JPS6243030B2 - - Google Patents

Description

[Detailed Description of the Invention] In a conventional electric automatic door device, when the power is turned on, the way the door moves depends on the position of the door or the control state. It's not uniform.

For example, if the power is turned on with the door partially open and the door suddenly runs at full speed in the closing direction, it is extremely dangerous. This is because, although the above example is a case where the power is turned on manually, the same operation will occur if an instantaneous or short-term power outage occurs during use.

In order to avoid such a danger, the present invention allows the door to run at an extremely slow speed when the power of the automatic door device is turned on, to notify that the door has started to run automatically, and after a predetermined time (after a certain time). (or after the door is fully open or fully closed) the door returns to normal operation. Hereinafter, the present invention will be specifically explained using the drawings.

FIG. 1 is a wiring diagram showing a first embodiment of the present invention. In this example, the door is brought into normal operation after being fully opened or fully closed after a slow start.

In the figure, S ₁ and S ₂ are stop switches installed in a normal automatic door device that operate when the door reaches the left or right stop position, and K ₁ and K ₂ are
Similarly, it is a relay for rotating the door drive motor M to the left or right. 1 is a conventional automatic door controller including a device that generates a power reset signal PR when the power is turned on. In addition, inverters N _{1 and} N ₂ that invert the polarity of the on/off signals of stop switches S ₁ and S ₂ , an OR gate OR that has two inputs of the outputs of these N ₁ and N ₂ , and a controller 1 A signal generating means is connected to the flip-flop FF which is preferentially reset by the PR signal of FF and set by the OR output, and an inverter _N3 which inverts the polarity of the FF output. One end of the door speed switching relay _K3 is connected to the output end of this signal generating means, and the other end of the switching relay _K3 is connected to a DC potential source (+). This DC potential source operates in conjunction with the turning on of AC power, and its polarity must be selected to be the same as the polarity of the output signal of the signal generation means for reasons explained later, but in this example it is (+). . The door drive motor M rotates when the contact _k1 or _k2 of the _K1 or _K2 relay is closed, and a resistor R is connected in series to this, and a door speed switching relay is connected in parallel to this resistor R.
Connect contact _K3 of _K3 . That is, the resistor R is short-circuited by closing the contact _k3 of the switching relay _K3 . Under normal conditions, the _k3 contact is closed to allow the drive motor M to rotate at full speed, but at startup, the _k3 contact is opened and the drive motor current is limited by the resistor R, reducing the motor's driving force and reducing the door speed. Slow speed.

First, normal operation will be explained. When the door is closed, for example, when stop switch S ₁ is opened, S ₂ is closed, relays K ₁ and K ₂ are inactive, and their contacts k ₁ and k _{2 are} closed.
is open. In addition, as described below, inverter
Since the output of N ₃ is low level, relay K ₃ is activated and contact k ₃ is closed. When there is a door open signal (usually a mat signal etc.), for example relay K ₁
operates, contact _k1 closes, motor M rotates, the door moves in the opening direction, and stop switch _S2 opens. When the door is fully opened, the stop switch _S1 is closed and the relay _K1 is deactivated, and the door is stopped. After a certain period of time, the automatic door controller ₁ operates the relay K2 to close the contact _k2 , the door moves in the closing direction, and the stop switch _S1 opens. When the door is fully closed,
Stop switch _S2 closes, relay _K2 becomes inactive, and the door stops and returns to its previous state.

If there is a power outage while the door is running, relay K ₁ ,
Since the DC potential source that operates K ₂ and K ₃ disappears, all relays become inactive. That is, the contact
k ₁ , k ₂ , and k ₃ are all open. Therefore, the door remains in the position at the time of power outage.

Now, when the power is turned on to this device with the door half open, the automatic door controller 1 generates a power reset signal PR, which is sent to the flip-flop FF.
In addition to the reset terminal R of the flip-flop
Reset the FF and set the set side output of the flip-flop FF to a low level. Therefore, the inverter
The output of _N3 becomes high level, and no current flows through the switching relay _K3 , and the contact _k3 remains open. In this case, the automatic door device usually switches on relay K ₁ or I'm getting _K2 to work. Therefore, in such a case, the door will run in either the left or right direction, but since contact _k3 remains open as described above, the door will run in either the left or right direction. However, the motor drive current is limited by the resistor R, resulting in low speed running. When the door fully opens or closes and stops, the left or right stop switch S ₁ or S ₂ is turned on and the inverter is turned on.
A high level signal is applied to the set terminal S of flip-flop FF through _N1 or _N2 and the OR gate OR, setting flip-flop FF. Then, the output of flip-flop FF becomes high level and the output of inverter _N3 becomes low level, so current flows through relay _K3 and contacts _k3
Close the door and the vehicle will run at full speed.

FIG. 2 is a wiring diagram showing a second embodiment of the present invention. In this example, the door returns to normal operation after a certain period of time after a slow start.

In the figure, since the door drive motor circuit is the same as that in FIG. 1, illustration thereof is omitted. In this example,
Only the control method of the speed changeover relay _K3 differs from that shown in FIG. That is, in the case of FIG. 1, the flip-flop FF is reset by the power reset signal PR, but in FIG. Operate K ₃ , contact
Close k ₃ and run at full speed.

As described above, according to the present invention, the above-described danger at power-on can be prevented with a simple configuration.

[Brief explanation of the drawing]

1 and 2 are wiring diagrams showing first and second embodiments of the present invention, respectively. 1...Automatic door controller, M...Door drive motor, R...Resistor, _K3 ...Door speed switching relay, _k3 ...Its operating contact, ( _N1 , _N2 , OR, FF,
N ₃ ), 2... Signal generating means, +... DC potential source.

Claims (1)

[Scope of Claims] 1. An automatic door controller that outputs a signal when power is turned on and controls the operation of the door drive motor; a resistor connected in series to the door drive motor; and a resistor connected in parallel to the resistor. a signal generating means that is connected to the automatic door controller and generates an output signal for a predetermined time based on the signal of the controller, one end of which is connected to the output end of the signal generating means. is,
a door speed switching relay whose other end is connected to a DC potential source of the same polarity as the output signal of the signal generating means, and when the power is turned on, the potential of the DC potential source and the potential of the output signal of the signal generating means are connected. A slow start automatic door device characterized in that the door speed switching relay is made inactive for a predetermined period of time, and its operating contacts are kept open. 2. Claim 1, wherein the signal generating means generates an output signal until the door reaches the left or stopping position.
Slow-start automatic door device as described in section. 3. The slow start automatic door device according to claim 1, wherein the signal generating means is a timer.