JPH0881168A - Foreign matter catch detecting device in multi-speed type sliding door - Google Patents

Abstract

PURPOSE: To provide the foreign matter catch detecting device of a sliding door for an elevator having the structure of a door main body same as that of the door provided with no foreign matter catch detecting device. CONSTITUTION: A foreign matter catch detecting device is provided with a moving piece 14 so arranged as to cover the front edge of a door 12, and so provided as to be freely advanced and retreated between the advancing position and the retreating position in the relative moving direction of the door in relation to the front edge, an elastic member 18 provided between the moving piece 14 and the front edge, for energizing the moving piece into the advancing position, and a detector 15 provided on the door 12, and to make action when the moving piece is displaced in its retreating position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter trapping detecting device for detecting foreign matter trapped between doors used in an elevator multi-speed sliding door.

[0002]

2. Description of the Related Art FIG.
FIG. 6 is a partial cross-sectional view showing a conventional foreign matter pinch detection device for an elevator sliding door according to the No. In the figure, the first car 1
There is a second door 2 arranged in parallel in front of the car first door 1, and is attached by a hinge 3 over substantially the entire longitudinal direction of the end of the second door 2 on the first door 1 side. A movable door 4 and a switch 5 which is a detector mounted inside the second door 2 and whose contactor is in contact with the movable door 4; There is a gap 7 between the second basket door 2 and the hand 6 sandwiched in the gap 7.

In such a conventional foreign matter trapping detection device for an elevator door, when the hand 6 is caught in the gap 7, the hand 6
Thereby, the movable piece 4 is pushed into the second door 2. The movable piece 4 pushed in pushes the switch 5 to detect the entrapment of foreign matter. When the entrapment of a foreign object is detected, the closing operation of the first door 1 and the second door 2 is controlled, and the sandwiched hand is secured safely.

[0004]

In the conventional foreign matter trapping detection device for a sliding door for an elevator as described above, a part of the structure of the door body is a movable piece. The structure of the door and the main body of the door which did not add the detection device had to be different.
Therefore, in the process of manufacturing the sliding door for elevator, two types of doors have to be manufactured: a door without the foreign matter trapping detection device and a door with the foreign matter trapping detection device, which is inefficient. Further, it has been almost impossible to provide a foreign matter trapping detection device in an existing elevator sliding door.

The present invention has been made to solve the above-mentioned problems, and provides a foreign matter trapping detection device for an elevator sliding door having the same door body structure as the one without the foreign matter trapping detection device. It is an object.

[0006]

According to another aspect of the present invention, there is provided a foreign matter entrapment detection device which is arranged so as to cover a front edge of a door and which is located between an advancing position and a retreating position in the relative movement direction of the door with respect to the front edge. A movable piece that can be moved forward and backward, an elastic member that is provided between the movable piece and the front edge to urge the movable piece to the forward position, and a movable piece that is provided on the door and is displaced to the retracted position. And a detector that operates.

In the foreign matter entrapment detection device of the second aspect, the movable piece is provided over substantially the entire length of the front edge.

In the foreign matter trapping detection device of the third aspect, the elastic member is a rubber bush.

[0009]

According to the foreign matter trapping detection device of the first aspect,
Since the movable piece of the foreign matter trapping detection device has a structure that covers the side portion of the door, the structure of the door body can be the same as that without the detection device.

In the foreign matter trapping detection device of the second aspect, the movable piece of the detector covers substantially the entire length of the front edge of the door.

In the foreign matter trapping detection device of the second aspect, the rubber bush between the movable piece and the front edge of the door is elastically deformed according to the pressure, and the movable piece can move.

[0012]

【Example】

Example 1. 1 and 2 show an embodiment of a foreign matter trapping detection device for an elevator sliding door according to the present invention. FIG. 1 is a front view of a car door as seen from the inside of the car, and FIG. 2 is a partial cross-sectional view of an elevator sliding door provided with the foreign matter trapping detection device of the present invention. In FIG. 1, a first door 11 that is a sliding door that closes the substantially left half of the car doorway and a second door 12 that is arranged in parallel in front of the first door 11 that is a sliding door that closes the substantially right half of the car doorway are shown. Yes, there is a gap 17 between the first door 11 and the second door 12, when the car door is open, the first door 1
1 slides to the right in the figure, but at this time, the second door 12 slides to the right at about half the speed of the first door 11,
1 is an operation to slide into the back side of the second door 12. Due to this operation, there is a risk that the hand 6 is caught in the gap 17.

