JPH07130206A - Installation structure of leveling device - Google Patents

Abstract

PURPOSE:To reduce the number of part items for installation and improve installation work by fixing a case to a member on the fixing side by rotating the case for a specified angle, with a holding cylindrical member inserted in a fitting portion. CONSTITUTION:A holding cylindrical member 9 formed in the lower portion of a case 6 of a leveling device 5 is first inserted in a fitting portion 13 of a lamp body 2. In this case, the front face of the case 6 comes in contact with an O ring 19. In this state, the case 6, pushed on the side of the body 2, is rotated in a direction of a rotation stop protrusion 11 approaching to a recess portion 18, with an adjusting screw as the center. On the other hand, the protrusion 11 moves toward the recess portion 18, sliding along back surface of a rear wall of the body 2, the sliding being made smoothly. When the case 6 is thus turned for about 60 degrees, a fitting protrusion portion 10 of the cylindrical member 9 gets on flat surface at the front end of the fitting portion 13 and also the protrusion 11 is fitted in the recess portion 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel leveling device mounting structure. Specifically, a leveling device for changing the irradiation angle of the headlamp is attached to a fixed-side member of the leveling device (for example, a lamp body in a reflector-movable headlamp or a vehicle body in a unit-movable headlamp). (EN) A novel mounting structure for a leveling device, which can reduce the number of parts, has good workability in mounting to a fixed-side member, and can be easily positioned and prevented from rotating with respect to the fixed-side member. To do.

[0002]

2. Description of the Related Art For example, in a so-called reflecting mirror movable type headlamp in which a reflecting mirror is tiltably supported with respect to a lamp body, a case body of a leveling device is attached to the lamp body and protrudes from the case body. The tip of the adjusting screw is connected to the rotating end side of the reflecting mirror.

An example of a conventional mounting structure of such a leveling device to a headlamp is shown in FIGS. 12 and 13.

Reference numeral a is a headlamp, and headlamp a
Comprises a lamp body b having an opening at the front, a reflecting mirror c tiltably supported by the lamp body b, a leveling device d for tilting the reflecting mirror c, and the like.

The reflector c is supported at three points with respect to the lamp body b, and the leveling device d is interposed at one of the points.

The leveling device d is a box-shaped case body e, a drive mechanism (not shown) housed in the case body e, the case body e protruding from the case body e, and moved in the front-rear direction by the drive mechanism. The adjusting screw f and the like.

In the leveling device d, an adjusting screw f is inserted into the lamp body b through an insertion hole g formed in the lower rear portion of the lamp body b, and a case body e is obtained.
Are fastened to the rear surface of the lamp body b with three screws h, h, h.

The adjusting screw f inserted in the lamp body b is connected to the rotating end side of the reflecting mirror c at its tip.

Then, by moving the adjusting screw f in the front-back direction by the drive mechanism of the leveling device d, the rotating end side of the reflecting mirror c connected to the tip of the adjusting screw f is moved in the front-back direction, and the reflecting mirror is moved. The inclination angle of c is changed, so that the irradiation angle of the headlamp is changed.

[0010]

In the mounting structure of the conventional leveling device described above, since the mounting of the leveling device to the lamp body is performed with three screws,
Three screws are required, and three screws must be screwed to attach.

Therefore, when the leveling device is attached to the lamp body, there are problems in that the number of parts for that purpose is large and the assembling workability is poor.

[0012]

In order to solve the above-mentioned problems, a mounting structure for a headlamp leveling device according to the present invention has a holding cylinder in which an adjusting screw is inserted into one of a fixed side member and a case body of the leveling device. And the holding body is formed on the other side of the case body and the fixed-side member, and the case body is fixed to the fixed-side member with the holding cylinder inserted in the engaging portion. The case body is locked to the fixed side member by rotating the case body by a predetermined angle with respect to the fixed side member, and the detent protrusion is provided on one of the fixed side member and the case body, and on the other side of the case body and the fixed side member. When the case body is rotated by the predetermined angle with respect to the fixed-side member in a state in which an engaged portion with which the rotation stopping projection engages is formed and the holding cylinder portion is inserted into the engagement portion, Engages with the engaged part Those were Unishi.

