JP2005306578A - Smoke shielding device of elevator door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke shielding device of an elevator door capable of sealing clearance between an upper frame and a door panel, by easily and efficiently installing smoke shielding packing in the upper frame of a three-way frame. <P>SOLUTION: This smoke shielding device has the three-way frame 3 arranged in a getting in and out part between an elevator hall of a building and a hoistway, a door panel 8 oppositely and movably arranged in the lateral direction to the three-way frame 3 and opening and closing the getting in and out part by its movement, the packing 17 installed on a folding-back plate 12b formed in the upper frame 5 of an upper part of the three-way frame 3 and composed of an elastic body for sealing the clearance G between the upper frame 5 of the three-way frame 3 and the door panel 8 by contacting with the door panel 8, and a fastener 18 for installing this packing 17 on the folding-back plate 12b. The fastener 18 has an elastically expansively openable sandwiching part 25, and detachably installs its packing 17 on the folding-back plate 12b by elastically sandwiching a base part 22 of the packing 17 in an edge part of the folding-back plate 12b by this sandwiching part 25. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a smoke shielding device for an elevator door that improves the airtightness of a door mechanism between an elevator hoistway and an elevator hall, and blocks the flow of smoke when a fire occurs.

  Between the elevator hall of the building and the hoistway, there is an entrance as an entrance / exit for the elevator, a three-way frame is installed at the entrance, and a sliding door type door panel that opens and closes the entrance on the back side of the three-way frame. Is provided.

  The doorway is normally closed by the door panel, and when the car moving up and down in the hoistway reaches the elevator hall on the floor, the doorway opens, and when the car leaves the elevator hall, the doorway opens and closes the doorway. Closed.

  By the way, although the doorway is normally closed with a door panel, there is a slight gap between the door panel and the three-sided frame, so when a fire occurs in the elevator hall, the smoke passes through the gap. It flows into the hoistway, and the hoistway works as a chimney that raises smoke to increase the fire power, and the smoke spreads to other floors, making it difficult to evacuate residents.

  Therefore, in recent years, it has become an important issue to improve the sealing performance of the door mechanism, and as part of that, the gap between the upper frame of the three-sided frame and the door panel is sealed with a packing made of an elastic material such as rubber. Smoke shielding is starting to take place.

  That is, a plurality of screw holes are formed at a predetermined pitch in the upper frame of the three-way frame, screws are inserted into the respective screw holes, and a packing made of an elastic body such as rubber is attached to the upper frame with the plurality of screws. The packing is elastically brought into contact with the surface of the door panel when the door panel is closed, and this packing seals the gap between the upper frame of the three-sided frame and the door panel, thereby blocking the flow of smoke and improving the air tightness of the door mechanism. I am doing so.

  The packing is attached by field work in which the three-side frame is installed in the building and then attached to the upper frame of the three-side frame with a plurality of screws.

  However, in the conventional structure as described above, the packing must be fixed to the upper frame of the three-way frame with a plurality of screws. Since the packing is installed by on-site work after the three-sided frame is installed in the building, it is a work in a limited space, and it takes a lot of labor for the fine work of using tools and fixing the packing with screws. Time-consuming and inefficient, and workability is reduced.

  In particular, as in a high-rise building, if the packing for smoke shielding is attached to the three-way frame of the entrance / exit in each elevator hall on multiple floors with a plurality of screws one by one, the efficiency is considerably deteriorated and the workability is further reduced.

  In addition, since the packing gradually deteriorates, it is necessary to perform maintenance for replacement periodically or as necessary, but in that case, the packing must be replaced by removing and attaching the screws. The efficiency is poor and the maintainability is reduced.

  Furthermore, the upper frame of the three-way frame has to be machined with a plurality of screw holes, which increases the production cost of the three-way frame.

  The present invention has been made paying attention to such points, and the object of the present invention is to easily and efficiently attach a smoke shielding packing to the upper frame of the three-way frame, and between the upper frame and the door panel. An object of the present invention is to provide an elevator door smoke shielding device capable of sealing a gap.

  The invention according to claim 1 is arranged in a three-way frame provided in a boarding / alighting part between an elevator hall and a hoistway of a building, and arranged to be movable in the left-right direction so as to face the three-way frame. An elastic body that is attached to a folding plate formed on an upper frame of the upper part of the three-way frame and seals a gap between the upper frame of the three-way frame and the door panel by contacting the door panel And a fastener for attaching the packing to the folded plate, and the fastener has a pinch portion that can be expanded elastically, and at this pinch portion, a base portion of the packing Is elastically sandwiched between edges of the folded plate, and the packing is detachably attached to the folded plate.

