JP4522148B2 - Smoke shield at elevator entrance - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a structure of a smoke shielding door that closes a gap around an elevator hall door, and in particular, a smoke shielding device for an elevator door that closes a gap between an upper frame of an elevator hall frame and a lateral door. It is about.

Usually, an elevator having a smoke shielding function secures a smoke shielding effect by closing a gap with an airtight member in four directions surrounding a landing door. For example, there is a configuration in which a pressure deformation body is pressed from a frame body as in Patent Document 1, or a special mechanism having a smoke shielding member that closes a gap at the top of a landing door as in Patent Document 2. .
In addition, as in Patent Documents 3 and 4, there has been proposed one that obtains a smoke shielding effect with a configuration that does not change the height of the landing door itself.

Japanese Patent Laid-Open No. 7-252067 (page 3, FIG. 3) Japanese Patent Laying-Open No. 2004-26316 (page 9, FIG. 16) Japanese Patent Laid-Open No. 7-247086 (page 3, FIG. 1) Japanese Patent Laid-Open No. 7-157254 (page 4, FIG. 1)

In Patent Document 1 configured to press the pressure deformable body from the frame body, a place where the pressure deformable body is attached is necessary. Therefore, it is necessary to ensure an appropriate overlapping width at the position of the upper frame portion and the landing door. In other words, in order to ensure smoke-proof performance, the height of the landing door must be increased so that it overlaps the upper frame, so the weight of the landing door itself becomes heavy and the load applied to the driving device of the landing door Will increase.
With regard to Patent Document 2, the load on the driving device increases for the same reason.
In addition, in the configuration in which the height of the landing door itself is not changed as in Patent Documents 3 and 4, a space is required to provide a stacking between the landing door and the entrance / exit door. Cannot be used when the specifications are such that the doors are on the same plane.
The present invention has been made to solve the above problems.

A smoke shielding device for an elevator entrance / exit according to the present invention is an entrance / exit frame composed of an upper frame and a vertical frame provided at an entrance / exit leading from a landing to a hoistway, and is arranged with a gap in the entrance / exit frame to open / close the entrance / exit of the entrance / exit frame. An airtight member provided on the upper frame of the landing door and the entrance / exit frame, and an L-shaped belt-shaped smoke shielding member having a vertical section that makes airtight contact with the airtight member when the landing door is closed The smoke-shielding device of the elevator doorway in which the vertical portion of the L-shaped strip-shaped smoke-shielding member is attached to the upper surface of the upper edge of the landing door in an upright state. In the airtight member, a gap adjuster consisting of a main body part, an adjustment tool holding screw screwed into the upper part of the main body part, and an adjustment fitting fixed as appropriate by pressing of the adjustment tool holding screw is disposed. The adjustment bracket A partition portion that is provided in a portion and abuts against a vertical portion of the L-shaped smoke shielding member and prevents its own drop-off, an intermediate portion that is movably inserted into a mounting port provided in the main body portion, and a rear end portion It consists of a ledge that ensures dimensional accuracy and squareness in the front-rear direction when pulled out by hitting the main body part,
The clearance between the upper frame and the landing door is adjusted by tightening / relaxing the adjusting tool holding screw and advancing / retreating the adjusting bracket .

According to the smoke-proofing device for an elevator hall door according to the present invention, it is not necessary to increase the height of the door itself, and accordingly, it is possible to save space without imposing a great load on the driving device for the hall door. In addition, the clearance adjustment operation between the upper frame and the landing door can be easily performed by the tightening / relaxing operation of the adjusting tool holding screw, the advancement / retraction operation of the adjustment fitting, and the advance / retreat operation of the L-shaped strip-shaped smoke shielding member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the same code | symbol shows the same or an equivalent part between each figure.

Embodiment 1 FIG.
FIG. 4 is a front view of an elevator landing door portion for explaining each embodiment.
1 is a side sectional view showing a main part of a smoke shielding device for an elevator landing door according to Embodiment 1 of the present invention, and is a sectional view taken along line AA in FIG.
[FIG. 2] (a) is a side sectional view of the same structure as the smoke shielding device for the elevator landing door of FIG. 1, and (b) is a reference view for comparison with FIG. FIG. 5B is a cross-sectional view taken along line AA in FIG.
3A is a side sectional view showing a modification of the first embodiment, FIG. 3B is a reference diagram for comparison with FIG. 3A, and both FIG. 3A and FIG. It is sectional drawing of A line.

