JP6448989B2 - Smoke proof banner - Google Patents

Description

  The present invention relates to a smoke proof curtain installed on a ceiling or the like in order to prevent diffusion of smoke generated in a fire or the like.

Conventionally, in this type of invention, a fixed frame (10) configured in a substantially annular shape, such as that described in Patent Document 1, for example, is engaged with the fixed frame (10) so as to move outward of the frame. The movable frame (20), a flexible curtain body (30) fastened to the inner side of the movable frame (20) by a double-sided tape (31), and a space between the fixed frame and the movable frame. There is a smoke proof banner provided with movable frame pulling means (40) for pulling the movable frame outwardly.
According to this prior art, since the lightweight and flexible banner body (30) is used, even if it falls down due to an earthquake disaster, it is compared with the product using the traditional glass sheet-like banner body. Damage and impact when dropped can be reduced.

  However, in the prior art, since the flexible banner body (30) is fixed to the movable frame (20) by the double-sided tape (31), the tensile force by the movable frame pulling means (40) is reduced. If it is too strong, the hanging curtain body (30) may come off from the movable frame (20). Further, when the movable frame (20) is pulled by the movable frame pulling means (40), the end portion side of the hanging curtain main body (30) may be rubbed against the inner wall surface of the fixed frame (10).

JP 2013-240366 A

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is to provide a smoke proof banner capable of improving the fastening strength of a flexible banner body.

One means for solving the above-mentioned problems is a smoke-proof hanging curtain provided in a substantially hanging shape with respect to the ceiling portion, and a fixed frame configured in a substantially annular shape and engaged with the fixed frame so as to move outward of the frame. Movable frame, a flexible sheet-like hanging curtain body provided inside the movable frame, and movable frame tension means provided between the fixed frame and the movable frame to pull the movable frame outward. The movable frame includes one piece part and another piece part sandwiching the end side of the curtain main body from both sides in the thickness direction, and holding means for holding the one piece part and the other piece part in a sandwiched state. The one piece portion and the other piece portion are configured to swing with the frame outer side wider than the fulcrum portion while narrowing the frame inner side with respect to the fulcrum portion, and the portion inside the frame causes the hanging curtain main body to swing. It is characterized by holding the end side .

  Since the present invention is configured as described above, the fastening strength of the flexible banner body can be improved.

It is a front view which shows an example of the smoke-proof banner based on this invention. Sectional drawing which shows sequentially the procedure which inserts | hangs a hanging curtain main body between the one piece part which comprises a movable frame, and another piece part in the smoke-proof banner (a) (b). Sectional drawing which shows sequentially the procedure which fastens a movable frame to a fixed frame in the side. Sectional drawing which shows sequentially the procedure which fixes a movable frame to a fixed frame in the upper side to (a) (b). The principal part enlarged front view which shows the procedure which fastens the fixing frame of a side side and the fixing frame of a downward side sequentially to (a) and (b). Sectional drawing which shows the procedure which fixes a connection bracket to a fixed frame sequentially to (a) and (b). Sectional drawing which shows the procedure which fastens a fixed frame to a support frame in a side side sequentially to (a) and (b). Sectional drawing which shows sequentially the procedure which fixes a fixed frame to a support frame between the two smoke-proof banners arranged in a width direction. Sectional drawing which shows the procedure which fastens a connection bracket to a fixed frame sequentially to (a) and (b). In addition, the structure shown in figure is the same structure symmetrically up and down also in the lower side of a smoke-proof banner. The front view which shows the state which is going to fasten a smoke-proof banner to a support frame.

The first feature of the present embodiment is that the smoke-proof hanging curtain is provided in a substantially hanging shape with respect to the ceiling part, and is engaged with the fixed frame configured in a substantially annular shape so as to move outward with respect to the fixed frame. Movable frame, a flexible sheet-like hanging curtain body provided inside the movable frame, and movable frame tension means provided between the fixed frame and the movable frame to pull the movable frame outward. The movable frame has one piece part and another piece part sandwiching the end side of the hanging curtain main body from both sides in the thickness direction, and holding means for holding the one piece part and the other piece part in a sandwiched state. .
According to this configuration, since the end portion side of the hanging curtain body is sandwiched between the one piece portion and the other piece portion and pulled by the movable frame pulling means, the hanging curtain body is difficult to come off from the movable frame.

