JP2013014421A - Upper part air-tight device for elevator hall door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a conventional elevator hall smoke insulating door device requires great-scale re-constructing work when mounted on an existing site later, because a door panel should be extended upward for incorporating structures including an air-tight material and a stiffening plate and the hall door device should be wholly moved upward in association with the extension of the door panel, resulting in the need for a long construction period and a cost increase.SOLUTION: In an elevator including a doorway frame constituted of an upper frame part 5 provided in a doorway leading from a hall to a shaft and a side frame part not illustrated, and a door panel 10 disposed in the doorway frame at a space for opening/closing the opening of the doorway frame while being guided by a sill, an air-tight material 22 is provided on a header 7 of a hall door device, opposed to the upper part of the door panel 10. The air-tight material 22 is slope-shaped in cross section so that the front end of the air-tight material 22 is turned down for contacting the hall side upper part of the door panel 10 to prevent the entry of smoke.

Description

The present invention relates to an improvement in a door device that prevents smoke from flowing into a hoistway from the hall entrance / exit of an elevator or outflowing from the hoistway to the hall side. In particular, the present invention relates to an upper airtight device for an elevator hall door that can be easily applied to an existing elevator. In the present application, the expression “smoke intrusion” means any inflow or outflow of smoke.

FIG. 1 is a front view of an elevator boarding / alighting section as viewed from the hoistway side. This boarding / alighting section is formed by attaching a three-way frame 3 to an opening (not shown) formed in a building wall 1.

The three-sided frame 3 extends in the vertical direction and forms a gate shape from a pair of side frame parts 4 arranged on both sides and an upper frame part 5 arranged between the upper parts of the side frame parts 4. The space is the entrance 6.

A header 7 extending in the left-right direction is attached to the upper portion of the side wall surface of the hoistway of the building wall 1 by an angle (not shown), and a door rail 8 is horizontally installed on the header 7. Further, a sill 11 is provided at the lower part of the three-way frame 3 so as to be substantially flush with the floor surface of the hall, and the sill 11 is supported horizontally so as to protrude in the hoistway side and extend in the left-right direction.

On the hoistway side of the three-way frame 3, for example, a pair of double-open door panels 10 are provided as a door device facing the three-way frame 3. Door hangers 9 and 9 are respectively attached to the upper portions of the door panels 10, and door rollers 12 and 12 are rotatably provided on the door hangers 9, respectively. The door rollers 12 are suspended on the door rail 8 so as to roll. Thus, each door panel 10 moves to the left and right along the door rail 8, and the doorway 6 is opened and closed by this movement.

As a conventional apparatus, one as shown in FIG. 3 or FIG. 4 has been proposed. That is, FIG. 3 is an AA arrow view in FIG. 1 showing an example of a conventional device, and FIG. 4 is an AA arrow view in FIG. 1 showing another example of the conventional device.

In the example of the conventional apparatus shown in FIG. 3, reference numeral 20 denotes, for example, a hollow airtight material removably fitted in a U-groove bracket 10c provided at an upper end of the door panel 10 so as to be inclined. In the case of the case, it is arranged so that it is located at the upper side as it is at the center, and at the door closing end in the case of a single door type door device. Reference numeral 25 denotes a contact plate provided so as to be adjustable in the vertical direction with respect to the upper frame portion 5, and is attached so as to close the gap by contacting the airtight material 20 when the door panel 10 is closed.

On the other hand, in another example of the conventional apparatus shown in FIG. 4, a three-way frame 3 provided at a boarding / exiting portion between a building landing and a hoistway, and a door panel 10 disposed to face the three-way frame 3 are provided. In the door device provided, an extension member 15 is attached to an upper portion of the door panel 10, and an airtight member 17 made of an elastic body is attached to the upper frame portion 5 of the three-way frame 3. The extension member 15 has an extension portion extending upward from the surface of the door panel 10, and the lip portion 17 b on the distal end side of the airtight member 17 is elastically contacted with the extension portion so that the gap between the door panel 10 and the three-way frame 3 is provided. The gap G1 is sealed to prevent intrusion of smoke.

JP 2004-26316 A Japanese Patent Laying-Open No. 2005-104677

However, in the elevator hall smoke-shielding door device in FIG. 3, the door panel 10 must be extended upward in order to incorporate the configuration of the airtight material 20, the contact plate 25, and the like, and along with the extension of the door panel 10, It was necessary to move the entire landing door device (not shown) upward.

Further, in order to attach the abutting plate 25 to the upper frame portion 5, it is necessary to weld a stud bolt to the upper frame portion 5. There were problems such as welding marks appearing on the surface of the stainless steel plate, which became a design problem.

Further, as described above, in order to realize the elevator hall smoke-proof door device of FIG. 3, since the extension of the door panel 10 and the entire landing door device must be moved upward, it is necessary to go to an existing site. When retrofitting, large-scale remodeling work occurred, requiring a long construction period and increasing costs.

On the other hand, in the elevator hall smoke-proof door device in FIG. 4, the extension plate 15 is screwed to the upper end of the door panel 10 with the countersunk screw 16, so there is no need to change the height of the door panel 10. There is no need to move the whole up.

However, since the countersunk hole for fixing the airtight material 17 and the presser plate 18 is necessary for folding the upper frame part 5 of the three-sided frame 3, when attaching it to an existing site as a retrofit, the countersunk part 5a has a countersunk hole. It was necessary to perform additional machining or replace the upper frame portion 5.

Countersink processing is difficult to perform on-site, and replacing the upper frame portion 5 has problems such as large-scale remodeling work, requiring a long construction period, and high costs.

