JPS5813477B2 - Elevator door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator door device.

Generally, in an elevator door device, a car door and a landing door are engaged with each other at necessary times and opened and closed by a drive device provided on the car.

A door safety device is attached to the surface of the car door facing the landing door, and is placed so as to protrude in the door closing direction.If the door comes into contact with an elevator passenger, etc. during the door closing operation, the door safety device will operate. The door is designed to turn around and stop.

However, in order to reduce equipment costs, this safety device is provided only at the door of the car, and is also placed near the door of the car.

For this reason, there was a drawback that it would not work if a passenger's arm or the like was caught only in the door of the landing.

Furthermore, when the door is opened, a child or the like may get their fingertips caught in the gap between the landing door and the doorway frame, and there is also a drawback that the device does not operate in this case.

Additionally, the upper part of the door is usually movably supported, and the lower part is guided by a groove provided in the sill.

For this reason, foreign objects such as pebbles may get into the groove, making it impossible to open or close the door.In this case, too, the safety device will not operate, and an overcurrent will flow through the drive device, shutting down the electrical equipment. There were problems that caused accidents such as burnout.

The present invention solves the above-mentioned drawbacks and provides an elevator door device having a detection device that operates when movement of a landing door that is opened and closed by being engaged with a driven car door is blocked. That is.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In the figure, 1 is a car, 1a is a heel and an entrance, 1b is a guide groove provided at the bottom of the heel and entrance 1a, 2 is a sliding door for the car, and 2a is a guide groove provided at the bottom of the car.
3 is the landing entrance/exit, 3a is the guide groove provided at the bottom of this, 4 is the door of the landing consisting of a sliding door, 4a is provided at the bottom of this and is loosely fitted into the guide groove 3a. A fitted guide, 5 a door drive mechanism installed at the base 1,
6 is a link device connected to this, I is a car side engaging device attached to the car door 12, 8 is a first lever of this, and the middle part is a retaining device T, that is, a car door. 2, one end is pivotally connected to the lower end of the link device 6, and the other end is provided with a cam 8a.

Reference numeral 9 denotes a second lever whose one end is pivotally supported by the car door 2, and a driven roller 10 that engages with a cam 8a is pivotally mounted at the intermediate portion.

A third lever 11 has one end pivoted in the middle of the second lever 9, an intermediate part facing the free end of the second lever 9, and a first retainer 12 made of a roller pivoted at the other end. , 13 is a biasing body consisting of a compression coil spring whose both ends are held by members upright from the second lever 9 and the engagement device 7, respectively, which biases the second lever 9 counterclockwise in FIG. to strengthen

14 is held by the second lever 9 and moves the third lever 11 to the second
A first elastic deformable body 15 consisting of a compression coil spring that presses against the lever 9 is a fourth lever 17 having one end pivotally supported by the engaging device 7 and the other end pivotally supporting a second engaging element 16 consisting of a roller.
A blocking piece 1 stands up from the engagement device 1 and prevents the fourth lever from rotating in the counterclockwise direction in FIG. 4 at a predetermined position.
8 is held by a shaft provided on the blocking piece 11 and the fourth lever 1
5 to the blocking piece 17.
The elastic deformable body 19 is a plate-shaped engagement body that is erected from the landing door 4, and when the car door 2 and the landing door 4 face each other, the first and second retainers 12 and 16 are connected to each other. When both doors are in a fully closed state, a gap g is formed between each of the two doors.

Reference numeral 20 denotes a first detection device 21, which is a switch attached to the second lever 9 and whose actuating portion is in contact with the third lever 11;
The actuating part is attached to the cage side engagement device 7 and the fourth lever 1
5 is the second detection device in contact with the second detection device.

Now, if the fully closed car door 2 is opened,
The link device 6 is rotated clockwise in FIG. 2 by the driver 5.

Then, the first lever 8 is rotated counterclockwise and the car door 2 begins to open.

As a result, the second engaging element 16 approaches the engaging body 19,
At the same time, the first engagement element 12 also approaches the engagement body 19 through the rotation of the second lever 9 due to the rotation of the first lever 8 .

Then, by a predetermined opening operation of the car door 2, the first,
The second retainers 12 and 16 sandwich the engaging body 19, and both the car door 2 and the landing door 4 are engaged and opened.

Also, when the door is idle, the first and second engaging elements 12 and 16 operate in the opposite direction to when the door is open, so that the car door 2 and the landing door 4 operate in the opposite direction.
is disengaged.

In addition, the third lever 11 is connected to the first elastic deformable body 14, and the fourth lever 15 are pressed by the second elastic deformable body 18, respectively.

When the landing door 4 comes into contact with a passenger while the door is closed, or a foreign object such as a pebble gets into the guide groove 3a and the closing operation of the landing door 4 is restricted, the engaging body 19 causes the first door to close. The engager 12 is pressed, and the first elastically deformable body 14 is abnormally deformed.

