JPH0258198B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an unlocking device for an elevator landing door.

Elevator doors consist of a landing door installed at the entrance of a building and a car door installed on the car side. By the way, the car door opening/closing device is operated by the door opening/closing device mounted on the car, and the opening/closing timing is when the car reaches the nearest floor.
It opens and closes together with the landing door. In other words, an engagement plate is attached to the car door to transmit the movement of the car door to the hall side, and an engagement device is attached to the landing door to receive the engagement plate, so that when the car door opens and closes, the landing door also opens and closes at the same time. It is.

On the other hand, if the landing door is carelessly opened or closed from the landing side when the car is not on the designated floor, there is a risk of an accident in which someone may fall into the hoistway, so under normal circumstances, the landing door cannot be opened from the landing side. A locking mechanism is provided.

Furthermore, if the car moves while the landing door is open,
Since there is a risk of personal injury, a contact is provided to cut off the elevator operating circuit when the door is opened. For example, in the case of a general-purpose elevator, an interlock device is constructed that combines the above-mentioned mechanisms into one device.

This interlock device engages with the car door and the landing door, and has functions such as opening and closing the normal landing zone, locking the doors, and opening and closing the driving circuit.

In particular, when a car stops mid-floor due to maintenance inspections, breakdowns, earthquakes, etc., the landing door, which normally should never be opened, can be easily opened and closed from the landing side by specific persons such as managers and maintenance inspectors in the event of an emergency. A locking and unlocking device is provided.

In Figures 1a and 1b, this is a view of the landing door consisting of two panels from the hoistway side.
The upper part of the landing door 1 is supported within a header case 2 via a door hanger rail 3, rollers 4, and door hanger 5, and the lower part is guided by a guide shoe 7 attached to a seal 6.

An interlock device 8 is installed on the top of the landing door 1.
It is attached to the side, and when closed, engages with an interlock 9 provided on the fixed side.

To unlock the interlock device 8, there are two methods: one is to put a key hole in the landing door and use the key to unlock the door, and the other is to insert a plate-shaped key (unlock key) into the gap between the three-sided frame and the landing door. .

As a specific example of the above, as shown in FIG. 2, an insertion hole 11a for the key 11 is provided in the landing door 1 in advance, the key 11 is inserted into the arm 13 directly connected to the interlock lever 12, and the tip of the key is bent in one direction. 11b in the direction of the arrow 11c, and the arm 13 is moved to the fulcrum 14 in the direction of the arrow 14.
Rotate around a.

Thereby, the lock is released by disengaging the switch 15 of the control circuit, the hook part 16 of the mechanical locking part, and the stopper 17.

As shown in FIG. 3, the second method uses a separate U-shaped member fixed to the interlock lever 12 to release an unlocking member that bypasses the upper part of the door hanger 5 and extends close to the door hanger rail 3. 18 is provided, and a plate-shaped key 20 is inserted between the three-sided frame 19 and the landing door 1, and the tip of the unlocking member 18 is pulled down to engage the switch 15 and the hook 16 of the locking part in the same way as in the conventional example. An unlocking method is used in which the stopper 17 is disengaged.

However, the key insertion hole 1 in the landing door 1
Items with 1a are disadvantageous in terms of design, and the door surface is damaged when handling the key, and the manufacturing cost increases due to the keyhole, etc., and the keyhole is conspicuous. There were various problems such as being subject to.

On the other hand, the second method solves various drawbacks of the first method, but because the unlocking device is formed in a U-shape and is installed inside the header case, it is installed avoiding various mechanisms inside the header case. However, the disadvantage was that the structure was complicated.

In other words, the U-shaped unlocking device has an unlocking metal fitting above the gap in the three-sided frame door panel, but the interlock device is fixed to the back of the door panel or door hanger, and there is a door hanger and a door hanger in the middle between the three-sided frame and the door panel. There are rails, door interlocking devices, etc., and since these are bypassed, the unlocking metal fittings are relatively larger than the first method, so if the metal shape is the same, the metal fittings will be weaker and vibration will occur during opening and closing. Cheap.

In addition, if the shape of the material is made larger to increase strength, there is a higher possibility that the header case body, rail, fixed part of the rail support will come into contact with the unlocking metal fitting that moves with the door during door opening and closing, and there is a limit to how much the shape can be changed. Ta.

Furthermore, in order to avoid interference with the 2:1 interlocking mechanism at the top of the door hanger or the 1:1 left and right door interlocking mechanism, the unlocking fitting has a larger gap A between the interlocking mechanism and the header case body than in the first method. As a result, the outer size of the header case became larger.

In recent years, there has been a strong desire to make more effective use of building space by reducing the distance within the hoistway or between the upper and lower floors, and it is desirable to avoid increasing the header case dimensions due to the installation of unlocking fittings. .

