JPH0731452Y2 - Supporting structure for adjusting screws in an illumination angle adjusting device for vehicle headlights - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The support structure of the adjusting screw in the irradiation angle adjusting device for a vehicle headlamp according to the present invention will be described in detail according to the following items.

A. Industrial fields of use B. Outline of the device C. Prior art [Figs. 16 to 19] D. Problems to be solved by the device [Figs. 16 to 19] E. To solve the problems Means F. Embodiment [Figs. 1 to 15] a. Outline of automobile headlight [Figs. 1 to 4] b. Adjustment screw [Figs. 3 to 5] c. Fastener [ 3 to 8] d. Support of adjusting screw to lamp body [Fig. 3 to 5]
Fig.] E. Action f. Modified example of fastener [Figs. 9 to 12] g. Another embodiment [Figs. 13 to 15] G. Effect of device (A. Industrial application field) The present invention relates to a support structure for an adjusting screw in a novel vehicle headlamp irradiation angle adjusting device. Specifically, a tilting member whose irradiation angle is changed by tilting is tiltably supported by a synthetic resin body, and a tip of an adjusting screw rotatably supported by the body is supported by the tilting member. In a structure for supporting an adjusting screw in an irradiation angle adjusting device for a vehicle headlamp, in which a tilting member is tilted by being screwed into a member and rotating the adjusting screw, the strength of a supporting portion of the adjusting screw and the waterproofing are improved. It is an object of the present invention to provide a support structure for an adjusting screw in a novel irradiation angle adjusting device for a vehicle headlight, which can improve the property.

(B. Outline of the device) The support structure of the adjusting screw in the irradiation angle adjusting device of the vehicle headlamp of the present invention is such that the adjusting screw is inserted into the insertion hole formed in the body and adjusted with the flange portion formed in the adjusting screw. The adjusting screw is rotatably supported by the body while holding the body with an annular synthetic resin fastener attached to the screw, and is formed over the entire circumference at one opening edge of the body insertion hole. Most of the O-ring is inserted in the notch, a metal washer is inserted between the fastener and the body, and the fastener is a protrusion protruding outward from the outer edge of the fastener at evenly spaced positions. Since a slit extending in the radial direction from the inner edge corresponding to these protrusions was formed and the fastener was brought into contact with the metal washer, the snugness between the synthetic resin fastener and the body was improved, and the adjustment screw Occasionally, high frictional heat is not generated on the fasteners and bodies, and these are not deformed or damaged, which improves the strength of this part, and the O-ring is a notch formed at one opening edge of the insertion hole. Since most of it is fitted inside, the compression allowance of the O-ring is determined only by the size of the notch and the thickness of the O-ring, and the dimensional accuracy of the other components does not affect the waterproofness. Water resistance can be obtained. Furthermore, 4 for fasteners
Since the three projecting pieces are formed and are in contact with the body through the metal washer, the adjusting screw is less likely to be tilted with respect to the body, and thus the optical axis can be prevented from moving during traveling.

(C. Prior Art) [FIGS. 16 to 19] FIGS. 16 to 19 show an example of a supporting structure of an adjusting screw in a conventional irradiation angle adjusting device for a vehicle headlamp.

Reference character a is a synthetic resin body, and reference character b is an insertion hole formed in the body a. Then, shallow recesses c and d are formed in the inner and outer surfaces of the body a where the insertion holes b are opened.

Reference numeral e is an adjusting screw, which has a screw shaft portion f, a flange portion g, and an annular groove h.

i is a fastener made of synthetic resin, which has a substantially annular shape, and projecting pieces j, j, j project outwardly from three locations on the outer peripheral edge of the fastener spaced apart at equal intervals. Further, slits k, k, k extending in the radial direction are formed in the inner edge of the fastener i at locations corresponding to the protrusions j, j, j. Incidentally, the inner diameter of the fastener i is slightly smaller than the outer diameter of the portion behind the groove h of the adjusting screw e, and the diameter of the circle circumscribing the tips of the projecting pieces j, j, j is that of the recess d formed on the body a. It is smaller than the diameter.

