Formwork components

Abstract

To provide a form member capable of forming a depth surface with a different depth at an end part of a rise part.SOLUTION: A form member 10 forms a depth surface 18a in an opening part 16 with an upper opening arranged in a rise part upon installation of a foundation 12. The depth surface 18a is formed at an end part of the rise part 18 upon the installation of the foundation 12. The form member 10 comprises: a support piece 46b fixed on inner and outer form panels 49 placed apart in parallel to each other with a foundation width and extending in a vertical direction; a depth form body 40 fixed on the support piece 46b and partitioning the depth surface 18a; and a first projected form body 42 projected from one end of the depth form body 40 in the depth direction to the outer peripheral side and partitioning a concave part 24. The depth form body 40 and the support piece 46b are connected by a height adjustment screw 66 screwed to a height adjustment nut 68. long holes 48ca, 52ca are formed in the support piece 46b to allow a height position of a connection member to be adjusted.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a formwork member for forming a projection surface at the end of a rising portion when pouring a concrete foundation. [Background technology]

[0002] The foundation of a building has a raised section that supports the building's frame. The raised section may have an upward-opening opening where an entrance or other structure will be located. In such an opening, a pair of concave surfaces are formed, making the raised section discontinuous. In such locations, a notched recess may be formed at the end of the raised section to avoid interference with the entrance frame. For this reason, Patent Document 1 proposes adding a block to the formwork to form a recess when pouring concrete. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Public Relations of JP 61-83768 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the left and right projections that form the opening may have different depths from the ceiling depending on the height of the rising part and the size of the entrance frame. The blocks used in Patent Document 1 cannot form projections of different depths.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a formwork member that can form concealed surfaces of different depths at the ends of the rising portions. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the formwork member of the present invention is a formwork member for forming a projected surface at an upwardly open opening provided in a rising portion when pouring a concrete foundation, and has support pieces fixed to inner and outer formworks arranged in parallel and separated by the width of the foundation and extending vertically, and a projected form body fixed to the support pieces and defining the projected surface, wherein the projected form body and the support pieces are connected by connecting members, and either the projected form body or the support pieces has a long hole that allows the height position of the connecting member to be adjusted. [Effects of the Invention]

[0007] In the formwork member according to the present invention, the height can be adjusted by the long holes and connecting members, and projection surfaces of different depths can be formed at the ends of the rising portions. [Brief explanation of the drawings]

[0008] [Figure 1] A cross-sectional view of the foundation and fittings. [Figure 2] FIG. 2 is a schematic longitudinal sectional view taken along the line II-II in FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 10 is a side view of a formwork member fixed in an elevated position relative to the formwork. [Figure 6] FIG. 10 is a side view of a formwork member fixed in a low position relative to the formwork. [Figure 7] This is an oblique view of a formwork member fixed to a formwork, as seen from outside the room. [Figure 8] FIG. 10 is a cross-sectional view of a foundation and fittings according to a modified example. [Figure 9] This is a perspective view of a formwork member when the second protruding mold body is removed and only the prospective mold body and the first protruding mold body are applied. [Figure 10]1 shows modified examples of formwork members, where (a) is a plan view of a formwork member according to a first modified example, (b) is a plan view of a formwork member according to a second modified example, (c) is a plan view of a formwork member according to a third modified example, (d) is a plan view of a formwork member according to a fourth modified example, (e) is a side view of a formwork member according to a fifth modified example, and (f) is a plan view of a formwork member according to a sixth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a formwork member according to the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0010] First, the foundation 12 formed by the formwork member 10 according to the embodiment of the present invention and the fittings 14 assembled to the foundation 12 will be described. FIG. 1 is a horizontal cross-sectional view of a foundation 12 and fittings 14. FIG. 2 is a schematic vertical cross-sectional view taken along the line II-II in FIG. 1. The foundation 12 is a mat foundation or a strip footing. The concrete for the foundation 12 may be poured in one step or two steps. The foundation 12 is, for example, for a house.

[0011] In this application, the "visible direction" refers to the indoor / outdoor direction of the frame to which the fitting 14 is attached. The "visible surface" refers to a surface extending along the "visible direction." The "visible direction" refers to a direction perpendicular to the visible direction, and in the case of a column or the like that is long in the vertical direction, it refers to the left-right direction that is perpendicular to its longitudinal direction, and in the case of a beam or the like that is long in the horizontal direction, it refers to the up-down direction that is perpendicular to its longitudinal direction. The "visible surface" refers to a surface along the visible direction. Furthermore, the "outer peripheral side" and "inner peripheral side" of the formwork member 10 are based on the fitting 14.

