JPH04129850A - Leveling device for two-wheeler headlamp device - Google Patents

Abstract

PURPOSE:To ease the leveling and the aiming adjustment of a headlamp by providing an adjusting screw, passing through a bracket and a cam and threadedly engaged and connected with a nut, on a body, and springedly mounting a spring between the body and the bracket. CONSTITUTION:The approximate 90 deg. rotation of a cam 15 in a clockwise direction with a nut 16 as a center causes the abutting of the front surface 15a of the cam 15 to the back surface of the vertical part 14b of a bracket 14. The bracket 14 is retreated by the force of a compression coil spring 34 by the difference of D-D1, where D: a distance from the center O of the nut 16 to the upper surface 15b of the cam 15 and D1: a distance to the front surface 15a, and a headlamp device 1 is rotated in a counterclockwise direction to downwardly adjust an irradiation angle. Then the rotation-adjustment of an adjusting screw 18 causes the advancing and retreating of the nut 16 together with the cam 15, and the advancing and retreating of the bracket 14 by the force of the compression coil spring 34. Consequently the irradiation angle of the headlamp device 1 can be adjusted forward or rearward.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a leveling device for a headlamp device for a two-wheeled vehicle.

[Prior Art] Conventionally, in vehicle headlamp devices, it is necessary to correctly adjust the direction of illumination, so the reflector or headlamp unit is held so as to be tiltable in the front, rear, left and right directions.
The irradiation direction is adjusted (aiming adjustment) by tilting this using an aiming mechanism during assembly adjustment, inspection, replacement, etc.

In addition, the vehicle body is supported by a suspension system so that it can move up and down in order to absorb vibrations, shocks, etc., so the posture of the vehicle body changes depending on the load and the position where the load is applied. Change. In particular, when a load is applied to the rear part, the irradiation direction is directed upward, which may dazzle the driver of an oncoming vehicle. Therefore, the adjustment of the irradiation direction based on this load (leveling adjustment) can be automatically performed separately from the aiming adjustment by remote control from the driver's seat. This kind of headlight leveling device is
In the case of automobiles, the adjustment is generally performed using a driving means such as a motor, so that adjustment in multiple stages is possible.

[Problems to be Solved by the Invention] By the way, in two-wheeled vehicles such as motorcycles, when two people are riding, the optical axis of the headlight is directed upwards considerably compared to when two people are riding, so it is difficult to see the oncoming vehicle. The effect on drivers traveling in front of the vehicle is greater than that of ordinary automobiles, so leveling adjustments are required to compensate for this. At present, it is not mandatory to install this type of leveling device, but standards have been set in Europe and other countries, and making it mandatory is being considered. In that case, it may be possible to use an automotive leveling device for motorcycles, but automotive leveling devices are expensive because they have multiple levels of upper and lower adjustment or stepless adjustment, and use electronic components such as motors and circuits. There was a problem in applying it as is. In addition, in the case of two-wheeled vehicles, the load changes in two stages with one or two people riding, so
There was a need for an inexpensive device that could switch the irradiation angle in two or three stages without requiring multiple stages of adjustment.

Therefore, the present invention has been made in view of the above-mentioned conventional problems and demands, and its purpose is to provide a relatively simple and easy-to-use headlight leveling adjustment and aiming adjustment. An object of the present invention is to provide an inexpensive leveling device for a headlamp device for a two-wheeled vehicle.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a leveling device for a headlight device for a two-wheeled vehicle that changes the illumination angle, in which a rotation fulcrum is attached to the vehicle body so as to be rotatable in the longitudinal direction. A bracket is provided on the opposite side, a cam that is rotated by an operating member is provided behind the bracket, a nut is rotatably housed in the cam, and the nut is inserted through the bracket and the cam. An adjusting screw that is threadedly connected to the vehicle body is provided on the vehicle body, and a spring is elastically loaded between the vehicle body and the bracket.

[Operation] In the present invention, the cam, the nut provided on the cam, and the adjusting screw screwed into the nut connect the headlamp device to the vehicle body in an adjustable manner. That is, when the cam is rotated by the operating member, the distance between the vehicle body and the bracket is changed, and accordingly the headlamp device is rotated in the front and rear directions around its rotational fulcrum, and the irradiation angle is adjusted ( leveling adjustment). In addition, when the adjusting screw rotates to move the nut forward and backward along with the cam, the distance between the vehicle body and the bracket changes, so the headlight device rotates back and forth around its pivot point, causing the illumination angle to change. is adjusted (aiming adjustment)
be done.