Then, the adjusting screw e is inserted into the insertion hole b of the body a,
The flange portion g is located in the recess c. At this time, the sliding washer 1 and the O-ring m are externally fitted to the adjusting screw e, the sliding washer 1 contacts the flange portion g, and the O-ring m is inserted between the sliding washer 1 and the body a.

The fastener i is externally fitted to the portion of the adjusting screw e protruding to the outside of the body a and moved at the position of the groove h. Although the inner diameter of the fastener i is slightly smaller than the outer diameter of the portion behind the groove h of the adjusting screw e, the elasticity and slit k of the material,
Since it bends due to k, k, it can be fitted onto the adjusting screw e and moved to the groove h. When the fastener i enters the groove h, the rear portion of the inner edge of the fastener i makes elastic contact with the rear surface of the groove h, and the front surface of the fastener i contacts the body a.

As described above, the adjusting screw e is rotatably supported by the body a so as to sandwich the body a by the flange portion g and the fastener i, and the O-ring m is provided between the body a and the sliding washer l. It is compressed by and the waterproof between the body a and the adjusting screw e is achieved.

Incidentally, n is a reflecting mirror, o is a nut member supported by the reflecting mirror n, and the screw shaft portion f of the adjusting screw e is screwed into the nut member o.

(D. Problems to be solved by the device) [Figs. 16 to 19
[Fig.] By the way, in the supporting structure of the adjusting screw in the above-mentioned conventional irradiation angle adjusting device for a vehicle headlamp, the adjusting screw e
When is rotated, it slides between the rear surface of the opening edge of the fastener i and the rear surface of the groove h of the adjusting screw e (the portion indicated by A in FIG. 16). Since the groove h is not formed so deep (the limit is about 0.4 mm), the contact portion of the fastener i has a small area, and the elastic force concentrates on the small area. Therefore, there is a problem that abrasion due to sliding is severe.

Therefore, in order to prevent sliding between the adjusting screw e and the fastener i, the inner diameter of the fastener i is made smaller than the outer diameter of the groove h portion of the adjusting screw e, and the fastener i is press-fit into the groove h portion. In this way, the fastener i rotates integrally with the adjusting screw e, and this time, the fastener i slides between the front surface of the fastener i and the body a (the portion indicated by B in FIG. 16). There will be movement. However, since both the fastener i and the body a are made of synthetic resin and have low thermal conductivity, there is a problem that they may be deformed or welded to each other due to frictional heat during sliding.

Further, the elastic contact of the fastener i with the body a is made by the repulsive force generated when the O-ring m is compressed and crushed in the axial direction, but due to the dimensional variation of each component and the slight wear of the fastener i. There has been a problem that the crushing margin of the O-ring m changes significantly, and eventually the waterproofness is impaired.

Further, the fastener i of the support structure of the adjusting screw in the irradiation angle adjusting device of the vehicle headlamp has the protruding pieces j, j, j.
Are abutted from three portions of the outer peripheral edge that are equally spaced apart, so that when the adjusting screw e receives a force from a direction orthogonal to its axial direction, Direction (No. 17
It is indicated by an arrow in the figure. ), The directionality of the tilt is limited and the optical axis is easily shaken during traveling.

(E. Means for Solving the Problem) In order to solve the above-mentioned problems, the support structure of the adjusting screw in the irradiation angle adjusting device of the vehicle headlamp according to the present invention has the adjusting screw in the insertion hole formed in the body. The adjustment screw is rotatably supported by the body while the body is being held by a flange portion formed on the adjustment screw and an annular synthetic resin fastener attached to the adjustment screw. Most of the O-ring is inserted into the notch formed over the entire circumference at one opening edge, a metal washer is inserted between the fastener and the body, and the fastener is separated at equal intervals on its outer edge. From the above position, projecting pieces projecting outwardly and slits extending in the radial direction from inner edges corresponding to these projecting pieces are formed, and the fastener is brought into contact with the metal washer.

