JPH0654111U - Optical axis adjustment confirmation device for automobile headlights - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to be able to check directly and easily at a glance whether the vertical movement angle of the optical axis of the headlight is within the allowable range. [Structure] A mark (projections 622, 623,
Small triangular mark 624, small circle mark 625, etc.) are provided. As a result, at the time of adjusting the optical axis, it is only necessary to read the relative position between the bubble 31 of the level 36 and the marks (protrusions 622 and 623, the small triangle mark 624, the small circle mark 625, etc.) indicating the allowable range. Whether or not the vertical movement angle of the shaft is within the allowable range can be directly and easily confirmed at a glance.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical axis adjustment confirmation device for confirming the vertical optical axis adjustment of a vehicle headlamp, and particularly, in the actual light distribution, the vertical movement angle of the optical axis of the headlamp is within an allowable range. The present invention relates to an optical axis adjustment confirmation device, which can directly and easily confirm whether or not it is.

[0002]

[Prior art]

 Headlights for automobiles are dangerous because if the light emitted from them is too high, they will dazzle oncoming vehicles. On the contrary, if the irradiation light is too downward, the road ahead in the traveling direction will not be illuminated well and it will be difficult to drive. Therefore, in a vehicle headlight, it is necessary to provide a device for adjusting the optical axis of the vehicle headlamp slightly upward or downward while being mounted on the vehicle body.

An example of this type of vehicle headlamp is disclosed in Japanese Patent Laid-Open No. 3-276502. This automotive headlamp has a body to be adjusted mounted rotatably by a pivot bearing mechanism, and the body to be adjusted is equipped with a light source bulb. Equipped with an optical axis adjustment mechanism. The optical axis adjusting mechanism for the vertical direction is operated to rotate the object to be adjusted in the vertical direction with respect to the mounting body to adjust the optical axis in the vertical direction. In addition to the vertical optical axis adjustment mechanism, the above-mentioned automotive headlamp is also equipped with a horizontal optical axis adjustment mechanism.The horizontal optical axis adjustment mechanism is operated. Then, the body to be adjusted can be rotated in the left-right direction with respect to the mounting body to adjust the optical axis in the left-right direction. Further, among the above-mentioned automobile headlights, there are a reflector movable type and a lamp unit movable type. In the movable reflector type, the reflector as the body to be adjusted is rotatably attached to the lamp housing as the mounting body. In the movable lamp unit type, a lamp unit as an object to be adjusted is rotatably attached to a vehicle body as an attachment body.

Although the above-mentioned optical axis direction requires strict adjustment, it cannot be easily adjusted unless specialized equipment and specialized engineers are involved. Therefore, before being shipped from the automobile manufacturing plant, or when the equipment is installed in a specialized maintenance plant, a specialist engineer adjusts the optical axis direction using a dedicated adjustment facility. However, if the optical axis adjustment goes wrong for some reason in a car that has already been adjusted in the optical axis direction, readjustment is necessary. The readjustment in this case does not start from the state where there is no standard at all, but since accurate adjustment has already been made once, if a method to reproduce the adjusted state is taken, it will be necessary for specialized equipment and engineers. It can be carried out without even knowing. Based on this concept, various optical axis adjustment confirmation devices (more specifically, devices that confirm whether or not the optical axis adjustment has been reproduced) have been devised and put into practical use.

An example of this type of optical axis adjustment confirmation device is described in Japanese Patent Laid-Open No. 3-276502. This optical axis adjustment confirmation device consists of a horizontal extension part provided on the body to be adjusted, a casing attached to the horizontal extension part indirectly through a leaf spring or directly with a screw, and a bubble tube. And a lid that supports the bubble tube on the back side and has one end engaged with one end of the casing, and a spring with the other end of the lid attached to the other end of the casing so as to be vertically tiltable. And an adjusting screw. Thus, after finishing the optical axis adjustment by specialized equipment and engineers, operate the adjustment screw so that the bubbles in the bubble tube are located on the reference line (scale zero point), and perform the initial setting of the optical axis adjustment confirmation device. Keep going. Then, if it is considered that the optical axis may be misaligned due to bodywork or cargo, the position of the bubbles in the bubble tube can be visually confirmed with the vehicle stopped on a horizontal floor. To do. At this time, if the bubbles do not match the reference line, it means that the optical axis in the vertical direction is out of order, so operate the optical axis adjustment mechanism for the vertical direction to move the bubbles in the bubble tube. The body to be adjusted may be tilted in the vertical direction while visually observing so that the bubbles match the reference line. By this operation, the vertical direction of the optical axis will be restored to the original state that was adjusted accurately.

