JP6009855B2 - Fireproof window shutter seat plate structure - Google Patents

Description

  The present invention relates to a seat plate structure of a fireproof window shutter.

  Window shutters cover windows that open in the building frame and are attached to the outer wall. Considering rust prevention and design, etc., parts made of aluminum or aluminum alloy or parts made of resin are often used. Has been. As shown in FIG. 10, the window shutter 501 has a shutter body attached above the window 503, and an outer frame 505 is attached to the left and right so as to sandwich the window 503 from both sides of the shutter body. A guide rail 507 is fixed inside each outer frame 505, and a shutter curtain 509 is pulled out along the guide rail 507 from the shutter body. In the window shutter 501, left and right outer frame lower end portions 511 are connected to each other by a lower frame 513 arranged horizontally below the window 503 to form a shutter frame portion 515 (see Patent Documents 1 and 2).

JP 2005-16150 A JP 2005-30123 A

  However, in the event of a fire or the like, the shutter curtain 509 has a holding force of the shutter curtain 509 as shown in FIG. Decrease. Thus, when the shutter curtain 509 in the closed state is further extended, a load due to slack is applied to the seat plate 517. Further, due to heat from the fire, the shutter curtain 509 extends due to thermal expansion, becomes a load in the hanging direction, and is applied to the seat plate 517. In general, the window shutter 501 is configured so that the load of the shutter curtain 509 itself is lifted in the winding direction in the storage portion and the seat plate 517 is not subjected to a large load. In the event of a fire or the like, this load applied to the seat plate 517 is received by the lower frame 513. Since the seat plate 517 is made of an aluminum alloy, the seat plate 517 may be softened and melted when continuously heated by the flame from the front, and there is a possibility that the fire resistance strength is lowered in combination with the increased load. If the lower frame 513 made of aluminum alloy is also softened and melted by melting the seat plate 517, the fire resistance of the entire shutter frame is significantly reduced. On the other hand, if the thickness of members such as the seat plate 517 and the lower frame 513 is increased to ensure the fire resistance, the material cost becomes high and the weight increases, which is uneconomical.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a seat plate structure for a fireproof window shutter that can make it difficult to soften or dissolve the seat plate during a fire.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The seat structure of the fireproof window shutter according to the first aspect of the present invention is such that the both sides are guided by a pair of left and right guide rails 35 sandwiching the building opening 13 and the storage unit 19 is installed above the building opening 13. A steel shutter curtain 11 that can be lifted and wound to open and close the building opening 13 to be opened and closed;
A lower frame 39 provided laterally across the lower side of the pair of left and right guide rails;
A vertical plate 51 that is suspended from the lower end of the shutter curtain 11 and whose upper end is connected to and supported by the shutter curtain 11 and an extended plate that is provided below the vertical plate 51 and extends to the building opening 13 side. A seat plate 23 having a portion 53;
Standing front plate 41, which is formed upright on the front side of the lower frame 39 and has a standing upper end 61 abuts on the extended plate portion 53 on the building side from the curtain extension line 59 passing through the center of gravity 57 of the seat plate 23 from below. When,
A locking plate portion 63 that is suspended from the extended plate rear end portion 65 on the building side of the extended plate portion 53 and faces the front plate 41;
It is characterized by comprising.

  In the seat plate structure of the fireproof window shutter, when the shutter curtain 11 is heated by a flame in a fire or the like, the extra winding portion of the storage unit 19 is drawn out, and the suspension force of the shutter curtain 11 is reduced. When the shutter curtain 11 in the closed state is further extended, a load due to slack is applied to the seat plate 23 in the hanging direction. When a load is applied to the seat plate 23, the seat plate 23 rotates in the forward tilt direction away from the building side with the portion of the extended plate portion 53 that the raised upper end portion 61 contacts as a fulcrum 67. As the seat plate 23 rotates forward, the shutter curtain 11 above the seat plate 23 hangs with the slack portion 69 protruding forward from the lower frame 39. The slanted portion 69 becomes a barrier for the seat plate 23 tilted forward, making it difficult for the seat plate 23 to directly receive flames and heat from the front. Further, since the slack portion 69 hangs down to the front of the lower frame 39, load support is also shared by the storage portion 19, and the load that has been applied to the lower frame 39 by the slack portion 69 is reduced. Will be.

Seat plate structure fire window shutter according to claim 1 of the present invention, there is provided a seat plate structure of the fire window shutters,
The extending plate rear end portion 65 and the locking plate portion 63 are continuously provided by a downward arcuate curved portion 73.

