JPS6235201Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a headlamp of the type in which a reflector is movable within a case, and in particular to a vehicle headlamp with an improved aiming mechanism for adjusting the reflector.

In recent years, there has been a demand for headlights to not only fulfill their role as illuminating lights, but also to be larger and more square in shape in order to harmonize with the vehicle body. In order to satisfy this requirement, a conventional type of glass lamp, which has been commonly used in the past, is held between retaining rings and mounting rings, attached to a housing via an adjusting screw and a spring, and the housing is attached to the vehicle body. However, there are other problems, such as the headlights tending to protrude from the vehicle body when the initial aiming setting is set, and the headlights do not match the design of the vehicle body. For this reason, as described above, a type of headlamp has been developed in which only the reflector is movable within the case, and the case is attached to the vehicle body, grill, or the like.
With this type, only the reflector moves within the case, so the headlight does not protrude from the vehicle body due to the aiming setting, and the design can be made into a shape other than the traditional round shape. Therefore, it can be a desirable headlight.

However, this type of conventional headlamp has the following problems.

That is, in the case of this type of conventional headlight,
The adjusting screw of the aiming mechanism is located on the back of the case, so when adjusting aiming, for example, it is difficult to insert an adjustment tool (such as a screwdriver) or your hand into a narrow and deep place between the radiator, the car body, or the grill. There is a problem in that adjustment has to be made, and the workability of the adjustment is extremely poor.

In addition, the operating section of the aiming mechanism is disposed on the top surface of the case, and the adjusting section of the aiming mechanism is attached next to the reflector, so that when the operating section is operated, this is transmitted to the adjusting section and the reflector is displaced. has also been proposed (1977-
(Refer to Publication No. 124734) However, in this proposal, the relative angular position between the operating section and the adjusting section is specified within a narrow range, so the mounting position of the operating section may vary depending on the shape of the vehicle body or the parts attached to the vehicle body. It may not be possible to apply it if there are restrictions.

SUMMARY OF THE INVENTION An object of the present invention is to improve the problems of the prior art as described above, and particularly to provide a vehicle headlamp in which an operating section can be mounted at any desired position on the upper surface of the case.

Hereinafter, an example of the implementation of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, the vehicle headlamp of the present invention has a bulb (not shown) in a light chamber 3 defined by a case 1 and a lens 2 located in the front of the case 1. ) is disposed, and a reflector 4 is movably disposed within the lamp chamber 3, and this reflector 4
case 1 with three supporting parts 5a, 5b, 5c.
One point 5c constitutes a fulcrum part, and the other support parts are connected to the aiming mechanism. In the illustrated example, two supporting parts 5a, 5b are connected to aiming mechanisms 6a, 6b, one aiming mechanism 6a is directly attached to the reflector 4, and the other aiming mechanism 6b is attached to the swing mechanism 9.
It is attached to the reflector 4 via.

A more detailed description of the illustrated headlight is as follows.

First, the reflector 4 has three parts as shown in FIG.
It is attached to the case 1 by supporting parts 5a, 5b, and 5c at points, among which one supporting part 5c
is a stand 1 protruding from the case 1 as shown in FIG.
A hemispherical protrusion 41 formed on the flange portion of the reflector 4 is received on the seat 1, and is fixed with a screw 43 via a hemispherical washer 42. The hole in the reflector 4 is made sufficiently larger than the diameter of the screw 43 so that the reflector 4 can swing in this portion.

The other two supporting parts 5a and 5b are connected to aiming mechanisms 6a and 6b, and this aiming mechanism 6
a and 6b are attached to the upper surface of the case 1, as shown in FIGS. 1 and 2. One support part 5b
is located at the lower part of the reflector 4 as shown in FIG. As shown in FIG. 4, the support portion 5b is swingable by having the hemispherical protrusion 44 of the reflector 4 received by the swinging mechanism 9 and by passing the connecting screw 45 through a sufficiently large hole in the reflector 4. is connected to. As shown in FIG. 4, in the swinging mechanism 9, the intermediate portion of the lever 92 is pivoted on a bracket 91 attached to the case 1, so that the lever 92 can be tilted about this pivot support 93. One end is connected to the aiming mechanism 6b via a mounting screw 94.
It is threadedly connected to the adjusting section 8 of.

