JPH0526696B2 - - Google Patents

Abstract

PURPOSE:To aim at simplification in a wiring process and a circuit structure, by connecting a relay coil to a power source inside a relay when both first and second switches is made into being relayed, but when not relayed, holding these first and second switches in common with a light switch. CONSTITUTION:When both first and second switches 25 and 26 are made into being relayed and a light switch 28 is turned off, a relay coil 27 is demagnetized whereby the first switch 25 is closed. And, a motor relay 31 is excited by the switch 32 selected to a housing circuit 22, whereby a motor 30 is driven and head lamps 20 are housed. And, when the light switch 28 is turned on, the relay coil 27 is excited, the second switch 26 is closed, and the motor relay 31 is also excited by the switch 32 selected to a exposure circuit 21, then the motor 30 is driven, thus these headlamps 20 are exposed. When these first and second switches are not relayed, both these switches are used for the light switch 28 in common, omitting the light switch 28.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improvements in retractable headlamp drive circuits.

(Prior Art) Conventionally, as shown in FIG.
It is swingably supported by a link mechanism 4 interlocked with the
A retractable headlamp is proposed that is swung downwards and stored inside the vehicle body when not in use (see solid line D), and when in use is swung upwards to be exposed outside the vehicle body (see two-dot chain line U). has been done.

As shown in FIG. 4, the drive circuit for such a retractable headlamp includes an exposure circuit 5 and a storage circuit 6 that expose and store the headlamp 2, and an exposure switch 7 and a storage circuit that switch the exposure and storage of the headlamp 2. Storage switch 8
A first switch 9 and a second switch 10 are provided. When the light switch 11 is turned on, the headlamp 2 lights up, the relay coil 13 is energized, the second switch 10 is closed, and the exposure circuit 5 is activated. Then, when the light switch 11 is turned off, the headlamp 2 is turned off, the relay coil 13 is demagnetized, the first switch 9 is activated, the storage circuit 6 is activated, and the headlamp 2 is retracted. On the other hand, regardless of whether the headlamp 2 is on or off, when the exposure switch 7 is turned on, the exposure circuit 5 is activated and the headlamp 2 is exposed; when the storage switch 8 is turned on, the storage circuit 6 is activated and the headlamp 2 is exposed. has been proposed (see Japanese Utility Model Application Publication No. 58-68343).

By the way, in this drive circuit, one ends of the exposure switch 7 and the storage switch 8 are directly connected to the power supply, one ends of the first switch 9 and the second switch 10 are connected to the power supply via the storage switch 8, and the second end is connected to the power supply via the storage switch 8. The other end of the switch 10 is connected to the other end of the exposure switch 7 and the exposure circuit 5, and the other end of the storage switch 8 is connected to the storage circuit 6.

Therefore, when the first and second switches 9 and 10 are made into relays, it is necessary to route the power supply line 14 inside the vehicle for connecting the relay coil 13 to the power source, which complicates the wiring process. There was a problem.

(Object of the Invention) The present invention has been made in view of the above conventional problems, and it simplifies the wiring process when the first and second switches are made into relays, and also simplifies the wiring process when the first and second switches are made into relays. It is an object of the present invention to provide a new retractable headlamp drive circuit that allows the first and second switches to be used as a light switch if the retractable headlamp is not used.

(Structure of the Invention) Therefore, the present invention provides a headlamp that is installed in a vehicle body so as to be exposed and retractable, and an exposure circuit and a storage circuit that expose and retract the headlamp in response to turning on and off the headlamp. An exposure switch and a storage switch that switch exposure and storage of the headlamp regardless of whether the headlamp is on or off; a first switch that is closed when the headlamp is turned off; and a second switch that is closed when the headlamp is turned on. one end of the first switch and the second switch are directly connected to a power supply, one ends of the exposure switch and the retraction switch are connected to the power supply via the first switch, and the other end of the exposure switch is connected to a second The other end of the retractable switch is connected to the other end of the switch and the exposed circuit.
The configuration is such that it is connected to a storage circuit.

(Effects of the Invention) According to the present invention, when the first and second switches are made into relays, the relay coil can be connected to the power source within the relay, so there is no need to route the power supply line inside the vehicle as in the conventional case. This eliminates the need for wiring and simplifies the wiring process.

Furthermore, if the first and second switches are not relayed, the light switch can be omitted and the first and second switches can be used in common as a light switch, thereby simplifying the circuit configuration.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 1 and the specific circuit shown in Fig. 2, the left and right headlamps are used to expose (V) and retract (D) the headlamp 20 (only one of the left and right lamps is shown). 20 exposed circuits 21
(L, R) and a storage circuit 22 (L, R), an exposure switch 23 and a storage switch 24 that switch exposure and storage of the headlamp 20, a first switch 25 and a second switch 26, and a light switch 2
8 and a lamp relay 29.

