JPH0859152A - Elevator hall door unlocking device - Google Patents

Abstract

(57) [Summary] [Purpose] There is a keyhole for unlocking the elevator door. In observation elevators, outside light may leak from this keyhole to the hall. It is an object of the present invention to eliminate this light. [Structure] A lid that opens and closes with a key inserted in the back side of the keyhole is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unlocking device for a door lock switch in an elevator hall.

[0002]

2. Description of the Related Art Doors for elevators, which are doorways of elevators,
The mechanism that locks the landing door and the doors on the landing door are closed to prevent problems such as people opening the door from the landing and accidentally falling into the hoistway or being caught in the gap between the car and the landing. In order to allow the elevator to operate only when the elevator is operating, a door switch is to be installed so that the elevator operating circuit closes when the landing door closes (Building Standard Act. However, and those that are combined together by interlocking these are generally used, called a lock switch).

[0003] In addition, when the elevator doors are regularly maintained and inspected or the passengers are rescued in an emergency, the maintenance staff can lock the doors from the hall side with a dedicated key (unlock key). ) Is provided with an unlocking device.

A conventional door unlocking device for an elevator hall will be described with reference to FIGS.

The landing door 1 is adapted to be opened and closed by being suspended from a hanger rail 5 installed in a header case 4 via a guide roller 3 attached to a door hanger 2 provided above the landing door 1. A switch box 6 is attached to the header case 4.

The interlock lever 7 of the mechanical interlock is attached to the upper part of the landing door 1, and at the same time when the landing door 1 is closed, it rotates in the locking direction around the fulcrum 8, and the latch portion 9 stops the switch box. The fitting 10 is fitted and locked, and at the same time, a door closing confirmation switch (contact point) 11 of an electrical interlock is turned on to close the operation circuit of the elevator.

An unlock lever 12 is attached to the end of the interlock lever 7.

A hole is made in the upper part of the door 1 of the hall, the key cylinder 13 is inserted into the hole from the front side, and the key hole 15 is provided by fixing the key cylinder 13 from the bottom side (rear side of the door) with a stopper / lock washer 14. (See FIG. 9).

By inserting a dedicated key (unlock key) 16 (see FIG. 10) into the key hole 15 of the key cylinder from the surface of the door 1 and rotating it, the interlock lever 7 rotates together with the unlock lever 12, and the latch portion 9 Is disengaged from the stopper 10 of the switch box, and the door 1 at the landing can be opened. With this structure, the door of the elevator hall is locked and unlocked.

[0010]

By the way, in the case of an elevator for a view, the hoistway wall is made of a transparent structure such as glass so that passengers in the car can see the outside scenery. Outside light will be poured into the hoistway.
For this reason, when Seiyo pours, light may leak from the keyhole 15 of the key cylinder to the hall side, which is unfavorable in terms of design.

The present invention is intended to solve the above problems, and it is an object of the present invention to prevent light from leaking through the keyhole 15 of the key cylinder of a landing door during normal elevator operation.

[0012]

[Means for Solving the Problem] An interlock lever of a lock switch attached to a door of an elevator hall is provided with a bar-shaped exclusive key (an unlock key) in a keyhole provided in the door of the hall during maintenance and inspection of the elevator or in an emergency. A lock key) is inserted and the interlock lever is rotated to unlock the door. At the bottom of the key hole of the door unlocking device at the elevator hall, a lid that closes the key hole and opens and closes is attached.

[0013]

[Function] During normal elevator traveling, the lid closes the bottom of the keyhole in the landing door, but when a rod-shaped dedicated key is inserted into the keyhole, the lid that closes the keyhole is pushed by the key, The lock can be released and the normal unlocking operation can be performed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in FIGS. A cylindrical key cylinder 13 provided with a keyhole is attached to the back surface of the door 1 at the landing with a stopper and washer 14, and a mount 17 is fixed beside it. Further, an L-shaped mounting plate 18 is attached to the mounting base 17. At this time, the surface of the L-shaped mounting plate 18 is located above the key cylinder 13.

L located above the key cylinder 13
A lid 2 supported by a pin standing on a fulcrum 19 of the shape mounting plate 18
Install 0. The lid 20 directly closes the key hole at the bottom of the key cylinder 13. A weight L-shaped metal fitting 21 is attached to the lid.

With this structure, when the dedicated key 16 (unlock key) is inserted into the key hole 15 of the key cylinder from the surface of the door 1 at the hall, the lid 20 is pushed by the dedicated key 16 and the fulcrum 19 is set. It is pushed up in the direction of the arrow as the center.

