JPH03280302A - Headlamp for automobile - Google Patents

Abstract

PURPOSE:To facilitate adjustment of an irradiation angle in vertical direction by forming an opening for inserting a tool for vertical screw rotating operation, on a lamp body wall correspondent to a level, at the time of zero point adjustment, and by providing an inspection hole for meter reading, on the opening. CONSTITUTION:Since the tilt of a reflector 4 in a vertical direction is expressed in a level 70 in a bubble tube structure, the state of an irradiation angle of a headlamp in a vertical direction is confirmed based on the meter of the level 70, and the proper adjustment is carried out accordingly. A bubble tube holder 74 is oscillated around an oscillation fulcrum as a center by means of the turning of first and second vertical screws 78, 178 of the level 70, and the tilt of the bubble tube 80 to a horizontal surface is varied, and zero point adjustment of the level 70 can thus be carried out. An opening 102 for meter reading and for zero point adjustment, is formed on a body wall correspondent to the level 70 in this headlamp, and the zero point adjustment is carried out by inserting a tool for vertical screw operation from the opening 102 into a lamp body, and whereby operating the vertical screws 78, 178. Since the vertical screw of easier operation from the opening of the lamp body can be turned, zero point adjustment work is facilitated so much.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a movable reflector type automobile head equipped with a level for checking whether the vertical illumination angle of the headlamp is in the correct position. The present invention relates to a headlamp for an automobile that can easily adjust the irradiation angle of the headlamp to the normal position when the lamp is not in the normal position.

[Prior art and problem to be solved by the invention] It is possible to easily check the vertical inclination of the headlamp,
Various proposals have been made regarding headlamps equipped with a spirit level, since this can be easily adjusted using an aiming screw if the headlamp is tilted. As a prior art for this type of headlamp, there is U.S. Patent Application No. 1-70853, which is not yet publicly known. This is the 12th
As shown in the figure, reflector B is tiltably supported within lamp body A by an aiming mechanism (not shown), and a bubble tube structure level C is attached to the upper wall of lamp body A. Since the inclination state around the horizontal axis can be seen at the bubble position of the level C, the structure is such that the inclination state of the reflector B can be determined by reading the scale of the level C through a peephole provided in the lamp body A. A leaf spring E is interposed between one end of the level C and the reflector B, and an adjusting screw F is screwed into the reflector B.
The zero point of the spirit level C can be adjusted by rotating the . Further, an opening G is formed in the wall of the lamp body facing the level C, and a transparent cap H forming a viewing window is attached to this opening G. Then, read the bubble position in the water container through this peephole, and if reflector D is tilted in the vertical direction, use the aiming screw (not shown) to rotate reflector B around the horizontal axis. By tilting it, the reflector position is adjusted so that the spirit level C shows the level. When the headlamp is assembled to the vehicle body, the bubble in the spirit level is adjusted so that it indicates the zero point when the lamp's irradiation axis is in the correct position. To adjust the zero point, remove the cap H. This is done by inserting a screwdriver for rotating the adjusting screw through the opening G and rotating the adjusting screw F to change the inclination of the bubble tube.

The opening G formed in the lamp body A is large enough to read the scale of the spirit level C, and is located in a position where a tool (driver) for zero point adjustment can be inserted and operated. It is necessary to set it to a predetermined size. However, the adjustment screw F for zero point adjustment is provided at the end of the level C, and depending on the shape and size of the reflector B and lamp body A, it can be adapted to the reading of the scale of the level C and the zero point gm. In some cases, the opening G cannot be formed in a sufficient size or position. In such cases, there are problems such as the scale being difficult to read and the zero point adjustment being difficult. It is possible to prepare levels of various sizes in advance, but this is difficult from a cost standpoint.

The present invention has been made in view of the above problems.

The purpose is to provide an automobile headlamp with a level that can easily adjust the zero point not only for small to large headlamps but also for headlamps of various shapes such as headlamps with a small depth.

