JPS6115531Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an optical axis adjustment device for a headlamp of a two-wheeled motor vehicle.

In general, the angle of the optical axis that illuminates the path of a motorcycle headlamp is adjusted based on the condition of one person on board, so if there are two people riding or there is a load on the rear cargo bed, the weight change will affect the vehicle body. The frame, especially the rear part of the vehicle body frame, sinks, causing the optical axis of the headlamp to tilt slightly upwards, obstructing the line of sight of the driver in an oncoming vehicle, or dazzling the driver, causing problems for the driver. Sometimes I let it happen.

However, as shown in FIG. 10, conventionally, the optical axis adjustment work of the headlamp l is performed by unfastening the headlamp support shafts s, s, or by removing the headlamp body together with the support ring f. Not only is the work complicated, but it is extremely difficult to make fine adjustments, and even with such adjustments, it is unstable due to the effects of vibration, etc. The drawback is that the optical axis cannot be adjusted sufficiently under usage conditions where the optical axis changes frequently.

The present invention has been developed in view of these drawbacks, and provides a headlamp optical axis adjustment device for two-wheeled motor vehicles, which has a simple structure that enables direct-acting operation of the elevation and elevation angle adjustment of the headlamp using a cable. The purpose is to provide.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Embodiment 1 In FIGS. 1 to 6, reference numeral 1 denotes a head pipe of a vehicle body frame, and a steering shaft 2 is rotatably supported therein by ball bearings 1a, 1a. The steering shaft 2 is connected via an upper bracket 4a and a lower bracket 4b to inner tubes 3, 3 whose lower sides are connected to an outer tube (not shown) to form a front fork. The body 7 of the headlamp 6 has bolts 7a, 7a serving as pivots, elastic buffer members 7b, 7b, 7c, 7c, and nuts 7d, 7d attached to the tips of the supporting members 5, 5 protruding forward from the headlights 3, 3. It is rotatably supported in the vertical direction through the support.

A movable piece 8 is fixed and protrudes from the lower end 7e of the body 7. The moving piece 8 has an outer tube 11
and a flexible shaft 10 inside the cable 9 that pulls the moving piece 8.
is fixed. The front end 11a of the outer tube 11 of the cable 9 is connected to the socket 12a on the front surface of the lower bracket 4b of the front fork (left side in FIG. 1).
A stationary piece 12 that is held by is fixed.
A spring 13 is compressed between the stationary piece 12 and the moving piece 8 and around the flexible shaft 10.
12 is now being fired. An optical axis adjusting means 14 for moving the movable piece 8 (in the left-right direction in FIG. 1) via the flexible shaft 10 is connected to the base end 10b of the flexible shaft 10.

As shown in FIGS. 4 and 5, the optical axis adjustment means 14 basically consists of a catch 15, a winding plate 16 as an adjusting member, and an operating lever 16b extending from the winding plate 16. It is. The winding plate 16 is rotatably joined by a set screw 17 with its bottom surface 16a abutting the bottom surface 15a inside the catch seat 15. The catch seat 15 is placed on the outside of the bottom of the catch seat 15,
Bolt 19a on the control handle 18 of the motorcycle
and clamp 2 attached by nut 19b.
It is fixed at 0,20.

An operating lever 16b is extended to the outside of the winding board 16, and a flexible shaft 10 is provided on the outer periphery of the winding board 16.
A winding groove 16c is formed to fit the winding groove 16c, and the proximal end 10b of the flexible shaft 10 is engaged with the end of the winding groove 16c, and a wave-shaped gear cut portion 16d is formed on the other outer periphery. Also,
A cylindrical body 21 is protruded from the outer circumference of the catch seat 15 and has a bottom plate 12a at the outer end. A socket portion 24 is formed.

Inside the cylindrical body 21, a locking ball 22 and a spring 23 that springs the locking ball 22 toward the opening 21b of the cylindrical body 21 are disposed, and the locking ball 22, the spring 23, and The gear cutter 16d of the winding board 16, from which the locking ball 22 can be removed by inserting the operating lever 16b, constitutes optical axis fixing means for regulating the movement of the winding board 16. In this example, the optical axis fixing means is directly linked to the winding plate 16, which is an adjusting member.

