JPH0760608B2 - Car headlamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an automobile head of a reflector movable type equipped with a level for confirming whether the vertical irradiation angle of a headlamp is in a normal position. The present invention relates to a headlamp for a vehicle, which can easily adjust the irradiation angle of the headlamp to a regular position when the lamp is not in the regular position.

[Problems to be Solved by Prior Art and Invention]

Since it is possible to easily check the inclination of the headlamp in the vertical direction, and if it is inclined, it is possible to easily adjust it using an aiming screw, so there are various proposals for headlamps equipped with a spirit level. Has been done. As a prior art of this type of headlamp, there is Japanese Patent Application No. 1-70853 which has not been publicly known. This is the first
As shown in FIG. 2, a reflector B is tiltably supported by an aiming mechanism (not shown) in the lamp body A, a bubble level C is attached to the upper wall of the lamp body A, and the reflector B is placed horizontally. Since the tilted state around the axis appears at the bubble position of the level C, the tilted state of the reflector B is known by reading the scale of the level C from the observation window D provided in the lamp body A.
Further, a leaf spring E is provided between one end of the level C and the reflector B.
Is provided, and the zero point of the electronic level C can be adjusted by rotating the adjusting screw F screwed into the reflector B. An opening G is opened in the wall of the lamp body facing the level C, and a transparent cap H forming a peephole D is attached to the opening G. Then, the bubble position of the level is read from the sight window D, and when the reflector D is tilted in the vertical direction, the aiming screw (not shown) is used to tilt the reflector B around the horizontal axis, The level of the reflector C is adjusted so that the level C is horizontal. Then, with the headlamp mounted on the vehicle body, the bubble of the electronic level is adjusted so as to show the zero point when the irradiation axis of the lamp is at the proper position. For this zero point adjustment, the cap H is removed, The adjustment screw F is inserted through the opening G, and the adjustment screw F is rotated to change the inclination of the bubble tube.

The opening G formed in the lamp body A in this way
Needs to have a size such that the scale of the level C can be read, and a position where a tool (driver) for adjusting the zero point can be inserted to operate and a predetermined size. However, the adjusting screw F for adjusting the zero point is provided at the end of the electronic level C, and depending on the shape and size of the reflector B and the lamp body A, it can be applied to read the scale of the electronic level C and adjust the zero point. In some cases, the opening G cannot be formed in a large size or position. In such a case, there are problems that the scale is difficult to read and it is difficult to adjust the zero point. In addition, it is sufficient to prepare a level of various sizes in advance,
It is difficult in terms of cost.

The present invention has been made in view of the above problems, and its object is to easily perform zero adjustment not only for small to large headlamps but also for headlamps of various shapes such as headlamps with a small depth. It is to provide a headlamp for a vehicle with a level.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in a vehicle headlamp according to the present invention, a reflector in which a bulb is inserted is tilted in a vertical direction and a horizontal direction in a lamp body, thereby changing an irradiation angle of the headlamp. An adjustable reflector movable automobile headlamp, which is suspended and supported by a rectangular container-shaped casing that opens upward at a predetermined position on the upper wall of the reflector, and a bubble tube holder assembled in the upper opening of the casing. And a straight bubble tube housed in the casing, and a bubble tube structure level for measuring the tilt angle of the headlamp in the vertical direction is attached.

One end of the bubble tube holder in the bubble tube extending direction is supported in the vertical direction by a concave-convex lance engagement portion with the casing,
On the other hand, the other end of the bubble tube holder in the extending direction of the bubble tube is vertically slidably assembled to the first vertical screw for adjusting the zero point that vertically penetrates the bubble tube holder and is screwed into the casing. A compression spring interposed between the first vertical screw and the head of the first vertical screw to urge it elastically,
A first zero-point adjusting mechanism is provided in which the bubble tube holder swings with the concave-convex lance engaging portion as the swing fulcrum by the rotation of the first vertical screw.

