JPH0757624B2 - Optical axis adjustment device for motorcycle headlights - Google Patents

Description

The present invention relates to an optical axis adjusting device for a motorcycle headlight,
Particularly, it relates to improvement of its operability.

[Conventional technology]

In general, a motorcycle has a suspension attitude that changes depending on whether one person is on board and two people are on board, or when luggage is loaded and unloaded.
Therefore, the headlamp disposed at the front end of the vehicle body has a change in the vertical angle of its optical axis. Therefore, conventionally, an optical axis adjusting device is provided in a headlight of a motorcycle. Conventionally, as this optical axis adjusting device, for example, an upper end portion of a reflecting mirror in a headlight body is pivotally supported, an operation rod is connected to the lower end portion, and the operation rod is screwed to a rear wall of the headlight body. There was something wrong. This optical axis adjusting device can adjust the optical axis in the vertical direction by rotating the operation rod.

[Problems to be solved by the invention]

In the conventional optical axis adjusting device described above, there is almost no degree of freedom in the position of the operating portion of the operating rod, and the operating portion is located between the headlamp body and the front fork. Therefore, when adjusting the optical axis, you have to lean forward and extend your hand over the operating rod for adjustment, and it is difficult to check the direction of the optical axis while adjusting in this posture. The above optical axis adjusting device had a problem that the adjustment is troublesome.

The present invention has been made to solve such conventional problems, and an object of the present invention is to provide an optical axis adjusting device for a motorcycle headlight in which the optical axis adjusting operation is very easy. .

[Means for solving problems]

The present invention relates to an optical axis adjusting device for a motorcycle headlight, in which a reflecting mirror is swingably supported in a headlight body, an adjusting rod is connected to the reflecting mirror, and the rod is rearward. The intermediate bracket that urges and abuts on the rear end of the adjusting rod is pivotally supported on the vehicle body so that the intermediate bracket is
It is characterized in that an operating rod extending to the driver's seat side through the outside of the turning region of the front fork is connected.

[Action]

In the optical axis adjusting device for a motorcycle headlight according to the present invention,
Since the operation rod extends to the driver's seat side, adjustment can be easily performed while checking the optical axis direction while the passenger is in the riding posture. Further, since the adjusting rod mounted on the headlight body side is simply in contact with the intermediate bracket on the vehicle body side, the optical axis adjusting device is disassembled even when the headlight body is removed for valve replacement or the like. There is no need, and maintainability does not deteriorate.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 are views for explaining an optical axis adjusting device for a motorcycle headlight according to an embodiment of the present invention. In the figure, reference numeral 1 is a motorcycle, and a vehicle body 2 of the motorcycle.
The engine 2a is installed in the approximate center of the
A front fork 2c that supports 2b, a rear arm 2e that supports a rear wheel 2d are pivotally supported at the rear, and a seat 2f is placed at the top.

A headlight 3 is disposed in front of the upper part of the front fork 2c, and the area around the headlight 3 is covered with a fairing 4. The light body 5 of the headlight 3 is detachably attached to a light stay 6 fixed to the vehicle body 2 by using attachment bolts 7. A lens 8 is fitted and fixed to the front side of the light body 5, and the front surface of the lens 8 is substantially flush with the front surface of the fairing 4. A dome-shaped reflecting mirror 9 is arranged in the light body 5, and a bulb 10 is detachably inserted and fixed in the center of the reflecting mirror 9.

The upper end portion of the reflecting mirror 9 is pivotally supported on the light body 5 by a pivot 11, whereby the reflecting mirror 9 is supported to be vertically swingable with respect to the light body 5. An adjusting rod 12 is connected to the lower end of the reflecting mirror 9 via a pivot 12a. The adjusting rod 12 extends rearward through the sliding hole 5a of the light body 5, and a stopper 12b is formed at the rear portion thereof. An urging spring 13 is mounted between the stopper 12b and the rear wall of the light body 5, whereby the adjusting rod 12 is urged rearward, and as a result, the reflecting mirror 9 is shown by a solid line in the drawing. It is biased to an angular position.

An intermediate bracket 15 is swingably supported by a support pin 14a on a stay 14 fixed to the vehicle body 2 behind the light body 5. The front surface of the intermediate bracket 15 has a pressing surface 15 that contacts the rear end surface of the adjusting rod 12.
An a is formed in a curved shape, and a nut member 15c is fixed to a connecting portion 15b of the intermediate bracket 15 extending outward in the vehicle width direction.

The lower end portion 16a of the operating rod 16 is screwed onto the nut member 15c of the intermediate bracket 15. This operating rod 1
Reference numeral 6 extends to the driver's seat side through the left outside of the rotation area A of the front fork 2c. The upper portion of the operating rod 16 is rotatably supported by a bearing member 17 fixed to the vehicle body 2 via a stay 18 so as not to move in the axial direction, and an operating knob 16b is fixed to the upper end thereof. There is.

In this way, the adjusting rod 12, the biasing spring 13,
The intermediate bracket 15 and the operation rod 16 constitute a vertical optical axis adjusting device 19 for vertically adjusting the optical axis of the headlight 3.

Further, the headlight 3 is also provided with a left and right optical axis adjusting device 20 for adjusting the optical axis in the left and right directions. As shown in FIG. 3, the left and right optical axis adjusting devices 20 screw an adjusting rod 21 rotatably supported by the light body 5 onto the upper portion of the reflecting mirror 9, and attach the rod 21 to the bevel gear 22. It is configured to be connected to an operation rod 23 arranged in the up-down direction on the outside of the light body 5.

