JPS60259539A - Optical-axis adjusting mechanism for lighting equipment for car - Google Patents

Abstract

PURPOSE:To improve the incorporation performance by constituting each adjusting member for the vertical and horizontal direction adjusting mechanisms for a reflector from a turning member and a driving member rotatably supported onto a housing joining the both members in free mounting and demounting on a same axis line. CONSTITUTION:An optical-axis adjusting mechanism is equipped with a horizontal-direction adjusting mechanism 70 which supports a reflector 52 so as to be advanced and retreated for a housing 50, around a turning supporting-point mechanism (not shown in the figure) for supporting one point in the direction of width of the reflector 52, vertical-direction adjusting mechanism 80 which supports the reflector 52 so as to be advanced and retreated, around the mechanism 70, and a correcting mechanism 90 which is interlocked with the vertical-direction adjusting mechanism 80 when the horizontal-direction is adjusted. In this case, the adjusting members 76 and 84 of the adjusting mechanism 70 and 80 are constituted of the turning members 76a and 84a rotatably supported onto the housing 50 and driving members 76b and 84b, respectively. The both are connected so as to be mounted and demounted by the connecting means consisting of arm parts 76c and 84c and groove parts 76d and 84d.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an optical axis adjustment mechanism in an automobile lamp,
In particular, the present invention relates to an optical axis adjustment mechanism for an automobile lamp that can be easily assembled into a housing.

[Technology background]

In general, if we take a recirculating headlamp as an example of an automobile lighting device, the headlamp is a radiator core support panel that defines the front surface of the vehicle body, as shown in FIGS. 1 to 4. a housing 2 fixed to the housing 1 using an insert bolt 8 and a nut 9 and having an opening on the front surface; a lens 3 formed of glass or the like that covers the opening of the housing 2; and a lens 3 disposed within the housing 2. A pair of glue 7 reflectors 4 (specifically, 4a, 4b), and a pulp 5 (specifically, 5a, 5a, 4b) as light sources for low beam and high beam, which are attached to each reflector 4 in a predetermined posture.
5b). In this type, the light from the pulp 5 is reflected by the reflector 4 and then irradiated to the front of the vehicle body through the lens 3. In order to obtain light distribution characteristics, the optical axis must be adjusted, and usually the reflector 4 is supported in the housing 2 via the optical axis adjustment mechanism A, and the reflector 4 is adjusted vertically and horizontally by the optical axis adjustment mechanism A. The optical axis of the pulp 5 is indirectly adjusted.

[Prior art and its problems]

Previously, the applicant of the present application proposed Japanese Patent Application No. 58-192559 as an optical axis adjustment mechanism for the above-mentioned automobile lamp.

As shown in FIGS. 2 to 5, this optical axis adjustment mechanism A includes a rotation fulcrum mechanism 10 that rotatably supports one point of the reflector 4, and a horizontal line H passing through the fulcrum of this rotation fulcrum mechanism. a left-right adjustment mechanism 20 that supports the reflector 4 so that it can move forward and backward with respect to the housing 2; and a horizontal adjustment mechanism 20 that allows the reflector 4 to move forward and backward with respect to the housing 2 by applying force on a vertical line v1 passing through the support point of this left-right adjustment mechanism. a correction mechanism 40 that interlocks the vertical adjustment mechanism supported by the vertical adjustment mechanism and the vertical adjustment mechanism when operating the horizontal adjustment mechanism, and tilts the reflector with a vertical Mvt passing through the fulcrum of the rotation fulcrum mechanism as a rotation center line; It is made up of.

In this rotation fulcrum mechanism 10, a sphere 12 is attached to a reflector 4a via a bracket 11, and one sphere 12 is pivotally supported on a receiving portion 13 provided on the housing 2 side. The left-right adjustment mechanism 20 that supports the reflector on the horizontal line H passing through the fulcrum of the rotation fulcrum mechanism 20 has a bracket 21 attached to the reflector 4a,
A connecting body 23 made of resin is fixed to the hole 22 of this bracket 21 via a clip part 24, and this connecting body n
A female screw portion 25 is formed in the housing 2, and an adjustment bolt 26 rotatably supported on the housing 2 side is screwed into the female screw portion 25.