[0012] As shown in Figures 1 and 2, the foundation 12 has two rising portions 18, 20 that are discontinuous via an opening 16. When viewed from outside, the rising portion 18 is on the left and the rising portion 20 is on the right. The two rising portions 18, 20 are connected by a lower portion 22, but the lower portion 22 may be omitted depending on the design conditions. A rectangular recess (first recess) 24 is formed at the outside end of the rising portion 18, and a rectangular recess (second recess) 26 is formed at the inside end. A recess 28 is formed at the outside end of the rising portion 20, and a recess 30 is formed at the inside end. The ends of the rising portions 18 and 20 are symmetrical.

[0013] The fitting 14 is an entrance hall and comprises a frame 32 and a door panel 34. The frame 32 comprises a pair of vertical frames 32a, 32b, an upper frame (not shown), and a lower frame 32c. The door panel 34 is connected to one of the vertical frames 32b via a hinge so that it can be opened and closed. In this embodiment, the fitting 14 further comprises a pair of projection members 36, 38 that extend toward the interior of the room along the end faces of the rising portions 18, 20 to form a projection surface, and a pair of interior vertical frames 38a, 38b that are provided at the interior ends of the projection members 36, 38. The lower end of the vertical frame 32a is located within the space formed by the recess 24. The lower end of the vertical frame 32b is located within the space formed by the recess 28. The lower end of the interior vertical frame 38a is located within the space formed by the recess 26. The lower end of the interior vertical frame 38b is located within the space formed by the recess 30. In this way, by forming the recesses 24 to 30, the lower end of each vertical frame does not interfere with the rising portions 18, 20.

[0014] 3 is a schematic perspective view of the rising portions 18 and 20. The visible surface 18a of the rising portion 18 and the visible surface 20a of the rising portion 20 face each other via the opening 16. The opening 16 is where the fitting 14 is installed. The top end 18b of the rising portion 18 and the top end 20b of the rising portion 20 are at the same height.

[0015] Each recess 24, 26, 28, 30 is formed from the visible surface at the end of the rising portion to the visible surface and opens upward. The visible dimension of each recess 24-30 is W. The visible dimension of each recess 24-30 is X. The depth of each recess 24-30 from the top end 18b, 20b is D1. However, these depths may vary depending on the height of the rising portions 18, 20 and the size of the fitting 14, and may be, for example, D2, which is deeper than D1, as shown by the imaginary line.

[0016] The rising portion of the foundation 12 has an outer periphery and a central passage, and the rising portions 18, 20 in this embodiment are the outer periphery. However, depending on the design conditions, the formwork member 10 may also be used to form the opening end of a manhole in the central passage. Note that the term "outer periphery" here is used to distinguish it from the "central passage," and has a different meaning from the "outer periphery side" in the above directional definition of the formwork member 10.

[0017] Next, the formwork member 10 will be described. FIG. 4 is a plan view of the formwork member 10. FIG. 5 is a side view of the formwork member 10 fixed at a higher position relative to the formwork panel 49. FIG. 6 is a side view of the formwork member 10 fixed at a lower position relative to the formwork panel 49. FIG. 7 is a perspective view of the formwork member 10 fixed to the formwork panel 49, as seen from outside the room. As shown in FIGS. 4, 5, 6, and 7, the formwork member 10 has a projection body 40, a first protruding body 42, and a second protruding body 44. As will be described later, the first protruding body 42 and the second protruding body 44 have the same shape, and for convenience, they are referred to differently depending on their placement. The formwork member 10 is fixed to two fixing brackets 46. The formwork member 10 has the same appropriate height that allows the recesses 24 and 26 to be defined.

[0018] The projection body 40 has a rectangular columnar shape. Specifically, the projection body 40 has a cylindrical body 48 with a rectangular cross section and a bottom plate 50 that covers the bottom of the cylindrical body 48. The projection dimensions of the cylindrical body 48 and the rising portion 18 are equal. The outer peripheral projection surface 48a of the cylindrical body 48 is a mold surface that defines the projection surface 18a (see FIG. 3) at the end of the rising portion 18. In other words, the projection body 40 is a mold body that defines the projection surface 18a.

