Structure of seat plate for opening / closing body

Abstract

To provide a structure of a seat plate for an opening / closing body, which can easily align a center of the seat plate for the opening / closing body with centers of inner and outer lintels without large-scale construction and can easily improve aesthetic property.SOLUTION: Provided is a structure of a seat plate for an opening / closing body 17, the seat plate attached to a tip of the opening / closing body for opening / closing an opening part 15 by passing through an entrance / exit slit 29 for the opening / closing body having a pair of lintels 31, 33 extending along a frontage direction of the opening part 15 as edge parts. The seat plate for the opening / closing body has: a seat plate body 41 fixed to a tip of the opening / closing body 17; and a seat plate cover 43 covering a lower surface of the seat plate body 41 and extending in a longitudinal direction of the seat plate 25 for the opening / closing body. A width length PW orthogonal to a longitudinal direction of the seat plate cover 43 is smaller than a slit width SW orthogonal to a frontage direction of the entrance / exit slit 29. The seat plate cover 43 is movably fixed in a direction of the width length PW with respect to the seat plate body 41 by an adjustment part 51 provided between the seat plate body 41 and the seat plate cover 43.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a structure of a seat plate for an opening / closing body. [Background technology]

[0002] In a shutter device, the opening height that is opened and closed by the shutter curtain may differ depending on the site. Since the number of slats that make up the shutter curtain differs between a shutter device installed at a site with a large opening height and a shutter device installed at a site with a small opening height, the position and posture of the seat plate at the bottom end of the shutter curtain when the opening is fully open, that is, when the shutter curtain is wound up on the winding shaft, may differ (see Patent Document 1, Figure 8). In this shutter device, the seat plate is in a vertical position in the hoistway and is in an appropriate position that is a specified distance away from the vertical surface of the case lintel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-85259 A (Figure 8) Summary of the Invention [Problem to be solved by the invention]

[0004] By the way, since the shutter device is installed after the construction on the building frame side is completed, there may be some errors, and the position of the inner and outer lintels on the frame side and the position of the shutter curtain seat plate that is to be located between them may be slightly misaligned. The diameter of the shutter curtain when rolled up, that is, the maximum rolled diameter, may change depending on the height and shape of the shutter curtain, and the positions of the inner and outer lintels and the seat plate may be misaligned, resulting in various conditions depending on the site. Under such circumstances, when the shutter curtain is rolled up and fully opened, the position of the seat plate may not be in the center between the inner and outer lintels, but may be offset to one side. In other words, the gap between the inner lintel and the seat plate and the gap between the outer lintel and the seat plate are different. In this case, there is no particular problem in terms of safety, and there is no problem in using (operating) the shutter device, but when looking up at the shutter curtain that has been rolled up and stored in the fully open state, the position of the exposed seat plate is not evenly located between the inner and outer lintels, which looks bad and reduces the design. If we were to change the position of the inside and outside lintels to fix this appearance, it would require major construction work on the structure, which is not easy and not realistic. Also, the seat board is suspended by the rolled up shutter curtain, making it difficult to fine-tune its position.

[0005] The present invention has been made in consideration of the above-mentioned situation, and its purpose is to provide a structure for a seat plate for an opening and closing body, which allows the center of the seat plate to be easily aligned with the center of the inner and outer lintels without large-scale construction, thereby easily improving the design. [Means for solving the problem]

[0006] Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. The structure of the opening / closing body seat plate according to claim 1 of the present invention is a structure of an opening / closing body seat plate attached to the tip of an opening / closing body 17 that opens and closes an opening 15 by passing through an entrance / exit slit 29 for the opening / closing body having a pair of lintels 31, 33 extending along the frontage direction of the opening 15 as edge portions, The opening / closing body seat plate 25 has a seat plate main body 41 fixed to the tip of the opening / closing body 17, and a seat plate cover 43 covering the lower surface of the seat plate main body 41 and extending in the longitudinal direction of the opening / closing body seat plate 25, The width PW of the seat cover 43 perpendicular to the longitudinal direction is smaller than the slit width SW of the entrance / exit slit 29 perpendicular to the frontage direction, The seat panel cover 43 is characterized in that it is fixed to the seat panel body 41 so as to be movable in the direction of the width PW relative to the seat panel body 41 by an adjustment portion 51 provided between the seat panel body 41 and the seat panel cover 43.