[Means to solve the problem]

In order to achieve the above object, in the automobile headlamp according to the present invention, the reflector in which the bulb is inserted is tilted vertically and horizontally within the lamp body, thereby adjusting the illumination angle of the headlamp. In a movable headlamp for an automobile with an adjustable reflector, a rectangular container-shaped casing that opens upward is attached to a predetermined position on the upper wall of the reflector, and a vial holder is attached to the upper opening of the casing. It consists of a straight level vial suspended and housed in a casing, and a level gauge with a vial structure is attached to measure the vertical inclination of the irradiation angle of the headlamp.

one end portion of the vial holder in the extending direction of the vial is supported in the vertical direction by an uneven lance engagement portion with the casing;
On the other hand, the other end of the vial holder in the extending direction of the vial is vertically slidably assembled to a first vertical screw for zero point adjustment that passes through the vial holder up and down and is screwed into the casing. a compression spring interposed between the first vertical screw and the first vertical screw;
A first zero point adjustment mechanism is provided in which the vial holder swings about the uneven lance engaging portion as a swing fulcrum by rotation of the first vertical screw.

Further, between the first vertical screw installation point and the swinging fulcrum of the vial holder, there is also a second vertical screw that passes through the vial holder up and down and is screwed into the casing, and a second vertical screw is provided between the vial holder and the casing. A second part is interposed to elastically support the bubble tube holder.
A second zero point adjustment mechanism consisting of a compression spring is provided.

An opening is formed in the wall of the lamp body corresponding to the spirit level into which a vertical screw turning operation tool can be inserted during zero point adjustment, and a removable transparent plate is formed in this opening to form a peephole for reading the scale. It is designed to be fitted with a cap.

[Effect]

The vertical inclination of the reflector is reflected in the bubble tube structure level, so you can check from the scale of the level whether the vertical illumination angle of the headlamp is appropriate, and if it is not, tilt the reflector. Adjust so that it is appropriate.

In addition, by rotating the first vertical screw and/or the second vertical screw of the spirit level, the vial holder swings around the swing fulcrum, changing the inclination of the vial with respect to the horizontal plane, and You can adjust the bubble position, that is, the zero point of the spirit level.

In a reflector-movable headlamp, an opening is formed in the wall of the lamp body that corresponds to the spirit level for reading the scale and adjusting the zero point, and the tool for vertical screw operation is inserted into the lamp body through this opening. and operate the first and/or second vertical screws for zero point adjustment to adjust the zero point.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

Figures 1 to 9 show a reflector-movable headlamp for an automobile, which is an embodiment of the present invention, and Fig. 1 shows a reflector-movable headlamp in which an illumination angle adjustment device is assembled. 2 is a plan view of the headlamp, and FIG. 3 is a partially cutaway horizontal sectional view of the headlamp (a sectional view taken along the line m-■ shown in FIG. 1). Fig. 4 is a longitudinal cross-sectional view of the headlamp (a cross-sectional view taken along line IV-IV shown in Fig. 1), and Fig. 5 is an assembly of a measuring device that measures the inclination of the irradiation angle in the left-right direction of the headlamp. (a cross-sectional view along the line ■-■ shown in Figure 1), Figure 6 is a vertical cross-section of the assembly part of the spirit level, which is a measuring device that measures the slope of the vertical illumination angle of the headlamp. Figure 7 is an exploded perspective view of the level, Figure 8 is an enlarged vertical sectional view of the level, and Figure 9 is a cross-sectional view of the level. (A cross-sectional view taken along line IX-IX shown in FIG. 8).

In these figures, reference numeral 2 denotes a container-shaped lamp body with a reflector 4 assembled therein, and a front lens 6 is assembled into the rectangular front opening of the lamp body 2 to form an integrated headlamp. There is.

The reflector 4 includes a ball joint 10 and an aiming screw 2, as shown in FIGS. 1, 3, and 4.
It is supported by 3 points of 0.30. The ball portion 12 side of the ball joint 10 is supported by the reflector 4 side, so that the reflector 4 can swing around this ball joint 10. Further, the aiming screws 20.30 are both rotatably supported by the lamp body 2, and are respectively screwed into nuts 22.32 on the reflector 4 side.
By rotating the aiming screw 20.30, the nut 22.32 is attached to the aiming screw 20.3.
by moving the reflector back and forth along 0.
The slope of 4 is changed. Note that reference numeral 14 is a socket for supporting the working part 12, and is fixedly supported by a bracket 16 fixed to the back side of the reflector 4. Also, the aiming screw 20.30 is screwed into the nut 22.
．． 32 is supported by brackets 26 and 36 provided on the back side of the reflector 4.

