JP3422654B2 - Door closing device for elevators, etc. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hall door closing device for closing a terminal of a hall door of an elevator or the like.

[0002]

2. Description of the Related Art FIGS. 6 to 7 are views showing an example of a conventional two-door, one-way pulling type landing door, its door closing device, and an interlock device. In the figure, 1 and 2 are 2
The single-land hall door 3 is a hanger roller for suspending and supporting the hall doors 1 and 2, and the end of the interlocking rope 4 forming a part of the hall door closing device is fixed. The interlocking rope 4 is changed in direction downward via a roller 5, and the other end thereof is connected to a weight 7 that slides in a weight guide 6 fixed to the hall door 1. 8 is a landing door rail on which the hanger roller 3 and the landing doors 1 and 2 travel, 9 is a three-way landing frame,
10 is a rubber door. In the figure, the part denoted by reference numeral A is an interlock device.

8 and 9 are enlarged front views of the landing door interlock device. FIG. 8 shows the door closed state, and FIG. 9 shows the door opened state. Reference numeral 11 denotes a mounting base fixed to the hanger roller 3 not shown in FIG. 8. A shaft 12 is fixed to the mounting base 11, and a movable side interlock 13 is axially supported via the shaft 12. There is. A movable lock switch 14 is fixed to one end of the movable interlock 13. Reference numeral 15 is a fixed side lock switch, and 16 is a fixed side interlock. 17 is a movable side interlock 1
A door opening roller provided at the other end of 3 and a door closing roller 18 are also provided.

FIG. 9 is an enlarged front view showing the state of the interlock device immediately before the landing door is fully closed due to the engagement of the movable side interlock 13 and the fixed side interlock 16, and FIG. Reference numeral 19 is a door closing guide, and 20 is a door opening guide, both of which are fixed to a car door (not shown). When the car arrives at the landing floor, the door-closing guide 19 and the door-opening guide 20 move the door-closing roller 18 or the door-opening roller 17 to bring the interlock device into the door-closed state or the door-opened state.

The elevator door configured as described above is opened and closed by engaging a car door driven by an electric motor and a landing door 1 that is closed by the weight of the weight 7 after stopping at the destination floor.
The car door and the hall door 1 are fully closed or opened with a predetermined force.

[0006]

In the conventional elevator door having the above-mentioned structure, the car door and the landing door can be opened and closed with a predetermined force at all times, but the gusts entering from the entrance or the like are released. Wind pressure generated by flowing into the hoistway through the gap between the elevator door and the three-way frame of the hall,
There is a case where the hall door being closed is stopped near the terminal end, so the hall door is not fully closed and the door lock detection switch does not operate. In this state, the elevator cannot be used because it has not started, so there is a problem that the operation efficiency of the elevator is significantly reduced.

In order to deal with this problem, the weight for closing the hall doors has been conventionally increased to deal with the problem. However, as a measure against strong wind, simply adding the weight is not effective and the elevator is While there are many complaints that they will not start, even if maintenance staff dispatched to the site to deal with the complaints, they often returned to normal operation when they arrived, which caused inconvenience.

The present invention has been made in order to solve the above problems, and a landing door that is closed does not stop near the terminal end due to wind pressure such as gusts entering from outside the building, and even in strong winds. You can surely fully close the hall door,
An object of the present invention is to obtain a landing door closing device for an elevator or the like that can always maintain the elevator or the like in a good operating state.

[0009]

A landing door closing device for an elevator or the like according to the present invention includes an electromagnet having one end penetrating through a hole provided in a three-way frame of a landing and protruding toward the landing door, and the electromagnet being horizontal. An actuator driven in the axial direction, ON / OFF of excitation of the electromagnet and an operation of an actuator driving the electromagnet in the horizontal axis direction are controlled based on door lock state detection signals from the car door lock detection means and the landing door lock detection means. A controller is provided, and if the hall door is not fully closed and the hall door lock detection means does not operate even after the preset door closing time has elapsed after the car door lock detection means operates, the actuator is judged to be abnormal and the actuator is operated. Then, by causing the electromagnet to project from the three-way frame toward the hall door and exciting the magnet, the electromagnet is attracted while adsorbing the hall door that is stopped without being fully closed. Back, it is to force the hall door as it can all closed.