The exposure circuit 21 and storage circuit 22 include a drive motor 30 for exposing and retracting the headlamp 20, a motor relay 31 for driving and stopping the drive motor 30, and a position where the headlamp 20 is completely exposed. At the same time, the drive motor 30 is switched to the storage circuit 22, and the headlamp 2
A changeover switch 32 is provided for switching the drive motor 30 to the exposure circuit 21 at the fully retracted position.

The first and second switches 25 and 26 are configured as relays, and when the light switch 28 is turned off (when the headlamp 20 is turned off), the relay coil 27 is demagnetized, the first switch 25 is closed, and the light switch 28 is turned on. (when the headlamp 20 is lit), the relay coil 27 is energized and the second switch 26 is activated.
is beginning to close.

One ends a of the first switch 25 and the second switch 26 are directly connected to the power supply (+B), and one ends b of the exposure switch 23 and the storage switch 24 are connected to the power supply (+B) via the first switch 25. On the other hand, the other end c of the exposure switch 23 is connected to the other end d of the second switch 26 and the exposure circuit 21, and the other end e of the storage switch 24 is connected to the storage circuit 22.

Here, when the first and second switches 25 and 26 are made into relays, the relay coil 27 is connected to the power supply (+B) together with one end a of the first and second switches 25 and 26 within the relay 33. This simplifies the wiring process.

With the above configuration, when the light switch 28 is turned on from the state where the headlamp 20 is currently stored, the lamp relay 29 is energized and the headlamp 20 is turned on, and the relay coil 27 is energized and the light is turned on. 2 switch 26 is closed, and the changeover switch 3 is switched to the exposed circuit 21.
2, the motor relay 31 is energized, the drive motor 30 is driven, and the headlamp 20 is exposed.

When the headlamp 20 is completely exposed, the selector switch 32 is switched to the storage circuit 22, so the motor relay 31 is demagnetized and the drive motor 3 is switched off.
0 stops.

Next, when the light switch 28 is turned off, the lamp relay 29 is demagnetized, the headlamp 20 is turned off, the relay coil 27 is demagnetized, the first switch 25 is closed, and the changeover switch 32 which has been switched to the storage circuit 22 is turned off. As a result, the motor relay 31 is activated, the drive motor 30 is driven, and the headlamp 20 is retracted.

When the headlamp 20 is completely retracted, the selector switch 32 is switched to the exposure circuit 21, so the motor relay 31 is demagnetized and the drive motor 3
0 stops.

On the other hand, when leaving the headlamp 20 exposed regardless of whether the headlamp 20 is on or off,
When the exposure switch 23 is turned on, the first
switch 25, exposure switch 23, exposure circuit 21
The motor relay 31 is energized by the changeover switch 32, and the drive motor 30 is driven to expose the headlamp 20. Thereafter, the changeover switch 32 is switched to the storage circuit 22, and the drive motor 30 is stopped.

Next, when the storage switch 24 is turned on, the motor relay 31 is energized by the first switch 25 in the closed position, the storage switch 24, and the changeover switch 32 switched to the storage circuit 22.
0 is driven to retract the headlamp 20, and then the selector switch 32 is switched to the exposure circuit 21 and the drive motor 30 is stopped.

In the above embodiment, the first and second switches 2
5 and 26 are not relayed, the light switch 28 is omitted and the first and second switches 25,
26 can be shared as a light switch, and the circuit configuration can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a basic circuit diagram of a drive circuit according to the present invention,
Figure 2 is a specific circuit diagram of Figure 1, Figure 3 is a sectional view of an automobile equipped with a retractable headlamp,
FIG. 4 is a conventional drive circuit diagram. 20...head lamp, 21...exposed circuit, 2
2... Storage circuit, 23... Exposure switch, 24...
...Retraction switch, 25...First switch, 26...
...Second switch, 28...Light switch.

Claims (1)

[Scope of Claims] 1. A headlamp installed on the vehicle body so that it can be exposed and retracted; an exposure circuit and a storage circuit that expose and retract the headlamp in response to turning on and off the headlamp; and lighting of the headlamp. and regardless of whether the lights are off or not.
It is equipped with an exposure switch and a retraction switch for changing exposure and storage of the headlamp, a first switch that is closed when the headlamp is turned off, and a second switch that is closed when the headlamp is turned on, and the first switch and the second switch are One end is directly connected to the power supply, and one end of the exposure switch and retraction switch is
The exposure switch is connected to a power source via a first switch, the other end of the exposure switch is connected to the other end of the second switch and the exposure circuit, and the other end of the storage switch is connected to the storage circuit. A retractable headlamp drive circuit.