A headlamp that performs such an optical axis adjustment is used because the vehicle conditions such as tire pressure, flexure of the suspension, and the number of passengers are constantly changing. Due to variations, there is a certain degree of tolerance in the light distribution of the headlights that are actually installed in automobiles. That is, in the actual light distribution of the above-mentioned headlight, the vertical movement angle of the optical axis of the headlight has a certain allowable range. Therefore, at the time of optical axis adjustment after the initial setting of the optical axis adjustment confirmation device described above, the above-mentioned optical axis adjustment confirmation device is used to observe the amount of movement of bubbles in the bubble tube, and It is sufficient to judge whether the movement angle of is within the allowable range.

[0007]

[Problems to be solved by the device]

 However, the above-mentioned conventional optical axis adjustment confirmation device reads the scale directly attached to the bubble tube of the level and the movement amount of the bubble in the bubble tube, that is, counts the scale, It was determined whether or not the vertical movement angle of the optical axis of was within the allowable range. For this reason, it takes time to judge the allowable range, and there is a possibility of making a mistake.

An object of the present invention is an optical axis capable of directly and easily confirming at a glance whether or not the vertical movement angle of the optical axis of the headlight in an actual light distribution is within an allowable range. It is to provide an adjustment confirmation device.

[0009]

[Means for Solving the Problems]

 The present invention is characterized in that the level is provided with a mark indicating an allowable range in the vertical movement angle of the optical axis of the headlight.

[0010]

[Action]

 According to the present invention, with the above-described configuration, the vertical movement angle of the optical axis of the headlight in the actual light distribution can be measured by simply reading the relative position between the bubble of the level and the mark indicating the allowable range when adjusting the optical axis. You can directly and easily check whether or not is within the allowable range.

[0011]

【Example】

 Hereinafter, three examples of the optical axis adjustment confirmation device according to the present invention will be described with reference to the accompanying drawings. 1 to 23 show a first embodiment of an optical axis adjustment confirmation device of the present invention. In the figure, A is an automotive headlamp of a movable reflector type equipped with the optical axis adjustment confirmation device of the present invention. This automotive headlamp A has the following structure. That is, as shown in FIGS. 1 to 4, the front lens 100 is arranged in the front opening of the lamp housing 1 as a mounting body, and the lamp chamber 101 is formed by the front lens 100 and the lamp housing 1. . A movable reflector 2 as an object to be adjusted is arranged in the lamp chamber 101, and the movable reflector 2 is rotatably attached to the lamp housing 1 by a pivot bearing mechanism 102. On the front surface side of the movable reflector 2, a reflecting surface for reflecting the light from the light source bulb 103 described later to the front lens 100 side is provided. A light source bulb 103 is provided on the reflecting surface side of the movable reflector 2, and the light source bulb 103 is arranged in the lamp chamber 101. The lamp housing 1 and the movable reflector 2 are equipped with a vertical optical axis adjusting mechanism 104 and a horizontal optical axis adjusting mechanism 105. By operating the vertical optical axis adjusting mechanism 104 or the horizontal optical axis adjusting mechanism 105, the movable reflector 2 (including the light source bulb 103) is vertically adjusted with respect to the lamp housing 1. In other words, the optical axis is adjusted by rotating it in the left-right direction. The above-mentioned vertical optical axis adjusting mechanism 104, the horizontal optical axis adjusting mechanism 105, the pivot bearing mechanism 102, etc. are, for example, described in the above-mentioned JP-A-3-276502. Therefore, detailed description and illustration of the structure will be omitted. Further, in FIGS. 2 and 3, 106 is a horizontal optical axis adjustment confirmation device, and 107 is a vertical optical axis adjustment confirmation device of the present invention.

Then, as shown in FIGS. 4 to 6, an opening 10 is provided in the rear portion of the lamp housing 1 where the optical axis adjustment confirmation device of the present invention is mounted. A step is provided on the periphery of the opening 10 of the lamp housing 1. On the other hand, on the back surface of the movable reflector 2, a mounting boss portion 20 is integrally projected at a position where the optical axis adjustment confirmation device of the present invention is installed, and two positioning boss portions 20 are provided on both sides of the mounting boss portion 20 for positioning. The convex portions 21 of are respectively projected integrally. The positioning protrusion 21 is slightly longer than the mounting boss 20.