24.34 is a snap ring for fixing aiming screws 2o and 30 to the back wall of the lamp body.
Reference numeral 27.37 is an O-ring for sealing the aiming screw support, and reference numeral 28.38 is a flange protruding from the aiming screw 20.30.

In addition, the reflector 4 by the aiming screw 20
The support point (the threaded part of the aiming screw 20 and the nut 22) is perpendicular to the irradiation axis Q of the lamp, and the ball joint 10
located on the horizontal axis Lx passing through the aiming screw 3
The support point of the reflector 4 (the threaded portion of the aiming screw 30 and the nut 32) is located on a vertical axis Ly that is perpendicular to the irradiation axis of the lamp and passes through the ball joint 10. Therefore, by rotating the aiming screw 20, the reflector 4 is tilted around the vertical axis Ly, and the horizontal inclination of the reflector 4, that is, the horizontal illumination angle of the headlamp can be adjusted.

On the other hand, the rotation of the aiming screw 3o causes the reflector 4 to tilt around a horizontal axis 51 perpendicular to the vertical axis Ly, thereby adjusting the vertical inclination of the reflector 4, that is, the vertical illumination angle of the headlamp. I can do it. In this way, the two aiming screws 20 and 30 allow the tilting adjustment of the reflector 4, that is, the adjustment of the irradiation angle of the headlamp.

Further, in FIG. 3, reference numeral 40 denotes a bulb socket to which a bulb 41 is connected and integrated.

An opening 2a for attaching and removing a bulb socket is formed on the back side of the lamp body 2, and a bulb socket 40 is formed at the rear top of the reflector 4, passing through the opening 2a on the back side of the lamp body. It is attached to the socket hole 5. Further, a cylindrical rear protrusion 4A is formed around the protrusion wall 5A forming the socket hole 5, and the lamp body opening 2a is formed between the rear protrusion 4A and the peripheral edge of the lamp body opening 2a. A closing rubber cover 46 is attached. Inner peripheral edge 46 of this rubber cover 46
A is tightly pressed against the rear protrusion 4A of the lamp body by a locking cap 47 that is attached to the protrusion wall 5A and presses and fixes the bulb socket 40 into the socket hole 5 of the lamp body. The seal is secured. Note that the code 42 is the valve 41.
Reference numeral 44 indicates a cylindrical connector portion with connecting terminals provided therein.

In addition, in FIGS. 1 to 4, the reference numeral 3 indicates the lamp body 2.
A sealing agent 3a is loaded into this seal Wits, and the leg of the front lens 6 is engaged with the sealing groove formed at the periphery of the front opening of the lens. Also, code 7 is the front lens 6
This is a clip for mechanically fastening the lamp body 2 and the lamp body 2.

In FIGS. 1 to 3 and 5, reference numeral 50 denotes a first inclination am measuring device that measures the horizontal inclination of the reflector 4, that is, the horizontal inclination of the irradiation direction of the headlamp; It is assembled between the rear protrusion 20a of the left-right aiming screw 20 from the lamp body and the lamp body 10.

This measuring device 50 is screwed into a guide member 52 that is fixed to the lamp body 2 and extends parallel to the aiming screw 20, and a male threaded portion formed on the rear protruding portion 20a of the aiming screw 20, and Member 52
The slide member 54 is assembled to the guide member 52, and the slide member 54 slides back and forth along the guide member 52 by rotation of the aiming screw 20. A scale 53 is attached to the guide member 52, and when the horizontal inclination of the reflector 4, that is, the horizontal direction IN of the headlamp is at an appropriate position, the zero point of this scale 53 is set on the slide member. If the reflector 4 is set at the reference point 54a on the 54 side, if the reflector 4 is tilted in the left-right direction (if the irradiation angle in the left-right direction of the headlamp is not at an appropriate position), this tilt will cause the deviation of the scale 53. Hail as. Therefore, from the deviation of this scale (the scale indicated by the reference point 54a), it is possible to know the degree of inclination of the headlamp's irradiation axis Ω in the left-right direction.