  Invention of Claim 2 is arrange | positioned so that it can move to the left-right direction facing the said three-way frame, and the said boarding / alighting part by the three-way frame provided in the boarding / alighting part between the elevator hall and the hoistway of a building An elastic body that is attached to a folding plate formed on an upper frame of the upper part of the three-way frame and seals a gap between the upper frame of the three-way frame and the door panel by contacting the door panel The packing is integrally provided with a fitting projection that can be elastically deformed, and a fitting hole corresponding to the fitting projection is formed in the folded plate of the three-way frame. The packing is detachably attached to the folded plate by elastically press-fitting the fitting protrusion into the fitting hole.

  The invention according to claim 3 is arranged in a three-way frame provided in a boarding / alighting part between an elevator hall and a hoistway of a building, and arranged to be movable in the left-right direction so as to face the three-way frame. An elastic body that is attached to a folding plate formed on an upper frame of the upper part of the three-way frame and seals a gap between the upper frame of the three-way frame and the door panel by contacting the door panel The packing has a notch groove, and the notch groove is detachably attached to the folded plate by press-fitting the notched groove into the edge of the folded plate of the three-way frame. Yes.

  According to this invention, it is possible to easily and efficiently attach a smoke shielding packing to the upper frame of the three-sided frame without using a troublesome work using a screw, and seal the gap between the upper frame and the door panel. Can do.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 5 show a first embodiment. FIG. 1 is a perspective view of an elevator boarding / exiting portion as viewed from the elevator hall side. An entrance / exit 2 as a boarding / exiting portion is formed on the wall surface of the elevator hall 1. It has become.

  A three-way frame 3 is installed at the entrance / exit 2, and the three-way frame 3 is configured in a gate shape with a pair of side frames 4 arranged on the left and right sides and an upper frame 5 installed between the upper portions of the side frames 4. Has been.

  For example, a pair of double-open door panels 8 for opening and closing the doorway 2 are provided on the back side of the three-way frame 3. Although not shown, the door panel 8 has a plurality of door rollers at the upper portion thereof, and each door roller is slidably engaged with a door rail installed horizontally on the wall surface of the building and is suspended so as to be movable in the left-right direction. The doorway 2 is opened and closed by movement in the direction. A sill 9 is provided horizontally at the lower back side of the entrance 2 so as to be substantially flush with the floor of the elevator hall 1, and the door panel 8 moves in the left-right direction along the sill 9.

  FIG. 2 shows the structure of the three-way frame 3, and folded plates 12 a and 12 b are formed integrally on the front and rear edges of the upper frame 5 that is installed between the upper portions of the pair of side frames 4. Has been. Each folded plate 12a, 12b has an L-shaped cross section from a vertical portion 13 that extends vertically and a horizontal portion 14 that protrudes horizontally from the upper edge of the vertical portion 13 toward the inside of the upper frame 5.

  FIG. 3 shows a cross-sectional structure of a portion along the line AA in FIG. 1, and the door panel 8 provided at the entrance 2 opposes the back surface of the three-way frame 3 when closed, and the rear side of the upper frame 5 A gap G is generated between the folded plate 12b and the surface of the door panel 8.

  A packing 17 made of an elastic material such as rubber is attached to the horizontal portion 14 of the folded plate 12b via a fastener 18. The packing 17 has approximately the same length as the lateral width of the upper frame 5 in the three-way frame 3, and the gap G is sealed by the packing 17, and the hoistway on the elevator hall 1 side and the back side of the door panel 8 is sealed by this sealing. The air flow path between is blocked. Note that the gap between the door panel 8 and the side frame 4 of the three-way frame 3 and the gap between the door panels 8 are sealed by a packing (not shown) attached to the door panel 8.

  Therefore, inconveniences such as smoke flowing into the hoistway side when a fire occurs on the elevator hall 1 side are prevented, thereby preventing chimney formation by the hoistway, increasing the fire power and other smoke to the floor Diffusion can be suppressed.

  As shown in FIG. 4, the packing 17 attached to the folded plate 12 b of the upper frame 5 has a strip shape integrally including a base portion 22 and a sealing portion 23, and the fastener 18 has a U-shaped cross section. The sandwiching portion 25 that can be elastically expanded is formed, and the holding portion 26 is integrally extended from one side edge of the sandwiching portion 25.

