Fire shutters

Abstract

To satisfactorily close a side part of a rail when an opening is fully closed.SOLUTION: A rail 6 is laid on a floor surface FL so as to be approximately orthogonal to an opening closed by a shutter, a seat plate 4 of a shutter curtain 2 is provided with a vertical plate-shaped part 40, a recessed part 42 opened downward is formed in the plate-shaped part 40 corresponding to the rail 6, and a guide part 5 made up of a pair of rising width pieces 50 and having an opened upper end is provided on the floor surface FL adjacently to the side of the rail 6, and when an opening is fully closed, a side edge part 400 of the recessed part 42 is positioned in the guide part 5, and the width piece 50 of the guide part 5 closes a side part of the rail 6.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a fire shutter, and more particularly to a fire shutter that partitions a portion of a floor surface where rails are laid.

Background Art

[0002] Matehan is an abbreviation of "Material Handling" and refers to "handling related to the movement of all items of raw materials, work-in-progress, and finished products within production bases and logistics bases". Optimizing matehan can lead to a significant improvement in the productivity of the entire factory. One of the main operations of matehan is the operation of transporting items within factories and warehouses, and matehan equipment includes rails laid on the floor surface.

[0003] In factories and warehouses, there may be cases where an opening with rails laid on the floor surface is closed with a shutter to form a fire partition. When forming a fire partition, it is important that no fire-disadvantageous gaps are formed between the first side space and the second side space of the shutter in the closed position. However, when rails are laid across the floor surfaces of the first side space and the second side space, a gap will be formed at the lower part of the shutter.

[0004] Patent Document 1 discloses a structure in which a fire sheet is provided at the lower part of the shutter body corresponding to the periphery of the rail. However, usually, the side part of the rail has a concave-convex cross-sectional shape, so there remains a problem in completely closing the side part of the rail without gaps with an element that descends from above when closing the opening. In addition, some rails are provided with pipes (for passing predetermined electric wires, etc.) on the side parts. In this case, the shape of the side part of the rail becomes even more complicated, and it becomes even more difficult to completely close the side part of the rail without gaps.

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] The objective of the present invention is to provide a fire shutter that partitions an area on the floor where rails are laid, and which effectively seals the lateral portion of the rails when the opening is fully closed. [Means for solving the problem]

[0006] The technical means employed in this invention are: In a fire shutter in which both ends of the shutter curtain in the width direction are guided down by left and right guide rails to close the opening formed between the guide rails and form a fire compartment, Rails are laid on the floor surface so as to be approximately perpendicular to the opening. The base plate at the lower end of the shutter curtain has a vertical plate-like portion, and the plate-like portion has a recess that opens downward at a predetermined portion in the width direction corresponding to the rail. The recess consists of a space enclosed by a pair of side edges and an upper edge, and the pair of side edges is defined by a pair of side edge portions formed from the plate-like portion. On the floor surface, adjacent to one or both sides of the rail, a pair of rising visible pieces are provided, each having an open upper end, as guide portions. When the opening is fully closed, at least one side edge is positioned within the guide portion, and the visible piece of the guide portion blocks at least one side portion of the rail. It's a fire shutter.

[0007] In one embodiment, the seat plate comprises the plate-like portion and a horizontal portion formed at the lower end of the plate-like portion, The horizontal portion is not formed at the lower end of the side edge.

[0008] In one embodiment, the guide portion has a U-shape in cross-section, comprising the pair of visible pieces and a bottom piece, the bottom piece being in contact with or close to the side surface of the rail.

[0009] In one embodiment, a pipe is provided protruding from at least one of the side surfaces, and the guide portion is adjacent to the lower part of the pipe on the side surface.

[0010] In one embodiment, the rail comprises a head, a bottom, and a rising body connecting the head and the bottom. The guide portion is adjacent to the side surface of the abdomen.

[0011] In one embodiment, the guide portion is provided adjacent to both sides of the rail, When the opening is fully closed, each side edge is positioned within each guide portion, and the visible portion of the guide portion covers both lateral parts of the rail. [Effects of the Invention]

[0012] In this invention, a recess is formed in the base plate at the lower end of the shutter curtain, corresponding to the rail on the floor surface, and a guide portion is provided on the floor surface adjacent to the side of the rail to close the lateral portion. When the opening is fully closed, the recess receives the rail, and the lateral edge portion (the plate-like part of the base plate) that defines the lateral edge of the recess is located within the groove of the guide portion. At this time, the lateral portion of the rail is mainly closed by the visible piece of the guide portion. [Brief explanation of the drawing]

