JPH0716307U - Vehicle headlamp tilt measuring instrument - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an inclination measuring instrument for a headlamp for an automobile, which has a small number of parts, has a very simple structure, and is very easy to assemble. [Structure] A reflector 4 having a light-reflecting surface that sets the irradiation direction of the lamp, and supported by an aiming mechanism (aiming screw 20) so that tilting in the left-right direction can be adjusted with respect to the lamp body 2, and a reflector moving to the outer wall of the reflector 4. A linear scale 62 provided along the direction,
A transparent peep window 70 provided in the linear scale corresponding region of the lamp body 2 and a linear peek 6 provided in the peep window 70
2 is attached to the index 64a corresponding to 2 and the observation window 70,
Inclination measurement provided with a line-of-sight position setting reference point 66a for setting the line-of-sight position E ₁ in cooperation with the index 64a, and a transparent zero-point adjusting member (slide plate 66) capable of adjusting the position along the linear scale 62. The zero point can be easily adjusted by sliding the zero point adjusting member (slight plate 66) while the headlamp is in the aiming state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a measuring device for confirming whether the irradiation direction of a headlamp for a vehicle in the left-right direction, that is, the irradiation angle in the left-right direction of the lamp is in a regular position. The present invention relates to an inclination measuring device for an automobile headlamp, which can easily adjust the irradiation angle in the left-right direction of the lamp to a normal position.

[0002]

[Prior art]

 As a conventional technique of this type, there is Japanese Patent Laid-Open No. 3-238702. An example of a movable reflector headlamp in which a reflector is tiltably supported in a lamp body will be described as shown in FIGS. 8 and 9. A reflector 4 is supported on the lamp body 2 by three points, that is, two aiming screws 20 and 30 extending in the front-rear direction and one swinging fulcrum (ball joint) 10. Note that FIG. 8 is a front view of the reflector, and the aiming screws 20 and 30 respectively extend in the direction perpendicular to the paper surface. The aiming screws 20 and 30 are rotatably supported on the back wall of the lamp body 2, and the supporting point of the reflector 4 by the aiming screws 20 and 30 is, for example, relative to the swing fulcrum 10 when viewed from the front of the lamp. They are arranged orthogonally. By rotating the aiming screws 20 and 30, the reflector 4 is tilted around the vertical axis Ly and the horizontal axis Lx, respectively, and the irradiation angle of the lamp is adjusted. Reference numeral 3 is a bulb that is a light source attached to the reflector 4.

Reference numeral 40 denotes an inclination measuring device which is interposed between the rear wall of the lamp body 2 and the rear surface of the reflector 4 and which measures the inclination of the headlamp in the left-right direction. The inclination measuring device 40 has a cylindrical fixed holder 42 fixed to the rear wall of the lamp body 2 and a transparent fixing screwed to the fixed holder 42, as shown in an enlarged vertical section in FIG. A cylindrical movable holder 44, a slider 46 that is inserted into the movable holder 44, and is held by the compression coil spring 43 so that the front end portion thereof abuts the reflector 4 in a biased state. The slider 47 is composed of a scale 47 formed and an index 45 formed on the movable holder 44, and is linked to tilting of the reflector 4 about the vertical axis Ly (tilt in the left-right direction of the optical axis L). 46 moves back and forth in the movable holder 44, and the amount of tilt of the optical axis L of the headlamp in the left-right direction appears as a deviation of the scale 47 with respect to the index 45. By reading this, the horizontal direction of the optical axis L can be read. Deviation of is that it is seen.

Reference numeral 50 is a bubble tube level that is an inclination measuring device attached to the reflector 4. The tilt measuring device (level) 50 has a structure in which a straight type bubble tube is housed in a case, and is linked to the tilting of the reflector 4 about the horizontal axis Lx (the tilting of the optical axis L in the vertical direction). Since the bubbles in the tube move, the vertical tilt amount of the optical axis L of the headlamp can be read from the scale of the bubble tube. Reference numeral 5 is a transparent peep window provided at a position corresponding to the tilt measuring instruments 40 and 50 of the lamp body 2, and the scale of the tilt measuring instruments 40 and 50 can be read from this peep window 5.