Therefore, according to the support structure of the adjusting screw in the irradiation angle adjusting device of the vehicle headlamp of the present invention, the snugness between the synthetic resin fastener and the body is good, and the fastener and the body are high when the adjusting screw is rotated. Friction heat is not generated and these are not deformed or damaged, which improves the strength of this part, and the O-ring is mostly in the notch formed at one opening edge of the insertion hole. Since it is inserted, the compression margin of the O-ring is determined only by the size of the notch and the thickness of the O-ring, so that the dimensional accuracy of other components does not affect the waterproofness, and good waterproofness can be obtained. it can. Furthermore, the fastener has four protrusions that are in contact with the body via the metal washers, so the adjustment screw is less likely to tilt with respect to the body,
This can prevent the optical axis from moving during traveling.

(F. Embodiment) [FIGS. 1 to 15] The details of the support structure of the adjusting screw in the irradiation angle adjusting device of the vehicle headlamp of the invention are applied to the vehicle headlight of the invention. A description will be given according to the illustrated embodiment.

(A. Outline of automobile headlamp) [Figs. 1 to 4] First, an outline of an automobile headlamp to which the present invention is applied will be described.

Reference numeral 1 in the figure is a vehicle headlight.

Reference numeral 2 denotes a synthetic resin lamp body, which has a recessed portion 3 which is open to the front surface. Also, the rear wall 4 of the lamp body 2
A hole 5 is formed in the center of the.

A reflecting mirror 6 is made of synthetic resin.

The reflecting mirror 6 has a concave portion 7 that is open toward the front, and the inner surface of the concave portion 7 is a reflecting surface. A mounting portion 8 that projects rearward is integrally formed on a portion of the rear surface of the reflecting mirror 6 that is close to one corner. The mounting portion 8 has a substantially rectangular tubular shape with one side surface opened, and a circular mounting hole 8a is formed in the rear surface wall.

Mounting portions 9 and 9 projecting rearward are integrally formed at two positions, that is, a position separated upward from the mounting portion 8 and a position separated laterally. These mounting portions 9, 9 have a substantially rectangular tubular shape with one side surface opened, and rear surface walls are provided with rectangular mounting holes 9a, 9a.

The reference numeral 10 designates a bulb mounting hole formed in the central portion of the reflecting mirror 6.

Reference numeral 11 is a light bulb attached to the light bulb mounting hole 10 of the reflecting mirror 6, and 12 is a waterproof cover attached between the light bulb 11 and the central hole 5 of the lamp body 2.

Reference numeral 13 denotes a lens, which is formed by integrally forming a front surface portion 13a and a peripheral wall portion 13b projecting rearward from a peripheral edge of the front surface portion 13a, and a rear end portion of the peripheral wall portion 13b is formed on the lamp body 2. It is fitted in the formed installation groove 14 and fixed by an adhesive 15 or the like.

Then, the reflecting mirror 6 is tiltably arranged in the space 16 defined by the lamp body 2 and the lens 3. That is,
The reflecting mirror 6 is tiltably supported by the lamp body 2 by one rotation fulcrum 17 and two ace adjusting parts 18, 18.

The rotation fulcrum 17 is composed of a fulcrum shaft fixed to the lamp body 2 and a ball receiving member supported by the reflecting mirror 6.

Reference numeral 19 is a fulcrum shaft, and each part is integrally formed of metal.

The fulcrum shaft 19 has a rod-like shape as a whole, a portion on the rear side of the flange 19a formed in the middle portion is a screw shaft portion 19b, and a sphere portion 19c is formed at the front end.

The fulcrum shaft 19 has its screw shaft portion 19b screwed into the pilot hole 20a of the boss seat 20 projecting from the inner surface near the corner of the rear wall 4 of the lamp body 2 to the flange 19a. Rarely, the lamp body 2 is attached so as to project forward from a position near one corner of the rear wall 4 of the lamp body 2.

Reference numeral 21 denotes a ball receiving member, which is made of synthetic resin. The ball receiving member 21 is a mounting hole 8a for the mounting portion 8 formed in the reflecting mirror 6.
A spherical concave portion 22 is formed on the rear surface and is open to the rear surface.

The fulcrum shaft 19 is placed in the spherical recess 22 of the ball receiving member 21.
The spherical portion 19c of the rotatably fulcrum 17c
Is formed.

