JPH11349264A - Sliding door device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding door device for an elevator, in which a leg of the door is normally guided even if a truck or the like collides with the sliding door. SOLUTION: The lower end of a sliding door 1 to be opened and closed is guided by a leg 3 fitted to a guide groove 7 of a sill 6. One side is fixed to the sliding door 1, the leg 3 of the door is mounted on the other side, and a plate spring 8 to be deformed in a direction in which the leg 3 of the door approaches the sliding door 1 by pressing of the surface of the sliding door 1 is provided. Moreover, cushioning pieces 14 to be deformed according to the displacement to be generated by the approach of the leg 3 of the door to the sliding door 1 by pressing of the surface of the sliding door 1 is provided between the end of the plate spring 8 and the sliding door 1. Therefore, in elastic deformation by pressing of the surface of the sliding door 1, the leg 3 of the door, the plate spring 8 and the cushioning pieces 14 are elastically deformed, the displacement of the sliding door 1 is absorbed, excessive strong external force does not act on the leg 3 of the door, and plastic deformation of the leg 3 of the door is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

4 to 7 are views showing a conventional elevator sliding door device. FIG. 4 is a perspective view showing a lower portion of the sliding door device, FIG. 5 is a plan view of FIG. 4, and FIG. FIG. 7 is a perspective view showing a deformation state of the legs of the door of FIG. 6. In the figure, reference numeral 1 denotes a sliding door that opens and closes an entrance (not shown), and 2 denotes a mounting base fixed to a lower end of the rear surface of the sliding door 1.

Reference numeral 3 denotes a door leg which is mounted on the mounting base 2 and protrudes downward from the lower end of the sliding door 1 and comprises a mounting bracket 4 and a slider 5 fastened to the mounting base 2. 6
Is a sill forming a lower edge of an entrance (not shown), and is provided with a guide groove 7 into which the slider 5 of the leg 3 of the door is movably fitted.

A conventional elevator sliding door device is constructed as described above, and generally the upper end of the sliding door 1 is driven by a driving device (not shown) to open and close. The lower end of the sliding door 1 is configured such that the slider 5 of the leg 3 of the door is guided by the guide groove 7 of the sill 6.

[0005]

SUMMARY OF THE INVENTION In the conventional elevator sliding door device as described above, in the front side of the sliding door 1,
That is, when a bogie or the like collides with the sliding door 1 from the direction of arrow A shown in FIG. 5, the sliding door 1 is elastically deformed by the collision force. As shown in FIG. 7, when the elastic deformation of the sliding door 1 causes plastic deformation of the mounting bracket 4 of the leg 3 of the door, the contact pressure between the slider 5 and the side surface of the guide groove 7 increases. For this reason, there was a problem that the opening / closing operation of the sliding door 1 was obstructed or the sliding door 1 could not be opened / closed, resulting in an elevator operation failure.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an elevator sliding door device in which a leg of the door is normally guided even when a bogie or the like collides with the sliding door. .

[0007]

In the elevator sliding door device according to the present invention, a sliding door whose lower end is guided by a leg of a door movably fitted in a guide groove of a sill and whose opening and closing operation is performed is provided. A leaf spring that is fixed to the sliding door and is deformed in a direction in which the legs of the door approach the sliding door when the sliding door surface is pressed and the sliding door surface is pressed, and one end is held on the sliding door side and the other end Is provided with a cushioning piece which is addressed to the sliding door and is deformed in response to a displacement of the leg of the door approaching the sliding door when the sliding door surface is pressed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 3 show an example of an embodiment of the present invention. FIG. 1 is a perspective view showing a lower part of a sliding door device, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a leg of the door of FIG. It is a perspective view which decomposes | disassembles and shows a part. In the figure, reference numeral 1 denotes a sliding door that opens and closes an entrance (not shown), and 2 denotes a mounting base fixed to a lower end of the rear surface of the sliding door 1.

Reference numeral 8 denotes a leaf spring whose longitudinal middle portion is fastened to the mounting base 2 via a spring washer by a mounting bolt 9, and 10 are respectively attached to both longitudinal end portions of the leaf spring 8 and face the rear surface of the sliding door 1. With the mounting plate arranged, the mounting hole 1
1. Screw holes 12 are provided on both sides of the mounting hole 11, respectively.

Numerals 3 denote door legs which are arranged at both longitudinal ends of the leaf spring 8 and protrude downward from the lower end of the sliding door 1. The mounting bracket 4 and the slider 5 are fastened to the mounting base 2. It is configured. Then, it is inserted through the mounting bracket 4 and the leaf spring 8 via the spring washer, and the screw hole 1 of the mounting plate 10 is formed.
2 is attached to the leaf spring 8 by a fastening bolt 13 screwed into the plate spring 2.

Numeral 14 is a cushioning piece composed of a compression coil spring.
One end is fitted and held in the mounting hole 11 of the mounting plate 10,
The other end is addressed to the back of the sliding door 1. Reference numeral 6 denotes a sill forming a lower edge of an entrance (not shown), and a guide groove 7 into which the slider 5 of the leg 3 of the door is movably fitted is provided.