[0007] In this structure of the opening / closing body seat plate, an entrance / exit slit 29 for the opening / closing body 17 is formed between an outer lintel 31 and an inner lintel 33, which are a pair of lintels extending along the frontage direction of the opening 15. The opening / closing body 17 passes through this entrance / exit slit 29 to open and close the opening 15. The entrance / exit slit 29 becomes a rectangular opening portion that is long in the frontage direction of the opening 15 between the outer lintel 31 and the inner lintel 33. A seat panel body 41 is fixed to the tip of the opening / closing body 17. A seat panel cover 43 is attached to the seat panel body 41, covering the underside of the seat panel body 41 and extending in the longitudinal direction of the opening / closing body seat panel 25. In the structure of the opening / closing body seat panel, the width PW perpendicular to the longitudinal direction of the seat panel cover 43 is smaller than the slit width SW perpendicular to the frontage direction of the entrance / exit slit 29. Therefore, a gap 45 is generated between the seat panel cover 43 and the inside of the inner and outer lintels 31, 33. In the structure of the opening / closing body seat plate, when the opening / closing body 17 is wound up to the fully open state, the position of the opening / closing body seat plate 25 may not be located in the center between the inner and outer lintels, that is, it may be offset, depending on the height and shape of the opening / closing body 17. In other words, the gaps generated on both outer sides of the opening / closing body seat plate 25 in the width direction are not uniform. Therefore, in the structure of the seat plate for the opening and closing body, the seat plate cover 43 is attached to the seat plate body 41 so as to be freely movable in the width direction PW relative to the seat plate body 41 by the adjustment part 51 provided between the seat plate body 41 and the seat plate cover 43. Therefore, in the structure of the seat plate for the opening and closing body, the seat plate cover 43 can be moved in the width direction PW relative to the seat plate body 41 by operating the adjustment part 51, so that the gap 45 between the outer lintel 31 and the seat plate cover 43 and the gap 45 between the inner lintel 33 and the seat plate cover 43 can be made the same. In other words, both gaps 45 in the width direction can be made uniform. As a result, when the opening and closing body 17 is rolled up and fully opened and viewed from below, the opening and closing body seat plate 25 is located in the middle between the inner and outer lintels, so the gap 45 becomes uniform and the appearance is improved. As a result, in the structure of the opening / closing body seat plate, the width of the gap on both outer sides in the width direction of the opening / closing body seat plate 26 can be adjusted to easily align the center of the entrance / exit slit 29, that is, the center of the inner and outer lintels 31, 33, so that the design can be easily improved without large-scale construction work. Also, since the gaps 45 can be properly provided for the inner and outer lintels, the fit is improved and the opening / closing body seat plate 25 does not collide with the lintels 31, 33 when the opening / closing body 17 is rolled up. That is, contact or snagging between the opening / closing body seat plate 25 and the lintels 31, 33 can be prevented. For example, if the opening / closing body seat plate 25 has an obstacle detection mechanism, the movable part (sensing part) that is lifted by an obstacle will detect it at that point if the gap 45 is narrow and it gets caught on the lintel when it starts to descend from the fully open position. That is, the obstacle will be erroneously detected. The structure of the opening / closing body seat plate makes it possible to prevent such malfunction of the movable part.

[0008] The structure of the opening / closing body seat plate according to claim 2 of the present invention is the structure of the opening / closing body seat plate according to claim 1, The adjustment unit 51 At least at both ends in the longitudinal direction of the opening / closing body seat plate 25, A pair of screw plates 53 formed on the seat plate cover 43 sandwiching the seat plate body 41 in the width direction PW; An adjustment screw 55 that is screwed into the screw plate 53 from the opposite side to the seat plate body 41 and has a tip that abuts against the seat plate body 41; The present invention is characterized by comprising:

[0009] In this structure of the seat plate for opening and closing body, the adjustment part 51 is composed of a screw-fitting plate 53 provided on the seat plate cover 43 and an adjustment screw 55 that screws into the screw-fitting plate 53. The seat plate cover 43 covers at least the lower surface of the seat plate body 41. The adjustment screw 55 screws into the screw-fitting plate 53 from the side opposite the seat plate body 41, and its tip abuts against the seat plate body 41. The screw plates 53 and the adjustment screws 55 are provided at least at both longitudinal ends of the opening / closing body seat plate 25, and are provided to sandwich both longitudinal ends of the seat plate main body 41 in the width PW direction. That is, the screw plates 53 and the adjustment screws 55 are provided at least in a total of four locations: a pair at one longitudinal end of the opening / closing body seat plate 25 in the direction of the inner and outer lintels, and a pair at the other longitudinal end of the opening / closing body seat plate 25 in the direction of the inner and outer lintels. The adjustment screw 55 is screwed into the screw plate 53 from the side opposite the seat plate body 41, and its tip abuts against the seat plate body 41, so that when it is tightened, the screw plate 53 moves toward the head side of the adjustment screw 55 being tightened. In other words, when the adjustment screw 55 is tightened, the length of its protrusion from the screw plate 53 increases. The seat plate cover 43 moves in a direction narrowing the gap 45 on the side of the adjusting screw being operated by the distance that the adjustment screw 55 newly protrudes from the screw plate 53. For example, when the adjustment screw 55 on the outer lintel side is tightened, the seat plate cover 43 moves in a direction narrowing the gap 45 on the outer lintel side. This allows fine adjustment of the gaps 45 between the inner and outer lintels, respectively, while easily and highly accurately making the gaps 45 between the seat panel covers 43 equal on both sides, that is, aligning them. In addition, in this structure of the seat plate for opening and closing bodies, the seat plate cover 43, which is held movably in the width direction PW relative to the seat plate main body 41, is fixed by adjustment screws 55 that are tightened from both sides in the width direction PW. Conventional seat plate covers are fixed to the bottom surface of the seat plate main body from the underside by rivets. Therefore, when the seat plate for opening and closing bodies is in the fully open state where it fits into the entrance and exit slit, the heads of the rivets are exposed on the underside when viewed from below, impairing the design. In contrast, in the structure of the seat plate for opening and closing bodies, the seat plate cover 43 is fixed by the adjustment screws 55 from the width direction PW, eliminating the need for rivets as in the past, and improving the design when viewed up when fully open. In addition, in the structure of the opening / closing body seat plate, there are no rivets on the underside of the seat plate cover 43, so there is no minute gap between the opening / closing body seat plate 25 and the floor when it lands to be fully closed. That is, in the past, the underside of the seat plate did not come into contact with the floor surface without any gaps due to the protruding heads of the rivets, but this is resolved by eliminating the rivets, and the opening / closing body seat plate 25 can sit without any gaps. Furthermore, if the shutter device is installed in a location exposed to wind, when the opening / closing body seat plate 25 is seated on the floor, the opening / closing body 17 is blown by the wind, causing the opening / closing body seat plate 25 to rub against the floor. This causes the heads of the rivets protruding from the underside of the seat plate cover 43 to wear. When the heads of the rivets wear, the fixing strength decreases, and in the worst case scenario, the fixing by the heads is released, causing the seat plate cover 43 to fall off. In contrast, with the structure of the opening / closing body seat plate in which the seat plate cover 43 is fixed by the adjustment screw 55 from the direction of the width PW, such a situation does not occur.