Therefore, by rotating the winding board 16 by operating the operating lever 16b, the tip 1 of the flexible shaft 10 is rotated.
0a can rotate the body 7 by moving back and forth in substantially the same direction as the operating direction (rotation direction) of the body 7 of the headlamp 6.

With the configuration described above, when the winding plate 16 is rotated clockwise by direct operation of the operating lever 16b, the flexible shaft 10 of the cable 9 moves forward, and the flexible shaft 10 of the cable 9 moves forward to match the elastic force of the spring 13. Then push the moving piece 8 forward (to the left in FIG. 1). This pushing force is applied to the bolts 7 in the support frame of the headlamp 6.
Length (radius) R from the center of a, 7a to the moving piece
The headlamp 6 rotates about the bolts 7a, 7a, and its optical axis changes upward.

In such an adjustment operation, if the optical axis angle of the headlamp 6 is selected at a predetermined position where the locking ball 22 of the gear cutter 16d of the winding plate 16 engages and the rotation of the operating lever 16b is stopped, the light The axis angle is fixed in that state.

Further, when the operating lever 16b is rotated counterclockwise, the flexible shaft 10 of the cable 9 is moved by the spring 1.
Since the moving piece 8 moves back and forth against the elastic force of the head lamp 3, the optical axis angle of the headlamp 6 changes downward. Therefore, the optical axis angle can be similarly fixed at a desired angle.

Embodiment 2 In this embodiment, as shown in FIGS. 7 to 9, the optical axis adjusting means 14 is connected to an operating rod 30 and a reciprocating member 31 (adjusting member) screwed to the threaded end portion 30a of the operating rod 30.
and a knob 35 fixed to the base end 30b. Note that the same reference numerals are used for the same components as in Example 1, and detailed explanation thereof will be omitted.

An operating rod 30 that passes through the inside of the steering shaft 2 is provided at the upper end opening of the steering shaft 2.
An upper bushing 32 that supports the base end 30b of the operating rod 30 is screwed into the lower opening, and a lower bushing 33 that supports the threaded end 30a of the operating rod 30 is fitted into the lower opening. It is attached and fixed to the bottom side of the lower bracket 4b. A knob 35 having a corrugated cam surface 35a on the inner periphery is fixed to the base end 30b of the operating rod 30.
On the other hand, a locking piece 36 such as a spring material that engages with the cam surface 35a is secured to the upper bushing 3 by a nut 37.
It is attached and fixed to the outer surface side of 2.

This locking piece 36 and the cam surface 35a of the knob 35 basically constitute an optical axis fixing means for regulating the movement of the advancing/retracting member 31. In addition, in this example,
The optical axis fixing means is indirectly linked to the advancing/retracting member 31 which is an adjusting member.

Furthermore, a snap spring 38 is provided on the threaded end portion 30a of the operating rod 30 to prevent the operating rod 30 from coming off from inside the steering shaft 2. It is fitted with a gap that does not impede the rotational movement of the

A sleeve 33b having a longitudinal guide groove 33c extends inside the lower bushing 33, and a tenon 30a that engages with the guide groove 33c is formed on the outer periphery of the sleeve 33b. A reciprocating member 31 to which an operating rod 30 is screwed is fitted, and the proximal end 10b of the flexible shaft 10 of the cable 9 is fixed to the retracting member 31. moreover,
A proximal end portion 11b of the outer tube 11 of the cable 9 is fixed to the lower bushing 33.

The outer tube 11 of the cable 9 is attached to the lower bracket 4b.
between the front surface (left side in FIG. 7) and the stationary piece 12,
The outer tube 11 is bent into a substantially S-shape, and the tip 11a of the outer tube 11 is connected to a socket 12 fixed to a stationary piece 12.
It is held by a. Further, the tip 10a of the flexible shaft 10 is fixed to the movable piece 8 protruding from the lower end 7e of the body 7 of the headlamp 6, as in the case of the first embodiment, so that the movable piece 8 and the stationary piece 12 A spring 13 is installed between the two pieces 8 and 12 to spring the two pieces 8 and 12.