[0019] A pair of screw holes 48aa is formed in the outer peripheral projection surface 48a near the outdoor end at positions spaced apart vertically, and a pair of screw holes 48ab is formed in the indoor end at positions spaced apart vertically. A pair of screw holes 48ba is formed in the inner peripheral projection surface 40b near the outdoor end at positions spaced apart vertically, and a pair of screw holes 48bb is formed in the indoor end at positions spaced apart vertically. Screw holes 48aa and 48ba are positioned opposite each other. Screw holes 48ab and 48bb are positioned opposite each other. An elongated hole 48ca that is long in the vertical direction is formed in the outdoor projection surface 48c, and an elongated hole 48da (see FIG. 9) that is long in the vertical direction is formed in the indoor projection surface 48d. The elongated holes 48ca and 48da are positioned opposite each other. The elongated holes 48ca and 48da are formed toward the upper part of the projection body 40. The long holes 48ca and 48da are formed at the center of the projection body 40 in the projection direction.

[0020] The first protruding body 42 has a rectangular columnar shape. Specifically, the first protruding body 42 has a cylindrical body 52 with a rectangular cross section and a bottom plate 54 that covers the bottom of the cylindrical body 52. ​​The first protruding body 42 is a mold for defining the recess 24 at the outdoor end of the rising portion 18, and protrudes from the outdoor end of the recessed body 40 toward the outer periphery in the facing direction. In other words, the indoor facing surface 52d of the first protruding body 42 defines the outdoor facing surface of the recess 24, and the outer facing surface 52a defines the inner facing surface of the recess 24. The facing dimensions W and X of the first protruding body 42 are the same as those of the recess 24 (see Figure 3).

[0021] A pair of screw holes 52ba are formed in the inner peripheral visible surface 52b of the first protruding body 42 at positions spaced apart vertically. The screw holes 52ba are connected to the screw hole 48aa described above. A vertically long hole 52ca is formed in the outdoor visible surface 52c of the first protruding body 42. The long hole 52ca is formed at the same height as the long holes 48ca, 48da described above. The long hole 52ca is formed in the center of the first protruding body 42 in the visible direction and is appropriately spaced from the long hole 48ca.

[0022] The second protruding body 44 has the same shape as the first protruding body 42 and is compatible with it. Specifically, the second protruding body 44 has a cylindrical body 56 with a rectangular cross section and a bottom plate 58 covering the bottom of the cylindrical body 56. The cylindrical body 56 has the same shape as the cylindrical body 52, and the bottom plate 58 has the same shape as the bottom plate 54. The second protruding body 44 is a mold for defining the recess 26 at the indoor end of the rising portion 18, and protrudes outward from the indoor end of the recessed body 40 in the facing direction. In other words, the outdoor facing surface 56d of the second protruding body 44 defines the indoor facing surface of the recess 26, and the outer facing surface 56a defines the inner facing surface of the recess 26. The second protruding body 44 is symmetrical in the facing direction to the first protruding body 42.

[0023] However, if the recess 26 on the indoor side has dimensions different from the recess 24 on the outdoor side, a second protruding body 44A (see FIG. 9) with different dimensions may be used instead of the second protruding body 44. This second protruding body 44A has a projected dimension WA that is different from that of the second protruding body 44, and an apparent dimension XA that is different from that of the second protruding body 44. WA and XA fit the recess 26 on the indoor side.

[0024] The outer peripheral projection surface 52a, inner peripheral projection surface 52b, outdoor projection surface 52c, indoor projection surface 52d, elongated hole 52ca, and screw hole 52ba of the cylindrical body 52 are formed symmetrically with the outer peripheral projection surface 56a, inner peripheral projection surface 56b, indoor projection surface 56c, outdoor projection surface 56d, elongated hole 56ca, and screw hole 56ba of the cylindrical body 56 (see FIG. 9 for the elongated hole 56ca and screw hole 56ba). The cylindrical bodies 48, 52, and 56 are extruded metal materials such as aluminum alloy. The elongated holes 48ca, 48da, 52ca, and 56ca are also representatively referred to as elongated holes H. In this application, the elongated holes H used for height adjustment are not necessarily limited to holes closed on all four sides, but may also have a deep notch shape with the upper end opening to the edge of the cylindrical body.