  In the seat plate structure of the fireproof window shutter, when the shutter curtain 11 applies a load in the hanging direction to the seat plate 23 due to heat such as a fire, the seat plate 23 pushed down is It is rotated in the forward tilting direction without being caught by the standing upper end 61. That is, the slack portion 69 can be easily generated positively.

The seat plate structure of the fire window shutter according to claim 2 of the present invention is the seat plate structure of the fire window shutter according to claim 1,
The bend that abolish engagement with the upright upper section 61 when the suspension has force the seat plate 23 by the decrease in the shutter curtain 11 is rotated before the tilting direction away from the building side fulcrum 67 of the standing upper portions 61 A portion 71 is provided on the locking plate portion 63.

  In the seat plate structure of the fireproof window shutter, the seat plate 23 tilted forward is not easily detached from the standing upper end portion 61 by locking the U-shaped bent portion 71 to the standing upper end portion 61. That is, it is possible to keep the forward leaning posture, and it is possible to easily generate a sufficient slack portion 69.

The seat structure of the fire window shutter according to claim 3 of the present invention is the seat structure of the fire window shutter according to claim 2 ,
An engaging claw portion 75 that engages with the bending portion 71 of the seat plate 23 that has been rotated forward and restricts the detachment of the U-shaped bending portion 71 from the standing upper end portion 61 is provided at the standing upper end portion 61. It is characterized by.

  In the seat plate structure of the fireproof window shutter, the U-shaped bent portion 71 that is locked to the standing upper end portion 61 is further locked by the locking plate portion 63 provided on the standing upper end portion 61, and is more largely inclined forward. It becomes possible to continue to lock the seat plate 23 rotating to the lower frame 39. As a result, it becomes possible to form a further sufficient slack portion 69, and the aluminum alloy seat plate 23 can be covered from the flame by the slack shutter curtain 11 made of steel.

  According to the seat plate structure of the fireproof window shutter according to the first aspect of the present invention, when the shutter curtain is heated by a flame in a fire or the like, the extra winding portion in the storage portion is drawn out, etc. If the holding force is reduced and the shutter curtain in the closed state is further extended, a load due to slack will be applied to the seat plate in the hanging direction, but the seat plate is the part of the extended plate part where the standing upper end hits Rotate in a forward tilting direction away from the building with fulcrum as the fulcrum. As the seat plate rotates forward, the slack portion of the shutter curtain above the seat plate protrudes forward from the lower frame and hangs down. In the seat plate inclined forward, the slack portion serves as a barrier, so that it is difficult to directly receive flames and heat from the front, thereby preventing the seat plate from being softened or melted. Further, since the slack portion hangs down to the front of the lower frame, load support is also shared by the storage portion, and conventionally, the load that is increased by the slack portion and all has been applied to the lower frame is reduced. Further, since the seat plate does not soften or dissolve, it is not necessary to increase the thickness of the seat plate, raw materials can be reduced, and costs can be reduced. Furthermore, since the lower frame only needs to abut the front plate on the building side of the extended plate part, the projecting length from the building can be shortened compared to the conventional lower frame, which also reduces the material cost and costs. Can be suppressed.

According to the seat plate structure fire window shutter according to claim 1, wherein according to the present invention, when the shutter curtain has become possible to apply a thermal load in the drooping direction to the seat plate by the fire, the depressed seat plate Is rotated by the bending portion in a forward tilting direction without being caught by the standing upper end portion, and the seat plate can be smoothly guided to the forward tilting posture. That is, the slack portion can be easily generated positively.

According to the seat plate structure of the fireproof window shutter according to the second aspect of the present invention, the seat plate inclined forward locks the U-shaped bent portion to the standing upper end portion, and is difficult to be detached from the standing upper end portion. . That is, it is possible to make it difficult to remove the forwardly inclined seat plate from the lower frame, and it is possible to keep the forward inclined posture, and it is possible to easily generate a sufficient slack portion.

According to the seat plate structure of the fireproof window shutter according to the third aspect of the present invention, the U-shaped bent portion that is locked to the standing upper end is further locked by the locking plate provided on the standing upper end. The U-shaped bent portion is made difficult to come off from the locking plate portion, and the seat plate that rotates more greatly in the forward tilt direction can be kept locked to the lower frame, making it more difficult to come off. This makes it possible to form a more sufficient slack portion, and the aluminum alloy seat plate can be covered from the flame by the slack shutter curtain made of steel.