[0010] The structure of the opening / closing body seat plate according to claim 3 of the present invention is the structure of the opening / closing body seat plate according to claim 2, The screw plate 53 and the adjustment screw 55 are A seat cover 43 is provided between the inside of the seat cover 43 and the seat body 41. The seat plate cover 43 is formed with a tool insertion hole 59 that allows the head of the adjustment screw 55 to be rotated. A cover cap can be attached to the tool insertion hole 59 in a removable manner.

[0011] In this structure of the seat plate for opening and closing body, a screw plate 53 and an adjustment screw 55 are provided between the inside of the seat plate cover 43 and the seat plate body 41. The screw plate 53 is provided integrally with the seat plate cover 43. The adjustment screw 55 is screwed into the screw plate 53 from the direction of the width PW, which is the inner and outer lintel direction. The seat plate cover 43 is fixed to the seat plate body 41 by sandwiching the seat plate body 41 between the tips of the adjustment screws 55. The screw engagement plate 53 and the adjustment screw 55 are disposed inside the seat plate cover 43. In other words, they are covered by the seat plate cover 43 and are not exposed to the outside. A tool insertion hole 59 into which a tool 57 (e.g., the tip of a screwdriver or the like) is inserted is bored in the seat plate cover 43 coaxially with the adjustment screw 55. The adjustment screw 55 can be rotated by the tool 57 inserted from the outside through the tool insertion hole 59. A cover cap is attached to the tool insertion hole 59 formed in the seat plate cover 43. This makes the tool insertion hole 59 and the adjustment screw 55 through the tool insertion hole 59 invisible to the naked eye, and thus prevents deterioration of the design and appearance of the opening / closing body seat plate 25.

[0012] The structure of the opening / closing body seat plate according to claim 4 of the present invention is the structure of the opening / closing body seat plate according to claim 3, The screw plate 53 and the tool insertion hole 59 on one side, which are provided by sandwiching the seat plate body 41 in the direction of the width PW, and the screw plate 53 and the tool insertion hole 59 on the other side, It is characterized in that it is positioned offset from a straight line L perpendicular to the frontage direction.

[0013] In this structure of the seat plate for opening and closing body, a pair of screw plates 53 provided on the inside of the seat plate cover 43 are located on the outer lintel side and the inner lintel side, which are located on either side of the seat plate body 41 in the direction of the width PW. An adjustment screw 55 is screwed into each screw plate 53 from the side opposite the seat plate body 41. When the adjustment screw 55 is tightened, the tip of the adjustment screw 55 protrudes from the screw plate 53 and abuts against the seat plate body 41. As a result, the seat plate cover 43 reduces the gap 45 on the tightening side by the newly protruding distance. In the structure of the opening / closing body seat plate, the screw plates 53 arranged on both sides of the seat plate body 41 in the direction of the width PW are arranged offset from the straight line L perpendicular to the frontage direction. For example, the screw plates 53, adjustment screws 55, and tool insertion holes 59 on the straight line L located on the outer lintel side are offset from the screw plates 53, adjustment screws 55, and tool insertion holes 59 located on the inner lintel side and deviated from the straight line L. When the opening / closing body seat plate 25 for opening / closing bodies is viewed from above, these, for example, the tool insertion holes 59, are arranged in a staggered manner. In other words, the inner and outer tool insertion holes 59 are not arranged on the straight line L perpendicular to the frontage direction. In the structure of the opening / closing body seat plate, from the standpoint of fire prevention, by staggering the tool insertion holes 59 of the seat plate cover 43, the penetration of flames is suppressed compared to a case in which the inner and outer tool insertion holes 59 are arranged on a straight line L perpendicular to the frontage direction. If the tool insertion holes 59 are positioned to penetrate in the inner and outer directions, which are the directions of the width PW, there is a risk of flame penetration, but by staggering the holes, it is possible to suppress this. Effect of the Invention

[0014] According to the structure of the seat plate for an opening / closing body described in claim 1 of the present invention, the gap width can be adjusted to easily align the center of the seat plate for an opening / closing body with the center of the entrance / exit slit, so that the design can be easily improved without large-scale construction work.

[0015] According to the structure of the seat plate for an opening / closing body described in claim 2 of the present invention, adjustment screws whose tips abut the seat plate body are screwed into a pair of screw-fitting plates formed on the seat plate cover by sandwiching the seat plate body in the width direction.Therefore, by loosening the pair of adjustment screws and aligning the center of the seat plate for an opening / closing body with the center of the entrance / exit slit, and then tightening the pair of adjustment screws so that their tips abut the seat plate body, each gap can be properly aligned and fixed evenly.

[0016] According to the structure of the seat plate for an opening / closing body described in claim 3 of the present invention, the screw plate and the adjustment screw that screws into this screw plate are arranged and covered on the inside of the seat plate cover, and the adjustment screw can be adjusted from the outside of the seat plate cover through a tool insertion hole drilled in the seat plate cover, so that the seat plate for an opening / closing body can be provided with a gap adjustment function without compromising the design of the seat plate for an opening / closing body.