In addition, the vertical adjustment mechanism (equipment) provided on the vertical line of the fulcrum of the left-right adjustment mechanism 20 is attached to the bracket 31 on the reflector 4a.
A # threaded portion 32 is formed in the housing 2, and a resin screw rod is screwed into this female threaded portion 32, while an adjustment shaft fitting is rotatably supported on the housing 2 side. A key groove 35 is provided, and the adjustment shirt 34 is slidably splined to the key grooved hole of the screw rod.

Furthermore, the correction mechanism 40 provided between the left-right adjustment device 11120 and the vertical adjustment mechanism (equipment) includes, for example, a pair of leg pieces 41 protruding downward in the longitudinal direction of the vehicle at the lower part of the connection body n. The adjustment shirt 34 is movably inserted through the shaft insertion hole 42 formed at the tip of each leg piece 41, and the pair of leg pieces 41 clamps both axial ends of the screw rod wing. This is what I did.

Therefore, even if it is difficult to adjust the optical axis on the widthwise side of the optical axis adjustment mechanism A beam 7 and the reflector 4 in the automobile lamp according to this example due to the work space, a wide work space can be secured. The optical axis can be adjusted on the other side in the width direction of the 7-rector, which makes the optical axis adjustment work easier.On the other hand, when the right adjustment mechanism 20 is operated, the vertical adjustment mechanism is Since the reflector is tilted with the vertical axis passing through the rotation fulcrum of the rotation fulcrum mechanism 10 as the rotation axis, the situation where the vertical optical axis goes out of alignment when adjusting the left and right optical axis is avoided. This can be avoided, and the optical axis can be adjusted more accurately.

However, in the optical axis adjustment mechanism of the automatic military lamp according to the above-mentioned prior art, due to its structure, when the optical axis adjustment mechanism is assembled to the housing 2, the adjustment bolt 26 and adjustment shirt 34 are required. After inserting it into the housing 2 from the outside and rotatably supporting it on the housing 2 using a clip or the like, attach the optical axis adjustment mechanism A, insert the flaper 4 into the housing, and screw the adjustment bolt 26 into the female screw of the connector n. Part 25
At the same time, it is necessary to insert the adjustment shaft 34 into the grooved hole of the screw rod, and these operations require special equipment, jigs, etc., and require time to assemble. This will increase costs.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object of the present invention is to provide an optical axis adjustment mechanism for an automobile lamp that can be easily assembled into a housing while maintaining the advantages of the prior art.

(' [Structure of the Invention] This purpose is to cover the opening of a housing fixed to the vehicle body with a lens, place a light source in the housing, and attach the light source to the lens in a predetermined posture. On the other hand, above.

a rotation fulcrum mechanism that rotatably supports one point of the flap;
A left-right adjustment mechanism that supports the above-mentioned seven rectors so that they can advance and retreat from the housing on a horizontal line passing through the fulcrum of the rotation fulcrum mechanism, and a support for the left-right adjustment mechanism. A vertical adjustment mechanism that supports the reflector so that it can move forward and backward with respect to the housing by operating an adjustment member protruding outside the housing on a vertical line passing through the point, and a vertical adjustment mechanism that interlocks when the horizontal adjustment mechanism is operated. The reflector is connected to the housing so as to be tiltable in vertical and horizontal directions through an optical axis adjustment mechanism that includes a correction mechanism that tilts the reflector using a vertical line that passes through the fulcrum of the rotational fulcrum mechanism as a center line of rotation. In the automotive lighting equipment, the adjustment parts of the left and right adjustment mechanisms and the vertical adjustment mechanisms are formed by a rotating member rotatably supported by the housing and a driving member attached to the adjustment mechanism. This is achieved by an optical axis adjustment mechanism in an automobile lamp that transmits motion and is connected by a connecting means that can be attached and detached in the axial direction.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical axis adjustment mechanism for an automobile lamp according to an embodiment of the present invention will be described below with reference to the drawings.

