JPH067978Y2 - Vehicle headlight control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle headlamp control device.

(Prior Art) In European countries, particularly in France, so-called leveling units for adjusting the vertical angle of the optical axis are attached to the left and right headlamps of vehicles (see, for example, Japanese Utility Model Laid-Open No. 63-59049). ).

(Problems to be solved by the invention) By the way, recently, since the leveling unit as described above can originally function effectively only when both are normally operating, one unit fails. In such a case, it is required that the other side unit does not operate. In the above-mentioned conventional configuration, usually, each leveling unit for adjusting the optical axis is configured to be connected in parallel to the power source, so that even if one leveling unit fails, the other leveling unit Has a problem that it cannot operate in accordance with the above request because it operates regardless of the above.

(Means for Solving the Problem) The present invention has been made for the purpose of solving the above problems, and provides a leveling unit for adjusting the illumination characteristics corresponding to each of a pair of left and right headlamps. In the vehicle headlamp, each of these leveling units is individually connected to the power source and the ground side and the adjusting operation means side in parallel with each other via a wire harness connector. In addition to the power supply terminal for the leveling unit corresponding to the wire harness connector itself corresponding to each of the wire harness connector corresponding to, the power supply connection terminal connected in series to the power supply terminal of the wire harness connector of the other side leveling unit Each, and once connect to each other the power supply of the other side wire harness connector The power supply terminal of its own wire harness connector is connected to the power source via the terminal.

(Operation) In the configuration of the vehicle headlamp control device of the present invention, each of the power supply terminals to the pair of left and right leveling units provided in each wire harness connector is temporarily connected to the other wire harness connector. Since it is designed to be connected to the power supply only after passing through the power connection terminal of
If any one of them has a poor connection in the connector section, power is not supplied to both of the two leveling units, and it is possible to keep all the leveling units in the inoperative state.

(Effect of the Invention) Therefore, according to the vehicle headlight control device of the present invention, it is possible to provide a highly reliable headlight control device which can sufficiently comply with recent standard requirements with a simple structure. There are benefits.

(Embodiment) FIGS. 1 and 2 show a vehicle headlamp control apparatus according to an embodiment of the present invention.

First, FIG. 2 shows a vehicle body structure of a general automobile 1 which is provided with a pair of left and right headlamps 2L and 2R.

Further, FIG. 1 shows, for example, headlamp / leveling units 3L, 3 for adjusting the optical axis angle, which are provided corresponding to the pair of left and right headlamps 2L, 2R of the automobile 1.
The wiring diagram of R is shown.

In FIG. 1, reference numerals 4L and 4R are wire harness connectors for electrically connecting the headlamp / leveling units 3L and 3R to the power source (+ B) side and the ground (-E) side, respectively. . The wire harness connectors 4L and 4R are composed of leveling unit side terminals (couplers) 4La and 4Ra and power source and ground side terminals (couplers) 4Lb and 4Rb.
.About.e and a'-e ', each of which has five connecting terminals, are detachably connected to each other.

Then, the power supply wirings AL and AR connected to the power supply (+ B) are connected to the first connection terminals a and a '(input side), and the ground wirings CL and CR are further connected to the ground terminals c and c'. Level adjusting wirings BL and BR each having a variable resistor VR for adjusting operation are connected to the optical axis level adjusting terminals b and b '.

Lb, lc, le, lb ', lc', le 'are the terminals b, c, e, b' of the wire harness connectors 4L, 4R, respectively.
Input / output wiring connecting c'and e'to the headlamp units 3L and 3R.

On the other hand, the second connection terminals d, d'connected to the first connection terminals a, a'via the bypass wiring lad, la'd 'are the power supply terminals e'of the other connector 4R or 4L. , E and the other side headlamp / leveling unit are connected to each other via common wirings DE′LR and D′ ERL for supplying power to the other side connector 4R or 4R. Power supply terminal e'or 4L
Power is supplied to each of the terminals e (connected to the power supply + B).

That is, in the case of the configuration of the present embodiment, the current from the power supply (+ B) is first supplied to the first power supply connection terminals a and a'of the wire harness connectors 4L and 4R via the power supply wirings AL and AR, and When the power supply and ground side terminals 4La, 4Ra of the wire harness connectors 4L, 4R and the leveling unit side terminals 4La, 4Ra are normally coupled, the second connection terminal is connected via the bypass wiring lad, la'd '.
It is supplied from d, d'through the common wiring DE'LR, D'ERL to the power supply terminals e, e'of the other side wire harness connector 4L or 4R, respectively. And the power input wiring le,
Each headlamp leveling unit 3 above via le '
An operating voltage is applied to L and 3R.

However, now, either one of the above connectors 4L or 4
If R is not properly coupled, the current supplied as described above is first interrupted at the connection-side connector 4L or 4R, and the power supply terminal e
Alternatively, the power supply terminal e or e of the other connector 4R or 4L is also turned off because the power supply connection terminal ab or a'-d 'is also turned off. Therefore, both wire harness connectors 4L, 4
Both Rs are kept in the power-off state. As a result, the headlamp leveling units 3L, 3R
Do not work together.

[Brief description of drawings]

FIG. 1 is an electrical connection diagram showing a configuration of a vehicle headlamp control apparatus according to an embodiment of the present invention, and FIG. 2 is a vehicle having a headlamp configured with the apparatus. It is a vehicle body front view. 1 ... Automobile 2L, 2R ... Headlamp 3L, 3R ... Headlamp / leveling unit 4L, 4R ... Wire harness connector a, a '... First connection terminal d, d' ... Second connection Terminals e, e '... Power supply terminal VR ... Variable resistance + B ... Power supply

Claims (1)

[Scope of utility model registration request] 1. A leveling unit for adjusting illumination characteristics corresponding to each of a pair of left and right headlamps is provided, and each of these leveling units is individually operated through a wire harness connector on a power source side and an earth side and an adjusting operation. In a vehicle headlamp configured to be connected in parallel with each other on the means side, each wire harness connector corresponding to each leveling unit is supplied with power to the leveling unit corresponding to the wire harness connector itself. Separately from the terminals, power supply connection terminals connected in series to the power supply terminals of the wire harness connector of the other side leveling unit are provided, and the wire harnesses of the other side are temporarily connected to each other via the power supply connection terminals of the other side wire harness connector. Connect the power supply terminal of the connector to the above power supply. Vehicle headlamp control apparatus being characterized in that the.