It is a perspective view of the fireproof window shutter which concerns on this invention. It is a longitudinal cross-sectional view of the accommodating part shown in FIG. FIG. 3 is an enlarged view of a seat plate and a lower frame part shown in FIG. 2. It is an effect | action figure showing the shutter curtain loosened by the heat | fever. It is an effect | action figure showing the shutter curtain further loosened from FIG. It is sectional drawing of the seat board structure which concerns on the modification by which the U-shaped bending part was provided in the latching board part. It is an effect | action figure showing the shutter curtain which slackened with the heat | fever in the seat plate structure which concerns on the modification shown in FIG. It is sectional drawing of the seat board structure which concerns on the modification by which the extension board rear end part and the latching board part are provided in a row by the curved part. (A) is sectional drawing of the seat-plate structure which concerns on the modification by which the latching board part was provided in the standing upper end part, (b) is an effect | action figure showing the shutter curtain loosened by the heat | fever in the modification of (a). . It is sectional drawing of the conventional seat board structure. FIG. 11 is an operation diagram illustrating a state in which the shutter curtain is loosened by heat in the conventional seat plate structure illustrated in FIG. 10.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a fire window shutter according to the present invention, FIG. 2 is a longitudinal sectional view of a storage portion shown in FIG. 1, and FIG. 3 is an enlarged view of a seat plate and a lower frame portion shown in FIG.
The seat plate structure of the fireproof window shutter according to the present embodiment can be suitably used for the window shutter device 15 that opens and closes the building opening 13 (see FIG. 2) using the shutter curtain 11, for example. The window shutter device 15 is attached to the outside of a sash window 17 (see FIG. 2) that constitutes a window portion of a house, for example.

  In the window shutter device 15, a storage unit 19 is attached above the building opening 13. The storage unit 19 stores the shutter curtain 11 and the winding device. The shutter curtain 11 is formed by connecting a plurality of steel slats 21. The shutter curtain 11 has a seat plate 23 (see FIG. 2), which will be described in detail later, at the tip of the operation direction, that is, at the lower end when fully closed.

  In the window shutter device 15, a pair of steel side brackets 27 are fixed to, for example, a pillar 25 that is a building frame. Bearing fittings are fixed to the inside of each side bracket 27 so as to face each other, and the bearing fittings support both ends of the winding shaft. A winding wheel 29 is rotatably supported on the winding shaft, and the winding wheel 29 fixes a suspension base that is the rear end of the shutter curtain 11 in the operation direction.

  A pair of outer frames 31 made of aluminum alloy (see FIG. 3) are fixed to the left and right of the storage portion 19 and hang down. The outer frame 31 is provided so as to protrude from the outer wall 33 (see FIG. 2) with the sash window 17 interposed therebetween. A guide rail 35 is fixed inside each outer frame 31. Both sides of the shutter curtain 11 are engaged with the guide rail 35. The shutter curtain 11 moves up and down the building opening 13 by being guided and wound up from a storage unit 19 that is guided by a pair of left and right guide rails 35 sandwiching the building opening 13 and installed above the building opening 13. Open and close freely.

  Outer frame lower end portions 37 (see FIG. 3) of the pair of hanging outer frames 31 are connected by an aluminum alloy lower frame 39. On the front side of the lower frame 39, an upright plate 41 is formed to stand up over its entire length. The lower frame 39 is provided in the lateral direction across the lower side of the pair of left and right guide rails, and abuts on the upper end of the trunk edge 43 (see FIG. 3). The surface of the trunk edge 43 is covered with an outer wall finishing material. Therefore, the connection part of each outer frame lower end part 37 and lower frame end part protrudes from the outer wall 33 at two left and right portions as projecting corners.

  In the present embodiment, the outside of each outer frame 31 is further covered with a decorative frame 45 made of aluminum alloy. The outer frame 31 provided outside the pair of guide rails 35, the decorative frame 45 provided outside each outer frame 31, and the lower frame 39 that connects the outer frame lower end portions 37 of the pair of outer frames 31. A frame portion 47 is configured.