[0025] The fixing bracket 46 is an angled member and has a fixing piece 46a and a support piece 46b that intersects the fixing piece 46a and forms a projection surface. The fixing piece 46a is fixed by screws or the like to the upper surface of a crosspiece 49a at the upper end of the form panel 49. In this way, the pair of support pieces 46b are fixed to the inner and outer form panels 49 via the fixing piece 46a, and extend vertically with the foundation width (i.e., the projection width of the rising portion 18) between them.

[0026] A pair of screw holes 46ba are formed in the support piece 46b near both ends in the finding direction. One of the fixing brackets 46 is fixed so that the support piece 46b is on an extension of the outdoor visible surface of the rising portion 18, and the other is fixed so that the support piece 46b is on an extension of the indoor visible surface of the rising portion 18. The support piece 46b is fixed at a position where the screw holes 46ba communicate with the elongated hole H.

[0027] The first protruding body 42 and the second protruding body 44 are fixed to the projection body 40 by two fixing screws 62 and two fixing nuts 64. The head 62a of the fixing screw 62 abuts against the inner peripheral surface wall of the hollow portion of the first protruding body 42 or the second protruding body 44, and the threaded portion penetrates the projection body 40 in the projection direction so as to pass through the screw holes 48aa, 48ab and 48ba, 48bb. The fixing nut 64 is threaded onto the portion of the fixing screw 62 that protrudes from the projection body 40, fixing the projection body 40 to the first protruding body 42 and the second protruding body 44. The fixing nut 64 is a wing nut. The first protruding body 42 and the second protruding body 44 can be removed from the projection body 40 by removing the fixing nut 64 from the fixing screw 62 and removing the fixing screw 62 from the projection body 40. In this way, the projection mold body 40, the first protruding mold body 42 and the second protruding mold body 44 can be easily attached and detached.

[0028] The formwork member 10 is connected and fixed to the support piece 46b with its height adjusted by two height-adjusting screws (connecting members) 66 and two height-adjusting nuts (connecting members) 68 on each of the exterior and interior sides. The head 66a of the height-adjusting screw 66 abuts against the front wall of the hollow portion of the first protruding mold body 42 or the second protruding mold body 44, and the threaded portion extends from the elongated hole H to the screw hole 46ba in the front direction. The height-adjusting nut 68 is threaded onto the portion of the height-adjusting screw 66 that protrudes from the support piece 46b, securing the formwork member 10 to the support piece 46b. The height-adjusting nut 68 is a wing nut. The height-adjusting nut 68 and the fixing nut 64 are essentially the same, but are referred to differently to distinguish their application locations. The heads 62a and 66a may be prevented from rotating by welding, a locking washer, or other means on the surface to be fastened.

[0029] In the formwork member 10 configured in this manner, a long vertical hole H is formed in each of the planar form body 40, the first protruding form body 42, and the second protruding form body 44, and a screw hole 46ba is formed in the corresponding support piece 46b. The formwork member 10 has a height adjustment nut 68 threadedly engaged with a height adjustment screw 66 that passes through the long hole H and the screw hole 46ba, so that the vertical height can be adjusted within the range of the length of the long hole H.

[0030] That is, as shown in Figure 5, when the height adjustment screw 66 is positioned at the bottom end of the elongated hole H, the formwork member 10 is positioned relatively high, and the recesses 26, 28 are formed at a shallow depth D1 from the top end 18b. Also, as shown in Figure 6, when the height adjustment screw 66 is positioned at the top end of the elongated hole H, the formwork member 10 is positioned relatively low, and the recesses 26, 28 are formed at a deep depth D2 from the top end 18b. Of course, the depth of the recesses 26, 28 can be adjusted arbitrarily within the range of D1 to D2, and the formwork member 10 can be used to form the visible surface 18a and recesses 24, 26 of different depths.

[0031] Furthermore, because the height adjustment nut 68 is a wing nut, no tools are required to adjust the height of the formwork member 10. The cylindrical bodies 48, 52, 56 are simple cylindrical bodies that are inexpensive, lightweight, and easy to handle. The cylindrical bodies 48, 52, 56 are made of metal and are highly durable, allowing for repeated use. Because the cylindrical bodies 48, 52, 56 are made of metal, they are easy to clean after removal from the formwork.