[0017] According to the structure of the base plate for an opening / closing body described in claim 4 of the present invention, the tool insertion holes on one lintel side and the tool insertion holes on the other lintel side are staggered away from a straight line L perpendicular to the width direction, so that the tool insertion holes on both sides in the inward and outward directions, which is the width direction of the aluminum base plate body, do not penetrate in the inward and outward directions.This makes it possible to suppress the linear penetration of flames into the base plate for an opening / closing body, thereby improving fire resistance. [Brief description of the drawings]

[0018] [Figure 1] 1 is a side cross-sectional view of the vicinity of a lintel in a shutter device equipped with the structure of an opening / closing body seat plate according to the present invention. [Diagram 2] FIG. 2 is an enlarged view of a main part of FIG. [Diagram 3] 13 is a bottom view looking up at a seat plate for an opening / closing body arranged in an entrance / exit slit. FIG. [Figure 4] 13 is a bottom view of an opening / closing body seat plate according to a modified example in which adjustment portions are arranged in a staggered manner. FIG. [Diagram 5] This is a side cross-sectional view when the position of the opening / closing body seat plate is not centered between the inner and outer lintels but is offset. [Figure 6] FIG. 13 is a side cross-sectional view of the opening / closing body seat plate before adjustment, in which the opening / closing body seat plate is slightly lowered. [Figure 7] 13 is a side cross-sectional view after adjustment in which the opening / closing body seat plate is raised to the inlet / outlet slit. FIG. [Figure 8] 13 is a side cross-sectional view showing the structure of an opening / closing body seat plate according to a modified example. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side cross-sectional view of the vicinity of a lintel in a shutter device 11 having a structure of an opening / closing body seat plate according to the present invention. The structure of the seat plate for an opening / closing body according to this embodiment is used in a shutter device 11. The shutter device 11 is installed in an opening 15 of a building having a pair of guide rails 13 on the left and right. The shutter device 11 includes a shutter curtain 17, which is an opening / closing body, as a constituent member. The shutter curtain 17 is guided so as to be freely raised and lowered in the opening 15 by inserting both sides in the width direction of the opening 15 (perpendicular to the paper surface of FIG. 1) into the pair of guide rails 13.

[0020] The shutter device 11 has a storage case 19 above the opening 15. The storage case 19 houses a winding section 21 constituting a winding mechanism. The winding section 21 is driven by, for example, an electric motor (not shown) and winds and unwinds the shutter curtain 17 to raise and lower it for opening and closing. The shutter curtain 17 wound up by the winding section 21 is wound and unwound hanging down from the storage case 19 along a vertical tangent to the winding outer diameter 23. The shutter curtain 17 has an opening / closing body seat plate 25 at its opening / closing tip. The opening / closing body seat plate 25 is connected to the lower end, which is the tip of the shutter curtain 17, by a seat plate connecting slat 27 at the lowest end having a seat plate connecting structure.

[0021] The structure of the opening / closing body seat plate according to this embodiment includes an opening / closing body seat plate 25 that passes through an entrance / exit slit 29 located at the bottom of the storage case 19. The entrance / exit slit 29 is formed between an outer lintel 31 and an inner lintel 33, which are a pair of lintels extending along the frontage direction of the opening 15, with these lintels as edges. The entrance / exit slit 29 becomes a rectangular opening portion that is long in the frontage direction of the opening 15 between the outer lintel 31 and the inner lintel 33. The outer lintel 31 is fixed to, for example, the building frame 35. The inner lintel 33 is fixed to a cross member 37 provided on the storage case 19. Note that both the outer lintel 31 and the inner lintel 33 may be provided on the building frame 35 or the storage case 19, or either one may be provided on the building frame 35 or the storage case 19.

[0022] The hanging ends of the outer lintel 31 and the inner lintel 33 are disposed so as to be substantially flush with the ceiling 39. The upper ends of the pair of guide rails 13 are inserted into both longitudinal ends of this inlet / outlet 29. Therefore, the shutter curtain 17 passes through the inlet / outlet slit 29 while being guided by the guide rails 13 to open and close the opening 15. When the opening 15 is fully closed, the opening / closing body seat plate 25 of the shutter curtain 17 lands on the floor surface of the opening 15. When the shutter curtain 17 is wound up by the winding section 21 and fully opened, the opening / closing body seat plate 25 attached to the tip of the shutter curtain 17 is disposed so as to be substantially flush with this inlet / outlet slit 29.

[0023] In this embodiment, the seat panel body 41 of the opening / closing body seat panel 25 operates (retracts) when the seat panel 25 lands or comes into contact with an obstacle. The rearward movement of the seat panel body 41 is detected by a sensing lever or an L-shaped member that constitutes an obstacle detection device. The structure of the opening / closing body seat panel according to the present invention can also be applied to a non-sensing type seat panel, such as an angle seat panel.

[0024] The opening / closing body seat plate 25 has a seat plate cover 43 that covers the underside of the seat plate main body 41 and extends in the longitudinal direction of the opening / closing body seat plate 25. The seat plate main body 41 has a complex cross-sectional shape and is made of an aluminum molded material (extrusion molding material). On the other hand, the seat plate cover 43, which has a relatively simple C-shaped cross section, is made of a steel sheet metal material.

[0025] FIG. 2 is an enlarged view of a main portion of FIG. Since the opening / closing body seat plate 25 is located inside the entrance / exit slit 29, the width of the opening / closing body seat plate 25 is smaller than the slit width SW in the inside / outside direction (left / right direction in FIG. 2) perpendicular to the frontage direction. Therefore, gaps 45 are generated between both outsides in the direction of width PW perpendicular to the longitudinal direction of the seat plate cover 43 and the outer lintel 31 and the inner lintel 33.

