JPH11263564A - Safety device of elevator entrance part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the safety device of an elevator entrance part to which an optical system safety device having a light projecting part and a light receiving part can be easily fitted. SOLUTION: An operating piece fitted to an existing lever 11 is detached, a thin type collar 13 is arranged on the car door side of the free end of the lever 11, a thick type collar 14 is arranged on the landing door side, the operation piece is fitted to the lever through the thin type collar 13 and the thick type collar 14, and the operating piece is deviated on the landing door 2 side by the portion of a light system safety device having a light projecting part and a light receiving part 4 to be fitted to car doors 1.

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 doorway.

[0002]

2. Description of the Related Art As a conventional safety device for an elevator doorway, for example, a safety device described in Japanese Patent Application Laid-Open No. 8-208162 is known, and is shown in FIGS. FIG. 3 is a front view of a car door provided with a safety device at an entrance of an elevator, and FIG. 4 is a cross-sectional view taken along line BB of FIG. The entrance / exit portion of the elevator is configured such that when the car door 1 is opened / closed by a driving device (not shown), the landing door 2 shown in FIG. As a safety device for an entrance / exit portion of an elevator, an operation piece 6 having a vertically long structure connected to the other end of a lever 5 rotatably supported at a fulcrum 7 on one car door 1 is provided.
, And an optical safety device having a light projecting unit 3 and a light receiving unit 4 respectively provided at opposing portions of the pair of car doors 1. The light emitting unit 3 is configured by arranging a plurality of light emitters 3b for irradiating the beam 3a when the car door 1 is open, at predetermined intervals in a vertical direction,
The light receiving section 4 includes a plurality of light receiving bodies 4a which are arranged to face the light emitting bodies 3b and detect light blocking of the irradiated beam 3a when the car door 1 is open.
Such a safety device at the doorway of the elevator opens and closes the car door 1 and the landing door 2 when the operating piece 6 of the car door 1 is closing and the lever 5 is rotated by the passenger. In addition, when the car door 1 is open, at least one of the plurality of beams 3a emitted from the light projecting unit 3 is shielded from light by a passenger or the like. 4a, the car door 1 and the landing door 2 that are being closed are driven to open.

[0003]

However, the conventional safety device at the entrance and exit of an elevator is provided with a new safety device having a light projecting portion 3 and a light receiving portion 4 newly attached to an elevator having an operating piece type safety device. In order to prevent collision due to the addition of the light receiving section 4, as shown in FIG. 4, the lever 5 is changed from an existing flat plate to a new one having a stepped portion 5a, and the operating piece 6 is put on the landing. It was necessary to be eccentric to the side. This replacement work is performed on the fulcrum 7 of the lever 5.
Since it is mounted with precise dimensions using a bearing (not shown) to rotatably support it, it took a lot of time to remove and install it. FIG.
When an optical safety device having a light projecting section 3 and a light receiving section 4 is newly attached to an existing elevator having only an operating piece type safety apparatus as shown in (1), the existing lever is removed and the lever 5 having a stepped portion 5a is removed. When the operating piece 8 is attached to the lever 5 and the operating piece 8 is thick as shown in the figure, the operating piece 8 projects from the car sill end face 9 and the gap with the landing sill end face 10 becomes narrow. In addition, there is a risk that the operating piece 8 may come into contact with the landing sill end face 10 while the car is running.
For this reason, the stepped portion 5 depends on the thickness of the operating piece 8 to be used.
It is necessary to change the step size of "a", which is a troublesome replacement.

An object of the present invention is to provide a safety device for an elevator entrance which allows easy attachment of an optical safety device having a light projecting portion and a light receiving portion.

[0005]

In order to achieve the above object, the present invention comprises a car door provided on a car, and a landing door which is opened and closed in conjunction with the car door. An operation piece attached to a free end of a rotatable lever is provided on one of the opposite sides of the landing door, and a light projecting unit and a light receiving unit are provided on the landing door side of the car door, respectively. At the time and when the beam from the light emitting unit is shielded, in the safety device of the elevator entrance which opens the car door, the lever is configured in a flat plate shape, and the operating piece is positioned with respect to the operating plane of the lever. And is arranged so as to be shifted toward the landing door side.

