JPS639497Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a headlight device.

Conventionally, a light unit consisting of a headlight bulb and a reflector was used as a headlight device.
It is known that the light case is housed in a light case so as to be rotatably adjusted in the left-right direction, and the light case is fixed to a stay extending from a front fork with screws so as to be rotatably adjustable in the vertical direction.

By the way, in a headlight device with such a structure, the bolt that fixes the light case to the stay on the vehicle body also has the function of adjusting the optical axis in the vertical direction. At the time of installation, the optical axis must be adjusted in the vertical direction at the same time, and the installation on the vehicle body side and the adjustment of the optical axis are very troublesome.

In particular, in a two-lamp headlight device, the light emitted from both light units interferes with each other, so when adjusting the optical axis, it is necessary to repeatedly adjust the two while relating them, making it difficult to adjust the optical axis. It becomes troublesome.

The present invention was developed in view of the above circumstances, and aims to provide a headlight device that can be easily attached to the vehicle body and adjust the optical axis, and also has an excellent appearance. The problem lies in the fact that each optical axis adjustment shaft screwed onto the light unit is connected via a transmission mechanism to an operating section provided centrally on the light projection surface side of the light unit.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the main parts of a motorcycle equipped with a headlight device according to the present invention. In the figure, reference numeral 1 denotes a fairing that covers the front of the vehicle body and reduces air resistance during running. An opening 2 is formed in the center of the front protrusion of the fairing 1, and a headlight device 3 is installed in the opening 2 with its front surface exposed.

In the headlight device 3, a pair of left and right light units 6a and 6b each consisting of a headlight bulb 4 and a reflector 5 are housed in a single light case 7, and the front surface of the light case 7 is covered with a single lens 8. Furthermore, each of the light units 6a and 6b has a structure in which the optical axis can be individually adjusted from outside the light case 7 by an optical axis adjustment mechanism 9, which will be described later, and which is connected to the light unit. In this headlight device 3, a recess 10 formed on the lower surface of the light case 7 is connected to a stay 12 extending forward from the lower part of the subframe 11.
A bracket 14 is fitted to the convex portion 13 of the light case 7 via an elastic member and is provided on the upper part of the light case 7.
is integrally fixed to the subframe 11 by being screwed to a stay 15 extending forward from the top of the subframe 11. The subframe 11 is integrated into the vehicle body frame by having its upper rear end screwed to a bracket 17 fixed to the head pipe 16 and its lower rear end screwed to a bracket fixed to a down tube (not shown). is fixed.

A radiator 18 is disposed between the head light device 3 and the head pipe 16, and the lower side of the radiator 18 is screwed to the stay 12, and the upper side of the radiator 18 is screwed to the stay 19 extending rearward from the upper part of the subframe 11. It is integrally fixed to the subframe 11 by being screwed. Further, a meter unit 20 is disposed above the radiator 18, and this meter unit 20 is fixed to a stay 21 extending upward from the top of the subframe 11.

Further, as shown in FIG. 2, air inlets 22 and 23 are formed on the upper and lower sides of the headlight device 3, respectively, in the fairing 1, and these air inlets 22 and 23 are connected to the upper grille 2.
4 and a lower grille 25.
In addition, 26 in Figure 1 is a shielding plate, and this shielding plate 2
6 can effectively guide outside air flowing into the fairing 1 from the air inlet ports 22 and 23 to the radiator 18, and can also block the heat of the radiator 18 from moving upward. This has the effect of preventing water from entering from the back side to the front side.

The optical axis adjustment mechanism 9 will be explained with reference to FIGS. 3 to 7. Note that the left and right light units 6a and 6b in FIG. 3 can be adjusted by optical axis adjustment mechanisms 9 having the same configuration, and for convenience of explanation, the left light units 6a and 6b shown in FIGS. 3 and 4 will be explained here. Optical axis adjustment mechanism 9 of light unit 6a
We will only explain this and omit the other side.

As shown in FIGS. 3 and 4, a bracket 31 for supporting the reflecting mirror 5 is attached to the back surface of the reflecting mirror 5. As shown in FIGS. The bracket 31 is supported at three points as shown by A, B, and C in FIG. The upper left corner and the lower right corner indicated by symbols B and C in the figure are supported so as to be movable and adjustable in the directions indicated by arrows A and B in FIG. 4, respectively.

To explain the support portion indicated by the reference numeral A, as shown in FIG. A ball receiving member 33 is ball-fitted to the ball portion 32a.
Further, this ball receiving member 33 is fixed to the bracket 31.

To explain the support part indicated by the symbol B and the operating mechanism connected to the support part, as shown in FIG. Supported. The rear end of the bolt 34 projects outward from the light case 7, and a crown gear 35 is integrally attached to this externally projecting end. Further, a nut 36 is screwed into the bolt 34,
This nut 36 is fixedly fitted into the bracket 31. The nut 36 is formed into a substantially arcuate cross section so that the diameter of the threaded portion gradually increases toward both open ends, and even when the nut 36 is inclined with respect to the bolt 34 during optical axis adjustment, the bolt 34 It is designed to screw together smoothly.

A pinion 37 is meshed with the crown gear 35 as shown in FIG.
7 is rotatably supported by a bracket 38. As shown in FIG. 5, one end of a flexible wire (flexible shaft) 39 is coaxially connected to the pinion 37, and the other end of the wire 39 is
A screw (operation section) 40 disposed on the light projection surface side of the light unit 6 is coaxially connected. The screw 40 is rotatably attached to the tip of a wire cover pipe 41 that covers the flexible wire 39, and the pipe 41 is supported by a bracket 42 extending from the light case 7.

