JPH09301053A - Vehicular headlamp aiming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the quality in appearance of a headlamp by making its optical axis adjusting parts inconspicuous and permit the adjustment of its optical axis laterally and vertically by turning single screws respectively. SOLUTION: An aiming device has, on the upper part of a headlamp unit 10, a fulcrum 12 at the left-hand end in the lateral direction and a tightened part 14 for lateral optical axis adjustment at the right-hand end, and on the lower part of the headlamp unit a tightened part 16 for vertical optical axis adjustment at the same side as the fulcrum 12. The tightened part 14 for lateral optical axis adjustment has a screw 14a for adjusting the positional relation between the headlamp unit 10 and a headlamp housing 18, which is located in a space part 30 between the headlamp unit 10 and the headlamp housing 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlamp aiming device for adjusting an optical axis of a vehicle headlamp device.

[0002]

2. Description of the Related Art In a vehicle such as a motorcycle, an aiming device is provided in order to adjust a direction of an irradiation light beam of a headlamp (headlamp device), that is, an optical axis to a direction defined by a regulation or the like. For example, as shown in FIG. 7 ((a) is a front view, (b) is a sectional view) and FIG. 8 (side view), the headlamp forms an outer peripheral portion and the front surface has an opening a.
In the headlamp housing a, the lens b
1, a headlamp unit b including a reflecting mirror b2, a bulb b3, etc. is fitted and mounted in the opening a1.

The aiming device provided in this headlamp device is provided with a fulcrum c for pivotally attaching the unit b to the housing a on the upper right side of the headlamp device in a front view. A left and right optical axis adjusting part d is provided on the upper left part of the lamp device. The right and left optical axis adjusting portion d has a hole formed in the surface of the rim a2 of the housing a, the bracket f is fixed to the back surface of the edge of the lamp unit b, and the welding nut f1 is welded to the tip of the bracket f. To do. And
A screw (screw) d1 is passed through the hole of the housing a, a screw d1 is passed through a spring, and further screwed into the welding nut f1. The left and right optical axis adjusting section d adjusts the distance between the unit b and the housing a by rotating the screw d1. In addition, on the lower right side of the lamp device, the unit b having the same structure as the left and right optical axis adjusting parts d is provided.
A vertical optical axis adjusting section e for adjusting the distance between the housing and the housing a is provided. Screws d1 and e1 of each adjusting part d and e
Has a screw head exposed on the front surface so that the head lamp device can be adjusted from the front surface.

When the optical axis is adjusted by the above aiming device, the left and right optical axes are adjusted by rotating the screw d1 with a tool such as a screwdriver so that the fulcrum c and the vertical optical axis adjusting portion e are moved. Is used as the central axis of rotation m1 to change the distance between the headlamp unit b and the left side portion of the headlamp housing a, and the lens b1 surface is swung in the left-right direction to adjust the optical axis. The upper and lower optical axes are adjusted by the screw e.
1 is rotated by a tool such as a screwdriver to change the distance between the headlamp unit b and the lower part of the headlamp housing a with the fulcrum c and the left and right optical axis adjusting portions d as the rotation center axis m2. The optical axis is adjusted by tilting the surface of the lens b1 up and down. Incidentally, for example, Japanese Utility Model Publication No. 63-9498 is provided with an adjusting mechanism similar to the above in a two-lamp type headlight device.

[0005]

However, in the conventional headlamp device, as shown in FIG. 8, the screws d and e of the aiming device are exposed to the outside as shown in FIG. There has been a demand to make the screw attachment unnoticeable in order to improve the appearance quality.
Therefore, it is conceivable to move the left and right optical axis adjusting parts d located on the upper part to the lower left part of the headlamp device, as shown in FIG. 9, whereby when the headlamp device is viewed from above, The screw d1 is hidden behind the lens b1 and becomes inconspicuous.

However, with this arrangement, the left and right optical axes can be adjusted with the screw d1 around the axis n1 in FIG. 9 as the central axis, but only the screw e1 is turned to adjust the upper and lower optical axes. Therefore, since it rotates obliquely about the central axis n2, the screw d1
Need to turn. Further, in the above lamp device, the screw d1 is exposed to the lower left portion, and there is a problem that it is conspicuous when viewed from the front.

The present invention has been made to solve the above-mentioned problems of the prior art. The appearance quality of the headlamp can be improved by making the optical axis adjusting portion inconspicuous, and the left and right optical axis adjustments and the upper and lower optical axes can be adjusted. It is an object of the present invention to provide a headlamp aiming device for a vehicle, in which axis adjustment can be performed by turning one screw each.