6 to 9 show embodiments of the present invention,
The basic structure of the optical axis adjustment mechanism in the automotive lamp according to this embodiment is based on the prior art except for the structure of the adjustment bolt 76 of the left-right adjustment mechanism 70 and the structure of the adjustment shaft 84 of the vertical adjustment mechanism 80. This is substantially the same as the optical axis adjustment mechanism A in the automotive lamp. That is, in the optical axis adjustment mechanism I according to this embodiment, a light source 51 is disposed in a housing 50 fixed to the vehicle body, and this light source is attached to a reflector in a predetermined attitude, and one point of this reflector 52 is attached. A rotating fulcrum mechanism 60 that is rotatably supported, and an adjustment bolt with the seven rectors 52 protruding from between the housings on a horizontal line H passing through the fulcrum of this rotating fulcrum mechanism (shown in FIG. 2). 76, the reflector 52 is moved into the housing on the vertical line Vl (shown in FIG. 2) passing through the left-right adjustment mechanism TO that supports the housing 50 so as to be movable forward and backward, and the support point of this left-right adjustment mechanism. a vertical adjustment mechanism 80 that supports the housing 50 so as to be movable toward and away from the housing 50 by operating an adjustment shaft hole protruding from the outside; and a fulcrum of the rotation fulcrum mechanism that interlocks the vertical adjustment mechanism when the left-right adjustment mechanism is operated. The reflector 52 and the housing 50 are connected to each other by an optical axis adjustment mechanism λ, which is composed of a correction mechanism 90 that tilts the above-mentioned seven reflectors with a vertical line Vt (shown in FIG. 2) passing through the center line of rotation as the center line of rotation. .

This rotation fulcrum mechanism 60 has a spherical body 62 attached to the reflector 52 via a bracket 61, as in the prior art, and the spherical body 62 is pivotally supported on a receiving portion 63 provided on the housing 50 side. And this rotation fulcrum mechanism 6
The left-right adjustment mechanism 70 that supports the reflector on the horizontal line H passing through the fulcrum of 0 has a bracket 71 attached to the reflector 52, and a resin connecting body γ3 fixed to the hole 72 of the bracket 71 via the clip part 74. At the same time, a female threaded portion 75 is formed on this connecting body 73, and an adjustment bolt 76 formed of two members is screwed into this female threaded portion 75.

This adjustment bolt 76 is rotatably supported by the housing 50 and has a hexagonal rotary tool locking part 77 formed at one end thereof, and a rotary member 76a that is rotatably supported by the housing 50 and is screwed into the female thread part 15. and a drive part 76b in which a male screw part 78 is formed. The rotating member 76a and the driving member 76b are connected by a connecting means formed on each member. That is, at the other end of the rotating member 76a, the rotating member 7
Four arm portions 76c are formed extending in the diametrical direction of 6a and having circular cross-sections and orthogonal to each other. -Blade drive member 7
One end of 6b is made of an elastic material, such as synthetic resin, and has a substantially cross-shaped groove 76d into which the arm 76C of the rotating member 76a is fitted.

The cross-sectional shape of the groove 76d is circular like the arm 76c, and the opening width of the end face is smaller than the internal width, so that the arm γ6c can be elastically fitted into the groove 76d. Further, the opening between the groove portions 76d on the end face of the drive member 76b is formed in a mountain shape, and the arm portions 76c are connected to the groove portions 76d.
A guide surface 76e is formed so that even if the arm portion 76c is not exactly positioned at the opening of the groove portion 76d when the arm portion 76c is inserted into the opening of the groove portion 76d, the side portion of the chevron slides and moves to the opening of the groove portion 76d.