[Example 1] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

Fig. 1 is a side sectional view showing an embodiment of a leveling device for a motorcycle headlight device according to the present invention, Fig. 2 is an exploded perspective view of the same leveling device, and Fig. 3 is a view from the back side of the cam. FIG. In these figures, 1 is a headlight device for a two-wheeled vehicle, and this headlight device 1 includes a light body 2 whose inner surface forms a reflective surface, a front lens 3 that covers the front opening of the light body 2, and a light body 2. A rim 4 is provided on the upper front side of the lamp and fixed to the vehicle body side, a headlamp bulb 5 is provided inside the lamp body 2, and a bulb 5 is fitted to the rear top of the lamp body 2.
The socket 6 is made up of a back cover 7 and the like that cover the socket 6. A spring mounting portion 8 is integrally provided on the upper surface of the lamp body 2 and protrudes, and a leaf spring 9 is interposed between the spring mounting portion 8 and the inner surface of the rim 4. It forms a rotation fulcrum O in the front-rear direction.

Reference numeral 13 denotes a leveling device which also serves as an aiming device and is disposed at the lower part of the headlamp device 1.
The lamp body 2 includes an L-shaped bracket 14 attached to the lower surface of the lamp body 2, and a cam 15 for holding a nut 16 is disposed behind the L-shaped bracket 14.

The horizontal part 1.4a of the bracket 14 is fixed to the lower surface of the lamp body 2 by a plurality of setscrews 17, and the center of the vertical part 14b has an azimuth screw 1.
An insertion hole 19 into which 8 is inserted is provided.

As shown in FIGS. 2 and 3, the cam]-5 consists of a generally wedge-shaped block in which the thickness on the lower end side gradually decreases from the upper end side, and inside the block, there is a long rear end in the vertical direction at the center in the width direction. A diagonal elongated hole 20 that slopes downward is formed. The front end of the elongated hole 20 is open from the upper half of the front surface 15a of the cam 15 to the front half of the upper surface 15b, and the rear end is open from the upper part of the back surface 15c to the lower surface 15d of the cam 15.

Further, grooves 21 and 22 for holding the nut 16 are formed on both left and right side walls of the elongated hole 20. These grooves 2
1.22 has one end opening in the rear surface 15c and the other end extending halfway into the elongated hole 20, and similarly to the elongated hole 20, it is formed diagonally downward toward the rear.

At the upper part of the front side of the cam 15, a protrusion 24 that protrudes forward with an appropriate size is integrally provided on both sides of the elongated hole 20 with the front side opening of the elongated hole 20 interposed therebetween. This protrusion 24 is formed in a semi-cylindrical shape, and when the cam 15 is operated, the bracket 14
It comes into contact with the back surface of the vertical portion 14b to give a click feeling.

A pin attachment portion 28.2 is coaxially formed with an insertion hole 27 at both ends of the lower surface of the cam 15, through which the connecting pin 26 is inserted.
9 is provided oppositely. One end of a wire 30 forming an operating member of the cam 15 is connected to the bin 26, and the other end of the wire 30 is connected to a switching lever (not shown) provided on or near the handle.

The nut 16 is formed in a cylindrical shape and has a threaded hole 31 formed through it in the radial direction, and is rotatably inserted into the groove 21, 22 from the rear of the cam 15 with both ends held therein. and is screwed into the adjuster screw 18.

The head of the adjuster screw 18 is connected to an L-shaped frame plate 33 disposed in front of the bracket 14.
3 is fixed to the vehicle body 11 by welding or the like. Also,
The adjusting screw 18 passes through the insertion hole 19 of the bracket 14 and is screwed into the threaded hole 31 of the nut 16, and its tip passes through the elongated hole 20 of the cam 15.
protruding from behind. Between the frame plate 33 and the bracket 14, a compression coil spring 34 for biasing the bracket 14, in other words, the headlamp device 1 rearward, is mounted on the adjuster screw 18 and elastically mounted.

FIGS. 4(a) and 4(b) are diagrams showing the state of the leveling device 13 having such a configuration before the leveling adjustment and the state after the leveling adjustment. In this case, the distance from the center 0 of the nut 16 to the top surface 15b of the cam 15 is set larger than the distance D□ from the center O to the front surface 15a (
D>Dl).