[0013]

Therefore, in the mounting structure of the headlamp leveling device of the present invention, the leveling device can rotate the case body with respect to the fixed side member by a predetermined angle with the holding cylinder part inserted in the engaging part. It can be attached to the fixed side member, the workability of attaching to the fixed side member is good, and
There is no need for dedicated parts for mounting, and the number of parts can be reduced compared to the conventional mounting structure. Moreover, when the case body is mounted in a predetermined direction with respect to the fixed side member, Since the engaged parts are engaged with each other, the positioning and the rotation stop of the leveling device with respect to the fixed side member can be realized with a simple structure.

[0014]

The details of the mounting structure of the headlamp leveling device of the present invention will be described below with reference to the illustrated embodiments.

1 to 6 show a first embodiment of a mounting structure for a headlamp leveling device according to the present invention.

In the figure, 1 is a headlamp, 2 is its lamp body, 3 is a reflecting mirror rotatably supported by the lamp body 2 in the vertical direction, and 4 is a lens covering the front opening of the lamp body 2. Is.

The reflecting mirror 3 is supported by the lamp body 2 at three points, and the leveling device 5 is interposed at one of the points.

In this embodiment, the reflecting mirror 3 is a tilting member whose irradiation angle is changed by tilting the reflecting mirror 3,
The lamp body 2 serves as a fixed member for fixing the leveling device 5, but in addition to this, the lamp unit itself in which a reflecting mirror and a light source are arranged in a space defined by the lamp body and the lens. The present invention can also be applied to a unit movable type headlamp that tiltably supports the vehicle body. In such a case, the lamp unit serves as a tilting member and the vehicle body serves as a fixed member.

The leveling device 5 is a box-shaped case body 6, a drive mechanism (not shown) housed in the case body 6, and the case body 6 protruding from the case body 6 and moved in the front-rear direction by the drive mechanism. It consists of the adjusting screw 7 etc.

Although not shown, the case body 6 is constructed by combining a front case and a back case, which are divided into two parts in the front and rear, into a united body.

An insertion hole 8 for allowing the adjusting screw 7 to project forward from the case body 6 is formed at a position closer to the lower portion of the front surface of the case body 6 and the insertion hole 8 is formed. A cylindrical holding cylinder portion 9 is integrally formed so as to project forward from the peripheral edge portion.

On the outer peripheral surface of the distal end of the holding tube portion 9, three locking projections 10, 10 and 10 projecting outward are provided, and these locking projections 10, 10 and 10 are provided in the holding tube. The parts 9 are formed at equal intervals in the circumferential direction.

The front faces of the locking projections 10, 10, 10 are inclined faces 10a, 1 which are displaced rearward as they go outward.
0a and 10a, and the rear surface, that is, the surface facing the front surface of the case body 6, is formed as smooth surfaces 10b, 10b, and 10b that are substantially perpendicular to the axis of the holding tubular portion 9. Smooth surfaces 10b, 10b, 10b and case body 6
An appropriate gap is formed between the front surface of the and. This "appropriate interval" will be described later.

Two of the three locking projections 10, 10 and 10 have a substantially trapezoidal shape when viewed from the axial direction of the holding tube portion 9, and the other one has a substantially fan shape. Has been formed.

Reference numeral 11 denotes a detent protrusion projecting at a position near the upper end of the front surface of the case body 6 above the holding cylinder portion 9, and has a small columnar shape, and the outer peripheral edge of the tip portion thereof. Are chamfered to form a tapered portion 11a.

Reference numeral 12 denotes an insertion hole formed in the lower rear portion of the lamp body 2, and the ring-shaped engaging portion 1 projecting forward and backward at the opening edge of the insertion hole 12 and extending annularly.
3 is integrally formed, and the engaging portion 13 slightly protrudes from the rear wall of the lamp body 2 toward the front side, and protrudes toward the rear side by an amount larger than the forward protrusion amount.