In the figure, 5 is an attachment member for attaching a level 36 described later to the movable reflector 2. As shown in FIGS. 7 to 9, the mounting member 5 is formed by fixing a second mounting plate 52 also made of, for example, a thin steel plate to a first mounting plate 51 made of, for example, a thin steel plate by welding or the like. The first mounting plate 51 includes a narrow portion on one end side and a wide portion on the other end side from substantially the middle. The wide portion of the first mounting plate 51 is bent at a right angle to form a horizontal portion 510 and a vertical portion 511, and both sides from one end of the horizontal portion 510 of the first mounting plate 51 to the middle of the vertical portion 511. Fold the edges at a right angle. A screw hole 512 is provided substantially in the center of the horizontal portion 510. A through hole 513 for penetrating the mounting screw 50 is provided in the center of the vertical portion 511, and two positioning holes 514 for penetrating the positioning protrusions 21 are provided on both sides of the penetrating hole 513. Provide each. The second mounting plate 52 is formed by bending both sides of the horizontal bottom portion at a right angle. The second mounting plate 52 is cut and raised from the center to the one end of the horizontal bottom to form a tongue-shaped spring portion 520 of a leaf spring as an elastic member. The tip of the spring portion 520 is bent horizontally to provide a horizontal contact portion that comes into contact with the bottom of the case 6 described later. Although the spring portion 520, that is, the elastic member, is integrally provided on the mounting member 5, it may be integrally provided on the case 6 side of the electronic level 36, which will be described later, or both the mounting member 5 and the case 6. It may be provided integrally with. At the other end of the horizontal bottom portion of the second mounting plate 52, a through hole 521 for penetrating a screw 53 for holding initial setting described later is provided so as to communicate with the screw hole 512 of the first mounting plate 51. A pair of conical concave recesses 522 are integrally provided at one end of both vertical sides of the second mounting plate 52. The engagement recess 522 may have a recess shape other than the conical recess shape described above, or may be a separate body from the second mounting plate 52 and fixed by adhesion or the like. As shown in FIG. 6, the two through holes 514 for positioning the mounting member 5 are externally fitted to the two convex portions 21 for positioning the movable reflector 2, and the movable reflector 2 of the mounting member 5 is fitted. Determine the mounting position to. Next, the attachment member 5 is attached to the movable reflector 2 with the attachment screw 50. The positioning mechanisms 21 and 514 maintain the levelness of the mounting member 5 attached to the movable reflector 2 in the lateral direction (direction of arrow a in FIG. 6).

In the figure, numeral 53 is a screw as an initial setting holding tool of the spirit level. The screw 53 rotates the level 36 described later about the support fulcrum of the supporting members 522 and 602 to perform the initial setting of the level 36, and the posture of the level 36 after the initial setting. Is held against the elastic force of the spring 520.

The above-mentioned supporting members 522 and 602, the spring portion 520, and the screw 53 constitute an initial setting mechanism for performing the initial setting of the electronic level 36 to be described later. Moreover, in the initial setting mechanism, since the spring portion 520 is integrally provided on the mounting member 5, the number of parts can be relatively small.

In the figure, reference numeral 36 is a spirit level in which the bubble tube 3 is housed and held in the case 6. As shown in FIGS. 5 and 6, the bubble tube 3 forms a bubble 31 by enclosing a liquid such as anhydrous alcohol in a transparent tube 30 made of BC (semi-hard glass) or the like. A scale 32 is provided on the upper surface of the transparent tube 30 of the bubble tube 3 at right angles to the axial direction (longitudinal direction). A convex portion 33 having a substantially conical shape for enclosing a liquid is integrally provided at the center of one end surface of the transparent tube 30 of the bubble tube 3, and a flat reference surface 34 is formed on the other end surface of the transparent tube 30. . Further, the transparent tube 30 of the bubble tube 3 is formed in a curved shape in which the central portion is slightly raised and both ends are slightly lowered when viewed from the side. The case 6 is made of synthetic resin such as PP (polypropylene). Further, as shown in FIGS. 7, 13 and 17, the case 6 is integrally provided with one end of the main body portion 60 and one end of the lid portion 62 via the integral connecting portion 61 so as to be openable and closable.

The main body portion 60 is provided with an accommodating recess 630 for accommodating the bubble tube 3 therein, and has a hollow rectangular parallelepiped shape with an upper surface opened. The opening 63 on the upper surface is provided as an inlet for accommodating the bubble tube 3 in the accommodating recess 630 and as a see-through portion for seeing through the bubble tube 3 in the accommodating recess 630. Is. A through hole 600 for passing the screw 53 is provided at the other end of the main body portion 60, and a pair of locking grooves 601 is provided on the left and right side walls at the other end of the main body portion 60. An opening 604 is provided at one end of the main body 60, and a substantially conical shape for supporting the pair of engaging recesses 522 of the mounting member 5 on the outer surfaces of both ends of the main body 60 so as to be vertically rotatable. A pair of shaped engaging protrusions 602 are integrally provided. The engaging convex portion 602 may have a convex shape other than the conical shape described above, or may be a separate body from the main body portion 60 and fixed by adhesion or the like. On the other hand, the lid portion 62 has a rectangular plate shape. A through hole 620 for seeing through the bubble tube is provided in the center of almost the entire lid portion 62. A pair of locking lances 621 that lock with the pair of locking grooves 601 are provided on the left and right sides of the other end of the lid 62. The integral connecting part 61 has a thin hinge structure. The main body part 60 for accommodating and holding the bubble tube 3 and the lid part 62 provided with the through hole 620 for seeing through the bubble tube and the pair of central reference projections 622 can be opened and closed by the integral connecting part 61 of the hinge structure. Since it is integrally connected to the case 6, the number of parts as the case 6 can be reduced.