By rotating the aiming screw 20 to eliminate the deviation of the scale, the irradiation angle of the lamp in the left and right direction can be adjusted. Further, the slide member 54 has a fifth
As shown in the figure, a screw support nut 55 (
55a is a female thread); a slide case 56 that is slidably assembled to both the screw support nut 55 and the guide member 52; and a slide case 56 that is rotatably supported by the slide case 56 and that 2
It consists of a zero point adjustment screw 58 that is screwed into a female threaded portion 55b of the scale, and by rotating the zero point adjustment screw 58, the zero point of the scale 53 is adjusted to match the reference point 54a. 1 (zero point scale 11) can be done.

In FIGS. 1 to 3 and 6 to 9, reference numeral 7
0 is a level that is a second inclination measuring device for measuring the vertical inclination of the reflector 4, that is, the vertical inclination of the irradiation angle of the headlamp, and is formed in the right corner area of the upper wall of the reflector 4. It is placed and fixed on the recessed portion 4b.

The level 70 has an integrated structure in which a straight bubble tube 80 is housed in a level casing 71, and is fixed to the upper part of the reflector upper wall by four mounting screws 73a. The level casing 71 is made of aluminum die-casting and includes a rectangular container-shaped casing body 72 that opens upward, and four bracket parts 73 extending laterally from the casing body 72. The casing body 72 is sized to accommodate a bubble tube 80, which will be described later, and the bracket portion 73 has a mounting screw 73.
An insertion hole 73b into which the hole 73a is inserted is formed. on the other hand,
A horizontally extending portion 4B extending rearward is formed at the level attachment position on the upper wall of the reflector 4, and a boss portion 4C serving as a seat for supporting the level is formed on this horizontally extending portion 4B. Protruding parts are formed. A hole 4G for screw insertion is formed in the upper end surface of each boss portion, and a mounting screw 73 is provided here.
The bracket part 73 is fixed by screwing in a. Reference numeral 73c is a rubber gasket attached to the insertion hole 73b, which is used to avoid contact between the iron mounting screw 73a and the aluminum bracket part 73 and prevent electrolytic corrosion that may occur between the two. be. Reference numeral 4D indicates a reinforcing rib of the extending portion 4B.

As described above, the bracket part 73 is supported by the boss part 4C, and the level casing 71 is placed in a floating state with a gap S apart from the extension part 4B. Due to the insulation effect of the valve 41
The heat from the reflector side caused by the lighting of the bulb is difficult to be transferred, and the temperature of the bubble tube 80 is suppressed from rising due to the heat generated by the bulb. Further, since the casing 71 is made of aluminum and has a good heat transfer coefficient, the heat transferred from the boss portion 4C is uniformly transferred to the entire casing 71, and also to the bubble tube 80 inside the casing.

As will be described further below, the bubble tube 80 is connected to the casing body 7.
2, a heat insulating air layer S2 is formed around the bubble tube 80, and the heat transferred to the bubble tube 80 is further reduced and made uniform. Therefore, there is no problem such as convection caused by a temperature difference in the liquid filled in the bubble tube, causing bubbles to move and making accurate measurements impossible.

The upper opening of the casing body 72 has a bubble pipe 8 on the back side.
A lid body 74, which is a bubble tube holder, is attached and fixed. The lid body 74 is made of highly elastic synthetic resin such as U polymer or polyacetal, and a window 79 is formed in the center to expose the scale forming surface of the bubble tube 80, and is used for engagement of the uneven lance and zero point adjustment. is located on the casing body 72 by a first vertical screw 78 . That is, a rectangular opening 72b is formed in the side wall 72a at the rear end of the casing body 72, and a hook 75a is formed at the rear end of the lid 74, protruding vertically downward and engaging with the opening 72b on the casing side. is formed. In addition, at the rear end of the lid, on both sides of the hook 75a, there are sulin l-75b.
A pair of hook portions 75c are formed extending apart from each other. Then, when the hook 75a engages with the opening 72b while the hook 75c is supported on the side wall upper end surface 72a2 by sandwiching the side wall upper end protrusion 72a1 at the rear end of the casing, the eighth
As shown in the figure, the hook 75c and the hook 75a are elastically deformed in opposite directions in a cantilever shape, and the rear end of the lid is prevented from being pulled out in the vertical direction.

It is designed to be elastically supported in the vertical direction.