When the dedicated key 16 is inserted to a predetermined position (position where the unlock lever 12 can be operated) and rotated, the unlock lever 12 rotates, and the interlock lever 7 integrated with this rotates. The lock mechanism of the lock is released, and the door 1 at the landing can be opened.

When the dedicated key 16 is removed, the lid 20 returns to its original position by its own weight, and the key hole of the key cylinder is closed again. At this time, since the L-shaped metal fitting 21 is attached to the lid 20 as a weight, the lid 20 is pressed against the key hole 15 of the key cylinder 13 to close the key hole 15 without any gap.

As described above, during normal elevator operation, light pouring into the hoistway does not leak from the keyhole, and when unlocking the hall doors, the lock mechanism for the hall doors is operated in the conventional manner. It can be canceled.

Another embodiment of the present invention (FIGS. 4 and 5). The key cylinder 13 is attached to the back surface of the door 1 at the landing, and the attachment plates 22 and 23 are attached to the lower portion thereof.

The mounting plate 22 is fixed to the back surface of the door 1 of the hall,
The mounting plate 23 is mounted on the mounting plate 22, and the upper portion thereof is located below the key cylinder 13.

A spring hinge 24 is attached as a lid to a mounting plate 23 located below the key cylinder 13. A cushion 25 is attached to the surface of the spring hinge 24, and the cushion 25 closes the keyhole 15 by the spring force of the spring hinge 24.

With the above structure, when the unlock key 16 is inserted into the keyhole from the surface of the door 1 at the hall, the spring hinge 24 is pushed by the unlock key 16 and is pushed down in the direction of the arrow about the fulcrum. The unlock key 16 can be inserted to a predetermined position (position where the unlock lever 12 can be operated), and when the unlock key 16 is rotated, as described above, the interlock lever 16 operates in conjunction with the operation of the unlock lever 12. 7 rotates, the lock mechanism is released, and the door 1 at the hall can be opened.

When the unlock key 16 is removed, the spring hinge 24 returns to its original position with the fulcrum as the axis by the spring force.
The cushion 25 closes the keyhole again.

With the above construction, during normal elevator operation, light pouring into the hoistway does not leak from the keyhole,
Further, when unlocking the door at the hall, the door lock mechanism can be released by a conventional method.

Further, by using the spring hinge according to the present embodiment, the keyhole of the key cylinder can be closed from any direction from above, below, left and right, so that even if various attachments are attached to the back surface of the landing door, it can be moved up and down, left and right. It can be installed if there is space somewhere.

[0027]

According to the present invention, in a prospective elevator or the like, even when the hoistway is exposed to sunlight and light is poured, light does not leak from the keyhole of the landing door to the landing side. It will not hurt you.

[Brief description of drawings]

FIG. 1 is a front view of an elevator hall entrance / exit according to the present invention (view seen from the hoistway side).

FIG. 2 is a partial detailed view of FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view corresponding to FIG. 2 according to another embodiment of the present invention.

5 is a view taken along the line V-V in FIG.

FIG. 6 is a front view of a conventional hall entrance (view from the hoistway side).

FIG. 7 is a partial detailed view of FIG.

FIG. 8 is an explanatory diagram of an operation state of FIG.

9 is a view taken along the line IX-IX in FIG.

FIG. 10 is a front view of the unlock key 16.

[Explanation of symbols]

 1 ... Door in door 2 ... Door hanger 3 ... Hanger roller 4 ... Header case 5 ... Hanger rail 6 ... Switch box 7 ... Interlock lever 8 ... Support point 9 ... Latch 10 ... Stopper 11 ... Door closing confirmation switch contact 12 ... Unlock lever 13 ... Key cylinder 14 ... Stopper / Lock washer 15 ... Key hole 16 ... Unlock key-24 ... Spring hinge

Claims (3)

[Claims] 1. An elevator door unlocking device in which a keyhole for a key for unlocking by a key cylinder is provided in a doorway of a hall, wherein a lid is provided at the bottom of the keyhole. Door unlocking device. 2. The unlocking device for an elevator hall door according to claim 1, wherein a lid that closes the keyhole is suspended from a fulcrum provided above the bottom of the keyhole. 3. The unlocking device for an elevator landing door according to claim 1, wherein the lid is formed of a spring hinge and is attached around the bottom of the keyhole.