JPH0657514B2 - Motorcycle headlights - Google Patents

Description

TECHNICAL FIELD The present invention relates to a headlight used for a motorcycle, and more particularly to a headlight for a motorcycle that facilitates vertical aiming adjustment thereof.

[Conventional technology]

Conventionally, various structures have been proposed as a structure for adjusting an irradiation angle of a motorcycle headlight, that is, an aiming adjustment, and an example thereof is shown in FIG. That is, in FIG. 10, as shown in the sectional structure of this structure, the headlamp unit 201 is arranged in the opening provided in the front vehicle body of the two-wheeled vehicle.
A bracket 202 is provided on a part of the upper side of 1, and the bracket 202 is fixed to a vehicle body 204 with a screw 203. Further, a tongue piece 205 is integrally provided on a part of the lower side of the headlamp unit 201, and the tongue piece 205 and a screw support piece 206 attached to the vehicle body 204 are screwed together by an aiming screw 207.

A compression spring 208 is interposed in the aiming screw 207 to urge the headlamp unit 201 toward the tip side of the aiming screw 207.

In this configuration, when the aiming screw 207 is rotated, the tongue piece 205 is moved in the axial direction of the aiming screw 207, whereby the headlamp unit 201 is rotated in the vertical direction with the bracket 202 provided on the upper side as a fulcrum. The irradiation light can be adjusted in the vertical direction.

[Problems to be Solved by the Invention]

In the headlamp having such a configuration, the headlamp unit 2
01, an elastically deformable bracket 202 is attached, and the bracket 202 is attached to the vehicle body 2 with a screw 203.
It is necessary to fix it to 04. Further, in order to perform aiming adjustment, the tongue piece 205 is attached to the headlamp unit 201.
It is necessary to attach the support pieces 206 to the vehicle body 204, and screw them together with the aiming screw 207.

Therefore, in addition to the headlamp unit 201, the bracket 202, the screw 203, the tongue piece 205, the support piece 2
06, aiming screw 207, and compression spring 208 are required, and there is a problem that the number of parts is large. In addition, when the headlamp unit 201 is mounted on the vehicle body 204, a work for attaching these parts is required, which requires a large number of assembling steps and is complicated.

It is an object of the present invention to provide a headlight that enables aiming adjustment while reducing the number of constituent parts and easily assembling the headlight.

Another object of the present invention is to provide a headlight that can easily perform aiming adjustment of a headlamp unit and can obtain stable light distribution characteristics.

[Means for Solving the Problems]

The headlamp of the present invention has a lamp unit configured by a lamp body to which a light bulb is attached and whose inner surface is configured as a reflector, and a lens attached to a front opening of the lamp body, A fulcrum part that is engaged with a vehicle body hook provided on the vehicle body is integrally provided on the upper end portion of the lamp unit,
The lower end portion is integrally provided with a nut holding portion that holds a nut into which a bolt inserted from the outside through a groove extending in the front-rear direction of the vehicle body is screwed. Further, the fulcrum portion has an upper bottom surface which comes into contact with the vehicle body hook and has an arc surface having a semicircular cross section, and the nut holding portion has a box-shaped body for holding a nut therein, and the lower surface of the box-shaped body. Is formed in an arcuate surface centered on the fulcrum with the surface of the vehicle body contacting it.

In this case, the fulcrum parts are opposed to each other in the front-back direction by 2: 1.
It consists of one support piece, the upper bottom surface on the side where each support piece faces is formed into an arc surface with a semicircular cross section, and each support piece has a horizontal position along the draft of the molding die. They are arranged so that they are misaligned.

Further, the nut holding portion opens the front surface of the box-shaped body, and forms oval grooves cut out from the front-back direction on the upper surface and the lower surface of the box-shaped body, and the box-shaped body is formed by overlapping these grooves. And a bolt insertion hole penetrating therethrough in the vertical direction is defined, and an opening on the front surface is covered with a cover portion provided integrally with the lens.