The support portion 5a is directly connected to the aiming mechanism 6a, and the adjustment portion 8 of the aiming mechanism 6a is screwed onto a mounting screw fixed to the reflector 4 to constitute the support portion 5a.

Aiming mechanism 6a (support part 5a) shown in FIG.
Since the aiming mechanism 6b shown in FIG. 4 (the one connected to the supporting part 5b) has the same structure, the aiming mechanism 6a will be explained. FIG. 5 shows an exploded perspective view of this aiming mechanism 6a.

The aiming mechanism 6a includes an operating section 7 and an adjusting section 8 that are substantially perpendicular to each other.The operating section 7 is provided with a first bevel gear 71, and the adjusting section is provided with a second bevel gear 81.
is provided. In this embodiment, the bevel gears 71 and 81 mesh with each other so as to transmit driving force in a direction perpendicular to each other. Both gears 71 and 81 are housed in a metal bracket 61 attached to the inner surface of the case 1 with screws or the like, and are held down by a pedestal 62 so that the teeth of both gears are securely connected. A coil spring 72 is interposed in the operation part 7, and a screw 82 is cut in the adjustment part 8. spring 7
2 is interposed between the bracket 61 and the case 1, and the screw 82 is inserted between the edge 4 of the reflector 4.
It is screwed into a mounting screw 48 which is attached and fixed to a square hole 47 made at 6.

With the above structure, by inserting a screwdriver or the like into the operation groove 73 provided at the end of the operation part 7 protruding from the top surface of the case 1 and rotating it, the reflector 4 can be tilted and the optical axis can be adjusted. Can be adjusted. That is, when rotated in the direction of arrow A in the figure, the adjustment part rotates in the direction of arrow B due to the meshing of the bevel gears 71 and 81, and the reflector 4 is rotated in the direction of arrow C due to the action of the screw 82 and the mounting screw 48. As a result, the reflector 4 tilts in the left-right direction and the optical axis changes. In the illustrated example, a valve is located at the hole 49 of the reflector 4,
Although the bulb itself does not move, the optical axis changes by displacing the reflector 4.

The same is true for the aiming mechanism 6b, and when it is operated as shown by arrow A in FIG. 4, the end of the lever 92 moves forward and backward as shown by arrow C'.
The swinging mechanism 9 tilts around the pivot portion 93, and the reflector 4 moves forward and backward in the support portion 5b as shown by arrow D', thereby tilting the reflector 4 in the front-rear direction and changing the optical axis.

FIG. 6 shows a modification of the aiming mechanism 6a.
This uses a plastic bracket as the bracket 61, and when storing the bevel gears 71 and 81 therein, in order to ensure the engagement of both gears 71 and 81, there is an operation at the end of the adjustment part 8. An auxiliary gear 81' that meshes with the gear 71 on the side of the section 7 is provided. This auxiliary gear 81' is designed to idle relative to the adjustment section 8 and does not interfere with the movement of the gear 81 that moves together with the adjustment section 8. In short, this auxiliary gear 81' prevents gear 71 from coming off when both gears 71 and 81 are assembled, and is the fifth gear.
It has the same effect as the pedestal 62 shown.

In the above embodiment, an example was explained in which the axes of the bevel gears 71 and 81 were made substantially orthogonal, but in the present invention, the operating section and the adjusting section are linked using a pair of bevel gears, so the adjusting section By tilting the axis of the bevel gear of the operating section in any desired direction with respect to the axis of the bevel gear of the case, the operating section can be disposed at any desired position on the upper surface of the case. That is, in the present invention, since the operating section and the adjusting section are linked by a pair of bevel gears, when the axis of the operating section is tilted in the left-right direction or the front-back direction, the inclination angle of both bevel gears must be adjusted. By setting an inclination angle corresponding to this, it is possible to maintain the meshing of both bevel gears, and this allows the operating part of the aiming mechanism to be placed at any desired position on the top of the case where it will not interfere with the vehicle body. can.

