JPS6047721A - Safety device for auto door for car - Google Patents

Abstract

PURPOSE:To permit an automatic door to be opened and closed safely by installing a switch which is linked with an accelerator pedal, thus permitting the automatic door to be opened and closed only when the switch is closed and preventing the automatic door from being opened during traveling and generating alarm when the door is not perfectly closed. CONSTITUTION:A magnet 2 is installed onto the edge part of an acceleration pedal 1. A lead switch 3 fixed onto a chassis which is set close to the magnet 2 is closed by the magnet 2 when the pedal 1 is not stepped-in, and the switch 3 is opened during traveling. A door opening and closing switch 15 connected to a feeding circuit 7 has a door opening contact C and a door closing contact D, and the coil 11a of a door opening relay 11 and a limit switch 16 which is opened when a door is perfectly opened are connected in series with the door opening contact C, and the coil 13a of a door closing relay 13 and a limit switch 17 which is opened when the door is perfectly closed are connected in series with the door closing contact D, and an alarm buzzer 18 and a diode 19 are connected in series between a switching relay contact A and the connection point Q between the coil 13a and the switch 17.

Description

[Detailed description of the invention] This invention relates to a safety device for automatic doors of automobiles.

For safety reasons, the automatic door of a car should only open when the car is stopped, and never open while the car is driving, even if the door is accidentally opened.

It is an object of the present invention to provide a safety device for automatic doors of automobiles that satisfies such requirements, and for this purpose, the present invention includes a switch that interlocks with the accelerator pedal and a key switch so as to close only when the accelerator pedal is not depressed. and a control circuit that enables the automatic door to be opened and closed only when the switch is closed and that the automatic door cannot be opened and closed when the switch is open, and when the automatic door is not completely closed. The alarm system is configured to activate immediately when the accelerator pedal is pressed.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Illustrated embodiments of the invention will be described below.

The accelerator pedal 1 has a magnet 2 at the end that swings when depressed.
is attached and is fixed to the vehicle body in close proximity to the magnet 2. The circuit is closed by the magnet 2 when the accelerator pedal 1 is not depressed, that is, when the vehicle is stopped, and the circuit is opened when the accelerator pedal is depressed while driving. be done. One terminal of the reed switch 3 is connected to the battery via a key switch 4, and the other terminal is connected to the coil of a switching relay 5, and the switching contact piece 6 of the relay 5 is connected to the power supply of a reversible motor for opening and closing the door, which will be described later. Connected to circuit 7, and when the coil is energized, contact B
The contact is closed to the A side, but when there is no current, the contact switches to the A side.

The power supply circuit 7 is connected to the battery through the fuse 8 and the key switch 4, and the load side from the connection point P with the switching contact piece 6 is as follows.
After passing through the normally open contact 1° of the main relay 9, it branches and connects to the normally open contact 12 of the door opening relay 11 and the normally open contact 14 of the door closing relay 13, and the coil 9a of the main relay 9 is a switching relay. Connect to contact B.

Door opening/closing switch 15 connected to power supply circuit 7 Door opening contact C
and a door closing contact C, and the door opening contact C has a door opening relay 1.
The coil Ila of 1 and the limit switch 16 that opens when the door is completely opened are connected in series, and the coil 13a of the closing relay 13 and the limit switch 17 that opens when the door is completely closed are connected in series to the closing door contact.
The coil 13a and the limit switch 17 are connected in series.
Alarm buzzer 1 is connected between the connection point Q and the switching relay contact A.
8 and a diode 19 are connected in series.

The reversible door opening/closing motor 20 has two field coils for forward and reverse rotation, and when powered from the contact 12, rotates in the door opening direction.
Further, when power is supplied from the contact 14, it rotates in the door closing direction. When the door is completely opened or closed, the limit switch 16 or 17 is opened, the relay 11 or 13 is deenergized, and the motor 20 is stopped.

Next, to explain the present invention in detail, when the accelerator pedal is depressed while driving, the switch 3 is opened, and the switching relay 5 is opened.
is switched to the contact A side, and the main relay 9 is deenergized. Therefore, even if the door opening/closing switch 15 is operated, the motor 20 does not rotate and the door cannot be opened or closed. However, when stopped, switch 3
is closed, and the door can be opened and closed by operating the door opening/closing switch 15.

Furthermore, if the accelerator pedal 1 is pressed to start when the automatic door is not completely closed, the reed switch 3 opens, the relay 5 is deenergized, and the switching contact 6 is switched to the contact A side. At this time, the limit switch 17 is closed because the door has not been closed yet, so the buzzer 18 is activated to notify the driver of danger.

The reversible door opening/closing motor 20 may have a structure in which the armature current direction is switched for one field coil, and in that case, normally open contacts of relays 11 and 13 may be further inserted into the armature circuit.

Also, non-contact relays such as relays 5, 9, 11, and 13 may be used.

The present invention has the above configuration, and the automatic door can be opened while the car is running, and if an attempt is made to start when the automatic door is not completely closed, the alarm device is activated and alerts the danger. Not only can it be opened and closed safely, but the structure is extremely simple.

[Brief explanation of the drawing]

The drawing is an electrical circuit diagram of an embodiment of the present invention. 1... Accelerator pedal 2... Magnet 3... Switch 5... Switching relay 7... Power supply circuit 9... Main relay 11... Door opening relay 13... Door closing relay 17
...Limit switch 18...Alarm device agent
Patent attorney Yuyosuke - 1 other person

Claims (1)

[Claims] A switch that closes only when the accelerator pedal is not pressed, a switching relay that operates when the switch is closed, a main relay that is energized when the switching relay is activated and closes the power supply circuit of a reversible motor for opening and closing automobile doors, and an opening switch for opening and closing the door. A door-opening relay and a door-closing relay that are energized by the door operation or door-closing operation and energize the reversible door opening/closing motor from the power supply circuit so as to rotate in the door opening direction or the door closing direction, and a door closing relay that opens and closes when the door is closed. A safety device for an automatic door of an automobile, which has a limit switch that is deenergized and an alarm IIJ device that is energized via the limit switch when a switching relay is not activated.