The inner diameter of the engaging portion 13 is substantially the same as or slightly larger than the outer diameter of the holding cylinder portion 9 of the case body 6 of the leveling device 5.

Reference numerals 14, 14, 14 denote insertion grooves formed on the inner peripheral surface of the engaging portion 13, and the locking projections 10, 10, 10 formed on the holding cylinder portion 9 are connected to the lamp body 2. It is for inserting from the outside to the inside, and the insertion groove 14,
14 and 14 are formed at equal intervals in the circumferential direction,
Each locking projection 1 corresponding to the shape and size viewed from the axial direction
It is formed to have substantially the same shape and size as 0, 10, and 10.

Further, the forming positions of the insertion grooves 14, 14, 14 are the locking projections 1 with the case body 6 placed in the correct orientation.
In relation to the formation positions of 0, 10, and 10, approximately 60 in the circumferential direction.
It is formed with a deviation.

The end surface of the engaging portion 13 on the inner side of the lamp body 2 has inclined surfaces 15a, 15a which are displaced forward from the side edges of the insertion grooves 14, 14, 14 in the circumferential direction.
15a, and flat surfaces 15b, 15 such that a substantially central portion between the insertion grooves 14 and 14 is substantially perpendicular to the axial direction.
b, 15b.

The distance between the flat surfaces 15b, 15b, 15b of the rear end surface and the front end surface of the engaging portion 13 is
Smooth surfaces 10b, 10 of the locking projections 10, 10, 10
The gaps b, 10b and the front surface of the case body 6 are formed to have substantially the same distance.

Reference numeral 16 denotes an annular wall which is provided concentrically on the rear surface of the rear wall of the lamp body 2 so as to surround the engaging portion 13, and the protruding amount of the annular wall 16 is the engaging portion. The protrusion 13 is formed to be slightly larger than the protrusion amount from the rear wall of the lamp body 2, so that an annular groove 17 (hereinafter referred to as “O-ring groove”) is formed between the engaging portion 13 and the annular wall 16. It is formed.

Reference numeral 18 denotes an engaging portion 13 on the rear wall of the lamp body 2.
Is a recess formed at a position corresponding to the anti-rotation protrusion 11 in a state in which the case body 6 is placed in the correct direction, and the size thereof is substantially the same as the size of the anti-rotation protrusion 11. Has been done.

Reference numeral 19 is an O-ring, which is fitted in the O-ring groove 17 of the lamp body 2 and
Is projected rearward from the rear edge of the annular wall 16.

Then, the leveling device 5 is attached to the lamp body 2 as follows.

First, the holding cylinder portion 9 formed on the lower portion of the case body 6 of the leveling device 5 is attached to the engaging portion 1 of the lamp body 2.
Insert from the back to 3.

At this time, the locking projections 10 and 1 of the holding tube portion 9
Since the positional relationship between 0 and 10 and the insertion grooves 14, 14, 14 of the engaging portion 13 is deviated by approximately 60 degrees in the circumferential direction, the case body 6
The holding cylinder 9 is inserted into the engaging portion 13 in a state of being rotated by 60 degrees in the circumferential direction from the correct direction (the direction in which the anti-rotation protrusion 11 is located directly above the holding cylinder 9), and the locking projections are inserted. Each 10 is inserted into the corresponding insertion groove 14.

When the holding cylinder portion 9 is inserted into the engaging portion 13, the front surface of the case body 6 contacts the O-ring 19.

From this state, while pushing the case body 6 toward the lamp body 2 side, the adjusting screw 7
The case body 6 is rotated in the direction in which the anti-rotation projection 11 and the concave portion 18 approach each other around.

At this time, the locking projections 10 and 1 of the holding tube portion 9
The smooth surfaces 10b, 10b, 10b of 0 and 10 are engaged with the engaging portion 13.
As a result of riding on the inclined surfaces 15a, 15a, 15a of the front end surface of the case body 6, the case body 6 is moved further toward the front,
The O-ring 19 is crushed.