In the figure, reference numeral 622 is a protrusion as a mark showing an allowable range in the vertical movement angle of the optical axis of the headlight. The protrusion 622 is in the shape of a small triangle, and is located at a position corresponding to the allowable range in the vertical movement angle of the optical axis of the headlight, on the opposite left and right edges of the through hole 620 of the lid 62. Two pairs, one indicating the allowable range on the upward side and the other indicating the allowable range on the downward side, are provided so as to project integrally. This projection 622 is obtained by previously obtaining the relative relationship between the vertical movement angle of the optical axis of the headlight within the allowable range and the movement distance of the bubble 31 of the bubble tube 3 of the level 36, and then the case 6 are provided at predetermined positions. In addition, "U" indicating the upward side, "D" indicating the downward side, and "0" indicating the 0 position are attached to the edge of the through hole 620 on the surface of the lid portion 62, respectively.

In the figure, reference numeral 64 denotes a rib-shaped or plate-shaped elastic holding portion provided at one end of the main body portion 60 of the case 6. The elastic holding portion 64 is integrally formed so as to project from the upper edge of the opening portion 604 at one end of the case 6, and has a wall thickness thinner than that of the case 6 to have elasticity. The elastic holding portion 64 is provided with a notch 640 from the lower end to the root of the case 6. The width of the notch 640 is made slightly smaller than the outer diameter of the convex portion 33 of the bubble tube 3 where the elastic holding portion 64 is located when the bubble tube 3 is housed in the case 6. Since the elastic holding portion 64 can absorb the strain caused by the difference in the coefficient of thermal expansion between the case 6 and the bubble tube 3, the bubble tube 3 strongly hits the case 6 and the bubble tube is cracked or the liquid leaks. It is possible to prevent problems such as the above, and it is possible to firmly hold the bubble tube 3 in the case 6. Further, in the figure, reference numeral 65 is a flat reference surface provided on the other end surface of the accommodation recess 630 of the main body 60.

In the figure, reference numeral 66 designates both side walls in the longitudinal direction of the accommodation recess 630 of the main body 60. The inner width of the side walls 66 is made substantially equal to or slightly smaller than the outer diameter of the transparent tube 30 of the bubble tube 3. The both side walls 66 sandwich and hold both sides of the bubble tube 3. In the figure, 67 is the bottom of the accommodation recess 630 facing the opening 63 of the body 60. The upper surface of the bottom portion 67 is aligned with the lower surface of the bubble tube 3 so that the central portion is curved slightly upward and both ends thereof are curved slightly downward. Further, in the figure, reference numeral 68 denotes an edge of the opening portion 63 of the main body portion 60, which is at least a pair of convex portions integrally projecting from the inner surfaces of the both side walls 66 at substantially the center. In this example, it is a lance-shaped claw. The claw portion 68 is for preventing the bubble tube 3 in the accommodation recess 630 from coming out of the opening 63. That is, the claw portion 68 presses the bubble tube 3 against the bottom portion 67 and holds the bubble tube 3 together with the bottom portion 67. The directions in which the claw portion 68 and the bottom portion 67 hold the bubble tube 3 are the elastic holding direction of the elastic holding portion 64 and the reference surface 65 (direction of arrow c in the figure) and the holding direction of the both side walls 66 (see FIG. The direction of arrow d) and the direction orthogonal to the direction of arrow d). In the figure, 7 are two pairs of notches provided on both sides of the pair of claws 68. The notches 7 are provided on the both side walls 66, on both sides of the claw portion 68, from the opening 63 to a substantially middle portion of the both side walls 66. The notch 7 allows the claw portion 68 to flexibly open and close when the bubble tube 3 is housed in the case 6 as described later. In the figure, 69 are two pairs of connecting portions provided in the two pairs of notches 7, respectively. As shown in FIG. 20, which will be described later, the connecting portion 69 is for preventing the edge of the opening portion of the case 6 from warping upward when the level 36 is initialized by rotation. Moreover, when the bubble tube 3 is housed in the case 6, it also allows the claw portion 68 to flexibly open and close. The connecting portion 69 connects both sides of the claw portion 68 separated by the notch 7 and the both side walls 66. The connecting portion 69 has a thin shape provided in the cutout 7. It should be noted that the thin-walled connecting portion 69 is provided inside the side wall 66 as shown in FIG. 8 or outside the side wall 66 as shown in FIG. It is provided in the middle of the notch 7 in the thickness direction. Since the pair of thin connecting portions 69 provided in the notches 7 on both sides of the claw portion 68 can allow the claw portion 68 to move and prevent the case 4 from being deformed, the bubble tube 3 can be prevented from being deformed. It can be held more firmly in 6.