[0026] In the structure of the seat plate for opening and closing body, the seat plate body 41 and the seat plate cover 43 are engaged with each other in a structure that allows them to slide inward and outward. In this engagement structure, for example, a step portion 47 that is thin is formed on the edge portion on both sides in the inward and outward directions of the seat plate body 41. A U-shaped pocket portion 49 formed on both sides in the inward and outward directions, which is the width direction of the seat plate cover 43, engages with this step portion 47 so as to be slidable inward and outward. As a result, the seat plate cover 43 is held by the seat plate body 41 so as to be slidable in the inward and outward directions, which is the direction of the width length PW. The seat plate cover 43 can be assembled in an engaged state by, for example, inserting an end of the seat plate body 41 into the cross-sectional side opening of the end and sliding it in place. The engagement structure between the seat plate cover 43 and the seat plate body 41 is not limited to this.

[0027] The shutter curtain 17 hanging down in the tangential direction of the winding portion 21, i.e., in the vertical direction, has a seat panel body 41 at the lower end that is approximately flush with the lower end surfaces of the outer lintel 31 and the inner lintel 33. The seat panel cover 43 slides inward and outward relative to the seat panel body 41, making it possible to expand and contract the gap 45 between the outer lintel 31 and the inner lintel 33.

[0028] The structure of the seat plate for the opening and closing body is such that the seat plate cover 43, which is freely movable in the inward and outward direction, which is the width direction PW, relative to the seat plate main body 41, is fixed by an adjustment part 51 provided between the seat plate main body 41 and the seat plate cover 43.

[0029] The adjustment parts 51 are provided at least on both longitudinal ends of the opening / closing body seat plate 25. The adjustment parts 51 include a pair of screw plates 53 formed on the seat plate cover 43 to sandwich the seat plate body 41 in the width direction, and an adjustment screw 55 that is screwed into the screw plates 53 from the opposite side to the seat plate body 41 and has a tip that abuts against the seat plate body 41. That is, one adjustment part 51 has the screw plates 53 and the adjustment screw 55. Two adjustment parts 51 are provided in pairs on both sides sandwiching the seat plate body 41 in the width direction.

[0030] FIG. 3 is a bottom view of the opening / closing body seat plate 25 arranged in the entrance / exit slit 29 when viewed from above. In this embodiment, the two adjustment parts 51 are arranged on a straight line L perpendicular to the frontage direction. In the illustrated example, a pair of opposing adjustment parts 51 is provided on one longitudinal end side of the opening / closing body seat plate 25, and the screw plates 53 constituting the adjustment parts 51 are formed continuously in the frontage direction, and a plurality of adjustment screws 55 are provided in pairs at predetermined intervals in the longitudinal direction, which is the frontage direction.

[0031] The screw engagement plate 53 and the adjustment screw 55 are provided between the inside of the seat plate cover 43 and the seat plate body 41. The seat plate cover 43 is formed with a tool insertion hole 59 for inserting a tool 57 (see FIG. 6) that can rotate the head of the adjustment screw 55. A cover cap (not shown) is detachably attached to this tool insertion hole 59.

[0032] FIG. 4 is a bottom view of an opening / closing body seat plate 25 according to a modified example in which adjustment portions 51 are arranged in a staggered manner. The structure of the opening / closing body seat plate may be such that the pair of adjustment parts 51 are arranged deviating (shifted) from the straight line L perpendicular to the frontage direction. That is, in the structure of the opening / closing body seat plate according to the modified example, the screw mating plate 53 and the tool insertion hole 59 on the outer lintel side and the screw mating plate 53 and the tool insertion hole 59 on the inner lintel side, which are provided to sandwich the seat plate main body 41 in the inner / outer direction that is the width direction, are arranged deviating from the straight line L perpendicular to the frontage direction. In this case, the adjustment parts 51 are arranged in a staggered manner in a plan view (or bottom view).

[0033] Next, a procedure for adjusting the gap in the structure of the opening / closing body seat plate will be described.

[0034] FIG. 5 is a side cross-sectional view of a case where the position of the opening / closing body seat plate 25 is not in the center between the inner and outer lintels but is offset to one side. When the shutter device 11 is installed after the construction on the building frame side is completed, the center position ZCL of the opening / closing body seat plate 25 may be slightly shifted from the center position MCL of the inner and outer lintels. For example, the gap A between the inner lintel 33 and the seat plate cover 43 becomes larger than the gap B between the outer lintel 31 and the seat plate cover 43 (A>B).

[0035] FIG. 6 is a side cross-sectional view before adjustment in which the opening / closing body seat plate 25 is slightly lowered. When the opening / closing body seat plate 25 is tilted to one side in the width SW direction within the entrance / exit slit 29, the opening / closing body seat plate structure allows the opening / closing body seat plate 25 to be slightly lowered (lowered) from the entrance / exit slit 29. The lowered opening / closing body seat plate 25 makes the tool insertion holes 59 drilled at both ends of the seat plate cover 43 in the inward and outward directions visible. In this state, the sliding adjustment of the seat plate cover 43 is performed. For the sliding adjustment, first, the cover caps for the tool insertion holes 59 are removed, both adjustment screws 55 are loosened, and then the gap 45 is finely adjusted. The adjustment screw 55 on one side is tightened, and then the other adjustment screw 55 is also tightened. In other words, the procedure is to first loosen both adjustment screws 55.

