JPS6222914B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator door device, and more particularly to an engagement device for engaging a car door and a landing door.

1 and 2 show a conventional elevator door device. In the figures, 1 is an elevator car, 2 is an entrance provided on one side of the car 1, and 3 is an entrance on the top of the car 1. installed drive machine,
4 is a distance piece 4 near the top of the entrance 2.
A door rail is appropriately fixed via a, and 5 is a hanging wheel 5a, 5a guided and supported by this door rail 4.
A door hanger 6 is suspended at its upper end by the door hanger 5, and its lower end consists of a sliding door that opens and closes the doorway 2 guided by a groove provided in the floor (not shown) of the car 1. One end of the car door 7 is connected to the drive machine 3, and the other end is connected to the car door 6.
8 is an engagement device attached to the door hanger 5;
~8e, 8j~8l, 8n, 8r, 8t and 8
It is composed of t ₁ . That is, 8a is a fixed plate consisting of a long column with an L-shaped cross section, one side of which stands upright against the car door 6, and the other side of which extends in the direction in which the car door 6 is fully closed. It is fixed to the door hanger 5 via the piece 8b. 8c and 8d are shafts installed on the door hanger 5 side surface of the fixed plate 8a, 8e is an actuating piece made of a band-shaped member and pivotally connected to the fixed plate 8a via the shaft 8c, and 8j is an actuating piece. A roller 8k is pivotally connected to the fully closed end of the roller 8e, and a connecting piece 8k is a band-shaped member, and a connecting piece 8 is pivotally connected to the fixed plate 8a via a shaft 8d.
n is a movable plate consisting of a long column with an L-shaped cross section, and is provided on the fully open side of the car door 6 with respect to the fixed plate 8a, with one side standing upright to the side of the car door 6, and the fixed plate 8n facing each other with a gap and being parallel to each other, with the other side extending in the direction in which the car door 6 is fully opened,
The operating piece 8e and the connecting piece 8k are parallel to each other so that the upper part is pivotally connected to the operating piece 8e, and the lower part is pivotally connected to the connecting piece 8k. Reference numeral 8r denotes a biasing body made of a coiled spring, one end of which is locked to the end of the actuation piece 8e on the movable plate 8n side, and the other end of which is locked to the door hanger 5 and tensioned. This acts to always narrow the gap formed by the movable plate 8n and the movable plate 8n. 8t is a cam fixed to the car 1, and from when the car door 6 is closed to the position immediately before fully closed, even after the car door 6 is fully closed, the lower surface _8t1 continuously pushes the roller 8j against the urging member 8r. It is arranged so that it can be pushed down. 9 is landing door 9a
The fixed plate 8a and the movable plate 8 of the engagement device 8
This is an engaged body inserted between n and n.

In the elevator door device configured as described above, when the car door 6 is fully closed, the roller 8j is pressed down by the cam 8t, and the movable plate 8n is pushed down by the biasing member 8.
It is in a raised position against the urging force of r. Therefore, the distance between the fixed plate 8a and the movable plate 8n is widened, and a gap is formed between the fixed plate 8a and the movable plate 8n. Therefore, the engaging device 8 and the engaged body 9 are not engaged.

Next, when opening the car door 6, the car door 6 is opened by the driver 3, and when the roller 8j separates from the cam 8t, the actuating piece 8e moves against the shaft 8c due to the urging force of the urging member 8r. In the center, there is also a connecting piece 8k
are rotated counterclockwise in FIG. 1, respectively, about the axis 8d. As a result, the engaged body 9 is held between the fixed plate 8a and the movable plate 8n. The car door 6 and the landing door 9a are engaged through such engagement between the engagement device 8 and the engaged body 9. In this state, the car door 6 and the landing door 9a (hereinafter referred to as the car door 6, etc.) are opened. Even after the car door 6 is fully opened, the engagement between the car door 6 and the landing door 9a is maintained.

Next, when the fully opened car door 6 etc. is to be closed, when the drive unit 3 is rotated counterclockwise in FIG. 1, the car door 6 is driven in the closing direction via the drive arm 7, and The door 9a also engages with the car door 6 and closes. When the roller 8j is closed just before fully closed,
engages with the lower surface _8t1 of the cam 8t, the operating piece 8e rotates clockwise in FIG. The distance between the movable plate 8a and the movable plate 8n is widened, and the car door 6 and the landing door 9a are disengaged and are fully closed.