In the elevator sliding door apparatus constructed as described above, the legs 3 of the door are mounted on the sliding door 1 via the leaf springs 8 and are arranged near both ends of the sliding door 1 in the width direction. Further, both ends of the leaf spring 8 are arranged to face the rear surface of the sliding door 1 via the buffer pieces 14 respectively. With such a configuration, the sliding door 1 is generally driven at its upper end by a driving device (not shown) to open and close.

The lower end of the sliding door 1 is guided by the slide 5 of the leg 3 of the door movably fitted in the guide groove 7 of the sill 6. Then, when a bogie or the like collides with the sliding door 1 from the front side of the sliding door 1, that is, the direction of the arrow A shown in FIG. 2, the sliding door 1 is elastically deformed by the collision force. In response to the displacement of the sliding door 1 during elastic deformation, the mounting bracket 4, the leaf spring 8, and the cushioning piece 14 of the door leg 3 are elastically deformed. Thereby, the displacement due to the elastic deformation of the sliding door 1 is absorbed.

Therefore, an excessive external force does not act on the mounting bracket 4 of the door leg 3, and plastic deformation occurring in the mounting bracket 4 can be prevented. Therefore, the contact pressure between the slider 5 and the side surface of the guide groove 7 increases due to harmful plastic deformation of the mounting bracket 4, and the opening / closing operation of the sliding door 1 is hindered, or the sliding door 1 cannot be opened / closed. Can be eliminated. Therefore, even if a bogie or the like collides with the sliding door 1, the legs 3 of the door are guided by the guide grooves 7 without any abnormality, and the operation of the elevator can be maintained in a normal state.

Embodiment 2 In addition, as an example of another embodiment of the present invention, the cushioning piece 14 in the embodiment of FIGS. 1 to 3 described above is replaced by a visco-elastic member disposed between the end of the leaf spring 8 and the back surface of the sliding door 1. It can be easily replaced with a material, for example, a cushion rubber. Even in such a configuration, the mounting piece 4 and the leaf spring 8 of the leg 3 of the door are elastically deformed, including the cushioning piece 14, that is, the cushioning rubber, with respect to the displacement of the sliding door 1 during elastic deformation. Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 3 can be obtained.

[0016]

As described above, according to the present invention, a sliding door whose lower end is guided by a leg of a door movably fitted in a guide groove of a sill and whose opening and closing operation is performed, and a sliding door having one side fixed to the sliding door. A leaf spring that is deformed in the direction in which the door leg approaches the sliding door when the sliding door surface is pressed with the door leg attached to the side, one end held on the door leg side and the other end addressed to the sliding door And a cushioning piece that is deformed in response to the displacement of the legs of the door when the sliding door surface is pressed to approach the sliding door.

[0017] With this arrangement, when the bogie or the like collides with the sliding door from the front side of the sliding door, the metal fittings, the leaf springs, and the cushioning pieces of the legs of the door are elastically deformed by the elastic deformation of the sliding door. Displacement due to deformation is absorbed. Therefore, an excessive external force does not act on the mounting bracket of the door leg, and plastic deformation occurring in the mounting bracket can be prevented. For this reason, the contact pressure between the slider and the guide groove side surface increases due to harmful plastic deformation of the mounting bracket, and the opening / closing operation of the sliding door is hindered, or the opening / closing of the sliding door becomes impossible, so that the elevator operation trouble is caused. The problems that occur can be eliminated. Thus, even if a bogie or the like collides with the sliding door, the legs of the door are guided by the guide grooves of the sill without any abnormality, and there is an effect that the operation of the elevator is maintained in a normal state.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a perspective view showing a lower portion of a sliding door device.

FIG. 2 is a plan view of FIG.

FIG. 3 is an exploded perspective view showing leg portions of the door of FIG. 2;

FIG. 4 is a perspective view showing a conventional sliding door device for an elevator, showing a lower portion of the sliding door device.

FIG. 5 is a plan view of FIG. 4;

6 is a perspective view of the legs of the door of FIG.

FIG. 7 is a perspective view showing a deformation state of the legs of the door of FIG. 6;

[Explanation of symbols]

1 Sliding door, 3 legs, 4 mounting bracket, 6 threshold, 7
Guide groove, 8 leaf springs, 14 cushioning pieces.

Claims (1)

[Claims] 1. A sliding door whose lower end is guided by a leg of a door movably fitted in a guide groove of a sill, and which opens and closes,
A leaf spring that is fixed to the sliding door on one side and the leg of the door is mounted on the other side and the door leg deforms in a direction approaching the sliding door when the sliding door surface is pressed, and one end of the door spring The other end is held on the leg side of the door and the other end is addressed to the sliding door, and when the sliding door surface is pressed, the leg of the door is deformed in accordance with the displacement approaching the sliding door. Sliding door device