The aiming adjusting unit 18 is composed of an adjusting screw rotatably supported by the lamp body 2 and a nut member supported by the reflecting mirror 6.

Reference numeral 23 is an adjusting screw rotatably supported by the lamp body 2 so as to penetrate the rear wall 4, and a portion 24 located in the space 16 is a screw shaft portion.

Reference numeral 25 denotes a nut member engaged with and supported by the mounting hole 9a of the mounting portion 9 of the reflecting mirror 6, and the screw shaft portion 24 of the adjusting screw 23 is screwed into the nut member 25. In this way, the aiming adjustment section 18 is formed.

Then, the adjustment screw 23 in the first aiming adjustment unit 18
When the screw is rotated, the screw shaft portion 24 is screwed in or unscrewed with respect to the nut member 25 in accordance with the rotation direction, so that the gap between the lamp body 2 and the reflecting mirror 6 at the abutting position. Is changed, whereby the reflecting mirror 6 is rotated about the line connecting the other aiming adjustment section 18 and the rotation fulcrum section 17. Therefore, when the adjusting screw 23 of the aiming adjusting portion 18 located above the rotation fulcrum 17 is rotated, the reflecting mirror 6 is tilted in the vertical direction, and the aiming adjusting portion 18 located on the side of the rotation fulcrum 17 is rotated. When the adjusting screw 23 is rotated, the reflecting mirror 6 is tilted in the left-right direction.

The present invention is applied to the support of the adjusting screws 23, 23 in the above-mentioned aiming adjusting portions 18, 18.

Since the two aiming adjustment units 18 and 18 have almost the same configuration, only one of them will be described below.

(B. Adjusting screw) [Figs. 3 to 5] Reference numeral 26 is a protrusion projecting on the inner surface of the rear wall 4 of the lamp body 2 and having a circular shape when viewed from the front, and a central portion of the protrusion 26. An insertion hole 27 is formed in the hole, and an annular protrusion 28 is formed on the peripheral edge of the front surface of the protrusion 26.

In addition, an annular projection 29 is formed on the rear surface of the rear wall 4 so as to surround the insertion hole 27 with a slight gap therebetween.

A notch 30 is formed on the opening edge on the front side of the insertion hole 27 over the entire circumference thereof.

A flange portion 31 is formed at an intermediate portion of the adjusting screw 23, and a portion 24 in front of the flange portion 31 is a screw shaft portion.

An annular groove 32 is formed at a position separated rearward from the flange portion 31 of the adjusting screw 23, and a rear portion 33 from a position separated rearward from the annular groove 32 is formed by the flange portion 31 and the groove 32. An annular engagement groove 34 is formed in a portion closer to the rear end of the small diameter portion 33, which is formed to have a slightly smaller diameter than the portion between them.

A portion 35 between the groove 32 and the small diameter portion 33 is a tapered portion whose outer diameter gradually changes, and a portion 36 after the engagement groove 34 is formed in a hexagonal column shape.

(C. Fastener) [Figs. 3 to 8] 37 is a fastener and is made of synthetic resin such as "nylon".
It is formed of 66 "and has a substantially annular shape.

A fitting insertion hole 38 is formed in the center of the fastener 37,
The fitting insertion hole 38 is composed of a rear half 38a having a uniform diameter and a front half 38b having a diameter that increases toward the front end, and the inner diameter of the rear half 38a is slightly smaller than the outer diameter of the groove 32 of the adjusting screw 23, For example, for the outer diameter 6.2 mm of the groove 32 of the adjusting screw 23, the rear half 3 of the fitting insertion hole 38
The inner diameter of 8a is 6.0 mm.

Projections 39, 39, ... Are provided outwardly at four locations on the outer periphery of the fastener 37 that are spaced apart at equal intervals.

The diameter of the circle circumscribing the tips of the protrusions 39, 39, ... Is made slightly smaller than the inner diameter of the protrusion 29 formed on the lamp body 2.

In addition, the protrusions 39, 39, ... Of the inner peripheral surface of the fastener 37.
Slits 40, 40, ... extending in the radial direction are formed at locations corresponding to the center in the circumferential direction of, and the rear ends of these slits 40, 40, ... are half as viewed from the axial direction. It is formed to have a circular shape. The slits 40, 40, ... Also have a substantially uniform depth over the entire axial length.

