JPH11260115A - Light for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten holding strength of an adjusting mechanism and a pivot mechanism in a reflector capable of aiming-adjustment and to easily design and manufacture the reflector. SOLUTION: Adjusting screws 25, 26 are supported by a light body 1, and a reflector 3 is mounted with an adjusting plate 15 formed separately from it, further an adjusting nut 22 fitted with the adjusting screw 25 is supported by the adjusting plate 15. When stems for constituting the adjusting mechanism are formed being hollow or the adjusting mechanism is set in the narrow space within the lamp body 1, the reflector 3 and the adjusting plate 15 can be easily formed, and a hollow structure in the adjusting plate 15 is realized, thus holding strength of the adjusting mechanism can be heightened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp in which a reflector holding a light source is provided inside a lamp body and the reflector can be tilted to adjust the aiming of the lamp.

[0002]

2. Description of the Related Art In order to adjust the optical axis of a headlight used in a vehicle such as an automobile, a reflector provided in a lamp body is tilted up, down, left and right to adjust the optical axis of the reflector, so-called aiming adjustment. Is performed. In order to realize this aiming adjustment, a pivot mechanism for supporting the reflector at one position so as to be able to tilt up and down and left and right with respect to the lamp body is provided, and an up and down adjusting mechanism and a pivot mechanism are provided at an up and down position perpendicular to the pivot mechanism. The right and left adjusting mechanisms are provided at the left and right positions, and these adjusting mechanisms are adjusted from outside the lamp body to adjust the vertical and horizontal tilt angles of the reflector, thereby achieving the aiming adjustment.

By the way, the above-mentioned pivot mechanism, up and down,
To configure each of the left and right adjusting mechanisms, a ball receiver and a screw nut are integrally provided on the back of the reflector, and a ball pin and the adjusting nut fitted to the ball receiver are provided on the back of the lamp body. A structure for supporting the adjusting screw to be screwed is required. In this case, in the adjusting mechanism, the adjusting nut is screwed on the adjusting screw by the turning operation of the adjusting screw, but at this time, the tip of the adjusting screw does not interfere with the reflector. A stem for holding the adjusting nut is formed so as to protrude from the rear side of the reflector, and the adjusting nut is held at the tip of the stem. If it is difficult to arrange the pivot support near the back of the reflector due to the design requirements of the lamp body and the reflector, similarly, a stem protrudes from the back of the reflector to hold the ball receiver. Has formed.

Since the stem for supporting the adjusting nut and the ball receiver is usually formed integrally with the reflector by resin molding, the stem is thickened to increase the supporting strength of the adjusting nut and the ball receiver. When it is formed, "sink" occurs at the time of resin molding in the stem portion, a point-like concave portion is formed on the reflection surface of the reflector, and the appearance when the reflector is viewed from the front side is reduced, and the "sink" If the angle is remarkable, it affects the reflection characteristics of the reflector and causes glare light. Also, by forming the stem thick, it is difficult to reduce the weight of the reflector.

[0005]

For this reason, the stem has a hollow structure such as a box shape or a tubular shape, which alleviates the above-mentioned problem of the sink and reduces the weight of the reflector. To ensure mechanical strength. However, when the stem has a hollow structure, the mold for resin molding the reflector and the stem integrally has
A slider for molding the hollow portion of the stem is required, and the mold structure becomes complicated. As described above, one pivot mechanism and two adjusting mechanisms are required to achieve the aiming adjustment. Therefore, in order to form a total of three stems in a hollow structure, a slider is required. Therefore, the mold structure becomes extremely complicated. Further, in the parabolic reflector, the rear side is formed in a convex shape, and therefore, when the slider is disposed on the stem adjacent to the convex portion, the slider withdrawal direction is also restricted. As a result, mold design becomes extremely difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular lamp in which the holding strength of an adjusting mechanism and a pivot mechanism in a reflector capable of adjusting an aiming is increased, and the design and manufacture of the reflector are facilitated. .

[0007]

According to the present invention, there is provided a lamp body, a reflector provided in the lamp body, and a light source attached to the reflector, wherein the reflector is tilted with respect to the lamp body. In a vehicle lamp which is supported as possible, an adjusting plate formed separately is attached to the reflector, and the reflector is supported by the lamp body via the adjusting plate. For example, an adjusting screw is supported on the lamp body, an adjusting nut that is screwed to the adjusting screw is supported on the adjusting plate, and the adjusting plate is turned by rotating the adjusting screw. The attached reflector is tilted with respect to the lamp body. Further, a ball shaft is supported on one of the lamp body and the adjusting plate, and a ball receiver which is fitted on the ball shaft and forms a pivot mechanism is supported on the other, and the reflector is provided with the pivot mechanism. It is configured to be tiltable about a fulcrum.