In the figure, reference numeral 79 indicates a flange portion that is formed integrally with the rotating member and abuts against the outer wall of the housing 50, and reference numeral 101 indicates a clip 102 that, together with the 7-lung portion 79, regulates the axial position of the rotating member 76a. ° indicates an annular clip groove into which the clip is inserted.

In addition, the vertical adjustment mechanism 80, which is provided on the vertical line of the fulcrum of the left-right adjustment mechanism 70, has a bracket 81 attached to the reflector 52, and a single female thread 82 formed on the bracket 81. housing 5
Rotating member 84a rotatably supported at 0 and this rotating member 84
A drive unit 8 connected to a and having a predetermined key groove 85 formed therein.
4b) is slidably splined to the key grooved hole 86 of the screw rod 83.

The adjustment shaft 84 is formed in substantially the same manner as the adjustment bolt 76 described above, and the drive member 76b of the adjustment bolt 76 has a male threaded portion.
The only difference is that a predetermined key groove 85 is formed in the drive portion 84b, and a description thereof will be omitted.

Furthermore, the correction mechanism 90 provided between the horizontal direction adjustment mechanism 70 and the vertical direction adjustment mechanism 80 includes, for example, a pair of leg pieces 91 provided at the lower part of the connection body 73 to project downward in the longitudinal direction of the vehicle body. , the adjusting shaft 84 is movably disposed through a shaft insertion hole 92 formed at the tip of each leg piece 91, and both ends of the screw rod 83 in the axial direction are held between the pair of leg pieces 91. be.

Therefore, the optical axis adjustment mechanism N according to this embodiment is
0, first attach the adjusting bolt 76 and the adjusting shaft rotating members 76a and 84b.

Next, the horizontal adjustment mechanism 70 and the vertical adjustment mechanism 80, each of which has the adjustment bolt 76 and the drive parts 76b and 84b of the adjustment shaft 84 attached to the reflector 52, are attached together with the ball 62 of the rotation fulcrum mechanism and the correction mechanism 90, and the housing 50 is Insert inside. The sphere 62 is connected to the receiving portion 63, and the driving members 76b and 84b are connected to the rotating member 76a.

Press it so that it comes into contact with 84a. At this time, the groove 76d
, 84d is formed in a mountain shape, so the arm portion γ
Even if the phases of 6c and 84c do not match, the arm 7
6c and 84c move along the slope to form the groove 76d.
, 84d is located at the opening position i. If you press further, the groove will become old.

84d is made of elastic synthetic resin, so it expands to match the diameter of the arm portions 76c, 84c, and the arm portions 76c, 84c form grooves 76d, 84d.
inserted inside. This completes the assembly of the optical axis adjustment mechanism A' to the housing mark.

Next, when adjusting the vertical optical axis of the bulb 51 according to this embodiment, as shown in FIG. 6, the adjustment shaft 84 of the vertical adjustment mechanism 80 is rotated in a predetermined direction. Bye. In this case, as the adjustment shaft 84 rotates, the screw rod 83 rotates while its axial movement is restrained by the leg pieces 91, so the lower part of the reflector 52 near the vehicle body center line is rotated via the bracket 81. will move back and forth. At this time, since the left-right adjustment mechanism 70 is not interlocked via the correction mechanism, the
2 is tilted about the horizontal line H as the center of rotation, as shown by the dashed line in FIG. 6, and the vertical optical axis of the bulb 51 is adjusted. Since the vertical adjustment mechanism 80 is provided at the lower part of the reflector 52 near the center line of the vehicle body, the adjustment mechanism 80 can be adjusted almost at the center of the valve replacement hole.
□i' work, and the work space is wider than before, making the optical axis adjustment work easier.