  A seat plate 23 is connected to the lower end of the shutter curtain 11. The seat plate 23 has a vertical plate portion 51 shown in FIG. 3 whose upper end is connected to and supported by the lowermost slat 49 (see FIG. 1) of the shutter curtain 11, and a building opening 13 side below the vertical plate portion 51. It has the extended board part 53 extended and connected and becoming substantially horizontal in this embodiment. A draining plate 55 that is bent in a substantially S shape and covers the lower frame 39 is suspended from the lower surface of the extended plate portion 53. In the seat plate 23, when the shutter curtain 11 is lowered to the opening closed position, the extended plate portion 53 on the building side with respect to the draining plate 55 comes into contact with the front plate 41 of the lower frame 39. That is, the seat plate 23 is simply placed on the pre-rise plate 41 of the lower frame 39. Here, the stand-up front plate 41 is formed upright on the front side of the lower frame 39, and the stand-up upper end portion 61 extends downward from the extension plate portion 53 on the building side with respect to the curtain extension line 59 passing through the center of gravity 57 of the seat plate 23. Abut. That is, only the rear end side of the seat plate 23 is placed.

  A locking plate portion 63 is provided on the extended plate portion 53 of the seat plate 23 that is brought into contact with the upright plate 41 of the lower frame 39. The locking plate portion 63 is suspended from the extended plate rear end portion 65 on the building side of the extended plate portion 53, and is formed to face the front plate 41 of the lower frame 39. In the lower frame 39, the front plate 41 is integrally formed by an aluminum extruded product. In addition, the seat plate 23 is also integrally formed of an aluminum extrusion-molded product including a vertical plate portion 51, an extended plate portion 53, a draining plate 55, and a locking plate portion 63. Since the cross-sectional shape is complicated, the lower frame 39 and the seat plate 23 are made of an aluminum alloy. On the other hand, the slat 21 of the shutter curtain 11 has a simple shape and is obtained by bending, and is therefore made of steel.

Next, the operation of the seat plate structure of the fireproof window shutter having the above configuration will be described.
4 is an operation diagram showing the shutter curtain 11 loosened by heat, and FIG. 5 is an operation diagram showing the shutter curtain 11 further loosened from FIG.
In the seat structure of the fireproof window shutter, when the shutter curtain 11 is heated by a flame such as a fire, the extra winding portion in the storage portion 19 (see FIG. 2) is extended, and the suspension force of the shutter curtain 11 is increased. Decrease. Further, the shutter curtain 11 expands and deforms due to the heat of the flame, and extends in the drooping direction due to its own weight.

  When the shutter curtain 11 in the closed state is further extended by heat deformation or the like, a load due to slack is applied to the seat plate 23. When a load is applied to the seat plate 23, the seat plate 23 rotates in the forward tilt direction away from the building side, as shown in FIG. 4, with the portion of the extended plate portion 53 that the raised upper end portion 61 contacts as a fulcrum 67. . As the seat plate 23 rotates forward and tilted, the shutter curtain 11 above the seat plate 23 hangs down with the slack portion 69 protruding forward from the lower frame 39 as shown in FIG. The seat plate 23 tilted forward is not easily subjected to heat directly from the front because the slack portion 69 serves as a barrier. That is, by setting the fulcrum 67 by the front standing plate 41 in the vicinity of the indoor side end portion of the seat plate 23, the seat plate 23 pushed down by the shutter curtain 11 falls to the outdoor side, and the shadow of the steel shutter curtain 11 which is difficult to melt. It is made to enter.

  Further, since the slack portion 69 hangs down to the front of the lower frame 39, load support is also shared by the storage portion 19, and the load that has been applied to the lower frame 39 by the slack portion 69 is reduced. Will be.

  In this manner, in the seat plate structure of the fire-proof window shutter, the seat plate 23 enters the shade of the shutter curtain 11 so that it is difficult to receive direct heating. By making the seat plate 23 difficult to melt, it is not necessary to form the aluminum seat plate 23 thickly, reducing the raw materials and reducing the cost. Further, since the weight of the seat plate 23 does not increase, it is possible to make the non-fire-proof type shutter device and the winding spring common.

  Furthermore, since the lower frame 39 only needs to abut the front plate 41 on the building side of the extended plate portion 53, the projecting length A from the building can be shortened compared to the conventional lower frame, which also reduces the material cost. And cost can be reduced.