Further, the present invention provides both aiming mechanisms 6a,
6b is attached to the upper surface of the case, and one of the aiming mechanisms 6a has its adjustment part screwed into a mounting screw attached directly to the upper part of the reflector, and the other aiming mechanism 6b is swingable to the case. The reflector is linked with a support section located at the bottom of the reflector via a lever pivoted on the reflector.
Since the adjustment part is screwed into the mounting screw attached to the upper part of the lever, the vertical aiming mechanism and the horizontal aiming mechanism can be made common.

Furthermore, as described above, in the present invention, the operating section and the adjusting section are arranged such that the first bevel gear provided on the operating section and the second bevel gear provided on the adjusting section are housed in a bracket so that the meshing of both bevel gears is achieved. The bracket is disposed at any desired position on the upper side of the case, and the operating section is pivotally supported on the case to transmit the drive of the operating section to the adjusting section. Therefore, the aiming mechanism can be configured as one assembly, and the workability of assembling the aiming mechanism can be improved.

As mentioned above, the vehicle headlight of the present invention is
By positioning the operating section on the top surface of the case, aiming adjustment can be easily performed, and even if the axis of the operating section is inclined in any direction with respect to the axis of the adjusting section, the first bevel gear By maintaining the engaged state of the second bevel gear and the second bevel gear, the operation part can be placed at any position where it does not interfere with the vehicle body, etc. Furthermore, the vertical aiming mechanism and the horizontal aiming mechanism can be made common, The aiming mechanism is configured as one assembly, which has the effect of improving the workability of assembling the aiming mechanism.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, in which Fig. 1 is a partially cutaway perspective view, Fig. 2 is a front view with the lens removed, and Figs. 3 and 4 are respectively taken along the - line in Fig. 2. A cross-sectional view, a cross-sectional view taken along the line 2, and FIG. 5 are an exploded perspective view of the aiming mechanism. FIG. 6 is a perspective view showing a modification of the aiming mechanism. 1... Case, 2... Lens, 3... Light chamber, 4
...Reflector, 5a, 5b, 5c...Support part,
6a, 6b...Aiming mechanism, 7...Operation unit,
71...First bevel gear, 8...Adjustment section, 81...Second bevel gear, 82...Screw.

Claims (1)

[Scope of utility model registration request] A bulb is disposed within a lamp chamber defined by a case and a lens located on the front surface of the case, and a reflector is movably attached to the case within the lamp chamber by means of three support parts, one of which is In a vehicle headlamp, the point support part constitutes a fulcrum part, and the other support part communicates with an aiming mechanism,
The aiming mechanism includes an operating section attached to the case side and an adjustment section attached to the reflector side,
and the operating section and the adjusting section are provided in a first section provided in the operating section.
The bevel gear and the second bevel gear provided in the adjustment section are housed in a bracket to form an assembly in which meshing of both bevel gears is maintained, and two sets of brackets for the aiming mechanism are arranged on the upper surface of the case. One of the aiming mechanisms has an adjustment section screwed into a mounting screw attached directly to the top of the reflector, and the other aiming mechanism has an adjusting section screwed into a mounting screw mounted directly on the top of the reflector, and the other aiming mechanism has an adjustment section screwed onto a mounting screw attached to the bottom of the reflector via a lever pivotably supported in the case. At the same time, the adjustment part is screwed into the mounting screw attached to the upper part of the lever, and by operating the operating part, the first
and a vehicle headlamp, characterized in that the optical axis can be adjusted by displacing the reflector via the second bevel gear.