Thus, the bubble tube 3 is pushed into the main body 60 from the opening 63 of the case 6, the lower surface of the bubble tube 3 is aligned with the upper surface of the bottom portion 67 of the case 6, and the bubble tube is 3 is housed in the case 5, and the elastic holding portion 64 is sandwiched between the convex portions 33 of the bubble tube 3. Then, since the width of the notch 640 of the elastic holding portion 64 is slightly smaller than the outer diameter of the convex portion 33 of the bubble tube 3 where the elastic holding portion 64 is located when the bubble tube 3 is housed in the case 6. As shown in FIGS. 7 and 12, the elastic holding portion 64 escapes and bends in the direction of the conical tip of the convex portion 33 of the bubble tube 3 (the direction opposite to the arrow b direction). As a result, the bubble tube 3 is pressed in the direction of the arrow b by the elastic return force of the elastic holding portion 64 in the direction of the arrow b, and the reference surface 34 of the bubble tube 3 becomes the reference surface 65 of the case 6. Both ends of the bubble tube 3 are pressed and sandwiched by the elastic holding portion 64 and the reference surface 65 of the case 6, and are elastically held in the axial direction of the bubble tube 3, that is, the direction of arrow c. Further, as shown in FIGS. 7 and 15, both sides of the bubble tube 3 are sandwiched by both side walls 66 of the case 6 in a direction orthogonal to the axial direction of the bubble tube 3, that is, an arrow d direction. Retained. Further, as shown in FIG. 14, the bubble tube 3 has a pair of claw portions 68 and a bottom portion 67, an elastic holding direction c of the elastic holding portion 64 and the reference surface 65, and a holding direction d of the both side walls 66. Are sandwiched and held in the directions orthogonal to each other, that is, in the direction e. As a result, the curved lower surface of the bubble tube 3 is pressed against the curved bottom surface of the case 6.

Therefore, the bubble tube 3 is displaced in the housing recess 630 of the case 6 in the axial direction of the bubble tube 3, in the direction orthogonal to the axis of the bubble tube 3, and in the axial direction of the bubble tube 3. It will be retained so as to prevent rotation around. As a result, the bubble tube 3 can be firmly held in the case 6. Particularly, in this invention, since two pairs of notches 7 are provided on both sides of a pair of claws 68, when the bubble tube 3 is housed in the case 6, as shown in FIG. Only the pair of claws 68 flexibly open outward slightly, but both side walls 66 do not open outward, but firmly hold both sides of the bubble tube 3 to prevent the bubble tube 3 from rotating around its axis. Can be prevented.

When the bubble tube 3 is housed and held in the case 6, as shown in FIG. 12, the lid portion 62 is rotated in the direction of the arrow in the integral connecting portion 61 of the hinge structure, and the lid portion 62 is rotated. The pair of locking claws 621 of 62 are locked in the pair of locking grooves 601 of the main body 60 to cover the opening 63 of the main body 60 with the lid 62. At this time, since the through hole 620 for see-through is provided in the lid portion 62, there is no influence on the visual observation of the bubble tube 3. In this way, the level 36 is constructed.

Thus, the pair of engaging protrusions 602 of the level 36 are engaged with the pair of engaging recesses 522 of the mounting member 5, so that the level 36 is attached to the mounting member 5 and the engaging recesses 522 and It is supported rotatably in the vertical direction around the support fulcrum of the support member composed of the engaging projections 602. Next, the screw 53 is screwed into the screw hole 512 of the mounting member 5 through the through hole 600 of the level 36. As a result, the level 36 is attached to the mounting member 5 so as to be capable of initial setting, and the posture of the level 36 after the initial setting is retained against the elastic force of the spring 520. Becomes Further, the level 36 is positioned so as to project from the opening 10 of the lamp housing 1 to the outside of the lamp chamber 101 of the vehicle headlamp A through the mounting member 5.