[0005]

[Problems to be solved by the device]

 However, the above-described tilt measuring device 40 for measuring the left-right tilt of the headlamp has a structure in which the tilt amount of the reflector 4 is expressed as the displacement of the slider 16 with respect to the lamp body 2, and the zero point adjustment is performed. In order to perform the above, since the holder that supports the slider 16 has a double structure of the fixed holder 42 and the movable holder 44, the number of parts is large, the structure is very complicated, the cost is high, and the head lamp is assembled to the head lamp. There was a problem that the attachment was complicated.

The present invention has been made in view of the above problems, and an object thereof is to provide an inclination measuring device for a headlamp for an automobile, which has a small number of parts, has a very simple structure, and is very easy to assemble. To provide.

[0007]

[Means for Solving the Problems] In order to achieve the above object, an inclination measuring device for a vehicle headlamp according to claim 1, has a light reflecting surface for setting an irradiation direction of the lamp, and has an aiming mechanism. Therefore, the reflector is supported so as to be tiltable in the left-right direction with respect to the lamp body, the linear scale is provided on the outer wall of the reflector along the reflector moving direction, and the transparent peep is provided in the linear scale corresponding region of the lamp body. The window, the index corresponding to the linear scale provided on the peep window, and the line-of-sight position setting reference point which is attached to the peep window and sets the line-of-sight position in cooperation with the index, the straight line The structure is provided with a transparent zero-point adjustment member whose position can be adjusted along the scale.

[0008]

[Action]

 The displacement of the reflector in the left-right direction appears as the value of the scale at the index position, and thus the inclination of the reflector in the left-right direction, that is, the inclination of the irradiation angle of the headlamp in the left-right direction can be known from the value of the scale. In addition, the eye-line position when reading the scale is set by the eye-line position setting reference point of the zero adjustment member and the index of the observation window, so the eye-line position can be adjusted at the time when the left-right inclination of the reflector is adjusted by aiming adjustment. The zero point can be adjusted by adjusting the position of the zero point adjusting member so that the set reference point is located on the extension line between the scale zero point and the index.

[0009]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 5 show an embodiment in which the present invention is applied to a reflector movable headlamp. FIG. 1 is a plan view of a reflector movable headlamp in which an inclination measuring device is assembled, and FIG. 2 is the same. A vertical sectional view of the headlamp (a sectional view taken along the line II-II shown in Fig. 1), Fig. 3 is a perspective view showing the state in which the tilt measuring device is removed from the lamp body, and Fig. 4 is the headlamp in the position of the tilt measuring device. FIG. 5 is a vertical cross-sectional view (cross-sectional view taken along line IV-IV shown in FIG. 1), and FIG. 5 is a cross-sectional view for explaining the zero-point adjustment state of the tilt measuring device.

In these drawings, reference numeral 2 is a container-shaped lamp body, and a parabolic reflector 4 in which a bulb 3 as a light source is inserted is arranged in the lamp body 2, and a front surface of the lamp body 2 is arranged. The front lens 6 is assembled in the opening and integrated as a headlamp. As shown in FIGS. 1 and 2, the reflector 4 is supported in the lamp body 2 by three points of a ball joint 10, a horizontal aiming screw 20, and a vertical aiming screw 30. The ball portion 12 of the ball joint 10 is fixedly supported on the lamp body 2 side, and the ball receiving portion 14 that engages with the ball portion 12 is inserted and fixed to the bracket 7 projecting on the rear surface side of the reflector 4, and the reflector 4 is attached. Has a structure capable of swinging around the ball joint 10. The aiming screws 20 and 30 both penetrate the lamp body 2 and extend forward and backward, and are supported by the lamp body 2 at the penetrating portions. The front ends of the screws 20 and 30 are screw support nuts 22 and 23 on the reflector 4 side. It is screwed to. Jig engaging portions 23 and 33 such as a driver are formed at the ends of the aiming screws 20 and 30 that extend toward the rear of the lamp body, and by rotating the aiming screws 20 and 30, the jigs on the reflector side can be rotated. The nuts 22 and 32 advance and retreat along the screws 20 and 30, so that the inclination of the reflector 4 changes. That is, the reflector 4 can be tilted in the left / right and up / down directions by rotating the screws 20 and 30 to adjust the irradiation angle of the headlamp (headlamp optical axis L) in the left / right and up / down directions. You can On the right side of the upper wall of the reflector 4 (right side when the reflector is viewed from the front), a straight bubble tube type level 50 for measuring the vertical tilt amount of the reflector 4 is attached. A transparent peep window 5 is provided in a region of the lamp body corresponding to the level 50. The structure of the aiming mechanism and the level 50 in the reflector movable headlamp described above is a conventionally known structure.