The present invention is provided in a boarding / exiting part between a building landing and a hoistway, and has a three-sided frame having an upper frame part on the upper part of the boarding / exiting part and a side frame part standing on the side part of the boarding / exiting part, and the three-sided frame, A door panel disposed opposite to the upper panel and the door panel is provided with an airtight material for preventing smoke from entering, and the airtight material in close contact with the upper end on the landing side surface of the door panel is provided.

In the above smoke-proof door device of the present invention, even when retrofitting to an existing site, since the airtight material is attached to the header, it is relatively easy to replace the header or to perform simple additional work on the header. There is no need to perform highly difficult additional work on the upper frame or replace the upper frame that requires large-scale remodeling work.

Further, since the hermetic material extends downward, the door panel may be of a conventional height, and there is no need to change the height of the door panel and to move the entire landing door device accordingly. Moreover, it is not necessary to attach an extension plate to the door panel instead of changing the height of the door panel.

Rear view of the elevator doorway door when the door is fully closed Sectional drawing of the top airtight apparatus which concerns on embodiment of this invention Sectional view of an upper hermetic device according to a prior art embodiment Sectional view of an upper hermetic device according to another prior art embodiment

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

FIG. 2 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 2, a slight gap G <b> 1 is provided between the upper portion of the door panel 10 and the upper frame portion 5 of the three-way frame 3. A header 7 is attached to the upper part of the upper frame part 5, and an airtight material 22 fitted into the attachment member 21 is provided on the header 7 via a screw 14 at the lower part of the hoistway side of the header 7. It is fastened and fixed to the nut 13.

The hermetic material 22 is made of an elastic body and extends at least over the entire opening direction of the doorway 6.

The cross section of the airtight member 22 has a linear shape or a substantially square shape. The airtight member 22 is made of an elastic body such as rubber.

The airtight member 22 is fixed by the screw 14 from the lower part on the hoistway side of the header 7 toward the lower part and the hoistway side, and the front end of the airtight member 22 is in close contact with the landing side surface of the door panel 10 when the door is closed.

Further, by making the point A in FIG. 2 of the airtight material 22 in close contact with the folded portion 5a of the upper frame portion 5, adjustment of the mounting position of the airtight material 22 becomes unnecessary.

In addition, when the door panel 10 moves to open and close from side to side, the airtight member 22 slides with respect to the surface of the door panel 10.

In such a configuration, the gap G1 between each door panel 10 and the upper frame part 5 of the three-way frame 3 is sealed by the airtight material 22, and the gaps between the side frame part 4 and the sill 11 and each door panel 10 are also well known. Airtight from the landing to the hoistway is blocked by the airtight structure, and when a fire occurs on the floor of the landing, smoke from the fire flows into the hoistway from the landing Therefore, the hoistway can be prevented from becoming a chimney and the development of fire can be suppressed, and the diffusion of smoke to the floors of other floors can be prevented.

By the way, if the door panel 10 is the conventional structure shown in FIG. 4, in order to fix an airtight material toward upper direction, the height dimension for making an airtight material contact is required. Alternatively, in the conventional configuration shown in FIG. 3, the door panel 10 must be extended upward in order to secure a mounting space for the contact plate 25 attached to the upper frame portion 5. However, in this embodiment, since the airtight member is fixed downward, the door panel 10 can be generally used as an ordinary ready-made size as it is, and a dedicated size door panel having a large height is separately manufactured. Therefore, it can be configured at low cost.

Further, in the present embodiment, since a dedicated door panel having a large height is not required, in the case of an existing elevator, it is necessary to make a troublesome and troublesome modification such as replacing an existing door panel 10 provided in the elevator. There is no.

Furthermore, since the airtight material 22 is attached to the header 7, the on-site processing for attaching the airtight material to the existing elevator can be easily performed, and even if the on-site processing cannot be performed and the header 7 needs to be replaced, the upper frame portion This can be done more easily than replacing 5.

In this embodiment, the airtight member 22 is fitted into the mounting member 21 and screwed to the header 7. However, the airtight member 22 may be directly screwed to the header 7.

The present invention is not limited to the double door type door device, but can be similarly applied to a single door type door device in which one or more door panels move in the same direction.

DESCRIPTION OF SYMBOLS 1 Building wall 3 Three-sided frame 4 Side frame part 5 Upper frame part 5a Fold-up part 6 Entrance / exit 7 Header 8 Door rail 9 Door hanger 10 Door panel 10c U groove bracket 11 Sill 12 Door roller 13 Caulking nut 14 Screw 15 Extension member 16 Countersunk screws 17, 20 , 22 Airtight material 17b Lip part 18 Presser plate 21 Mounting member 25 Bump plate G1 Gap

Claims (6)

A three-sided frame provided on the boarding / exiting section between the building landing and the hoistway, having an upper frame part on the upper part of the boarding / exiting part and a side frame part standing on the side part of the boarding / exiting part, and arranged opposite to the three-sided frame An elevator hall door comprising: a door panel, an airtight material that prevents intrusion of smoke between the upper frame portion and the door panel, and the airtight material in intimate contact with the upper end of the door side surface of the door panel. Upper airtight device. The upper airtight device for an elevator hall door according to claim 1, wherein the airtight material is attached with a tip directed downward. The upper airtight device for an elevator hall door according to claim 1 or 2, wherein the airtight material is attached to a header. 4. The elevator hall door according to claim 1, wherein the airtight member is in close contact with an upper end of the door panel on the landing side, which is above the lower end of the upper frame portion and below the upper end of the door panel. Upper airtight device. The upper airtight device for an elevator hall door according to any one of claims 1 to 4, wherein a landing-side surface of the airtight material is in intimate contact with a tip of a folded portion at a lower end of the upper frame portion. The upper airtight device for an elevator hall door according to any one of claims 1 to 5, wherein a cross-sectional shape of the airtight material is a square shape.

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