Further, in order to adjust the optical axis of the bulb 51 in the left-right direction, as shown in FIG. 7, the adjustment pole 76 of the left-right adjustment mechanism TO may be rotated in a predetermined direction. in this case,
Since the connecting body 73 moves back and forth with the rotation of the adjustment bolt 76, the upper part of the reflector 52 closer to the vehicle body center line moves back and forth via the bracket 71. At this time, the leg pieces 91 of the correction mechanism 90 also move back and forth following the movement of the connecting body 73, so that the cicada lever 13 held between the pair of leg pieces 91 moves against the adjustment shirt 84. While relatively sliding, the connecting body 73 moves back and forth by the moving stroker, and the lower part of the 7-rector 52 closer to the vehicle body center line moves back and forth via the bracket 81. Therefore, as shown by dotted lines in FIGS. 6 and 7, one side of the seven reflectors 52 closer to the vehicle center line moves back and forth uniformly, and the reflector 52 uses the vertical line V as its center of rotation. By tilting, the optical axis of the bulb 51 in the left and right direction is adjusted. In this state, left and right direction 1
The position of the adjustment mechanism 70 allows for easy adjustment, and since the vertical position of the reflector 52 is kept constant, there is no possibility that the vertical optical axis of the bulb 51 will be deviated. There is no fear at all.

In this embodiment, the rotating members 76a and 84a of the adjusting bolt 76 and the adjusting shaft 84 and the driving member 7
6b.

The connection with the rotating members 76a, 84a is made by arm portions γ6c, 84c provided on the rotating members 76a, 84a and the drive members 76b, 84.
This was done by fitting the grooves 76d and 84d formed in the arm part 76c.

The formation positions of the grooves 84c and the grooves 76d and 84d may be reversed, and the number of the arm portions 76c and 84c is not limited to four. In addition, the connection structure is also similar to the arm portion 76c.
.

The fitting between the grooves 84C and the grooves 76d and 84d is not limited to the above embodiment, and the design may be changed as appropriate.

Furthermore, the rotation fulcrum mechanism 60, the left-right adjustment mechanism 70, and the vertical adjustment mechanism 80 are not limited to those shown in the above embodiments, and may be modified in design as appropriate. Further, the correction mechanism 90 is not limited to the one shown in the above embodiment, and for example, a bracket 71 provided on the reflector 52 that moves back and forth by the left-right adjustment mechanism 70 may be extended downward, and the bracket 71 may be extended downward. An engagement hole is provided at the tip of the screw rod 8 of the vertical adjustment mechanism 80.
3 may be formed with a single groove, and the edge of the engagement hole may be engaged with the groove to ensure the rotational movement of the screw rod 83, and the design may be changed as appropriate. Further, in the above embodiment, the present invention is applied to the mirror 7 reflector 52 located on the outside in the vehicle width direction of the rotating headlight, but the present invention is not limited to this. Of course, the present invention can be applied to automotive lamps that require adjustment. In this case, the rotation fulcrum mechanism 6
The arrangement position of the adjustment mechanism 7 is determined as appropriate depending on the lamp, and the adjustment mechanism 7 is arranged in accordance with the position of the rotation fulcrum mechanism 60.
0 and 80 may be determined.

