JPH05213569A - Locking device for elevator door - Google Patents

Abstract

PURPOSE: To lock a door of a dual sliding door type elevator using a linkage and two blades by on locking unit. CONSTITUTION: An elevator driven by a linkage of dual sliding door type comprises one locking unit, an air cord 20, a first hall door 16 mounted at the cord 20, and a second hall door 18 having a stopper 32 engaged with the cord 20. The door 18 is locked by the locking unit. The cord 20 is mounted with a contact member 34. When the doors 16, 18 are closed, the member 34 is brought into contact with the stopper 32 mounted at the door 18. Thus, when the door 18 is locked, the door 16 is not moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device for an elevator, and more particularly to a door locking device for a double door sliding elevator using a link mechanism and two vanes.

[0002]

2. Description of the Related Art The door of a two-door double-door sliding type elevator is composed of a pair of car doors and a pair of landing doors. Each door opens and closes left and right from the center of the elevator doorway.

The link mechanism is used to open and close the door system of a two-seat double-door type elevator. A door drive unit is attached to each car door by a link mechanism. As is well known, by arranging the link mechanism for each door and the door driving unit,
One car door moves at a different speed than the other car door.

In a typical door system of an elevator driven by a link mechanism, one vane is arranged between the first car door and the first landing door. When the car door is opened and closed by the link mechanism, the first landing door is opened and closed together with the first car door. This is because the first car door and the first landing door are connected by the vane.

The two landing doors are firmly connected by a cord (a well-known air cord) arranged around a pair of pulleys. When opening and closing the first landing door, the second landing door is also opened and closed. This is the second by air code
This is because the landing door and the first landing door are connected. Since the landing doors are connected to each other by the air cord, the two landing doors move at the same speed as each other. Further, since the two landing doors are connected to the first car door by the vanes, the landing door moves at the same speed as the first car door. However, the second car door moves at a different speed than the first car door and the two landing doors.

Since the landing doors are firmly connected to each other by an air cord, a single door locking device is provided. By providing the air cord, if one landing door is locked, the other landing door can be inevitably locked.

[0007]

It is preferred to use the two vane system in high performance door systems. The two-blade system is a system in which each car door is connected to a corresponding landing door by a blade. For such a method,
It is disclosed in Voser, U.S. Pat. No. 3,783,977, for a linkage using two vanes. With such a method, the landing door and the car door are properly aligned, and the door can be opened and closed smoothly. However, each landing door must be equipped with a door locking device separately. Providing two door locking devices has caused various problems such as electric wiring and maintenance problems, structural complexity, and cost.

In view of the above-mentioned drawbacks, a first technical object of the present invention is to provide a high-performance door locking device which operates smoothly with a minimum configuration.

A second technical object of the present invention is to provide a door system for a two-door sliding elevator, which uses a link mechanism and two vanes and has one door locking device. To do.

[0010]

According to the present invention, a link mechanism, first and second car doors opened and closed by the link mechanism, first and second landing doors, and a pair of vanes are provided. In order to prevent the second landing door from opening in an elevator system in which each of the vanes connects a car door and a corresponding landing door, and moves with these doors. A lock device attached to the second landing door, a pair of pulleys, and an annular air cord arranged around the pulleys, the air cord having a contact member fixed to the air cord. , So that the travel distance of the first landing door is shorter than the travel distance of the second landing door at any time within the travel except at the start and end of the travel. Take the air cord to the door And a stopper attached to the second landing door, the stopper being in contact with the contact member at the start and the end of the stroke. A door locking device for an elevator is obtained, in which the first landing door is not opened when the landing door is not opened.