In the figure, 8 is a heat insulating member. As shown in FIGS. 2 to 6, the heat insulating member 8 is made of a member having a flexible rubber elasticity, and has an annular portion 80 fitted to the peripheral edge of the opening 10 of the lamp housing 1, and the annular portion 80. The sheet portion 81 is integrally formed and covers the opening 10. The sheet portion 81 is provided with a plurality of slits 82 radially for facilitating the insertion of the level 36 and the mounting member 5, and a plurality of round holes 83 are provided at the tips of the plurality of slits 82. , The slit 82 is configured so that a crack does not occur at the tip thereof. The annular portion 80 of the heat insulating member 8 is fitted around the opening 10 of the lamp housing 1, and the seat portion 81 of the heat insulating member 8 covers the opening 10 of the lamp housing 1. The heat insulating member 8 shields the level 36 on the outside of the vehicle headlamp A from the heat convection of the air in the lamp chamber 101 of the vehicle headlamp A. As a result, the level 36 is not affected by heat as much as possible, and the optical axis adjustment can be confirmed accurately accordingly. Although the above-mentioned heat insulating member 8 is attached to the peripheral edge of the opening 10 of the lamp housing 1, it may be attached to the peripheral edge of the opening end of the transparent cap 11 described later.

In the figure, 11 is a transparent cap. As shown in FIGS. 2 to 6, the transparent cap 11 is made of PMMA (methyl methacrylate) or the like, and has a hollow cylindrical shape with one end opened. Three mounting pieces 110 are integrally provided at equal intervals on the outer surface of the transparent cap 11 on the opening end side. The mounting piece 110 has a substantially triangular shape and is provided perpendicularly to the transparent cap 11 and radially. Further, a step portion protruding outward is provided at the opening end of the transparent cap. The transparent cap 11 covers the level 36 protruding to the outside of the lamp chamber 101 of the vehicle headlamp A and the opening 10 of the lamp housing 1. Further, an O-ring is interposed between the inside of the step at the opening end of the transparent cap 11 and the outside of the step at the peripheral edge of the opening 10 of the lamp housing 1. The three attachment pieces 110 of the transparent cap 11 are attached to the peripheral edge of the opening 10 of the lamp housing 1 with the three attachment screws 111. Since the transparent cap 11 covers the level 36 protruding to the outside of the lamp chamber 101 of the vehicle headlight A, the level 36 is impacted by an external force (for example, foreign matter is hit or water enters. Can be protected from

Since the optical axis adjustment confirmation device of the present invention has the above-mentioned configuration, the transparent cap 11 is removed and the bubble 31 of the bubble tube 3 is centered when the optical axis adjustment by the specialized equipment and the technician is completed. The level of the electronic level 36 is initialized by operating the screw 53 so as to coincide with the line or "0" indicating the 0 position of the case 6. Then, when the initial setting of the level 36 is completed, the transparent cap 11 is attached to the lamp housing 1 with the attaching screw 111. After that, if it is considered that the optical axis may be misaligned due to the bodywork or cargo, the bubble tube 3 from the outside of the transparent cap 11 with the car stopped on a horizontal floor surface. The position of the bubble 31 is visually recognized. At this time, as shown in (A) of FIG. 20, if the bubble 31 is located inside from the position symmetrical to the protrusion 622 showing the allowable range of the case 6, that is, the center of the bubble 31 is away from the protrusion 622. If it is located inside, it can be easily and accurately determined at a glance that the vertical movement angle of the optical axis of the headlight is within the allowable range.

When the bubble 31 of the level 36 is located outside the protrusion 622 during the above-mentioned optical axis adjustment, the vertical movement angle of the optical axis of the headlight may be outside the allowable range. You can judge. In this case, while visually checking the movement of the bubble 31 from the outside without removing the transparent cap 11, the vertical axis optical axis adjusting mechanism 104 is operated so that the bubble 31 is positioned inside the protrusion 622. The movable reflector 2 may be tilted upward and downward. By this operation, the optical axis of the headlight can be corrected within the allowable range. As a matter of course, if the movable reflector 2 is tilted and adjusted so that the bubble 31 coincides with “0” indicating the 0 position, the vertical direction of the optical axis ZZ is returned to the original adjusted state. Can be restored.

As described above, according to the optical axis adjustment confirmation device of the present invention, the case 6 of the level 36 is provided with the projection 622 indicating the allowable range of the vertical movement angle of the optical axis of the headlight. When adjusting the optical axis, simply reading the relative position between the bubble 31 of the level 36 and the projection 622 indicating the allowable range makes the vertical movement angle of the optical axis of the headlight in the actual light distribution within the allowable range. Whether or not there is can be checked directly and easily at a glance.

