearing mechanism by means of the mounting member of the optical axis adjusting device and / or the pivot bearing mechanism.

As a result, in the vehicular lamp provided with the optical axis adjusting device of the present invention, the portion for fixing the heat-resistant shade to the lamp housing and the optical axis adjusting device and / or the pivot receiving shaft mechanism are attached to the lamp housing by the attaching member. Since the same location can be used, the lateral dimension (width direction) of the lamp can be reduced. Moreover, since there is no need for a boss for screwing a screw for fixing the heat-resistant shade to the lamp housing as in the conventional case described above, the size of the lamp in the front-rear direction can be reduced. As a result, the size of the entire lamp can be reduced.

Also, since the heat-resistant shade is fixed to the lamp housing by the mounting member of the optical axis adjusting device and / or the mounting member of the pivot bearing mechanism, the heat-resistant shade can be securely fixed. The appearance is poor, and there is no danger of generating abnormal noise.

Further, since the mounting member for fixing the heat-resistant shade to the lamp housing and the mounting member for mounting the optical axis adjusting device and / or the pivot bearing mechanism to the lamp housing are also used, the number of parts can be reduced. . Moreover, since the operation for fixing the heat-resistant shade to the lamp housing and the operation for attaching the optical axis adjusting device and / or the pivot bearing mechanism to the lamp housing are performed simultaneously, the number of assembling steps can be reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicular lamp equipped with an optical axis adjusting device according to the present invention will be described below with reference to FIGS. This example describes a car fog light. In the drawing, the same reference numerals as those in FIGS. 4 to 7 denote the same components. It should be noted that hatching is omitted in the interpretation of the drawings.

A fixing portion 160 of the heat-resistant shade 16 is provided corresponding to a mounting position of the optical axis adjusting device 17 and the pivot bearing mechanism 14. This fixing part 160 is attached to the lamp housing 10.
On the inner wall surface of the rear part 190, together with the optical axis adjusting device 17 and the pivot bearing mechanism 14, a mounting member of the optical axis adjusting device 17 (push nut 100 or wave washer 104).
And a mounting member (screw portion 143) of the pivot receiving shaft mechanism 14.
And a flange portion 144) to fix and fasten together.

The vehicle lamp provided with the optical axis adjusting device according to the present invention in this embodiment has the above-described configuration, and can achieve the following effects. That is, the location where the fixing portion 160 of the heat-resistant shade 16 is fixed to the lamp housing 10, and the optical axis adjusting device 17 and the pivot receiving shaft mechanism 14 are attached to the mounting members (the push nut 100, the wave washer 104, the screw portion 143, and the flange portion 144).
Accordingly, the location at which the lamp is attached to the lamp housing 10 can be made the same, so that the lateral dimension (width direction) of the lamp can be reduced. Moreover, since the boss 193 for screwing the screw 19 for fixing the heat-resistant shade 16 to the lamp housing 10 as in the conventional case described above is not required, the size of the lamp in the front-rear direction can be reduced. As a result, the size of the entire lamp can be reduced.

The heat-resistant shade 16 is attached to the lamp housing 10 by attaching the optical axis adjusting device 17 (push nut 100 or wave washer 104) and attaching the pivot receiving shaft mechanism 14 (screw portion 143 and flange portion 14).
4), the heat-resistant shade 16 can be securely fixed, and the heat-resistant shade 16 is inclined,
The appearance is poor, and there is no danger of generating abnormal noise.

Further, a mounting member (push nut 1) for fixing the heat-resistant shade 16 to the lamp housing 10.
00, the wave washer 104, the screw portion 143, and the flange portion 144) and the mounting member (the push nut 100, the wave washer 104, the screw portion 143, and the flange) for mounting the optical axis adjusting device 17 and the pivot bearing mechanism 14 to the lamp housing 10. The part 144) is also used, so that the number of parts can be reduced. Moreover, the operation for fixing the heat-resistant shade 16 to the lamp housing 10, the optical axis adjusting device 17 and / or the pivot bearing mechanism 14
And the operation for attaching the to the lamp housing 10.
Since they are performed simultaneously, the number of assembling steps can be reduced.

In the above-described embodiment, the description has been given of the fog lamp of the automobile. However, the vehicular lamp equipped with the optical axis adjusting device of the present invention can be applied to other lamps such as a headlamp.

Further, in the above-described embodiment, a lamp equipped with only the optical axis adjusting device 17 for the vertical direction has been described. The present invention can also be applied to a lamp equipped with the optical axis adjusting device described above.

Further, in the above-described embodiment, the heat-resistant shade 16 covers the entire side portion 192 of the lamp housing 10. However, the vehicular lamp provided with the optical axis adjusting device of the present invention is not limited to the lamp. The present invention is also applicable to a lamp covering only the upper part of the side part 192 of the housing 10.

Further, in the above-described embodiment, the fixing portion 160 of the heat-resistant shade 16 is attached to the lamp housing 10 by the mounting member (the push nut 100 or the wave washer 104) of the optical axis adjusting device 17 and the pivot receiving shaft mechanism 14. Mounting member (screw 143 or flange 14
4), the vehicular lamp equipped with the optical axis adjusting device of the present invention is configured such that the fixing portion 160 of the heat-resistant shade 16 is attached to the lamp housing 10 by the mounting member of the optical axis adjusting device 17 (the push nut 100 or the like). Wave washer 1
04) alone, or to a lamp fixed only by the mounting member (the screw portion 143 or the flange portion 144) of the pivot receiving shaft mechanism 14.

[0025]

As described above, the vehicular lamp provided with the optical axis adjusting device of the present invention can be downsized, the heat-resistant shade can be securely fixed, and the number of parts and the number of assembling steps can be reduced. .

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a vehicular lamp equipped with an optical axis adjusting device of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged sectional view of a main part.

FIG. 4 is a front view showing a vehicle lamp equipped with a conventional optical axis adjusting device.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is an enlarged sectional view of a portion where the heat-resistant shade is fixed to the lamp housing.

FIG. 7 is a sectional view taken along line VII-VII in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Headlight for automobiles, 10 ... Lamp housing, 11 ...
Front lens, 12: light room, 13: movable reflector, 14
... Pivot mechanism, 140 ... Pivot part, 141 ... Bearing part, 143 ... Screw part, 144 ... Flange part, 15 ... Light source bulb, 16 ... Heat resistant shade, 160 ... Fixed part, 17 ...
Optical axis adjusting device, 18: reflection surface, 100: push nut, 101: mounting boss, 102: insertion hole, 103: adjusting screw, 104: wave washer, 1
05 O-ring, 106 screw part, 107 flange part, 108 double gear, 109 stopper, 130 ...
Mounting part, 131: mounting part, 132: concave spherical surface, 133: screw mounting.

Claims (1)

[Claims] 1. A lamp chamber is defined by a lamp housing and a lens, and a movable reflector is disposed in the lamp chamber. The movable reflector is provided on the lamp housing with an optical axis adjusting device and a pivot bearing mechanism. A movable light reflector is attached to the movable reflector, and a heat-resistant shade is arranged along the inner wall surface of the lamp housing in the lamp chamber. In the vehicular lamp provided with the optical axis adjusting device, the heat resistant shade is shared by the mounting member of the optical axis adjusting device and / or the pivot bearing mechanism together with the optical axis adjusting device and / or the pivot bearing mechanism. A vehicular lamp equipped with an optical axis adjusting device, wherein the vehicular lamp is fixed to the lamp housing by fastening.