JP2002302365A - Elevator door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open both doors in linkage even when a trouble occurs in a linkage mechanism for a main door and a sub-door constituting a landing door for an elevator. SOLUTION: An engaging element 19 protruding to the side of the sub-door 5 is provided at the rear end of the main door 4 and a rear protruding element 18 protruding to the side of the main door 4 is provided at the rear end of the sub-door 5. In a normal condition, when the main door 4 is moved to the direction of an arrowmark A, the sub-door 5 is driven to the same direction by the linkage mechanism (not illustrated). When a trouble occurs in the linkage mechanism, the sub-door 5 is not driven following the main door 4 but, if the engaging element 19 engages the rear protruding element 18 with the movement of the main door 4, the sub-door 5 is driven to the same direction as that of the main door 4 and opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device for opening and closing a landing entrance of an elevator.

[0002]

2. Description of the Related Art FIG.
6 is a cross-sectional plan view of a landing door showing a conventional elevator door device disclosed in Japanese Patent Publication No. 6 when the door is closed. When the elevator car 21 is not stopped at this landing, the landing entrance 3 is closed by the main door 4 and the slave door 5, as shown in FIG. When the car 21 arrives at this landing, a car door (not shown) moves in the direction of arrow A, and the main door 4 also moves in the direction of arrow A in conjunction with the movement. Then, the slave door 5 is interlocked with the main door 4 via an interlocking mechanism (not shown), and the landing entrance 3 is opened.

When the car door moves in the direction of arrow B after the passengers get on and off, the main door 4 and the sub door 5 also move in conjunction therewith, and the landing entrance 3 is closed. If the interlocking mechanism is obstructed when the landing entrance 3 is opened, the slave door 5 does not interlock with the movement of the main door 4, but when the main door 4 moves about its width dimension, the main door 4 moves. The projection 19a of the engaging element 19 fixed to the rear end of the front door 5 engages with the projection 17a of the front projection 17 fixed to the front end of the slave door 5. Since then
By this engagement, the slave door 5 is driven in conjunction with the main door 4, and the landing entrance 3 is closed.

At this time, the slave door 5 comes into contact with a cover 20 having a stopper function provided on the ceiling of the landing entrance 3 and stops. t is a clearance between the cover 20 and the slave door 5 at the time of a normal stop, and is a stop difference of the slave door 5. In this manner, the slave door 5 is prevented from being left at the door pocket position as shown by the dashed line due to the failure of the interlocking mechanism.

[0005]

In the conventional elevator door apparatus as described above, if the interlocking mechanism is obstructed when the door is open, the main door 4 is engaged by the engagement of the engagement member 19 and the front projection 17. When the main door 4 moves in the door opening direction when the interlocking mechanism is disturbed in the closed state, the sub door 5 does not interlock with the main door 4 because the interlock mechanism is interlocked. , Remains at the door open position. Therefore, the opening width of the landing doorway 3 becomes narrow, which causes inconvenience in getting on and off the passenger, and the inner surface of the slave door 5 may come into contact with the passenger, and there is a possibility that dirt and dust may adhere to clothes. There is.

In addition, when the engagement between the engagement element 19 and the front projection 17 is large, and an abnormality is detected by using the load fluctuation of the main door 4, an erroneous detection is caused. . In addition, there is a problem that a gap dimension t is generated between the slave door 5 and the cover 20 at the door closing position, so that the child is subject to mischief.

The present invention has been made in order to solve the above-mentioned problem, and even if the interlocking mechanism between the main door 4 and the sub door 5 is obstructed, the doors 4 and 5 can be interlocked to open. It is an object of the present invention to provide an elevator door device capable of preventing a slave door 4 from being movable by a gap t in a door closed position.

[0008]

According to a first aspect of the present invention, a door device for an elevator is provided with a rear protruding member protruding toward a main door at a rear end side of a slave door, and protruding toward the door side with the main door. When the main door moves in a direction to open the landing entrance when the interlocking mechanism is not functioning, the engaging element engages with the rear projecting element.

Further, in the elevator door apparatus according to the second aspect of the present invention, a front protruding member protruding toward the main door is provided at the front end side of the slave door, and an engaging element and a spring protruding toward the main door side are provided. Provided,
When the main door moves in a direction to close the landing entrance when the interlocking mechanism is not functioning, the engaging element engages with the front protruding element and the spring presses the front protruding element in the moving direction of the main door. It is.