In this way, the side wall 72a at the rear end of the lid and the rear end of the casing
A convex-concave lance elastic engagement section is formed between the openings 72b, hooks 75a, and hooks 75c, which prevent the rear end of the lid from being pulled out and elastically support them.

On the other hand, a screw insertion hole 74a is formed at the front end of the lid body 74, and a boss portion 76 having a screw hole 76a is formed protruding from the bottom front portion of the casing body 72. And around the boss part 76 is a compression coil spring 77.
is arranged, and the front end of the lid body and the boss part 76 are screwed together by a first vertical screw 78 for zero point adjustment,
As a result, the front end portion of the lid body is elastically supported in the vertical direction with respect to the casing body 72. Also, this vertical screw 7
By adjusting the screwing amount of 8, the inclination of the lid 74, that is, the inclination of the bubble tube 80 (the position of the bubble), which will be described later, can be adjusted (
(You can adjust the zero point of the spirit level).

That is, the uneven lance engaging portion supports the rear end of the lid 74 and the compression coil spring 7 supports the front end of the lid 74.
7 and the first vertical screw 78 constitute a first zero point adjustment mechanism that adjusts the inclination state of the bubble tube. Reference numeral 78a is a rubber material that is integrally bonded to the inner peripheral surface of the recess formed in the boss portion 76a for inserting the vertical screw, and is used to prevent electrolytic corrosion between the iron vertical screw 78 and the aluminum boss portion 76. It is something.

Further, a lateral extending portion 174 with a screw insertion hole 174a is formed protruding from one side edge of the lid body 74, and a position corresponding to this lateral extending portion 174 of the casing body 72 is A boss portion 176 with a screw hole 176a is formed to protrude. That is, a part of the side wall of the casing body 72 is cut out, the bottom surface extends laterally from the cutout 173, and a boss portion 176 is formed to protrude from the lateral extension 172 on the casing side. . A compression coil spring 177 is also arranged around the boss portion 176, and the lid side extension portion 174 and the boss portion 176 are screwed together by a second vertical screw 178 for zero point adjustment. One side edge is also elastically supported in the vertical direction with respect to the casing body 72. and vertical adjustment screw 178
The zero point of the spirit level can also be adjusted by adjusting the screw-in amount.

That is, the second vertical screw 178 and the compression coil spring 177 constitute a second zero point adjustment mechanism, and regardless of whether the first vertical screw 78 or the second vertical screw 178 is used, the zero point of the spirit level will not be adjusted. Adjustment is possible.

Further, a pair of vertical protrusions 92° 92 extending downward are formed on the side edge of the lid body opposite to the side on which the lateral extension portion 174 is formed. On the other hand, a slide guide 94 is formed protruding from the outside of the side wall of the casing 71 and is engaged with the vertical projection 92 in the vertical direction.

The vertical projections 92.92 and the slide guide 94 function as a swing guide for the lid 74 during zero point adjustment using the second vertical screw 178.

That is, since the second vertical screw 178 is provided on the side of the lid, a torsional moment acts on the lid 74 by rotating the second vertical screw 178, causing the lid 74 to twist. There is a risk that the product may be swayed to an unsteady state. For this reason, a swing guide mechanism consisting of vertical protrusions 92, 92 on the lid side and a slide guide 94 on the casing side is provided at a position facing the second vertical screw 178, which is the point of force application, so that the lid body 74 can be It is designed to be able to swing without being twisted.

A rectangular window 79 is formed in the center of the lid 74, and a clamping piece 81 is formed protruding from the periphery of the window 79 on the back side of the lid. A bubble tube 80 is held in place. The scale 84 forming surface side of the bubble tube 80 is exposed to the window 79. code 8
Reference numeral 3 indicates a bubble, and reference numeral 84a indicates a scale zero point position.

The bubble tube 80 is located within the casing body 72.
It is supported in a suspended state by the clamping piece 81 of the lid body 74. That is, the casing body 72 and the bubble tube 80
A heat insulating air layer S□ is formed between the bubble tube 8
It is difficult for the heat from the casing side to be transferred to the 0. Further, the rear end portion of the lid body 74 is supported on the upper end surface 72a of the side wall (see FIG. 7), which is higher than the left and right side walls of the casing.
The front end of 4 is a compression coil spring 77 and a vertical screw 78.
Since the casing body 72 and the lid body 74 are elastically supported, a gap is formed between the casing body 72 and the lid body 74.