  As a second feature, in order to improve workability when sandwiching the hanging curtain main body, the one piece part and the other piece part are widened outside the frame than the fulcrum part while narrowing the frame inside than the fulcrum part. It is configured to swing, and the end portion side of the hanging curtain main body is sandwiched by the inner portion of the frame.

  As a third feature, in order to obtain a structure having good manufacturability or a simple structure, the fulcrum portion is provided on a projection portion provided on one of the one piece portion and the other piece portion, and on the other side. The protrusion is formed in a shaft shape with the protruding end side having a larger cross-sectional area than the base end side, and the recessed portion is formed so as to fit into the fulcrum portion and rotate. .

  In the fourth feature, in order to firmly hold the holding state by the movable member with a simple structure, the holding member has a holding member on the outer side of the frame than the fulcrum portion in the one piece portion and the other piece portion. Was inserted.

  As a fifth feature, in order to improve the holding strength by the holding means, the one piece portion, the other piece portion, and the sandwiched member are formed in a continuous shape along a side edge of the hanging curtain main body. did.

Further, as a sixth feature, in order to improve workability and holding performance when holding the holding state by the holding means, the held member is formed in a columnar shape along the axial direction of the fulcrum part, On the inner surface of the one piece portion and the other piece portion on the outer side of the frame with respect to the fulcrum portion, a recess that fits with the outer peripheral surface of the sandwiched member is formed.

Next, a preferred embodiment having the above features will be described in detail with reference to the drawings.
In the present specification, “inner side of the frame” means the inner side of the frame in the annular fixed frame 10, and “outer side of the frame” means the outer side of the frame in the fixed frame 10.

FIG. 1 shows a smoke proof banner 1 and an installation structure A of the smoke proof banner according to the present invention.
According to the illustrated example, the smoke proof banner 1 includes a plurality (in the illustrated example) in a lateral width direction in a portion surrounded by a ceiling portion a and a side wall portion b substantially perpendicular to the ceiling portion a. According to two, they are installed side by side in a substantially drooping manner. Note that the number of smoke proof banners 1 may be one or three or more.

Each smoke proof curtain 1 is fixed to the inner side of the movable frame 20, the fixed frame 10 configured in a substantially rectangular ring shape, the movable frame 20 engaged with the fixed frame 10 so as to move outward of the frame. A flexible curtain main body 30, movable frame tension means 40 provided between the fixed frame 10 and the movable frame 20 for pulling the movable frame 20 outwardly of the frame, and upper and lower sides of the fixed frame 10 (specifically, the fixed frame And a deflection correcting member 50 for correcting the deflection of the component member 11) (see FIGS. 1 to 4).
The plurality of smoke proof banners 1 arranged in the width direction are connected to the ceiling portion a and the wall portion via the connection bracket 60, the wall side support frame 71, the connection support frame 72, the lower side support frame 73, the upper side support frame 74, and the like. It is fixed to b.

  The fixed frame 10, the movable frame 20, the connection bracket 60, the wall side support frame 71, the connection support frame 72, the lower support frame 73, the upper support frame 74, and the like are made of a lightweight metal material (for example, aluminum material) having rigidity. Molded.

The fixed frame 10 is formed in a rectangular frame shape from a plurality (four in the illustrated example) of fixed frame components 11 and 12.
In the smoke proof banner 1 shown in FIG. 2, two substantially parallel fixed frame components 11, 11 extending in the lateral direction, and extending in the vertical direction on both ends of the fixed frame components 11, 11. And two substantially parallel fixed frame constituent members 12, 12.

Each fixed frame component member 11 in the lateral direction is formed in a substantially concave shape in cross section that continues in the longitudinal direction (see FIG. 4), and penetrates through a recess 11a into which the movable frame 20 can be inserted from the inside of the frame and the bottom surface of the recess 11a. It has a screw insertion hole 11b, a through hole 11c that penetrates the bottom wall of the recess 11a in the longitudinal direction, and a recess 11d that fits into the connection bracket 60.
As shown in FIG. 5, the corner portion on the inner side of the frame is notched on the end side in the longitudinal direction of the fixed frame constituting member 11, and the remaining protruding portion is inserted into the other fixed frame constituting member 12. It is designed to be fitted.