In the present invention, even when the stem of the adjusting mechanism has a hollow structure, or when the adjusting mechanism is provided in a narrow area in the lamp body,
By using the adjusting plate formed separately, the reflector and the adjusting plate can be easily formed, and the hollow structure of the adjusting plate can be realized to increase the holding strength of the adjusting mechanism and the pivot mechanism. Become.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an embodiment in which the present invention is applied to a headlight of an automobile, and FIG. 2 is a partially exploded perspective view of the embodiment as viewed from the rear side. FIGS. 3 and 4 are AA in FIG.
It is a sectional view taken along line BB. In these figures, a lens 2 is sealed to the front opening of the lamp body 1 at the periphery thereof, and a lamp room is defined by the lamp body 1 and the lens 2. A reflector 3 molded of resin is provided in the lamp chamber, and is supported in the lamp body 1 by an adjusting mechanism and a pivot mechanism described later.
The reflector 3 has an inner surface formed as a reflection surface having a paraboloid of revolution, and a light bulb mounting hole 4 is opened in a central portion thereof, and a light bulb socket 6 supporting a light bulb 5 as a light source is detachable. Has been attached. The light bulb socket 6 can be attached to and detached from the reflector 3 through a light bulb socket insertion hole 7 opened on the back surface of the lamp body 1, and a rubber is provided between the light bulb socket 6 and the light bulb socket insertion hole 7. It goes without saying that the cap 8 is waterproofed.

As described above, the reflector 3 is supported on the lamp body 1 by one pivot mechanism 10 and two adjusting mechanisms 11 and 12 on its rear surface. The pivot mechanism 10 is disposed at a lower right position when the reflector 3 is viewed from the front, and a vertical adjusting mechanism 11 of the two adjusting mechanisms is disposed at a vertically upper position of the pivot mechanism 10. A left and right adjusting mechanism 12 is disposed at a position on the opposite side of the reflector 3 in the horizontal direction with respect to the pivot mechanism 10. And the reflector 3
Can be tilted up and down, left and right with the pivot mechanism 10 as a fulcrum, and the up and down adjusting mechanism 11
Is operated to adjust the optical axis in the vertical and vertical directions, and by operating the left and right adjusting mechanism 12, the optical axis is adjusted in the horizontal and left and right directions. These adjustments realize the aiming adjustment of the headlight. It is configured to:

In order to realize the pivot mechanism 10 and the upper, lower, left and right adjusting mechanisms 11 and 12, the reflector 3 is integrated with the reflector 3 at a position corresponding to the left and right adjusting mechanism 12. A stem 14 having a hollow structure is formed so as to protrude toward the rear direction,
One adjusting plate 15 is fixed to the reflector 3 by screws 16 at positions corresponding to the pivot mechanism 10 and the vertical adjusting mechanism 11. That is, the stem 14 is formed in a hollow rectangular tube shape with one side surface extending in the optical axis direction of the reflector 3 cut out, and the details are omitted. Are formed integrally with the reflector 3 by a mold having The adjusting plate 15 is formed separately from the reflector 3 by resin molding, and has a hollow cylindrical upper stem portion at an upper end and a lower end of an intermediate portion 17 having a flat plate formed stepwise. 18 and a lower stem portion 19 are formed, and are fixed to the plurality of bosses 20 projecting from the rear surface of the reflector 3 at the intermediate portion 17 by the screws 16. The upper stem portion 18 and the lower stem portion 19 of the adjusting plate 15 are oriented substantially perpendicularly to the surface of the intermediate portion 17, and each have a hollow rectangular cylindrical shape or a cylindrical shape from the base end to the tip end. Is formed. Therefore, the adjusting plate 15 can be easily molded with resin without using a slider.