In the safety device for an elevator doorway according to the present invention, the operating piece attached to the free end of the rotatable lever is biased toward the landing door as described above. The optical safety device can be easily mounted by shifting the position of the operating piece to the landing door side without changing to a new lever having a stepped portion.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of an elevator doorway employing an elevator doorway safety device according to an embodiment of the present invention. On the car side, a pair of car doors 1 are arranged so as to be openable and closable, and on the hall side, a pair of hall doors 2 which are opened and closed in conjunction with these car doors 1 are arranged oppositely. As an optical safety device, a light projecting unit 3 and a light receiving unit 4 are attached to the opposite side of the car door 1 facing the hall door 2 side, and the light projecting unit 3 and the light receiving unit 4 extend in the vertical direction. For example, the long structure has a length of 2,000 mm, a width of 37 mm, and a thickness of 9 mm. For example, forty light emitters 3 b and 40 light emitters 3 b, 4 b provided inside are provided at intervals of 45 mm vertically. Of light receiving members 4a are disposed. In this optical safety device, as shown in the front view of the landing shown in FIG. 2, at least one of the plurality of beams 3a emitted from the light emitter 3b of the light projecting unit 3 is shielded by a passenger's hand or the like. When the light-receiving body 4a of the light-receiving unit 4 detects that the car door 1 and the landing door 2 are closed, the car door 1 and the landing door 2 are driven to open or hold the open state.

As a mechanical safety device, one of the car doors 1 has an end portion of a lever 11 rotatably supported by a fulcrum 7 on a landing door 2 side, and a vertical direction projecting toward the other car door 1 side. Is provided with a switch (not shown) at a position retracted by a predetermined distance from the operating piece 12, and when the switch (not shown) is operated via the operating piece 12, the switch is closed. Car door 1
, And the open state of the open car door 1 is continued. The lever 11 has the same thin flat plate shape as an existing component that does not have the stepped portion 5a bent toward the landing door 2 as in the related art. Further, the operating piece 12 connected to the free end is connected to the operating piece 12 via the thick collar 14 at the end of the operating piece 12 at the landing door 2 side. The vehicle door 1 is disposed so as to be offset toward the landing door 2, thereby obtaining a space for mounting the light emitting unit 3 and the light receiving unit 4 on the landing door 2 side of the car door 1.

Next, an optical safety device having a light projecting portion 3 and a light receiving portion 4 is newly provided at an existing elevator entrance and exit portion provided only with a mechanical safety device in which an operating piece is attached to the lever 11 shown in FIG. A description will be given of an operation for attaching to a vehicle. First, after the existing operating piece and the collar inside the operating piece are removed, the light emitting section 3 is provided on the surface of the car door 1 on the landing door 2 side.
Then, a drill hole is formed in accordance with a mounting hole formed in the light receiving section 4 in advance. Next, the light projecting unit 3 and the light receiving unit 4 are mounted by using these mounting holes, and necessary wiring is provided to at least one of the plurality of beams 3a emitted from the light emitting body 3b of the light projecting unit 3. When the photoreceptor 4a of the light receiving section 4 detects that one of the cars is shielded from light by a passenger's hand or the like, the car door 1 and the landing door 2 that are being closed are driven to open or are kept open. I do.

Next, as shown in FIG. 1, a thin collar 13 is arranged on the car door 1 side at the free end of the lever 11, and a thick collar 14 is arranged on the landing door 2 side at the free end of the lever 11. The operating piece 12 is attached via the collars 13 and 14. The design of the landing doorway can be improved by baking the surface of the operating piece 12 according to the color of the existing operating piece or by applying the same color as the car door 1. here,
The removed existing operating piece is, for example, 2000 mm long,
A long body having a width of 60 mm and a thickness of 40 mm, the existing collar is, for example, a cylindrical body having an outer diameter of 12 mm, an inner diameter of 8 mm, and a thickness of 12 mm, whereas the newly-installed operating piece 12 has, for example, a length of 2,000 mm and a width of 2,000 mm. It is a long body having a thickness of 60 mm and a thickness of 26 mm. The thin collar 13 has, for example, an outer diameter of 12 mm and an inner diameter of 8 m.
m, 4 mm thick cylinder, and thick collar 14
For example, it is a cylindrical body having an outer diameter of 12 mm, an inner diameter of 8 mm, and a thickness of 10 mm.

