JPH03132442A - Head lamp for two wheeler - Google Patents

Abstract

PURPOSE:To reduce the number of components by forming a fulcrum part for engaging a hook part provided at a body integrally at the upper end part of a lamp body, as well as forming a bonding part, for holding a nut for a bolt inserted into a groove extended in the longitudinal direction of the body, at the lower end of the lamp body. CONSTITUTION:In a lamp unit 1 formed of a lamp body 2 with a built-in bulb and a lens 3 for covering the front part opening of the lamp body 2, a fulcrum part 7 is integrally formed at the upper end part of the lamp body 2, whereas a nut holding part 8 is integrally formed at the lower end part. The fulcrum part 7 is formed of plural supporting pieces opposed longitudinally so as to engage a body hook 102 protruding downward from the upper part of a cowl 10. The nut holding part 8 is provided with a box body 82 formed integrally at the lower end of a leg part 81 protruding downward, and a nut 83 is enclosed in this box body 82. A bolt 9 inserted into a longitudinal groove 104 provided at the cowl lower face 103 is screwed into the nut 83, thus fixing the lamp body 2 at the cowl 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a headlamp used for a two-wheeled vehicle, and particularly to a headlamp for a two-wheeled vehicle that facilitates vertical aiming adjustment.

[Conventional technology]

Conventionally, various structures have been proposed for adjusting the irradiation angle of a motorcycle headlamp, that is, for aiming adjustment, and an example thereof is shown in FIG. 10. That is, as shown in FIG. 10, which shows a cross-sectional structure of this structure, a headlamp unit 201 is disposed within an opening provided in the front body of a two-wheeled vehicle.
A bracket 202 is provided on a part of the upper side of the vehicle, and this bracket 202 is fixed to a vehicle body 204 with a screw 203. Further, a tongue piece 205 is integrally provided on a portion of the lower side of the headlamp unit 201, and this 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 bias the headlamp unit 201 toward the tip 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, and the headlamp unit 201 is thereby rotated in the vertical direction using the bracket 202 provided on the upper side as a fulcrum. It is possible to adjust the irradiation light in the vertical direction.

[Problem to be solved by the invention]

In a headlamp with such a configuration, the headlamp unit 2
An elastically deformable bracket 202 is attached to the 01, and the bracket 202 is attached to the vehicle body 2 with a screw 203.
It is necessary to fix it to 04. In addition, a tongue piece 205 is attached to the headlamp unit 201 in order to perform aiming adjustment.
It is necessary to attach the supporting piece 206 to the vehicle body 204, and to threadly connect the two with an aiming screw 207.

Therefore, in addition to the headlamp unit l-201, the bracket 202. Screw 203. Tongue piece 205 support piece 2
06. Aiming screw 207. A compression spring 208 is also required, and there is a problem that the number of parts is large. Furthermore, when the headlamp unit 201 is mounted on the vehicle body 204, work is required to attach these parts, resulting in a problem that the number of assembly steps is large and the work is complicated.

An object of the present invention is to provide a headlamp that allows aiming adjustment, reduces the number of component parts, and facilitates assembly.

Another object of the present invention is to provide a headlamp in which aiming adjustment of a headlamp unit can be easily performed and stable light distribution characteristics can be obtained.

[Means for Solving the Problems] A headlamp of the present invention includes a lamp body having a light bulb attached thereto and an inner surface configured as a reflector, and a lens attached to a front opening of the lamp body. The lamp unit has a lamp unit, and the upper end of the lamp unit is integrally provided with a fulcrum part that is engaged with a car body hook provided on the car body.
A nut holder is integrally provided at the lower end to hold a nut into which a bolt inserted from the outside through a groove extending in the longitudinal direction of the vehicle body is screwed. Furthermore, the fulcrum part has an upper bottom surface that comes into contact with the car body hook formed into an arcuate surface with a semicircular cross section, and the nut holding part has a box-like body for holding the nut therein, and the lower surface of the box-like body is formed into an arcuate surface centered on the fulcrum along with the vehicle body surface that comes into contact with it.

In this case, the fulcrum parts are three that are opposed to each other in a ratio of two to one in the front and rear direction.
The upper bottom surface of the opposing side of each support piece is formed into an arcuate surface with a semicircular cross section, and each support piece is positioned horizontally in the horizontal direction along the draft angle of the mold. It is arranged so that it shifts.

In addition, the nut holding part opens the front surface of the box-like body, and has oval grooves cut out from the front and back directions on the top and bottom surfaces of the box-like body, respectively, and the overlapping of these grooves allows the box-like body to be held in place. A bolt insertion hole passing through the lens in the vertical direction is defined, and the front opening is covered by a cover portion integrally provided with the lens.