[0032] In some cases, the bottom plates 50, 54, and 58 of the formwork member 10 may be omitted. This is because the concrete to be poured has an appropriate viscosity and does not easily penetrate into the interior of the cylindrical bodies 48, 52, and 56. If the bottom plates 50, 54, and 58 are omitted, the visible surface of the lower portion 22 (see FIG. 3) may become somewhat rough, but this is not a problem because this surface is usually finished with mortar.

[0033] The formwork member 10 is fixed to the support pieces 46b at four locations and is stable, but depending on the conditions, it may be fixed at two locations, one on each of the indoor and outdoor sides. In other words, a long hole H may be formed in at least one of the projecting form body 40 and the first protruding form body 42, and a long hole H may be formed in at least one of the projecting form body 40 and the second protruding form body 44, and each may be fixed with a height adjustment screw 66 and a height adjustment nut 68. In this way, the formwork member 10 is appropriately stable if it is fixed at at least one location on each of the indoor and outdoor sides. Furthermore, although the formwork member 10 is fixed to the support pieces 46b at four locations and is stable, depending on the conditions, height adjustment is possible even if it is fixed at at least one of these locations.

[0034] Up to this point, we have explained an example of forming the visible surface 18a of the rising portion 18 and the recesses 24, 26 using the formwork member 10, but the formwork member 10 can also be used to form the recesses 28, 30 of the rising portion 20 (see Figure 3) by reversing the left and right directions. In this case, the second protruding mold body 44 faces the outside of the room and the first protruding mold body 42 faces the inside of the room, but the first protruding mold body 42 and the second protruding mold body 44 have the same shape and are simply named differently, and the depth of the recesses 28, 30 can be adjusted in the same way as when the recesses 24, 26 are formed using the formwork member 10.

[0035] As shown in Figure 8, some entrance fittings 14 do not have recessed members 36, 38, interior vertical frames 38a, and interior vertical frames 38b (see Figure 1). In this case, the rising portions 18, 20 do not need the interior-side recesses 26, 30. If the rising portion 18 does not have the interior-side recess 26 and only has the exterior-side recess 24, as shown in Figure 9, the second protruding mold body 44 can be removed from the formwork member 10 and only the recessed mold body 40 and the first protruding mold body 42 can be used. In this case, it is recommended that the screw holes 48ab be covered with tape 70.

[0036] Furthermore, although not shown, if the rising portion 20 does not have the recess 30 on the indoor side and only has the recess 28 on the outdoor side, the first protruding mold body 42 can be removed from the formwork member 10, and only the projecting mold body 40 and the second protruding mold body 44 can be used. At this time, it is advisable to cover the screw holes 48aa with tape 70. In this way, the formwork member 10 allows the first protruding mold body 42 and the second protruding mold body 44 to be easily attached and detached to the projecting mold body 40 by fastening the screws. Furthermore, because of its detachable configuration, it can also be applied to cases where only the outdoor recesses 24, 26 are formed.

[0037] Furthermore, depending on the configuration of the vertical frame 32a of the doorway fitting 14, the indoor and outdoor recesses 24, 26, 28, and 30 may not be necessary. In such cases, it is sufficient to remove both the first protruding mold body 42 and the second protruding mold body 44 from the formwork member 10. It is preferable to cover the designated screw holes with tape 70.

[0038] 10 shows modified examples of the formwork member 10, with (a) being a plan view of a formwork member 10A according to a first modified example, (b) being a plan view of a formwork member 10B according to a second modified example, (c) being a plan view of a formwork member 10C according to a third modified example, (d) being a plan view of a formwork member 10D according to a fourth modified example, (e) being a side view of a formwork member 10E according to a fifth modified example, and (f) being a plan view of a formwork member 10F according to a sixth modified example. In each modified example, identical or substantially similar components of the formwork member 10 described above are designated by the same reference numerals, and detailed descriptions thereof will be omitted. The same applies to the modifications.

[0039] In the above example, the formwork member 10 was fixed by two fixing brackets 46, but in each of the modified examples shown in Figure 10, each fixing bracket 46 is replaced with two fixing brackets 72, so a total of four fixing brackets 72 are used. The fixing brackets 72 are angle bars and have fixing pieces 72a and support pieces 72b that are perpendicular to the fixing pieces 72a. Each support piece 72b has a screw hole 72ba formed in it. The fixing brackets 72 are fixed at positions where the screw holes 72ba communicate with the elongated holes H. Of course, the above two fixing brackets 46 may also be used for each of the modified examples shown in Figure 10.