[0036] After all of the adjustment screws 55 have been loosened, the seat plate cover 43 is slid and adjusted to be positioned so that gaps A and B are equal. After this positioning is completed, the seat plate cover 43 is temporarily fixed so that it does not move, and all of the adjustment screws 55 are fixed so that their tips abut against the seat plate body 41.

[0037] FIG. 7 is a side cross-sectional view of the opening / closing body seat plate 25 after adjustment in which the opening / closing body seat plate 25 is raised to the entrance / exit slit 29. FIG. After all the adjustment screws 55 are fixed and the seat cover 43 is fixed so that it cannot slide relative to the seat body 41, raise the shutter curtain 17 to the rolled-up position where the opening 15 is fully open. Check that the gap between the seat cover 43 and the inner and outer lintels on both sides in the inside and outside directions is equal to (A+B) / 2, and then the adjustment work is completed.

[0038] FIG. 8 is a side cross-sectional view showing the structure of an opening / closing body seat plate according to a modified example. In the above embodiment, the opening / closing body seat plate 25 is an obstacle sensor type seat plate having an obstacle sensor, but the opening / closing body seat plate may have a structure such as an angle seat plate 61 having a seat plate body 41 without an obstacle sensor, as shown in FIG. 8. The angle seat plate 61 is an inverted T-shape in which a pair of angle irons 63 are fixed back to back. The seat plate cover 43 has a pocket portion 49 formed on both sides in the inner and outer directions, and each of the pocket portions 49 is provided with a screw plate 53, an adjustment screw 55, and a tool insertion hole 59 similar to those described above. In this case, the upper edge piece 65 of the pocket portion 49 may be inclined toward the horizontal piece 67 of the seat plate body 41, that is, bent to match the thickness of the horizontal piece 67.

[0039] Next, the operation of the above-mentioned configuration will be described.

[0040] In the structure of the seat plate for opening and closing body according to this embodiment, an entrance and exit slit 29 for the shutter curtain 17 is formed between the outer lintel 31 and the inner lintel 33 extending along the frontage direction of the opening 15. The shutter curtain 17 passes through this entrance and exit slit 29 to open and close the opening 15. A seat plate body 41 is fixed to the tip of the shutter curtain 17. A seat plate cover 43 is attached to the seat plate body 41, covering the lower surface of the seat plate body 41 and extending in the longitudinal direction of the seat plate for opening and closing body 25. In the structure of the seat plate for opening and closing body, the slit width SW in the inner and outer directions of the entrance and exit slit 29 perpendicular to the frontage direction of the opening 15 is larger than the plate width in the inner and outer directions of the seat plate for opening and closing body 25. Therefore, a gap 45 is generated between the inner and outer lintels and the seat plate cover 43.

[0041] In the structure of the opening / closing body base plate, when the shutter curtain 17 is rolled up to the fully open position, the position of the opening / closing body base plate 25 may not be centered between the inner and outer lintels, i.e., may be offset, depending on the height or shape of the shutter curtain 17, or due to errors in relation to the building structure.

[0042] Therefore, in the structure of the seat plate for the opening and closing body, the seat plate cover 43 is attached to the seat plate body 41 so as to be freely movable in the inward and outward directions, which are the width direction, with respect to the seat plate body 41, by the adjustment part 51 provided between the seat plate body 41 and the seat plate cover 43. Therefore, in the structure of the seat plate for the opening and closing body, the seat plate cover 43 can be moved in the width direction PW by operating the adjustment part 51 with respect to the seat plate body 41, so that the gap 45 between the outer lintel 31 and the seat plate cover 43 and the gap 45 between the inner lintel 33 and the seat plate cover 43 can be made the same. In other words, both the inner and outer gaps 45 can be made uniform. As a result, when the shutter curtain 17 is rolled up and fully opened and viewed from below, the seat plate for the opening and closing body 25 is located in the middle between the inner and outer lintels and in the middle of the entrance and exit slit 29, so that the gaps 45 on both sides become uniform, improving the appearance. As a result, in the structure of the opening / closing body seat plate, the gap width (A, B) can be adjusted to easily align the center of the opening / closing body seat plate 25 with the center of the inner and outer lintels and the center of the entrance / exit slit 29, eliminating the need for large-scale construction on the structure side and allowing for easy improvement of the design.

[0043] Also, since the gap 45 can be properly provided for the inner and outer lintels, the fit is improved and the opening / closing body seat plate 25 does not collide with the lintels 31, 33 when the shutter curtain 17 is rolled up. In other words, contact or snagging between the opening / closing body seat plate 25 and the lintels 31, 33 can be prevented. For example, if the opening / closing body seat plate 25 has an obstacle detection mechanism, the movable part (sensing part) that is lifted by an obstacle will detect it at that point if it gets caught on the lintels 31, 33 when starting to descend from the fully open position due to the narrow gap 45. In other words, the obstacle will be erroneously detected. The structure of the opening / closing body seat plate makes it possible to prevent such malfunction of the movable part.

[0044] In addition, in the structure of this seat plate for opening and closing body, the adjustment part 51 is composed of a screw plate 53 provided on the seat plate cover 43 and an adjustment screw 55 screwed into the screw plate 53. The seat plate cover 43 covers at least the lower surface of the seat plate body 41. The adjustment screw 55 screws into the screw plate 53 from the side opposite the seat plate body 41, and its tip abuts against the seat plate body 41.

[0045] The screw plates 53 and the adjustment screws 55 are provided at least at both longitudinal ends of the opening / closing body seat plate 25, and are provided to sandwich both longitudinal ends of the seat plate main body 41 in the inward / outward direction, which is the width direction. In other words, the screw plates 53 and the adjustment screws 55 are provided in at least four locations in total: a pair in the inward / outward direction at one longitudinal end of the opening / closing body seat plate 25, and a pair in the inward / outward direction at the other longitudinal end of the opening / closing body seat plate 25.