[Effect]

According to this configuration, the fulcrum part to which the hook part provided on the car body is engaged is formed at the upper end of the lamp body, and the lower end is inserted from the outside through a groove extending in the longitudinal direction of the car body. Since the nut holder is formed to hold the nut into which the bolt is screwed, the number of component parts can be reduced and assembly can be performed easily.

Furthermore, since the fulcrum part provided at the upper end of the lamp body is in contact with the car body hook provided on the car body through an arc surface, even when the lamp body rotates, stress will not build up in the fulcrum part and cause damage. This 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, the generation of dust due to wear of both is prevented.

In addition, the fulcrum part and the nut holding part are configured so that they can be punched and molded in the front and rear directions, and can be molded integrally with the resin molding of the lamp body, reducing the number of parts and making assembly easy. shall be.

〔Example] Next, the present invention will be explained with reference to the drawings.

Fig. 1 is a partially cutaway perspective view of one implementation side of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a sectional view taken along line 'l-A of Fig. FIG. 3 is a sectional view taken along line BB in the figure.

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

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

Further, a short cylindrical metal socket fixture 4 is fitted into the sleeve 23 at the rear end of the lamp body 2, and the light bulb 5 is supported by the socket fixture 4. That is, the socket fixture 4 integrally has a small-diameter fitting portion 41 at its front end, and this fitting portion 41 is press-fitted into the rear opening 22 of the lamp body 2.

Then, a flange 52 approximately equal to the inner diameter of the socket fixture 4 is integrally provided on the base 51 of the light bulb 5, and this flange 52 is brought into contact with the rear surface of the fitting part 41 of the socket fixture 4, and then It is supported by a socket holder 6 fitted on the side. This socket holder 6 uses an insulator 6 using a compression spring 61.
This insulator 62 is provided with an electrode 63 that comes into contact with the cap 51 of the light bulb 5, and a cord 64 connected to the vehicle power source is connected to the insulator 62.

This socket holder 6 is attached to the socket fixture 4 by fitting protrusions 65 provided at multiple locations on the circumference into J-shaped notches 42 provided at multiple locations on the circumference of the socket fixture 4. In this state, the compression spring 61
The insulator 62 and the light bulb 5 are brought into electrical contact by the elastic force.

On the other hand, around the front opening 21 of the lamp body 2, a peripheral protrusion 2 for attaching a lens protrudes in the outer diameter direction.
4, and the circumferential left and right 2 of this peripheral protrusion 24
Engagement support portions 25 having narrow slots are formed at certain locations. The lens 3 formed in the shape of a cylindrical container is placed over the front part of the lamp body 2. In this lens 3, a stepped portion 3a provided at the opening edge is brought into contact with the peripheral protrusion 24 so as to be brought into close contact with the lamp body 2, while hook-shaped engaging protrusions 31 are provided at two locations on the left and right sides of the periphery, respectively. The engagement protrusion 31 is inserted into the groove of the engagement support part 25 to engage them, and through this engagement, the lens 3 is fitted into the lamp body 2 and integrated.

Furthermore, a fulcrum part 7 is integrally formed at the upper end of the lamp body 2, and a NAND holding part 8 is integrally formed at the lower end.

As shown in the main part perspective view in No. 5-1, the fulcrum part 7 has an upper part of the peripheral protrusion 24 slightly protruding rearward, and is opposed to this protruding part in a 2:1 ratio in the front-rear direction. do 3
Two supporting pieces 71, 72, and 73 are integrally erected. These supporting pieces 71, 72, and 73 each have an upper base surface formed as a ]/4 arcuate surface, and as a result, the overall cross-sectional shape of the upper base surface 74 is configured as a semicircle.

Also, each supporting piece? 1. 72. The planar arrangement of 73 is
They are set so that they do not overlap in the left-right direction, and the lines connecting the sides of the front support pieces 71 and 72 and the rear support pieces 73 form an angle corresponding to the mold cutting slope of resin molding. ing.

On the other hand, as shown in a perspective view of the main part in FIG. A box-shaped body 82 is integrally formed at the lower end.

This box-like body 82 has an opening 82a on the front side, and a rectangular plate-shaped nut 83 can be housed inside through this opening 82a. Further, the lower surface of the box-shaped body 82 has a central portion so as to form an arcuate surface along an arc approximately centered on the center 0 of the semicircle constituting the bottom surface of the fulcrum portion 7 (see FIG. 6). The cross-sectional shape is slightly bulged toward the bottom. On the upper and lower surfaces of the box-like body 82, there are cutouts 8485 cut out in an oval shape from the rear and front, respectively.
These notches 84 and 85 overlap each other to define a circle in the approximate center of the box-like body 82, and a bolt insertion hole 8G that vertically passes through the box-like body 82 is formed in this overlapping portion. It consists of This insertion hole 8
6, an aiming port 9, which will be described later, is inserted from the bottom to the top.