Next, FIGS. 1 to 4 will be described.
In FIG. 1 and FIG. 4, the smoke control device for the elevator entrance / exit that is Embodiment 1 is a three-way entrance / exit comprising an upper frame 1 and a vertical frame 2 provided at an entrance / exit 10 (FIG. 4) leading from a landing to a hoistway. The following smoke shielding device is provided in an elevator including a frame 3 and a landing door 4 that is disposed in the doorway frame with a gap G and opens and closes the doorway 10 by a rail (not shown) held by the upper frame 1. Is provided.
That is, this smoke shielding device has an L-shaped cross section having an airtight member 5 provided on the upper frame 1 of the entrance / exit frame, and a vertical portion 6a that comes into airtight contact with the airtight member when the landing door 4 is closed. The belt-shaped smoke shielding member 6 is configured such that the vertical portion 6a is substantially upright and the horizontal portion 6b of the L-shaped belt-shaped smoke shielding member 6 is attached to the upper surface 4b of the upper edge portion of the landing door 4. . The cross-sectional L-shaped band-shaped smoke shielding member 6 is made of a metal such as iron or stainless steel and has at least one bent portion. The airtight member 5 has elasticity such as rubber 5a as will be described later. It is composed of an elastic material.

As shown in FIG. 2 (b), when using the L-shaped strip-shaped smoke shielding member 6 in a direction to cover the landing door 4, the air smoke shielding member 6 is applied to the dense member 5 to ensure the smoke shielding function. The overlapping portion W is required between the upper frame 1 and the landing door 4, and it is necessary to lengthen the landing door 4 to an unnecessary height. That is, since the landing door 4 becomes larger as the landing door 4 becomes longer, the weight increases and the load applied to the driving device increases. However, in FIG. 2A, that is, in FIG. Even if the band-shaped smoke shielding member 6 is used, it is not necessary to enlarge the landing door 4 accordingly. In Patent Document 1, the same can be said as in FIG.
Moreover, in order to ensure the contact tolerance with the airtight member 5, it is necessary to elevate the landing door 4 and lengthen the vertical portion 6a. However, in FIG. 2A, that is, in FIG. 1, the vertical portion 6a. You just need to make it longer. Furthermore, even if the height of the upper frame 1 changes slightly due to variations in installation, the allowable range is wider in FIG. As a result, it is possible to obtain an elevator having a structure with a strong design capability.
In FIG. 1, the horizontal portion 6 b of the L-shaped smoke shield member having an L-shaped cross section is longer than the thickness of the landing door 4 (front surface on the landing side) and further jumps out to the landing side, and is larger than the width (thickness) of the landing door 4. Although it is drawn long, it does not necessarily need to be long. By making it smaller than the door width, it is also possible to obtain a lighter smoke-proof elevator.
Further, since the vertical portion 6a is set upright and the horizontal portion 6b of the L-shaped strip-shaped smoke shielding member 6 is attached to the upper surface 4b of the upper edge portion of the landing door 4, the vertical portion 6a presses against the airtight member 5. The handle used at the time is fulfilled and the work can be performed smoothly (not shown, but conventionally, a handle portion is provided on the side opposite to the vertical portion).

Next, a modification of the first embodiment will be described with reference to FIG.
This modification is a case in which the upper frame 1 and the landing-side surface of the landing door 4 have a specification (surface-to-surface specification) that matches the surfaces so that they are substantially on the same plane.
If the structure shown in FIG. 2 (b) is applied to this specification as it is, the inverted L-band smoke shielding member 6 is exposed on the front surface of the door and can be seen from the landing as shown in FIG. 3 (b). Therefore, not only the designability is impaired, but also the airtight member cannot be brought into contact well, and the smoke shielding property cannot be ensured. However, if the cross-sectional L-shaped strip-shaped smoke shielding member 6 of FIG. 1 is used in the reverse front-rear direction as shown in FIG. 3A, the opposite surface (back surface) of the vertical portion 6a of the cross-sectional L-shaped strip-shaped smoke shielding member. And since it can be made to contact with the airtight member 5, smoke-insulating performance can be ensured without impairing the design.
By configuring in this way, a lightweight elevator having a smoke shielding function can be obtained even when the upper frame 1 and the landing door 4 are in the same plane (1a) (4a). Even in this case, space saving can be realized.