Further, also between the first vertical screw disposition point and the swing fulcrum of the bubble tube holder, a second vertical screw that vertically penetrates the bubble tube holder and is screwed into the casing, and between the bubble tube holder and the casing. The 2nd which is interposed and elastically supports the vial holder
And a second zero-point adjusting mechanism including a compression spring.

An opening through which a vertical screw turning operation tool can be inserted when adjusting the zero point is formed in the wall of the lamp body corresponding to the level, and a removable transparent window forming a peep window for reading the scale is formed in this opening. The cap is attached.

[Action]

Since the vertical tilt of the reflector appears on the bubble level structure, it is possible to confirm from the scale of the level that the vertical irradiation angle of the headlamp is correct.If it is not correct, tilt the reflector for proper adjustment. Adjust so that

By rotating the first vertical screw and / or the second vertical screw of the level, the bubble tube holder swings around the swinging fulcrum, the inclination of the bubble tube with respect to the horizontal plane changes, and The bubble position can be adjusted, that is, the zero point of the level can be adjusted.

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

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 9 show a reflector movable type automobile headlamp according to an embodiment of the present invention, and FIG. 1 is a front view of the reflector movable type headlamp in which an irradiation angle adjusting device is assembled. 2 and 3 are a plan view of the headlamp, FIG. 3 is a horizontal sectional view of the headlamp (a sectional view taken along line III-III shown in FIG. 1) showing a part of the headlamp, and FIG. The figure shows a vertical sectional view of the same headlamp (a sectional view taken along the line IV-IV shown in FIG. 1), and FIG. FIG. 6 is a plan view (a cross-sectional view taken along the line V-V shown in FIG. 1), and FIG. Line VI shown in Fig. 1
Fig. 7 is an exploded perspective view of the spirit level, Fig. 8 is an enlarged vertical sectional view of the spirit level, and Fig. 9 is a cross sectional view of the spirit level (line IX- shown in Fig. 8). It is a sectional view taken along line IX).

In these drawings, reference numeral 2 is a container-shaped lamp body in which a reflector 4 is assembled, and a front lens 6 is assembled in a rectangular front opening of the lamp body 2 to be integrated as a headlamp. .

The reflector 4 includes a ball joint 10 and aiming screws 20, 3 as shown in FIGS. 1, 3, and 4.
It is supported by three points: 0. The ball portion 12 side of the ball joint 10 is supported by the reflector 4 side, and the reflector 4 can swing about the ball joint 10. The aiming screws 20 and 30 are both lamp body 2.
It is rotatably supported by the aiming screw 2 and is screwed into the nuts 22 and 32 on the reflector 4 side.
The nuts 22 and 32 are moved back and forth along the aiming screws 20 and 30 by rotating the 0 and 30, whereby the inclination of the reflector 4 is changed.
Reference numeral 14 is a socket that supports the ball portion 12, and is fixedly supported by a bracket 16 fixed to the back side of the reflector 4. Further, the nuts 22 and 32 with which the aiming screws 20 and 30 are screwed are supported by brackets 26 and 36 provided on the back surface of the reflector 4. Reference numerals 24 and 34 are snap rings for fixing the aiming screws 20, 30 to the rear wall of the lamp body, reference numerals 27, 37 are O-rings for sealing the aiming screw bearing portion, and reference numerals 28, 38.
Is a flange portion protruding from the aiming screws 20 and 30.

In addition, the supporting point of the reflector 4 by the aiming screw 20 (a screwing portion of the aiming screw 20 and the nut 22)
Is located on a horizontal axis Lx that is orthogonal to the lamp irradiation axis 1 and that passes through the ball joint 10. The aiming screw 30 supports the reflector 4 (the aiming screw 30 and the nut).
The threaded portion 32 is orthogonal to the irradiation axis 1 of the lamp and is located on the vertical axis Ly passing through the ball joint 10. Therefore, the turning of the aiming screw 20 causes the reflector 4 to tilt around the vertical axis Ly, so that the reflector 4 tilts in the left-right direction.
That is, the irradiation angle of the headlamp in the left-right direction can be adjusted. On the other hand, by turning the aiming screw 30,
The reflector 4 tilts around a horizontal axis Lx orthogonal to the vertical axis Ly, and the tilt of the reflector 4 in the vertical direction, that is, the irradiation angle of the headlamp in the vertical direction can be adjusted. Thus, the tilting adjustment of the reflector 4, that is, the irradiation angle of the headlamp can be adjusted by the two aiming screws 20 and 30.