In the elevator door apparatus according to a third aspect of the present invention, an engaging element and a spring are provided at a rear edge portion of the main door so as to pass through a gap between the main door and the sub door and extend into the sub door. When the main door moves in the direction to close the landing entrance when the interlocking mechanism is not functioning, the engaging element engages with the inside of the front edge of the slave door, and the spring presses the inside of the front edge in the moving direction of the main door. It is like that.

A door device for an elevator according to a fourth invention is the elevator door device according to the first to third inventions, wherein when the main door is moved from the fully open position or the fully closed position by the width of the main door, the main door and the slave door are moved. Are provided so that the engaging elements are engaged.

The elevator door apparatus according to a fifth aspect of the present invention includes a main door and a plurality of slave doors, wherein the engagement element according to the first invention or the engagement element and the spring according to the second or third aspect are connected to each other. It is provided on the slave doors other than the last slave door and on the main door.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1. FIGS. 1 to 4 show one embodiment of the first and fourth inventions of the present invention, and FIG. 1 is a plan sectional view when a landing door is closed. , FIG. 2 is a plan sectional view of the landing door when the door is opened, FIG. 3 is an enlarged view of the portion of FIG. 2 viewed from the direction of arrow II, and FIG. 4 is a front view of the landing door when the door is closed, viewed from the hoistway side. In the drawings, the same reference numerals indicate the same parts. (The same applies to the following embodiments.)

In the figure, 1 is an elevator hoistway,
2 is a landing wall, 3 is a landing entrance formed on the landing wall 2, 4
Is a main door of a landing door that opens and closes the landing entrance 3, 5 is a slave door that opens and closes by an interlocking mechanism (described later) with the main door 1, 6 is a main door 4
A door hanger 7 is fixed to the upper end of the door 5. A door hanger 7 is fixed to the upper end of the slave door 5, and hanger rollers 8 and 9 are provided respectively. Reference numeral 10 denotes a door rail fixed above the landing entrance 3 and on which hanger rollers 8 and 9 roll.

Reference numeral 11 denotes an interlocking mechanism of the main door 4 and the sub door 5, which is fixed to the door hanger 7 of the sub door 5 and protrudes above the main door 4, and pulleys 13 and 13 provided at both ends thereof. A rope 14 wound around the pulleys 13 and 13 endlessly.
Consists of And the upper part of the rope 14
The lower part of the rope 14 is fixed to a part 15 of the landing wall 2, and the lower part of the rope 14 is fixed to a door hanger 6 of the main door 4.

Reference numeral 17 denotes an L-shaped front protrusion fixed to the front edge of the door hanger 7 of the slave door 5, and a protrusion 17 a corresponding to the bottom of the L-shape protrudes toward the main door 4. Reference numeral 18 denotes an L-shaped rear protrusion fixed to the rear edge of the door hanger 7.
A protruding portion 18a corresponding to the bottom of the character protrudes toward the main door 4 side. Reference numeral 19 denotes an L-shaped engaging element fixed to the rear edge of the door hanger 6 of the main door 4, and a protrusion 19 corresponding to the bottom of the L-shape.
a protrudes to the slave door 5 side. The protrusion 19a of the engagement element 19 is dimensioned so as to engage with the projection 17a of the front projection 17 and the projection 18a of the rear projection 18.

Reference numeral 20 denotes a cover having a stopper function to stop the ceiling and stop the slave door 5 when the door is abnormal, and 21 denotes an elevator car. Next, the operation of this embodiment will be described. (1) Normal state Assuming that the car 21 is not stopped at this landing, the main door 4 and the sub door 5 are in the door closed position as shown in FIG.
The landing entrance 3 is closed. At this time, the projection 19a of the engagement element 19 of the main door 4 is located inside the projection 17a of the front projection 17 of the slave door 5. Here, when the car 21 arrives at this landing, a car door (not shown) is indicated by an arrow A.
Move in the direction. At this time, the main door 4 of the landing door is gripped by the car door (details are omitted) and moves in the direction of arrow A.

When the main door 4 moves, the rope 12 also moves in the same direction by the same distance, and the rope 12 rotates the pulleys 13 by this movement. On the other hand, the upper part of the rope 12 is fixed to the part 15 of the landing wall 2,
When the rope 12 moves, the slave door 5 itself is driven at half speed in the same direction as the main door 4 via the interlocking mechanism 11 with the upper fixed point as a fulcrum. When the main door 4 and the sub door 5 move to the door open position, the landing doorway 3 is opened as shown in FIG.