Further, according to the present invention, there is provided a door locking device used together with the first and second landing doors of a two-door sliding door type elevator, each of which is provided with a vane for opening each door. Locking device for a closed door, a locking device attached to the second landing door to prevent the second landing door from opening, a pair of pulleys, and an annular ring arranged around the pulleys. The air cord having a contact member fixed to the air cord, and the movement distance of the first landing door at any time within the stroke except at the start and end of the stroke. Means for attaching the air cord to the first landing door so that the distance is shorter than the travel distance of the second landing door, and the start and end of the stroke attached to the second landing door. End And a stopper in contact with the contact member in, door locking device is obtained in an elevator, characterized in that not open the first landing door when the said second landing door by the locking device does not open.

Further, according to the present invention, in a two-door sliding door elevator having first and second car doors that operate at relatively different speeds, an air cord and the first cord attached to the air cord, A first central landing door attached to the first car door by a vane of the
A second car door that pulls the car door by a second vane, the second landing door having a stopper fitted to the air cord, and the first and the second doors attached to the air cord. A contact member that is in contact with a stopper attached to the second landing door when the second landing door is closed, and the first landing door is provided when the second landing door is locked. A two-door sliding door elevator is obtained, which is characterized by not opening.

Further, according to the present invention, it has a link mechanism, first and second car doors opened and closed by the link mechanism, first and second landing doors, and a pair of vanes,
Each of the vanes connects the car door and the corresponding landing door, and moves together with these doors, and one car door and the corresponding landing door are connected to the other of the car door and this. A locking device used in an elevator that operates at a different speed than a corresponding landing door, a locking device for locking the first landing door, and an air cord,
A stopper attached to the second landing door, which is provided on the second landing door preceding the first landing door over the entire stroke of the door and is attached to the air cord. And a contact member attached to the air cord, which is in contact with a stopper attached to the second landing door when the first and second landing doors are closed. And the second
There is provided a door locking device in an elevator, wherein the first landing door does not open when the landing door is locked.

Further, according to the present invention, it has a link mechanism, first and second car doors opened and closed by the link mechanism, first and second driven doors, and a pair of vanes, Each of the vanes connects a car door and a corresponding driven door and moves together with these doors, and one car door and the corresponding driven door correspond to the other of the car door and this. In a lock device used in an elevator that operates at a speed different from that of a driven door, a locking device for locking the first driven door, an air cord, and the first driven device throughout the stroke of the door. A stopper provided on the second driven door preceding the door and fitted in the air cord, and attached to the air cord, the first and second doors
A contact member in contact with a stopper attached to the second driven door when the driven door is closed,
There is provided a door locking device in an elevator, wherein the first driven door does not open when the second driven door is locked.

That is, according to the present invention, the door system of the two-door sliding elevator having car doors operating at relatively different speeds is attached to the air cord, and the first car is provided by the first vane. A first central landing door attached to the door and a second landing door attached to the second car door preceding the first car door by a second vane, fixed to the air cord A second landing door having a stopper fitted therein and a contact member which comes into contact with the attached stopper of the second landing door when the first and second landing doors are closed. I have it. For this reason,
The first landing door does not move when the second landing door is closed.

[0016]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows an elevator door to which the embodiment of the present invention is applied. This is the same as the conventional one. First
The car door 10 and the second car door 12 are each driven by a suitable link mechanism (not shown). At each landing (not shown), each car door is connected by a vane 14 to a first landing door 16 and a second landing door 18, respectively. Each landing door moves with its corresponding car door.

Referring to FIGS. 2 and 3, there is shown one embodiment of an elevator door system according to the present invention. In this door system, an annular air cord 20 composed of an upper run 22 and a lower run 24, a pair of pulleys 26 around which the air cord is arranged, and a door locking device (schematically shown) 28.
And the first landing door 16 to the run 2 above the air cord 20.
A well-known coupler 30 for attaching to the second 2, a stopper 32 firmly fixed to the second landing door 18, and a clamp 34 attached to the lower run 24 of the air cord 20.
And are provided. The door locking device 28 includes the latch 3
6 and a latch 38.