Next, a modification of the above embodiment will be described.
6 is a cross-sectional view of a seat plate structure according to a modified example in which the U-shaped bending portion 71 is provided on the locking plate part 63, and FIG. 7 is a shutter that is loosened by heat in the seat plate structure according to the modified example shown in FIG. It is an operation | movement figure showing the curtain 11.
In the seat plate structure according to this modified example, when the seat plate 23 rotates in the forward tilting direction away from the building side with the standing upper end 61 as a fulcrum 67 due to a reduction in the suspension force of the shutter curtain 11, the standing upper end 61. A U-shaped bending portion 71 shown in FIG.
The seat plate 23 tilted forward shown in FIG. 7 locks the U-shaped bending portion 71 to the standing upper end portion 61, so that it is difficult to separate from the standing upper end portion 61. That is, it is possible to keep the forward leaning posture, and it is possible to easily generate the sufficient slack portion 69, and it is difficult to remove the forwardly inclined seat plate 23 from the lower frame 39.

FIG. 8 is a cross-sectional view of a seat plate structure according to a modified example in which the extended plate rear end portion 65 and the locking plate portion 63 are continuously provided by the curved portion 73.
In the seat plate structure according to this modification, the extended plate rear end portion 65 and the locking plate portion 63 are continuously provided by a curved portion 73.
When the shutter curtain 11 is lowered, the seat plate 23 pushed down is rotated by the curved portion 73 in a forward tilting direction without being caught by the standing upper end portion 61. That is, the slack portion 69 (see FIG. 7) can be positively easily generated, and the seat plate 23 can be smoothly guided to the forward tilt posture.

9A is a cross-sectional view of a seat plate structure according to a modified example in which the engaging claw portion 75 is provided on the standing upper end 61, and FIG. 9B is a diagram illustrating the shutter curtain 11 that has been slackened by heat in the modified example of FIG. FIG.
The seat plate structure according to this modification has an engagement claw portion 75 that engages with the U-shaped bent portion 71 of the seat plate 23 rotated forward and restricts the separation of the U-shaped bent portion 71 from the standing upper end portion 61. It is provided on the standing upper end 61.
The U-shaped bending portion 71 that is locked to the standing upper end portion 61 is further locked by a locking plate portion 63 provided on the standing upper end portion 61, and the seat plate 23 that rotates more greatly in the forward tilt direction is attached to the lower frame. It becomes possible to continue to be locked to 39. As a result, it becomes possible to form a more sufficient slack portion 69, and the aluminum alloy seat plate 23 can be covered from the flame by the steel slack shutter curtain 11, and the U-shaped bent portion 71 is locked to the locking plate portion. Therefore, the seat plate 23 tilted forward can be further prevented from coming off the lower frame 39.

DESCRIPTION OF SYMBOLS 11 ... Shutter curtain 13 ... Building opening 15 ... Fire window shutter (window shutter device)
DESCRIPTION OF SYMBOLS 19 ... Storage part 23 ... Seat plate 35 ... Guide rail 39 ... Lower frame 41 ... Standing up board 51 ... Vertical board part 53 ... Extension board part 57 ... Center of gravity 59 ... Curtain extension line 61 ... Standing upper end part 63 ... Locking board Part 65 ... Extension plate rear end part 67 ... Support point 71 ... U-shaped bending part 73 ... Bending part 75 ... Engaging claw part

Claims (3)

Made of steel that opens and closes the building opening up and down by being guided by a pair of left and right guide rails sandwiching the building opening and being drawn out and wound up from a storage unit installed above the building opening. With shutter curtains,
A lower frame provided laterally across the lower side of the pair of left and right guide rails;
A seat having a vertical plate portion suspended from the lower end of the shutter curtain and connected and supported at the upper end of the shutter curtain, and an extended plate portion extending below the vertical plate portion and extending to the building opening side. The board,
A standing front plate that is formed standing up on the front side of the lower frame and in which the standing upper end comes into contact with the extended plate portion on the building side from below the curtain extension line passing through the center of gravity of the seat plate,
A locking plate portion that is suspended from the rear end portion of the extension plate on the building side of the extension plate portion and faces the front plate .
A seat plate structure for a fireproof window shutter, characterized in that the extended plate rear end portion and the locking plate portion are continuously provided by a downward arcuate curved portion . A fire plate shutter seat plate structure according to claim 1,
Bend portion wherein that abolish engaging the upright upper end the locking when the seat plate by a reduction in suspension have force of the shutter curtain is rotated before the tilting direction away from the building side fulcrum the standing upper portions A seat plate structure for a fireproof window shutter, which is provided at a tip of a plate portion. A seat plate structure for a fire window shutter according to claim 2 ,
An engagement claw portion that engages with the bent portion of the seat plate that has been rotated forward and restricts detachment of the bent portion from the upstanding upper end portion is provided at the upstanding upper end portion. Window shutter seat plate structure.

Images