JPH0313507Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control device for an elevator top door that controls the operation of a top door that opens and closes in the vertical direction.

[Prior art] As shown in Japanese Utility Model Application Publication No. 52-64467, an elevator equipped with an upper sliding door is provided with a locking switch, and when the car is not stopped at the floor, the locking switch is installed. The hall side door is mechanically locked via the switch hook, preventing it from being opened. When the car stops at that floor, the above-mentioned hook is activated and unlocked by the car's operating mechanism, whereby the car door and the hall side door are opened and closed as one unit.

By the way, the above-mentioned locking switch hook may not operate sufficiently unless the operation mechanism operates properly, and the door may open without being unlocked, resulting in both doors being locked.

Although the subject matter is different from the present application, in the case of elevators equipped with horizontal sliding doors, a mechanical overload detection device is installed as shown in Japanese Patent Publication No. 55-3271, and the door is opened. Conventionally, a technique has been proposed in which an overload detection device is activated when a door is restrained inside, and in response, an electric motor is activated to perform a reversal operation of the door, that is, a door closing operation, thereby resolving the restraint condition.

[Problem to be solved by the invention] The above-mentioned conventional technology is aimed at a horizontal sliding door, and is applied as is to a control device that controls the operation of a vertical sliding door, which is the object of the present invention. It is not possible. In other words, if the above-mentioned conventional technology is applied as is to a control device for a top sliding door, which is the object of the present invention, if the top sliding door is opened relatively widely, for example, when it is opened near the center position in the fully open area. If the door is restrained while it is operating, the overload detection device will immediately activate and the door will be reversed or closed. However, if there is a person's head below the door at this time, the lower edge of the door may hit the head. There is a concern that this may cause a serious accident. This is an accident based on the fact that people generally have relatively good visibility horizontally and downwards, but cannot reach upwards unless they are very careful. be. Incidentally, elevators equipped with horizontal sliding doors such as those in the prior art are equipped with a safety system, and if a person's body or the like is caught during the door closing operation, the door opens immediately and the narrow door is closed. The person who is hit can escape through the door, and there is no risk of serious accidents such as direct hits to the head, as would be the case in elevators with upward sliding doors.

The present invention has been developed in view of the above-mentioned actual situation in the prior art, and its purpose is to provide an elevator platform that can reverse the operation of the door in order to prevent accidents such as direct hits to people's heads when restraining the door. An object of the present invention is to provide a control device for a sliding door.

[Means for Solving the Problems] In order to achieve this object, the present invention provides a control device for an elevator top door that controls the operation of a top door that opens and closes in the vertical direction. a zone detection device that detects the zone detection device; a reversal execution means that reverses the top sliding door when the top sliding door is restrained during the opening operation in an area where the zone detection device generates an output; The present invention is configured to include a reversal restricting means for disabling the reversing operation of the upper sliding door when the upper sliding door is restrained during the opening operation in a region where the upper sliding door does not occur.

[Function] Since the present invention has the above-mentioned structure, there is no risk of direct hit to the head or the like during the opening operation of the door.
In addition, if the door is restrained near the closed end of the door, which is relatively visible to the human eye, the reversal execution means performs a door reversal operation, that is, a door closing operation, in accordance with the output from the zone detection device. This makes it possible to release the door restraint conditions.On the other hand, if the door is restrained in a position where there is a risk of a direct hit to the head or the like, or where it is relatively difficult for the human eye to see, the restraint condition can be removed. Since the position is far from the vicinity of the closed end of the door, no output is generated from the zone detection device, and in response to this, the door is reversed by the reversal restricting means, and the door is not closed and remains in a restrained state. Therefore, accidents such as direct hits to people's heads can be reliably prevented.

[Example] Hereinafter, an example of the control device for an elevator top door according to the present invention will be described based on the drawings.

FIG. 1 is a circuit diagram showing the basic configuration of an embodiment of the present invention, and FIG. 2 is a diagram showing the arrangement of a zone detection device provided in this embodiment.

As shown in Fig. 2, a zone detection device Z is attached to the car part located near the closing bridge of the car door D that opens and closes in the vertical direction, and a lever of the zone detection device Z is installed near the lower end of the car door D. A cam K is installed to generate output by kicking the motor.

In addition, the circuit shown in Figure 1 has power supply (+), (-)
In between, there is a door closing command relay 100, a normally open contact 10a of an operation relay (not shown), and a door closing command relay 100.
The normally open contact 100az is connected in series,
Further, the door closing command relay 100, the normally open contact 10b of the operation relay (not shown), the normally closed contact 102b of the door opening relay 102, and the contact T of the operation timer (not shown) which is closed in response to an elevator operation command are connected in series. connected and the above-mentioned normally closed contact 10
A normally open contact TXa, which closes after a timer TX has counted a predetermined time, is connected in parallel to 2b. In addition, a closing relay 101 is provided between the power supplies (+) and (-),
Normally open contact 100a ₁ of the above-mentioned door closing command relay 100
and a closed-end switch CLS that detects that the door D is completely closed are connected in series, and a normally closed contact 10 of the door-opening relay 102 and the closing-door command relay 100 is connected in series.
_0b1 and an open end switch OLS that detects whether the door D is fully opened are connected in series. moreover,
Connect the timer TX mentioned above between the power supply (+) and power supply (-),
The normally open contact 102a of the door opening relay 102 and the normally open contact Za of the zone detection device Z described above are connected in series.