  When the packing 17 is attached to the folded plate 12b, as shown in FIG. 5A, first, the base portion 22 of the packing 17 is pressed onto the horizontal portion 14 of the folded plate 12b and the base portion 22 is bent downward. . Then, the fastener 18 is held by the hand, and as shown in FIG. 5 (b), the open side of the pinch portion 25 is directed to the edge of the horizontal portion 14, and the pinch portion 25 is elastically applied to the outside of the horizontal portion 14. The base portion 22 is bent into a U-shape by the sandwiching portion 25 and sandwiched between the horizontal portion 14 and pressed.

  3, the base portion 22 of the packing 17 is fixed to the horizontal portion 14 of the folded plate 12b, and the sealing portion 23 connected to the base portion 22 extends so as to incline upward toward the rear side of the three-way frame 3. The leading edge thereof comes out elastically in contact with the surface of the door panel 8, and the gap G is sealed. The upper surface side of the sealing part 23 is restrained by the restraining part 26 of the fastener 18, and its shape is stably maintained.

  When the door panel 8 moves in the door opening direction, the sealing portion 23 of the packing 17 slides against the surface of the door panel 8, but the sealing portion 23 is suppressed by the holding portion 26 of the fastener 18. Therefore, the sealing portion 23 is prevented from being deformed into an abnormal shape.

  In this way, the packing 17 can be subjected to troublesome and troublesome work as in the case of using screws and tools only by clamping the base portion 22 to the horizontal portion 14 of the folded plate 12b with the clamping portion 25 of the fastener 18. In addition, it can be easily and efficiently installed even in a narrow work space. Accordingly, the efficiency is further improved particularly when the packing 17 is attached to the upper frame 5 of the three-way frame 3 on each floor of the high-rise building.

  On the other hand, when the packing 17 is removed, the pinching portion 25 of the fastening tool 18 can be simply removed from the horizontal portion 14 of the folded plate 12b, and it is easy without requiring troublesome and troublesome work such as when using screws and tools. Can be removed efficiently. Therefore, the work can be efficiently performed when the packing 17 needs to be replaced. In this case, only the packing 17 needs to be replaced, and the fastener 18 can be reused as it is, and thus the cost can be reduced. Moreover, it is not necessary to process the screw hole for attaching the packing 17 in the upper frame 5 of the three-way frame 3, and therefore the manufacturing cost of the three-way frame 3 can be reduced.

  FIG. 6 shows a second embodiment. In this embodiment, a fitting protrusion 30 capable of elastic deformation is integrally formed on the lower surface of the base portion 22 of the packing 17. The fitting protrusion 30 has a large portion 30a at the tip. A plurality of fitting protrusions 30 are provided on the lower surface of the base portion 22 of the packing 17.

  In the three-way frame 3, fitting holes 31 corresponding to the fitting protrusions 30 are formed in the horizontal portion 14 of the folded plate 12 b of the upper frame 5. Then, each fitting protrusion 30 of the packing 17 is press-fitted and fitted into the fitting hole 31 from the upper surface side of the horizontal portion 14 while elastically deforming the enormous portion 30a, whereby the base portion 22 of the packing 17 is fitted to the horizontal portion. 14 is configured such that the gap G is sealed by elastically contacting the front edge of the sealing portion 23 connected to the base portion 22 to the surface of the door panel 8.

  In this case, the fitting protrusion 30 formed integrally with the packing 17 is simply press-fitted into the fitting hole 31 of the horizontal portion 14 and is fitted, so that the troublesome and troublesome work as in the case of using screws and tools is performed. The packing 17 can be easily and efficiently attached to the upper frame 5 of the three-way frame 3 without being required. Accordingly, the efficiency is further improved particularly when the packing 17 is attached to the upper frame 5 of the three-way frame 3 on each floor of the high-rise building.

  On the other hand, when removing the packing 17, it is only necessary to simply remove the fitting protrusion 30 from the fitting hole 31, and it can be easily and efficiently removed without requiring troublesome and troublesome work as in the case of using screws and tools. . Therefore, the work can be efficiently performed when the packing 17 needs to be replaced.

  FIG. 7 shows a third embodiment. In this embodiment, the base portion 22 of the packing 17 has a certain height and thickness, and a cut groove 22 a is formed on one side surface of the base portion 22. ing. The distance from the cut groove 22a in the free state of the base portion 22 to the lower end of the base portion 22 is L1, and the distance from the upper surface of the upper frame 5 to the lower surface of the horizontal portion 14 is L2, and L1> L2.