Further, in FIG. 3, reference numeral 40 is a valve socket in which a valve 41 is connected and integrated. An opening 2a for attaching and detaching a bulb socket is formed on the back side of the lamp body 2, and the bulb socket 40 is formed on the rear top of the reflector 4 through the back side opening 2a of the lamp body. It is attached to the socket hole 5. A cylindrical rear projection 4A is formed around the projecting wall 5A forming the socket hole 5, and an opening 2a of the lamp body is provided between the rear projection 4A and the peripheral edge of the lamp body opening 2a. A closing rubber cover 46 is attached. This rubber cover 46
The inner peripheral edge portion 46a of the lamp body is attached to the protruding wall 5A, and the locking cap 47 presses and fixes the bulb socket 40 to the socket hole 5 of the lamp body.
It is pressed and closely attached to 4A, which secures the seal of the rubber cover mounting part. Reference numeral 42 is a valve 41.
Reference numeral 44 denotes a cylindrical connector portion in which connection terminals are provided.

Further, in FIGS. 1 to 4, reference numeral 3 is a lamp body 2.
A seal groove 3a is formed in the peripheral edge of the front opening of the front side, and the sealing agent 3a is loaded in the seal groove 3 to engage the legs of the front lens 6. Reference numeral 7 is a clip for mechanically fastening the front lens 6 and the lamp body 2.

In FIGS. 1 to 3 and 5, reference numeral 50 is a first inclination measuring device for measuring the inclination of the reflector 4 in the left-right direction, that is, the inclination of the headlamp in the irradiation direction. The aiming screw 20 is assembled between the lamp body 10 and a rear protruding portion 20a from the lamp body. The measuring device 50 is fixed to the lamp body 2, and is a guide member 52 extending in parallel with the aiming screw 20.
And a slide member 54 screwed onto a male screw portion formed on the rearward projecting portion 20a of the aiming screw 20 and assembled to the guide member 52, and the slide member 54 is rotated by the turning of the aiming screw 20. Guide member 52
Slide back and forth along. Scale 53 on the guide member 52
When the inclination of the reflector 4 in the left-right direction, that is, the irradiation angle of the headlamp in the left-right direction is at a proper position, the zero point of the scale 53 is set as a reference point on the slide member 54 side.
If it is set to 54a, when the reflector 4 is tilted in the left-right direction (when the irradiation angle of the headlamp in the left-right direction is not at a proper position), this tilt appears as a deviation of the scale 53. Therefore, the degree of inclination of the irradiation axis 1 of the headlamp in the left-right direction can be known from the deviation of the scale (the scale indicated by the reference point 54a), and the aiming screw 20 can be rotated to eliminate the deviation of the scale. The irradiation angle of the lamp in the left-right direction can be adjusted. As shown in FIG. 5, the slide member 54 includes a screw support nut 55 (reference numeral 55a is a female screw portion) screwed to the aiming screw 20 (rear protruding portion 20a), a screw support nut 55, and a guide member. A slide case 56 slidably attached to both of the two 52 and a zero adjustment screw 58 rotatably supported by the slide case 56 and screwed with the second female screw portion 55b of the screw support nut 55. By rotating the zero point adjusting screw 58, the zero point of the scale 53 can be adjusted (zero point adjustment) so as to coincide with the reference point 54a.

In FIGS. 1 to 3 and FIGS. 6 to 9, reference numeral 70
Is a level, which is a second tilt measuring device for measuring the vertical tilt of the reflector 4, that is, the vertical tilt of the irradiation angle of the headlamp, and is a recess formed in the right corner area of the upper wall of the reflector 4. It is placed and fixed on 4b.