(D. Support of Adjustment Screw on Lamp Body) [FIGS. 3 to 5] The adjustment screw 23 is supported on the lamp body 2 in the following manner.

Insert the adjusting screw 23 from the rear end 36 into the insertion hole of the lamp body 2.
Insert the 27 into the lamp body 2 from the inside. At this time, the O-ring 41 is previously fitted into the notch 30 at the front end of the insertion hole 27. The diameter of the cross section of the O-ring 41 is made larger than the axial length of the notch 30 so that a part of the O-ring 41 protrudes forward from the notch 30, and the inner diameter of the O-ring 41 is the flange portion 31 of the adjusting screw 23. It is made slightly smaller than the outer diameter of the portion between the groove 32 and the groove 32.

The adjusting washer 23 has a sliding washer 42 on the flange portion.
It is externally fitted until it comes into contact with the rear surface of the flange 31. Therefore, when the adjusting screw 23 is inserted into the insertion hole 27 as described above, the rear surface of the flange portion 31 is O-ringed via the sliding washer 42.
41, and the O-ring 41 is brought into close contact with the outer peripheral surface of the adjusting screw 23.

Reference numeral 43 denotes a metal washer, which is externally fitted to a portion of the adjusting screw 23 projecting to the rear side of the lamp body 2,
Is abutted on the rear surface of.

Then, the fastener 37 is fitted onto the adjusting screw 23 from the rear end portion 36 thereof to be engaged with the groove 32. At this time, the fastener
Since four slits 40, 40, ... Are formed on the inner edge of 37, when passing through a portion thicker than the inner diameter, the outer side is bent so as to be displaced forward and the inner diameter is substantially expanded. , Groove 32 can be engaged. Then, due to the dimensional difference between the inner diameter of the fastener 37 and the outer diameter of the groove 32, the outer side of the fastener 37 is displaced toward the front and is elastically contacted with the metal washer 43.

As described above, the adjusting screw 23 is rotatably supported on the lamp body 2.

44 is a synthetic resin cap, which has a hexagonal tubular shape as a whole. The front half portion 44a of the cap 44 has a larger outer diameter and inner diameter than the rear half portion 44b.
Holes 45, 45 are formed at equal intervals in the circumferential direction in the middle part of the, and engaging claws 46, 46 project from the inner surface of the front side of the holes 45, 45, and the engaging claws 46, The front surfaces 46a, 46a of 46 are inclined surfaces that are displaced rearward as they approach the tip. Also,
The inside of the rear half portion 44b is a hexagonal column having an inner diameter substantially equal to the outer diameter of the hexagonal column portion 36 of the adjusting screw 23.

Then, the cap 44 is externally fitted to the hexagonal column portion 36 of the adjusting screw 23 from its front end. Then, the first half of the cap 44
44a bends outward and the engaging claws 46, 46 engage the engaging groove 3 of the adjusting screw 23.
The rear half portion 44b of the cap 44 is externally fitted to the hexagonal column portion 36 of the adjusting screw 23 and is prevented from coming off from the adjusting screw 23.

Therefore, when rotating the adjusting screw 23, it is sufficient to hold the cap 44 and rotate it.

(E. Action) Then, when the adjusting screw 23 is rotated to tilt the reflecting mirror 6, the fastener 37 rotates together with the adjusting screw 23, but the sliding resistance between the fastener 37 and the metal washer 43 is increased. It is small and wear of the fastener 37 is extremely low. Further, since the crushing margin of the O-ring 41 is determined only by the size of the cutout 30, it is hardly affected by the variation in the dimensions of other parts and the wear of the fastener 37, and stable sealing can be performed.

Furthermore, projecting pieces 39, 39, ...
.. are formed at equal intervals in the circumferential direction, so that it becomes difficult to fall in a specific direction, and blurring of the optical axis during traveling is reduced.

Since the inner portions of the slits 40, 40, ... Are formed in a semicircular shape, there is no corner portion where the stress that deforms when the fastener 37 bends is concentrated. Therefore, these slits 40, 40 ,.
It is possible to prevent cracking from occurring.