  The concave portion 11a is formed in a groove shape that is continuous in the longitudinal direction of the fixed frame constituting member 11, and the groove width is set slightly larger than the thickness of the entire movable frame 20 (the dimension in the left-right direction in FIG. 4). A female screw portion (not shown) is formed at the end of the through hole 11c in the bottom wall of the recess 11a.

Similarly to the fixed frame component member 11, each of the fixed frame component members 12 in the vertical direction is formed to have a substantially concave cross section continuous in the longitudinal direction (see FIG. 3), and a concave portion 12a into which the movable frame 20 can be inserted from the inside of the frame. It has a screw insertion hole 11b that penetrates the bottom surface of the recess 11a, a groove-shaped recess 12d that is locked to the wall-side support frame 71 or the connection support frame 72, and the like.
In the figure, reference numeral 12e denotes a groove-like recess for fitting into the protrusion 71a (or 72a) in the wall-side support frame 71 or the connection support frame 72.

  As shown in FIG. 5, the fixed frame component member 11 in the vertical direction and the fixed frame component member 12 in the horizontal direction have a screw 13 inserted into one fixed frame component member 11 and the other fixed frame component member 12. By being screwed into the female screw portion (not shown), the fixed frame 10 is formed as an integral rectangular frame.

  The screw insertion holes 11b and 12b of the fixed frame constituting members 11 and 12 are formed so as to support an adjustment screw 41 constituting a movable frame pulling means 40, which will be described later, so that it can rotate and cannot move inward in the frame. The

The movable frame 20 has two movable frame constituent members 20a, 20a extending substantially in parallel in the lateral direction, and is extended substantially in the vertical direction on both ends of the movable frame constituent members 20a, 20a. It is comprised from two movable frame structural members 20b and 20b.
Each of these movable frame constituting members 20a and 20b is in a state where the one piece portion 21 and the other piece portion 22 that sandwich the end portion side of the hanging curtain main body 30 from both sides in the thickness direction, and the one piece portion 21 and the other piece portion 22 are held. Holding means (held member 23) for holding (see FIGS. 2 to 4)

  The one piece portion 21 and the other piece portion 22 swing so that the inner side of the frame (the right side according to FIG. 2) is narrower than the fulcrum portion and the outer side of the frame (the left side according to FIG. 2) is widened. The end portion side of the hanging curtain main body 30 is sandwiched by the inner portion of the frame. The said fulcrum part is the projection part 21a by the side of the one piece part 21, and supports the other piece part 22 so that predetermined amount may be rotated.

The protruding portion 21 a is formed in a substantially cylindrical shaft shape in which the protruding end side has a larger cross-sectional area than the proximal end side, and is continuous in the longitudinal direction of the one piece portion 21.
The recess 22a is formed in a substantially cylindrical shape that follows the shape of the outer peripheral surface of the protrusion 21a so as to fit into the protrusion 21a and rotate.
The one piece portion 21 and the other piece portion 22 are integrated by inserting the protruding portion 21a into the end portion in the longitudinal direction of the concave portion 22a and sliding it substantially in parallel.

  In addition, recesses 21 b and 22 b that fit on the outer peripheral surface of the sandwiched member 23 described later are formed on the inner surface of the one piece portion 21 and the other piece portion 22 on the outer side of the frame (left side in FIG. 2) than the fulcrum portion. . Each of the recesses 21 b and 22 b is formed in a circular arc shape in cross section, and is continuous in a groove shape in the longitudinal direction of the one piece portion 21 and the other piece portion 22.

Further, a sandwiching recess 21c and a sandwiching projection 22c that sandwich the end side of the hanging curtain main body 30 are formed on the inner surface of the one piece portion 21 and the other piece portion 22 on the inner side of the frame from the fulcrum portion (right side in FIG. Is done.
The sandwiching recess 21 c is a recess having a semicircular cross section, and is continuous in a groove shape in the longitudinal direction of the one piece portion 21.
The sandwiching protrusion 22 c is a protrusion having a semicircular cross section that can be fitted to and detached from the sandwiching recess 21 c, and is continuous in a convex rib shape in the longitudinal direction of the other piece 22.

