JP4694302B2 - Elevator landing door smoke barrier - Google Patents

Description

  The present invention relates to a landing door smoke shielding device for an elevator, and particularly prevents sliding noise between a lower smoke shielding body and a landing sill when the door is opened and closed.

  The conventional elevator door smoke control device has an smoke changeable body that is elastically changeable on a horizontal sliding door installed in the elevator hall, and the entrance vertical frame and the entrance upper frame immediately before the door is fully closed. The smoke shield was elastically changed in contact with the landing sill, and when the door was fully closed, the gap between the door and the entrance vertical frame, the entrance upper frame, and the landing sill was completely closed. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 1993-338975

  In the conventional elevator landing door apparatus configured as described above, until the door is fully closed, the door can be opened and closed without increasing the load of the mechanism for opening and closing the door, but the door is fully closed. Although it is in a short period from immediately before to the fully closed state, the lower smoke shield is in contact with the landing sill, so a sliding noise is generated.

  The present invention has been made to solve the above-described problems. When the landing door is opened and closed, the lower smoke shield is slid in the vertical direction in conjunction with the opening and closing operation of the landing door. The present invention provides an elevator landing door smoke shielding device that prevents sliding noise between the body and the landing threshold.

In the elevator hall door smoke-shielding device according to the present invention, the elevator door has a landing door that opens and closes the elevator hall entrance. Is installed at the lower end of the landing door, and slides up and down in conjunction with the opening and closing operation of the landing door. A lower smoke shield that operates in such a manner, a guide holder that is provided on both sides of the lower end of the landing door, and that guides and holds the lower smoke shield so that the lower smoke shield can be slid in the vertical direction. And a mechanism that slides the lower smoke shield in the vertical direction in conjunction with the opening / closing operation of the landing door, and a lower smoke shield that is provided on the landing threshold when the landing door is fully closed. When in contact And a spring to increase the pressing force, the interlocking mechanism includes a take-up device provided on the hanger rollers landing door, a first interlocking rope having one end wound on the winding device, the other of the first interlocking rope The first winder gear provided at the end, the second winder gear driven by the rotation of the first winder gear, and the second winder gear are linked to each other in the center of the lower smoke shield. The lower smoke shield is not in contact with the landing sill even during a brief period from when the landing door is fully closed to when the landing door is fully closed. It is comprised as follows.

  According to this invention, by sliding the lower smoke shield in the vertical direction in conjunction with the opening / closing operation of the landing door, even during a short period from when the door is fully closed to when it is fully closed, Since the lower smoke shield is configured not to contact the landing sill, sliding noise due to the contact between the lower smoke shield and the landing sill when the landing door is opened and closed can be prevented.

Embodiment 1 FIG.
FIG. 1 is a rear view showing the door opening state of the elevator hall door smoke shielding apparatus according to Embodiment 1 of the present invention, and FIG. 2 shows the fully closed state of the elevator hall door smoke shielding apparatus according to Embodiment 1 of the present invention. FIG.

  In the figure, 1 is a landing door installed at a landing doorway, which opens and closes the landing doorway. The landing door 1 is configured to close the gap between the landing door vertical frame, the landing entrance vertical frame, the landing entrance upper frame, and the landing sill in contact with the landing entrance vertical frame, the landing entrance upper frame, and the landing sill in the fully closed state. It is what. Reference numeral 2 denotes a hanger roller provided at the upper end portion of the landing door 1 for moving the landing door 1. Reference numeral 3 denotes a rail installed at the upper part of the hall entrance / exit for the hanger roller 2 to roll. Reference numeral 4 is a landing threshold, and 5 is a door leg provided at the lower end of the landing door 1 for guiding the landing door 1. 6 is a winding device attached to the hanger roller 2, 7 is a first interlocking rope whose one end is wound around the winding device 6, and 8 is a first winding that is provided at the other end of the first interlocking rope 7. The device gear, 9 is a second winder gear driven by the rotation of the first winder gear 8, 10 is a second interlocking rope interlocked by the second winder gear 9, and 11 is at the lower end of the landing door 1. The lower smoke shielding body made of an elastic body such as rubber is provided, and the lower end portion of the second interlocking rope 10 is connected to the center of the lower smoke shielding body. Reference numeral 12 denotes a guide holder provided on both sides of the lower end of the landing door 1 for guiding and holding the lower smoke shield 11 so that it can slide in the vertical direction. Reference numeral 13 denotes springs provided on both sides of the lower end of the landing door 1 for increasing the pressing force from above when the lower smoke shield 11 comes into contact with the landing threshold 4.