(F. Modified Example of Fastener) [FIGS. 9 to 12] FIGS. 9 to 12 show a modified example 37A of the fastener.

The fastener 37A is formed with elastic contact pieces 47, 47, ... Inclining outwardly from the position between the protrusions 39, 39, ... With the above fastener
Unlike 37, other parts are the same as the fastener 37.

And, the elastic contact pieces 47, 47, ... Are the tip portions 47a, 47a,
It is thinner as you go to.

Then, when this fastener 37A is used, as shown in FIG. 9, the tip end portions 47a, 47 of the elastic contact pieces 47, 47 ,.
... will be in elastic contact with the metal washer 43.

(G. Other Embodiments) [FIGS. 13 to 15] The above embodiment is an application of the present invention to a so-called movable mirror headlight of a vehicle headlight. The present invention is applied to a type automobile headlamp 1A.

Reference numeral 48 is a housing made of synthetic resin fixed to a vehicle body (not shown), and has a recessed portion 49 that is open toward the front.

A headlight unit 50 has a reflecting mirror 51, a lens 52 covering a front opening of the reflecting mirror 51, and a light bulb 53 arranged in a space defined by the reflecting mirrors 51 and 52. The rotation fulcrum portion 54 and the two aiming adjustment portions 55, 55 are tiltably supported in the recess 49 of the housing 48.

The rotation fulcrum portion 54 has a structure similar to that of the rotation fulcrum portion 17, and is supported by the support shaft 19 fixed to the housing 48 and the reflecting mirror 51 and is coupled to the fulcrum shaft 19 in a ball joint shape. And a ball receiving member 21.

The aiming adjustment unit 55 has the same structure as the aiming adjustment unit 18, and the adjustment screw 23 rotatably supported by the housing 48 and the screw shaft portion 24 of the adjustment screw 23 supported by the reflecting mirror 51 are provided. And a nut member 25 screwed together. The present invention is applied to support the adjusting screw 23 on the housing 48, and the detailed description thereof is omitted, but the present invention has the same structure as in the above embodiment.

(G. Effect of the Invention) As is clear from the above description, the support structure of the adjusting screw in the irradiation angle adjusting device of the vehicle headlight according to the present invention is tilted so that the irradiation angle is changed by tilting. The member is tiltably supported by a body made of synthetic resin, and the tip end of an adjusting screw rotatably supported by the body is screwed into a nut member supported by the tilting member, and the tilting member is rotated by rotating the adjusting screw. Is a structure for supporting an adjusting screw in an irradiation angle adjusting device for a vehicle headlamp, in which an insertion hole is formed in a body, and a notch extending over the entire circumference at one opening edge of the insertion hole. The adjustment screw is formed with a flange portion and a groove extending annularly at a position slightly separated from the flange portion, the adjustment screw is inserted into the insertion hole of the body, and most of the O-ring is inserted in the notch. Fit in and adjust While the body is sandwiched between the annular synthetic resin fastener engaged with the groove and the flange portion, a metal washer is inserted between the fastener and the body, and the outer edge of the fastener is formed. Protruding pieces projecting outward from positions spaced apart at equal intervals, and slits extending in the radial direction from inner edges corresponding to these protruding pieces are formed,
The fastener is abutted against the metal washer.

Therefore, according to the support structure of the adjusting screw in the irradiation angle adjusting device for a vehicle headlamp of the present invention, the snugness between the fastener made of synthetic resin and the body is good, and the fastener and the body are high when the adjusting screw is rotated. Friction heat is not generated and these are not deformed or damaged, which improves the strength of this part, and the O-ring is mostly in the notch formed at one opening edge of the insertion hole. Since it is inserted, the compression margin of the O-ring is determined only by the size of the notch and the thickness of the O-ring, so that the dimensional accuracy of other components does not affect the waterproofness, and good waterproofness can be obtained. it can. Furthermore, the fastener has four protrusions that are in contact with the body via the metal washers, so the adjustment screw is less likely to tilt with respect to the body,
This can prevent the optical axis from moving during traveling.