With the above configuration, when the operating rod 30 of the optical axis adjusting means 14 is rotated clockwise by the knob 35, the reciprocating member 31 screwed with the operating rod 30 has its tenon 31a guiding the sleeve 33b. Groove 33c
The movable piece 8 is pulled by moving upward while being guided by the body 7 of the headlamp 6.
As in the case of the first embodiment, the optical axis is rotated about the bolts 7a, 7a, and thereby the optical axis can be adjusted.

Note that it is also possible to make the threaded connection between the operating rod 30 and the advancing/retracting member 31 a left-handed thread so that the direction of adjustment rotation of the knob 35 is reversed.

Since the present invention is constructed as described above, it has a simple structure in which the elevation angle of the headlamp can be adjusted via a cable using the optical axis adjustment means provided on the operating handle or steering shaft.
Therefore, when the optical axis of the headlamp changes drastically depending on the usage situation of the motorcycle, the operator can adjust the optical axis extremely easily while riding the motorcycle, and fix the optical axis connected to the optical axis adjustment means. In addition, the body of the headlamp is pivotably supported vertically via an elastic buffer member on a support member protruding from the inner tube of the front fork. This has an excellent practical effect in that the optical axis angle of the headlamp can be stably connected without being affected by vibrations or the like.

[Brief explanation of the drawing]

1 to 9 show embodiments of the present invention, FIGS. 1 to 6 show embodiment 1, and FIG. 1 shows optical axis adjustment of a motorcycle headlamp according to embodiment 1. The overall configuration of the device, Figure 2 is the same as Figure 1.
3 is a sectional view taken along the - line in FIG. 1, FIG. 4 is a sectional view taken along the - line in FIG. 1, FIG. 5 is a sectional view taken along the - line in FIG. The figure is a sectional view taken along the - line in FIG. 1, FIGS. 7 to 9 show Example 2, and FIG.
The figure is an overall configuration diagram of the optical axis adjustment device for a motorcycle headlamp according to the second embodiment, and FIG. 8 is the -
9 is a sectional view taken along the - line in FIG. 7, and FIG. 10 is a sectional plan view illustrating a conventional example. DESCRIPTION OF SYMBOLS 1...Head pipe, 2...Steering shaft, 4a...Upper bracket, 4b...Lower bracket, 5...Support member, 6...Headlamp, 7...Body, 7e...Lower end, 8...Moving piece , 9... Cable, 10... Flexible shaft, 10
a...Tip, 10b...Proximal end, 11...Outer tube, 1
2... Stationary piece, 13... Spring, 14... Optical axis adjustment means, 16... Winding plate, 16b... Operating lever, 16d... Gear cutter, 18... Operating handle, 20... Clamp, 21... Cylindrical body, 22...
...Latching ball, 23...Spring, 30...Operation rod, 30a...Tip threaded portion, 31...Movement/retraction member, 31a...Tonon, 33c...Guide groove, 35...
...knob, 35a...cam surface, 36...locking piece.

Claims (1)

[Scope of utility model registration request] A support member is provided protruding from the inner tube of the front fork of a two-wheeled motor vehicle, and the body of the headlamp is pivotally supported on the support member so as to be rotatable in the vertical direction via an elastic buffer member, and is moved to the lower end of the body of the headlamp. The pieces are fixed to the lower bracket of the front fork with the stationary pieces protruding from each other,
The tip of the outer tube of a cable consisting of an outer tube and a flexible shaft inside the cable is fixed to the stationary piece, while the tip of the flexible shaft led out from the tip of the outer tube is fixed to the moving piece, A spring is compressed between the movable piece and the stationary piece and around the flexible shaft, and the base end of the flexible shaft is arranged on the operating handle or the steering shaft and is connected to the flexible shaft by an adjustment member. connected to an optical axis adjusting means for moving the moving piece, the optical axis adjusting means being coupled to an optical axis fixing means directly or indirectly linked to the adjusting member and regulating the movement of the adjusting member, and further The axis of the flexible shaft is substantially perpendicular to the pivot axis of the headlamp body, so that the flexible shaft moves back and forth in substantially the same direction as the direction of rotation of the headlamp body to rotate the body in the vertical direction. Features: Optical axis adjustment device for headlights in motorcycles.