  When attaching the packing 17, the cut groove 22 a of the base portion 22 is press-fitted into the edge of the horizontal portion 14 of the folded plate 12 b, and the base portion 22 of the lower portion of the cut groove 22 a is horizontally aligned with the upper surface of the upper frame 5. It press-fits between the lower surface of the part 14, compressing elastically.

  As a result, the base 22 is fixed to the folded plate 12b, and the leading edge of the sealing portion 23 connected to the base 22 elastically contacts the surface of the door panel 8 so that the gap G is sealed.

  Also in this case, the screw and the tool can be removed by simply press-fitting the cut groove 22a of the packing 17 into the horizontal portion 14 and press-fitting part of the base portion 22 between the upper surface of the upper frame 5 and the lower surface of the horizontal portion 14. The packing 17 can be easily and efficiently attached to the upper frame 5 of the three-way frame 3 without requiring troublesome and troublesome work as in the case of using it. Accordingly, the efficiency is further improved particularly when the packing 17 is attached to the upper frame 5 of the three-way frame 3 on each floor of the high-rise building.

  On the other hand, when the packing 17 is removed, the cut groove 22a of the base portion 22 is simply extracted from the horizontal portion 14, and the base portion 22 is extracted from between the upper surface of the upper frame 5 and the lower surface of the horizontal portion 14, and screws and tools can be removed. It can be easily and efficiently removed without requiring a cumbersome and troublesome operation as in the case of use. Therefore, the work can be efficiently performed when the packing 17 needs to be replaced.

  In each of the above embodiments, the door mechanism in which a pair of door panels moves in a double-open manner is used. However, the present invention is similarly applied to a single-open door mechanism in which one or a plurality of door panels move in the same direction. Is possible.

The perspective view which shows an elevator door provided with the smoke-shielding apparatus which concerns on 1st Embodiment of this invention. The perspective view which shows a part of three-way frame in the elevator door. Sectional drawing of the part in alignment with the AA in FIG. The perspective view which shows the packing and fastener in the elevator door. Sectional drawing which shows the procedure of attachment of the packing. Sectional drawing which shows 2nd Embodiment of this invention. Sectional drawing which shows 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Elevator hall, 2 ... Entrance / exit, 3 ... Three-way frame, 4 ... Side frame, 5 ... Upper frame, 8 ... Door panel, 9 ... Sill, 12a, 12b ... Folding plate, 13 ... Vertical part, 14 ... Horizontal part, 17 DESCRIPTION OF SYMBOLS ... Packing, 18 ... Fastener, 22 ... Base part, 22a ... Notch groove, 23 ... Sealing part, 25 ... Clamping part, 26 ... Holding part, 30 ... Fitting protrusion, 31 ... Fitting hole.

Claims (3)

A three-way frame provided at the entrance / exit between the elevator hall and the hoistway of the building,
A door panel that is arranged to be movable in the left-right direction so as to face the three-way frame, and that opens and closes the entrance / exit part,
A packing made of an elastic body attached to a folded plate formed on the upper frame of the upper part of the three-way frame, and sealing the gap between the upper frame of the three-way frame and the door panel by contacting the door panel;
A fastener for attaching the packing to the folded plate,
The fastener has a pinch portion that can be expanded elastically, and the pinch portion of the packing is elastically pinched by the edge portion of the folded plate so that the packing can be attached to and detached from the folded plate. A smoke shielding device for an elevator door, characterized by being attached. A three-way frame provided at the entrance / exit between the elevator hall and the hoistway of the building,
A door panel that is arranged to be movable in the left-right direction so as to face the three-way frame, and that opens and closes the entrance / exit part,
A packing made of an elastic body is attached to a folded plate formed on the upper frame of the upper part of the three-way frame, and seals a gap between the upper frame of the three-way frame and the door panel by contacting the door panel. And
The packing integrally includes a fitting protrusion that can be elastically deformed, and a fitting hole corresponding to the fitting protrusion is formed in the folded plate of the three-way frame, and the fitting protrusion is formed in the fitting hole. The smoke-proofing device for an elevator door, wherein the packing is detachably attached to the folded plate by elastically press-fitting. A three-way frame provided at the entrance / exit between the elevator hall and the hoistway of the building,
A door panel that is arranged to be movable in the left-right direction so as to face the three-way frame, and that opens and closes the entrance / exit part,
A packing made of an elastic body is attached to a folded plate formed on the upper frame of the upper part of the three-way frame, and seals a gap between the upper frame of the three-way frame and the door panel by contacting the door panel. And
The packing has a notch groove, and is attached to the folded plate so as to be detachable by press-fitting the notched groove into the edge of the folded plate of the three-way frame.

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