[0013] [Figure 1] This is a front view of the shutter device (fully closed position) according to this embodiment. [Figure 2] This is a front view of the shutter device according to this embodiment (in the state just before it is fully closed). [Figure 3] This is a magnified view of the lower part of Figure 1. [Figure 4] This is a magnified view of the lower part of Figure 2. [Figure 5] Figure 3 shows a close-up, side view, and cross-sectional view of the right-hand rail and the corresponding seat plate. [Figure 6] Figure 4 shows a close-up and side view of the right-hand rail and corresponding seat plate. [Figure 7] This is a diagram showing the front view of FIG. 5 in detail. [Figure 8] This is a diagram showing the guide part. [Figure 9] This is the front view of the shutter device (fully closed posture) according to another embodiment. [Figure 10] This is the front view of the shutter device (state slightly before reaching the fully closed posture) according to another embodiment. [Figure 11] This is a partially enlarged view of the lower part of FIG. 9. [Figure 12] This is a partially enlarged view of the lower part of FIG. 10.

Mode for Carrying Out the Invention

[0014] FIG. 1 and FIG. 2 are front views of the shutter device according to the present embodiment. FIG. 1 shows the fully closed state of the shutter, and FIG. 2 shows the state where the shutter is approaching the fully closed state. The shutter device includes left and right guide rails 1 at the opening, and a winding shaft (not shown) provided in a shutter case C above the opening at the upper end. The shutter curtain 2 is connected to the winding shaft, and both ends in the width direction are guided in the groove portions of the guide rails 1 to open and close the opening. The shutter curtain 2 is composed of a plurality of slats 3 that are swingably connected to each other, and a seat plate 4 that is swingably connected to the lowermost slat 3 of the plurality of slats 3. When the opening is fully open, the shutter curtain 2 is wound around the winding shaft. During normal opening and closing, the winding shaft is rotated by an opener M to lift and lower the shutter curtain 2 electrically to open and close the opening. In case of a fire, an automatic closing device (not shown) operates in response to the detection of fire smoke, and the shutter curtain 2 descends by its own weight to close the opening.

[0015] In this embodiment, multiple rails 6A and 6B (note that they may be referred to as "rail 6" in this specification) are laid parallel to each other on the floor surface FL, and the direction in which the rails 6 extend is perpendicular to the opening between the left and right guide rails 1, i.e., the vertical plane formed by the shutter curtain 2 in its closed position. In the illustrated embodiment, for convenience, two rails 6A and 6B with different cross-sectional shapes are shown, but the number and type of rails 6 are not limited.

[0016] As shown in Figures 4, 6, and 7, the rail 6 according to this embodiment has a head portion 60, a bottom portion 61, and a rising body portion 62 connecting the head portion 60 and the bottom portion 61, and has an I-shaped cross-section. In the illustrated embodiment, the basic configuration is the same except that rail 6A is thinner than rail 6B.

[0017] As shown in Figure 7, the head portion 60 of the rail 6B has a horizontal top surface 600, a pair of vertical sides 601, and a pair of horizontal bottom surfaces 602; the bottom portion 61 has a horizontal bottom surface 610, a pair of vertical sides 611, and a pair of horizontal top surfaces 612; and the body portion 62 has a pair of vertical sides 620.

[0018] As shown in Figure 6, the rail 6B has a width dimension W1 and a height dimension H1. In this embodiment, as shown in Figure 7, each side 601 of the head 60 and each side 611 of the bottom 61 of the rail 6B are located on the same vertical plane (i.e., the head 60 and the bottom 61 have the same width dimension W1), the dimension between the two sides 601 of the head 60 (the dimension between the two sides 611 of the bottom 61) is the width dimension W1 of the rail 6, and the dimension between the top surface 600 of the head 60 and the bottom surface 610 of the bottom 61 is the height dimension H1 of the rail 6. Note that the width dimensions of the head 60 and the bottom 61 may be different. For example, the side 611 of the bottom 61 may be located inward from the side 601 of the head 60. In this case, the width dimension W1 of the rail 6 is determined by the width dimension of the head 60.

[0019] A pipe 63 is provided protruding from the upper part of one side surface 620 of the body 62 of rail 6B, located below one lower surface 602 of the head 60. The pipe 63 is located inside one side surface 601 of the head 60 and does not protrude beyond that side surface 601. Rail 6A has basically the same configuration, except that the thickness dimensions of the head 60, bottom 61, and body 62 are smaller. In the illustrated embodiment, both rails 6A and 6B are equipped with a pipe 63, but it should be noted that the present invention can also be applied to rails that are not equipped with a pipe 63.

