JPS63118482A - Automatic door switchgear with safety mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application In a broad sense, the present invention relates to automatic door opening 1r4 equipped with a safety mechanism.
In the present invention, a door refers to a door that opens and closes automatically, such as an elevator door, an automatic store door, a girl wing type car door, etc. Auto rM for car doors
This shall also include related window glass.

Therefore, in order to improve the ease of getting in and out of a car, the present invention is designed to prevent foreign objects from getting caught when opening and closing windows automatically in synchronization with the opening and closing of the door. In the present invention, which relates to an automatic shutoff device that operates horizontally, doors and windows are treated as equivalent objects.

BACKGROUND OF THE INVENTION A motorized window rM opening/closing device is known that automatically opens a window of a vehicle if a foreign object is caught in the window when the window is opened. P? 4. For example, according to a control device for a vehicle window glass described in Japanese Patent Publication No. 5011647, a push switch is provided in line with the gasket with which the edge of the window glass is supposed to come into contact when the window glass is closed. , when this switch is pressed, it is determined that a foreign object has been caught.

On the other hand, according to the power-driven window glass raising and lowering method described in Japanese Patent Publication No. 55-1436, a timer is provided, and when the window glass rises for a period longer than the time set on the timer,
It is determined that a foreign object was caught.

Problems to be Solved by the Invention The present invention presupposes an automatic window opening device as mentioned in the beginning, and therefore the device according to the invention is particularly useful for automobiles with windows without frames, so-called satsileless windows. It is suitable for

In such automobiles, there is no place to install a push switch like the vehicle window glass w control device described in Japanese Patent Publication No. 11647/1982, or even if there is an appropriate place, such a switch cannot be installed. Installation is extremely difficult. Moreover, this known device requires extra parts, which complicates its construction. Moreover, since this part is a mechanical part, if it is to be installed later on an existing car, it will require mechanical changes to the car itself, and in fact, it is impossible to install it in an existing car.

On the other hand, in the powered window glass raising and lowering method described in Japanese Patent Publication No. 55-1436, the TJI wr of the pinching is performed only after the time set on the timer, so this method is fundamentally not effective in protecting the occupants. is of no use because, for example, if a human body is trapped, it must remain trapped for the aforementioned set time, and it is not guaranteed that no serious damage will occur to the human body during that time. be.

An object of the present invention is to provide an automatic door opening/closing device that is easily configured, operates reliably, and is equipped with the above-mentioned safety mechanism that can reliably prevent injury to the human body due to entrapment.

Furthermore, the device according to the invention can be easily integrated into existing motor vehicles equipped with a powered door opening/closing system or a powered window opening/closing system.

Means for solving the problem According to the invention, this object is achieved as follows. That is, a timer connected to the door opening/closing command switch is provided, and the door driving device is connected to the timer, the automatic shutoff device, and the door 11F! It is connected to a power supply via a door opening current circuit consisting of an if command switch, and on the other hand, it is connected to a power supply via a door closing current circuit consisting of an automatic cutoff device and a door opening/closing command switch. ) A time comparator connected to the door driving device side of the same current circuit and the timer, and an emergency switch circuit connected to this time comparator, and this emergency switch circuit is connected to the door opening/closing command switch operating member. and the time comparator output temporarily switches the door 1M leap command switch to the open side, and if the current supply period when the door is opened is shorter than the timer setting time, The door will open automatically.

Function The automatic door opening/closing device according to the present invention uses an automatic shutoff device, that is, a device that cuts off the current supply to the motor by detecting an excessive current when the motor is stopped by an external force. This automatic shutoff device terminates the operation of the door when the door is fully closed or fully opened.

The present invention is premised on the idea that the time it takes to open a door a given amount is substantially equal to the time it takes to close it by the same amount. Although it may take some extra time to open the door, the idle time is rarely shorter, so the door is fed to the door drive in less time than the dark time. What if the voltage applied is cut off by an automatic cut-off device? It can be concluded that there are 4 objects in between.

When the automatic door opening device according to the present invention is used in the automatic window opening device as described above, the opening/closing device is activated by the window opening command switch that is operated when the door is unlocked or the door is opened. , the window is activated by the window IMrM command switch, which drives the motor for a certain period of time determined by the timer to open the window, and is operated in the opposite direction when the door is locked or closed.
During normal operation, the window will close for this amount of time or longer.

The time comparator compares the voltage of the timer, which is also started when closing the window, with the window closing drive voltage, and if this drive voltage drops to 0 earlier than the timer voltage, it is determined that a foreign object has been caught. I judge that. At this time, the time comparator activates the emergency switch circuit and opens the window again.

Embodiments Examples of the present invention will be described below with reference to the drawings. The device according to the invention is used here as an automatic window opening/closing device.

The drive unit 1 of the window opening motor is connected on the one hand to the power supply VCC via an automatic cut-off device 2, a normally open contact of a window opening m relay 4 and a normally open contact of a timed window opening relay 5, and on the other hand. It is connected to the power supply Vcc through the normally in contact of the automatic shutoff device 2 and the window opening/closing relay 4.