[0008]

The present invention has the following constitution in order to solve the above problems. According to a first aspect of the present invention, there is provided a vehicle headlamp device in which a headlamp unit is mounted on a headlamp housing so that an optical axis can be adjusted by a fulcrum, a left and right optical axis adjusting fastening portion, and a vertical optical axis adjusting fastening portion. In the aiming device, a fulcrum is provided at one end in the left-right direction on the upper part of the headlamp device, a left and right optical axis adjusting fastening part is provided at the other end of the upper part, and the fulcrum is provided at the lower part of the headlamp device. A vertical optical axis adjustment fastening portion is provided on a side portion, and a screw for adjusting a positional relationship between the headlamp unit and the headlamp housing is provided on the left and right optical axis adjustment fastening portions. In addition to being located in the space between them, a tool insertion hole is formed in the rear end of the headlamp housing for inserting a tool toward the screw head and enabling the screw head to be operated by the tool. It is a vehicle headlamp aiming device according to claim is.

According to a second aspect of the present invention, the left and right optical axis adjusting fastening portions are integrally provided with a guide member for guiding the head of the tool to the screw head when the tool is inserted. The headlamp aiming device for a vehicle according to claim 1.

According to the third aspect of the present invention, the left and right optical axis adjusting fastening portions are detachably provided with a guide member for guiding the head of the tool to the screw head when the tool is inserted. The headlamp aiming device for a vehicle according to claim 1, wherein:

Therefore, according to the first aspect of the invention, in the vehicle headlamp aiming device, as shown in, for example, FIGS. 2 and 3, one end portion in the left-right direction (the left side in the drawing) is provided on the upper portion of the headlamp device. A fulcrum 12 is provided on the upper side, and a left and right optical axis adjusting fastening portion 14 is provided on the other end (right side in the figure) of the upper part, and a lower part of the headlamp device is provided on the same side as the fulcrum 12 for adjusting the vertical optical axis. A fastening portion 16 is provided. Therefore,
When adjusting the left and right optical axes of the headlamp 10, it suffices to tighten the left and right optical axis adjusting fastening portions 14, and
Since it suffices to tighten the vertical optical axis adjustment fastening portion 16, the optical axis can be adjusted with a single screw.
It is possible to eliminate the complexity of turning two screws for adjusting the vertical optical axis as in the aiming device shown in FIG.

In the left and right optical axis adjusting fastening portions 14, a screw 14a for adjusting the positional relationship between the headlamp unit 10 and the headlamp housing 18 is provided in a space between the headlamp housing 10 and the headlamp unit 10. Since the headlamp device is located at 30, the left and right optical axis adjusting screws 14a that are conspicuous in appearance are housed in the housing 18 so that the screw 14a cannot be seen even when the headlamp device is viewed from the front. Can be improved.

When adjusting the left and right optical axes, a tool 38 is inserted through a tool insertion hole at the rear end of the headlamp housing 18, and the tool 38 is directed toward the head of the screw 14a. Since the screw 14a head can be operated with,
Even if the screw 14a is housed in the headlamp housing 38, the optical axis can be adjusted reliably.

Further, as in the invention of claim 2 or claim 3, the left and right optical axis adjusting fastening portions are provided with guide members for guiding the head of the tool to the screw head when the tool is inserted. The tool inserted from the insertion hole can be easily guided to the screw head, and the adjustment work can be speeded up.

Further, the guide member is, as in claim 2,
If it is formed integrally with the fastening portion, it is easy to assemble. If the guide member is provided separately from the screw, the standard member can be used for the screw and the guide member of the separate member can be used as a washer.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 6 are explanatory views of a vehicle headlamp aiming device according to an embodiment of the present invention, FIG. 1 is a side view of a main part of a motorcycle, FIG. 2 is an explanatory view of a headlamp, and FIG. 3 is an optical axis adjustment. Explanatory drawing, FIG. 4 is an explanatory view of tool insertion in an example of a left and right optical axis adjusting fastening portion, and FIG. 5 is an explanatory view of tool loading in another example of a left and right optical axis adjusting fastening portion 14, 6 is an explanatory diagram of a tool insertion state centering around the steering head.

As shown in FIG. 1, in the motorcycle, a front pipe 22 is rotatably provided on a head pipe 20a at a front end portion of a main frame 20, and a front wheel 24 is rotated at a lower end portion of the front hawk 22. A steering handle 26 is fixed to the upper end of the steering handle 26. The front fork 22 is connected to the head pipe 20a by an upper bracket 28a and an under bracket 28b. The head lamp device 1 is fixed to the under bracket 28b in front of the brackets 28a, 28b. A fuel tank 19 is provided above the main frame 20 adjacent to the head pipe 20a.

The headlamp device 1 has a headlamp housing 18 on the outer side, which has a shell-like shape narrowed backward and has a hollow interior and an opening 18a at the front end. A headlamp unit 10 including a lens 10a, a reflecting mirror 10b, a bulb (light bulb) 10c, and the like is mounted therein by fitting the lens 10a into the opening 18a.