On the other hand, the rotation stop projection 11 moves toward the concave portion 18 while the tip end thereof slides on the rear surface of the rear wall of the lamp body 2, and the sliding thereof causes the tip end portion of the rotation stop projection 11 to taper. Since it is formed on the portion 11a, it is smoothly performed.

When the case body 6 is rotated by approximately 60 degrees, the locking projections 10, 10 and 10 of the holding cylinder portion 9 ride on the flat surfaces 15b, 15b and 15b of the front end surface of the engaging portion 13 at the same time. The detent 11 is engaged with the recess 18.

In this manner, the case body 6 of the leveling device 5 is attached to the lamp body 2 which is the fixed side member, and the holding cylinder portion 9 of the case body 6 is attached to the engaging portion 13 in a pressure contact state. Therefore, the leveling device 5 does not easily come off, and the leveling device 5 does not rotate with respect to the lamp body 2 due to the engagement of the detent protrusion 11 and the recess 18.

The front end portion of the adjusting screw 7 is a screw shaft portion 22, and the screw shaft portion 22 is screwed into a nut 23 supported at a position near the turning end of the reflecting mirror 3, Thus, the leveling device 5 and the reflecting mirror 3 which is a tilting member are connected.

Thus, the adjusting screw 7 housed in the case body 6 moves the adjusting screw 7 in the front-back direction, whereby the reflecting mirror 3 is tilted in the vertical direction.

In this embodiment, as the rotation stopping means for the leveling device 5 with respect to the lamp body 2, the case body 6 of the leveling device 5 is provided with the rotation preventing projection 11 and the lamp body 2 is provided with the concave portion 18. On the contrary, the leveling device 5
The case body 6 may be provided with a recess, and the lamp body 2 may be provided with a rotation-stop projection. Further, the engaged portion with which the rotation-stop projection is engaged is not limited to the recess 18 as in the above embodiment. It may be a small hole.

7 to 11 show a second embodiment of the mounting structure of the leveling device of the present invention.

The second embodiment is different from the above-mentioned first embodiment only in the structure of the mounting portion for the leveling device of the lamp body, and the other portions are the same as those in the first embodiment. Since they are the same, the different parts will be mainly described in detail, and the same parts as those in the first embodiment will be described with the same reference numerals as the same parts in the first embodiment. Is omitted.

An insertion hole 22 is formed on the rear surface of the lamp body 2A, and a cylindrical support cylinder 23 is provided so as to project rearward from the peripheral edge of the insertion hole 22.

A supporting edge 24 projecting inward is formed at the rear end of the supporting cylinder 23, and an annular engaging portion 25 having a short axial length is formed at the inner peripheral edge of the supporting edge 24. There is. An annular O-ring groove 26 is formed between the rear end of the engaging portion 25 and the rear end of the support cylinder 23.

The inner diameter of the engaging portion 25 is the same as the leveling device 5 described above.
The outer diameter of the holding cylinder portion 9 of the case body 6 is substantially equal to or slightly larger than that of the holding cylinder portion 9.

Reference numerals 27, 27 and 27 denote insertion grooves formed on the inner peripheral surface of the engaging portion 25, and the locking projections 10, 10 and 10 formed on the holding cylinder portion 9 are connected to the lamp body 2. It is for inserting from the outside to the inside, and the insertion groove 27,
27, 27 are formed at equal intervals in the circumferential direction, and
Each locking projection 1 corresponding to the shape and size viewed from the axial direction
It is formed to have substantially the same shape and size as 0, 10, and 10.

Further, the forming positions of the insertion grooves 27, 27, 27 are the locking projections 1 with the case body 6 placed in the correct direction.
In relation to the formation positions of 0, 10, and 10, approximately 60 in the circumferential direction.
It is formed with a deviation.

The end surface of the engaging portion 25 inside the ramp body 2 is inclined surfaces 28a, 28a, which are displaced forward from the side edges of the insertion grooves 27, 27, 27 in the circumferential direction.
28a, and flat surfaces 28b, 28 such that the substantially central portion between the insertion grooves 27 and 27 is substantially perpendicular to the axial direction.
b, 28b.