However, even when the door is closing, especially immediately after the door has started closing, or if it is still in the first half of the door closing, the passenger may try to get on car 1 and try to get into the landing door 9.
It may collide with a. In this case, only the landing door is temporarily prevented from closing. That is, since the movement of the engaged body 9 is restrained and it comes to a stopped state, a force in the door opening direction is applied to the movable plate 8n, and the actuating piece 8e and the connecting piece 8k are disposed against the biasing force of the biasing body 8r. The state becomes horizontal, and the gap between the fixed plate 8a and the movable plate 8n is widened to the maximum. For this reason, landing door 9
a is displaced relative to the car door 6. and,
A large gap is created between the fixed plate 8a and the engaged body 9. At this time, when the blocking condition of the landing door 9a is removed, the engaged body 9 is moved by the door closing force of the driving machine 3 and the movable plate 8n.
In order to simultaneously receive the biasing force of the biasing body 8r acting on the car door 9a, the landing door 9a is closed at a speed higher than that of the car door 6. Then, when the landing door 9a is about to go ahead of the car door 6, the engaged body 9
It collides with the object and makes a collision sound. Further, the engaged body 9 reverses or decelerates due to the reaction of the collision, so that it also collides with the movable plate 8n. Since the landing door 9a repeats such relative displacement with respect to the car door 6 several times, there is a problem in that the door cannot be closed smoothly.

The present invention solves the above-mentioned problems, and includes a fixed plate, a movable plate supported with a gap between the fixed plate and the fixed plate, and a device that reversibly displaces the movable plate to narrow or widen the gap. An elevator door device comprising an engaging device having a biasing body and an operating piece, and an engaged body disposed in the gap formed by the fixed plate and the movable plate of the engaging device. During operation, a locking device is provided to restrict the movement of the movable plate in order to prevent the width of the gap from widening, and to prevent a large gap from forming between the engaging device and the engaged body, To provide an elevator door device capable of preventing relative displacement even if a landing door or a car door is temporarily blocked from opening/closing, and performing quiet and smooth door opening/closing operations.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

The engaging device and the engaged body in this embodiment are the same as those in the conventional example described above, with the addition of a locking device shown below. That is, in the figure, 10 is a locking device attached to the door hanger 5, and is constituted by the following 10a to 10l. That is, 10a is a shaft installed in the door hanger 5, and is arranged slightly on the fully closed side with respect to the position of the straight line hanging from the shaft 8c. That is, the shaft 10a is provided near the shaft 8c. 10b is a dogleg-shaped link with a semicircular tip end 10c, and a roller support portion 1.
0d, and the shaft 10 at the bent portion 10e.
It is pivoted to a. 10f is the roller support part 10
10g is a roller pivotally attached to the shaft 10f, 10h is a pin installed on the roller support portion 10d, 10i is a stopper provided on the door hanger 5, and 10j is a door hanger. 5 is implanted pin, 10k is pin 10h and pin 10j
A biasing body made of a tension coil spring tensioned between the shaft 10b and the shaft 10a constantly applies a biasing force clockwise in FIG. 3 about the shaft 10a to the link 10b. 10l is a cam fixed to the car 1, and is designed to engage the roller 10g when the car door 6 is slightly fully open from the position where the roller 8j engages the cam 8t just before the car door 6 is fully closed. It is arranged.

In the elevator door device configured as described above, when the car door 6 is fully closed, the roller 10g rides on the cam 10l as shown in FIG. 3, and the link 10b moves counterclockwise in FIG. , lowers the thrust head 10c, and lowers the actuating piece 8e.
It is located where it will not interfere with the

Next, when the car door 6 opens, first the roller 8
j begins to separate from the cam 8t, the actuating piece 8e rotates about the shaft 8c in the direction shown by arrow A in FIG. 3 due to the urging force of the urging member 8r, and the movable plate 8n moves in the direction of the fixed plate 8a. to narrow the gap, and the engaging body 9
The car door 6 and the landing door 9a engage with each other while holding the car door 6 between them.
Further, the link 10b rotates around the shaft 10a, as shown by arrow B in FIG. 3, a little later than the operating piece 8e due to the urging force of the urging member 10k, and stops when it hits the stopper 10i. That is, the fourth
The result will be as shown in the figure. At this time, the collision head 10c
faces the actuating piece 8e with a slight gap G in between, as shown in FIG.

The point at which the ram 10c faces the actuating piece 8e is a straight line m connecting the center of the shaft 8c and the center of the pivot portion of the roller 8j, as shown in FIG. They are arranged so that a straight line n connecting the centers makes a substantially right angle to each other. Below, it is fully opened in the above state, and even after it is fully opened,
The above state is maintained.

Next, when the fully opened car door 6 closes, first,
Fully open state, that is, as mentioned above, the 4th
The state shown in the figure is maintained and the valve is closed until just before it is fully closed. Immediately before fully closing, roller 10g first touches cam 1.
0l and move link 10b to arrow D in Figure 4.
Rotate in the direction shown to lower the ramming head 10c.
A little later than the roller 10g, the roller 8j is pushed by the lower surface _8t1 of the cam 8t and moves the actuating piece 8e to the fourth position.
Rotate in the direction shown by arrow C in the figure. In this way, the car door 6 is fully closed while avoiding interference between the operating piece 8e and the link 10b. That is, the state shown in FIG. 3 is reached. At this time, the car door 6 and the landing door 9a are disengaged, as described in the above conventional example.