〔Effect of the invention〕

As explained above, according to the optical axis adjustment mechanism for an automobile lamp according to the present invention, a rotation fulcrum mechanism is provided on one side in the width direction of the reflector, and a rotation support mechanism is provided on the other side protruding outside the housing. In addition to providing a vertical adjustment mechanism and a horizontal adjustment mechanism that are operated by an adjustment member, the adjustment member is composed of a rotating member that is rotatably supported by the housing and a drive member that is connected to the adjustment mechanism, and the adjustment member is configured to rotate between them. Since the connection is made using a connecting means that is capable of interlocking transmission and is detachable in the axial direction, when assembling this shaft adjustment mechanism to the housing, first, the rotating member of the adjusting member is rotatably supported at a predetermined position in the housing, and then the driving member of the adjusting member is All you have to do is assemble the adjustment mechanism, etc. that has been assembled into the reflector, insert this 7-reflector into the housing, and connect each adjustment member. Therefore, when assembling the optical axis adjustment mechanism to the housing, special jigs, etc. are required. This can be done extremely easily without the need for it, and can reduce manufacturing costs, as well as making it difficult to adjust the optical axis on the - side of the width direction of the rectifier due to the work space.
, with -c □1□ According to the present invention, when the left-right adjustment mechanism is operated, the vertical adjustment mechanism is interlocked via the correction mechanism, and the reflector is tilted with the vertical axis passing through the rotation fulcrum of the rotation fulcrum mechanism as the rotation axis. Therefore, it is possible to avoid a situation in which the vertical optical axis goes out of alignment when adjusting the optical axis in the horizontal direction, and the optical axis can be adjusted more accurately.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a push part showing an example of an automobile lamp;
FIG. 2 is a front view seen from the direction of FIG. 1 showing an example of an optical axis adjustment mechanism in a vehicle lamp according to the prior art;
Figures 3 and 4 are the l-11 line and ff-ff in Figure 2.
A line sectional view, FIG. 5 is a perspective view of a main part of an optical axis adjustment mechanism according to the prior art, and FIG. 6 corresponds to FIG. 3 showing an embodiment of an optical axis adjustment mechanism in an automobile lamp according to the present invention. cross section,
FIG. 7 is a cross-sectional view of the optical axis adjustment mechanism shown in FIG. 6, which corresponds to FIG. 4, FIG. 8 is a perspective view of the main parts of the optical axis adjustment mechanism shown in FIG. 6, and FIG. 9 (1) . (2) is an enlarged perspective view showing a connecting portion of an adjustment member used in the optical axis adjustment device shown in FIG. 6, and an X-ray arrow view in FIGS. 10 and 9; 10, 60... Rotation fulcrum mechanism 20, 70... Vertical direction adjustment mechanism 26, 76... Adjustment bolt (adjustment member) 76a...
・Rotating member 76b...Driving member 76C...Arm part
76d -- Groove portion 30, 80... Lateral adjustment mechanism fitting, 84... Adjustment shaft (adjustment member) 84a...
Rotating member aS--Drive member 84C... Arm portion 84
d...Groove portions 40, 90...Correction mechanism Fig. 1 Fig. 3 Fig. 4 Fig. 6- Fig. 6 Fig. 7N 7 Fig. 8 Fig. 9 (1) Fig. 9 (2)

Claims (1)

[Claims] The opening of the housing fixed to the vehicle body is covered with a lens, and a light source is disposed within the housing, and the light source is attached to the reflector in a predetermined posture.
A rotation fulcrum mechanism rotatably supports one point of the reflector, and the reflector is supported so as to be movable in and out of the housing by operating an adjustment member protruding outside the housing on a horizontal line passing through the fulcrum of this rotation fulcrum mechanism. A left-right adjustment mechanism,
A vertical adjustment mechanism that supports the reflector so that it can move forward and backward with respect to the housing by operating an adjustment member protruding from the housing on a vertical line passing through the support point of the left-right adjustment mechanism; The reflector is attached to the housing through an optical axis adjustment mechanism, which is composed of a direction adjustment mechanism and a correction mechanism that tilts the reflector using a vertical line passing through the fulcrum of the rotation fulcrum mechanism as the rotation center line. The automotive lamp is connected so as to be tiltable in the left-right direction, and the adjustment members of the left-right adjustment mechanism and the up-down adjustment mechanism include a rotating member rotatably supported by the housing, and a drive member attached to the adjustment mechanism. An optical axis adjustment mechanism for an automobile lamp, characterized in that the rotating member and the driving member are connected by a connecting means that transmits rotational motion and is detachable in the axial direction.