The first door 11 slides in on the back side of the second door 12, but when the second door 12 is viewed relatively from the first door 11, the second door 12 slides out in front of the first door 11. Will come.
There is a risk that the hand 6 is caught at the front edge 12a of the second door 12 which is located in front of the first door 11 in the relative movement direction of the second door 12. That is, in a plurality of doors that move and open and close at different speeds, there is a risk that the front edge of the door in front of the relative movement direction of the door may get caught.

In FIG. 2, a movable piece 14 is installed in the second door 12 so as to cover the front edge 12a of the second door 12 over substantially the entire length of the front edge 12a. Reference numeral 14 is made of a steel plate and has a substantially rectangular tubular shape with one corner missing, and is sandwiched by two inner surfaces so as to wrap around the front edge 12a of the second door 12, and is attached so as to be able to move forward and backward.

The inner back surface of the movable piece 14 and the front edge 12 of the second door.
Long rectangular parallelepiped rubber bush 18 adhered on both sides between c
Is provided. A switch 15 installed inside the second door is provided so as to engage with the back side surface of the movable piece 14. Further, the figure shows the hand 6 sandwiched in the gap 17.

In the foreign matter entrapment detection device thus constructed, when the hand 6 is caught in the gap 17, the movable piece 14 normally located at the forward movement position 14a is moved to the backward movement position 14 by the hand 6.
Pressed by b. The pushed movable piece 14 pushes the switch 15 to detect the entrapment of the foreign matter. When the entrapment of a foreign object is detected, the closing operation of the first door 11 and the second door 12 is stopped, and the opening operation is performed in the opposite direction, and the pinched hand is safely secured.

In the present embodiment, the case of a two-door unit is shown, but three units are used.
The present invention can be implemented in a single-door or more doorway device. Further, in the present embodiment, the case of the elevator car entrance / exit device is shown, but the invention can be similarly applied to the hall entrance / exit device.

[0018]

According to the foreign matter trapping detection apparatus of the first aspect, the foreign matter trapping detection apparatus can be easily added to the door of an existing elevator by inserting a movable piece into the end of the door. Further, since the structure of the door body is the same in the door manufacturing process with and without the foreign matter pinch detection device, the manufacturing cost can be reduced.

In the foreign matter entrapment detection device of the second aspect, since the movable piece covers substantially the entire length of the front edge of the door, the movable piece is inconspicuous and does not impair the commercial value of the design.

In the foreign matter entrapment detection device of the third aspect, since the rubber bush is used as the elastic member, the structure is simple and it can be easily used in the existing sliding door.

[Brief description of drawings]

FIG. 1 is a front view of a car door as viewed from inside the car.

FIG. 2 is a partial cross-sectional view of an elevator sliding door provided with the foreign matter trapping detection device of the present invention.

FIG. 3 is a partial cross-sectional view showing a conventional foreign matter entrapment detection device for an elevator sliding door.

[Explanation of symbols]

11 car 1st door, 12 car 2nd door, 14 movable pieces,
15 switch (detector), 18 rubber bush (elastic member).

Claims (3)

[Claims] 1. A multi-speed type elevator comprising a plurality of doors that move at different speeds to open and close, and each door has a front edge in front of the relative movement between the doors when viewed in the relative movement direction. A foreign matter trapping detector used for a sliding door to detect that a foreign matter is trapped between the doors at the front edge when the door is opened and closed, and is arranged so as to cover the front edge of the door, On the other hand, with respect to the relative movement direction of the door, a movable piece provided so as to be able to advance and retreat between an advance position and a retracted position, and the movable piece provided between the movable piece and the front edge to the advance position. A foreign matter trapping detection device in a multi-speed sliding door, comprising: an elastic member for biasing; and a detector provided on the door and operated when the movable piece is displaced to the retracted position. 2. The foreign matter trapping detection device in a multi-speed sliding door according to claim 1, wherein the movable piece is provided over substantially the entire length of the front edge. 3. The foreign matter trapping detection device in a multi-speed sliding door according to claim 1, wherein the elastic member is a rubber bush.