The level 70 has a structure in which a linear bubble tube 80 is housed and integrated in a level casing 71, and is attached and fixed above the upper wall of the reflector by four attaching screws 73a. The level casing 71 is made of aluminum die-cast, and has a casing body 72 in the shape of a rectangular container that opens upward,
It is formed by four bracket portions 73 extending laterally from the casing body 72. The casing body 72 is sized to accommodate the bubble tube 80 described later,
The bracket portion 73 has an insertion hole 73b into which the mounting screw 73a is inserted.
Are formed. On the other hand, a horizontal extending portion 4B extending rearward is formed at a level attachment position on the upper wall of the reflector 4, and a boss portion 4C which serves as a seat surface for carrying the level is provided on the horizontal extending portion 4B. It is formed with four protrusions. A hole 4C ₁ for screw insertion is formed on the upper end surface of each boss portion, and the bracket portion 73 is
Is fixed. Reference numeral 73c is a rubber packing mounted in the insertion hole 73b, and is for avoiding contact between the iron mounting screw 73a and the aluminum bracket portion 73 to prevent electric contact that may occur between them. . Reference numeral 4D is an extension part
It is a rib for reinforcement of 4B.

In this way, the bracket portion 73 is carried by the boss portion 4C, and the level casing 71 is arranged in a state of floating with a gap S from the extending portion 4B. For this reason, heat of the reflector side due to lighting of the valve 41 is difficult to be transferred to the level casing 71 due to the heat insulating effect of the gap S, and the temperature rise of the bubble tube 80 due to the heat generated by the valve is suppressed.
Further, since the casing 71 is made of aluminum and has a high heat transfer coefficient, the heat transferred from the boss portion 4C is evenly transferred to the entire casing 71, and is also transferred to the bubble tube 80 in the casing. Further, as will be described later, since the bubble tube 80 is suspended and supported in the casing body 72,
An adiabatic air layer S _Z is formed around 80, and the heat transferred to the bubble tube 80 is further reduced and made uniform. Therefore, there is no problem that convection occurs in the filling liquid in the bubble tube due to the temperature difference, the bubbles move, and accurate measurement cannot be performed.

A lid 74, which is a bubble tube holder with a bubble tube 80 attached to the back side, is attached and fixed to the upper opening of the casing body 72. The lid 74 is made of a highly elastic synthetic resin such as U polymer or polyacetal, and a window 79 is formed in the central portion for exposing the scale forming surface of the bubble tube 80, for engaging the concave and convex lances and adjusting the zero point. Is mounted on the casing body 72 by means of a first vertical screw 78 of. That is, the casing body
A rectangular opening 72b is formed in the side wall 72a at the rear end of 72, and a hook 75a that protrudes vertically downward and is engaged with the opening 72b on the casing side is formed at the rear end of the lid 74. There is.
Also, at the rear end of the lid, on both sides of the hook 75a,
A pair of hook portions 75c are formed to extend so as to separate the slits 75b. And while this engaging section 75c is supported on the side wall upper end surface 72a ₂ by sandwiching the side wall upper protrusion 72a ₁ of the casing rear end, the hook 75a is engaged with the opening 72b, as shown in FIG. 8 In addition, the hooking portion 75c and the hook 75a are elastically deformed in a cantilever manner in mutually opposite directions, so that the rear end of the lid body is prevented from coming off in the vertical direction and is elastically supported in the vertical direction. Has become. In this way, between the rear end of the lid and the side wall 72a at the rear end of the casing, an unevenness formed by an opening 72b for preventing the rear end of the lid from coming off and elastically supporting it, a hook 75a, and a hook 75c. A lance elastic engagement portion is formed.