In the state before the leveling adjustment shown in FIG. 4(a), the cam 15 is held substantially horizontally with the front surface 15a facing down.
The upper surface 15b is in close contact with the back surface of the vertical portion 14b of the bracket 14. At this time, the headlamp device 1 is set to a normal (-Mahayana) irradiation angle. In this state,
When luggage is placed on the rear seat or a fellow passenger gets on the rear seat, a load is applied to the rear of the vehicle body, causing the headlight device 1 to face upward. Therefore, operate the switching lever near the handle to switch the cam 15 as shown in Figure 4 (
When the nut 16 is rotated approximately 90 degrees clockwise as shown in b), the front surface 15a of the cam 15 comes into close contact with the rear surface of the vertical portion 14b of the bracket 14. This cam 15
During the operation, the protrusion 24 presses the bracket 14 against the compression coil spring 34, and the pressing force decreases just before the rotation ends, giving a click feeling to the operator's hand. The cam 1
5 is rotated approximately 90 degrees, and its front surface 15a is attached to the bracket 14.
When the bracket 14 is brought into close contact with , the bracket 14 is retracted by the force of the compression coil spring 34 by the difference D-D, thereby causing the headlamp device 1 to rotate counterclockwise around the rotation fulcrum O (Fig. 1). The irradiation angle is adjusted downward (leveling adjustment).

Next, when adjusting the aiming of the headlamp device 1, the fourth
In the state shown in figure (a), adjust the adjuster screw 18.
Adjust the rotation. Then, depending on the direction of rotation, the nut 16 moves forward or backward together with the cam 15 along the adjusting screw 18, and in the case of forward movement, the nut 16 moves forward or backward along the adjusting screw 18.
4 to the front against the compression coil spring 34,
In the case of retraction, the bracket 14 is moved backward by the force of the compression coil spring 34. Therefore, similarly to the leveling adjustment, the headlamp device 1 is rotated forward or backward about the rotational fulcrum O to adjust the illumination angle.

In this embodiment, the cam 15 has two cam surfaces, the front surface 15a and the top surface 15b, and a case has been described in which one stage of leveling adjustment is performed by the front surface 15a, but the present invention is not limited to this. For example, if a diagonal cam surface that is inclined at approximately 45 degrees is provided between these surfaces, the leveling adjustment can be performed in two stages.

[Effects of the Invention] As explained above, the leveling device for a motorcycle headlamp device according to the present invention allows the angle of the headlamp device to be adjusted in the longitudinal direction with respect to the vehicle body using a cam, a nut, and an adjusting screw. Since the headlight device is connected and rotated by the rotation of the cam, the illumination angle of the headlight device can be adjusted according to changes in load, and by adjusting the rotation of the adjuster screw, Since the cam can move forward and backward to adjust the aiming of the headlight device, it can also be used as an aiming device, has a relatively simple structure, has a small number of parts, and can be provided at low cost. It's very large.

[Brief explanation of drawings]

Figure 1 is a side sectional view showing an embodiment of the leveling device for a motorcycle headlight device according to the present invention, Figure 2 is an exploded perspective view of the same leveling device, and Figure 3 is a view from the back side of the cam. FIGS. 4(a) and 4(b) are perspective views showing the state of the leveling device before and after the leveling adjustment. DESCRIPTION OF SYMBOLS 1... Headlight device, 2... Light fixture body, 3... Front lens, 4... Rim, 5... Bulb, 9... Leaf spring, 11... Vehicle body, 13...・Leveling device, 1
4...Bracket, 15...Cam, 1-6-...Nut, 18...Adjustment screw, 19...
-Insertion hole, 2o...Long hole, 3o...Wire, 31.
...Screw hole, 34...Compression coil spring.

Claims (1)

[Claims] In a leveling device for a motorcycle headlamp device that changes the illumination angle, a bracket is provided on the side opposite to the rotation fulcrum side that is attached to the vehicle body so as to be rotatable in the longitudinal direction, and a cam that is rotated by an operating member is installed. An adjusting screw is provided at the rear of the bracket, a nut is rotatably housed in the cam, and an adjusting screw is provided on the vehicle body, passing through the bracket and the cam and being threadably connected to the nut;
A leveling device for a headlamp device for a two-wheeled vehicle, characterized in that a spring is loaded between the vehicle body and the bracket.