Note that the concavo-convex relationship between the clamping recess 21c and the clamping projection 22c can be reversed. That is, the clamping protrusion 22 c may be provided in the one piece portion 21, and the clamping recess portion 21 c may be provided in the other piece portion 22.
Further, according to the illustrated example, the sandwiching recesses 21c and the sandwiching protrusions 22c are provided in a row. However, as another example, the sandwiching recesses 21c and the sandwiching projections 22c may be provided in a plurality of rows. Furthermore, as another example, it is possible to replace the sandwiching recess and the sandwiching projection 22c with the above-described configuration so that one or a plurality of recesses and projections that are not continuous in the longitudinal direction are fitted and removed.

Further, a concave portion 21d for screwing the adjusting screw 41 (see FIGS. 3 and 4) is formed at the end of the one piece portion 21 on the outer side of the frame (left side according to FIG. 2).
The recessed portion 21d is formed in a groove shape that opens in the shape of a groove in the longitudinal direction of the one piece portion 21 while opening the end portion inside the frame of the one piece portion 21 and screwing the screw portion of the adjusting screw 41 to the inner side surface thereof. It is formed in a possible uneven shape.

  Further, a through-hole 21e through which the deflection correcting member 50 is inserted is provided in the one piece portion 21 (FIG. 4) constituting the movable frame constituting member 20a in the vertical direction at a position where it does not interfere with the adjusting screw 41. The deflection correcting member 50 is a metal long cylindrical member, and is disposed near the center of the hanging curtain main body 30 in the width direction.

Further, the holding means is configured by sandwiching the sandwiched member 23 on the outer side of the frame with respect to the fulcrum part between the one piece part 21 and the other piece part 22.
The sandwiched member 23 is a metal long cylindrical member, and is continuous in the longitudinal direction of the one piece portion 21 and the other piece portion 22 along the side edge of the hanging curtain main body 30.
The sandwiched member 23 is sandwiched between the fulcrum portions of the one piece portion 21 and the other piece portion 22 and the inner portion of the frame is closed with respect to the fulcrum portion of the one piece portion 21 and the other piece portion 22. Hold.
Note that the length of the sandwiched member 23 in the longitudinal direction may be the same as or shorter than the one piece 21 or the other piece 22. Further, the sandwiched member 23 may be a single member in the length direction or a member in which a plurality of members are arranged in the length direction. For example, the sandwiched members 23 that are shorter (for example, about 3 cm) than the one piece portion 21 and the other piece portions 22 are arranged at intervals in the longitudinal direction, and the plurality of sandwiched members 23 are concave curved concave portions. You may make it fit between 21b and 22b.
Further, as another example of the sandwiched member 23, it is possible to adopt a mode in which a single or a plurality of spherical members are fitted between the concave curved portions 21b and 22b.

The hanging curtain main body 30 is formed by forming a flexible flame-retardant (more preferably fire-resistant) sheet material into a rectangular shape in plan view that is long in the horizontal width direction. The material of the curtain main body 30 can be, for example, glass cloth, silica cloth, a vinyl chloride resin sheet material subjected to fluorine processing, a synthetic resin sheet material containing glass fibers, or the like. The banner body 30 is particularly preferably formed of a transparent or translucent sheet material from the viewpoints of not obstructing the visual field, not obstructing the light of the room light, and having good design properties.
Further, as another preferred mode, a display with characters, pictures, or the like may be provided on the front and / or back of the hanging curtain main body 30 so that the smoke hanging banner 1 also functions as a signboard.

The movable frame pulling means 40 is provided between the fixed frame 10 and the movable frame 20 and is configured to pull the movable frame 20 in the outer direction of the frame. According to the illustrated example, the movable frame pulling means 40 has a male screw portion on the front end side and a rear end. An adjustment screw 41 having a head that can be rotated on the side is inserted and locked into the fixed frame constituting members 11 and 12 from the outside of the frame, and the screw portion is screwed into the one piece portion 21.
According to this configuration, the movable frame constituting members 20a and 20b are moved relative to the fixed frame constituting members 11 and 12 by rotating the head of the adjusting screw 41 with a rotation operation jig (for example, a screwdriver or a hexagon wrench). It can be made to approach and separate. Therefore, the tension of the hanging curtain main body 30 fixed to the movable frame constituent members 20 a and 20 b can be adjusted by adjusting the movable frame tension means 40.

  As shown in FIG. 1, the movable frame pulling means 40 is spaced apart in the longitudinal direction of the respective sides on the upper side, the lower side, the left side and the right side on the outer peripheral side of the fixed frame 10 and the movable frame 20. A plurality are provided.