[Action]

According to this structure, the fulcrum portion with which the hook portion provided on the vehicle body is engaged is integrally formed on the upper end portion of the lamp body, and the lower end is inserted from the outside through the groove extending in the front-rear direction of the vehicle body. Since the nut holding portion for holding the nut with which the bolt is screwed is formed, the number of constituent parts can be reduced and the assembly can be easily performed.

Furthermore, since the fulcrum portion provided on the upper end of the lamp body is in contact with the vehicle body hook provided on the vehicle body on the arcuate surface, stress does not occur at the fulcrum portion even when the lamp body is rotated, and the lamp body is not damaged. It also enables the lamp body to move smoothly. Further, since the nut holding portion and the lower surface of the vehicle body are each formed into an arcuate surface, the rotation of the lamp body is made smoother, and at the same time, dust is prevented from being generated due to wear of both.

In addition, the fulcrum part and the nut holding part each have a structure capable of being punched out in the front-rear direction, and can be integrally molded with the lamp body during resin molding, reducing the number of parts and facilitating assembly thereof. And

〔Example〕

 Next, the present invention will be described with reference to the drawings.

1 is a partially cutaway perspective view of an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a sectional view taken along line AA of FIG.
FIG. 4 is a sectional view taken along the line BB of FIG.

In these figures, the lamp unit 1 has a lamp body 2 and a lens 3 fitted therein. The lamp body 2 is formed in a cylindrical shape, the front end of which is formed as a front opening 21 which is slightly inclined upward, the rear portion of which is curved in a parabolic shape, and the rear end of which is a rear portion for mounting a light bulb. An opening 22 is opened, and an arc-shaped sleeve 23 for mounting a light bulb is formed so as to surround the upper half of the rear opening 22, and is integrally formed by resin molding.

Further, the inner surface 2a of the lamp body 2 is configured as a reflector, and is subjected to surface treatment such as plating for increasing the light reflectance.

Further, a short-cylindrical metal socket fixture 4 is fitted and attached inside the sleeve 23 at the rear end of the lamp body 2, and the socket fixture 4 supports the light bulb 5. That is, the socket fixture 4 integrally has a small-diameter fitting portion 41 at the front end portion, and the fitting portion 41 is press-fitted into the rear opening 22 of the lamp body 2.
A flange 52, which is approximately the same as the inner diameter of the socket fixture 4, is integrally provided on the base 51 of the light bulb 5, and the flange 52 is abutted against the rear surface of the fitting portion 41 of the socket fixture 4 and at the rear side thereof. It is supported by the fitted socket holder 6. This socket holder 6 uses the compression spring 61 for the insulator 6
2, an insulator 62 is provided with an electrode 63 that comes into contact with the base 51 of the light bulb 5, and a cord 64 that is connected to the vehicle power supply is connected to the insulator 62.

This socket holder 6 is attached to the socket fixture 4 by fitting projecting pieces 65 provided at a plurality of locations on its circumference into J-shaped notches 42 provided at a plurality of locations on the circumference of the socket fixture 4. Yes, in this state the compression spring 61
Insulator 62 and electric bulb 5 are electrically contacted by the elastic force of.

On the other hand, in the vicinity of the front opening 21 of the lamp body 2, a peripheral projection 2 for lens attachment protruding in the outer diameter direction is provided.
4 are integrally formed, and the circumferential left and right sides of the circumferential ridge 24 are 2
Engagement support portions 25 having thin slots are formed at the positions. Then, the lens 3 formed in the shape of a cylindrical container is covered so as to cover the front side portion of the lamp body 2. In this lens 3, a step portion 3a provided at an opening edge is brought into contact with the peripheral projection 24 to be in close contact with the lamp body 2, and hook-shaped engaging projections 31 are provided at two places on the right and left sides of the peripheral portion, respectively. The engagement protrusion 31 is used as the engagement support portion 25.
The two are engaged by being fitted in the groove hole of the above, and the lens 3 is fitted and integrated with the lamp body 2 by this engagement.

Further, a fulcrum portion 7 is integrally formed on the upper end portion of the lamp body 2, and a nut holding portion 8 is integrally formed on the lower end portion.