Therefore, the inside of the casing 71 has a gap between it and the lid 74,
Furthermore, the opening 72b of the rear end side wall 72a of the casing main body
It is opened to the outside of the casing through a notch 173 in the side wall. Therefore, air outside the casing can freely flow in and out of the heat insulating air layer S, and there is no problem that heat is trapped in the heat insulating air layer S and adversely affects the bubble tube 80.

Further, as shown in FIG. 6, a peephole 100 for reading the scale of the level 70 is formed in a region of the lamp body 2 corresponding to the level 70. Peephole 10
0 has a diameter smaller than the total length of the spirit level 70, and has a structure in which a transparent cap 104 is inserted into an opening 102 formed in the lamp body 2. When the cap 104 is removed,
A tool (driver) for vertical screw operation from the opening 102
The vertical screw 78 or 178 can be rotated by inserting the vertical screw 78 or 178.

Next, the case of assembling this level 70 to the reflector 4 will be explained with reference to FIG.

First, by inserting the vial 80 from the tip side of the clamping piece 81, the vial 80 is held by the lid 74. Then, the rear end of the lid 74 is lance-engaged with the side wall 72a at the rear end of the casing 71, and the front end and side edge of the lid are screwed to the boss portions 76, 176 by vertical screws 78, 178, respectively. , are integrated as a spirit level 70. Next, the bracket portion 73 of the casing 71 is aligned with the boss portion 4C on the reflector side, and the bracket portion 73 is screwed to the boss portion 4C using the mounting screw 73a. After the level 70 has been attached to the reflector upper wall, the vertical inclination of the reflector 4 is at the proper position.
That is, the vertical screws 78, 178 are used to adjust the bubble 83 of the level 70 to be at the scale zero position 84a of the linear scale 84 when the irradiation axis Q is at the proper position in the vertical direction. Note that the adjustment by the vertical screw 78 is temporary, and the adjustment by the vertical screw 1
The adjustment by 78 is secondary and the vertical screw 178
are loosened to an extent that does not interfere with adjustment using the vertical screw 78. Next, the reflector whose irradiation axis has been adjusted in this way is assembled to the lamp body and integrated with the headlamp.

Next, a procedure for adjusting the inclination measuring device 50, 70 performed when the headlamp is assembled to the vehicle body, and a procedure for adjusting the irradiation angle of the headlamp thereafter will be described.

As a single headlamp, when the zero point position of the scale of the first inclination measuring device 50 coincides with the position of the reference line 54a on the slide case 56 side, the light distribution characteristics in the left and right direction of the headlamp are at the appropriate position, and the second Level 70 which is an inclination measuring device
When the bubble 83 reaches the zero point [84a] of the linear scale 84, the light distribution characteristics in the vertical direction of the headlamp are set to the appropriate position.

and these first and second inclinometers 50.70
When a headlamp with a built-in headlamp is assembled to the vehicle body, 1
Due to various errors, the scale display of each inclinometer is not in the correct position. Therefore, it is necessary to adjust the scales of the first and second inclination measuring devices to an appropriate state.

Next, an example of this method for adjusting the upper MJ8 will be explained.

In the first inclination measurement device 50, the vehicle is placed on a horizontal location, a light distribution screen is set at a predetermined position in front of the vehicle, and the headlamps are turned on. Then, the aiming screw 20 is rotated to adjust the light distribution of the headlamp to a predetermined position in the left and right direction on the light distribution screen (so that the irradiation axis 2 of the headlamp coincides with the axle). However, at this time, the reference line position 54a does not match the scale zero point position due to variations in the lamp mounting surface on the vehicle body side. Therefore, the zero point adjustment screw 58 is rotated, the slide case 56 is moved back and forth in the axial direction, and the first inclination a is adjusted.
The zero point position of the scale of the 11 meter 50 is made to coincide with the reference line position 54a. In this way, when the lateral illumination angle of the headlamp is at an appropriate position, the scale of the reference line position 54a of the first inclined side 50 meter is adjusted so as to display the zero point.