In the above embodiment, when a door closing prevention condition is applied only to the landing door 9a due to a passenger collision or the like when the door is closed, that is, when a force in the door opening direction is applied from the engaging body 9 to the movable plate 8n, The actuating piece 8e tries to rotate about the shaft 8c in the direction shown by the arrow C in Fig. 4, but the actuating piece 8e moves by the gap G shown in Fig. 4 and immediately collides with the ramming head 10c. and stop. Therefore, even if a passenger collides with the landing door 9a during the door closing operation, the gap between the fixed plate 8a and the movable plate 8n will hardly widen and the engaging body 9 will remain firmly clamped. The landing door 9a will not be displaced relative to the car door 6. Therefore, since there is no collision noise caused by the engaged body 9, fixed plate 8a, and movable plate 8n, a quiet and smooth door closing operation can be achieved.

Further, the car door 6 is pushed downward by the reaction force of the biasing body 8r from just before the fully closed position when the roller 8j and the cam 8t engage to when fully closed, but due to the engagement between the roller 10g and the cam 10l. Since the reaction force of the biasing body 10k acts to push the car door 6 upward, the respective reaction forces act to cancel each other out. In addition, in the above embodiment, the shaft 10a is arranged slightly on the fully closed side with respect to the shaft 8c, but since it is sufficiently close to the mounting width of the hanging wheels 5a, 5a, the urging member The rotational moments due to the reaction forces of 8r and 10k can be ignored. Therefore, if the biasing forces of the biasing bodies 8r and 10k are appropriately selected, the loads applied to each of the suspension wheels 5a, 5a can be equalized, so that only one of the suspension wheels 5a will wear out quickly. There is no such thing.

In the above embodiment, the movable plate 8n is disposed on the fully open side compared to the fixed plate 8a, but even if it is disposed on the fully closed side, it operates in the same manner as in the above embodiment. .

Further, in the above embodiment, the engaging device 8 is provided on the car door 6 and the engaged object 9 is provided on the landing door 9a, but conversely, the engaging device 8 is provided on the landing door 9a and the engaged object 9 is provided on the landing door 9a.
Even if it is provided in the car door 6, it functions similarly to the above embodiment.

Furthermore, although the link 10b of the locking device faces the actuating piece 8e to prevent movement of the actuating piece 8e, the member that the protrusion 10c of the link 10b faces is not limited to the actuating piece 8e. Piece 8
e. Other displaceable members constituting the engagement device 8, such as the connecting piece 8k, may also be used.

This invention provides a locking member that prevents a movable plate for interlocking the car door and the landing door from performing a disengagement operation of separating from the engaged object when the car door and the landing door are opening and closing. During the opening/closing operation of the door, this locking member is displaced by the force, and its protrusion is always kept in contact with the displacement member (actuating piece) of the engagement device.
(such as a movable plate). Therefore, since there is no relative displacement between the landing door and the car door, smooth door opening/closing operations can be performed, and at the same time, the engagement device and the engaged object that are generated due to the relative displacement can be Since there is no collision noise, the door can be opened and closed quietly.

[Brief explanation of the drawing]

1 and 2 show a conventional elevator door device, FIG. 1 is a front view of its essential parts, FIG. 2 is a cross-sectional view of FIG. 1, and FIGS. 3 and 4 are according to the invention. FIG. 2 is a detailed front view of main parts showing one embodiment of the invention. In the figure, 6 is a car door, 8 is an engagement device, 8a
8e is a fixed plate, 8e is an operating piece, 8k is a connecting piece, 8n is a movable plate, 8r is a biasing member, 9 is an engaged member, 9a is a landing door, and 10 is a locking device. Note that the same numbers in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A car door and a landing door that open and close in conjunction with each other when the car is located at the entrance of the hoistway;
It is provided on one of these doors so that it can be displaced so as to engage with an engaged object attached to the other door, and is constantly applied with an elastic biasing force in the direction of the engagement operation. an engagement device having a movable plate, and when the car corresponds to the entrance/exit, the movable plate is displaced by opening and closing of the one door, and the engaged body and the engagement device are disposed. In a door device that engages to open and close the car door and the landing door together, the movable plate is displaceably attached to one of the doors and faces the displaceable member of the engagement device. a lock member having a protrusion that prevents the movable plate from displacing in the disengagement direction during engagement with the engaged body; a member that is connected to the lock member and causes the protrusion to displace; a biasing body that applies a biasing force so as to be displaced to a position facing the door, and continuously performs this applying operation during the opening/closing movement of the one door; a cam that is fixed at a position where the locking member engages with the locking member, and when engaged with the locking member, displaces the locking member against the force of the biasing body and moves the rammed head away from the engaging device. An elevator door device featuring: