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Headlamp leveling device

A technology for leveling devices and headlights, which can be used in signal devices, transportation and packaging, and vehicle components, and can solve problems such as the difference in the direction of the left headlight axis

Inactive Publication Date: 2011-04-13
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These errors result in a difference between the orientation of the optical axes of the left and right headlamps

Method used

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Examples

Experimental program
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Effect test

no. 1 Embodiment Construction

[0023] Construction of the first embodiment

[0024] FIG. 3 is a perspective view schematically showing the overall configuration of the headlamp leveling device 10 according to the first embodiment of the present invention.

[0025] As shown, the headlamp leveling device 10 has a line 14L connected to the left headlamp unit 12L. As shown in FIG. 4 , the pipeline 14L is provided with a tube 16 made of flexible synthetic resin or the like and formed into a hollow elongated rope-like shape. A cable 18L as a first connecting means is accommodated inside the tube 16 in such a manner that it can move inside the tube 16 in its longitudinal direction. The vicinity of the front end of the pipe 16 penetrates a vehicle body structural member 22 such as a bumper reinforcement of the vehicle 20 in the vicinity of the headlamp unit 12L.

[0026]As shown in FIG. 4 , the front end of the pipe 16 penetrating through the vehicle body structural member 22 is inserted into a barrel 24 provided...

no. 2 Embodiment Construction

[0056] Second embodiment construction

[0057] Another embodiment of the present invention will be described below. In the embodiments described below, components substantially equivalent to those of the previously described embodiments including the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0058] FIG. 6 is a sectional view showing a schematic configuration of a relevant part of a headlamp leveling device 130 according to a second embodiment of the present invention, corresponding to FIG. 1 .

[0059] As shown in this figure, the headlamp leveling device 130 has a controller 132 instead of the controller 80 . The controller 132 does not have the slider 88 but has the slider 134 as a pulling means. As in the case of the slider 88 of the first embodiment, an internally threaded hole 100 is formed in the slider 134 . The lead screw 92 passes through the internally threaded hole 100 . Unlike the case of the sli...

no. 3 Embodiment Construction

[0062] Construction of the third embodiment

[0063] A third embodiment of the present invention will be described below.

[0064] FIG. 7 is a sectional view showing a schematic configuration of a relevant part of the headlamp leveling device 160 according to the present embodiment, corresponding to the configuration in FIG. 1 .

[0065] As shown, the headlight leveling device 160 has a controller 162 instead of the controller 80 . The controller 162 does not have the slider 88 but has the slider 164 as a pulling means. As in the case of the slider 88 in the first embodiment, an internally threaded hole 100 is formed in the slider 164 . The lead screw 92 passes through the internally threaded hole 100 . However, unlike the slider 88, the slider 164 is formed of a material such as a hard rubber material that is more elastically deformable than a metal block or the like.

[0066] In the slider 88 of the first embodiment, the distance from the internally threaded hole 100 to ...

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PUM

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Abstract

In a headlamp leveling device (10), the distance from a female-threaded hole (100), at a connecting position between a guide screw (92) and a slider (88), to a locking hole (104L) is sufficiently longer than the distance between the female-threaded hole (100) to a locking hole (104R). As a result, a moment (ML) acting on the locking hole (104L) can exceed a moment (MR) acting on the locking hole (104R). Hence, the slider (88) tilts in the orientation of the moment (ML), both during pulling and pullback of wires (18L, 18R), whereby backlash between the slider (88) and the guide screw (92) is absorbed. This allows preventing magnification of errors in the displacement amounts of the wire 18L and the wire (18R) during pulling and pullback. Differences in the orientation of the optical axes of light beams outputted by respective headlamp units (12L, 12R) can be reduced as a result.

Description

technical field [0001] The present invention relates to a headlamp leveling device for adjusting the optical axis direction of a headlamp in a vehicle. Background technique [0002] When passengers sit in the rear seat of the vehicle, or when luggage is stored in the luggage compartment located at the rear of the vehicle, the rear of the vehicle sinks, with the result that even if the optical axis of the headlight is in the so-called "low beam ” setting (where the optical axis is inclined downward relative to the forward direction), the direction of the optical axis of the headlamp also tends to be inclined upward. Therefore, as in, for example, Japanese Patent Application Publication No. 2001-191843 (JP-A-2001-191843), Japanese Utility Model Registration No. 3016074, Japanese Utility Model Application Publication No. 6-75889 (JP-U-6- 75889), Japanese Utility Model Publication No. 61-23482 (JP-Y2-61-23482), and Japanese Patent Application Publication No. 2004-22324 (JP-A-20...

Claims

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Application Information

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IPC IPC(8): B60Q1/072
CPCB60Q1/072
Inventor 都筑克俊
Owner TOYOTA JIDOSHA KK