[Brief description of drawings]

1 to 15 show an example of an embodiment of a support structure of an adjusting screw in an illumination angle adjusting device for a vehicle headlamp according to the present invention, and FIGS. 1 to 4 show an automobile front to which the present invention is applied. FIG. 1 is a front view and FIG. 2 is a II-II of FIG.
3 is a sectional view taken along the line III-III in FIG. 1, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1, and FIG. 5 is an enlarged sectional view of an essential part. 6 is a front view of the fastener, FIG. 7 is a sectional view taken along line VI-VI of FIG. 6, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 6, and FIGS. The figure shows a modified example of the fastener. Fig. 9 is an enlarged cross-sectional view of the main part, Fig. 10 is a front view of the fastener, and Fig. 11 is XI of Fig. 10.
-XI is a sectional view taken along line XI, FIG. 12 is a sectional view taken along line XII-XII in FIG. 10, FIGS. 13 to 15 show another embodiment of the present invention, and FIG. Figures and 14 are sectional views taken along the line XIV-XIV in Figure 13, Figure 15 is a sectional view taken along the line XV-XV in Figure 13, and Figures 16 to 19 are conventional vehicle headlights. FIG. 16 shows an example of a support structure of an adjusting screw in a lighting angle adjusting device of a lamp. FIG. 16 is an enlarged sectional view of an essential part, FIG. 17 is a front view of a fastener, and FIG. 18 is XVIII-XVIII of FIG. FIG. 19 is a sectional view taken along line XIX-XIX in FIG. DESCRIPTION OF SYMBOLS 1 ... Vehicle headlight, 2 ... body, 6 ... tilting member,
23 …… Adjustment screw, 24 …… Adjustment screw tip, 25 …… Nut member, 27 …… Insertion hole, 30 …… Notch, 31 …… Flange part, 32 …… Groove, 37 …… Fastener, 39… … Protrusion, 40 ……
Slit, 41 …… O-ring, 43 …… Metal washer, 37
A: Fastener, 47: bullet contact piece, 1A: vehicle headlight, 48: body, 50: tilting member

Claims (4)

[Scope of utility model registration request] 1. A tilting member whose irradiation angle is changed by tilting is tiltably supported by a body made of synthetic resin,
Illumination angle of a vehicle headlamp in which the tip end of an adjusting screw rotatably supported by a body is screwed into a nut member supported by a tilting member and the tilting member is tilted by rotating the adjusting screw. A structure for supporting an adjusting screw in an adjusting device, wherein an insertion hole is formed in a body, a notch extending over the entire circumference is formed at one opening edge of the insertion hole, and the adjusting screw has a flange portion and the flange portion. A groove extending annularly is formed at a position spaced apart from the adjustment screw, the adjustment screw is inserted into the insertion hole of the body, and most of the O-ring is inserted into the notch, and the ring is engaged with the groove of the adjustment screw. The body is sandwiched between the synthetic resin fastener and the flange portion, and a metal washer is inserted between the fastener and the body, and the fastener is separated from the outer edge at equal intervals. Illumination angle of a vehicle headlamp, characterized in that projections projecting in one direction and slits extending in the radial direction from the inner edges corresponding to these projections are formed, and the fastener is abutted on the metal washer. Adjusting screw support structure in adjusting device 2. An elastic contact piece that is inclined outwardly from the position between the protruding pieces on the outer edge of the fastener and toward the body, and the elastic contact piece is a metal washer. A support structure for an adjusting screw in an irradiation angle adjusting device for a vehicle headlamp according to claim 1, characterized in that 3. The utility model registration claim 1 or 2 wherein the tilting member is a reflecting mirror rotatably supported by the body, and the front opening of the body is covered with a lens.
Structure for supporting the adjusting screw in the irradiation angle adjusting device of the vehicle headlamp according to the above paragraph 4. A headlamp unit in which a tilting member is rotatably supported by a body, and the headlamp unit covers a reflecting mirror, a light bulb supported by the reflecting mirror, and a front opening of the reflecting mirror. A support structure for an adjusting screw in an irradiation angle adjusting device for a vehicle headlamp according to claim 1 or 2, characterized by comprising a lens.