JPH0977439A - Door safety device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator door safety device capable of detecting a passenger, even if the passenger slowly goes on board a car when a door is starting to close. SOLUTION: This safety device is equipped with a door opened and closed with a door operator 12 installed in an elevator hall side, a cover member 5 fitting to the close direction end of the door 3 so as to be capable of moving, a torsion coil spring 9 for energizing and holding the cover member 5 at the prescribed position, a limit switch 10 for detecting the travel of the cover member 5 from the prescribed position under a pushing force, and a control panel 10 for outputting a signal to the door operator 12 for reversing the door 3 in a closing operation mode, upon receipt of a signal from the limit switch 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door safety device installed at an entrance of an elevator.

[0002]

2. Description of the Related Art A conventional elevator door safety device is shown in FIG. In the figure, reference numeral 101 denotes an entrance / exit on the hall side, and this entrance / exit 1
In 01, double doors 102 and 103 are provided. The entrance 101 on the side of the hall faces the entrance 101 on the side of the car, and the entrance 104 has a double door 1
05 and 106 are provided.

Safety shoes 108 and 109 are attached to the car-side doors 105 and 106 for reversing the doors 105, 106, 102 and 103 when coming into contact with passengers. Further, a light emitting element 110 and a light receiving element 111 as photoelectric detectors are attached to the safety shoes 108 and 109, and when the photoelectric detectors also detect passengers, the doors 102, 103, 105 and 106 are inverted. It is a thing.

Here, the safety shoes 108 and 109 as safety devices and the photoelectric detectors 110 and 111 are provided on the door side rather than the landing side in terms of cost.

By the way, when the car arrives at the landing, the doors 105 and 106 on the car side and the doors 102 and 103 on the landing side.
When the doors 105 and 106 on the car side are opened and closed by engaging through an engaging member (not shown), the doors 102 and 103 on the landing side are also opened and closed in conjunction with each other.

[0006]

However, in such a conventional elevator door safety device, since the photoelectric detectors 110 and 111 are provided on the car side rather than on the landing side, Doors 102, 103 on the hall side
Is a little far from. Then, the door 10
If passengers (for example, children or elderly passengers) board the car slowly while 2, 103, 105, 106 are closing, doors on the hall side are detected before being detected by the photoelectric detectors 110, 111. There is a risk that 102 and 103 may come into contact with passengers, which is dangerous.

It is an object of the present invention to provide a door safety device for an elevator which is capable of detecting a passenger even if the passenger slowly gets into the car while the door is closing.

[0008]

In order to achieve such an object, according to the present invention, a door disposed on the landing side and opened and closed by a door operator, and a door in the closing direction of the door can be moved. A cover member attached to the cover member, an urging member for urging the cover member to hold it at a predetermined position, a detector for detecting that the cover member has been pushed and moved from the predetermined position, and this detector And a control means for outputting a signal for reversing the door being closed to the door operator.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of an elevator door safety device according to the present invention.

In FIGS. 3 and 4, reference numeral 1 is an elevator hall, and the hall 1 has doors 2 on the hall side.
3 is arranged to be openable and closable, and a car-side door (not shown) is located on the opposite side of the doors 2 and 3. The doors 2 and 3 on the hall side open and close in conjunction with the door on the car side. Further, synthetic resin cover members 4 and 5 are detachably attached to the front ends of the doors 2 and 3 on the hall side in the closing direction.

As shown in FIGS. 1 and 2, the cover member 5 has a substantially U-shaped cross section, and the inner wall at the end of the cover member 5 has a pair of oval engagement holes 6 formed therein. , 7
Are formed. An engagement pin 8 horizontally attached to the tip of the door 3 engages with the engagement holes 6 and 7, whereby the cover member 5 is supported by the door 3. Since the oval engagement holes 6 and 7 are formed in the horizontal direction, the cover member 5 is movable in the same direction with respect to the door 3.