When the passengers get on and off, the car door turns to arrow B
The main door 4 of the landing door also moves in the direction of arrow B
Move in the direction. Then, the slave door 5 is driven in conjunction with the main door 4 by an operation reverse to the opening operation, and the landing entrance 3 is closed as shown in FIG. (2) Abnormal state In the state where the interlocking mechanism 11 between the main door 4 and the sub door 5 has been hindered (for example, the rope 12 has been cut) and the interlock between the two doors 4 and 5 has been separated, as shown in FIG. The landing doorway 3 has two doors 4,
5 is closed.

When the car 21 arrives and the car door moves in the direction of arrow A, the main door 4 also moves in the direction of arrow A.
When the main door 4 comes to its width dimension, that is, a position almost half of the total movement distance, the protruding portion 19a of the engaging member 19 engages with the protruding portion 18a of the rear protruding member 18 of the slave door 5. Thereafter, the slave door 5 is driven in conjunction with the main door 4 by this engagement, and the landing entrance 3 is opened as shown in FIG. In addition, when the interlocking mechanism 11 of the doors 4 and 5 has a trouble, when the door closing operation is performed from the position where the landing entrance 3 is opened as shown in FIG.

That is, when the main door 4 gripped by the car door moves in the direction of the arrow B and comes to a position almost half of the total moving distance, the protruding portion 19a of the engaging portion 19 projects Child 1
7, the slave door 5 is driven in conjunction with the main door 4, and the landing entrance 3 is closed as shown in FIG. In this manner, the main door 4 is provided with the engagement element 19, and the sub door 5 is provided with the front and rear projections 17, 18, and the interlocking mechanism 1 is provided.
When the first door 1 is disturbed, the engaging element 19 is engaged with the front or rear projecting elements 17, 18, so that the slave door 5 is
It is driven in conjunction with.

Therefore, even if the interlocking mechanism 11 is disturbed, the landing doorway 3 is fully opened and closed by the two doors 4 and 5, so that the problem that the slave door 5 remains can be prevented. Further, when the door is fully opened, the door 5 remains and the landing entrance 3 is narrowed, and the inside of the door 5 contacts the passenger, so that it is possible to prevent dust, dirt, and the like from soiling the clothes. .

Embodiment 2 FIG. FIG. 5 is an enlarged perspective view of an engaging portion showing one embodiment of the second invention of the present invention. In the figure, reference numeral 23 denotes a pedestal fixed to the door hanger 6;
Reference numeral 25 denotes a shaft disposed horizontally and slidably supported by the receiving base 23. Reference numeral 25 denotes an engaging member fixed to one end of the shaft 24 and protruding toward the slave door 5, and is engaged with the projecting portion 17a of the front projecting member 17. It is formed to be compatible. Reference numeral 26 denotes a compression coil spring which is fitted on the shaft 24 and applies a force to the shaft 24 in the direction of arrow B.

When the interlocking mechanism 11 between the main door 4 and the sub door 5 is disturbed, the main door 4 moves from the open position in the direction of arrow B. When the main door 4 comes to a position almost half of the total moving distance, the engaging element 25 engages with the protruding portion 17a of the front protruding element 17 of the sub door 5, and the sub door 5 is driven by the main door 4. The landing entrance 3 is closed. Since the position of the front protrusion 17 is set at the stop position of the slave door 5 at the time of normal operation, the front protrusion 17 is located between the slave door 5 stopped at the time of abnormality and the cover 20 having the stopper function as described above. In general, a gap size t of about 1 cm is generated.

However, when the main door 4 and the sub door 5 are moving due to the engagement between the engagement element 25 and the front projection 17, the spring 2
6 is in a compressed state. For this reason, when the main door 4 stops at the fully closed position, the engaging element 25 presses the protruding portion 17a of the front protruding element 17 with the restoring force of the spring 26, so that the sub door 5 moves until it comes into contact with the cover 20. Then, it is stopped and pressed and fixed to the cover 20 as it is.

In this manner, the slave door 5 is pressed and fixed to the cover 20, so that even if a child touches the slave door 5 by mischief, the slave door 5 does not move. Further, since the impact is absorbed by the spring 24, the reaction force of the slave door 5 to the main door 4 is small. Therefore, it is possible to prevent a problem that occurs when an abnormality is detected using the load fluctuation of the main door 4 in the related art, for example, when the person is erroneously detected as being closed to the door, the door is repeatedly opened and closed.