As shown in the perspective view of the main part of FIG. 5, the fulcrum part 7 projects a part of the upper side of the peripheral ridge 24 rearward, and opposes the projected part 2 to 1 in the front-rear direction. Two support pieces 71, 72, 73 are erected integrally. These support pieces 71, 72, 73 are 1/4 each on the upper bottom surface between the facings.
It is configured as an arc surface, and as a result, the overall cross-sectional shape of the upper bottom surface 74 is configured as a semicircle. In addition, the planar arrangement of the support pieces 71, 72, 73 does not overlap each other in the left-right direction, and the line connecting the side edges of the front support pieces 71, 72 and the rear support piece 73 is a resin. The angle is set so as to correspond to the die-cutting gradient of molding.

On the other hand, the nut holding portion 8 is provided with a leg portion 81 projecting slightly rearward on a lower part of the peripheral projection 24 as shown in a perspective view of a main portion of FIG. A box-shaped body 82 is integrally formed at the lower end.

The box-shaped body 82 has an opening 82a formed on the front side, and a rectangular plate-shaped nut 83 can be housed inside through the opening 82a. Further, the lower surface of the box-shaped body 82 is an arc surface along a circular arc having a center O (see FIG. 6) of the semicircle forming the upper bottom surface of the fulcrum portion 7 as a center.
The cross-sectional shape is such that the central portion is slightly inflated downward. Then, on the upper surface and the lower surface of the box-shaped body 82, notches 84 and 85 cut out in an elliptical shape from the rear and the front, respectively.
The notches 84 and 85 are overlapped with each other so as to define a circle at a substantially central portion of the box-shaped body 82, and a bolt insertion hole 86 that vertically penetrates the box-shaped body 82 is formed at the overlapping portion. I am configuring. Aiming bolt 9 described later is inserted through this insertion hole 86 from the lower side to the upper side.

In addition, as opposed to the opening 82a of the box-shaped body 82,
A part of the lower circumference of the lens 3 is projected rearward in an L-shaped cross section to form a cover portion 32. When the lens 3 is fitted to the lamp body 2 as described above, the cover portion 32 comes into contact with the front surface of the box-shaped body 82 and opens the opening 8.
It is possible to block 2a and prevent the nut 83 housed in the box-shaped body 82 from falling off.

The lamp unit 1 thus configured is attached to the cowl 10 provided at the front part of the vehicle body of the two-wheeled vehicle. This cowl 1
At 0, an opening 101 for housing the lamp unit 1 is formed. The lamp unit 1 is arranged in the opening 101, and the upper end and the lower end of the lamp body 2 are supported by the cowl 10, respectively. That is, a vehicle body hook 102 protruding downward is integrally formed with the cowl 10 on the upper portion of the cowl 10, and the vehicle body hook 102 is engaged with a fulcrum portion 7 provided on the lamp body 2. As shown in a partially cutaway side view in FIG. 6, this vehicle body hook 102 has a lower end surface 102a formed in a semicircular cross section, and this lower end surface 102a is placed between the support pieces 71, 72 and 73 of the fulcrum portion 7. It is inserted and brought into contact with the arcuate upper bottom surface 74. Therefore, the upper end portion of the lamp body 2 is supported by the cowl 10, that is, the vehicle body by the engagement between the fulcrum portion 7 and the vehicle body hook 102, and the lamp body 2 has the upper bottom surface 74 of the fulcrum portion 7 and the lower end surface 102a of the vehicle body hook 102. When and are in contact with each other in an arc surface, the upper bottom surface 74 of the fulcrum portion 7 is used as a fulcrum,
The lower end of the lamp body 2 can be moved in the front-back direction.

On the other hand, as shown in FIG. 7, the lower surface 103 of the cowl 10 is configured as an arc surface similar to the lower surface of the box-shaped body 82 of the nut holding portion 8, and the lamp body extends along the lower surface 103. The second nut holding portion 8 can be moved in the front-back direction. Then, a groove 104 is formed in the lower surface 103 in the front-rear direction, the aiming bolt 9 is inserted into the groove 104 from the outside of the cowl 10, and the aiming bolt 9 is inserted through the insertion hole 86 of the box-shaped body 82. The nuts 83 housed in the box-shaped body 82 are screwed together. Therefore, if the bolt 9 and the nut 83 are fastened, the box-shaped body 82 can be pressed against the lower surface 103 by this fastening force, and the lamp body 2 can be fixedly supported by the cowl 10.