A square hole 1 provided at the tip of the stem 14
The right and left adjusting nuts 21 formed into a bush structure by resin molding are fitted and fixed to 4a. Also, the upper stem 1 of the adjusting plate 15
A square hole 18a is provided in the distal end surface of the upper portion 8, and an upper and lower adjusting nut 22 similarly formed in a bush structure by resin molding is fitted and fixed. On the other hand, a round hole 19a is provided in the distal end surface of the lower stem portion 19 of the adjusting plate 15, and a columnar base portion 23b of a ball shaft 23 having a spherical distal end portion 23a formed by resin molding is fitted and fixed.

The reflector 3 is provided inside the lamp body 1. At a position corresponding to the pivot mechanism 10 on the inner surface on the back side of the lamp body 1, the inside of the reflector 3 has a spherical shape. The formed ball receiver 24 is integrally formed, and the ball shaft 23
The ball tip 2a is fitted with the spherical tip 23a.
The pivot mechanism 10 is constituted by the pivot mechanism 3 and the ball shaft 24, and the reflector 3 can be tilted up and down, left and right in any direction with the pivot mechanism 10 as a fulcrum. At a position corresponding to the upper and lower adjusting mechanism 11, an upper and lower adjusting screw 25 is rotatably supported while penetrating the rear wall of the lamp body 1. The upper and lower adjusting screw 25 includes a shaft rotating operation part 25a disposed outside the lamp body 1 and a screw part 25b disposed inside the lamp body 1.
Are screwed into the upper and lower adjusting nuts 22.
Similarly, at a position corresponding to the left and right adjusting mechanism 12, a left and right adjusting screw 26 is rotatably supported while penetrating the rear wall of the lamp body 1, and the left and right adjusting screw 26 is An axis turning operation part 26a is arranged outside the lamp body 1,
A screw portion 2 provided inside the lamp body 1;
6b is screwed to the left and right adjusting nut 21.

Therefore, in each of the upper and lower adjusting mechanisms 11 and 12, for example, by rotating the upper and lower adjusting screws 25 from outside the lamp body 1, the upper and lower screwing screws are engaged. The adjusting nut 22 is screwed forward and backward of the lamp,
The upper stem portion 18 of the adjusting plate 15 that fits and supports the upper and lower adjusting nuts 22 is also moved integrally. For this reason, the reflector 3 to which the adjusting plate 15 is fixed is attached to the pivot mechanism 1.
It is tilted vertically up and down around 0. By rotating the left and right adjusting screws 26 from outside the lamp body 1, the left and right adjusting nuts 2 are rotated.
1 is screwed in the front-rear direction of the lamp, and the stem 14 and the reflector 3 which fit and support the same are also moved integrally. For this reason, the reflector 3 is tilted horizontally and horizontally with the pivot mechanism 10 as a fulcrum.

As described above, in the lamp of this embodiment,
A stem 14 for fitting and fixing the right and left adjusting nuts 21 of the left and right adjusting mechanisms 12 of the upper and lower adjusting mechanisms 11 and 12 and the pivot mechanism 10 for performing the aiming adjustment is used.
The upper and lower adjusting mechanism 1
The upper stem 18 for fitting and fixing the upper and lower adjusting nuts 22 and the ball shaft 2 of the pivot mechanism 10
An adjusting plate 15 is integrally formed with a lower stem portion 19 for screwing and supporting the reflector 3, while being formed separately from the reflector 3 and fixed to the reflector 3 by screws 16. For this reason, in the resin molding of the reflector 3, the stem 14 of the left and right adjusting mechanism 12 may be integrally formed, and the number of sliders of a mold for molding the stem 14 can be reduced, and the molding itself can be easily performed. Can be. Further, the adjusting plate 15 can easily perform resin molding without using a slider, even if the upper and lower stem portions 18 and 19 have a hollow structure. This makes it easy to design and manufacture a reflector capable of adjusting the aiming.

FIG. 5 is a front view of a second embodiment of the present invention. This embodiment is an example in which the present invention is applied to a headlight in which a traveling beam lamp and a passing beam lamp are integrated.
FIG. 6 is a rear view of the reflector, and FIG. 7 is a sectional view taken along the line CC of FIG. In these figures, a lens 32 is sealed to the front opening of the lamp body 31 at the periphery thereof, and a lamp room is defined by the lamp body 31 and the lens 32.
A reflector 33 molded of resin is provided in the lamp chamber, and is supported in the lamp body 31 by an adjusting mechanism and a pivot mechanism described later. The reflector 31 is formed with two rotating paraboloidal reflecting surfaces 33A and 33B in order to form a passing beam lamp with a traveling beam lamp, and a bulb mounting hole is opened at a central portion of each reflecting surface. Light bulb 35A as a light source,
Light bulb sockets 36A and 36B supporting 35B are detachably attached.

