JPH0541991U - Sliding door power supply circuit - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to surely cut off the power supply to the power supply connector exposed when the door is opened in the power supply circuit of the sliding door. [Structure] Insert the front safety relay (7), rear safety relay (8), door lock switch (9), and power switch (10) in the power supply circuit C to the sliding door (3),
(3) When opened, turn off the power supply switch (10) to shut off the power supply to the vehicle body side connector (4).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a circuit for supplying power to a load such as a window glass opening / closing motor of a slide door.

[0002]

[Prior Art]

 As shown in FIG. 2, for example, a sliding door (3) is attached to the entrance / exit (2) of a car body (1) of a one-bock type automobile, and the window glass installed in the sliding door (3). Power supply connectors (4,5) are attached to the vehicle body (1) side and the slide door (3) side, respectively, in order to supply power to the load such as the open / close motor, and the slide door (3) is closed. The power supply connectors (4,5) are connected to each other.

Conventionally, as shown in FIG. 3, the power supply circuit C of the slide door (3) is directly connected to the vehicle body side connector (4) from the power source E through the ignition switch (6). ..

In the above power supply circuit C, if the door (3) is closed, the vehicle body side connector (4) and the door side connector (5) are connected, and if the ignition switch (6) is turned on, the circuit C is switched from the power source E. Power is supplied to the load M on the side of the door (3) via the door.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, the connectors (4,5) are exposed when the door (3) is opened, but the vehicle body-side connector (4) is supplied with power from the power source E when the switch (6) is ON. There is a risk of electric shock or leakage, and if water leaks, there is a risk of current leakage and battery drain.

[0006]

[Means for Solving the Problems]

 As a means for solving the above conventional problems, the present invention provides a power supply connector (4,5) on the vehicle body (1) side and the slide door (3) side in a vehicle slide door (3), and In the power supply circuit C of the sliding door (3) in which the vehicle body side connector (4) and the door side connector (5) are connected with the door (3) closed, from the power source E to the vehicle body side connector (4) A two-contact type front stage safety relay (7) is interposed in the circuit, and the safety relay (7) is set so that the two contacts (72, 73) are OFF respectively when the exciting coil (71) is energized. In addition, a one-contact type post-stage safety relay (8) is interposed after the safety relay (7), and the safety relay (8) connects the energizing contact (82) to the exciting coil (81). ) Is set to ON, and the exciting coil (71) of the front safety relay (7) is connected to the door (3) It is grounded via a door lock switch (9) that is turned on when closed, and the exciting coil (81) of the latter-stage safety relay (8) turns on the power supply switch (10) that is turned on by sliding the slide door (3). It provides a power supply circuit for the sliding door that is grounded through the door.

[0007]

[Action]

 When the slide door (3) is open, the door lock switch (9) is OFF, the exciting coil (71) of the front safety relay (7) is not energized, and the contacts (72, 73) are ON, the rear stage The safety relay (8) is energized, but the power supply switch (10) is off, so the vehicle body side connector (4) is not energized. The power switch (10) is turned on by closing the door (3), the exciting coil (81) of the rear safety relay (8) is energized, the contact (82) is turned on, and the vehicle body side connector (4) ) Is energized. When the door (3) is closed, the vehicle-body-side connector (4) and the door-side connector (5) are connected to each other to supply power to the load M on the door (3) side. When the door (3) is locked, the door lock switch (9) is turned on, the exciting coil (71) of the front safety relay (7) is energized, the contacts (72, 73) are turned off, and the rear safety switch (7) is turned off. Power will not be supplied after the tea relay (8).

[0008]

【Example】

 The present invention will be described with reference to an embodiment shown in FIG. 1. In a power supply circuit C for a sliding door (3) which is connected to a power source E through an ignition switch (6), an exciting coil (71) and a contact ( Two-contact type front safety relay (7) consisting of (72, 73) and the latter safety relay (8) consisting of exciting coil (81) and contact (82) The end of the circuit C is connected to the vehicle body side connector (4).

The exciting coil (71) of the front-stage safety relay (7) is turned on when the door (3) is locked, and is grounded via the door lock switch (9), and is connected to the rear-stage safety relay (8). The exciting coil (81) is grounded via the power supply switch (10) which is turned on by sliding the door (3).

The operation of the power supply circuit C will be described below. When the door (3) is open, the door lock switch (9) is OFF, the power supply switch (10) OFF is not energized to the exciting coil (71) of the front safety relay (7), and the contacts (72,73) are It is turned on, and therefore the rear safety relay (8) is energized, but the vehicle-side connector (4) is not energized. When the door (3) is closed, the power supply switch (10) is turned on, the exciting coil (81) of the rear safety relay (8) is energized, the contact (82) is turned on, and even the vehicle body side connector (4) is energized. (3) In the closed state, the vehicle body side connector (4) and the door side connector (5) are connected and the load M on the door (3) side is energized. When the door (3) is locked, the door lock switch (9) is ON, the exciting coil (71) of the front safety relay (7) is energized, the contacts (72, 73) are OFF, and the rear safety relay (8) is energized. Be refused.

[0011]

[Effect of the device]

 Therefore, according to the present invention, when the sliding door is opened, no electric current is passed through the connector on the vehicle body side, so there is no risk of electric shock or leakage, and current leakage due to water leakage or battery rise is surely prevented.

[0012]

[Brief description of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention.

[Figure 2] Side view of the car body

FIG. 3 is a circuit diagram of a conventional example.

[Explanation of symbols]

 1 Vehicle body 3 Sliding door 4 Vehicle side connector 5 Door side connector 7 Front safety relay 71 Excitation coil 72,73 contact 8 Rear safety relay 81 Excitation coil 82 Contact 9 Door lock switch 10 Power switch E Power supply C Power supply circuit M load

Claims (1)

[Scope of utility model registration request] 1. A power supply circuit for a slide door of a vehicle, wherein power supply connectors are provided on a vehicle body side and a slide door side, and the vehicle body side connector and the door side connector are connected to each other when the slide door is closed. , A two-contact type front-stage safety relay is interposed in the circuit from the power source to the connector on the vehicle body side, and the safety relay is set so that the two contacts are turned off when the exciting coil is energized. A one-contact type post-stage safety relay is interposed in the rear stage of the relay, and the safety relay is set so that the contact turns ON when the exciting coil is energized. The exciting coil of the pre-stage safety relay turns ON when the door is locked. It is grounded via the door lock switch, and the exciting coil of the latter-stage safety relay is Feed circuit of the sliding door, characterized in that it is grounded through the power supply switch turned ON by moving