On the other hand, a screw insertion hole 74a is opened in the front end portion of the lid 74,
In addition, a screw hole 76a is provided at the front of the bottom surface of the casing body 72.
An open boss portion 76 is formed so as to project. A compression coil spring 77 is arranged around the boss portion 76, and the front end portion of the lid body and the boss portion 76 are screwed together by a first vertical screw 78 for adjusting the zero point. It is elastically supported in the vertical direction with respect to the main body 72. By adjusting the screwing amount of the vertical screw 78, the inclination of the lid 74, that is, the inclination of the bubble tube 80 (the position of the bubble) described later can be adjusted (the zero point of the level can be adjusted). That is, the concave-convex lance engaging portion that supports the rear end of the lid 74 and the compression coil spring that supports the front end of the lid 74.
77 and the first vertical screw 78 constitute a first zero-point adjusting mechanism for adjusting the tilted state of the bubble tube. Reference numeral 78a is a rubber material that is integrally bonded to the inner peripheral surface of the vertical screw-threaded recess formed in the boss portion 76a to prevent electric contact between the iron vertical screw 78 and the aluminum boss portion 76. It is a thing.

Further, a side extending portion 174 having a screw insertion hole 174a formed therein is formed so as to project from one side edge portion of the lid body 74, and on the other hand, at a position corresponding to the side extending portion 174 of the casing main body 72. Screw hole 1
A boss portion 176 having an opened 76a is formed to project. That is, a part of the side wall of the casing main body 72 is cut out, the bottom surface is laterally extended from the notched portion 173, and the boss portion 176 is projectingly formed on the laterally extending portion 172 on the casing side. . And the compression coil spring 177 also around the boss 176.
And the lid body laterally extending portion 174 and the boss portion 176 are screwed together by the second vertical screw 178 for adjusting the zero point, and one side edge portion of the lid body 74 is also vertically moved with respect to the casing body 72. It is elastically supported in the direction. And the vertical adjustment screw 17
You can also adjust the zero point of the electronic level by adjusting the screwing amount of 8. In other words, the second vertical screw 178 and the compression coil spring 177 constitute a second zero-point adjusting mechanism. Even if either the first vertical screw 78 or the second vertical screw 178 is used, the zero point of the level gauge is zero. Adjustment is possible.

Further, a pair of vertical protrusions 92, 92 extending downward is formed on a side edge portion of the lid body on the side opposite to the side where the laterally extending portion 174 is formed. On the other hand, on the outside of the side wall of the casing 71, the vertical projection 92
A slide guide 94 that engages in the vertical direction is formed to project. And this vertical projection 92,92 and slide guide 94
Serves as a swing guide for the lid 74 when the zero point is adjusted by the second vertical screw 178. That is, since the second vertical screw 178 is provided on the side of the lid body, a twisting moment acts on the lid body 74 by the turning operation of the second vertical screw 178 to twist the lid body 74. There is a risk of rocking to the open state. Therefore, the second vertical screw 178, which is the point of action of force.
A swing guide mechanism composed of vertical protrusions 92, 92 on the lid side and a slide guide 94 on the casing side is provided at a position facing to, so that the lid 74 can swing without being twisted.

A rectangular window 79 is formed in the center of the lid 74, and a sandwiching piece 81 is formed so as to project from the periphery of the window 79 on the back side of the lid.
As shown in the figure, the bubble tube 80 is sandwiched by the sandwiching pieces 81. Then, the window 79 is exposed on the scale 84 forming surface side of the bubble tube 80. Reference numeral 83 indicates a bubble, and reference numeral 84a indicates a scale zero point position.

Then, the bubble tube 80 is a lid body in the casing body 72.
It is supported in a suspended state by a sandwiching piece 81 of 74. That is, the heat insulating air layer S ₁ is formed between the casing main body 72 and the bubble tube 80, so that heat on the casing side is less likely to be transmitted to the bubble tube 80. Further, the rear end of the lid 74 is carried by the side wall upper end surface 72a ₂ (see FIG. 7) which is one step higher than the left and right side walls of the casing, and the front end of the lid 74 is elastically supported by the compression coil spring 77 and the vertical screw 78. Because
A gap is formed between the casing body 72 and the lid 74.
Therefore, the inside of the casing 71 is opened to the outside of the casing through a gap with the lid 74, and further through the opening 72b of the casing main body rear end side wall 72a and the notch 173 of the side wall. Thus free inflow and outflow of air out of the casing in the heat insulating air layer S ₁ is caused, no problem that adversely affects the bubble tube 80 heat is muffled in the heat insulating air layer S _1.