As described above, the reflector 33 is supported on the lamp body by one pivot mechanism 40 and two adjusting mechanisms 41 and 42 as described above. The pivot mechanism 40 is disposed at a central upper position when the reflector 33 is viewed from the front, and an up / down adjusting mechanism 41 is disposed at a vertically lower position of the pivot mechanism 40, and the pivot mechanism 40 is horizontal with respect to the pivot mechanism 40. A left and right adjusting mechanism 42 is arranged at a right position in the direction. And the reflector 33
Can be tilted up and down, left and right with the pivot mechanism 40 as a fulcrum, and the up and down adjusting mechanism 41
By operating the reflector 33, the optical axis is adjusted vertically and vertically, and by operating the left and right adjusting mechanism 42, the optical axis of the reflector 33 is adjusted horizontally and left and right. It is configured such that aiming adjustment of the lamp is realized.

In order to realize the pivot mechanism 40 and the left and right adjusting mechanism 42, the reflector 33
A first stem 43 having a hollow structure and a second stem 44 having a rectangular tube shape having a hollow structure are formed integrally with the reflector 33 at the corresponding positions. The first stem 43 and the second stem 44 are connected to the reflector 3
3 is formed in a tubular shape opened toward the front surface, and although not clearly shown in the figure, a part of the upper surface thereof is cut away, so that when the reflector 33 is molded with resin, By using a slider that is pulled out above the reflector 33, the stems 43 and 44 can be formed. An adjusting plate 45 is fixed to the reflector 33 by screws 46 at a position corresponding to the vertical adjusting mechanism 41. The adjusting plate 45 is formed separately from the reflector 33 by resin molding, and a stem portion 47 formed in a hollow rectangular tube shape and a bracket portion 48 formed in a flat plate shape are integrally formed. And a boss 49 protruding from the back surface of the reflector 33 in the bracket portion 48.
Is fixed by the screw 46. Since the adjusting plate 45 is formed in a hollow rectangular tube shape in which the stem portion 47 is concave toward the cylinder axis direction, it is possible to easily perform resin molding without using a slider. I have.

A round hole 43a is provided in the distal end surface of the first stem 43, and a ball receiver 50 formed in a bush structure by resin molding is fitted and fixed. A square hole 44a is provided in the distal end surface of the second stem 44, and right and left adjusting nuts 51 formed in a bush structure by resin molding are fitted and fixed. A square hole 47a is provided in the tip end surface of the stem portion 47 of the adjusting plate 45, and an upper and lower adjusting nut 52 similarly formed in a bush structure by resin molding is fitted and fixed.

The reflector 33 is connected to the lamp body 3.
1, a screw portion 53 of a ball screw 53 having a spherical end portion 53a at a position corresponding to the pivot mechanism 40 on the inner surface on the back side of the lamp body 31.
b is screwed, and the tip 53 of the ball screw 53 is
a is a ball receiver 5 fitted and fixed to the first stem 43
0, the ball receiver 50 and the ball screw 53
Thus, the pivot mechanism 40 is constituted, and with the pivot mechanism 40 as a fulcrum, the reflector 33 can be tilted vertically and horizontally in any direction. Further, at a position corresponding to the left and right adjusting mechanism 41,
A left and right adjusting screw 54 is rotatably supported while penetrating the rear wall of the lamp body 31, and the screw portion is screwed to the left and right adjusting nut 51. Similarly, at a position corresponding to the upper and lower adjusting mechanism 42, an upper and lower adjusting screw 55 is rotatably supported while penetrating the rear wall of the lamp body 31, and the screw portion is connected to the upper and lower adjusting nut 52. Screwed.

In each of the upper, lower, left and right adjusting mechanisms having the above-described structure, the upper and lower adjusting screws 55 are pivoted from outside the lamp body 31 to rotate.
The upper and lower adjusting nuts 52 are screwed in the front-rear direction of the lamp, and the adjusting plate 45 that fits and supports the nut is also integrally moved. Therefore, the reflector 33 to which the adjusting plate 45 is fixed is
It is tilted vertically up and down with the pivot mechanism 40 as a fulcrum. By rotating the left and right adjusting screws 54, the left and right adjusting nuts 51 are screwed in the front-rear direction of the lamp, and the stem 44 and the reflector 33 that fit and support the nuts are integrally moved. Reference numeral 33 is tilted horizontally and horizontally with the pivot mechanism 40 as a fulcrum.