Further, a plunger electromagnet having one end fixed to the plunger and the other end penetrating through a hole provided in the landing frame on three sides of the landing frame and protruding toward the landing door, and a hollow portion are provided. The hollow cylindrical electromagnet installed in the landing three-way frame so as to be axially drivable by inserting the plunger into the hollow portion and one end fixed to the plunger electromagnet and the other end abutting the landing three-way frame. An elastic member and a controller for controlling the excitation states of the hollow cylindrical electromagnet and the plunger electromagnet on the basis of door closing state detection signals from the car door closing detection means and the landing door closing detection means, and the car door closing detection means operates. If the landing door is not fully closed and the landing door tightening detection means does not operate even after the preset door closing time has elapsed, it is determined to be abnormal, the hollow cylindrical electromagnet is excited, and the elastic member is activated. By compressing and exciting the plunger electromagnet provided in the landing three-way frame toward the landing door from the landing three-way frame and exciting, the elastic member of the elastic member is attracted while adsorbing the landing door that is stopped without fully closing. The plunger electromagnet is restored by the restoring force to forcibly fully close the hall door.

Further, a plunger electromagnet is installed in the upper door-stop rubber mounting hole.

Further, an iron plate is attached to the back surface of the hall door made of stainless steel to enable attraction by a plunger electromagnet.

[0013]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1. 1 shows a hall door closing device for an elevator or the like that is Embodiment 1 of the present invention, and is a front explanatory view of the vicinity of the hall door as seen from the hoistway side. In the figure,
1 and 2 are landing doors similar to those in the prior art, and 3 is a hanger roller that suspends and supports the landing doors 1 and 2, and the end of the interlocking rope 4 that constitutes a part of the landing door door closing device is fixed. ing. The interlocking rope 4 is redirected downward via a roller 5, and the other end thereof is connected to a weight 7 sliding in a weight guide 6 fixed to the hall door 1. 8 is a landing door rail on which the hanger roller 3 and the landing doors 1 and 2 travel, 9
Is a three-way landing frame, and 10 is a door-stop rubber provided on the upper and lower portions of the three-way landing frame 9. The part denoted by reference numeral A is an interlock device similar to that of the conventional art shown in FIG. 5, and its operation and effect are also similar.

On the other hand, the part denoted by reference numeral B is a landing door closing device which is a main part of the present invention, and its detailed structure is as shown in FIGS. 3 and 4. Reference numeral 21 is an electromagnet formed in the shape of a hollow cylinder, which is fixed to the landing frame three-way frame 9 via a cylindrical support 21a. The plunger 22 is inserted into the hollow portion of the electromagnet 21, and the electromagnet 23 is attached to one end thereof.
a is fixed and constitutes the plunger electromagnet 23. The electromagnet 21 and the plunger 22 function as an actuator that drives the plunger electromagnet 23 in the horizontal axis direction. One end of a spring 24 functioning as an elastic member is fixed to one end of the plunger electromagnet 23, and the other end of the plunger electromagnet 23 penetrates through a door stop rubber mounting hole 9a provided in an upper part of the landing frame three-way frame 9. The structure is such that it is projected to the outside of the three-way frame 9 of the hall, that is, to the side of the hall door, and the cap 25 is fixed to the tip portion. The spring 24 is housed inside the tubular support 21a with its other end abutting against the inner side surface of the landing frame 3-sided frame 9. Numeral 26 is a stopper rubber that regulates the movement of the plunger 22, and is fixed to the wall surface covered with the three-way landing frame 9 on each floor.