Moreover, so as to face the opening 82a of this box-like body 82,
A portion of the lower circumference of the lens 3 is made to protrude rearward in a cross-sectional shape 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-like body 82 and the opening 8
2a can be closed to prevent the nut 83 housed in the box-like body 82 from falling off.

1 2 The lamp unit 1 configured in this manner is attached to a cowl 10 provided at the front of the vehicle body of a two-wheeled vehicle.

This cowl 10 is formed with an opening 101 in which the lamp unit 1 is housed, and the lamp unit 1 is disposed within this opening Lot, and the -1 end and the lower end of the lamp body 2 are supported by the cowl lO. I'm letting you do it. That is, at the upper part of the cowl 10, a vehicle body hook 102 that projects downward is formed integrally with the cowl 10.
02 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 car body hook 102 has a lower end surface 102a formed in a semicircular cross section,
This lower end surface 102a is connected to the support pieces 71 and 72 of the fulcrum part 7
3, and is 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 is supported by the upper bottom surface 74 of the fulcrum portion 7.
By contacting the lower end surface 102a of the vehicle body hook 102 with each other at an arcuate surface, the lower end portion of the lamp body 2 can be moved in the front-rear direction using the bottom surface 74 of the fulcrum portion 7 as a fulcrum.

On the other hand, the lower surface 103 of the cowl 10 is configured as an arcuate surface similar to the lower surface of the box-shaped body 82 of the nut holding part 8, as shown in FIG. The two nut holding parts 8 can be moved in the front and rear directions. A groove 104 is formed in the lower surface 103 in the front-rear direction, and the aiming bolt 9 is inserted into the groove 104 from the outside of the cowl 10, and the aiming port 9 is inserted through the insertion hole 86 of the box-like body 82. It is screwed into a nut 83 housed in a box-like body 82. Therefore, when the bolt 9 and nut 83 are fastened, the box-shaped body 82 is brought into pressure contact with the lower surface 103 by the fastening force, and the lamp body 2 can be fixedly supported by the cowl 10.

According to the above configuration, when adjusting the aiming of the lamp unit 1, the bolt 9
Loosen the nut holding part 8 and attach it to the cowl 1 as shown in the same figure (b).
By moving the lamp body 2 forward by 3 4 along the lower surface 103 of the lamp body 2, the lower part of the lamp body 2 is moved forward, and the lamp body 2 is rotated upward about the fulcrum part 7. Of course, adjustment in the opposite direction is also possible, and thereby vertical aiming can be performed. After the aiming adjustment is made, the port 9 is fastened to fix the NAND holding portion 8 to the lower surface 103 of the cowl 0, and the lamp unit 1 is fixed again.

When adjusting this aiming, the support piece 7 at the fulcrum part 7
The upper bottom surface 74 between 1, 72, and 73 has a semicircular cross section, and the lower end surface 102a of the car body hook 102 secured thereto also has a semicircular cross section, so that the vertical rotation of the lamp body 2 is smooth. This prevents excessive force from being applied to this part and prevents damage to it.

In addition, when adjusting the aiming, since the lower surface of the box-shaped body 82 of the nut holding section 8 and the lower surface 103 of the cowl 10 are each formed into an arcuate surface centered on the fulcrum section 7, the nut I/holding section 8 is The sliding operation on the lower surface 103 of the cowl 10 is made smoother, making it possible to easily adjust the aiming, and generating dust due to wear between the nut holding part 8 and the lower surface 1o3 of the cowl 10. prevent.

Furthermore, in the lamp body 2 having this configuration, the supporting pieces 71, 72, 73 of the fulcrum part 7 do not overlap in the left-right direction, and each side of the front supporting piece 71, 72 and the rear supporting piece 73 The lines connecting the sides are arranged in a plane at an angle corresponding to the mold cutting slope of the resin molding. , oblong notches B4 and 85 are provided from the rear and front, respectively, and an insertion hole 86 that vertically penetrates the box-like body 82 is formed at the overlapping portion thereof. For this reason, as shown in FIG. 9, the fulcrum part 7 and the nut holding part 8 are resin-molded integrally with the lamp body 2 using molding molds x and Y that are formed separately in the front and back direction. The fulcrum part 7. There is no need to use a special slide mold to mold the nut holding portion 8, and the molding can be easily performed. Moreover, since there is no need to configure the fulcrum part 7 and the nut holding part 8 as separate parts, multiple parts such as conventional brackets, tongue pieces, support pieces, etc. are not required, reducing the number of parts and making assembly easier. This makes it possible to simplify the work.