In the headlamp device 1, the headlamp unit 10 includes a fulcrum 12 and left and right optical axis adjusting fastening portions 14.
There is provided an aiming device capable of adjusting the optical axis by the upper and lower optical axis adjusting fastening portions 16.

In this aiming device, a fulcrum 12 is provided at an upper right end of the headlamp unit 10 in the left-right direction, and a left-right optical axis adjusting fastening portion 14 is provided at a left end of the upper part.
The headlamp unit 10 is provided with a vertical optical axis adjusting fastening portion 16 on the same side as the fulcrum 12 at the bottom thereof.

In the left and right optical axis adjusting fastening portion 14, a screw (screw) 14 a for adjusting the positional relationship between the headlamp unit 10 and the headlamp housing 18 is provided between the headlamp housing 18 and the headlamp unit 10. Located in the space 30.

Specifically, the rim 32 is integrally fixed to the housing 18 so as to surround the front end opening 18a of the headlamp housing 18. A lens 10a is fitted on the front surface of the reflecting mirror 10b of the lamp unit 10.

As shown in FIG. 2, in the left and right optical axis adjusting fastening portions 14, the first bracket 14b extends backward and is fixed to the rear surface of the front portion of the reflecting mirror 10a where the lens 10a is fitted. The rear end of the bracket 14b is bent outward, and a screw hole is aligned with the central hole 14b2 of the bent portion 14b1 to form a nut (welding nut or the like).
34 are fixed. In addition, the lamp housing 1
The second bracket 14c extends rearward and is fixed to the inner peripheral surface of the rim 32 of No. 8, and the rear end portion of the bracket 14c is bent inward, and the central hole 14 of the bent portion 14c1.
A bowl-shaped or petal-shaped guide portion 36 is integrally formed so as to surround c2. The rear end portion of the second bracket 14c is located rearward of the rear end portion of the first bracket 14b, the screw 14a passes through the center hole of the bent portion of the second bracket 14c, and the screw 14a passes through the spring 14d. In the mounted state, it is screwed onto the nut 34 fixed to the first bracket 14b.

The rear end portion 18 of the headlamp housing 18
Into b, a tool 38 such as a screwdriver or a dedicated tool is inserted toward the head 14a1 of the screw 14a and the tool 38 is inserted.
Tool insertion hole 18 for enabling the screw head 14a1 to be operated by
c is drilled. The forming position of the tool insertion hole 18c is
At the rear end of the headlamp housing 18, more specifically, when the front fork 22 is facing forward, the tool 38 cannot be inserted while being hidden by the head pipe 20a and the fuel tank 19, but the tool 38 cannot be inserted when the vehicle is stopped. In order to insert the tool, the tool insertion hole 18c is directed to the screw head 14a1 straightly without being disturbed by the head pipe 20c or the fuel tank while the front fork 22 is turned to one side and the rudder is turned off. Is formed at the position where When the tool insertion hole 18c is not used, a blind cover made of resin (not shown) is fitted to prevent water and mud from entering the headlamp housing 18.

When the tool 38 is inserted into the left and right optical axis adjusting fastening portions 14, the head of the tool 38 is screwed into the screw head 1.
Although the guide portion 36 leading to 4a1 is provided integrally with the second bracket 14c, the present invention is not limited to this. For example, as shown in FIG. 5, the first bracket 1
The rear end of the second bracket 14c is located rearward of the rear end of the second bracket 14c, and the guide portion 36 is provided separately from the bending portion 14b1 of the first bracket 14b (the guide washer is also used as the washer of the screw 14a). ) It may be detachably provided. In this case, the nut 34 is fixed to the bent portion 14c1 at the rear end of the second bracket 14c by welding or the like, and the nut 14a from the first bracket 14b is screwed to the nut 34 through the spring 14d.

The upper and lower rear axis adjusting fastening portions 16 are, as in the conventional one shown in FIG. 7, a bracket 16a on the back surface of the reflecting mirror of the headlamp unit 10 as shown in FIG.
Are extended and attached to the rear, and the screw 16b is inserted from a hole opened in the rim 32 of the headlamp housing 18 and screwed to the welding nut 16a1 at the rear end of the bracket 16a with the spring 16c interposed.

In the aiming device of the embodiment,
The left and right optical axes of the headlamp device 1 are adjusted as shown in FIGS. 3 to 6 by first cutting the handle 26 to the right as close as possible and then removing the blind cover of the tool insertion opening 18c and then inserting the insertion opening. The tool 38 is inserted into 18c. Then, the tool 38 is advanced, the tip of the tool 38 is applied to the screw head 14a1, and the screw 14 is rotated. At this time, the tip of the tool 38 is guided to the guide portion 36, so that the screw head 14a1 is attached to the housing 18
The tip of the tool 38 can be easily applied to the screw head 14a1 even when the tool 38 is covered and is not visible.

