JP2006273553A - Smoke shutoff door device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke shutoff door device for an elevator capable of precluding squeaking originating from deterioration of a bottom sealing material for a smoke shutoff door, eliminating wear due to sliding using a low-cost constitution, and of maintaining air-tightness. <P>SOLUTION: The smoke shutoff door device of the elevator is equipped with a landing doorway frame 2, a landing door 1 installed on the landing doorway frame with a certain gap reserved in between and opening and closing a landing doorway, a threshold 3 on the hall side to guide the bottom of a landing door, the bottom sealing material 7 consisting of a flexible material installed over the whole bottom area of the landing door in such a way as capable of rising and falling in the vertical direction and blocking the gap between the landing door and the threshold when the landing door is full opened, a first energizing member 8 to energize the bottom sealing material in such a way as lifting it up at normal time, and an operating mechanism to generate a gap between the bottom sealing material and the threshold by lifting the bottom sealing material other than when the landing door is full closed, and when the landing door is full closed, block the gap between the landing door and the threshold by depressing the bottom sealing material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator smoke shielding door device for preventing smoke from entering from an elevator entrance / exit.

The structure of a conventional smoke-proof door device for an elevator will be described with reference to FIGS.
FIG. 4 is a front view of a conventional smoke shield door device for an elevator, and FIG. 5 is a cross-sectional view taken along line AA of FIG.
In the figure, 1 is a landing door, 2 is a vertical frame of a landing doorway, 3 is a threshold of a landing, 4 is a guide piece provided at the lower end of the landing door 1, and 5 is provided on a threshold 3 that guides the guide piece 4. A sill groove 6 is a lower-end airtight material made of a flexible material or the like that is attached over the entire lower end portion of the landing door 1 and closes the gap between the landing door 1 and the sill 3. In addition, although not shown in figure, such an airtight material is also mounted | worn with the four directions of the upper end part of the landing door 1, and both right-and-left both ends. The lower end airtight member 6 configured in this way slides on the sill 3 every time the landing door 1 opens and closes.

  Moreover, as a prior art, the thing which provided the shielding wing which prevents smoke invading between the guide pieces of the lower surface of a landing door (for example, refer patent document 1), and the clearance gap with a sill are integrated in a landing door. A panel (see, for example, Patent Document 2) is known in which a panel having a function of closing is movably provided.

JP-A-63-112389 JP 2003-212458 A

  In the conventional smoke-proof door device of the elevator, every time the landing door 1 opens and closes, the lower end airtight material 6 slides on the sill 3, so that even if it is properly installed with a dedicated jig, a squealing sound is generated. However, there are cases where customers are contacted. Moreover, there existed a problem that an airtight material was damaged or airtightness was lost. Moreover, the thing of patent document 1 has the same problem as the smoke-proof door device of the conventional elevator, and the thing of patent document 2 has a problem that the structure is complicated and large, and the cost is high. was there.

  This invention has been made to solve the above-described problems, and prevents noise due to deterioration of the airtight material at the lower end of the smoke shield door, and eliminates wear due to sliding with an inexpensive configuration, thereby improving airtightness. An elevator smoke-proof door device that can be maintained is provided.

  In the smoke-proof door device for an elevator according to the present invention, a landing doorway frame provided at the landing doorway, a landing door that is arranged with a gap in the landing doorway frame, and opens and closes the landing doorway, and a floor surface of the landing doorway It is installed and is installed so that it can be moved up and down in the vertical direction over the entire lower end of the landing door, and the clearance between the landing door and the threshold when the landing door is fully closed A lower end hermetic material made of a flexible material to be closed, a first urging member that urges the lower end airtight material to be always lifted upward, and a lower end airtight material that is lifted upward except when the landing door is fully closed It has an operation mechanism that generates a gap between the airtight material and the sill and operates to close the space between the landing door and the sill by pushing down the bottom airtight material downward when the landing door is fully closed. Is.

  The operating mechanism is pivotally attached to the landing door, and has a movable end abutting on the lower end airtight material and one vertical frame of the cam and the landing doorway frame. A pair of magnets that are attracted to each other when fully closed, and a cam and a landing door, and when the landing door starts to open from the fully closed state, it overcomes the attractive force between the magnets and biases the cam. And a second urging member to be rotated.

  Further, the first urging member is provided between the support seat provided on the inner side of the lower ends of the left and right side portions of the landing door and the hollow inner surfaces of the both ends of the lower end airtight member.

  This invention closes the gap between the landing door and the sill by pushing down the lower end airtight material downward when the landing door is fully closed, and lifts the lower end airtight material upward when the door is not fully closed. A gap is generated between the bottom airtight material and the sill so that it does not slide when the door is opened and closed. Wear can be eliminated and airtightness can be maintained.

Embodiment 1 FIG.
FIG. 1 is a front view showing a configuration of a main part of the elevator smoke-shielding door device according to Embodiment 1 of the present invention other than when the door is fully closed, and FIG. 2 is an elevator smoke-shielding door device according to Embodiment 1 of the present invention. FIG. 3 is a side view showing a main part configuration other than when the door is fully closed, and FIG. 3 is a front view showing the main part configuration when the door of the smoke shielding door device for an elevator according to Embodiment 1 of the present invention is fully closed.