As mentioned above, the second method involves attaching a larger unlocking metal fitting to the car hall door engagement device, which reduces performance due to the generation of vibrations.
There were drawbacks such as an increase in external size.

[Purpose of the invention]

The present invention has been made in consideration of the above points, and the unlocking member directly connected to the interlock lever for unlocking the landing door is made to protrude from the upper part of the header case and the landing door and from the lower part of the door hanger rail without making a detour. To provide a reliable unlocking device which has a simple structure and prevents vibration of an unlocking member.

[Summary of the invention]

The present invention relates to a landing door locking device that includes a landing door of an elevator and an interlock lever for locking the door on the back side of the door. This invention relates to an elevator hall door unlocking device that protrudes above the door and the three-sided frame and is provided below the door hanger rail.

[Embodiments of the invention]

An embodiment of the present invention will be described based on the drawings. Fourth
In the figure, after installing the door hanger 5 with the roller 4 attached to the upper part of the landing door 1 using the screw 1a through the installation hole 5a, attach the interlock device 8 to the side using the screw 8b using the installation hole 8a and screw hole 1b. .

In the interlock device 8, for example, an L-shaped unlocking fitting 21 is integrally attached to the interlock lever 12 with a screw 21a (which may be integrally molded or welded) as shown in FIG.

Since this unlocking metal fitting 21 protrudes from the side, an opening hole 22 is previously provided in the front of the door hanger 5 so that the unlocking fitting 21 penetrates through the door hanger 5. The door hanger rail 3 protrudes from the bottom of the door hanger rail 3. In other words, in the present invention, a hanger rail 3 is installed in a header case 2 provided in a landing, the upper part is supported by the hanger rail 3 via a roller 4 and a door hanger 5, and the lower part is guided through a sill 6 and a guide shaft 7. An elevator hall door unlocking device comprising a door 1, a locking part and its interlock device 8 on the back side of the hall door 1, and an unlocking fitting 21 attached to the lever 12 of the interlock device 8, as described above. door hanger 5
This elevator hall door unlocking device is characterized in that an opening hole 22 is provided in the elevator hall door, and the unlocking metal fitting 21 is made to penetrate through the opening hole 22 and project toward the hall side.

This completed side view is shown in Figure 5, and the three-sided frame 2 is exactly
3 and the landing door 24, the unlock key 20 is plate-shaped and has a notch 20b at the tip.
a, hook the notch 20b on the unlocking metal fitting 21, and pull it down to rotate around the fulcrum 14a,
As before, the control circuit switch 15 and mechanical lock are released and the elevator start control circuit is turned off.
The adjacent landing door 1 can be opened freely.

According to the present invention, since there is no need for a keyhole in the hall door, the advantages in design and panel structure remain unchanged, and there is no need to increase the size of the header case, which is required by the conventional method of unlocking from the three-sided frame or between the door panels. becomes. In addition, interference with various devices can be easily avoided by arranging the unlocking metal fitting on the underside of the rail where it will not interfere with the interlocking device or the rail.

Furthermore, since the unlocking fitting is smaller than the interlock device, vibrations during opening and closing can be avoided.

In addition to the above-mentioned embodiments, a method may be used in which the latch part is made into a bolt-like unlocking metal fitting, and a metal fitting is vertically formed integrally therewith.

As described above, according to the present invention, it is possible to provide an elevator landing door unlocking device that is excellent in design and has a simple structure and high reliability.

[Brief explanation of drawings]

Figure 1 is a front view of the landing door seen from the hoistway side.
Figure 2a is a front view of the conventional landing door interlock device, Figure 2b is a side view of Figure 2a, Figure 3a
is a front view of a conventional landing door interlock device;
Fig. 3b is a side view of Fig. 3a, Fig. 4 is an exploded perspective view of the interlock device of the present invention with the unlocking fitting attached, Fig. 5 is a side view of Fig. 4, and Fig. 6 is the unlocking key. FIG. 1...Passenger door, 3...Door hanger rail, 12...
Interlock lever, 21...Unlocking metal fitting, 23...
Three-sided frame.

Claims (1)

[Claims] 1. A hanger rail is installed in a header case provided at the landing, and the hanger rail has an upper part supported through a roller and a door hanger, a landing door whose lower part is guided through a sill and a guide shoe, and a locking part on the back side of the landing door. In an elevator landing door unlocking device comprising the interlock device and an unlocking metal fitting attached to the lever of the interlock device, an opening hole is provided in the door hanger and the unlocking metal fitting passes through the opening hole. An elevator landing door unlocking device characterized in that the door unlocking device is configured to project toward the landing side.