In addition, the above-mentioned opening relay 102, normally closed contact 1
00b ₁ , normally open contact 102a, normally open contact Za, timer TX, normally open contact TXa, contact T, normally closed contact 10
b, door closing command relay 100, normally open contact 100a ₁ ,
The close door relay 101 constitutes a reversal execution means for reversing the car door D when the car door D is restrained during the opening operation in the region where the zone detection device Z generates an output, and the normally open contact Za According to
A reversal restricting means is configured to disable the reversing operation of the car door D when the car door D is restrained during the opening operation in a region where the zone detection device Z does not generate an output.

The operation of the embodiment configured as described above is as follows.

First, the operation when the car door D is not restricted and normal operation is performed will be described.

When the elevator operation command is issued, the contact T of the operation timer closes, and (+) -100-10b-102b-
The T-(-) circuit is closed and the door closing command relay 1 is closed.
00 is energized and its contact 100az is closed. When the elevator starts running, the contact 10a of the operation relay is closed, which causes (+)-
The circuit 100-10a-100az-(-) is closed, and the door closing command relay 100 is self-held. In addition, the contact 1 is energized by the above-mentioned door closing command relay 100.
00a ₁ is closed, which makes (+)−101−
The circuit 100a ₁ -CLS-(-) is closed and the door closing relay 101 is energized. By energizing the door closing relay 101, the car door D is closed by a control means (not shown). Car door D
When the closed end switch CLS is opened, the closed door relay 101 is demagnetized. When the car is operated in this state and reaches the destination floor, the operation relay (not shown) is demagnetized and its contacts 10a are opened. As a result, the self-holding of the door-closing command relay 100 is released, and the door-closing command relay 100 is demagnetized. Along with this, contact 100b ₁ closes, (+)-102-100b ₁ -OLS-
The (-) circuit is closed, the door opening relay 102 is excited, and the car door D is opened by a control means (not shown). When the car is fully opened and the open end switch OLS is opened, the door open relay 102 is demagnetized. Accordingly, the contact 102b closes. below,
Operations similar to those described above are repeated.

Next, an explanation will be given of the operation when the hook of the locking switch fails near the closed end of the car door D during the opening operation of the car door D, and the car door D is restrained.

As described above, the contact _100b1 is closed, the door opening relay 102 is energized, and the car door D is in a restrained state with the contact 102a closed. At this time, the lever of the zone detection device K is actuated by the cam K, and the contact Za is in a closed state.
Therefore, the circuit (+)-TK-102a-Za-(-) is closed and the timer TX starts counting. Since this state continues while the car door D is restrained and the contact 102a remains closed, the timer TX counts a predetermined time and then closes the contact TXa. Along with this (+)-
The circuit of 100−10b−TXa−T−(−) is closed,
Door closing command relay 100 is energized. This closes the contact 100a ₁ and closes the door relay 1 as described above.
01 is excited, and the car door D performs a reversal operation, that is, a door closing operation. By this door closing operation, the restraint on the car door D is released.

next. A case will be described in which the car door D is restrained at a position sufficiently away from the closed end of the car door D during the opening operation of the car door D, for example, near the approximate center of the fully open area.

At this time, the lever of the zone detection device Z does not engage with the cam K of the car door D, and therefore the zone detection device Z does not operate, so its contact Za is in an open state, and therefore the timer TX is set. Since it is not energized and door closing command relay 100 is also not energized, door closing relay 101 is not energized. Therefore, the car door D does not perform a reversing operation, that is, a closing operation, and the car door D is kept in a restrained state.

In the embodiment configured in this manner, the car door D is moved near the closed end of the car door D, where there is no risk of direct hit to the head or the like during the door opening operation, and where the car door D is within easy reach of the human eye. If the door D is restrained, it is possible to release the restraint condition by performing a reversal operation, that is, a closing operation. If the door D is restrained in a position that is relatively difficult for the eye to see, for example, near the center of the fully open area mentioned above, the reversal operation, that is, the closing operation of the door is regulated, and the restrained state is maintained. As a result, accidents such as direct hits to people's heads due to reversing operations can be prevented, and safety can be ensured.

[Effects of the invention] Since the elevator upper door control device of the present invention is configured as described above, the door can be reversed in order to prevent direct hits to people's heads when restraining the door. can be performed, i.e.,
When the door restrains a person at a position where there is no risk of a direct hit to the head, etc., the door performs a reversal action to release the restraint, and when the door restrains the person at a position where there is no risk of a direct hit to the head, etc. In this case, the reversing operation is disabled, thereby ensuring excellent safety.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the basic configuration of a control device for an elevator top door according to the present invention, and FIG. 2 is a diagram showing the arrangement of a zone detection device provided in this embodiment. 100... Close door command relay, 100a ₁ ... Normally open contact, 100b ₁ ... Normally closed contact, 101... Close door relay, 102... Open door relay, Z... Zone detection device, D... Car door, K ...Cam, Za...normally open contact, TX...timer, TXa...normally open contact, T
...Contact, 10b...Normally closed contact.

Claims (1)

[Scope of utility model registration request] In a control device for an elevator top door that controls the operation of a top door that opens and closes in the vertical direction, a zone detection device that detects the vicinity of the closed end of the door;
reversal execution means for reversing the top door when the top door is restrained during opening operation in an area where the zone detection device generates an output; A control device for a top door of an elevator, comprising a reversal restricting means that disables the top door from reversing when the door is restrained during an opening operation.