Between the left side of the upper surface wall of the reflector 4 (left side of the reflector when viewed from the front) and the upper surface wall of the lamp body 2, an inclination measuring device 60 for measuring the amount of inclination of the reflector 4 in the left-right direction. Is provided. That is, on the upper wall of the reflector 4, there is formed a linear scale 62 extending along the moving direction of the reflector 4 when the aiming screw 20 is rotated (the direction of the white arrow in FIG. 3). Reference numeral 63 indicates the scale zero point position. On the other hand, a circular opening 2a is formed at a position corresponding to the scale 62 on the upper wall surface of the lamp body 2, and a transparent disk-shaped lens 64 is attached to the opening 2a, whereby the peephole 70 is formed. Are formed. Reference numeral 64b is a screw for fixing the lens 64 to the lamp body 2.

A concave groove 65 extending in the extending direction of the linear scale 62 is formed on the lens 64, and a zero point whose position can be adjusted by sliding along the concave groove 65. A transparent slide plate 66, which is an adjustment member, is attached by screws 68. The slide plate 66 is provided with an elongated hole 67. By loosening a screw 68 which penetrates the elongated hole 67 and is screwed into the groove 65, the slide plate 66 can be slid along the groove 65. The zero point can be adjusted by.

That is, the lower surface of the lens 64 is provided with a pair of ridges 64 a, 64 a, which are indices corresponding to the zero points 63 of the scale 62, and the upper surface of the slide plate 66 is a ridge 64 a, which is an index. A line-of-sight position setting convex line portion 66a for setting the line-of-sight position in cooperation with is provided, and as shown by reference numeral E ₁ in FIG. 4, an extension of the index (the convex line portion) 64a and the convex line portion 67a. The line position becomes the line-of-sight position, and by reading the scale 62 from this position, the inclination of the reflector 4 in the left-right direction can be read.

To adjust the zero point, first, the aiming screw 20, which is an aiming mechanism, is rotated to set the position of the reflector 4 to the proper position in the left-right direction (the left-right direction of the optical axis L of the headlamp). The proper position is the inclination of; Next, as shown in FIG. 5, the screw 68 is loosened so that the slide plate 66 can be slid, and the slide plate 66 is brought to a position where the graduation zero point 63 and the index (projection portion) 64a are aligned with the projection portion 6a. 5 and slide the slide plate 66 on the lens 64 by tightening the screw 68 at the position where the scale zero point 63, the index (convex section) 64a and the convex section 66a are aligned as shown by the white arrow in FIG. The zero point can be easily adjusted by setting the eye position E ₂ .

6 and 7 show another embodiment of the present invention. FIG. 6 is a perspective view showing a state in which the tilt measuring device is removed from the lamp body, and FIG. 7 is a longitudinal section of the headlamp at the position of the tilt measuring device. It is a side view. In the first embodiment, the slide plate 66, which is a zero point adjusting member, is fixed to the lens 64 by the screw 68, and the screw 68 is loosened to move the slide plate 66 along the concave groove 65 provided on the upper surface of the lens 64. The structure is such that the zero point can be adjusted by sliding it. However, in this embodiment, the zero point adjusting member is composed of the flexible transparent sticking sheet 76 on which the line-of-sight position setting reference line 76a is printed. . The adhesive agent is applied to the back surface side of the adhesive sheet 76, which can be easily adhered to or removed from the concave groove 65 of the lens 64. The adhesive sheet 76 was removed and aiming was performed. Reattach the adhesive sheet 76 that has been peeled off or attach a new adhesive sheet so that the reference line position setting reference line 76a is on the extension line of the scale zero point 63 of the reflector 4 and the index (protruded line portion) 64a. Therefore, the feature is that the zero point can be easily adjusted.

