JPH10250961A - Safety device for elevator entrance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device for preventing accidents of passenger's hands caught in a landing door which can be installed to an existing elevator without requiring modification of the elevator, or without depending on door types. SOLUTION: In this device, installation metals 12 are fixed to post angles 11 at both ends of a landing threshold 14, and a projector 5a and a light receiver 5b to detect an obstacle are installed on the installation metals 12 to face each other. The projector 5a and the light receiver 5b are disposed in such a way that light 6 emitted from the projector 5a penetrates a gap 15 between a threshold 13 of a car and the landing threshold 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an elevator entrance provided at an elevator entrance having a car door and a landing door for detecting an obstacle located at the entrance.

[0002]

2. Description of the Related Art FIG. 2 is a front view of a conventional car door provided with a safety device for an elevator doorway of this type as viewed from the landing side, and FIG. 3 is a sectional view taken along line AA of the safety device of FIG. It is a cross-sectional view along.

As a safety device for an elevator doorway of this type, for example, a device described in Japanese Patent Application No. 7-7307 has been proposed.

A pair of car doors 3 and a pair of landing doors 4 are provided at the elevator entrance shown in FIGS. 2 and 3, and the pair of landing doors 4 are also opened and closed in conjunction with the opening and closing operation of the pair of car doors 3. It has become.

As shown in FIG. 2, the conventional safety device includes a light emitter 5a and a light receiver 5b which are arranged to face each other, and the light emitter 5a is provided at the tip of one of the car doors 3 and the other. The light 6 is emitted toward the car door 3, and the light receiver 5 b is provided at the tip of the other car door 3 to receive the light 6. These floodlights 5
a and the light receiver 5b are interposed between the car door 3 and the landing door 4, respectively, as shown in FIG.

Further, on the back side of the car door 3, there is provided an operating body 7 which projects from the tip of the car door 3 and can be retracted, and a lever 8 which is interlocked with the operating body 7 and is rotatably attached to the car door 3. And a switch 9 for detecting a rotation operation of the lever 8 and outputting a restart door signal for opening the car door 3. The lever 8 is bent in a crank shape,
A gap is formed between the rear surface of the car door 3 and the operating body 7 so as to interpose the light projector 5a.

In this conventional safety device, when an obstacle is interposed between the open ends of the pair of car doors 3, the obstacle blocks the light 6 from the light emitter 5a and the light receiver 5b receives the light 6. Therefore, a restart door signal for opening the car door 3 upon detecting the obstacle is output.

Further, when the pair of car doors 3 closes and an obstacle interposed between the front ends of the car doors 3 strikes the operating body 7, the operating body 7 retreats, and the lever 8 rotates. When the switch 9 is operated, a restart door signal for opening the car door 3 is output.

[0009]

However, in the above-described safety device for the entrance of the elevator, when mounting on an existing elevator, a light projector 5a is interposed between the back surface of the car door 3 and the operating body 7, Lever 8 linked to the operating body 7
Had to be replaced with a crank-shaped one.

Further, in the above-described safety device for the entrance of the elevator, when the passenger's hand 10 is inserted between the pair of landing doors 4 from the landing 2 side, the operating body 7 does not hit the passenger's hand 10 and Since the light 6 does not reach the optical path through which the light 6 passes, the light 6 from the light projector 5a is not blocked, and the passenger's hand 10 cannot be detected. Therefore, there is a concern that the passenger's hand 10 may be caught between the pair of landing doors 4.

The present invention has been made in view of such a situation in the prior art, and has as its object the purpose of modifying an existing elevator to install the safety device.
It is an object of the present invention to provide a safety device for an elevator entrance which does not require modification of an existing car door, an operating body, a lever, and the like, and can prevent an accident in which a passenger's hand or the like is caught by a pair of landing doors.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a car for raising and lowering in a hoistway, a car door provided in the car, and opening and closing of the car door. A safety device for an elevator doorway provided with an elevator door having an interlocking opening / closing door and an emitter and a light receiver for detecting an obstacle located at the doorway, wherein the hall door and the car are provided in the hoistway. The light projector and the light receiver are arranged at a position between the doors and at a position where a light beam for detecting an obstacle passes through a gap between the car and the landing.