[0020] Each slat 3 is a long steel member extending in the direction of the opening width, and as shown in Figure 6, it consists of a plate-shaped body 30, an upper engaging portion 31 integrally formed on the upper side of the body 30, and a lower engaging portion 32 integrally formed on the lower side of the body 30. In adjacent slats 3, the upper engaging portion 31 of the lower slat 3 interlocks with the lower engaging portion 32 of the upper slat 3.

[0021] The seat plate 4 is a long steel member extending in the opening width direction, and as shown in Figure 6, it has an L-shape in side view, consisting of a vertical plate-like portion 40 and a horizontal portion 41 at the lower end of the plate-like portion 40. Note that the side view of the seat plate 4 is not limited to an L-shape, and may, for example, be an inverted T-shape in side view. The upper end of the plate-like portion 40 of the seat plate 4 is locked to the lower engaging portion 32 of the slat 3 directly above it. As shown in Figures 2 and 4, the seat plate 4 is cut out at a predetermined portion in the width direction (the portion corresponding to the rail 6), and the cutout forms a recess 42 that opens downward. The recess 42 consists of a space enclosed by a pair of vertical side edges 420 and a horizontal upper edge 421, and its lower end is open.

[0022] As shown in Figure 6, the width dimension W2 of the recess 42 in the seat plate 4 is slightly larger than the width dimension W1 of the rail 6, and the height dimension H2 of the recess 42 (depth dimension from bottom to top) is slightly larger than the height dimension H1 of the rail 6, so that the rail 6 is received when the opening is fully closed. In the illustrated configuration, two recesses 42 are formed in predetermined parts in the width direction of the seat plate 4, and when the shutter curtain 2 descends to the fully closed position, the rail 6A is received in one recess 42 and the rail 6B is received in the other recess 42 as it descends, so that the horizontal part 41 at the lower end of the seat plate 4 touches the floor surface FL.

[0023] The pair of side edges 420 of the recess 42 formed in the seat plate 4 are opposed to each other across the space of the recess 42 and are defined by a pair of side edge portions 400 formed from the plate-like portion 40, and the lower end 410 of the side edge portion 400 does not have a horizontal portion 41 (see cross-sectional view in Figure 5). In this embodiment, the seat plate 4 has the plate-like portion 40 and the horizontal portion 41 cut out by a predetermined width dimension W2 at a predetermined location in the width direction, and furthermore, only the horizontal portion 41 is cut out by a predetermined width dimension W3 that exceeds the predetermined width dimension W2, and the width dimension W4 of each side edge portion 400 is [W3-W2] / 2 (see Figure 6).

[0024] On the floor surface FL, guide sections 5 with open upper ends are provided adjacent to both sides of the rail 6, and when the opening is fully closed, the left and right side edges 400 are received into the grooves of the left and right guide sections 5. In this embodiment, on rails 6A and 6B, a pipe 63 is provided protruding from one side surface 620 of the body 62, and on rails 6A and 6B, a guide section 5A is provided adjacent to one side surface 620, and a guide section 5B is provided adjacent to the other side surface 620, with the height dimension of guide section 5A being lower than the height dimension of guide section 5B. Guide sections 5A and 5B have substantially the same configuration except for their height dimensions. Note that in this specification, guide sections 5A and 5B may be represented by the guide section 5.

[0025] As shown in Figure 8, the guide section 5A has a U-shape in cross-section, consisting of a pair of spaced-apart facing pieces 50 and a bottom piece 51, with a groove formed between the pair of facing pieces 50 to receive the side edge 400. A pair of lower pieces 52 extending horizontally in a direction away from each other are formed at the lower ends of the pair of facing pieces 50 of the guide section 5, and the guide section 5 is installed by fixing the lower pieces 52 to the floor surface FL with the bottom piece 51 adjacent to the side of the rail 6. Note that the description of the guide section 5A can be used in conjunction with the description of the guide section 5B.

[0026] In this embodiment, the upper portion of the pair of visible pieces 50 is an upper guide piece 500 that extends upward in an expanding manner, and the visible piece 50 consists of a main surface portion which is a vertical surface and an upper guide piece 500 which is integrally formed on the upper side of the main surface portion. The dimension (groove width) between the main surface portions (groove portion) of the pair of visible pieces 50 of the guide portion 5 is greater than the thickness dimension of the plate-like portion 40 of the seat plate 4 and smaller than the width dimension in the short direction of the horizontal portion 41 (dimension perpendicular to the opening width direction). In this embodiment, the guide portion 5 is provided with a pair of inclined upper guide pieces 500, but for example, an inclined upper guide piece 500 may be formed only on the upper end portion of one of the visible pieces 50.