Window open ■One terminal of the coil of relay 4 is connected to the power supply VCC,
One terminal of the coil of the zero time window opening relay 5 whose other terminal is connected to ground via the diode DI and the door switch 3 is likewise connected to the power supply Vcc, and the other terminal is connected to the switch of the transistor T1. It is connected to earth through the section. The control terminal of this transistor T1 is connected to the output terminal of a timer 6 consisting of an EXOR gate and an attached CR circuit, and the trigger input terminal of this timer 6 is connected to the door switch 3 via a diode D2.

In this embodiment, the door switch 3 is closed when the door is opened, so the relay 4 is energized via the switch 3 at this time. At this time, the energizing signal and the recovery signal of the relay 4 are simultaneously supplied to the reset input terminal of the automatic shutoff device 2 via a signal processing circuit (not shown), and therefore the automatic shutoff device 2 is reset every time the door will Will. The device will remain ready to supply power until the next time it is shut off.

Therefore, when the door is opened, the respective switches and contacts are in the state just shown, and the motor drive unit 1 is then powered via the automatic shut-off device 2 and the normally open contacts of the relay 4, when the window is opened. Ru. When the window is completely closed, the automatic shutoff device 2 stops supplying power to the motor drive unit l.

On the other hand, when the door is opened, the door switch 3 is turned on. At this time, the relay 4 is energized and the attached contacts are switched to the normally open side. At this time, the timer 6 is simultaneously triggered via the diode D2, making the transistor Tl conductive. Relay 5 is therefore also energized and the associated contacts are closed. Thereby, the motor drive unit 1 is supplied with power via the automatic cut-off device 2, the normally open contact of the relay 4 and the normally rM contact of the relay 5, and when the window is opened and the time set in the timer 6 has elapsed, the relay 5 is restored. However, the window stops at a predetermined opening position at this time.

The device according to the invention is also provided with a NAND gate 8 forming a time comparator, one input of which is connected via an inverter 7 to the closing input of the motor drive unit 1. has been
The other input terminal is connected to the output terminal of timer 6. The output terminal of this NAND gate 8 has two NAND
It is connected to the trigger input terminal of a monostable multivibrator 9 consisting of a D gate L~ and an attached Cr (circuit).The output terminal of this monostable multivibrator 9 is connected to the control terminal of the transistor T2, and this transistor T
The switch section 2 is connected in series with the diode D3, and the series circuit shown here is connected between the coil of the relay 4 and ground.

Automatic shutoff device 2 that was reset when the door was opened
Voltage is supplied to the motor drive unit 1 via the normally open contacts of the relay 4 and the normally open contacts of the relay 4 . The NAND gate 8 compares this voltage with the output of the timer 6 triggered at this time. When the voltage becomes 0 while the timer 6 continues to output, the output of the inverter 7 becomes 1, and at this time N
AND gate 8 produces an output. This indicates that the window opening time was shorter than the window opening time, and that something was caught when the window was opening, causing the automatic shutoff device 2 to stop power supply.

The output of the NAND gate 8 is spread to a predetermined width by a monostable multivibrator 9, and this signal turns on the transistor T2, energizes the relay 4 for a predetermined period, and switches the contact to the open side. At this time, the automatic shutoff device 2 is reset at the same time. The window is thereby opened for a predetermined period of time and the trapped object can be removed.

Effects of the Invention The structure of the automatic door ffFI closing device according to the present invention is simple and can reliably detect entrapment. Moreover, since most of the parts that need to be added to detect entrapment are electronic parts, they can be easily incorporated into existing electric door opening/closing devices.

What is the reference time for opening time and pinch detection?
Since they are formed by the same timer, there is essentially no need for adjustment during installation.

BRIEF DESCRIPTION OF THE DRAWINGS The figure is a block diagram showing an embodiment of an automatic door opening/closing device according to the present invention. 1-Motor drive unit...I, 2-Automatic cut-off device, 3-
Door switch, 4.5-relay, 6-timer, 7-inverter, 8-time comparator, 9-monostable multivibrator

Claims (1)

[Claims] (1) When automatically opening and closing at least part of the door,
In particular, automatic door opening/closing devices that activate a safety mechanism if a foreign object is caught during closing are equipped with a timer connected to the door opening/closing command switch, and the door driving device controls the timer, the automatic shutoff device, and the door. It is connected to a power source through a door opening current circuit consisting of an opening/closing command switch, and on the other hand, it is connected to a power source through a door closing current circuit consisting of an automatic shutoff device and a door opening/closing command switch. A time comparator connected to the door drive device side and the timer, and an emergency switch circuit connected to the time comparator are provided, and this emergency switch circuit is connected to the operating member of the door opening/closing command switch. , and the output of the time comparator temporarily switches the door opening/closing command switch to the open side, thereby temporarily opening the door if the current supply period when closing the door is shorter than the set time of the timer. An automatic door opening/closing device equipped with a safety mechanism.