JP6017191B2 - A lintel structure of a shutter case and a shutter device including the structure - Google Patents

Description

The present invention relates to a lintel structure of a shutter case and a shutter device having the structure.

At the lower end of the shutter case, a groove portion extending in the opening width direction is formed between the lower surface of the case and the inner lintel, and the shutter curtain moves up and down through the groove portion. A clearance (gap) is provided between the shutter curtain that moves up and down through the groove and the front end of the inner lintel so that the shutter curtain does not contact the inner lintel when the shutter curtain moves up and down ( FIG. 1 of Patent Document 1 and FIG. 8 of the present application).

When a fire-proof shutter with fire-proof performance is provided at the opening, if the gap between the shutter curtain and the front edge of the inner lintel is large, the fire-proof shutter will shut off a fire that occurs outdoors. There is a possibility that a fire will come out indoors through the gap between the inner lintel and the shutter curtain. Further, when combustible material (such as an opening / closing device element) burns in the shutter case, there is a possibility that a fire may go out indoors through the gap between the inner lintel 6 'and the shutter curtain (FIG. 8). reference). In addition, combustible materials (such as a sheet-like damping member attached to the inner surface of the case) in the shutter case may fall into the room through the gap between the inner lintel and the shutter curtain.
JP 2003-193769 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a shutter case and a shutter device that have improved fire prevention performance by having a feature in the lintel structure of the shutter case.

The technical means adopted by the present invention to solve this problem are as follows:
The front end of the lintel located at the lower end of the shutter case extends in the opening width direction facing the shutter curtain moving path,
The front end of the lintel is a lintel structure of a shutter case, which is formed in a concave shape in a plan view so that a central portion of the front end is retracted to the rear side of both end portions of the front end.
In one aspect, the bottom surface of the lintel includes a central narrow portion and wide portions at both ends, and the front end of the bottom surface includes a front end of the narrow portion and a front end of the wide portion. It is configured.
In the embodiment described later, the concave front end is stepped from the front end of the narrow portion and the front end of the wide portion, but the concave front end is a continuous end that is arcuate or arcuate in plan view. It may be an edge.

  In one aspect, a rising piece is formed at the front end of the bottom surface of the lintel, and the height of the rising piece at the central portion of the front end is higher than the height of the rising piece at both end portions of the front end.

Other technical means adopted by the present invention are:
A shutter case provided above the opening;
A winding shaft provided in the shutter case and extending in the opening width direction;
In the shutter case, an opening and closing device arranged near one side of the opening width direction,
A shutter curtain whose upper end is connected to the take-up shaft, and both ends in the width direction move up and down while being guided by guide rails on the left and right sides of the opening;
With
The front end of the lintel located at the lower end of the shutter case extends in the opening width direction facing the shutter curtain moving path,
The front end of the lintel is formed in a concave shape in plan view so that the central portion of the front end is retracted to the rear side than the both end portions of the front end.
Shutter device.

In one aspect, the bottom surface of the lintel includes a central narrow portion and wide portions at both ends, and a distance D2 between the front end of the narrow portion and the shutter core is equal to the front end of the wide portion and the shutter. Larger than the gap D1 with the core,
The length L1 in the opening width direction of the wide portion on the same side as the switch is larger than the length of the switch.

  In one aspect, the winding shaft includes an outer cylinder that houses the components of the winding shaft.

  In the present invention, the front end of the lintel is formed in a concave shape in a plan view so that the central portion of the front end is retracted to the rear side of the both end portions of the front end. The clearance at both ends in the opening width direction, where flames are likely to occur, is reduced while preventing contact with the fire, so that a fire comes out indoors from the clearance, or parts (for example, heat peels off from the inner surface of the case) It is possible to prevent the vibration damping member) from dropping.

It is a schematic side view of a window shutter. It is a partial top view of a window shutter. It is (A) top view of an inner lintel, (B) The front view seen from the outdoor side, (C) Side view. It is a perspective view of an inner lintel. It is a top view of the window shutter which shows the relationship between an inner lintel and a shutter curtain, (A) The position on the design of a shutter curtain, (B) The state which the shutter curtain bulged indoor side is shown. It is a front view of a winding shaft. It is a fragmentary longitudinal cross-sectional view of a window shutter. It is a figure explaining the effect | action of the conventional shutter case.