[0027] The upper end of the visible piece 50 of the guide section 5 is defined by a horizontal upper edge 501. In this embodiment, the visible piece 50 extends below the lower end 510 of the bottom piece 51, and the bottom side of the lower portion of the visible piece 50 is defined by a horizontal lower edge 502 (located at the same height as the lower end 510) and a bottom-side vertical piece 503 hanging down from the lower edge 502. The width dimension of the lower end of the visible piece 50 is narrower by the length dimension of the lower edge 502, and this narrow dimension is the same as the width dimension of the bottom piece 52. The leading edge of the visible piece 50 (the edge on the side separated from the bottom piece 51) is defined by a vertical side edge 504.

[0028] The height dimension of the guide section 5A is the height from the floor surface FL to the lower surface 630 (see Figure 7) of the pipe 63 that protrudes from one side surface 620. The height dimension of the guide section 5B is the height from the floor surface FL to the lower surface 602 of the head section 60. The guide section 5 is fixed with bolts 53, with the bottom piece 51 in contact with the side surface of the rail 6 (side surface 620 of the body 62) and the lower piece 52 in contact with the floor surface FL.

[0029] More specifically, the height dimension of the bottom piece 51 of the guide section 5A (the height dimension of the bottom side portion of the visible piece 50) corresponds to the dimension between the upper surface 612 of the bottom 61 of the rail 6B and the lower surface 630 of the piping 63, the width dimension of the lower edge 502 of the guide section 5A is approximately the same as the width dimension of the upper surface 612 of the bottom 61 of the rail 6B, and the height dimension of the bottom vertical piece 503 of the guide section 5A is approximately the same as the height dimension of the side surface 611 of the bottom 61 of the rail 6B. When the guide portion 5A is provided adjacent to the rail 6B, the bottom piece 51 of the guide portion 5A abuts against one side surface 620 (the lower part of the piping 63) of the body 62 of the rail 6B, the lower edge 502 abuts against the upper surface 612 of the bottom portion 61 of the rail 6B, and the bottom vertical piece 503 abuts against the side surface 611 of the bottom portion 61 of the rail 6B, so that the guide portion 5A closes one side of the rail 6B.

[0030] The height dimension of the bottom piece 51 of the guide section 5B (the height dimension of the bottom side portion of the visible piece 50) is approximately the same as the height dimension of the other side surface 620 of the body 62 of the rail 6B, the width dimension of the lower edge 502 of the guide section 5B is approximately the same as the width dimension of the upper surface 612 of the bottom 61 of the rail 6B, and the height dimension of the bottom vertical piece 503 of the guide section 5B is approximately the same as the height dimension of the side surface 611 of the bottom 61 of the rail 6B. When the guide section 5B is installed adjacent to the rail 6B, the bottom piece 51 of the guide section 5B abuts against the other side surface 620 of the body 62 of the rail 6B, the lower edge 502 abuts against the upper surface 612 of the bottom 61 of the rail 6B, and the bottom vertical piece 503 abuts against the side surface 611 of the bottom 61 of the rail 6B, so that the guide section 5B closes the other side of the rail 6B.

[0031] As shown in Figures 5 and 7, when the opening is fully closed, the rail 6 is received within the recess 42, and each side edge 400 is positioned in the groove of the guide portion 5. The upper edge 421 of the recess 42 is close to or in contact with the upper surface 600 of the head 60 of the rail 6, and the upper ends of the left and right side edges 400 are close to or in contact with the side surfaces 601 of the head 60 of the rail 6. The lower lateral portion of the head 60 (the lateral portion of the waist 62 and bottom 61) of the rail 6 is closed by the visible pieces 50 of the guide portions 5A and 5B.

[0032] In the configuration shown in Figure 7, etc., there is a small gap around the pipe 63. However, in the fully closed state, a heat-expandable fire-resistant member may be provided in the area adjacent to the pipe 63, for example, the upper part of the guide rail 6A, and / or the part of the rail 6 adjacent to the pipe 63. The heat from a fire will cause the heat-expandable fire-resistant member to expand, thereby sealing the gap.

[0033] The above description mainly concerns rail 6B and the guide sections 5A and 5B provided on both sides of rail 6B, but the above description can also be applied to rail 6A and the guide sections 5A and 5B provided on both sides of rail 6A.

[0034] Other embodiments will be described with reference to Figures 9 to 12. The differences from the embodiments described above are that the protruding dimensions of the piping 63 projecting from one side 620 of the body 62 of the rail 6B are different, and the shape of the recess 42 that receives the rail 6B is different. The other configurations are substantially the same, and the description of other embodiments including elements with the same reference numerals can be based on the description of the embodiments described above.