The connection bracket 60 has a substantially concave cross section with the opening facing the fixed frame component 11 (or 12) side so as to fit the upper and lower fixed frame components 11 from the outside of the frame (see FIG. 6). In the direction, it is shorter than the fixed frame constituting member 11 (or 12) (see FIG. 1).
As shown in FIGS. 6 and 9, etc., a screw hole 60a (female screw portion) for screwing a positioning screw 61 (for example, a hexagon socket head screw) is formed in the wall portion outside the frame of the connection bracket 60. Provided. Furthermore, a fastening hole 60 b for fixing the connection bracket 60 to the upper support frame 74 with a screw 75 is provided in the wall portion on the near side (right side according to FIG. 6) of the connection bracket 60.

Further, projections 60c and 60d for fitting the connection bracket 60 to the fixed frame constituting member 11 (or 12) in an uneven shape are provided on the side wall surface in the connection bracket 60 having a concave cross section. One protrusion 60c is a protrusion that fits into the recess 11d of the fixed frame constituting member 11, and is provided continuously in the lateral width direction. In addition, according to the example of illustration, although the connection bracket 60 side is used as the processus | protrusion 60c and the fixed frame structural member 11 side is used as the recessed part 11d, you may reverse the uneven | corrugated relationship.
Further, the other protrusion 60d abuts on the outer edge of the fixed frame constituting member 11 in the connection bracket 60, and prevents the fixed frame constituting member 11 from rattling in and out of the frame.

The wall side support frame 71, the lower side support frame 73, and the upper side support frame 74 are long members having a substantially concave cross section.
On the inner surface of the wall-side support frame 71, as shown in FIG. 7, a protrusion 71a that fits in a concave-convex shape with respect to the concave portion 12e of the fixed frame constituting member 12 is provided continuously in the longitudinal direction. These concavo-convex relationships can also be reversed.
As shown in FIG. 9, projections 73 a and 74 a for locking to the inner end of the connection bracket 60 are provided on the inner surfaces of the lower support frame 73 and the upper support frame 74.
Further, a fastening hole for inserting a screw 75 is provided on the front surface of the upper support frame 74 (see FIG. 9).

The connection support frame 72 is a long member having a substantially H-shaped cross section having openings on both the left and right sides, and connects the two left and right smoke proof banners 1 and 1 (see FIG. 8).
In each opening of the connection support frame 72, a protrusion 72a that fits in a concave-convex shape with respect to the recess 12d of the fixed frame constituent member 12 to be inserted is provided continuously in the longitudinal direction of the connection support frame 72. Note that the concave-convex relationship between the concave portion 12d and the protrusion 72a can be reversed.

Next, a procedure for installing the smoke proof curtain 1 having the above-described configuration will be described in detail.
First, the movable frame constituting members 20a and 20b are connected to the four sides of the hanging curtain body 30 (see FIG. 1).
If it demonstrates in detail, the part inside a frame will be open | released from the fulcrum part by hand picking the part outside a frame rather than the fulcrum part of the movable frame structural member 20a (or 20b), and the open part The end of the curtain body 30 is inserted into (see FIG. 2A).
Next, the opening portion is closed by, for example, picking a portion outside the frame from the fulcrum portion of the movable frame constituting member 20a (or 20b), and the hanging curtain main body 30 is sandwiched between the portions (FIG. 2B). )reference).

And the to-be-clamped member 23 is inserted | pinched in the opening part of a frame outer side rather than the fulcrum part of the movable frame structural member 20a (or 20b) (refer FIG.2 (b)).
In this state, the sandwiched member 23 fits into the concave curved concave portions 21 b and 22 b between the one piece portion 21 and the other piece portion 22, and therefore does not easily come off.
Further, the end side of the curtain main body 30 is sandwiched between the sandwiching recess 21c and the sandwiching projection 22c between the one piece portion 21 and the other piece portion 22 and deformed locally, so that it is not easily pulled out.

  Next, on each of the left and right side sides, as shown in FIGS. 3 (a) and 3 (b), the movable frame constituting member 20b in the sandwiched state is inserted into the fixed frame constituting member 12 on the side and fixed. The adjustment screw 41 inserted into the frame constituent member 12 is screwed into the one piece portion 21 of the movable frame constituent member 20b.