In the lamp of the second embodiment, of the upper and lower adjusting mechanisms 41 and 42 and the pivot mechanism 40 for performing the aiming adjustment, the second one for supporting the ball receiver 50 of the pivot mechanism 40. 1 stem 43
And a second stem 44 for fitting and fixing the left and right adjusting nuts 51 of the left and right adjusting mechanism 41 is formed integrally with the reflector 33, but the upper and lower adjusting nuts 52 of the upper and lower adjusting mechanism 42 are fitted. A stem portion 47 for fixing is formed as an adjusting plate 45 separately from the reflector 33, and is fixed to the reflector 33 by screws 46. For this reason, in the resin molding of the reflector 33, the first stem 43 and the second stem 44 provided above the reflector 33 may be integrally formed, and the slider of the die for molding the stem may be used as the reflector 33. It can be designed to be concentrated on the upper side of the and to pull out each slider upward,
A slider that is pulled downward is unnecessary, and the mold structure can be simplified. Further, the adjusting plate 45 described above can easily perform resin molding without using a slider, even if the stem portion 47 has a hollow structure. This makes it easy to design and manufacture a reflector capable of adjusting the aiming.

[0023]

As described above, the present invention relates to a vehicular lamp in which a reflector is supported so as to be tiltable with respect to the lamp body, wherein the reflector is provided with an adjusting plate formed separately from the reflector. Is attached,
Since it is configured to be supported by the lamp body via the adjusting plate, an adjusting mechanism or a pivot mechanism for performing aiming adjustment of the lamp is configured by using the adjusting plate, so that the adjusting mechanism is provided. The reflector and the adjusting plate can be easily formed even when the stem of the lamp has a hollow structure or an adjusting mechanism is arranged in a narrow area within the lamp body, and the adjusting plate is realized by implementing the hollow structure of the adjusting plate. It is possible to increase the holding strength of the mechanism and the pivot mechanism. In addition, a hollow cylindrical stem is formed on the adjusting plate, which supports an adjusting nut, ball shaft, or ball receiver to increase the strength of the stem and reduce the effect of stress on the reflector. As a result, it is possible to prevent the deformation of the reflector.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a partially exploded perspective view of the lamp of FIG. 1 as viewed from the rear side.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a sectional view taken along the line BB in FIG. 1;

FIG. 5 is a front view of a second embodiment of the present invention.

FIG. 6 is an exploded rear perspective view of a part of the reflector of the second embodiment.

FIG. 7 is a sectional view taken along the line CC in FIG. 5;

[Explanation of symbols]

 1,31 Lighting body 2,32 Lens 3,33 Reflector 10,40 Pivot mechanism 11,41 Vertical adjusting mechanism 12,42 Right and left adjusting mechanism 14 Stem 43,44 Stem 15,45 Adjusting plate 18,19,47 Stem Part 21, 22 Adjusting nut 23 Ball shaft 25, 26 Adjusting screw 50 Ball receiver 51, 52 Adjusting nut 53, 54 Adjusting screw

Claims (4)

[Claims] 1. A vehicle, comprising: a lamp body; a reflector provided in the lamp body; and a light source attached to the reflector, and supporting the reflector to be tiltable with respect to the lamp body. A lighting device for a vehicle, wherein an adjusting plate formed separately from the reflector is attached to the reflector, and the reflector is supported by the lamp body via the adjusting plate. 2. An adjusting screw is supported on the lamp body, an adjusting nut screwed on the adjusting screw is supported on the adjusting plate, and the adjusting screw is rotated by the rotating operation of the adjusting screw. The vehicular lamp according to claim 1, wherein the reflector to which the sting plate is attached is tilted with respect to the lamp body. 3. A ball shaft is supported on one of the lamp body and the adjusting plate, and a ball receiver which is fitted to the ball shaft and forms a pivot mechanism is supported on the other, and the reflector is The vehicle lighting device according to claim 1, wherein the vehicle lighting device is configured to be tiltable around a pivot mechanism. 4. The adjusting plate is provided with a hollow cylindrical stem portion, and the adjusting nut, a ball shaft, and a shaft are provided in a hole formed at a tip of the stem portion.
The vehicular lamp according to claim 2, wherein one of the ball receivers is supported.