[0035] As shown in Figure 12, the pipe 63 protruding from one side surface 620 of the body 62 of the rail 6B protrudes beyond the side surface 601 of the head 60 of the rail 6B. More specifically, the pipe 63 has a bottom surface 630, a top surface 631, and a side surface 632. The top surface 631 has a portion that is close to and facing one of the bottom surfaces 602 of the head 60, and a protruding portion 6310 that extends beyond the side surface 601 of the head 60. The side surface 632 is located on the outside (away from the side surface 620) with respect to the vertical plane passing through the side surface 601 of the head 60 of the rail 6B.

[0036] As shown in Figure 12, the recess 42 that receives the rail 6B consists of a space enclosed by a pair of vertical side edges 420 and a horizontal upper edge 421, with an open lower end, and the corner between the upper edge 421 and one side edge 420 protruding into the space to form an upper vertical edge 422 and an upper horizontal edge 423. The dimension between the upper vertical edge 422 and the other side edge 420 is the width dimension W2, which is slightly larger than the width dimension W1 of the rail 6B. The height dimension of the upper vertical edge 422 is approximately the same as the height dimension of the side 601 of the head 60 of the rail 6B. The width dimension of the upper horizontal edge 423 is approximately the same as the width dimension of the protruding portion 6310 of one side 601 of the head 60.

[0037] As shown in Figure 11 (and when reading Figures 12 and 7 together), when the opening is fully closed, the rail 6B is received within the recess 42, and each side edge 400 is positioned in the groove of the guide portion 5, with the upper edge 421 of the recess 42 approaching or contacting the upper surface 600 of the head 60 of the rail 6B, and at the upper end of one (right) side edge 400, the upper vertical edge 422 approaches one side surface 601 of the head 60 of the rail 6B, and the upper horizontal edge 423 is positioned The protruding portion 6310 of the pipe 63 is adjacent to the rail 6B, and the right lateral portion of the rail (the lower portion of the pipe 63) is closed by the visible piece 50 of the guide portion 5A, while the upper end of the other (left) side edge 400 is adjacent to or in contact with the side surface 601 of the head 60 of the rail 6, and the left lateral portion of the rail (the lower portion of the head 60) is closed by the visible piece 50 of the guide portion 5B.

[0038] The above description mainly concerns rail 6B and the guide sections 5A and 5B provided on both sides of rail 6B, but the above description can also be applied to rail 6A and the guide sections 5A and 5B provided on both sides of rail 6A. [Explanation of symbols]

[0039] 1 Guide rail 2. Shutter Curtain 3 Slats 4 Seat board 40 Plate-shaped part 400 Side edge 41 Horizontal part 42 recess 420 Side edge 421 Upper edge 5 (5A, 5B) Guide section 50 Findings 51 Bottom piece 6 (6A, 6B) rails 60 head 61 Bottom 62 Abdomen

Claims

1. In a fire shutter in which both ends of the shutter curtain in the width direction are guided down by left and right guide rails to close the opening formed between the guide rails and form a fire compartment, Rails are laid on the floor surface so as to be approximately perpendicular to the opening. The base plate at the lower end of the shutter curtain has a vertical plate-like portion, and the plate-like portion has a recess that opens downward at a predetermined portion in the width direction corresponding to the rail. The recess consists of a space enclosed by a pair of side edges and an upper edge, and the pair of side edges is defined by a pair of side edge portions formed from the plate-like portion. On the floor surface, adjacent to one or both sides of the rail, a pair of rising visible pieces are provided, each having an open upper end, as guide portions. When the opening is fully closed, at least one side edge is positioned within the guide portion, and the visible piece of the guide portion blocks at least one side portion of the rail. Fire shutter.

2. The seat plate comprises the plate-like portion and a horizontal portion formed at the lower end of the plate-like portion. The horizontal portion is not formed at the lower end of the aforementioned side edge. A fire shutter according to claim 1.

3. The guide portion comprises the pair of visible pieces and a bottom piece, and in cross-sectional view, it has a U-shape, the bottom piece is in contact with or close to the side surface of the rail. A fire shutter according to claim 1.

4. A pipe is provided protruding from at least one side of the rail, and the guide portion is adjacent to the lower part of the pipe on the side. A fire shutter according to claim 1.

5. The rail consists of a head, a bottom, and a rising abdominal portion connecting the head and the bottom. The guide portion is adjacent to the side surface of the abdomen, A fire shutter according to claim 1.

6. The guide section is provided adjacent to both sides of the rail, When the opening is fully closed, each side edge is positioned within each guide portion, and the visible portion of the guide portion covers both lateral parts of the rail. A fire shutter according to any one of claims 1 to 5.

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