Although the scale 62 is formed on the upper surface wall of the reflector 4 in the above-described embodiment, the scale 62 is formed on, for example, the outer surface of the reflector 4, and the lamp corresponding to the scale 62 is formed. The structure may be such that a transparent peephole and a zero point adjustment member (slide plate or adhesive sheet) are provided on the outer wall of the body 2. Further, in the above-mentioned embodiment, the disk-shaped lens 64 constituting the peep window 70 is fixed to the opening 2a of the lamp body 2 by the screw 64b, but the fixing means of the lens 64 is fixed by the screw. The fixing structure is not limited to the above, and may be other fixing means such as a fixing structure (see FIG. 10) by bayonet engagement disclosed in the related art.

[0017]

[Effect of device]

 As is clear from the above description, the inclination measuring device for a headlamp for a vehicle according to the present application includes a linear scale provided on the outer wall of the reflector 4 and a transparent sight glass with an index provided on the lamp body 2. Since this observation window is composed of a zero point adjustment member that is provided so that its position can be adjusted along a straight line scale, the number of parts is small and the structure is simple, and the headlamp is also assembled. It has the great advantage that it can be provided easily and at low cost.

Further, since the zero point adjustment can be performed by adjusting the position of the zero point adjusting member so that the reference point position setting reference point is located on the extension line between the scale zero point and the index at the time of aiming, the zero point adjustment is also extremely difficult. Easy to.

[Brief description of drawings]

FIG. 1 is a plan view of a reflector movable headlamp in which an inclination measuring device according to a first embodiment of the present invention is assembled.

FIG. 2 is a vertical sectional view of the same headlamp (see line II- in FIG. 1).
(Sectional view along II)

FIG. 3 is a perspective view showing a state in which the tilt measuring device is removed from the lamp body.

FIG. 4 is a vertical cross-sectional view of the headlamp at the position of the tilt measuring device.

FIG. 5 is a cross-sectional view for explaining how the zero adjustment of the tilt measuring device is performed.

FIG. 6 is a perspective view showing a second embodiment of the present invention in which the tilt measuring device is removed from the lamp body.

FIG. 7 is a vertical cross-sectional view of the headlamp at the position of the tilt measuring device.

FIG. 8 is a front view of a headlamp in which a conventional inclination measuring device is assembled.

FIG. 9 is a plan view of the headlamp.

FIG. 10 is a vertical sectional view of the headlamp at the position of the inclination measuring device.

[Explanation of symbols]

2 lamp body 4 reflector 10 ball joint 20 which is an aiming mechanism 20 left and right aiming screw which is an aiming mechanism 30 vertical aiming screw which is an aiming mechanism 62 linear scale 63 scale zero point 64a convex ridge 66 which is an index slide which is a zero adjustment member Plate 66a Eye line position measurement reference point 70 Peep window 76 Flexible transparent sticking sheet that is a zero adjustment member 76a Eye line position setting reference line

Claims (1)

[Scope of utility model registration request] 1. A reflector having a light reflecting surface for setting an irradiation direction of a lamp, the reflector being supported by an aiming mechanism so as to be capable of tilting in a lateral direction relative to the lamp body, and provided on an outer wall of the reflector along a reflector moving direction. The linear scale provided, a transparent peep window provided in the linear scale corresponding region of the lamp body, an index corresponding to the linear scale provided in the peep window, and attached to the peep window, the index and An inclination measuring device for a headlamp for an automobile, comprising: a line-of-sight position setting reference point for cooperatively setting a line-of-sight position, and a transparent zero-point adjusting member capable of adjusting the position along the linear scale. .