Embodiment 3 6 to 9 are views showing an embodiment of the third invention of the present invention. FIG. 6 is a plan sectional view when the landing door is closed, and FIG. 7 is a view of the part of FIG. 6 viewed from the direction of arrow VII. 8 is an enlarged sectional view of the landing door when the landing door is opened, and FIG. 9 is an enlarged view of the portion of FIG. 8 viewed from the direction of arrow IX.

In the drawing, reference numeral 28 denotes a receiving base fixed below the main door 4, which supports the shaft 24 similarly to the second embodiment.
A compression coil spring 26 is fitted. Reference numeral 29 denotes a bent plate fixed to the tip of the shaft 24, a part of which is bent and extends into the slave door 5 through the gap between the main door 4 and the slave door 5. Reference numeral 30 denotes an engaging element fixed to the tip of the bending plate 29. The operation of this embodiment is basically the same as that of the first and second embodiments, and therefore, only the differences will be described.

The spring 26 is compressed and the engaging element 30 is
Because it is assembled to press the inside of the front edge of
The interlocking mechanism 11 between the main door 4 and the sub door 5 is disturbed, and the sub door 5
6 and 7, the restoring force of the spring 26 causes the engaging element 30 to press and fix the slave door 5 in the direction of the arrow B, even if the stop position moves by the clearance t in the direction of the arrow A. When the door is opened, when the main door 1 moves in the direction of arrow A, the engaging element 30 presses the inside of the rear edge of the slave door 5, and the landing entrance 3 is opened as shown in FIGS. At this time, the rear end of the main door 4 is stored in the concave portion of the bending plate 29.

When the main door 4 moves in the direction of arrow A,
The bent plate 29 may be pushed by the outer edge C of the rear edge of the main door 4, or may be pushed by the end of the receiving stand 28. Further, although the engaging element 30 has a plate shape, a pin, a rod, a knob, or the like fixed to the bending plate 29 may be used. In this way, since the bending plate 29 and the engaging element 30 fixed to the movable plate and moving inside the slave door 5 are used, the slave door 5 is securely engaged with the slave door 5 when the main door 4 moves in both directions.

Embodiment 4 FIG. FIG. 10 is a plan sectional view of a landing door showing a fifth embodiment of the present invention when the door is closed. This embodiment is applied to a case where a landing door is formed by a main door 4 and a plurality of (three in the figure) slave doors 5A and 5B. The main door 4 and the sub door 5A have the third embodiment.
Are provided with a shaft 24, a compression coil spring 26, a pedestal 28, a bent plate 29, and an engaging element 30 indicated by. Those are not provided in the slave door 5B. It is also possible to use the engaging element 19 and the front and rear projecting elements 17 and 18 shown in FIGS. 1 to 3 or the receiving base 23, the shaft 24, the engaging element 25 and the compression coil spring 26 shown in FIG.

The operation of this embodiment can be easily understood from the above-described embodiment, and a detailed description will be omitted.
In this manner, the present invention can be applied to the main door 4 and the multi-plate slave doors 5A and 5B, and secures the slave doors 5A and 5B when fully closed and stores the doors 4, 5A and 5B when fully opened. It becomes possible to.

[0033]

As described above, according to the first aspect of the present invention, a rear protruding member protruding toward the main door is provided at the rear end side of the slave door, and an engaging member protruding toward the door is provided on the main door. When the main door moves in the direction to open the landing doorway when the interlocking mechanism is not functioning, the engaging element engages with the rear protrusion, so that when the interlocking mechanism fails, the door remains, and the opening of the landing doorway opens. It is possible to prevent the width from being reduced, and prevent a passenger from coming into contact with the inner surface of the slave door and dust and dust from adhering to clothes.

Further, in the second invention, a front protruding member protruding toward the main door is provided at the front end side of the slave door, an engaging element protruding toward the door side with the main door is provided, and a spring is provided. When the main door moves in the direction of closing the landing doorway during the function, the engaging element engages with the front protruding element, and the front protruding element is pressed by the spring in the moving direction of the main door. Even if the slave door is touched, the slave door can be prevented from moving. In addition, the impact at the time of engagement between the engaging element and the front protrusion is absorbed by a spring,
The reaction force of the slave door to the main door can be reduced.

According to the third aspect of the present invention, an engaging element and a spring are provided at the rear edge of the main door so as to pass through the gap between the main door and the sub door and extend into the sub door, so that when the interlocking mechanism is not functioning, When the main door moves in the direction of closing the landing entrance, the engaging element engages with the inside of the front edge of the slave door, and the inside of the front edge is pressed by a spring in the moving direction of the main door. When the door is closed, the slave door can be fixed in the same manner as in the second invention, and the main door can be stored at a predetermined position without any trouble when the door is fully opened.