The distance between the flat surfaces 28b, 28b, 28b of the rear end surface and the front end surface of the engaging portion 25 is
Smooth surfaces 10b, 10 of the locking projections 10, 10, 10
The gaps b, 10b and the front surface of the case body 6 are formed to have substantially the same distance.

Reference numeral 29 is a fixed wall projecting rearward from the rear surface of the lamp body 2A, the rear end of which is substantially in the same plane as the rear end of the support cylinder 23, and the rear end edge thereof has an engaging notch. 30 is formed. Further, one end 29a of the fixed wall 29 is curved in a direction away from the support cylinder 23.

Then, the leveling device 5 is attached to the lamp body 2A as follows.

First, the holding cylinder portion 9 formed in the lower portion of the case body 6 of the leveling device 5 is inserted into the engaging portion 25 of the lamp body 2A from the rear side. Prior to this, the O-ring 19 is inserted into the O-ring groove 26.

At this time, the locking projections 10 and 1 of the holding tube portion 9
Since the positional relationship between 0 and 10 and the insertion grooves 27, 27, 27 of the engaging portion 25 is deviated by approximately 60 degrees in the circumferential direction, the case body 6
Is rotated by 60 degrees in the circumferential direction from the correct direction (the direction in which the rotation-stopping projection 11 is located directly above the holding tubular portion 9), the holding tubular portion 9 is inserted into the engaging portion 25, and the locking projections are inserted. Each 10 is inserted into the corresponding insertion groove 27.

When the holding cylinder portion 9 is inserted into the engaging portion 25, the front surface of the case body 6 contacts the O-ring 19.

From this state, while pressing the case body 6 toward the lamp body 2A side, the case body 6 is moved in a direction in which the detent protrusion 11 and the curved end 29a of the fixed wall 29 approach each other with the adjusting screw 7 as the center. Rotate.

At this time, the locking projections 10 and 1 of the holding tube portion 9
The smooth surfaces 10b, 10b, and 10b of 0 and 10 are engaged with the engaging portion 25.
As a result of riding on the inclined surfaces 28a, 28a, 28a on the front end surface of the case body 6, the case body 6 is moved further toward the front,
The O-ring 19 is crushed.

On the other hand, the rotation preventing projection 11 moves toward the one end 29a of the fixed wall 29.

When the case body 6 is rotated by about 60 degrees, the anti-rotation projection 11 comes into contact with the one end portion 29a of the fixed wall 29. From here, when the case body 6 is further rotated,
The rotation preventing projection 11 slides along the surface of the fixed wall 29 while pressing the fixed wall 29 in a direction away from the support cylinder 23 to bend the fixed wall 29, and the locking projection of the holding cylinder portion 9 10,
10, 10 are flat surfaces 28b, 28 of the front end surface of the engaging portion 25.
Simultaneously with riding on b and 28b, the detent protrusion 11 reaches a position corresponding to the engaging notch 30 of the fixed wall 29, the bent fixed wall 29 returns to its original state, and the detent protrusion 11 engages. It engages the notch 30.

In this manner, the case body 6 of the leveling device 5 is attached to the lamp body 2A which is the fixed member, and the holding cylinder portion 9 of the case body 6 is attached to the engaging portion 25 in a pressure contact state. Therefore, it is not easily disengaged, and the engagement notch 30 between the detent projection 11 and the fixed wall 29 is not provided.
The leveling device 5 does not rotate with respect to the lamp body 2A due to the engagement with.

[0066]

As described above, the mounting structure of the leveling device according to the present invention has the adjusting screw connected to the rotating end of the tilting member whose irradiation angle is changed by tilting. Then, the drive mechanism for driving the adjusting screw is a mounting structure for the fixed side member of the leveling device housed in the case body, and the adjusting screw is inserted into one of the fixed side member and the case body. The holding cylinder is formed, and an engaging portion for locking the holding cylinder is formed on the other of the case body and the fixed-side member, and the case body is fixed with the holding cylinder inserted in the engaging portion. The case body is locked to the fixed side member by rotating the side member at a predetermined angle, and at the same time, a rotation stop projection is provided on one of the fixed side member and the case body. An engaged portion is formed on the other side of the body and the fixed side member, with which the anti-rotation projection engages, and the case body is rotated with respect to the fixed side member by the predetermined angle in a state where the holding cylinder is inserted into the engaging portion. It is characterized in that the rotation stopping projection and the engaged portion are engaged with each other when the above.