  In the figure, 1 is a landing door, 2 is a vertical frame of a landing doorway, 3 is a threshold of a landing, 4 is a guide piece provided at the lower end of the landing door 1, and 5 is provided on a threshold 3 that guides the guide piece 4. The sill groove 7 is mounted so as to be vertically movable across the entire lower end of the landing door 1 and is made of a flexible material that closes the gap between the landing door 1 and the sill 3 when the landing door 1 is fully closed. The lower end airtight material 8 is a first attachment comprising a coil spring provided between the support seat 1a provided on the lower inner side of the left and right side portions of the landing door 1 and the hollow inner surfaces of both end portions of the lower end airtight material 7, respectively. The biasing member is biased so that the lower end airtight member 7 is always lifted upward. Reference numeral 9 denotes a cam that is provided so that one fixed end thereof is rotatable toward one side portion (left side portion in FIG. 1 in this embodiment) of the left and right side portions of the landing door 1 with the shaft 10 as a fulcrum. The other movable end of this cam 9 is placed in contact with the upper surface of the lower end airtight member 7, and the lower end airtight member 7 is lifted upward as shown in FIGS. 1 and 2 except when the door is fully closed. When the door is fully closed, as shown in FIG. 3, the movable end operates to push down the lower end airtight member 7 and close the gap between the landing door 1 and the sill 3. Is. Reference numeral 11 denotes a first magnet provided on the cam 9, and reference numeral 12 denotes a second magnet provided in the landing entrance vertical frame 2 so as to face the first magnet 11. The first magnet 11 provided on the cam 9 is separated from the second magnet 12 as shown in FIG. 1 except when the door is fully closed, but when the door is fully closed, as shown in FIG. The movable end of the cam 9 is pulled down by the second magnet 12 to push down the lower end airtight member 7 and closes the gap between the landing door 1 and the sill 3. Reference numeral 13 denotes a coil spring provided between the first magnet 11 provided on the cam 9 and the inner surface of one side of the left and right sides of the landing door 1 (the left side in FIG. 1 in this embodiment). As shown in FIG. 1, the second urging member constantly urges the cam 9 counterclockwise. When the landing door 1 starts to open, the second urging member 13 has a spring pressure of the second urging member 13 that is greater than the attractive force of the first magnet 11 and the second magnet 12, and the cam 9 Is rotated counterclockwise about the shaft 10, and the lower end airtight member 7 is lifted upward by the urging force of the first urging member 8, as shown in FIGS. The cam 9, the pair of first and second magnets 11 and 12, and the second urging member 13 constitute an operating mechanism that operates the lower end airtight member 7.

  Since the present invention is configured as described above, when the landing door is fully closed, as shown in FIG. 3, the magnetic force attracting the first magnet 11 and the second magnet 12 attracts the second urging member. 13, the movable end of the cam 9 pushes down the lower end airtight member 7. Thereby, the gap between the landing door 1 and the threshold 3 is closed. When the landing door 1 starts to open from the fully closed state, the spring pressure of the second urging member 13 exceeds the attractive force of the first magnet 11 and the second magnet 12, and the movable end of the cam 9 is The lower end airtight member 7 is lifted upward by the urging force of the first urging member 8 as shown in FIGS. 1 and 2 while rotating counterclockwise about the shaft 10. As a result, a gap is generated between the lower end hermetic material 7 and the sill 3 so as not to slide when the door is opened / closed. Therefore, wear due to sliding can be eliminated and airtightness can be maintained.

It is a front view which shows the principal part structure other than the time of door full closure of the smoke-shielding door apparatus of the elevator in Embodiment 1 of this invention. It is a side view which shows the principal part structure except the time of door full closure of the smoke-shielding door apparatus of the elevator in Embodiment 1 of this invention. It is a front view which shows the principal part structure at the time of door full closure of the smoke-shielding door apparatus of the elevator in Embodiment 1 of this invention. It is a front view of the smoke shield door apparatus of the conventional elevator. It is sectional drawing along the AA line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 landing door 2 vertical frame of landing 3 entrance threshold 4 guide piece 5 threshold groove 6 conventional lower end airtight material 7 lower end airtight material of invention 8 first biasing member 9 cam 10 shaft 11 first magnet 12 second magnet Magnet 13 Second biasing member

Claims (3)

A hall entrance / exit frame provided at the hall entrance / exit,
A landing door that is disposed in the landing doorway frame with a gap and opens and closes the landing doorway;
A floor sill provided on the floor of the hall entrance and guiding the lower end of the hall door;
A lower end airtight material made of a flexible material, which is mounted so as to be vertically movable over the entire lower end portion of the landing door, and closes the gap between the landing door and the sill when the landing door is fully closed,
A first urging member that urges the lower end airtight member to always lift upward;
When the landing door is not fully closed, the lower end hermetic is lifted upward to create a gap between the lower end hermetic and the sill, and when the landing door is fully closed, the lower end hermetic is pushed downward. An operating mechanism that operates to close the gap between the landing door and the sill;
An elevator smoke shielding door device characterized by comprising:   The operation mechanism is rotatably attached to the landing door, and a movable end of the operation mechanism is provided so as to face each other on a cam that abuts a lower end airtight material and one vertical frame of the cam and the landing doorway frame. A pair of magnets that are attracted to each other when fully closed, and between the cam and the landing door, and when the landing door starts to open from the fully closed state, the attraction force between the magnets is overcome and the cam And a second urging member for rotating the urging member in the urging direction.   The first urging member is provided between a support seat provided respectively on the lower end inside of the left and right side portions of the landing door and a hollow inner surface of both ends of the lower end airtight member. The remote rescue operation apparatus for elevators according to claim 2.

Images