[0046] The adjustment screw 55 is screwed into the screw plate 53 from the side opposite the seat panel main body 41, and its tip abuts against the seat panel main body 41, so that when it is tightened, the screw plate 53 moves toward the head of the adjustment screw 55 being tightened. In other words, when the adjustment screw 55 is tightened, its protruding length from the screw plate 53 increases. The seat panel cover 43 moves in a direction narrowing the gap 45 on the side of the adjusting screw being operated by the distance that the adjustment screw 55 newly protrudes from the screw plate 53. For example, when the adjustment screw 55 on the lintel side is tightened, the seat panel cover 43 moves in a direction narrowing the gap 45 on the lintel side, that is, toward the outdoors.

[0047] In actual gap adjustment work, all adjustment screws 55 are loosened, and the center of the opening / closing body seat plate 25 is aligned with the center of the inner and outer lintels to position it, and then all adjustment screws 55 are tightened so that the tips of the seat plate main body 41 abut at that position.

[0048] This allows the inner and outer gaps 45 to be finely adjusted and easily and precisely aligned to be equal to each other.

[0049] In addition, in this structure of the seat plate for opening and closing bodies, the seat plate cover 43, which is held so as to be movable in the inward and outward directions relative to the seat plate main body 41, is fixed by the adjustment screw 55, which is tightened from both the inward and outward directions. Conventional seat plate covers are fixed to the bottom surface of the seat plate main body from the underside by rivets. Therefore, when the seat plate for opening and closing bodies is in the fully open state where it fits into the entrance and exit slit, the heads of the rivets are exposed on the underside of the seat plate cover when viewed from below, impairing the design. In contrast, in the structure of the seat plate for opening and closing bodies, the seat plate cover 43 is fixed from the inward and outward directions by the adjustment screw 55, eliminating the need for rivets, and improving the design when viewed up when fully open.

[0050] In addition, in the structure of the opening / closing body seat plate, there are no rivets on the underside of the seat plate cover 43, so there is no minute gap between the opening / closing body seat plate 25 and the floor when it lands to be fully closed. That is, in the past, the underside of the seat plate did not come into contact with the floor surface without any gaps due to the protruding heads of the rivets, but this is resolved by eliminating the rivets, and the opening / closing body seat plate 25 can sit without any gaps.

[0051] Furthermore, if the shutter device is installed in a location exposed to wind, when the opening / closing body seat plate 25 is seated on the floor, the shutter curtain 17 is blown by the wind, causing the opening / closing body seat plate 25 to rub against the floor. This causes the heads of the rivets that protrude from the underside of the seat plate cover to wear out. When the heads of the rivets wear out, the fixing strength decreases, and in the worst case scenario, the fixing by the heads is released, causing the seat plate cover 43 to fall off.

[0052] In contrast, such a situation does not occur in the structure of the seat plate for opening / closing body in which the seat plate cover 43 is fixed from the width PW direction by the adjustment screw 55. As a result, the adjustment screw 55, whose tip abuts against the seat plate body 41, is screwed into a pair of screw plates 53 formed on the seat plate cover 43 sandwiching the seat plate body 41 in the inside and outside directions, so that the pair of adjustment screws 55 can be loosened, the center of the seat plate for opening / closing body 25 is aligned with the center of the entrance / exit slit 29, and then the pair of adjustment screws 55 can be tightened so that the tips of the pair of adjustment screws 55 abut against the seat plate body 41, thereby making it possible to properly align and fix the inner and outer gaps 45 located on both outer sides of the seat plate cover 43 evenly.

[0053] In addition, in this structure of the seat plate for opening / closing body, the screw plate 53 and the adjustment screw 55 are provided between the inside of the seat plate cover 43 and the seat plate body 41. The screw plate 53 is provided integrally with the seat plate cover 43. The adjustment screw 55 is screwed into the screw plate 53 from the inside and outside directions. The seat plate cover 43 is fixed to the seat plate body 41 by sandwiching the seat plate body 41 between the tips of the adjustment screws 55.

[0054] The screw engagement plate 53 and the adjustment screw 55 are disposed inside the seat plate cover 43. In other words, they are covered by the seat plate cover 43 and are not exposed to the outside. A tool insertion hole 59 into which a tool 57, such as the tip of a screwdriver, is drilled coaxially with the adjustment screw 55 in the seat plate cover 43. The adjustment screw 55 can be rotated by the tool 57 inserted from the outside through the tool insertion hole 59.

[0055] A cover cap is attached to the tool insertion hole 59 formed in the seat plate cover 43. This prevents the tool insertion hole 59 and the adjustment screw 55 through the tool insertion hole 59 from being visually observed on the opening / closing body seat plate 25, and prevents deterioration of the design and appearance. As a result, the screw plate 53 and the adjustment screw 55 screwed into the screw plate 53 are arranged and covered on the inside of the seat plate cover 43, and the adjustment screw 55 can be adjusted from the outside of the seat plate cover 43 through the tool insertion hole 59 formed in the seat plate cover 43. This allows the opening / closing body seat plate 25 to have the adjustment function of the gap 45 without deteriorating the design of the opening / closing body seat plate 25.