In FIG. 4, the stopper 32 has a plate 40 attached to the second landing door in a manner similar to the conventional one so as to be perpendicular to the second landing door. Further, the stopper is provided with an opening 42 shaped to surround the lower run of the air cord. In order to minimize noise when the clamp 34 contacts the stopper as described below, a cushioning member 44 made of an elastic polymer material is arranged in the opening. The opening and the cushioning member do not hinder the movement of the air cord fitted with the stopper.

Clamp 34 includes a first cylindrical portion 46 and a second cylindrical portion 48 that are attached to lower run 24 of air cord 20 in a conventional manner. The diameter of the second cylindrical portion contacting the stopper is larger than that of the first cylindrical portion. The diameter of the second cylindrical portion 48 is
It is larger than the diameter of the opening 42 of the stopper 32.

Next, the operation will be described.

As described above, the vanes 14 shown in FIG. 1 cause the first and second landing doors 16 and 18 to move toward and away from each other. Since the first landing door 16 is attached to the air cord 20, the operation of the air cord can be controlled by the operation of the first landing door.
The upper run 22 of the air cord moves with the first landing door. Also, the lower run 24 of the air cord moves in the opposite direction to the first landing door. The position of the clamp 34 can be controlled by actuation of the air cord. Stopper 32
Surrounds it without engaging the air cord,
The second landing door 18 moves independently of the air code.

In FIG. 3, the landing door is in a closed state. The latch 36 is engaged with the latch 38, and the clamp 34 is in contact with the stopper 32. The second landing door 18 is prevented from opening by the latch and the latch. To open this door, the clamp must be moved to the right and the first landing door 16 must be moved to the left. The clamp is moved to the right because it is connected to the lower run of the air cord. However, the clamp does not move to the right because it hits the stopper. This is because the second landing door to which the stopper is connected is locked by the latch and the latch, so that the stopper also does not move to the right.

Referring to FIG. 5, the door motion curve is shown. As is well known, the linkage has a unique geometric shape (not shown) so that one car door (and each landing door connected to it) is different from the other car door. Move at different speeds. A line 50 indicates the movement distance of the first car door 10 at each time, and a line 52 indicates the movement distance of the second car door 12 at each time. As shown in FIG. 5, the second car door precedes the first car door over the entire opening and closing of the door (that is, the stroke). In other words, the second car door has moved more distance d than the first car door at any moment in the stroke except when the door begins to open and when it completely closes. The position of the first car door is the second one at the end of the journey.
It is the same as the car door position.

The concept of the relative distance is shown by the relationship between the clamp 34 and the stopper 32. The clamp and the stopper are in contact with each other at the start and end of the stroke (see FIG. 3). The second landing door 1 within the process (see FIG. 4)
8 has moved a longer distance than the first landing door 16. As a result, the distance d between the clamp and the stopper is
(Fig. 2) There is an interval. The distance d is proportional to the difference between the moving distances of the two car doors. (Note that the clamp moves in the same direction as the stopper because the air cord and the first landing door are connected.) However, the clamp comes into contact with the stopper after each stroke. As a result, if the second landing door is locked, the first landing door is also locked.

Since the position of the door in the stroke is relatively different, it has been impossible in the past to unlock the door by linking the door system having the link mechanism and the two blades with the air cord. However, with the configuration described above, the air cord can be used to release the lock.

Although the present invention has been described with respect to particular preferred embodiments, it will be readily understood by those skilled in the art that various modifications can be made to this system without departing from the scope and basic concept of the invention. It will be something. It will be easily understood by those skilled in the art that the present invention can be applied to all door systems using doors having relatively different speed curves during operation.

[0028]

As described above, the present invention has the effect of providing a high-performance door locking device that operates smoothly with a minimum configuration.

Further, the present invention has an effect that it is possible to provide a door system of a two-door sliding door elevator, which uses a link mechanism and two vanes, and has one door locking device. ..

[Brief description of drawings]

FIG. 1 is a plan view showing an operating system of a two-blade type elevator door.

FIG. 2 is a schematic view showing the elevator door locking device according to the present invention in a first position.

FIG. 3 is a schematic view of the elevator door locking device according to the present invention in a second position.