  Similarly, in each of the upper and lower sides, as shown in FIG. 4, the adjustment is performed by inserting the clamped movable frame constituent member 20 a into the upper or lower fixed frame constituent member 11 and inserting it into the fixed frame constituent member 11. Screw 41 is screwed into one piece 21 of movable frame constituting member 20a. At this time, the end side of the bending correction member 50 is inserted into each piece 21 in a penetrating manner.

Then, as shown in FIG. 5, the end portion side of the fixed frame constituent member 12 extending in the lateral direction and the end portion side of the fixed frame constituent member 11 extending in the vertical direction are fitted and fixed by screws 13. Is done.
In this way, the upper, lower, left, and right fixed frame constituent members 11, 12 constitute a rectangular frame-shaped fixed frame 10, and the rectangular frame formed of the upper, lower, left, and right movable frame constituent members 20 a, 20 b inside the fixed frame 10. The movable frame 20 is accommodated so as to be movable in and out of the frame.

  Next, by tightening the adjustment screw 41 on each side, the movable frame constituent members 20a and 20b are moved outwardly of the frame to pull the hanging curtain body 30 and remove wrinkles, slackness, and the like in the hanging curtain body 30. . At this time, the deflection correcting member 50 is sandwiched between the upper and lower fixed frame constituting members 11 and 11 near the center of the hanging curtain main body 30 in the horizontal width direction. For this reason, it can prevent that these fixed frame structural members 11 and 11 deform | transform and a wrinkle and a slack arise in the hanging curtain main body 30. FIG.

Next, a plurality of connection brackets 60 are connected to the upper end side of the rectangular frame-shaped fixed frame 10. If it demonstrates in detail, as shown in FIG. 6, the connection bracket 60 will be fitted by the edge part side of the longitudinal direction in the upper fixed frame structural member 11 which comprises the fixed frame 10. As shown in FIG. At this time, the connection bracket 60 is elastically expanded in the thickness direction, the fixed frame constituting member 11 is inserted therein, and the fixed frame constituting member 11 is tightened by an elastic restoring force.
Further, a positioning screw 61 is screwed into the connection bracket 60 from the outside of the frame, and the protruding end of the positioning screw 61 is brought into contact with the fixed frame constituent member 11 so that the connection bracket 60 is fixed so as not to be displaced in the lateral width direction. Is done.

  Next, as shown in FIG. 7, the fixed frame constituting member 12 on one side of the left and right is fitted to the wall side support frame 71, and the fixed frame constituting member 12 on the other side is fitted as shown in FIG. , It is fitted to the connection support frame 72.

  A plurality of smoke proof banners 1 are assembled in the above procedure and arranged in the width direction. The adjacent smoke-proof banners 1 are connected by a connection support frame 72.

  Further, the lower support frame 73 is fitted to the lower left and right fixed frame components 11, 11 via the connection bracket 60 so as to straddle the plurality of smoke proof banners 1. The lower support frame 73 is fixed to the connection bracket 60 with screws 75.

On the other hand, as shown in FIG. 10, the upper support frame 74 is fixedly fixed to the ceiling part a in advance.
The plurality of smoke banquets 1 integrated by the wall-side support frame 71, the connection support frame 72, and the lower support frame 73 are lifted and fixed to the upper support frame 74. At this time, the plurality of connection brackets 60 on the upper end side of the smoke proof banner 1 are respectively inserted into the upper support frame 74 as shown in FIG. The upper support frame 74 elastically expands in the thickness direction, inserts the connection bracket 60, locks the protrusion 74 a on the lower end side of the connection bracket 60, and restores the locking state elastically. Hold by.
Further, screws 75 are inserted into the upper support frame 74, and the screws 75 are screwed into the connection bracket 60, whereby the plurality of smoke proof banners 1 are suspended so as not to be easily detached.

Therefore, according to the installation structure A of the smoke proof curtain 1 and the smoke proof curtain configured as described above, the end side of the curtain main body 30 is sandwiched between the one piece portion 21 and the other piece portion 22 of the movable frame 20 by the movable frame tension means 40. When pulled, the one piece portion 21 and the other piece portion 22 move integrally in the frame outer direction, and the hanging curtain main body 30 is pulled. Therefore, unlike the conventional structure, the end side of the hanging curtain main body does not rub against the fixed frame or the like.
Further, in the tensioned state, the hanging curtain main body 30 is sandwiched between the holding recess 21 c and the holding protrusion 22 c and is locally deformed and held, so that the hanging curtain main body 30 is pulled out from between the one piece portion 21 and the other piece portion 22. Can be effectively prevented.

