JPH047291A - Elevator hall door unlocking device - Google Patents

Abstract

PURPOSE:To make unlocking of an elevator hall door easy by providing an unlocking lock, which turns the hall door locking key toward the unlocking direction, on the upper part of the hall door after forming the upper frame of a three way frame turnable. CONSTITUTION:When a hall door 3 is to be opened from the boarding side of an elevator, an upper frame 2c is slid side ways and removed from a stopper thus making the hall door 3 open and close. This makes the upper frame 2c openable as shown in chain lines on the sketch with a hinge 21 as its axis. Now a key 11a is engaged with a latch 10 and the hall door 3 is locked. Next, by turning a knob 27 by hand, a cam 25, functioning as an unlocking lock, also turns, a pin 24 is pushed up, the key 11 is turned and removed from the latch 10 and the hall door 3 is unlocked. The hall door 3 thereby can be unlocked easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for unlocking an elevator hall door from the hall side.

[Prior Art] An elevator door consists of a landing door and a car door, and when the car lands on a floor, the car door and the landing door are opened and closed in conjunction with each other. In other words, when the car door is opened and closed by the door driving device mounted on the car, the engagement plate provided on the car door and the engagement device provided on the landing door engage with each other, and the movement of the car door is controlled by the landing door. By transmitting the signal to the door, the car door and the landing door are opened and closed at the same time.

The landing door is equipped with a locking mechanism so that it cannot be opened or closed carelessly from the landing when the car is not on the floor. A bottle so that the landing door can be opened and closed easily.
A locking and unlocking device is provided.

5 and 6 are, for example, Utility Model Application No. 56-154978.
Figure 5 is a front view of a conventional elevator landing door unlocking device similar to the one shown in the publication, and Figure 6 is a cross section taken along the line Vl-Vl in Figure 5. This is an enlarged view.

In the figure, (1) is the opening leading from the landing to the hoistway, and (2) is the opening leading from the landing to the hoistway.
) is a three-sided frame consisting of a vertical frame (2a) that is installed in the opening (1) and stands side by side and an upper frame (2b) that connects these, and (3) is a landing door placed on the hoistway side of the three-sided frame (2). , (4) is a door hanger formed in an L shape and fixed to the landing door (3) with a roller (5) attached to the top. (6) is a header case fixed to the hoistway side of the building wall, and is fixed to the landing door (3). A hanger rail (7) is fixed horizontally and a roller (5) is suspended from it. (8) is a support plate fixed to the header case (6), and the lock switch (9) has a fixed contact (9a).
and the latch (lO) is fixed. (111 is the locking mechanism provided on the door hanger (4), and the latch (lO)
The movable contact (12al) is pivotally mounted to engage the key [11al] and is in contact with the fixed contact (9a) of the locking switch (9).
)have. (13) is a removal bar supported vertically movably on the hoistway side of the landing door (3) and urged upward by a push spring (14), the upper end of which is located below the key (lla), and the lower end is hanging vertically. (15) is a cylindrical keyhole provided near the lower end of the removal bar (13) at the top of the landing door (3), and (16) is inserted into the keyhole (15) to operate the removal bar (13). (17) is a slider attached to the lower end of the landing door (3), and (18) is a sill laid on the landing floor and having a groove for guiding the slider (17).

A conventional elevator landing door unlocking device is constructed as described above, and when a car (not shown) is not in the landing, the key 111a) is locked to the latch (10) as shown in FIG.
), and the landing door (3) is engaged with the landing door (3) by hand from the landing flll+.
I can't open it. At this time, the fixed contact (9a)
The movable contact (12) is in contact, and locking is also confirmed electrically.

In this state, if it is desired to open the landing door (3) from the landing side, the key (16) is used. i.e. key (16)
Insert it through the key hole (15) and remove it with the tip of the rod (
13) Push up the bottom end. Now, the upper end of the release bar (13) is disengaged from the latch (lO) and unlocked by rotating the key [11a] upward. Key [1lal
When the lock is rotated, the movable contact (12) and the fixed contact (9a) are opened, so that unlocking is electrically detected. with this,
When the landing door (3) is opened by hand, the roller (5) is guided on the door hanger rail (7) and the landing door (3) can be opened.

[Problems to be Solved by the Invention] In the conventional elevator landing door unlocking device as described above, the key (16) is inserted through the key hole (15) provided at the top of the landing door (3). Since the keyhole (15) is unlocked, there are problems in that the keyhole (15) is exposed on the landing side, spoiling the appearance and increasing the manufacturing cost for providing the keyhole (15). In addition, the maintenance inspector must use the key (1
6) There is a problem in that it is necessary to carry it with you.