Also, as shown in FIG. 6, the level of the lamp body 2
A viewing window 100 for reading the scale of the electronic level 70 is formed in a region corresponding to 70. Peep window 100 is a level
The caliber is smaller than the total length of 70, and the lamp body 2
With a structure in which a transparent cap 104 is inserted into the opening 102 formed in, the cap 104 is removed, and a tool for operating a vertical screw operation tool (driver) is inserted from the opening 102,
The vertical screw 78 or 178 can be rotated.

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

First, the bubble tube 80 is inserted from the tip end side of the sandwiching piece 81, so that the lid body 74 holds the bubble tube 80. And casing
The rear end of the lid 74 is lance-engaged with the side wall 72a at the rear end of 71, and the front end and the side edge of the lid are screwed to the bosses 76, 176 by the vertical screws 78, 178, respectively, and integrated as the level 70. To do. 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 with a mounting screw 73a. After the level 70 is attached to the upper wall of the reflector, the bubbles 83 of the level 70 are straight when the vertical tilt of the reflector 4 is in the proper position, that is, when the irradiation axis 1 is in the proper vertical position. Scale zero position 84a of scale 84
Adjust using vertical screws 78 and 178 so that The adjustment with the vertical screw 78 is primary, the adjustment with the vertical screw 178 is secondary, and the vertical screw 178 is the vertical screw 7.
Loosen enough not to interfere with adjustment by 8. Then, the reflector whose irradiation axis is adjusted in this way is assembled to the lamp body to be integrated with the headlamp.

Next, a procedure for adjusting the inclination measuring devices 50, 70 performed when the headlamp is assembled to the vehicle body and a procedure for adjusting the irradiation angle of the headlamp performed 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 reference line 54a position on the slide case 56 side, the light distribution characteristic in the left-right direction of the headlamp becomes an appropriate position, and the second Bubbles 83 of level 70, which is a tilt measuring instrument
Is set so that the vertical light distribution characteristic of the headlamp becomes an appropriate position when the linear scale 84 reaches the zero point position 84a.

When the headlamp incorporating the first and second inclination measuring devices 50 and 70 is mounted on the vehicle body, the scale display of each inclination measuring device does not come to the proper position due to various errors. Therefore, it is necessary to adjust the scales of the first and second inclinometers to appropriate states.

Next, an example of this scale adjustment method will be described.

In the first inclination measuring device 50, the automobile is positioned at a horizontal position, the light distribution screen is set at a predetermined position in front of the automobile, and the headlamp is turned on. Then, the aiming screw 20 is rotated to adjust the light distribution of the headlamp to a predetermined position in the left-right direction on the light distribution screen (so that the irradiation axis 1 of the headlamp coincides with the axle). However, at this time, the reference line position 54a and the scale zero point position do not match due to variations in the lamp mounting surface on the vehicle body side and the like. Thereupon, the zero point adjusting screw 58 is rotated to move the slide case 56 axially forward and backward so that the zero point position of the scale of the first inclination measuring device 50 coincides with the reference line position 54a. In this way, the scale of the reference line position 54a of the first tilt measuring device 50 is adjusted so as to display the zero point when the right and left irradiation angle of the headlamp is at the proper position.

On the other hand, in the level 70 which is the second inclination measuring device, the aiming screw 30 is rotated to adjust so that the hot zone of the headlamp is at a predetermined vertical position on the light distribution screen. However, the bubble position may not coincide with the zero point position 84a of the scale 84 due to variations in the lamp mounting surface on the vehicle body side. In such a case, the first vertical screw 78 is rotated using a tool inserted through the opening 102 of the lamp body, and the bubble 83 is adjusted so as to come to the zero point position 84a of the scale. When it is difficult to rotate the first vertical screw 78, the second vertical screw 178 is rotated to adjust the bubble position. In this way, when the vertical illumination angle of the headlamp is at the proper 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, the opening 102 formed in the lamp body and the first vertical screw 78
Because of the positional relationship, it is difficult to rotate the first vertical screw 78 from the opening 102. Therefore, the second vertical screw 178 is rotated to swing the lid 74 to adjust the zero point.