Next, the function and effect of this embodiment will be described.

The adjustment of the optical axis of the headlight 3 in the left and right directions is such that once adjustment is made at the time of factory shipment, there is almost no need for subsequent adjustment. When adjusting the optical axes in the left and right directions, the operation rod 23 can be rotated clockwise or counterclockwise, whereby the upper and lower pivots 11, 1 together with the reflector 9 and the valve 10 can be rotated.
It rotates to the left and right around 2a, and the optical axis is adjusted to the left and right.

Next, the adjustment of the optical axis in the vertical direction will be described. Since this optical axis changes in the vertical direction depending on the number of passengers and the load condition, it must be adjusted frequently.

First, when the optical axis is directed upward, the operation knob 16b is held by hand and rotated counterclockwise while the passenger is in the riding position. Then, as the operating rod 16 rotates, the intermediate bracket 15 swings clockwise in FIG. 2, that is, toward the position shown by the alternate long and short dash line in the figure, and the pressing surface 15a thereof pushes the adjusting rod 12 into the biasing spring 13. Against this, the reflecting mirror 9 swings together with the bulb 10 toward the position shown by the alternate long and short dash line in the figure about the upper pivot 11, and as a result, the optical axis is adjusted upward.

Next, when adjusting the optical axis downward, the operation knob 16b is rotated clockwise. Then, the intermediate bracket 15 swings counterclockwise, and accordingly, the adjusting rod 12 is pulled out backward by the biasing spring 13, and as a result, the optical axis is adjusted downward.

Further, when replacing the bulb 10, the headlamp 3 is removed from the light stay 6, but in this case, since the adjusting rod 12 is merely pressed against the intermediate bracket 15, the headlamp 3 is removed. 3 can be removed simply by removing the mounting bolt 7.

As described above, in this embodiment, the optical axis can be adjusted in the vertical direction simply by turning the operation knob 16b in the normal posture in which the passenger is in the driver's seat, and in this case, the direction of the optical axis can be confirmed in the normal riding posture. Since it can be adjusted while adjusting, the optical axis adjustment is easy and reliable. Moreover, since the operating rod 16 is located outside the turning area A of the front fork 2c, it does not interfere with the front fork 2c, and therefore the shape is not complicated to avoid interference.

Also, an adjusting rod 12 attached to the headlight 3,
It only abuts on the intermediate bracket 15 attached to the vehicle body 2, and the headlamp 3 is attached to the vehicle body 2 when the bulb is replaced.
The optical axis adjusting device 19 does not have to be disassembled even when it is detached from the device, and the installability does not deteriorate as compared with the conventional device.

In the above embodiment, the case where the upper side of the reflecting mirror 9 is used as the fulcrum has been described, but of course, the lower side may be used as the fulcrum, and in this case, the adjustment rod 12 may be connected to the upper side. Further, the intermediate bracket 15 and the operating rod 16 connecting structure is not limited to screwing, but various modified examples can be changed. For example, the operating rod 16 is connected to the intermediate bracket 15 rotatably and axially immovable, and The rod 16 and the bearing member 17 may be screwed together, and the point is that the intermediate bracket 15 is swung by the operation of the operation rod 16. Furthermore, in the above embodiment, the optical axis adjusting device 19 is provided on the left side of the vehicle body, but it may of course be provided on the right side.

〔The invention's effect〕

As described above, according to the optical axis adjusting device of the present invention, since the adjusting rod is pressed against the intermediate bracket and the operating rod extending toward the driver's seat is connected to the intermediate bracket, it is possible to operate from the riding position. There is an effect that the axis adjustment becomes easy and reliable, and even when the headlamp is removed by replacing the bulb or the like, it is not necessary to disassemble the optical axis adjusting device and maintainability can be maintained.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of an optical axis adjusting device according to an embodiment of the present invention, FIG. 2 is a cross-sectional side view thereof, FIG. 3 is a cross-sectional side view showing the left-right direction adjusting device portion, and FIG. 1 is a side view of a motorcycle to which an embodiment is applied. In the figure, 1 is a motorcycle, 2 is a vehicle body, 2c is a front fork, 3 is a headlight, 5 is a light body (headlight body), 9 is a reflector, 10 is a bulb, 12 is an adjusting rod, and 13 is Bias spring, 15 is an intermediate bracket, 15a is a pressing surface, 1
6 is an operating rod, 19 is an optical axis adjusting device, and A is a rotating region of the front fork.

Claims (1)

[Claims] 1. A device for vertically adjusting an optical axis of a motorcycle headlamp having a headlamp body detachably attached to a vehicle body, the device being disposed in the headlamp body to support a bulb. One end of the reflector in the up-down direction is pivotally supported on the headlamp body, and the other end of the reflector is connected to an adjustment rod that penetrates the rear wall of the headlamp body and extends toward the rear of the vehicle body. An urging spring that urges backward is attached, and an intermediate bracket having a pressing surface that comes into contact with the rear end of the adjusting rod is swingably attached to the vehicle body, and the outside of the turning region of the front fork is attached to the intermediate bracket. An optical axis adjusting device for a motorcycle headlight, characterized in that an operating rod extending through the vicinity of a driver's seat is connected.