FIG. 4 is an enlarged view of a portion indicated by 33 in FIG.

5 is a diagram showing a motion curve of the door shown in FIGS. 2 and 3. FIG.

[Explanation of symbols]

 10 First Car Door 12 Second Car Door 14 Blade 16 First Landing Door 18 Second Landing Door 20 Air Code 26 Pulley 28 Locking Device 30 Coupler 32 Stopper 34 Clamp 36 Latch 38 Latch 40 Plate 42 Opening Part 44 Cushioning member 46 First cylindrical part 48 Second cylindrical part

Claims (5)

[Claims] 1. A link mechanism, first and second car doors opened and closed by the link mechanism, first and second landing doors, and a pair of blades, each of the blades In an elevator system that connects a car door and a corresponding landing door and moves together with these doors, the elevator system is attached to the second landing door to prevent the second landing door from opening. A lock device, a pair of pulleys, an annular air cord arranged around the pulleys, the air cord having a contact member fixed to the air cord, and except at the start and end of a stroke Means for attaching the air cord to the first landing door so that the movement distance of the first landing door becomes shorter than the movement distance of the second landing door at any time in the stroke. And the second A stopper attached to the landing door of the vehicle, the stopper coming into contact with the contact member at the start and the end of the stroke, and the first landing door when the second landing door is not opened by the locking device. Door lock device for elevators, characterized by not opening the landing door of the car. 2. A door locking device for use with first and second landing doors of a two-door sliding door elevator, wherein the door locking device is provided with vanes for opening each door separately. A lock device attached to the second landing door to prevent the second landing door from opening, a pair of pulleys, and an annular air cord arranged around the pulleys. The air cord having a contact member fixed to the air cord, and the movement distance of the first landing door at the second landing at any time within the stroke except at the start and end of the stroke. A means for attaching the air cord to the first landing door so as to be shorter than a moving distance of the door, and a means attached to the second landing door for contacting at the start and end of the stroke. And a stopper that contacts the timber, door locking device in an elevator, characterized in that not open the first landing door when the said second landing door is not opened by the locking device. 3. A two-door sliding door elevator having first and second car doors operating at relatively different speeds, an air cord and a first vane attached to the air cord. A first central landing door attached to the car door and a stopper attached to the second car door pulling the first car door by a second vane and fitted to the air cord. A second landing door; and a contact member attached to the air cord and contacting a stopper attached to the second landing door when the first and second landing doors are closed. , The first landing door when the second landing door is locked
A two-door double-door elevator that does not open the landing door. 4. A link mechanism, first and second car doors opened and closed by the link mechanism, first and second landing doors, and a pair of vanes, each of the vanes being provided. , The car door and the corresponding landing door are connected and move together with these doors, and one of the car doors and the corresponding landing door is the other of the car doors and the corresponding landing door. A lock device used in an elevator that operates at different speeds, comprising: a lock device for locking the first landing door, an air cord, and a stopper attached to the second landing door, A stopper provided on the second landing door that precedes the first landing door over the entire stroke of, and fitted to the air cord, and a contact member attached to the air cord, 1st and 2nd When the landing door is closed, and a contact member in contact with the stopper attached to the second landing door, said when the second landing door is locked first
Door locking device in an elevator, characterized in that the landing door of the car does not open. 5. A link mechanism, first and second car doors opened and closed by the link mechanism, first and second driven doors, and a pair of vanes, each of the vanes being provided. , A car door and a corresponding driven door are connected and move together with these doors, and one car door and the corresponding driven door are different in speed from the other car door and the corresponding driven door. A lock device used in an elevator that operates in accordance with claim 1, wherein a lock device for locking the first driven door, an air cord, and the first driven door that precedes the first driven door over the entire stroke of the door are provided. And a stopper attached to the air cord and attached to the air cord, and attached to the second driven door when the first and second driven doors are closed. Contact member in contact with the stopper And a door locking device in an elevator, wherein the first driven door does not open when the second driven door is locked.