The crown gear 35 and pinion 37
The wire 39 constitutes a transmission mechanism 43 that transmits the rotation of the screw 40 to the bolt 34.

Therefore, when adjusting the optical axis of the light unit 6a, the screw 4 provided on the upper side of the light case 7 and on the light emitting surface side of the light unit 6a is used.
0 in a predetermined direction, the pinion 37 is rotated in a predetermined direction via the wire 39. Along with this, the crown gear 35 meshing with the pinion 37 and the bolt 34 integrally attached to the gear 35 rotate in a predetermined direction to tighten the nut 36.
is moved in the directions of arrows A and B in FIG. As a result, the bracket 3 is integrally formed with the nut 36.
8 and the light unit 6a are rotated in the left-right direction about a line _l1 connecting both the support parts indicated by symbols A and C in the figure, and as a result, the optical axis of the light unit 6a is adjusted in the left-right direction. .

On the other hand, the support portion indicated by the symbol C in FIG. 3 and the operating mechanism connected thereto have the same configuration as the support portion indicated by the reference symbol B and the operating mechanism connected thereto. That is, as shown in FIG. 3, among the screws arranged on the upper side of the light case 7 and concentrated on the light projection surface side of the light unit 6a, when the second screw 44 from the left is rotated, the second screw 44 is rotated. The pinion 46 is rotated in a predetermined direction via the wire 45 shown in FIGS. 6 and 7, and as a result, the crown gear 47 meshing with the pinion 46 and the bolt 48 integrally attached to the gear 47 are rotated. , rotate in a predetermined direction to move the nut 49 in the directions of arrows A and B in FIG. As a result, the bracket 31 and the light unit 6a, which are integrated with the nut 49, are rotated in the vertical direction about the line _l2 connecting both the support parts indicated by the symbols A and B in the figure, and as a result, the light unit 6a Optical axis adjustment in the vertical direction is performed. In addition, in FIG. 4, 50 is a position valve, and 51 is a rubber cover.

In this embodiment, when adjusting the optical axis, the tip of a screwdriver may be inserted through the gap in the grille 24, fitted into the screws 40 and 44, and the screws may be rotated in this state.

Further, in this embodiment, an example in which the present invention is applied to a headlight device for a motorcycle has been described, but the present invention is not limited to this, and can also be applied to a headlight device mounted on a three-wheeled motorbike or a car.

As explained above, according to the present invention, each adjustment shaft that screws and locks a plurality of predetermined locations on the light unit is connected to the operating section which is centrally provided on the light emitting surface side of the light unit via a locking mechanism. Since the optical axis is connected to the optical axis, the optical axis can be adjusted very easily, and the appearance is also excellent. In particular, in the case of a two-lamp type headlight device with two light units, compared to a single-lamp type, it is necessary to repeat fine optical axis adjustments for each light unit, making optical axis adjustment extremely easy. Becoming has great meaning. Further, the attachment of the headlight device to the vehicle body and the adjustment of the optical axis of the light unit can be carried out independently, making it possible to easily attach the headlight device to the vehicle body.

In addition, since the transmission mechanism is composed of a gear mechanism connected to the adjustment shaft and a flexible shaft connecting the gear mechanism and the operating section, manufacturing errors and assembly errors can be avoided by the flexible shaft. It is possible to compensate for the damage caused by the damage, and the assembly can be easily performed. Furthermore, since the operation section can be freely arranged, it is advantageous in terms of the layout of devices such as the operation section, and by selecting an appropriate position for the operation section, the optical axis adjustment work can be made easier.

[Brief explanation of drawings]

Figures 1 to 7 show an embodiment of the present invention, with Figure 1 being a longitudinal sectional side view of the front part of a motorcycle, Figure 2 being a view taken in the direction of the arrows in Figure 1, and Figure 3 showing a headlight device. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a sectional view taken along the - line in FIG. 3, FIG. 6 is a sectional view taken along the - line in FIG. 3, and FIG. The figure is a rear view of the headlight device. 1...Fair ring, 2...Opening, 3...Headlight device, 4...Headlight bulb, 6
a, 6b...Light unit, 7...Light case, 9...Optical axis adjustment mechanism, 11...Subframe, 32...Rod (support shaft), 34...Bolt (adjustment shaft), 35...Crown Gear, 36... Nut, 37... Pinion, 39... Flexible wire (flexible shaft), 40... Screw (operating part), 43...
...Transmission mechanism, 44... Screw (operation part), 46...
Pinion, 47...Crown gear.

Claims (1)

[Scope of utility model registration request] This is a two-lamp type headlight device in which two light units each consisting of a headlight bulb and a reflector are housed in a light case, and each of the light units is connected with an independent optical axis adjustment mechanism. In the optical axis adjustment mechanism, a predetermined part of the light unit is rotatably supported by a support shaft extending from the light case, and another predetermined part of the light unit is rotatably attached to the light case and has screws on the outer periphery. The adjustment shafts are configured to be screwed and locked to adjustment shafts having a section, and each of the adjustment shafts transmits the power of the light unit through a transmission mechanism consisting of a gear mechanism and a flexible shaft connected to the gear mechanism. A headlight device characterized in that the headlight device is connected to an operation section that is concentrated on the light projection surface side.