FIG. 20B is a plan view of the spirit level showing a modified example of the relative positional relationship between the bubbles and the protrusions. In this case, if the outer end of the bubble 31 is located on the protrusion 623, the vertical movement angle of the optical axis of the headlamp is within the allowable range. 20 (B) and the above-mentioned FIG. 20 (A), the bubble 31 shown by the solid line shows the downward side of the optical axis, and the bubble 31 shown by the broken line shows the upward side of the optical axis. FIG. 20C is a plan view of a spirit level showing a modified example of the mark indicating the allowable range of the vertical movement angle of the optical axis of the headlight. The mark 624 is a small triangular mark formed by printing or the like on the edge of the through hole 620 of the lid 62 of the case 6. FIG. 20D is a plan view of a spirit level showing a modified example of the mark indicating the allowable range of the vertical movement angle of the optical axis of the headlight. This mark 625 is a small circle mark formed by printing or the like on the edge of the through hole 620 of the lid portion 62 of the case 6. In addition, in the above-mentioned embodiment, the mark (projections 622, 623, small triangular mark 624, small circle mark 625, etc.) indicating the allowable range in the vertical movement angle of the optical axis of the headlight is attached to the case of the level 36. 6 is provided, but this mark may be provided directly on the bubble tube 3 of the level 36.

FIG. 24 shows a second embodiment of the optical axis adjustment confirmation device according to the present invention, and is a cross-sectional view of a state where the optical unit adjustment confirmation device is mounted on an automobile headlamp B of a movable lamp unit. This movable lamp unit type automotive headlamp B is a pivot bearing mounted on a vehicle body 109 having a lamp unit (adjusted body) including a lamp housing 1, a fixed reflector 200, a light source bulb (not shown) and the like as a mounting body. The lamp unit and the vehicle body 109 are equipped with an optical axis adjusting mechanism (not shown) so that the lamp unit and the vehicle body 109 can be rotated. The mounting member 5 is mounted to the boss portion 108 of the lamp housing 1 of the headlamp B for an automobile of this movable lamp unit with the mounting screw 50, and the level 36 is attached to the mounting member 5 and the supporting members 522 and 602 and the elastic member. The level 36 is attached by a screw (not shown) and screw 53, the level 36 is positioned outside the lamp chamber 101, and the level 36 is covered with the transparent cap 11. The optical axis adjustment confirmation device of this example is similar to the above-mentioned optical axis adjustment confirmation device in that the bubble 31 of the level 36 and the mark indicating the allowable range (projections 622, 623, small triangular mark 624, Only by reading the relative position with respect to the small circle mark 625), it is possible to directly and easily confirm at a glance whether or not the vertical movement angle of the optical axis of the headlight is within the allowable range.

FIG. 25 is a sectional view showing a third embodiment of the optical axis adjustment confirmation device of the present invention. In this embodiment, the mounting member 5 is eliminated, and the optical axis adjustment confirmation device (comprising a level 36, etc.) of the present invention is initially set on the movable reflector 2 (or lamp unit B) as the object to be adjusted. It is directly attached as much as possible. That is, the mounting member 201 is integrally provided on the rear portion of the movable reflector 2 so as to project rearward, and the mounting member 201 is projected from the opening 10 of the lamp housing 1 to the outside. The mounting member 201 has the same vertical cross-sectional shape as the second mounting plate 52 of the mounting member 5 described above. The spirit level 36 is placed on the horizontal bottom of the mounting member 201 protruding to the outside, and the spirit level 36 is mounted on both vertical sides of the mounting member 201, and the support member (a pair of engaging recesses 202 and a pair of engaging recesses 202). The protrusion 602) is rotatably supported, and an elastic member (not shown) is interposed between the horizontal bottom of the mounting member 201 and the bottom of the level 36, and the screw 53 is further attached to the case of the level 36. It is screwed into the mounting member 201 via 6. Then, the level 36 protruding from the lamp chamber 101 to the outside is covered with the transparent cap 11. In addition, the heat insulating member 8 is stretched over the opening 10 of the lamp housing 1. The optical axis adjustment confirmation device of this example is similar to the above-mentioned optical axis adjustment confirmation device in that the bubble 31 of the level 36 and the mark indicating the allowable range (projections 622, 623, small triangular mark 624, Only by reading the relative position with respect to the small circle mark 625), it is possible to directly and easily confirm at a glance whether or not the vertical movement angle of the optical axis of the headlight is within the allowable range. Note that although FIG. 25 illustrates the movable headlamp of the reflector type, it is also applicable to the movable type of the lamp unit. In this case, a mounting member is integrally projected rearward from the lamp housing 1, and a spirit level is mounted on the mounting member through a supporting member, an elastic member, a screw, etc. so that the initial setting can be performed.