Embodiment 2. FIG.
FIG. 5 is a side sectional view showing the main part of the smoke shielding device according to Embodiment 2 of the present invention. In order to facilitate adjustment of the mounting position of the L-shaped strip-shaped smoke shielding member, the sectional L-shaped strip-shaped smoke shielding member 6 is composed of a plurality of parts to form a combined structure.
That is, as shown in FIG. 5, a pair of overlapping portions 6a1 and 6a2 in which the vertical portion 6a of the L-shaped strip-shaped smoke shielding member in the cross section is vertically divided and the divided edges are bent horizontally and the upper member can slide are formed. The L-shaped strip-shaped smoke shielding member 6 having a cross-section is formed into a combined structure composed of a plurality of parts. For example, a long hole P is formed in one of the overlapping portions, and both of them are fixtures such as bolts and nuts (not shown). By fastening with, the attachment position of the L-shaped cross-section smoke shielding member 6 is adjusted and fixed. Note that these overlapping portions 6a1 and 6a2 protrude in the inward direction of the hoistway. Reference numeral 7 denotes a hanger plate for the landing door 4.

For example, in FIG. 3A, when the work of pressing the L-shaped strip-shaped smoke shielding member 6 against the airtight member 5 is performed, the mounting screw (not shown) of the L-shaped strip-shaped smoke shielding member 6 is used to perform the work from the hoistway side. 1), the vertical portion 6a was pressed against the hermetic member 5 to hold the gap G, and then the L-shaped strip-shaped smoke shielding member 6 had to be fixed and tightened.
However, in FIG. 5, the horizontal portion 6 b of the L-shaped cross-section smoke shielding member 6 is divided into two or more so that the horizontal portion 6 b of the L-shaped cross-section smoke shielding member 6 is fixed to the landing door in advance, and then the attachment position 6 c is attached Apart from the screws, the vertical part 6a can be pressed against the airtight member 5 with a fixture (not shown) inserted into the overlapping parts 6a1 and 6a2, and the working position is performed on the hoistway side. Adjustment work of the smoke member 6 became easy.
In FIG. 5, the lower member of the L-shaped strip-shaped smoke shielding member 6 has a longer dimension, but the same effect can be obtained even in the opposite dimension or the same dimension.
Further, the lower member (of the band-shaped smoke shielding member 6) on the upper surface of the landing door 4 can be configured not only twice but also four times. (Not shown).

Embodiment 3 FIG.
6 (a), (b), (c), (d), and (e) are component diagrams showing specific examples of the airtight member according to Embodiment 3 of the present invention.
The main part 5a of each airtight member 5 is made of an elastic body such as rubber or rubber-based resin. In the upper view of FIG. 6A, the main part 5a is shaped like a bullet. As shown in the figure below, a part of the cross section 5b may have a curved shape, and it is preferable that the length of the part 5b is an elongated square shape that is four times or more the thickness. In other words, the main portion 5a of the airtight member 5 may be bullet-shaped as long as it can be strongly pressed against the L-shaped strip-shaped smoke shielding member 6, but when the landing door 4 is opened and closed, it travels. Since the resistance increases, a load is applied to the driving device. For this reason, in order to prevent the airtight member 5 from hitting too strongly, an airtight member having a curved surface 5b formed by bending a rubber sheet as shown in the lower diagram of FIG. 6A is better.