After that, the user adjusts the irradiation angle of the headlamp. And from the upper rear part of the lamp, measuring instruments 50, 70
Except that the reference line position 54a of the first inclination measuring device 50 does not indicate the zero point position of the scale, or the bubble 83 of the level instrument 70 that is the second inclination measuring device is displaced from the zero position 84a of the scale. In this case, the amount of inclination of the reflector 4 in the left-right direction or the up-down direction, that is, the deviation of the irradiation angle of the headlamp in the left-right direction or the up-down direction can be read from these displacement amounts. In such a case, the aiming screw 20 or 30 is rotated, so that in the first inclination measuring device 50, the scale zero point position comes to the reference line position 54a, and the second inclination measuring device is used. In level 70, bubble 83
Are adjusted so that they come to the scale zero point position 84a. In this way, the irradiation angle of the headlamp can be adjusted.

FIG. 10 and FIG. 11 show an essential part of a second embodiment of the present invention. FIG. 10 is an exploded perspective view of a level, which is a measuring device for measuring the vertical inclination of the irradiation angle of a headlamp. FIG. 11 and FIG. 11 are horizontal sectional views of the swing guide structure of the lid.

In these drawings, reference numeral 70A is a level having a swing guide structure different from that of the level 70 of the first embodiment. Reference numerals 96 and 96 denote a pair of vertical protrusions formed by sandwiching the window 79 at positions corresponding to the positions where the second vertical screws 178 are arranged on the peripheral edge of the window of the lid 74. Engages with the inside of the side wall of the casing body 72, and swings the lid 74 with respect to the swing fulcrum (concave lance engagement portion with the casing side wall at the rear end of the lid) by the rotation of the second vertical screw 178. If you want to make the lid 74
Can be swung without twisting. Code 97
Is a vertical rib (see FIG. 11) formed in the side edge portion of the vertical projection 96 and having an arcuate horizontal cross section.

In addition, the tip of the bracket portion 73 is a bifurcated screw insertion portion 73.
d is formed, and the rubber packing 73c is
Is installed.

The peep window 100 formed on the lamp body 2 is
Similar to the first embodiment, the size is smaller than the entire length of the level 70A. Therefore, it is troublesome to rotate the first vertical screw 78 from the opening 102 with a tool for rotating the vertical screw, but the first vertical screw 178 is easily rotated. By rotating the first vertical screw 178, the zero point of the spirit level 70A is adjusted.

Others are the same as those in the first embodiment described above, and the same reference numerals are given to them, and the description thereof will be omitted.

〔The invention's effect〕

As is clear from the above description, in the automobile headlamp according to the present invention, the vertical tilt of the reflector with respect to the lamp body appears in the level, and the vertical tilt amount of the reflector from the level, that is, the head. It is possible to read the vertical tilt amount of the irradiation angle of the lamp.

In order to adjust the vertical illumination angle of the headlamp, the reflector can be tilted in the vertical direction so that the bubble of the spirit level is in a predetermined position, and aiming adjustment is performed. Irradiation adjustment in the direction can be performed.

Further, since the zero point adjustment can be performed by using either the first vertical screw or the second vertical screw, it suffices to rotate the easier-to-operate vertical screw from the opening of the lamp body,
The zero adjustment work is so easy. Also, if the zero point is adjusted using the second vertical screw, the opening formed in the lamp body may be smaller than the entire level of the level, and the degree of freedom in the position where the opening is formed and the level installed is that much. Has the advantage of being high.