According to the fourth aspect of the present invention, when the main door is moved from the fully open position or the fully closed position by the width of the main door, the engaging element is provided so that the main door and the sub door are engaged. It is possible to select an optimum engagement position between the main door and the sub door when a trouble occurs.

In the fifth invention, the main door and the plurality of sub doors are arranged, and the engaging element or the engaging element and the spring are provided on the sub door and the main door other than the last sub door among the sub doors. Even in a door device having a plurality of doors, it is possible to securely fix the slave door when fully closed and to store each door when fully closed.

[Brief description of the drawings]

FIG. 1 is a plan cross-sectional view of a landing door showing a first embodiment of the present invention when the door is closed.

FIG. 2 is a plan sectional view of the landing door showing the first embodiment of the present invention when the door is opened.

FIG. 3 is an enlarged view of the part of FIG. 2 viewed from the direction of arrow II.

FIG. 4 is a front view of the landing door according to the first embodiment of the present invention, when the landing door is closed, as viewed from the hoistway side.

FIG. 5 is an enlarged perspective view of an engagement portion according to the second embodiment of the present invention.

FIG. 6 is a plan sectional view of the landing door showing the third embodiment of the present invention when the door is closed.

FIG. 7 is an enlarged view of the portion of FIG. 6 viewed from the direction of arrow VII.

FIG. 8 is a plan sectional view of the landing door showing the third embodiment of the present invention when the door is opened.

FIG. 9 is an enlarged view of the portion of FIG. 8 viewed from the direction of arrow IX.

FIG. 10 is a plan sectional view of a landing door showing a fourth embodiment of the present invention when the door is closed.

FIG. 11 is a plan sectional view showing a conventional elevator door device when a landing door is closed.

[Explanation of symbols]

3 landing doorway, 4 main door, 5, 5A, 5B slave door, 11 interlocking mechanism, 17 front projection, 18 rear projection, 19 engagement element, 24 axis, 25 engagement element, 29 bent plate, 30 engagement element.

Claims (5)

[Claims] 1. A main door which moves in parallel to a landing entrance and a slave door which is provided in parallel with the main door and which is driven by the main door via an interlocking mechanism, wherein the main door and the slave door are provided. In the device for opening and closing the landing doorway, a rear protruding member provided at the rear end side of the slave door and projecting toward the main door, and provided on the main door and projecting toward the slave door, An elevator that engages with the rear projection when the main door moves in a direction to open the landing entrance when not functioning. 2. A main door which moves in parallel to a landing entrance and a slave door which is arranged in parallel with the main door and which is driven by the main door via an interlocking mechanism. In the apparatus for opening and closing the landing doorway, a front protruding member provided on the front end side of the slave door and protruding toward the main door, and provided on the main door and protruding toward the slave door, the interlocking mechanism When the main door moves in the non-functioning direction to close the landing doorway, the engaging element engages with the front projecting element, and when the engaging element engages with the front projecting element, the front projecting element is engaged. And a spring for pressing the main door in the moving direction of the main door. 3. A main door which moves in parallel to a landing entrance and a sub door which is provided in parallel with the main door and which is driven by the main door via an interlocking mechanism. In the apparatus for opening and closing the landing doorway, the rear door is provided at the rear edge of the main door, passes through the gap between the main door and the slave door, extends inside the slave door, and the non-function of the interlocking mechanism Sometimes, when the main door moves in the direction to close the landing doorway, an engaging element that engages with the inside of the front edge of the slave door, and a front edge of the slave door when the engaging element engages with the slave door. A door device for an elevator, comprising: a spring pressing an inner side in a moving direction of the main door. 4. The engaging element engages with a front protruding element of the slave door when the main door moves about the width of the main door from the fully open position, or engages with the inside of the front edge of the slave door. When the main door is moved from the fully closed position by about the width of the main door, the main door is engaged with the rear protrusion of the slave door or is installed at a position where it engages with the inside of the rear edge of the slave door. A door device for an elevator according to any one of claims 1 to 3, characterized in that: 5. A main door and a plurality of sub-doors are provided, and the engaging element according to claim 1 is provided on the sub-doors other than the last sub-door among the sub-doors and the main door, and projects forward. A slave is provided for each of the slave doors, or the engaging member and the spring according to claim 2 or 3 are provided for the slave doors other than the last slave door of the slave doors and the main door. Elevator door device.