As described above, by rotating the screw 14a of the left and right optical axis adjusting fastening portion 14 with the tool 38 such as a screwdriver, as shown in FIG. 3, the fulcrum 12 and the upper and lower rear axis adjustments are performed. The headlamp unit 10 and the headlamp housing 18 with the fastening portion 16 for rotation as the central axis of rotation O1.
The optical axis adjustment is performed by changing the distance of the left side of the lens and tilting the surface of the lens 10a in the left-right direction.

For adjusting the vertical optical axis of the headlamp device 1, the screw 16b of the vertical rear-axis adjusting fastening portion 16 is rotated by a tool 38 such as a screwdriver so that the fulcrum 1
2 and the left and right optical axis adjusting section 14 are used as the central axis of rotation O2 to change the distance between the head lamp unit 10 and the lower side of the head lamp housing 18 to lift the lens 10a surface up and down to adjust the optical axis.

[0030]

As described above, according to the first aspect of the invention, the optical quality of the headlamp can be improved by making the optical axis adjusting section inconspicuous, and the left and right optical axis adjustments and the upper and lower optical axis adjustments are respectively performed. This can be done by turning one screw. Further, the screws for adjusting the left and right optical axes, which are conspicuous in appearance, are housed in the housing so that the screws cannot be seen even when the headlamp is viewed from the front, and the appearance quality of the headlamp can be improved.

When adjusting the left and right optical axes, a tool is inserted through the tool insertion hole at the rear end of the headlamp housing, the tool is directed toward the screw head, and the screw head is moved by the tool. Since it is operable, the optical axis can be reliably adjusted even if the screw is housed in the headlamp housing.

Further, in the invention of claim 2 or claim 3, the left and right optical axis adjusting fastening portions are provided with guide members for guiding the head of the tool to the screw head when the tool is inserted, The tool inserted from the insertion hole can be easily guided to the screw head, and the adjustment work can be speeded up.
Further, if the guide member is integrally formed with the fastening portion as in the second aspect, the assembly is easy. Further, if the guide member is detachably attached to the screw and provided separately from the fastening portion, the standard member can be used for the screw and the guide member of the different member can be used as a washer. .

[Brief description of drawings]

FIG. 1 is a side view of a main part of a motorcycle equipped with a headlamp aiming device according to an embodiment of the present invention.

2A and 2B are explanatory views of the headlamp according to the embodiment, FIG. 2A is a front view of the headlamp device, and FIG. 2B is a sectional view taken along line BB of FIG.

FIG. 3 is an explanatory diagram of optical axis adjustment, in which FIG.
(B) is a perspective view of a main part.

FIG. 4 is an explanatory diagram of a tool insertion state when the guide member according to claim 2 is used.

FIG. 5 is an explanatory diagram of a tool insertion state when the guide member according to claim 2 is used.

FIG. 6 is an explanatory diagram of a tool insertion state centering around a steering head.

FIG. 7 shows a conventional headlamp aiming device,
(A) is a front view, (b) is sectional drawing which follows the BB line of (a).

FIG. 8 is a side view of the headlamp.

FIG. 9 is a diagram illustrating the operation of the aiming device.

[Explanation of symbols]

 1 headlamp device 10 headlamp unit 12 fulcrum 14 left and right optical axis adjustment fastening portion 14a screw 16 vertical rear axis adjustment fastening portion 18 headlamp housing 18c tool insertion hole 30 space portion 36 guide portion

Claims (3)

[Claims] 1. An aiming device for a headlamp device for a vehicle, wherein a headlamp unit is mounted on a headlamp housing so that an optical axis can be adjusted by a fulcrum, a left and right optical axis adjusting fastening portion, and a vertical optical axis adjusting fastening portion. In the headlamp device, a fulcrum is provided at one end in the left-right direction, and a left and right optical axis adjusting fastening part is provided at the other end of the upper part, and the same side part as the fulcrum is provided at the bottom of the headlamp device. The upper and lower optical axis adjustment fastening parts are provided in the left and right optical axis adjustment fastening parts, and screws for adjusting the positional relationship between the headlamp unit and the headlamp housing are provided between the headlamp housing and the headlamp unit. The head lamp housing is located in the space, and a tool insertion hole is formed in the rear end of the headlamp housing for inserting a tool toward the screw head so that the screw head can be operated by the tool. A headlamp aiming device for a vehicle, which is characterized in that 2. The left and right optical axis adjusting fastening portions are integrally provided with a guide member for guiding the head of the tool to the screw head when the tool is inserted. The vehicle headlamp aiming device described. 3. A guide member for guiding the head of the tool to the screw head when the tool is inserted is separately provided in the left and right optical axis adjusting fastening portions in a detachable manner. The vehicle headlamp aiming device according to claim 1.