A torsion coil spring 9 (biasing member) is attached to the front end of the door 3 via a support pin 13, and both foot portions 9a and 9b of the torsion coil spring 9 are brought into contact with the cover member 5. ing. The torsion coil spring 9 biases the cover member 5 leftward in FIG. 1 to hold it at a predetermined position. When the cover member 5 is pushed rightward in FIG. 1 against the biasing force of the torsion coil spring 9, it moves in the same direction.

A limit switch 10 (detector) is provided at the tip of the door 3, and the limit switch 10 detects the movement of the cover member 5. The detection signal of the limit switch 10 is the control panel 11 provided in the machine room.
Then, the control panel 11 outputs a signal to the door operator 12 provided in the car. The door operator 12 is provided in the car and opens and closes the doors 2 and 3 on the landing side together with the door on the car side. The cover member 4 has the same structure.

When the hall button is pressed to call the car at the hall, the door operator 12 opens the car side door and the hall side doors 2 and 3. If the passenger tries to get into the car slowly while the doors 2 and 3 are closing, the doors 2 and 3 on the hall side contact the passenger.

Since the cover members 4 and 5 are attached to the tips of the doors 2 and 3 on the landing side, the cover members 4 and 5 are pushed against the urging force of the torsion coil spring 9,
The limit switch 10 detects a passenger through the cover members 4 and 5. A detection signal is output from the limit switch 10 to the control panel 11, and the control panel 11 outputs the door operator 1
The inverted signal is output to 2. The door operator 12 opens (reverses) the doors 2 and 3 on the hall side along with the door on the car side from the middle. For this reason, the doors 2 and 3 on the hall side do not directly contact the passengers.

A proximity switch is provided at the tip of each of the doors 2 and 3 to detect whether the passenger's hand, clothes, etc. are caught between the fully closed doors 2 and 3 to check the safety. You may

By the way, there is a case where luggage is carried by an elevator, and at this time, the luggage may be hit against the tips of the doors 2 and 3 on the hall side. Then, the tips of the doors 2 and 3 will be scratched and the appearance will be poor.

However, since the cover members 4 and 5 made of synthetic resin are attached to the tips of the doors 2 and 3, the cover members 4 and 5 are easily elastically deformed when a load is hit. Therefore, the cover members 4 and 5 are less likely to be scratched. Even if the cover members 4 and 5 are scratched, they can be replaced with new ones immediately because the cover members 4 and 5 are detachably attached to the doors 2 and 3. Therefore, the front ends of the doors 2 and 3 do not look bad.

[0019]

As described above, according to the present invention,
For the passengers who are trying to get into the car, the cover member comes into contact before the closed door comes into contact with the passenger, and the door is immediately inverted so that the door does not come into direct contact with the passenger. The safety of is improved. Further, since the cover member is attached to the front end of the door, the front end side of the door does not look bad.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an elevator door safety device according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a perspective view of a landing.

FIG. 4 is a plan view of a landing.

FIG. 5 is a plan view of a conventional hall.

[Explanation of symbols]

 2, 3 ... Doors 4, 5 ... Cover member 9 ... Torsion coil spring 10 ... Limit switch 11 ... Control panel 12 ... Door operator

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takashi Tsuruoka 2700-1 Mizuguchi, Koike, Shibayama-cho, Sanmu-gun, Chiba Japan Otis Elevator Co., Ltd. Shibayama Factory

Claims (2)

[Claims] 1. A door disposed on a landing side and opened and closed by a door operator, a cover member movably attached to a front end of the door in a closing direction, and a biasing force of the cover member to hold the cover member at a predetermined position. A biasing member, a detector for detecting that the cover member is pushed and moved from a predetermined position, and a signal for reversing the door being closed when a signal from this detector is input, is output to the door operator. An elevator door safety device, characterized by comprising: 2. The elevator door safety device according to claim 1, wherein the cover member is made of synthetic resin.