Further, in the operation of suspending the smoke proof banner 1 on the upper support frame 74 as described above, a plurality of connection brackets 60 spaced in the horizontal width direction are fitted to the upper support frame 74. Even if there is a slight curved portion in the ceiling part a due to on-site conditions, the operation can be performed smoothly.
That is, for example, if the upper frame fixing member 11 is directly fitted to the upper support frame 74, the lower support frame 73 is deformed along the curved portion of the ceiling portion a. The fixed frame constituting member 11 may not be locked to the lower support frame 73.
However, according to the installation structure A of the above-described embodiment, since the plurality of connection brackets 60 spaced in the width direction are fitted to the upper support frame 74, the fitting property for each connection bracket 60 is good. As a result, the fixed frame component member 11 on the upper side can be smoothly fitted and locked to the upper support frame 74.

  In addition, according to the said Example, as a holding means to hold | maintain the clamping state of the one piece part 21 and the other piece part 22, the cylindrical member 23 was clamped between the one piece part 21 and the other piece part 22. As another example of the holding means, a mode in which a screw is screwed between the one piece portion 21 and the other piece portion 22 in the holding state to hold the holding state, and the holding state is held by the elastic force of the spring material. It is also possible to adopt a mode or the like that holds the.

  Moreover, according to the said Example, as the support structure of the one piece part 21 and the other piece part 22, the projection part 21a by the side of the one piece part 21 was fitted in the recessed part 22a by the side of the other piece part 22, but another example As such, it is also possible to adopt a mode in which the one piece portion 21 and the other piece portion 22 are rotated by a shaft member, or a structure that is swung by another support structure.

  Further, according to the above embodiment, the adjustment screw 41 inserted and supported by the fixed frame 10 is screwed into the movable frame 20 as the movable frame tension means 40. As another example of the movable frame tension means 40, a spring is used. It is also possible to adopt a configuration other than a screw, such as a structure in which the movable frame 20 is pulled to the outside of the frame by force.

1: smoke proof curtain 10: fixed frame 11: fixed frame component 11a: insertable recess 20: movable frame 20a: movable frame component 20b: movable frame component 21: one piece 21a: projection 21b: recess 22: Other piece 22b: recess 23: clamped member (holding means)
30: Hanging curtain body 40: Movable frame pulling means a: Ceiling part

Claims (5)

In the smoke-proof banner provided in a substantially hanging shape with respect to the ceiling,
A fixed frame configured in a substantially annular shape, a movable frame engaged with the fixed frame so as to move outward of the frame, a flexible sheet-shaped hanging curtain body provided inside the movable frame, and A movable frame tensioning means provided between the fixed frame and the movable frame and pulling the movable frame in the frame outer direction;
The movable frame, possess a piece portion and other piece with sandwiching the end portion side of the curtain body from both sides in the thickness direction, and a holding means for holding the piece part and the other piece in the clamping state,
The one piece part and the other piece part are configured to swing while expanding the frame outer side than the fulcrum part while narrowing the frame inner side than the fulcrum part, and the end part of the hanging curtain main body by the part inside the frame A smoke-proof banner characterized by holding the sides . The fulcrum part is composed of a protrusion provided on one of the one piece and the other piece, and a recess provided on the other side. The smoke-proof banner according to claim 1, wherein the smoke-proof banner is formed in a shaft shape having a wide cross-sectional area, and the concave portion is formed so as to be fitted to the fulcrum portion and turn . The smoke proof hanging curtain according to claim 1 or 2, wherein as the holding means, a to-be-clamped member is sandwiched on the outer side of the frame with respect to the fulcrum part in the one piece part and the other piece part . 4. The smoke proof banner according to claim 3, wherein the one piece, the other piece, and the sandwiched member are formed in a continuous shape along a side edge of the hanging curtain main body . The sandwiched member is formed in a cylindrical shape along the axial direction of the fulcrum part,
5. The prevention according to claim 3, wherein a recess that fits to an outer peripheral surface of the sandwiched member is formed on the inner surface of the one piece portion and the other piece portion on the outer side of the frame with respect to the fulcrum portion. Smoke curtain.

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