FIG. 5 is a block diagram showing the overall configuration of the control system of the present embodiment. The car door lock detection switch 27 functions as car door lock detection means, the hall door lock detection switch 28 that functions as hall door lock detection means, and A control device 2 for controlling the excitation states of the hollow-cylindrical electromagnet 21 and the plunger electromagnet 23 on the basis of door closing state detection signals from the detection switches 27 and 28.
It is composed of 9 and 9.

In the apparatus having the above structure, the elevator car is on the first floor, for example, and the landing door 1 is not fully closed due to wind pressure such as a gust of wind from the entrance or the like. When the above continues, the electromagnet 21 is controlled by the control device 29.
The plunger electromagnet 23, which is excited by and is projected from the three-way frame 9 of the hall, is moved in the direction of the hall door 1 (to the right in the drawing) and brought into contact with the hall door 1 via the cap 25. At this time, the spring 24 is compressed and elastic energy is stored in the spring 24. At the same time, the landing door 1 is attracted by energizing and exciting the plunger electromagnet 23. Next, when the control device 29 cuts off the excitation of the electromagnet 21,
The elastic force stored in the spring 24 causes the plunger 22 to return to a position where it comes into contact with the stopper rubber 26 to fully close the hall door 1 and securely engage the interlock device. As a result, the landing door lock detection switch 28 is turned on, and the excitation of the plunger electromagnet 23 is also cut off by the control device 29.

According to the configuration of the present embodiment, the plunger electromagnet 23 is provided so as to project toward the door closing side of the three-way landing frame 9.
By attracting the landing door 1 with its magnetic force and fully closing it by the restoring force of the spring 24, the landing door 1 is not closed near the terminal end due to wind pressure when the door is closed, and the landing doors 1 and 2 are secured even in strong wind. The elevator can be fully closed and the elevator can always be maintained in a good operating condition.

Further, since the plunger electromagnet 23 is moved by the restoring force of the spring 24 to completely close the hall door 1, the structure is simplified and the cost can be reduced, and the installation place is small and a compact device can be obtained. .

Further, by installing the plunger electromagnet in the rubber stopper hole at the upper part of the landing three-way frame 9, the installation is easy and the cost can be reduced, and the compact and excellent appearance can be obtained.

Embodiment 2. In the first embodiment, as a means for driving the plunger electromagnet 23 in the horizontal axis direction, the structure in which the plunger 22 is inserted into the hollow portion of the hollow cylindrical electromagnet 21 is adopted. The same effect can be obtained by using a well-known drive means such as a motor, a pneumatic pressure or a hydraulic cylinder, in addition to the above as the actuator that drives in the direction.

The door closing device of the present invention can be applied not only to elevators but also to landing door door closing devices of other devices used for the same purpose.

[0022]

Since the present invention is constructed as described above, it has the following effects.

According to the first aspect of the present invention, when the state in which the elevator door is closed exceeds a preset time, the electromagnet attached to the three-way frame of the hall protrudes, and the hall door is attracted by the magnetic force of the electromagnet and the hall door. Since it is pulled to fully close, the door being closed does not stop near the end due to wind pressure,
Even when the wind is strong, the hall doors can be fully closed to maintain a good driving condition.

Further, according to the invention of claim 2, the landing door is pulled and fully closed by the restoring force of the elastic member.
In addition to the effect of (3), the configuration can be simplified, the cost can be reduced, and a compact device can be provided.

According to the third aspect of the present invention, by installing the plunger electromagnet in the rubber mounting hole for the upper door, the mounting is easy and the cost can be reduced, and the compact and excellent appearance can be obtained. .

Further, according to the invention of claim 4, even when the hall door is made of a material such as aluminum or stainless steel which is not adsorbed by the electromagnet, it is possible to attach the iron piece to the back side of the hall door so that the iron piece can be adsorbed. it can.

[Brief description of drawings]

FIG. 1 is a front explanatory view of a landing door and a door closing apparatus therefor showing a first embodiment of the present invention as seen from a hoistway side.