This invention was made in order to solve the above problems, and it is an elevator landing door that does not have a key hole in the landing door and can be easily unlocked without using a key. The purpose is to provide equipment.

[Means for Solving the Problems] The elevator landing door unlocking device according to the present invention has the upper part of the three-sided frame rotatably formed, and a key for locking the landing door is provided at the top of the landing door. It is equipped with an unlocker that rotates in the direction of the lock.

[Function] In this invention, since the upper part of the three-sided frame is rotatable and the unlocker is provided at the top of the landing door, the landing door can be unlocked by opening the upper part of the three-sided frame and operating the unlocker. be locked.

E Example 1 Figures 1 to 4 are diagrams showing an example of the present invention.
The figure is a front view seen from the hoistway side, and Figure 2 is II of Figure 1.
-TI line sectional enlarged view, FIG. 3 is an explanatory diagram of locking operation, and FIG. 4 is an explanatory diagram of unlocking operation, and parts similar to those of the conventional device are designated by the same reference numerals.

In the figure, (2c) is an upper frame that is pivotally connected to the vertical frame (2a) by a hinge (21) and is configured to be movable in the horizontal direction;
22) is a stopper that is attached to the vertical frame (2a) and prevents the upper azusa (2C) from rotating; (23) is a curtain plate that is provided on the landing side and closes the opening (1) above the upper frame (2c); (24
) is a bottle fixed to the key (11a), and (25) is a cam located directly below the bottle (24), which is fixed to one end of a shaft (26) passing through the door hanger (4). (27)
is a knob connected to the other end of the shaft (26).

In the elevator landing door unlocking device configured as described above, the upper frame (2C) is normally prevented from rotating by the stopper (22) to prevent it from being opened or closed by mistake.

If you want to open the landing door (3) from the landing side, open the upper frame (2C
) in the horizontal direction, the upper Azusa (2C) will move to the stopper (22
) and can be opened and closed. Now, the upper Azusa (2c) can be opened about the hinge (21) as shown by the chain line in FIG. At this time, the cam (25) and the bottle (24) are in the relationship shown in Figure 3, and the key (lla) is the latch (1).
0), and the landing door (3) is locked.

Next, when the knob (27) is rotated by hand, the cam (25)
) is also rotated, the bottle (24) is pushed up as shown in FIG. 4, the key fla) is rotated and released from the latch (lO), and the landing door (3) is unlocked.

[Effects of the Invention] As explained above, in this invention, the upper part of the three-sided frame is formed to be rotatable, and an unlocker for rotating the key for locking the landing door in the unlocking direction is provided on the top of the landing door. As a result, the landing door can be unlocked by opening the upper frame of the three-sided frame and operating the unlocker, eliminating the need for a keyhole in the landing door, improving the appearance of the landing side, and reducing manufacturing costs. There is an effect that can be lowered. It also has the effect of allowing you to easily unlock the landing door without using any specific tools.

[Brief explanation of drawings]

Fig. 1 is a front view from the hoistway side showing an embodiment of the elevator hall door unlocking device according to the present invention, Fig. 2 is an enlarged cross-sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a locking FIG. 4 is an explanatory diagram of unlocking operation; FIG. 5 is a front view of a conventional elevator landing door unlocking device as seen from the hoistway side;
FIG. 6 is an enlarged cross-sectional view taken along the line Vl--Vl in FIG. 5. In the diagram, (2) is the three-sided frame, (2c) is the upper frame, (3) is the landing door, (lO) is the latch, (lla) is the key, (2
1) is the hinge, (25) is the unlocking element (cam), (27
1 is a knob. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 1 Figure 2 2 Two-frame 3 Higashikuado Item 0 I Fu + + a Information 25 Cam 21 Shi) 27 Tsumato Figure Figure 2 Figure Procedure Amendment (Voluntary) 26th month, 1990

Claims (1)

[Claims] A landing door is arranged on the hoistway side of the three-sided landing frame, and a key pivotally attached to the top of the landing door engages with a latch provided on a fixed part to lock the landing door, and the key is rotated. In the device for unlocking the landing door when the engagement is released, the upper frame of the three-sided frame is formed to be able to rotate upwardly, and the lock is attached to the top of the landing door when the door is manually operated. An elevator landing door unlocking device characterized by being provided with an unlocking element that rotates the door in the unlocking direction.