On the other hand, in the level 70 which is the second inclination measuring device,
Rotate the aiming screw 30 to adjust the hot zone of the headlamp to a predetermined position on the light distribution screen in the vertical direction.

However, due to variations in the lamp mounting surface on the vehicle body side, the bubble position may not match the zero point position 84a of the scale 84. In such a case, opening 1 of the lamp body
Rotate the first vertical screw 78 using the tool inserted from 02 to adjust the bubble 83 to be at the zero point position 84a of the scale. Note that if the first vertical screw 78 is difficult to rotate.

The bubble position is adjusted by rotating the second vertical screw 178. In this way, when the vertical illumination angle of the headlamp is at an appropriate position, the bubble 83 of the level 70, which is the second inclination measuring device, is adjusted so as to display the zero point 84a of the scale. In this embodiment, it is difficult to rotate the first vertical screw 78 from the opening 102 due to the positional relationship between the opening 102 formed in the lamp body and the first vertical screw 78. Zero point adjustment is performed by rotating the vertical screw 178 to swing the lid 74.

After that, the user must adjust the illumination angle of the headlamp. Then, from the rear upper part of the lamp, the protector 50,
70, the reference line position 54 of the first inclination measuring device 50
a does not indicate the zero point position of the scale, or the bubble 83 of the level 70, which is the second inclination measuring device, does not indicate the zero point position 8 of the scale.
4a, the amount of inclination of the reflector 4 in the horizontal or vertical direction can be calculated based on the amount of deviation.
That is, it is possible to read the deviation in the illumination angle of the headlamp in the left-right direction or the vertical direction. In such a case, rotate the aiming screws 20 or 30, respectively, so that the scale zero point position of the first inclination measuring device 50 comes to the reference line position 54a, and the aiming screw 20 or 30 of the second inclination measuring device The level 70 is adjusted so that the bubble 83 is at the scale zero point position 84a. In this way, the illumination angle of the headlamp can be adjusted.

Figures 10 and 11 show the main parts of a second embodiment of the present invention, and Figure 10 is an exploded perspective view of a spirit level, which is a measuring device for measuring the vertical inclination of the irradiation angle of the headlamp. figure,
FIG. 11 is a horizontal sectional view of the swing guide structure of the lid.

In these figures, the reference numeral 70A indicates a spirit level having a swing guide structure different from the spirit level 70 of the first embodiment. Reference numerals 96.96 denote a pair of vertical protrusions that are formed at the window periphery of the lid body 74 at positions corresponding to the second vertical screw 178, sandwiching the window 79;
is engaged with the inner side wall of the casing body 72, and the second
By rotating the vertical screw 178, the lid body 74 is moved to a pivot point (
The lid 74 can be rocked without twisting when the lid 74 is rocked relative to the uneven lance engagement portion with the casing side wall at the rear end of the lid. Reference numeral 97 denotes a vertical rib (11th
(see figure).

Further, a bifurcated screw insertion portion 73d is formed at the tip of the bracket portion 73, and a rubber gasket 73c is attached to this screw insertion portion 73d.

Further, the peephole 100 formed in the lamp body 2 has a size tJs smaller than the total length of the spirit level 70A, as in the first embodiment described above. For this reason, the opening 10
Although it is troublesome to rotate the 10th vertical screw 78 using a tool for vertical screw rotation from 2 to 2, it is easy to rotate the first vertical screw 178. By rotating the screw 178, the zero point of the spirit level 70A is adjusted.

The rest is the same as the first embodiment described above.

By assigning the same reference numerals, the explanation thereof will be omitted.

〔Effect of the invention〕

As is clear from the above description, in the automobile headlamp according to the present invention, the vertical inclination of the reflector with respect to the lamp body is determined by a level, and from this level, the amount of vertical inclination of the reflector, i.e. , it is possible to read the amount of vertical inclination of the illumination angle of the headlamp.

Then, to adjust the vertical illumination angle of the headlamp, make sure that the bubble on the spirit level is at the specified position.

Since aiming can be adjusted by tilting the reflector in the vertical direction, anyone can easily adjust the illumination angle of the headlamp in the vertical direction.