FIG. 2 is a front explanatory view showing a state immediately before the hall door according to Embodiment 1 of the present invention is fully closed.

FIG. 3 is an enlarged view of the door closing device when the hall door is in the state shown in FIG. 1.

FIG. 4 is an enlarged view of the door closing device when the landing door is in the state shown in FIG.

FIG. 5 is a block diagram showing a configuration of a control system of the present invention.

FIG. 6 is a front explanatory view of a conventional hall door and its door closing device as viewed from the hoistway side.

FIG. 7 is a front explanatory view showing a state during door closing before the hall door is fully closed in FIG. 6;

8 is an enlarged view of the interlock device in the state shown in FIG.

9 is an enlarged view of the interlock device in the state shown in FIG. 7. FIG.

FIG. 10 is a view showing the engagement relationship between the interlock device and the door opening / closing guide immediately before locking.

[Explanation of symbols]

1, 2 hall doors, 3 hanger rollers, 4 interlocking loops, 5 rollers, 6 weight guides, 7 weights, 8 hall door rails, 9 hall three-way frames, 10 doors per rubber, 11
Mounting base, 12 axis, 13 Movable side interlock, 14
Movable lock switch, 15 Fixed lock switch, 16
Fixed side interlock, 17 door opening roller, 18 door closing roller, 19 door closing guide, 20 door opening guide, 21 electromagnet, 22 plunger, 23 plunger electromagnet, 24 spring, 25 cap, 26 stopper rubber , 27 Car door lock detection switch, 28
Door lock detection switch, 29 control device.

Claims (4)

(57) [Claims] 1. An electromagnet having one end penetrating through a hole provided in a three-way frame of a landing and protruding toward a landing door, an actuator for driving the electromagnet in a horizontal axis direction, a car door tightening detection means and a landing door tightening detection means. ON-O of excitation of the electromagnet based on the door closing state detection signal
A control device for controlling the operation of the FF and an actuator for driving the electromagnet in the horizontal axis direction, and the hall door is fully closed even after a preset door closing time has elapsed since the car door lock detection means was operated. If the landing door lock detection means does not operate, it is judged to be abnormal, the actuator is operated, and the electromagnet is projected from the three-way frame toward the landing door and excited, thereby stopping without being fully closed. A hall door closing device such as an elevator, which is characterized by pulling back an electromagnet while adsorbing the hall door and forcibly closing the hall door completely. 2. A plunger electromagnet, comprising a plunger and one end fixed to the plunger, the other end penetrating through a hole provided in the landing frame on three sides of the landing frame and protruding toward the landing door side, and a hollow electromagnet. A hollow cylindrical electromagnet installed in the landing three-way frame so as to be axially drivable by inserting the plunger into the hollow part; one end fixed to the plunger electromagnet and the other end abutting the landing three-way frame. An elastic member, and a controller for controlling the excitation states of the hollow cylindrical electromagnet and the plunger electromagnet based on the door closing state detection signals from the car door closing detection means and the landing door closing detection means, and the car door closing detection means is provided. When the hall door is not fully closed and the hall door tightening detection means does not operate even after the preset door closing time has elapsed after the operation, it is judged as abnormal, the hollow cylindrical electromagnet is excited, and the elastic member By compressing the plunger electromagnet provided in the landing three-way frame while projecting from the landing three-way frame toward the landing door and exciting the same, the elastic member of the elastic member is attracted while adsorbing the landing door that is stopped in a state not fully closed. A hall door closing device for an elevator or the like, characterized in that the plunger electromagnet is restored by a restoring force to forcibly fully close the hall door. 3. The landing door door closing device for an elevator or the like according to claim 2, wherein a plunger electromagnet is installed in a rubber mounting hole on the upper door contact. 4. A landing door door closing device for an elevator or the like according to claim 2 or 3, wherein an iron plate is attached to the back surface of the stainless steel landing door to enable adsorption by a plunger electromagnet.