The airtight member 5 is not necessarily a single piece of rubber or rubber-based resin.
As shown in FIG. 6B, the airtight member 5 is configured by a combination of an elastic body portion 51 (or 51a) such as rubber and a rigid holding portion 52 (or 52a) that holds and supports the elastic body portion. May be. The holding portion 52 (or 52a) is made of a metal such as aluminum, for example, and is provided with an elastic body (rubber) holding hole Q for inserting an elastic body portion 51 (or 51a) such as rubber. In addition, the holding portion 52 (or 52a) is provided with a screw hole R for inserting a fixing screw (8) for fixing the holding portion 52 (or 52a) to the upper frame 1 (the dotted chain in FIG. 6B). Positioning is performed by the holding portion 52 (or 52a). By providing the rigid holding portion 52 (or 52a) in this way, rather than fixing the elastic body portion 51 (or 51a) such as soft rubber directly with a hole (R in FIG. 5A). The position reproducibility becomes higher, and the rubber part is worn out, so that the replacement work is necessary. However, the replacement work is facilitated by providing this holding part 52 (or 52a).

FIG. 6C is a modification of FIG. 6B, in which the airtight member 5 of FIG. 6B is slimmed.
When the hermetic member 5 in this figure is fixed on the upper frame 1, it is fastened and fixed using a fixing screw 8 provided on a metal holding portion 52a.
At this time, since the screw hole R of the fixing screw 8 and the elastic body holding hole Q for inserting the rubber part 51a are adjacent to each other, the lateral width is widened as indicated by S1 in FIG. 6 (d). .
6D and 6E show two modified examples of the airtight member 5 in which this point is improved.
In this modification, the attachment portion 53 of the holding portion and the rubber portion 51a are not substantially flush with each other, and the attachment portion 53 of the holding portion and the attachment portion 54 of the elastic body portion 51a are divided into two upper and lower stages. The two attachment portions are integrally connected by a connecting portion 55, and are formed in, for example, an S shape or a U shape.
In this way, the elastic body holding hole Q and the screw hole R of the fixing screw 8 for attaching the airtight member 5 to the upper frame 1 are brought to another plane, for example, an S-shaped (or U-shaped) holding portion 52 (or 52a), the dimension S2 in the thickness direction of the landing door 4, that is, the width in the depth direction of the upper frame 1 can be made thin (narrow), and the space necessary for mounting the airtight member 5 can be narrowed. Space saving and weight reduction were enabled by shortening the thickness direction dimension of the landing door.

Embodiment 4 FIG.
The fourth embodiment is a combination of the second embodiment and the third embodiment.
The smoke shielding device for the elevator entrance and exit in this Embodiment 4 is
The vertical section 6a of the L-shaped strip-shaped smoke shielding member is divided into upper and lower parts, and a pair of overlapping parts 6a1 and 6a2 are formed in which the divided edges can be bent horizontally and the upper member can slide. It is comprised by the cross-sectional L-shaped strip-shaped smoke-shielding member 6 attached by fastening by, and the said rigid body holding | maintenance part 52 (or 52a) and the said elastic-body part 51 (or 51a), and the thickness direction of the said landing door In order to reduce the size, the mounting portion 53 of the holding portion and the mounting portion 54 of the elastic body are arranged in two upper and lower stages, and an airtight member in which both the mounting portions are integrally connected by a bent connecting portion 55 is provided. It is provided.

FIGS. 7A, 7B, and 7C show examples of smoke shielding devices for elevator entrances and exits according to the fourth embodiment.
FIG. 7A is a combination of the airtight member 5 shown in FIG. 6 combined with the L-shaped cross-section smoke shielding member 6 shown in FIG.
FIG. 7 (b) shows a modification of FIG. 7 (a), which is an example in which the width of the horizontal portion 6b of the L-shaped strip-shaped smoke shielding member 6 is narrower than the door thickness of the landing door 4. There is no functional problem even if the door thickness is reduced.
Similarly, FIG. 7C is a modified example of FIG. 7A, and the landing door 4 uses another design surface 4c, but the horizontal portion 6b of the L-shaped strip-shaped smoke shielding member 6 has a landing door. 4 can be fixed between the design surfaces 4c and 4d higher than the upper surface 4b.