As shown in FIG. 1 and FIG. 2, the window shutter device is located above the window opening and is disposed on both sides of the window opening in the width direction of the shutter case 1 attached to the outer wall W. Left and right guide rails 2 provided at a position taken out with respect to the outer wall W, a support frame 20 attached to the outer wall W and supporting the left and right guide rails 2 in a take-out shape, and formed in the shutter case 1. The winding shaft 3 provided in the storage portion and the upper end are connected to the winding shaft 3, and the both ends in the width direction are guided to the guide rail 2 by being wound / drawn by the winding shaft 3. A shutter curtain 4 that moves up and down to open and close the outdoor portion of the window opening, and a lower frame (draining plate) 5 that is positioned below the window opening and attached to the outer wall W in a take-out manner. . The window shutter is one of the preferred embodiments to which the present invention is applied, and the present invention is not limited to the window shutter.

The shutter case 1 includes a case upper surface plate 10 covering the space above the winding shaft 3, a case front plate 11 covering the front space of the winding shaft 3, and a case lower surface plate extending rearward from the lower end of the case front plate 11. 12 and an inner lintel 6 that forms the lower surface of the rear side of the shutter case 1. A long member 120 extending in the opening width direction is provided at the rear end of the case lower surface plate 12, and there is a gap between the rising piece of the long member 120 and the rising piece at the front end of the inner lintel 6 in the opening width direction. An extending groove G is formed. The upper end of the guide rail 2 is located at both ends of the groove part G in the opening width direction, and the groove part G is a moving path of the shutter curtain 4. In the illustrated embodiment, the rear peripheral surface of the winding shaft 3 in the shutter case 1 is located above the groove G, and the shutter curtain 4 is wound from the rear peripheral surface of the winding shaft 3. It is fed out.

The winding shaft 3 extends in the opening width direction, and both end portions in the length direction are respectively supported by the surface portions of the left and right brackets 7 extending from the building housing W (in FIG. 5, in the winding shaft 3). The support portions at both ends of the are omitted.) As shown in FIG. 6, the winding shaft 3 includes an internal shaft 30, a wheel 31 externally mounted on the internal shaft 30, an intermediate wheel 32, a spring 33, and a wheel 31 externally mounted on the internal shaft 30 and the internal shaft 30, An intermediate wheel 32 and an outer cylinder 34 that houses a spring 33 are provided.

In the shutter case 1, an opening / closing machine M is disposed above the case lower surface plate 12 at a position close to one side in the opening width direction. The opening / closing machine M is spaced apart from one end of the winding shaft 3 in the length direction, and the output of the opening / closing machine M is transmitted to the winding shaft 3 so that the winding shaft 3 is rotationally driven. It has become.

A vibration damping member (not shown) may be provided on the inner surface of the case upper surface plate 10 of the shutter case 1 in order to suppress generation of unpleasant noise due to raindrops or the like. The damping member is, for example, a sheet body obtained by bonding resin rubber and an aluminum plate material, and includes a resin element that is easily affected by high temperatures. The vibration damping member is made of, for example, a rectangular sheet, and a plurality of vibration damping members are pasted at intervals in the width direction of the shutter case 1. When the shutter case 1 is exposed to a high temperature during a fire, the sheet-like damping member may be softened and peeled off from the lower surface of the case upper surface plate 10 and dropped to the lower portion of the shutter case 1. When the damping member that has fallen to the lower part of the shutter case is ignited, there is a risk that a flame may come out of the case through a gap at the lower part of the shutter case or fall into the room through the gap.

In the present specification, as shown in FIG. 2, the slat center line in a state (designed slat position) where the shutter curtain 4 is housed in a straight line shape in the opening width direction is referred to as a shutter core S. In other words, the shutter core S is a vertical plane that passes through the center of the groove portions of the left and right guide rails 2 in the indoor and outdoor directions (see FIG. 7).

As shown in FIGS. 3 and 4, the inner lintel 6 includes a horizontal bottom surface 60 extending in the opening width direction, and the bottom surface 60 forms a lower surface behind the shutter case 1. The front end of the bottom surface 60 of the inner lintel 6 is opposed to the shutter curtain moving path and extends in the opening width direction (length direction of the groove portion G). The front end of the bottom surface 60 of the inner lintel 6 is formed in a concave shape in plan view so that the central portion of the front end is retracted to the rear side from both end portions of the front end, and the central portion of the front end is the front end It is further away from the shutter core S than both ends of the shutter.