[0033]

[Effect of device]

 As is apparent from the above, the optical axis adjustment confirmation device of the present invention is provided with the mark indicating the allowable range in the vertical movement angle of the optical axis of the headlight on the level, so that the optical axis adjustment confirmation By simply reading the relative position between the bubble of the level and the mark indicating the allowable range, it is possible to directly and simply check at a glance whether the vertical movement angle of the optical axis of the headlight is within the allowable range. be able to.

[Brief description of drawings]

FIG. 1 is a front view of a reflector movable type automotive headlamp equipped with an optical axis adjustment confirmation device.

FIG. 2 is a rear view of the same.

FIG. 3 is an enlarged rear view of the main part of the same.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an enlarged cross-sectional view of the main part of the same.

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

FIG. 7 is a plan view of the case in which the bubble tube is housed and the lid is opened.

FIG. 8 is a partial perspective view showing a claw portion and a connecting portion of the case.

FIG. 9 is a partial perspective view showing a modified example of the claw portion and the connecting portion of the case.

FIG. 10 is a partial perspective view showing an elastic holding state of the elastic holding portion of the case and the bubble tube.

FIG. 11 is a plan view of the case in which the bubble tube is housed and the lid is closed.

12 is a sectional view taken along line XII-XII in FIG.

FIG. 13 is a cross-sectional view showing a state in which the cover of the case is opened in FIG.

14 is a sectional view taken along line XIV-XIV in FIG.

15 is a sectional view taken along line XV-XV in FIG.

FIG. 16 is a side view of the case in which the bubble tube is housed and the lid is closed.

FIG. 17 is a front view of the case in which the bubble tube is housed and the lid is closed.

FIG. 18 is a side view showing a state in which the cover of the case is opened in FIG. 16;

FIG. 19 is a rear view of the case in which the bubble tube is housed and the lid is closed.

FIG. 20 (A) is a plan view of the spirit level showing a state in which the vertical movement angle of the optical axis of the headlight is within an allowable range, and FIG. 20 (B) is a relative positional relationship between bubbles and protrusions. Is a plan view of a spirit level showing a modified example of the above, (C) is a plan view of the spirit level showing a modified example of a mark showing an allowable range of vertical movement angle of the optical axis of the headlight, (D) is Similarly, it is a plan view of a spirit level showing a modified example of the mark showing the allowable range of the vertical movement angle of the optical axis of the headlight.

FIG. 21 is a plan view of a mounting member.

22 is a sectional view taken along line XXII-XXII in FIG.

23 is a sectional view taken along line XXIII-XXIII in FIG. 21.

FIG. 24 is a vertical cross-sectional view showing a second embodiment of the optical axis adjustment confirmation device of the present invention and being mounted on a movable lamp unit type automotive headlamp.

FIG. 25 is a sectional view showing a third embodiment of the optical axis adjustment confirmation device of the present invention.

[Explanation of symbols]

A ... Reflector movable type automotive headlight, 1 ... Lamp housing (mounting body), 2 ... Movable reflector (adjusted body), 3 ... Bubble tube, 5 ... Mounting member, 6 ... Case, 8 ... Heat insulating member, Reference numeral 10 ... Opening of lamp housing, 11 ... Transparent cap, 36 ... Level, 53 ... Screw (initial setting holder), 520 ... Spring part, (elastic member), 522 ... Engagement recess (supporting member), 602 ... Engagement Joint convex part (supporting member), 60
... Case body portion, 61 ... Hinge structure integrally connecting portion, 6
2 ... Lid part, 63 ... Opening part, 64 ... Elastic holding part, 65 ... Reference plane, 66 ... Both side walls, 67 ... Bottom part, 68 ... Claw part, 69 ...
Connection part, 620 ... Through hole (transparent part), 622 and 623 ...
Protrusion (mark), 624 ... Small triangular mark (mark), 625
... small circle mark (mark), 7 ... notch, B ... lamp unit movable type automotive headlight (adjustable body with lamp unit), 109 ... vehicle body (mounting body), 201 ... mounting member, 2
02: Engagement recess (support member).

Claims (1)

[Scope of utility model registration request] 1. A mounting body, a body to be adjusted rotatably mounted on the body, a light source bulb mounted on the body to be adjusted, and the body to be adjusted vertically with respect to the body. In an automotive headlamp equipped with an optical axis adjusting mechanism that moves the optical axis in the vertical direction, a level level composed of a case and a bubble tube is attached to the body to be adjusted, and the bubble of the level level is attached. It is an optical axis adjustment confirmation device for confirming the vertical optical axis adjustment of the body to be adjusted by visually observing the movement of bubbles in the tube, wherein the level is the optical axis of the headlight in the actual light distribution. An optical axis adjustment confirmation device in a vehicle headlamp, comprising a mark indicating an allowable range of a moving angle in a direction.