Therefore, in the mounting structure of the headlamp leveling device of the present invention, the leveling device can rotate the case body with respect to the fixed side member by a predetermined angle with the holding cylinder part inserted in the engaging part. It can be attached to the fixed side member, the workability of attaching to the fixed side member is good, and there is no need for dedicated parts for attachment, and the number of parts can be reduced compared to the conventional mounting structure, Moreover, when the case body is attached to the fixed side member in a predetermined direction, the detent protrusion is engaged with the engaged portion, so that positioning and detent of the leveling device with respect to the fixed side member can be performed. It can be realized with a simple structure.

In the above embodiment, the holding cylinder is provided on the case body of the leveling device, and the supported portion is provided on the lamp body which is the fixed side member, but conversely, the holding cylinder is provided on the lamp body. You may make it provide a support part in a case body.

Further, the shapes and structures of the respective portions shown in the above embodiments are merely examples of the embodiment when the present invention is carried out, and the technical scope of the present invention is limited by these. Must not be interpreted as.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts showing an outline of a mounting structure of a leveling device of the present invention and showing a state before mounting the leveling device to a fixed member.

FIG. 2 is a rear view showing an engaging portion of a fixed member.

FIG. 3 is a front view of the leveling device.

FIG. 4 is a front view showing a state in which a holding cylinder portion of the leveling device is inserted into an engaging portion of a fixed side member.

FIG. 5 is a front view showing a state in which the leveling device is attached to a fixed member.

6 is a cross-sectional view taken along line VI-VI in FIG.

FIG. 7 shows a second embodiment of the mounting structure of the leveling device of the present invention together with FIGS. 8 to 11, and this figure is an exploded perspective view of a main part showing a state before mounting the leveling device to a fixed member. It is a figure.

FIG. 8 is a rear view showing an engaging portion of a fixed-side member.

FIG. 9 is a front view showing a state in which the holding cylinder portion of the leveling device is inserted into the engagement portion of the fixed-side member.

FIG. 10 is a front view showing a state in which the leveling device is attached to a fixed member.

11 is a sectional view taken along line XI-XI in FIG.

FIG. 12 is a rear view showing an example of a conventional leveling device mounting structure.

13 is a sectional view taken along line XIII-XIII in FIG.

[Explanation of symbols]

 2 Lamp body (fixed member) 3 Reflector (tilting member) 5 Leveling device 6 Case body 7 Adjusting screw 9 Holding cylinder part 11 Rotation stop protrusion 13 Engagement part 16 Recessed part (engaged part) 2A Lamp body 25 Engagement Mating part 30 Engagement notch (engaged part)

Claims (1)

[Claims] 1. A case body having an adjusting screw connected to a rotating end of a tilting member whose irradiation angle of irradiation light is changed by tilting, and a drive mechanism for driving the adjusting screw. A structure for mounting a leveling device housed in a fixed side member, wherein a holding cylinder part through which the adjusting screw is inserted is formed in one of the fixed side member and the case body, and the case body and the fixed side member are On the other hand, an engaging portion to which the holding tubular portion is locked is formed, and the case body is fixed side by rotating the case body with respect to the fixed side member by a predetermined angle with the holding tubular portion inserted in the engaging portion. It is designed to be locked to a member, and a rotation stop protrusion is provided on one of the fixed side member and the case body.
Further, an engaged portion with which the rotation preventing projection engages is formed on the other of the case body and the fixed side member, and the case body is fixed to the fixed side member with the holding cylinder portion inserted in the engagement portion. A mounting structure for a leveling device, characterized in that the rotation preventing projection and the engaged portion are engaged with each other when rotated by an angle.