Specifically, as shown in FIGS. 2 to 4, the bottom surface 60 having a concave front end includes a wide portion 61 at both ends in the opening width direction and a narrow portion 62 at the central portion. The front end 620 of the narrow portion 62 is retracted to the rear side (outer wall side) with respect to the front ends 610 of the left and right wide portions 61. As shown in FIG. 7, the distance D2 between the front end 620 of the narrow portion 62 and the shutter core S is greater than the distance D1 between the front end 610 of the wide portion 61 and the shutter core S. Therefore, as shown in FIG. 2, the clearance C <b> 2 between the front end 620 of the narrow portion 62 and the shutter curtain 4 in a state where the shutter curtain 4 is housed in a straight line shape in the opening width direction (designed slat position). Is larger than the clearance C <b> 1 between the front end 610 of the wide portion 61 and the shutter curtain 4.

Even if the distance D2 between the front end 620 of the narrow portion 62 and the shutter core S (the clearance C2 between the front end 620 of the narrow portion 62 and the shutter curtain 4) is in a state where the shutter curtain 4 bulges indoors, It is set so that the indoor side surface portion of the bulged shutter curtain 2 does not contact the front end 620 of the narrow portion 62 (see FIG. 5B). Since both ends in the width direction of the shutter curtain 4 are constrained in the groove of the guide rail 2, both ends in the width direction of the shutter curtain 4 are designed even when the shutter curtain 4 bulges indoors. Therefore, the distance D1 between the front end 610 of the wide portion 61 and the shutter core S (the clearance C1 between the front end 610 of the wide portion 61 and the shutter curtain 4) is made as small as possible. Can do. In the conventional inner lintel, since the distance D ′ (see FIG. 8) between the front end and the shutter core is constant in the opening width direction, the distance D ′ is set in consideration of the case where the shutter curtain bulges indoors. It is necessary to set large.

As shown in FIG. 5, the length dimension L <b> 1 of one wide portion 61 located on the opening / closing machine M side is set to be larger than the length of the opening / closing machine M. One side in the length direction of the opening / closing machine M is disposed close to the bracket 7 and substantially coincides with the position of one side in the length direction of the wide portion 61. In the width direction, the width is within the width corresponding to the one wide portion 61. In the event of a fire, the switch M is the most easily ignited as an element in the shutter case 1 (it is considered that the presence of oil components and grease is one factor), and in the width direction of the shutter case 1, the switch M is There is a risk of a flame on the side where it is located. Further, in the width direction of the case upper surface plate 10 of the shutter case 1, the vibration damping member (combustible material) positioned above the opening / closing machine M may fall or ignite due to the influence of the flame. In the present embodiment, the bottom surface 60 on the side where the opening / closing machine M of the inner lintel 6 is located is the wide portion 61, and the clearance C1 between the front end 610 of the wide portion 61 and the shutter curtain 4 is narrow. Even if the switch M is ignited, it is possible to suppress the occurrence of fire from the clearance C1 to the indoor side or the fall of the ignited combustible material as compared with the conventional inner lintel. .

As described above, the components (the internal shaft 30, the wheel 31, the intermediate wheel 32, and the spring 33) of the winding shaft 3 of the present embodiment are housed in the outer cylinder 34. When exposed to heat during a fire, the components of the take-up shaft 3 may ignite, but if ignited, they are guided to the inner peripheral surface of the outer cylinder 34 and the length of the take-up shaft 3 is increased. Fire will come out from the end in the direction. In the present embodiment, on the bottom surface 60 of the inner lintel 6, the portions corresponding to both ends in the length direction of the winding shaft 3 are wide portions 61, and the front end 610 of the wide portion 61, the shutter curtain 4, and the like. Since the clearance C1 of the winding shaft 3 is narrow, even if a fire comes out from the end of the winding shaft 3 in the length direction, the clearance C1 moves to the indoor side compared to the conventional inner lintel. It can suppress that a fire comes out or the combustible material which ignited falls.