[0040] In a formwork member 10A according to a first modified example shown in Figure 10(a), the elongated hole 52ca is formed in a position closer to the outer periphery of the first protruding mold body 42, and the elongated hole 56ca is formed in a position closer to the outer periphery of the second protruding mold body 44. In this first modified example, the distance between the elongated hole 52ca and the elongated hole 48ca, and the distance between the elongated hole 56ca and the elongated hole 48da are longer, so that the formwork member 10A is supported more stably.

[0041] In a formwork member 10B according to a second modified example shown in Figure 10(b), the two height adjustment screws 66 used to adjust the height of the planar body 40 in the formwork member 10 described above are replaced with a single height adjustment screw 74. The height adjustment screw 74 passes through the cylindrical body 48 through the elongated holes 48ca and 48da, with the head 74a abutting one of the facing surfaces and the threaded portion protruding from the other facing surface and engaging with the height adjustment nut 68. In this second modified example, the number of times the height adjustment nut 68 needs to be screwed can be reduced. The height adjustment screw 74 may be a thumbscrew with the head 74a shaped like a butterfly.

[0042] In a formwork member 10C according to a third modified example shown in Figure 10(c), the cylindrical bodies 48, 52, and 56 each have a solid structure. In this case, the fixing screws 62 do not require heads, and only the threaded portions are provided so as to protrude from the inner peripheral visible surfaces 52b and 56b of the first protruding mold body 42 and the second protruding mold body, respectively, and may pass through the through-hole 48e of the cylindrical body 48 and protrude toward the inner peripheral side. In this third modified example, the formwork member 10C has even higher strength.

[0043] In a formwork member 10D according to a fourth modified example shown in FIG. 10(d), the projection dimensions of the projection body 40 are equal to the projection surface 18a (see FIG. 3) excluding the recesses 24, 26 in the rising portion 18. The first protruding body 42 and the second protruding body 44 extend to the same position as the inner peripheral projection surface 48b of the projection body 40 so as to cover the projection surface of the projection body 40. The projection body 40, the first protruding body 42, and the second protruding body 44 are fixed in place by a fixing nut 64 threadedly engaging a fixing screw 76 that penetrates these three components in the projection direction. The fixing screw 76 is similar to the height adjustment screw 74. This fourth modified example achieves substantially the same effects as the formwork member 10 described above. In this fourth variant, too, a first protruding mold body 42 protrudes outward from the outside end of the projection mold body 40 along the finding direction, and a second protruding mold body 44 protrudes outward from the inside end of the room along the finding direction, just like the formwork member 10 described above.

[0044] In a formwork member 10E according to a fifth modified example shown in Figure 10(e), screw holes are formed in the sighting surfaces 48c, 48d, 52c, and 52c of the planar body 40, the first protruding body 42, and the second protruding body 44, and elongated holes H are formed in the support pieces 72b at locations corresponding to the screw holes. In other words, while in the formwork member 10, elongated holes H are formed in the planar body 40, the first protruding body 42, and the second protruding body 44, and screw holes 64ba are formed in the support pieces 46b, the formwork member 10E has the opposite configuration. With this fifth modified example, substantially the same effects as those of the formwork member 10 described above can be obtained.

[0045] In a formwork member 10F according to a sixth modified example shown in FIG. 10(f), nuts 80 are provided at positions corresponding to the screw holes in the hollow portions of the cylindrical bodies 48, 52, and 56. The formwork member 10E is height-adjusted and fixed by threading four short thumbscrews 82 through the screw holes 72ba of the support pieces 72b and the long holes H of each cylindrical body into the nuts 80. This sixth modified example achieves substantially the same effects as the formwork member 10 described above. The nuts 80 may be omitted, and internal threads may be formed in each cylindrical body by tapping. Furthermore, the fixing screws 62 and fixing nuts 64 in the formwork members 10, 10A to 10E may be replaced with thumbscrews 82 and nuts 80. In this case, the nuts 80 may be prevented from rotating relative to the cylindrical body by welding or by using a locking washer. The fixing screws 62 may also be replaced with thumbscrews.