[Brief description of drawings]

FIG. 1 is an embodiment in which the present invention is applied to a movable reflector headlamp, and is a front view of the same headlamp, FIG. 2 is a plan view of the same headlamp, and FIG. 3 is a line III-I shown in FIG.
II is a cross-sectional view, FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. 1, and FIG. 5 is a vertical cross-sectional view of the first inclination measuring device.
A sectional view taken along the line V-V shown in the figure, and FIG. 6 is a longitudinal sectional view around the mounting portion of the level instrument which is the second inclination measuring device, and a sectional view taken along the line VI-VI shown in FIG. , FIG. 7 is an exploded perspective view of a spirit level which is a second inclination measuring device, FIG. 8 is an enlarged vertical sectional view of the spirit level, and FIG. 9 is a cross sectional view of the spirit level (shown in FIG. 8). line
IX-IX)), FIG. 10 is an exploded perspective view of a spirit level which is a main part of a second embodiment of the present invention, and FIG. 11 is a horizontal sectional view of a spirit level in the same embodiment. The figure is a vertical cross-sectional view of a level-arranging portion in a conventional headlamp. 2 ... Lamp body that is a reference member, 4 ... Reflector that is a tilting member, 4B ... rear extension of the reflector,
4C: Boss which is a carrying part of the level, 6 ... Front lens, 10 ... Ball joint as a swinging fulcrum of the reflector which is a tilting member, 20 ... Tilt adjustment of the reflector which is a tilting member in the left and right direction. Aiming screw to do, 30…
... Aiming screw for adjusting tilt of the reflector, which is a tilting member, in the vertical direction, 50 ... First tilt measuring device for measuring the tilt of the irradiation angle of the headlamp in the horizontal direction,
70,70A …… Leveling device which is the second tilt measuring device for measuring the tilt of the vertical direction of the headlamp, 72 …… Leveling casing body, 74 …… Bubbling tube holder lid, 72
b ... Opening on the casing side forming a part of the concave-convex lance engaging part, 75a ... Hook on the lid side forming a part of the concave-convex lance engaging part, 75c ... Part of the concave-convex lance engaging part The locking part on the lid side constituting 77, the compression coil spring which is the first spring member, 78 the first vertical screw for adjusting the zero point, 80 the linear bubble tube, 83 the bubble, 100 ... peep window, 102 ... opening, 104 ... transparent cap, 177 ... compression coil spring which is the second spring member, 178 ... second vertical screw for zero adjustment, Lx ... horizontal axis , Ly …… vertical axis, l …… headlamp irradiation axis.

Claims (1)

[Claims] 1. A reflector-movable vehicle headlamp for a vehicle, wherein a reflector having a bulb inserted therein is tilted in a vertical direction and a horizontal direction in a lamp body to adjust an irradiation angle of the headlamp. At a predetermined position on the upper wall of the casing, a rectangular container-shaped casing that opens upward, and a linear bubble tube suspended and supported by a bubble tube holder assembled in the upper opening of the casing and housed in the casing are provided. And a bubble tube level for measuring the vertical tilt of the irradiation angle of the headlamp is attached, and one end portion of the bubble tube holder in the extending direction of the bubble tube has an uneven lance engagement with a casing. Is supported in the up-down direction by the section, while the other end of the bubble tube holder in the direction in which the bubble tube extends is
It is vertically slidably attached to a first vertical screw for adjusting the zero point that vertically penetrates the bubble tube holder and is screwed into the casing, and the first vertical screw is installed by a compression spring interposed between the first vertical screw and the casing. The head of the screw is spring-biased and elastically supported, and by the rotation of the first vertical screw, the bubble tube holder swings with the concave-convex lance engaging portion as the swing fulcrum.
A zero point adjusting mechanism is further provided, and a second vertical screw which vertically penetrates the bubble tube holder and is screwed into the casing is also provided between the first vertical screw disposition point of the bubble tube holder and the swing fulcrum. A second screw that is interposed between the vial holder and the casing to elastically support the vial holder.
A second zero-point adjusting mechanism, which is a compression spring, is provided in the lamp body wall corresponding to the level, and an opening into which a vertical screw turning operation tool can be inserted at the time of zero-point adjustment is formed. A headlamp for an automobile, characterized in that a detachable transparent cap constituting a peep window for reading a scale is attached to the portion.