In the present invention configured as described above, an existing car door, an operating body, a lever interlocking with the operating body, etc. are not remodeled or replaced, and an infrared detecting device is provided for an existing elevator. Can be installed.

Further, if the passenger's hand or the like is inserted between the pair of landing doors when the open car door and the landing door are closed, the light from the floodlight is blocked by the passenger's hand or the like. , And outputs a restart door signal for reopening the car door and the landing door. This can prevent an accident in which a passenger's hand or the like is caught between the pair of landing doors.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a safety device for an elevator doorway according to the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing a safety device for an elevator entrance according to an embodiment of the present invention. Here, FIG.
In FIG. 2, the same components as those shown in FIGS. 2 and 3 are denoted by the same reference numerals.

In FIG. 1, post angles 11 are fixed to both ends of a landing sill 14 installed at the entrance of the landing 2. The mounting bracket 12 is mounted on the post angle 11, and the projector 5a and the light receiver 5b for detecting an obstacle are mounted on the mounting bracket 12 so as to face each other.

In general, a gap 15 of about 30 mm is formed between a threshold 13 provided on a car 1 which rises and lowers in a hoistway and a hall threshold 14 provided on each hall 2. .

In the present embodiment, the light projector 5a and the light receiver 5b are arranged so that the light 6 emitted from the light projector 5a passes through the gap 15.

In the embodiment configured as described above, the existing car door 3, the operating body 7, and the lever 8 linked to the operating body 7 are used.
The safety device can be attached to an existing elevator without modification or replacement of the above.

If the passenger's hand or the like is inserted between the pair of landing doors 4 when the opened car door 3 and the landing door 4 are closed, the light 6 from the floodlight 5a is applied by the passenger's hand or the like. Since the vehicle is blocked, a hand signal of the passenger is detected and a restart door signal for re-opening the car door 3 and the landing door 4 is output. Therefore, an accident in which the passenger's hand is caught by the landing door 4 can be prevented. .

Further, although the present embodiment has shown the case of the elevator with the center door, the elevator with the single door which requires replacement of the car pillar in the conventional technology, and the mounting in the conventional technology is not required. It can be easily attached to elevators with upper and lower doors, which has been difficult.

In this embodiment, the case where the mounting bracket 12 is attached to the post angle 11 is exemplified.
The present invention is not limited to this, and in an elevator having no post angle 11, the elevator may be directly attached to a building wall with an anchor bolt or the like.

[0024]

As described above, the present invention is constructed as described above, so that the safety device can be attached to an existing elevator without any modification or replacement, and the passenger's hand or the like is sandwiched by the landing door. Accidents can be prevented,
Therefore, there is an effect that the safety of the passenger at the entrance of the elevator can be improved.

Further, since there is no influence on the type of the door, there is an effect that the infrared detecting device can be attached to all elevators.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a safety device for an elevator entrance according to an embodiment of the present invention.

FIG. 2 is a front view of a conventional car door provided with a safety device for an elevator entrance, as viewed from a landing side.

FIG. 3 is a cross-sectional view of the safety device of FIG. 2 and a peripheral portion thereof taken along line AA.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding car 3 Car door 4 Landing door 5a Emitter 5b Receiver 7 Operating body 12 Mounting bracket

Claims (1)

[Claims] 1. An elevator having an elevator car having a car that moves up and down in a hoistway, a car door provided on the car, and a landing door that opens and closes in conjunction with the opening and closing of the car door. In an elevator entrance and exit safety device provided with a light emitter and a light receiver to detect an obstacle located in, in the hoistway, between the landing door and the car door,
An elevator entrance / exit safety device, wherein the light emitter and the light receiver are arranged at a position where a light beam for detecting an obstacle passes through a gap between the car and the landing.