[0046] As with the formwork member 10 described above, the formwork members 10A to 10F according to each modified example can be applied to form not only the recesses 24, 26 in the rising portion 18 but also the recesses 28, 30 in the rising portion 20, and of course can also be applied to form only the recesses 24, 28 on the outside of the room without forming the recesses 26, 30 on the inside of the room.

[0047] The present invention is not limited to the above-described embodiment, and can of course be freely modified within the scope of the gist of the present invention.

[0048] The formwork member of the present invention is a formwork member for forming a projected surface at an upwardly open opening provided in a rising portion when pouring a concrete foundation, and comprises support pieces fixed to inner and outer formworks arranged in parallel and separated by the width of the foundation and extending vertically, and a projected form body fixed to the support pieces and defining the projected surface, wherein the projected form body and the support pieces are connected by connecting members, and either the projected form body or the support pieces has a long hole that allows the height position of the connecting member to be adjusted.

[0049] In such formwork members, the height can be adjusted using the long holes and connecting members, and prospective surfaces of different depths can be formed at the ends of the rising portions.

[0050] The concrete foundation may have a first recess formed in the projection surface, extending from one end in the projection direction to the outer periphery, and may have a first protruding mold body that protrudes from one end in the projection direction of the projection body to the outer periphery and defines the first recess. This makes it applicable to cases where a first recess is required in an opening, such as a front door, depending on the installation method.

[0051] The formwork member according to the present invention may have a fixing screw that penetrates from the first protruding mold body to the prospective mold body in the prospective direction, and a fixing nut may be threaded onto the portion of the fixing screw that protrudes from the prospective mold body, thereby fixing the prospective mold body and the first protruding mold body. This allows for easy attachment and detachment.

[0052] In the formwork member according to the present invention, the concrete foundation may have a second recess formed therein extending from the other end of the projection surface in the projection direction toward the outer periphery, and may have a second protruding mold body protruding from the other end of the projection direction of the projection body toward the outer periphery to define the second recess. This makes the formwork member applicable to cases where a first recess is formed in an opening, and cases where both the first recess and the second recess are formed.

[0053] In the formwork member according to the present invention, the first protruding mold body and the second protruding mold body may have the same shape, whereby interchangeability is achieved. [Explanation of symbols]

[0054] 10, 10A, 10B, 10C, 10D, 10E, 10F formwork members, 12 foundation (concrete foundation), 14 fittings, 16 opening, 18, 20 rising portion, 18a, 20a projection surface, 24, 26, 28, 30 recess, 40 projection body, 42 first protruding body, 44 second protruding body, 46, 72 fixing hardware, 46a, 72a fixing piece, 46b, 72b support piece, 46ba screw hole, 48, 52, 56 cylinder, 48aa, 48ab, 48ba, 48bb screw hole, 48ca, 48da, 52ca, 56ca, H slotted hole, 49 formwork panel, 50, 54, 58 bottom plate, 62 fixing screw, 64 fixing nut, 66 height adjustment screw (connecting member), 68 Height adjustment nut (connecting member)

Claims

1. A formwork member for forming a prospective surface at an upwardly open opening provided in a rising portion when pouring a concrete foundation, Support pieces fixed to inner and outer formworks arranged parallel to each other across the foundation width and extending vertically; A projection body fixed to the support piece and defining the projection surface; and The projection body and the support piece are connected by a connecting member, and either the projection body or the support piece has a long hole that allows the height position of the connecting member to be adjusted. A formwork member characterized by:

2. The concrete foundation has a first recess formed therein extending from one end of the prospective surface in the prospective direction to the outer periphery, A first protruding mold body protrudes from one end of the projection mold body in the projection direction toward the outer periphery and defines the first recess.

2. The formwork element according to claim 1.

3. a fixing screw penetrating from the first protruding mold body to the prospective mold body in a prospective direction; A fixing nut is screwed onto the portion of the fixing screw that protrudes from the projection body, thereby fixing the projection body and the first protruding body.

3. The formwork element according to claim 2.

4. The concrete foundation has a second recess formed therein extending from the other end of the projection surface in the projection direction to the outer periphery, A second protruding mold body protrudes from the other end of the projection mold body in the projection direction toward the outer periphery and defines the second recess.

4. A formwork member according to claim 2 or 3.

5. The first protruding body and the second protruding body have the same shape.

5. The formwork element according to claim 4.

Images