As described above, using the two types of collars having different thicknesses, the thin collar 13 is arranged on the car door 1 side at the free end of the lever 11 and the thick collar 13 is placed on the landing door 2 side at the free end of the lever 11. Since the collar 14 is arranged and the thin operating piece 12 is attached via the collars 13 and 14, the lever 5 is not formed with the stepped portion 5 a bent toward the landing door 2 like the conventional lever 5. Since the operation plane of the operation piece 12 can be shifted to the landing door 2 side with respect to the operation plane of 11, the space for mounting the light projecting unit 3 and the light receiving unit 4 on the landing door 2 side of the car door 1 can be easily formed. Can be formed.

As the lever 11, the conventional lever 5 is used.
As described above, a thin flat plate before remodeling which does not have the stepped portion 5a bent toward the landing door 2 can be diverted, so that there is no need to perform a conventional lever replacement operation. Therefore, it is not necessary to remove the bearing or the like of the rotating part by simply removing the operating piece 12 attached to the free end of the existing lever 11, and the operation can be simplified. In the case of an elevator in which the distance from the car door 1 to the car sill end face 9 is large, a thin collar 13 is used on the car door 1 side, and a thick collar 14 is used on the landing door 2 side, and an existing operating piece is attached. However, since the existing operating piece may not project from the car sill end face 9,
In such a case, the existing operating piece can be diverted.

In the embodiment described above, in order to shift the operating plane of the operating piece 12 toward the landing door 2 with respect to the operating plane of the lever 11, a thin collar 13 is provided on the car door 1 side at the free end of the lever 11. And a thick collar 14 is arranged on the landing door 2 side, and these collars 13 and
Although the thin operating piece 12 is attached via 14, the operating piece 12 may be deviated by another configuration or component. In the above-described embodiment, the operating piece 12 is provided on the landing door 2 side of the car door 1, but may be provided on the landing door 2 side of the landing door 2. However, car door 1
When the operation piece 12 is provided on the side, the structure can be simple because it can be used in common for the landing doors 2 on each floor.

[0014]

As described above, the safety device for the elevator entrance according to the present invention has the operating piece deviated to the landing door side attached to the free end of the rotatable lever, so that the position of the operating piece can be easily adjusted. It is possible to easily form a space for attaching the light emitting unit and the light receiving unit to the landing door side of the car door by shifting to the landing door side.

[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 landing employing the safety device for an elevator entrance shown in FIG. 1;

FIG. 3 is a front view of a landing employing a conventional safety device for an elevator entrance.

FIG. 4 is a cross-sectional view showing a safety device for an elevator entrance shown in FIG. 3;

FIG. 5 is a cross-sectional view showing another conventional safety device for an elevator entrance.

[Explanation of symbols]

 Reference Signs List 1 car door 2 landing door 3 light emitting part 4 light receiving part 11 lever 12 operating piece 13 thin color 14 thick color

Claims (2)

[Claims] 1. A car door provided on a car, and a hall door which is opened and closed in conjunction with the car door, wherein a rotatable lever is provided on one side of the car door and the hall door. Providing an operating piece attached to the free end of the car door, providing a light emitting unit and a light receiving unit on the landing door side of the car door, respectively, at the time of operation of the operating piece and when the beam from the light emitting unit is shielded, In the safety device for an elevator door opening part for opening the car door, the lever is formed in a flat plate shape, and the operating piece is disposed so as to be deviated toward the landing door side with respect to an operating plane of the lever. Safety device at the entrance and exit of the elevator. 2. The operating piece according to claim 1, wherein the collar having a small thickness is disposed on the car door side at the free end of the lever, and the collar having a large thickness is disposed on the landing door side. A safety device at the entrance of the elevator, characterized by being attached.