Embodiment 5 FIG.
FIG. 8 is an explanatory view showing a clearance adjuster of a smoke shielding device for an elevator doorway according to Embodiment 5 of the present invention.
First, a conventional gap adjusting method will be described with reference to FIG.
FIG. 9A shows a free state where the adjuster 9 and the airtight member 5 are moved in the direction of the arrow, and the airtight member 5 is not yet fixed to the upper frame 1.
Next, when adjusting the gap, the gap G is adjusted by moving the smoke shielding member 6 in the direction of the arrow as shown in FIG. When the adjustment is completed, the airtight member 5 is fixed to the upper frame 1 and only the adjustment tool 9 is moved backward in the direction of the arrow as shown in FIG.

Next, the structure of the clearance adjustment tool in Embodiment 5 will be described.
FIG. 8A shows a side view in which the gap adjuster 9 is built in the airtight member 5, and shows a state in which the adjustment fitting 91 is fastened and fixed by the adjustment tool holding screw 92. FIG. 8E is a perspective view for facilitating understanding of the gap adjuster 9.
The gap adjuster 9 includes a main body 9a, an adjuster holding screw 92 screwed into the upper portion of the main body 9a, and an adjustment fitting 91 that is appropriately fixed by pressing of the adjustment tool holding screw. As shown in FIGS. 8 (c) and 8 (d), 91 has a partition portion 91a at the front end portion that abuts against the vertical portion 6a of the L-shaped cross-section smoke shielding member and prevents its falling off. A protrusion 91c is provided that is inserted through the attachment port 9b of the main body portion 9a so as to be able to advance and retreat, and at the rear end of the main body portion 9a is able to ensure dimensional accuracy and perpendicularity in the front-rear direction when pulled out.
In addition, fixation to the upper frame 1 of the airtight member 5 is performed in another location.

Next, the clearance adjustment operation by the clearance adjuster 9 will be described.
Initially, the adjustment fitting 91 is in a state where it is pressed from above by the adjustment tool holding screw 92 or the like and does not move.
When adjusting the gap, as shown in FIG. 8 (b), the adjustment tool holding screw 92 is loosened, and the adjustment fitting 91 is pulled out to the full stop position, and the adjustment tool holding screw 92 is pulled out from the adjustment position. Secure with.
Further, in this state, the vertical portion 6a of the L-shaped strip-shaped smoke shielding member is brought into contact with the screen portion 91a of the adjustment fitting 91 as shown in FIG. 9, and the L-shaped strip-shaped smoke shielding member 6 is fixed in this state. Complete G adjustment. At this time, the protruding allowance of the adjustment fitting 91 is set to be a specified dimension.
After the adjustment of the gap G, the adjustment tool holding screw 92 is loosened again, and the adjustment fitting 91 is pushed back to the state shown in FIG. 8A to hold the airtight member 5 and the adjustment fitting 91 at a predetermined interval. Complete the adjustment operation. Thereafter, the adjustment fitting 91 does not interfere when the elevator is operated.
Thus, the clearance adjustment between the upper frame 1 and the landing door 4 is performed by the tightening / relaxation operation of the adjusting tool holding screw 92, the advancement / retraction operation of the adjustment fitting 91, and the advance / retreat operation of the L-shaped strip-shaped smoke shielding member 6. It is. When the adjustment fitting 91 is attached, the adjustment fitting 91 can be easily inserted into the attachment opening 9b if the adjustment tool holding screw 92 is sufficiently loosened.
Further, the adjustment fitting 91 is provided with a partition portion 91a, which is an L-shaped bent portion, at the front end portion thereof, so that the adjustment fitting 91 is prevented from falling off from the mounting port 9b, and the adjustment tool 91 is prevented from being detached from the airtight member 5. ing.