According to the above configuration, when the aiming adjustment of the lamp unit 1 is performed, the bolt 9 is loosened from the state shown in FIG. 8 (a), and the nut holding portion 8 is attached to the cowl 10 as shown in FIG. 8 (b). By moving the lamp body 2 forward along the lower surface 103, the lower portion of the lamp body 2 is moved in the forward direction, and the lamp body 2 is rotated upward about the fulcrum portion 7. Of course, adjustment in the opposite direction is also possible, which allows aiming in the vertical direction. After the aiming adjustment is performed, the nut holding portion 8 is fixed to the lower surface 103 of the cowl 10 by fastening the bolt 9, and the lamp unit 1 is fixed again.

At the time of this aiming adjustment, the fulcrum portion 7 supports the support piece 7
Since the upper bottom surface 74 between 1, 72 and 73 has a semicircular cross section, and the lower end surface 102a of the vehicle body hook 102 engaged with this has a semicircular cross section, the vertical rotation of the lamp body 2 is smooth. Therefore, it is possible to prevent unreasonable force from being applied to this portion and prevent the damage.

Further, when adjusting the aiming, the lower surface of the box-shaped body 82 of the nut holding portion 8 and the lower surface 103 of the cowl 10 are formed in an arcuate surface with the fulcrum portion 7 as a center. The lower surface 103 of the lower part 103 facilitates the sliding operation and facilitates the aiming adjustment, and prevents the generation of dust due to the wear between the nut holding portion 8 and the lower surface 103 of the cowl 10. To do.

Further, in the lamp body 2 in this configuration, the support pieces 71, 72, 73 of the support portion 7 do not overlap in the left-right direction, and moreover, the support pieces 71, 72 on the front side and the support piece 73 on the rear side are not overlapped. The line connecting the sides is arranged in a plane at an angle corresponding to the die-cutting gradient of the resin molding. In the nut holding portion 8, an opening 82a is provided on the front surface of the box-shaped body 82, and on the upper surface and the lower surface of the box-shaped body 82. The cutouts 84 and 85 cut out in the shape of an ellipse are provided from the rear side and the front side, respectively, and an insertion hole 86 that vertically penetrates the box-shaped body 82 is formed at the overlapping portion. For this reason, as shown in FIG. 9, the support part 7 and the nut holding part 8 are integrally resin-molded with the lamp body 2 by using molding dies X and Y which are separately formed in the front-rear direction. Therefore, it is not necessary to use a special slide mold for molding the fulcrum portion 7 and the nut holding portion 8, and the molding can be easily performed. Moreover, since it is not necessary to form the fulcrum portion 7 and the nut holding portion 8 as separate parts, a plurality of parts such as a bracket, a tongue piece, and a support piece as in the prior art are not necessary, and the number of parts is reduced to assemble the parts. It is possible to simplify the work.

〔The invention's effect〕

As described above, according to the present invention, the fulcrum portion with which the hook portion provided on the vehicle body is engaged is integrally formed on the upper end portion of the lamp body, and the lower end is externally passed through the groove extending in the front-rear direction of the vehicle body. Since the nut holding portion for holding the nut with which the bolt to be inserted is screwed is formed, the number of constituent parts can be reduced and the assembly can be easily performed. Furthermore, since the fulcrum portion is provided at the upper end of the lamp body and is in contact with the vehicle body hook provided on the vehicle body on the arcuate surface, stress does not occur at the fulcrum portion even when the lamp body is rotated, and damage is not caused. In addition, it enables smooth movement of the lamp body. Further, since the nut holding portion and the lower surface of the vehicle body are each formed into an arcuate surface, the rotation of the lamp body is made smoother, and at the same time, dust is prevented from being generated due to wear of both. As a result, the aiming adjustment can be easily performed, and the light distribution characteristics can be stabilized.