Next, the operation will be described.
The landing door 1 starts to move in the door closing direction from the door open state shown in FIG. 1, and the hanger roller 2 starts to rotate. When the hanger roller 2 rotates, the winding device 6 attached to the hanger roller 2 also starts rotating. When the winding device 6 rotates, the first interlocking rope 7 is wound around the winding device 6. As a result, the first winder gear 8 connected to the first interlocking rope 7 starts to rotate in conjunction with it. And the 2nd winding device gear 9 driven by rotation of the 1st winding device gear 8 rotates. At this time, the gear ratio between the first winding device gear 8 and the second winding gear 9 is set in consideration of the door opening dimension. When the second winding device gear 9 rotates, the second interlocking rope 10 is pushed down. When the second interlocking rope 10 is pushed down, the lower smoke shield 11 connected to the second interlocking rope 10 slides downward. When the landing door 1 is fully closed as shown in FIG. 2, the lower smoke shield 11 is in close contact with the landing threshold 4. At this time, the pressing force is increased by the spring 13 to further prevent the smoke inflow.
When the landing door 1 moves from the door-closed state shown in FIG. 2 in the door-opening direction, the above operation is reversed, and the lower smoke shield 11 slides upward.

  According to the first embodiment, by sliding the lower smoke shield in the vertical direction in conjunction with the opening / closing operation of the landing door, a short period from the time when the door is fully closed to the time when the door is fully closed Since the contact between the lower smoke shield of the landing door and the landing sill can be eliminated, the sliding noise caused by the contact between the lower smoke shield and the landing threshold when the landing door is opened and closed can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a rear view which shows the door open state of the elevator hall door smoke-shielding apparatus in Embodiment 1 of this invention. It is a rear view which shows the fully closed state of the elevator hall door smoke-shielding device in Embodiment 1 of this invention.

Explanation of symbols

1 landing door 2 hanger roller 3 rail 4 landing sill 5 door leg 6 winding device 7 first interlocking rope 8 first winding device gear 9 second winding device gear 10 second interlocking rope 11 lower smoke shield 12 holding Tool 13 Spring

Claims (1)

A landing door that opens and closes an elevator landing doorway, and when the landing door is fully closed, the landing doorway vertical frame, the landing doorway upper frame, the landing door and the landing doorway vertical frame, the landing doorway upper frame, In an elevator hall door smoke shield configured to close the gap between the hall sill,
A lower smoke shield that is provided at a lower end of the landing door and operates to slide up and down in conjunction with the opening and closing operation of the landing door;
A guide holder that is provided on both sides of the lower end of the landing door, and that guides and holds the lower smoke shield so that it can slide in the vertical direction
An interlocking mechanism that is provided between the lower smoke shield and the opening / closing mechanism of the landing door, and slides the lower smoke shield vertically in conjunction with the opening / closing operation of the landing door;
A spring that is provided on the lower smoke shield and increases the pressing force when contacting the landing sill in a fully closed state of the landing door;
The interlocking mechanism is provided on a winding device provided on a hanger roller of the landing door, a first interlocking rope having one end wound around the winding device, and provided on the other end of the first interlocking rope. The first winder gear, the second winder gear driven by the rotation of the first winder gear, and the second winder gear are interlocked with each other, and the lower end of the lower smoke shield is at the lower end. The lower smoke shield is not in contact with the landing sill for a short period from immediately before the landing door is fully closed to the fully closed state. An elevator hall door smoke-shielding device characterized by being configured as described above.

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