[0056] In this structure of the seat plate for opening and closing body, a pair of screw plates 53 provided on the inside of the seat plate cover 43 are located on the outer lintel side and the inner lintel side, sandwiching the seat plate body 41. An adjustment screw 55 is screwed into each screw plate 53 from the side opposite the seat plate body 41. When the adjustment screw 55 is tightened, the tip of the adjustment screw 55 protrudes from the screw plate 53 and abuts against the seat plate body 41. As a result, the seat plate cover 43 reduces the gap 45 on the tightening side by the new protruding distance.

[0057] In addition, in the structure of the opening / closing body seat plate, the screw plates 53 arranged on both sides of the seat plate body 41 in the inside / outside direction may be arranged offset from the straight line L perpendicular to the frontage direction. For example, the screw plates 53, adjustment screws 55, and tool insertion holes 59 on the straight line L located on the outer lintel side are arranged offset from the screw plates 53, adjustment screws 55, and tool insertion holes 59 located on the inner lintel side and deviated from the straight line L. When the opening / closing body seat plate 25 is viewed from above, these, for example, the tool insertion holes 59, are arranged in a staggered manner. In other words, the inner and outer tool insertion holes 59 are not arranged on the straight line L perpendicular to the frontage direction.

[0058] In this structure of the seat plate for opening and closing body, the tool insertion holes 59 of the seat plate cover 43 are arranged in a staggered manner, so that the penetration of flames is suppressed as a fireproof structure compared to a case where the inner and outer tool insertion holes 59 are arranged on a straight line L perpendicular to the frontage direction. If the tool insertion holes 59 are positioned to penetrate in the inner and outer directions, there is a risk of flames penetrating, but by arranging them in a staggered manner, it is possible to suppress this. The seat plate body 41, which is a molded material covered on the inside of the seat plate cover 43, is made of aluminum. The seat plate cover 43 that covers this seat plate body 41 is made of steel. It is said that there is no risk of flames penetrating the shutter curtain 17 if it is blocked with steel that is 1.5 mm thick or more. As a result, the tool insertion hole 59 on the outer lintel side and the tool insertion hole 59 on the inner lintel side are staggered away from the straight line L perpendicular to the width direction, so that the tool insertion holes 59 on both the inward and outward sides of the aluminum seat plate body 41 are no longer positioned so as to penetrate in the inward and outward directions, which suppresses the linear penetration of flames into the opening / closing body seat plate 25 and improves fire resistance.

[0059] In the above-mentioned embodiments, the position of the adjustment unit 51 has been described as being opposite the inner and outer lintels on both sides in the width direction of the opening / closing body seat plate 25, but the position of the adjustment unit 51 may be located at both ends in the longitudinal direction of the opening / closing body seat plate 25, and the end may be provided with a mechanism capable of adjusting the seat plate cover 43 by operating in a direction parallel to the longitudinal direction. In other words, the screwing direction of the adjustment screw 55 may be parallel to the longitudinal direction of the opening / closing body seat plate 24, and a structure may be combined with a link mechanism such as a bell crank or an inclined groove so that the seat plate cover 43 can slide in the width direction PW relative to the seat plate main body 41. By adopting such a structure, the above-mentioned tool insertion hole 59 is not exposed, and the adjustment screw 55 can be arranged on the surface of both ends in the longitudinal direction of the opening / closing body seat plate 25.

[0060] Therefore, according to the structure of the base plate for the opening / closing body in this embodiment, the gap width can be adjusted so that the center of the base plate for the opening / closing body 25 can be easily aligned with the center of the inner and outer lintels, making it possible to easily improve the design without large-scale construction work. [Explanation of symbols]

[0061] 15…Opening 17...Opening and closing body (shutter curtain) 25…Opening and closing body seat plate 29...Entrance / exit slit 31…Outer lintel 33…Inner lintel 41…Seat body 43…Seat cover 51...Adjustment section 53…Screw plate 55…Adjustment screw 59...Tool insertion hole PW…width length SW…Slit width

Claims

1. A structure of an opening / closing body seat plate attached to a tip of an opening / closing body that opens and closes an opening by passing through an entrance / exit slit for the opening / closing body having a pair of lintels extending along the frontage direction of the opening, The opening / closing body seat plate has a seat plate main body fixed to a tip end of the opening / closing body, and a seat plate cover covering a lower surface of the seat plate main body and extending in a longitudinal direction of the opening / closing body seat plate, The width of the seat cover perpendicular to the longitudinal direction is smaller than the slit width of the entrance / exit slit perpendicular to the frontage direction, A structure of a seat plate for an opening / closing body, characterized in that the seat plate cover is fixed so as to be freely movable in the width direction relative to the seat plate body by an adjustment portion provided between the seat plate body and the seat plate cover.

2. The adjustment unit, At least at both ends of the opening / closing body seat plate in the longitudinal direction, A pair of screw plates formed on the seat plate cover sandwiching the seat plate body in the width direction; an adjustment screw that is screwed into the screw plate from the opposite side to the seat plate body and has a tip that abuts against the seat plate body; The structure of the opening / closing body seat plate according to claim 1, further comprising:

3. The screw plate and the adjustment screw are A seat cover is provided between the inside of the seat cover and the seat body. The seat plate cover is formed with a tool insertion hole that allows the head of the adjustment screw to be rotated, 3. The structure of the base plate for an opening / closing body according to claim 2, wherein a cover cap is detachably attached to the tool insertion hole.

4. The screw plate and the tool insertion hole on one side are provided on the seat plate body in the width direction, and the screw plate and the tool insertion hole on the other side are provided on the seat plate body in the width direction. The structure of the opening / closing body seat plate according to claim 3, characterized in that the opening / closing body seat plate is arranged offset from a straight line perpendicular to the width direction.

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