Further, the fulcrum portion and the nut holding portion can be molded by resin integrally with the lamp body, so that the number of parts can be reduced and the assembling thereof can be facilitated. Further, also in this molding, it is possible to mold using a mold having a simple structure, and the manufacturing can be easily performed.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the headlight of the present invention,
FIG. 2 is a front view of the headlight of FIG. 1, and FIG. 3 is A of FIG.
-A sectional view taken along the line A, Fig. 4 is a sectional view taken along the line BB in Fig. 2, Fig. 5 is an exploded perspective view of the fulcrum portion and the vehicle body hook, and Fig. 6 is a relationship between the fulcrum portion and the vehicle body hook. Fig. 7 is a partially exploded side view showing the relationship between the nut holder and its surroundings, and Figs. 8 (a) and 8 (b) are nut holders and their surroundings showing the aiming adjustment operation. 9 is a sectional view of a portion, FIG. 9 is a sectional view illustrating a mold for molding a lamp body, FIG.
FIG. 1 is a sectional view showing an example of a conventional heading lamp with adjustable aiming. 1 ... Lamp unit, 2 ... Lamp body, 3 ... Lens, 4 ... Socket fixture, 5 ... Light bulb, 6 ...
Socket holder, 7 ... fulcrum part, 8 ... Nut holding part, 9 ... Aiming bolt, 10 ... Cowl, 23 ...
… Sleeve, 24 …… Surrounding ridge, 25 …… Engagement support,
31 ... Cover part, 51 ... Clasp, 52 ... Flange,
61 ... Compression spring, 62 ... Insulator, 7
1, 72, 73 ... Support piece, 74 ... Upper bottom surface, 81 ...
Legs, 82 ... Box body, 83 ... Nuts, 84, 85 ...
… Notches, 86… Insertion holes, 101… Openings, 102…
… Body hook, 103 …… bottom surface, 104 …… groove, 20
1 ... Headlamp unit, 202 ... Bracket,
203 ... Screw, 204 ... Car body, 205 ... Tongue piece, 206 ... Support piece, 207 ... Aiming screw, 208 ... Compression spring.

Claims (5)

[Claims] 1. A lamp unit comprising a lamp body to which a light bulb is attached and whose inside surface is used as a reflector, and a lens attached to a front opening of the lamp body, the upper end of the lamp unit. A fulcrum part that engages with a vehicle body hook provided on the vehicle body is integrally provided on the part, and a nut to which a bolt inserted from the outside of the vehicle body is screwed is held at a lower end portion through a groove extending in the front-rear direction of the vehicle body. The headlamp for a motorcycle according to claim 1, wherein a nut holding portion is integrally provided, and a lower surface of the nut holding portion is formed into an arcuate surface centering on the fulcrum portion together with a vehicle body surface contacting the nut holding portion. 2. The headlamp for a motorcycle according to claim 1, wherein the fulcrum portion has an upper bottom surface which comes into contact with the vehicle body hook and has an arc surface having a semicircular cross section. 3. The fulcrum portion is composed of three supporting pieces facing each other in the front-rear direction in a two-to-one direction, and the upper bottom surface on the side facing each supporting piece is formed into an arc surface having a semicircular cross section, The headlamp for a motorcycle according to claim 2, wherein each of the support pieces is arranged so that the planar position in the left-right direction is displaced along the draft of the molding die. 4. The motorcycle headlight according to any one of claims 1 to 3, wherein the nut holding portion is formed in a box-like body, and holds the nut inside thereof. 5. The nut holding portion opens on the front surface of the box-shaped body,
In addition, the upper and lower surfaces of the box-shaped body are formed with oval grooves cut out from the front-rear direction, and the overlapping of these grooves defines a bolt insertion hole that penetrates the box-shaped body in the vertical direction, and the front surface. The motorcycle headlamp according to claim 4, wherein the opening of the lens is covered by a cover portion integrally provided with the lens.