As shown in FIGS. 3 and 4, a rising piece is formed at the front end of the bottom surface 60 of the inner lintel 6, and the height of the rising piece 64 at the front end 620 of the narrow portion 62 is the front end of the wide portion 61. 610 is higher than the height of the rising piece 63. The height of the rising piece 64 is deformed so that the rising piece 64 falls to the outdoor side (the groove G side) due to the heating of the inner lintel 6 or the flame flow that tries to blow around the shutter case 1. In such a case, the dimension is such that the clearance C2 between the front end 620 of the narrow portion 62 and the shutter curtain 4 can be at least partially blocked.

The inner lintel 6 includes a rear rising piece 65 at the rear end of the bottom surface 60, and a horizontal piece 66 (having a smaller length than the bottom surface 60) extending horizontally from the upper end of the rear rising piece 65 to the rear. A mounting piece 67 that rises from the front end of the horizontal piece 66 and a hanging piece 68 at both ends in the length direction of the bottom surface 60 are provided. In the inner lintel 6, hanging pieces 68 at both ends in the length direction of the bottom surface 60 are supported by the upper end of the support frame 20, and the mounting pieces 67 are fixed to the housing (outer wall W) by screws.

In the present embodiment, the bottom surface 60 of the inner lintel 6 is formed from the central narrow portion 62 and the wide portions 61 at both ends, and the front end of the bottom surface 60 is defined as the front end 620 of the narrow portion 62 and the wide portion. Since the front end 610 of 61 has a concave shape in plan view, as shown in FIG. 5B, even when the shutter curtain 4 bulges indoors when the shutter curtain 4 moves up and down, Contact with the front ends 610 and 620 of the lintel 6 is prevented. Since the both ends in the width direction of the shutter curtain 4 are restrained in the grooves of the left and right guide rails 2 when the shutter curtain 4 is moved up and down, the both ends in the width direction of the shutter curtain 4 are greatly enlarged from the mode shown in FIG. The clearance C1 at both ends in the opening width direction where the flame does not move easily and is easy to generate a flame can be set small, and a fire is emitted from the clearance C1 to the indoor side or a part (for example, a control peeled off from the case inner surface by heat). The vibration member) can be prevented from falling as much as possible.

DESCRIPTION OF SYMBOLS 1 Shutter case 3 Winding shaft 6 Inner lintel 60 Bottom surface 61 Wide part 610 Front end 62 Narrow part 620 Front end 63 Rising piece 64 Rising piece

Claims (4)

The lower end of the shutter case is a lintel located on the rear side that is close to the building housing, a case bottom plate located on the front side that is far from the building housing, a front end of the lintel, and a rear end of the case bottom plate consists, and the shutter curtain movement path formed between the front end of the lintel extend in the opening width direction to face the shutter curtain movement path,
The front end of the lintel is a lintel structure of a shutter case, wherein the central portion of the front end is formed in a concave shape in plan view so that the central portion of the front end is retracted to the rear side from both end portions of the front end.   The rising piece is formed at the front end of the bottom surface of the lintel, and the height of the rising piece at the central portion of the front end is higher than the height of the rising piece at both end portions of the front end. The lintel structure of the shutter case. A shutter case provided above the opening;
A winding shaft provided in the shutter case and extending in the opening width direction;
In the shutter case, an opening and closing device arranged near one side of the opening width direction,
A shutter curtain whose upper end is connected to the take-up shaft, and both ends in the width direction move up and down while being guided by guide rails on the left and right sides of the opening;
With
The lower end of the shutter case, a lintel situated on the rear side is the side close to building structures, and the case lower plate positioned on the front side is side far from building structures, after the casing lower surface plate and the front end of the lintel a shutter curtain movement path formed between the end consists, front end of the lintel extend in the opening width direction to face the shutter curtain movement path,
The front end of the lintel is formed in a concave shape in plan view so that the central portion of the front end is retracted to the rear side than the both end portions of the front end.
Shutter device. The bottom surface of the lintel includes a narrow portion at the center and wide portions at both ends, and a distance D2 between the front end of the narrow portion and the shutter core is a distance D1 between the front end of the wide portion and the shutter core. Bigger than
The length L1 in the opening width direction of the wide portion on the same side as the switch is larger than the length of the switch.
The shutter device according to claim 3.

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