This causes the first detection device 20 to operate, and this operation causes the drive unit 5 to be stopped or reversed to open the door by a control device (not shown).

In this way, it is possible to prevent an accident in which a passenger is trapped in the door 4 of the landing, or an accident such as burnout of electrical equipment caused by restricting the operation of the door 4 of the landing.

Further, the load that is applied when the landing door 4 comes into contact with a passenger corresponds to the mass of the landing door 4, and the load corresponding to the car door 2 and the link device 6 does not act, so that the passenger The contact force received can be reduced.

Moreover, the contact force does not increase depending on the rotational position of the link device 6 at the time of contact.

In addition, if a child's fingertips get stuck in the gap between the landing door 4 and the edge of the landing entrance 3 while the door is being opened, the opening operation of the landing door 4 will be restricted, and in this case, the opening of the landing door 4 will be restricted. 2 Elastic deformable body 1
8 is abnormally deformed, and the second detection device 21 operates.

Therefore, although a detailed explanation will be omitted, the same effect can be obtained when the door is opened as when the door is closed.

5 to 7 show other embodiments of the present invention, in which the same reference numerals as in FIGS. 1 to 4 indicate corresponding parts, and reference numeral 12 denotes a first Engagement element 16 is engagement device 7
19 is an engaging body formed by a first elastically deformable body 19a made of a plate spring material and a second elastically deformable body 19b; 19c is a part of the landing door 4; The first and second elastic deformable bodies 19a, 19 are fixed to and erected.
a mounting bracket to which the end of b is fixed; 22 is a blocker protruding from the landing door 4 and disposed in contact with the outside of the middle part of the first elastically deformable body 19a; 23 is a blocker similar to the blocker 22; The blocker is disposed facing the second elastically deformable body 19b.

Reference numeral 20 denotes a first detection device which is attached to the landing door 4 and whose actuating portion is in contact with the first elastic deformable body 19a; 21 is attached to the landing door 4 and whose actuating portion is in contact with the first elastic deformable body 19b. This is the second detection device that is in contact with the second detection device.

The first and second elastically deformable bodies 19at19b are manufactured in a shape that is curved outward from each other, and are elastically deformed by the blockers 22 and 23 so as to be parallel to each other when attached to the landing door 4.

As a result, against the normal opening/closing resistance of the landing door 4,
It is designed not to deform even when pressed by the first and second engaging elements 12 and 16.

That is, in this embodiment, the first and second elastic deformable bodies 14 and 18 in the embodiments shown in FIGS. It is something.

The first and second detection devices 20 and 21 are operated when these abnormalities occur.

Therefore, although a detailed explanation will be omitted, it is clear that the same effects as the embodiments shown in FIGS. 1 to 4 can be obtained in this embodiment as well.

As explained above, the present invention provides a door device having a car door and a landing door that are engaged with each other and opened and closed by an engaging element and an engaging body, in which a device is configured on one of the engaging element and the engaging body and is elastically deformable. When the elastically deformable body is pressed against the other side and deforms abnormally, this is detected and the operation of the door device is controlled.

This prevents accidents that may occur to passengers and accidents that may occur to the door device when the operation of the landing door is restricted by an object such as a passenger or a foreign object that has entered the door device. can be done, and also
The contact force acting on the passenger can be reduced.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts of an elevator showing an embodiment of an elevator door device according to the present invention, FIG. 2 is a front view of the car in FIG. 1, and FIG. 3 is a rear view of the landing shown in FIG. 1. , 4th
The figure is an enlarged view of the ■ part in FIG. 2, and FIGS. 5 to 7 are views showing other embodiments of the elevator door device according to the present invention. FIG. 3 is an enlarged view of part 2, and FIG. 7 is a plan view of FIG. 6. 2... Car door, 4... Landing door, 5... Door drive machine, 6... Link device, 1... Car side engagement device, 8... First lever, 9... Second lever, 10...Followed roller, 1
1... Third lever, 12... First engager, 14... First
Elastic deformable body, 15... Fourth lever, 16... Second engager, 11... Blocking piece, 18... Second elastic deformable body, 19...
Engagement body, 20...first detection device, 21...second detection device. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1 An engaging body glued to one of a corner door and a landing door, and a member attached to the other that is displaced by a predetermined action of the engaging body, so that the corner door and the landing door are fully closed. At times, we respond by moving away from the engaging body, and
In a door device having a retainer that is dislocated by a predetermined movement of the corner door and clamps and engages the engaging body, one of the engaging body and the retainer is configured to have elasticity when pressed by the other. An elastically deformable body that is deformable, and a detection device that is provided at either the corner door or the landing door where the elastically deformable body is disposed and operates when the elastically deformable body is abnormally deformed. A door device for an elevator, characterized in that the door device is controlled through the operation of the detection device.