JP3406158B2 - Motorcycle headlight structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle headlight structure, and more particularly to an optical axis adjusting mechanism for the headlight structure.

[0002]

2. Description of the Related Art A cowling is provided in front of a handle of a motorcycle, and a headlight is mounted on the cowling. The headlight is composed of a lamp, a body for holding the lamp, a lens arranged on the front surface of the lamp and fixed to the body, and a reflector arranged on the rear surface of the lamp and inside the body. It is constructed as an integral headlight unit and attached to the cowling. The lens aligns the divergent light from the lamp and the reflected light from the reflector with a concave and convex reflecting surface so that the direction of refraction is changed according to the lens passing position so that it illuminates a substantially straight front. In addition, a so-called lens cut is formed on the rear surface in an uneven shape according to the position. Therefore, the lens shape becomes thick and forms a very gentle curved surface that is almost flat.

When such a headlight is mounted on a vehicle body, it is necessary to perform aiming adjustment (optical axis adjustment). Conventionally, as one method of adjusting the optical axis, a cowling to which a headlight unit is fixed is rotatably attached to a vehicle body, and the headlight unit is integrally rotated up and down together with the cowling so that the lamp optical axis (irradiation direction). Was being adjusted.

As another conventional optical axis adjusting method, the headlight is fixed to the cowling side and only the reflector is covered.
A method has been used in which the lamp optical axis is adjusted by rotatably attached to the wring and rotating the reflector.

There is also a method of adjusting the aiming by making the entire headlight rotatable with respect to the cowling.

On the other hand, as the reflector, an individual reflector is eliminated, and a reflection surface is formed on the inner surface of the body instead of a simple reflection curved surface, and the reflection direction is aligned so as to face a substantially constant forward direction, and aluminum is adhered to this surface. Multi-reflectors have been put to practical use. When such a multi-reflector is used, it is not necessary for the front lens to refract light to align the directions, and simple glass can be used.

[0007]

However, in the above-mentioned conventional optical axis adjusting method, when the entire cowling is rotated, the rigidity of the cowling made of resin is usually limited, and the head is heavy. The light cannot be set too far away from its axis of rotation, so the direction can change greatly with a small amount of turning adjustment, making fine adjustment of the optical axis difficult and achieving the desired optimal optical axis. It was very time consuming.

Further, since the lens shape is restricted, it is not possible to form a curved surface which greatly curves from the front surface to the side surface,
Therefore, the mating portion on the side face with the cowling is not smoothly continuous and the appearance is not excellent, and the desired compact shape cannot be obtained.

Further, when the optical axis is adjusted by rotating only the reflector, the mechanism becomes complicated, the manufacturing process becomes troublesome, and the cost increases.

Further, when the entire headlight is rotated with respect to the cowling, an overlapping portion corresponding to the position adjustment range of the headlight is formed between the headlight and the cowling over the outer peripheral edge of the headlight, which impairs the appearance. Utotomoni will need a clearance adjustment of the part, also Kauri
The rigidity of the ring has occurred also a problem on the locally reduced strength.

The present invention has been made in view of the above-mentioned drawbacks of the prior art. The mating portion between the headlight and the cowling is surely continuous without moving each other to improve the mating state, and An object of the present invention is to provide a headlight structure for a motorcycle, which has improved rigidity and can easily perform fine adjustment of the optical axis.

[0012]

In order to achieve the above object, the present invention provides a headlight including a cowling provided at a front portion of a vehicle body, an opening provided at a front surface of the cowling, and a body for holding a lens and a lamp. The head is fixed to the cowling so that the lens faces the opening.
The entire cowling including the light can be rotated around a horizontal axis.
In a possible and the headlight structure of <br/> motorcycle optical axis adjustment of the lamp attached to the vehicle body side, the horizontal axis
Is provided rearward of the lamp, and the headlight is
Align the reflection direction on the inner surface of the body
The multi-reflector is formed and the lens is mounted.
The glass shape is transparent and the lens shape is the front of the cowling.
The curved surface that greatly bends from the
Fold both sides of the back to extend in the horizontal axis direction,
The end portion of the lens is superposed on the outside of the folded portion,
A headlight structure for a motorcycle, characterized in that a cowling is smoothly continuous to an end portion of a lens .

According to this configuration, while fixing the combined unit is fixed to one another and a cowling and headlights, Kauri
The ring itself can be rotated together with the headlight, and the mating parts are held at a fixed optimum position without mutual positional movement, so that the appearance is improved and stable and high strength is maintained. Also, since both sides of the reflector are folded back to increase the length to the rear, the cowling is reinforced, and the rigidity of this cowling is increased, so that the headlight can be moved forward from the horizontal rotation axis at a large distance. It can be provided. This allows fine adjustment of the optical axis. Also, since a multi-reflector is used, the front lens
The glass can be made of clear glass and therefore
The weight of the lens is reduced and the freedom of shape is improved.
Be done. Also, especially when using a multi-reflector,
Since this lens is made of clear glass,
A large cowling from the front to the side
The mating part with and can be a smoothly continuous curved surface,
The appearance of the mating part is improved and the overall compact shape
Can be in the form of.

[0014]

DETAILED DESCRIPTION OF THE INVENTION In the preferred embodiment,
A pair of upper and lower handle crowns that connect a pair of left and right front forks, and a support frame member provided between the pair of handle crowns are provided, and the horizontal shaft is provided above the support frame member. It is characterized in that the slide member on the cowling side is attached to the lower portion so that the position can be adjusted.

According to this construction, a small slide member can be fixed on the cowling side, and a position adjusting portion for sliding contact with the slide member can be provided on the handle crown side, and the position can be adjusted by bolts for fastening. The optical axis can be easily adjusted with a simple structure.

[0016]

[0017]

[0018]

[0019]

[0020]

1 is an overall side view of a motorcycle to which the present invention is applied. In this motorcycle 1, front forks 17 support front wheels 18 from both left and right sides, and the pair of front forks 17 is fixed to a handle 16. The left and right front forks 17 on the lower side of the handle 16 are connected to each other by a pair of upper and lower handle crowns 15a and 15b. The steering shaft 2 is connected and fixed between the two steering wheel crowns 15a and 15b, which are slightly rearward in the vehicle width direction central portion, and the steering shaft 2 is rotatably mounted in the head pipe 3. As a result, the handle crowns 15a, 1
The steering shaft 2 rotates in the head pipe 3 via 5b, and the left and right front forks 17 rotate together with this to change the direction of the front wheel 18.

A down tube 4 is welded and fixed to the head pipe 3. The down tube 4 constitutes a vehicle body frame together with the upper gusset 9 and the lower gusset 8 and the vertical pipe 72, the left and right rear upper pipe frames 12, the lower pipe frame 13 and the like in the center of the vehicle body.

The engine 5 is supported by this vehicle body frame and drives the rear wheels 21 to rotate via a chain (not shown). The engine 5 and the entire body frame are the body cover 1
Covered with 4. The vehicle body cover 14 covers left and right front side covers 26 that cover the lateral sides of the upper portion of the down tube 4 and the engine 5 and that has an under cowl portion 27.
A front top cover 64 that connects the upper portions of the front side covers 26 to each other and covers the down tube 4 from above.
And left and right rear sides that cover the sides of components such as an air cleaner (not shown) attached to the upper gusset 9, the oil tank 60, the battery 62, the fuel tank 63, and the upper pipe frame 12 that are disposed below the seat 10. A combination of a cover 70, a sprocket cover 65 that covers the side of the drive sprocket of the engine 5, and a tail cover 66 that covers the tail lamp 43 from above are combined. Each of these constituent cover members is fixed to a mounting portion provided at an appropriate position of the vehicle body frame by means such as screwing.

The handle crown 1 below the handle 16
A cowling 19 is attached to the front side of 5a, 15b. A headlight 20 is attached to the cowling 19. 2 and 3 are a front view and a side view of the handle crown portion, respectively. Bosses 101 are integrally provided so as to project at two places on the lower left and right sides of the upper handle crown 15a. The ends of the upper and lower connecting frame members 103 are inserted and fixed in the boss 101 via a rubber cushion 102. A bracket 108 is fixed to the lower end portion of the upper and lower connecting frame member 103 by welding or the like, and the lower end portions of the left and right frame members 103 are connected above the lower handle crown 15b to form a U-shaped frame member. .

The left and right connecting frame members 104 are joined and fixed between these two upper and lower connecting frame members 103. This frame material 104 is
It has a substantially U shape, and its upper end portion 104a projects forward. The bracket 105 is joined to the upper end portions 104a of the frame members 104. On both sides of the bracket 105 from the rear, the cowling 19 is bent downward.
A fixing portion 105a for rotatably mounting is provided.
Incidentally, 106a is a horizontal axis (rotation axis) of the cowling 19. A nut 106 is welded and fixed inside the fixing portion 105a, and a bolt (not shown) coaxial with a horizontal shaft (rotating shaft) 106a is attached to the nut 106 to rotatably support the cowling. 107 is a horn.

The bracket 108 to which the lower ends of the above-mentioned upper and lower connecting frame members 103 are fixed is fixed to the lower handle crown 15b by bolts 110. In this case, the bolt 110 includes the rubber grommet 115 (FIG. 3) and the sleeve 11 mounted on the mounting portion 109 of the bracket 108.
6 is screwed to the handle crown 15b.

The bracket 108 is further integrally formed with a positioning fixing piece 114 (FIG. 3) projecting forward for fixing the lower end of the cowling 19 in a positionally adjustable manner. The cowling 19 is attached to the positioning fixing piece 114.
The slide piece 111 fixed to the side is slidably engaged. The slide piece 111 has a long hole 113, and the bolt 112 is fastened to the positioning fixing piece 114 through the long hole 113.

The cowling 19 is a cover body 1 made of resin.
17 and a headlight 20 (FIG. 1) mounted on the cover body 117. Cover body 117
A mounting piece 123 is integrally formed on the upper part of the inner surface of the headlight 20. The upper bracket 126 of the headlight 20 is fixed to the boss 117a provided on the mounting piece 123 with a screw 122. In addition, a boss 117b is formed in the lower portion on the inner surface side of the cover body 117, and the lower bracket 127 of the headlight 20 is fixed thereto by a screw 124.

The slide piece 111 for rotational positioning of the cowling 19 is fastened together with the lower bracket 127 to the boss 117b with a screw 124. The slide piece 111 is further fixed to another boss 117c provided on the cover body 117 with a screw 125.

The headlight 20 in this example is a front lens 119 made of transparent glass, and a reflector body 120 having a reflecting surface formed as a multi-reflector.
And a lamp unit 128 having a lamp 121.

4 and 5 are a side view and a front view of the headlight, respectively. The cover body 117 described above
As shown in FIG. 5, the upper brackets 126 for attaching the brackets are provided at two upper ends of the reflector body 120. Further, the lower bracket 127 is provided at the center of the lower portion of the reflector body 120. Lamp unit 1
A socket 129 for connecting three lines for switching the upper and lower beams and for grounding is connected to 28.

6 to 9 are respectively AA and B- of FIG.
B, C-C. It is sectional drawing of DD. The peripheral edge portion 119 a of the lens 119 is provided with the receiving portion 12 of the reflector body 120.
0a is joined through the hot melt 130 at an appropriate position. As shown in FIG. 6 (A-A cross section) and FIG. 8 (C-C cross section), the cover main body 117 is continuous with the front surface of the lens 119 in a smooth curved shape in the vertical plane.
Further, as shown in FIGS. 7 (BB cross section) and 9 (DD cross section), the cover body 117 is continuous with the front surface of the lens 119 in a smooth curved shape even in the horizontal plane.

At both ends of the reflector body 120, as shown in FIGS. 7 and 9, folded portions 120b are formed so as to be folded backward. This folded part 1
The end portion 119a of the lens 119 is superposed on the outside of 20b, and the main body cover 117 is further provided on the outside thereof.
The exposed surface 9 is smoothly overlapped with the exposed surface. The folded-back portion 120b extends toward the horizontal rotation shaft 106a and near the shaft.

In the headlight structure having the above structure, when the optical axis is adjusted to make the irradiation direction of the lamp 121 proper, first, the optical axis adjusting bolt 112 (FIG. 3) below the cowling 19 is loosened to adjust the headlight. The entire cowling including 20, is rotated around the horizontal axis 106a to set the optical axis at the optimum position. At this time, the slide piece 111 provided on the cover body 117 slides with respect to the positioning fixing piece 114 on the vehicle body side within the range of the elongated hole 113. When the optical axis is set at the optimum position, the bolt 112 is tightened to fix the mounting angle of the cowling 19, that is, the mounting angle of the headlight. In this case, since the horizontal shaft 106a for rotating the cowling 19 is provided rearward of the lamp 121, the radius of rotation of the lamp becomes large and fine adjustment becomes possible. Further, even when the lamp 121 is arranged in front of the horizontal shaft 106a at a distance from the horizontal shaft 106a , both sides of the reflector body 120 are folded back to the rear.
The folded-back portion 120b reinforces the cover body 117 to secure the rigidity of the cover body 117 and maintain a stable function.

[0034]

As described above, according to the present invention, the cowling and the headlight can be rotated together with the headlight while the mating portion is fixed by fixing the cowling and the headlight to each other. It is maintained at a fixed optimum position without any positional movement, improving the appearance and maintaining stable and high strength. In addition, since both sides of the reflector body are folded back to increase the rearward length, the cowling is reinforced and the rigidity of the cowling is increased, so that the headlight can be moved forward from the horizontal rotation axis at a large distance. It can be arranged. This makes it possible to increase the radius of gyration of the lamp and enable fine adjustment of the optical axis.

If a small slide member is fixed to the cowling side, and a position adjusting portion for sliding contact with the slide member is provided on the handle crown (vehicle body side), and the position is adjusted by bolts for fastening. A simple and inexpensive optical axis adjusting structure can be realized, and the optical axis can be easily adjusted.

Further, particularly by adopting the structure using the multi-reflector, the front lens can be composed of the transparent glass, so that the weight of the lens can be reduced and the flexibility of the shape can be enhanced. Thus, the lens, mosquitoes aspect is greatly curved toward the side surface from the front surface
The mating portion with the wing can be formed into a smoothly continuous curved surface, the appearance of the mating portion can be improved, and the entire shape can be made compact.

[Brief description of drawings]

FIG. 1 is an overall side view of a motorcycle according to the present invention.

2 is a front view of a cowling attachment portion of the motorcycle of FIG. 1. FIG.

FIG. 3 is a vertical sectional view of a cowling portion of the motorcycle shown in FIG.

FIG. 4 is a side view of a headlight of the motorcycle shown in FIG.

5 is a front view of the headlight of the motorcycle of FIG. 1. FIG.

6 is a cross-sectional view taken along the line AA of FIG.

7 is a sectional view taken along line BB of FIG.

8 is a cross-sectional view taken along line CC of FIG.

9 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

1: motorcycle, 2: steering shaft, 3: head pipe, 4: down tube, 5: engine, 15a, 15
b: handle crown, 16: handle, 17: front fork, 18: front wheel, 19: cowling, 20: headlight, 103: upper and lower connecting frame members, 104: left and right connecting frame members, 105: bracket, 106a : horizontal axis, 11
1: slide piece, 112: bolt for optical axis adjustment, 11
3: long hole, 114: positioning fixing piece, 117: cover body, 119: lens, 119a: end of lens, 12
0: reflector body, 120a: receiving part, 120b:
Folded part, 121: Lamp.

Claims (2)

(57) [Claims] 1. A cowling is provided at a front portion of a vehicle body, an opening is provided at a front surface of the cowling, and a headlight including a body for holding a lens and a lamp is fixed to the cowling so that the lens faces the opening. Around the horizontal axis of the entire cowling including the headlights
Rotatably attached to the body side to adjust the optical axis of the lamp
In the possible motorcycle headlight structure, the horizontal axis is provided rearward of the lamp , and the reflection direction is substantially equal to the inner surface of the body of the headlight.
While forming a multi-reflector that aligns in a fixed direction,
The lens is substantially transparent glass and the lens shape is
With a curved surface that greatly curves from the front to the side of the wring
Then , fold back both sides of the body to the rear and move in the horizontal axis direction.
And extend the lens end portion on the outside of the folded portion,
A headlight structure for motorcycles characterized by a smooth cowling on the edge of the lens . 2. A pair of upper and lower handle crowns connecting a pair of left and right front forks, and a support frame member provided between the pair of handle crowns, wherein the horizontal shaft is provided above the support frame members. The headlight structure for a motorcycle according to claim 1, wherein the cowling-side slide member is attached to a lower portion of the support frame member such that the slide member is positionally adjustable.