In addition, the zero point adjustment can be performed using either the first vertical screw or the second vertical screw, so it is only necessary to turn the vertical screw that is easier to operate from the opening of the lamp body.
This makes the zero point adjustment work that much easier. Furthermore, if the second vertical screw is used to adjust the zero point, the opening formed in the lamp body may be smaller than the overall length of the level, which increases the degree of freedom in the position of the opening and the installation position of the level. It has the advantage of being high.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment in which the present invention is applied to a reflector-movable headlamp. FIG. 2 is a front view of the headlamp, FIG. 2 is a plan view of the headlamp, and FIG. 3 is a line m-- m
4 is a sectional view taken along the line IV-IV shown in FIG. 1, and FIG. 5 is a longitudinal sectional view of the first inclination measuring device taken along the line V-■ shown in FIG. 1. A cross-sectional view, FIG. 6 is a longitudinal cross-sectional view of the area around the assembly of the level, which is the second inclination measuring device, and a cross-sectional view taken along the line VI-Vl shown in FIG. 1, and FIG. An exploded perspective view of a spirit level, which is a measuring device, FIG. 8 is an enlarged vertical cross-sectional view of the spirit level, and FIG. 9 is a cross-sectional view of the spirit level (a cross-sectional view along the line u-■ shown in FIG. 8). , FIG. 10 shows the second embodiment of the present invention.
FIG. 11 is a horizontal sectional view of the level in this embodiment, and FIG. 12 is a vertical sectional view of the level where the level is arranged in a conventional headlamp. 2... Lamp body which is a reference member, 4... Reflector which is a tilting member, 4B... Rear extension part of the reflector, 4C... Boss part which is a supporting part of a spirit level, 6...・Front lens, 10... Ball joint as a swinging fulcrum of the reflector, which is a tilting member, 20... Aiming screw 30, for adjusting the tilting of the reflector, which is a tilting member, in the left-right direction. Aiming screw 50 for adjusting the tilt of the reflector in the vertical direction...A first inclination measuring device that measures the inclination of the irradiation angle in the left and right direction of the headlamp. 70.70A: A level that is a second inclination measuring device that measures the inclination of the vertical illumination angle of the headlamp. 72... Casing main body of a spirit level, 74... Lid body which is a bubble tube holder, 72b... An opening on the casing side forming a part of the uneven lance retaining part. 75a...Hook on the lid side forming a part of the uneven lance engaging part, 75c...Latching part on the cover side forming a part of the uneven lance engaging part, 77...First spring Compression coil spring as a member, 78... First vertical screw for zero point adjustment, 80... Straight vial. 83... Air bubble, 100... Peephole, 102... Opening, 104... Transparent cap, 177... Compression coil spring as second spring member, 178... Zero point adjustment Second vertical screw, Lx...
Horizontal axis, ty... Vertical axis, ρ... Headlamp irradiation axis. Applicant: Koito Manufacturing Co., Ltd.

Claims (1)

[Claims] (1) In an automobile headlamp with a movable reflector, the irradiation angle of the headlamp can be adjusted by tilting the reflector in which the bulb is inserted in the lamp body vertically and horizontally, respectively, the upper part of the reflector. At a predetermined position on the wall, there is a rectangular container-shaped casing that opens upward, and a straight vial that is housed within the casing and is suspended from a vial holder attached to the upper opening of the casing. , a level with a vial structure for measuring the vertical inclination of the irradiation angle of the headlamp is attached, and one end of the vial holder in the extending direction of the vial is connected to the casing by a concave-convex lance engagement part. supported in the vertical direction, while the other end of the vial holder in the extending direction of the vial is
It is attached so as to be slidable in the vertical direction to the first vertical screw for zero point adjustment which passes through the bubble tube holder up and down and is screwed into the casing, and the first vertical A first screw is resiliently supported by a spring bias on the head of the screw, and the vial holder swings about the uneven lance engaging portion as a swing fulcrum by rotation of the first vertical screw.
A zero point adjustment mechanism is provided between the first vertical screw installation point and the swinging fulcrum of the vial holder, and a second screw that passes through the vial holder up and down and is screwed into the casing.
and a second compression spring interposed between the vial holder and the casing to resiliently support the vial holder; An opening is formed into which a vertical screw rotation operation tool can be inserted during zero point adjustment, and a removable transparent cap forming a viewing window for reading the scale is attached to this opening. Car headlamps.