(Effects of the Invention) As explained above, the present invention has a fulcrum part that is integrally formed at one end of the lamp body with which a hook part provided on the car body is engaged, and a lower end that is connected to the fulcrum part in the longitudinal direction of the car body. Since a nut holder is formed to hold a nut into which a bolt inserted from the outside is screwed through the extended groove, the number of component parts can be reduced and assembly can be performed easily. A fulcrum is provided at the upper end and is in contact with the car body hook provided on the car body through an arc surface, so even when the lamp body rotates, stress will not be generated on the fulcrum and damage will occur, and the lamp body will remain stable. In addition, since the nut holding part and the lower surface of the car body are each formed into an arcuate surface, the rotation of the lamp body is made even smoother, and at the same time, dust caused by abrasion of both parts is prevented. This prevents this from occurring.As a result, aiming adjustments can be made easily.
Moreover, it becomes possible to stabilize the light distribution characteristics.

Further, the fulcrum part and the NAND holding part can be molded in resin integrally with the lamp body, which reduces the number of parts and facilitates assembly. Furthermore, this molding can be performed using a mold with a simple configuration, and manufacturing can be performed easily.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of one implementation side of the headlamp of the present invention;
Figure 2 is a front view of the headlight in Figure 1, Figure 3 is A in Figure 2.
- A cross-sectional view taken along line A, Figure 4 is a cross-sectional view taken along line B-B in Figure 2, Figure 5 is an exploded perspective view of the fulcrum and the car body hook, and Figure 6 shows the relationship between the fulcrum and the car body hook. FIG. 7 is a partially exploded perspective view showing the nut holding part and its surroundings. FIGS. 8(a) and (b) are the nut holding part and its surroundings showing the aiming adjustment operation. FIG. 9 is a cross-sectional view illustrating a mold for molding a lamp body, and FIG. 10 is a cross-sectional view showing an example of a conventional headlamp with adjustable aiming. ■... 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 protrusion, 25 ... Engagement support part, 31 ... Cover part, 51 ...
...1" Gold, 52...Flange, 61...Compression spring, 62...Insulator, 71,72.73
...Support piece, 74...-1-bottom, 81... Leg, 82... Item, 83... Nut, 84.85.
... Notch, 86 ... Insertion hole, 101 ... Opening, 1
02... Vehicle body hook, 103... Lower surface, 104.
・Groove, 201 ・Headlamp unit, 202・
...Bracket, 203...Screw, 204...
- Vehicle body, 205... Tongue piece, 206... Support piece, 20
7... Aiming screw, 208... Compression spring. 9

Claims (1)

[Claims] 1. A lamp unit comprising a lamp body having a light bulb attached thereto and an inner surface configured as a reflector, and a lens attached to a front opening of the lamp body. The upper end of the unit is integrally provided with a fulcrum part that engages with a car body hook provided on the car body, and the lower end is screwed with a bolt inserted from outside the car body through a groove extending in the longitudinal direction of the car body. A headlamp for a two-wheeled vehicle, characterized in that a nut holding part for holding a nut is integrally provided, and the lower surface of the nut holding part is formed into an arcuate surface centered on the fulcrum part, together with the vehicle body surface that comes into contact with the nut holding part. 2. The headlamp for a two-wheeled vehicle according to claim 1, wherein the fulcrum portion has an upper bottom surface that contacts the vehicle body hook formed into an arcuate surface having a semicircular cross section. 3. The fulcrum part is composed of three supporting pieces that face each other in a 2:1 ratio in the front-rear direction, and the upper bottom surface of the opposing side of each supporting piece is formed into an arcuate surface with a semicircular cross section, and each supporting piece 3. A headlamp for a two-wheeled vehicle according to claim 2, wherein the pieces are arranged so that their horizontal plane positions are shifted along the draft angle of the molding die. 4. The headlamp for a two-wheeled vehicle according to any one of claims 1 to 3, wherein the nut holding part is formed into a box-like body, and the nut is held inside the box-shaped body. 5. The nut holding part opens the front surface of the box-like body, and has oval grooves cut out from the front and back directions on the top and bottom surfaces of the box-like body, respectively, and the overlapping of these grooves allows the box-like body to A headlamp for a two-wheeled vehicle according to claim 4, which defines a bolt insertion hole passing through the lens in the vertical direction, and the front opening is covered by a cover portion integrally provided with the lens.