It is a sectional side view which shows the principal part of the smoke shielding apparatus of the landing door for elevators which is Embodiment 1 of this invention, and is sectional drawing of the AA in FIG. 1 is a side cross-sectional view identical to the elevator landing door smoke shielding device of FIG. 1, and (b) is a reference diagram for comparison with (a), and both (a) and (b) are taken along line AA in FIG. 4. FIG. (A) is a sectional side view showing a modification of the first embodiment, (b) is a reference diagram for comparison with (a), and (a) and (b) are both taken along line AA in FIG. It is sectional drawing. It is a front view of the elevator elevator entrance for demonstrating each embodiment. It is a sectional side view which shows the principal part of the smoke-shielding apparatus in Embodiment 2 of this invention. It is a component diagram which shows each specific example of the airtight member in Embodiment 3 of this invention. It is a sectional side view which shows each example of the smoke-insulating apparatus of the elevator entrance / exit in Embodiment 4. It is the perspective view which shows the side view which incorporated the clearance gap adjustment tool 9 in the airtight member 5, a component figure, and a principal part structure. It is explanatory drawing of the conventional clearance gap adjustment method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper frame 2 Vertical frame 3 Door frame 4 Landing door 4a Front surface of the landing door 4 4b Upper surface of upper edge part of the landing door 4 5 Airtight member 5a Main part 51, 51a of the airtight member 5 Elastic body part 52, 52a Rigid body holding part 53 Attaching part of holding part 54 Attaching part of elastic body 55 Curved connecting part 6 Cross section L-shaped band-shaped smoke shielding member 6a Vertical section of L-shaped band-shaped smoke shielding member 6b Horizontal part of L-shaped band-shaped smoke shielding member 6c Mounting screw 6a1, 6a2 Overlapping part of L-shaped strip-shaped smoke shielding member 6 in section 7 Hanger plate 8 Fixing screw 9 Clearance adjusting tool 9a Body part of clearance adjusting tool 9b Mounting port 91 Adjusting bracket 91a Adjusting partition screen 91b Adjusting bracket Middle part 91c Projection part of adjusting bracket 92 Adjuster holding screw
10 Elevator entrance / exit G Gap P Long hole Q Elastic body holding hole Q Screw hole.

Claims (2)

An entrance / exit frame consisting of an upper frame and a vertical frame provided at the entrance / exit leading from the landing to the hoistway, a landing door arranged with a gap between the entrance / exit frame and opening / closing the entrance / exit of the entrance / exit frame, and an upper frame of the entrance / exit frame And a cross-sectional L-shaped smoke-shielding member having a vertical section that shields and smokes when the landing door is closed. In the smoke shielding device for the elevator doorway, where the vertical part of the smoke member is attached to the upper surface of the upper edge of the landing door in an upright state ,
A clearance adjustment tool comprising a main body, an adjustment tool holding screw screwed into the upper portion of the main body, and an adjustment fitting that is appropriately fixed by pressing of the adjustment tool holding screw is disposed on the airtight member, and the adjustment is performed. The metal fitting is provided at the front end portion and abuts against the vertical portion of the L-shaped smoke shielding member and prevents the drop-off of itself, and an intermediate portion inserted through the attachment port provided in the main body portion so as to freely advance and retract. It is composed of a ledge that secures a dimensional accuracy and perpendicularity in the front-rear direction at the time of pulling out by being provided at the rear end part and hitting the main body part,
A smoke shielding device for an elevator entrance / exit, wherein a clearance between the upper frame and a landing door is adjusted by tightening / relaxing the adjusting tool holding screw and advancing / retreating the adjusting bracket . An entrance / exit frame consisting of an upper frame and a vertical frame provided at the entrance / exit leading from the landing to the hoistway, a landing door arranged with a gap between the entrance / exit frame and opening / closing the entrance / exit of the entrance / exit frame, and an upper frame of the entrance / exit frame And a cross-sectional L-shaped smoke-shielding member having a vertical section that shields and smokes when the landing door is closed. In the smoke shielding device for the elevator doorway, where the vertical part of the smoke member is attached to the upper surface of the upper edge of the landing door in an upright state,
The vertical section of the L-shaped smoke shielding section is vertically divided to form a pair of overlapping portions that can be bent horizontally and the upper member can slide, and the horizontal portion on the door side is attached to the landing door In order to shorten the dimension in the thickness direction of the landing door, which is composed of an L-shaped cross-section smoke-proof member attached by fastening the overlapping portion with a fixture, and the holding portion and the elastic body portion. 2. An airtight member in which the mounting portion of the holding portion and the mounting portion of the elastic body are arranged in two upper and lower stages and the both mounting portions are integrally connected by a connecting portion. Smoke shield for elevator doorway.

Images