JPH0663640U - Formwork - Google Patents

Abstract

(57) [Summary] [Purpose] It is easy to assemble and enables reliable application of concrete for finishing. [Structure] The frame member 1 is provided with a slit 19 and the end of the connecting member 2 is inserted into the slit 19.
To connect. The frame member 1 has engaging portions 11 and 12 on upper and lower surfaces, and the engaging portions 11 and 12 are stacked while engaging with each other to construct a formwork. Pour concrete into the formwork and let it harden. The net body 3 is stretched on the outer surface of the frame member 1, and the finishing concrete is held by the net body 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a formwork used for constructing a foundation of a building, a wall or a structure such as a fence.

[0002]

[Prior art]

 The structure as described above is constructed by assembling a mold and pouring concrete into the mold to cure it. As the formwork used for this construction, two types of formwork have been conventionally used. The first formwork is a type that is dismantled after construction, and is constructed by assembling plate materials such as plywood and arranging reinforcing bars inside. This type of formwork is to be removed from the structure after the set concrete has hardened. The second formwork is of a buried type, and a plate-like frame member is formed of a small amount of plastic, and the formwork is constructed with the frame members facing each other. Then, concrete is poured between the frame members and hardened, but after this hardening or before hardening, concrete for finishing is applied to the outer surface of the frame member to embed it in the concrete and make it part of the structure. Is being done. In addition, it is also practiced to form a mold with an iron plate and similarly embed it in concrete to form a part of the structure.

[0003]

[Problems to be solved by the device]

 However, the first type of formwork that is dismantled is cumbersome in cutting and assembling the plate material according to the size of the target structure, and in the bundling of the reinforcing bars placed inside the plate material. However, it is difficult to handle because it takes a long time to construct a structure. On the other hand, the second type of formwork, which is buried, has the advantage that it is easy to assemble, but the concrete applied for finishing is difficult to fit in the frame member, so the formwork may be impacted from the outside. There was a problem that it was easily peeled off from the frame, and its repair was complicated.

The present invention has been made in consideration of the above circumstances, and provides a mold which is easy to construct, has excellent handleability, is lightweight, and does not peel off concrete for finishing even when buried. The purpose is to do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a space between a frame member to be connected and a frame member which is arranged opposite to each other with a space for forming a space for pouring concrete and is removed after the concrete is hardened. The engaging portions formed on the upper and lower surfaces and / or the side surfaces of the frame members so as to engage with each other and the engaging portions inserted so as to connect the opposing frame members and embedded in the concrete poured into the space between the frame members It is characterized by having a connecting member. Further, another formwork of the present invention is a frame member connected to a frame member which is arranged facing each other with a space for forming a space into which concrete is poured, and which constitutes a structure integrally with hardened concrete, and a frame member which is connected to the frame member. Engaging portions formed on the upper and lower surfaces and / or side surfaces of the frame member so as to engage with each other, a net body stretched on the outer side of the opening formed in the frame member, and the opposing frame It is characterized in that it is provided with a connecting member which is inserted so as to connect the members and is embedded in concrete poured into the space between the frame members. The formwork and the connecting member are formed of lightweight plastic.

[0006]

[Action]

 The formwork having any of the above configurations is easily constructed by arranging the frame members so as to face each other and connecting them with the connecting member. Also, when stacking the frame members in the vertical direction or connecting them in the horizontal direction, it is performed by engaging the engaging portions of the frame members with each other, which makes it possible to easily construct the formwork. . Then, the structure can be constructed by pouring concrete into the formwork thus constructed and hardening it. After constructing such a structure, the frame member may be removed or the frame member may be buried. In the latter case, the finishing concrete is applied to the outer surface of the frame member, but since this application is applied to the frame member equipped with a net, peeling of the finishing concrete is prevented. .

[0007]

【Example】

 FIG. 1 shows a first embodiment of the present invention, which comprises frame members 1 and 1 which are arranged to face each other with a gap, and connecting members 2 and 2 which are inserted between the frame members 1 and 1. There is. The frame members 1 and 1 are formed in a substantially rectangular shape, and the facing surface 13 is formed into a flat surface, and the frame members 1 and 1 are continuously arranged facing each other in the longitudinal direction according to the length of the mold. To be done. Engaging portions 11 and 12 are integrally formed on the upper and lower surfaces of the frame member 1. In the illustrated example, the upper engaging portion 11 is formed in the shape of a ridge, while the lower engaging portion 12 is formed in the shape of a groove, but the opposite is also possible. These engaging portions 11 and 12 have a dimensional relationship in which they engage with each other, and in the illustrated example, the protruding-shaped engaging portion 11 is fitted into the groove-like engaging portion 12. Therefore, the upper and lower frame members can be stacked stepwise by engaging the engaging portions 11 and 12 with each other, which allows the frame members corresponding to the height of the formwork to be stacked. ing. Reference numeral 14 is a pin hole formed on the opposing surfaces of the frame members 1 and 1, and 15 is a boss projection formed on the outer surface of the frame members 1 and 1 so as to communicate with the pin hole 14. Although the engaging portions 11 of the frame members 1 and 1 are formed on the upper and lower surfaces of the frame members 1 and 1 in this embodiment, they are provided on both side surfaces of the frame members 1 and 1 so that the frame members 1 and 1 can be connected laterally. You may.

The connecting member 2 connects the frame members 1 and 1 arranged so as to face each other, and is inserted between the frame members 1 and 1 at a predetermined interval. Further, the connecting member 2 is for adjusting the interval between the frame members 1 and 1 facing each other, and therefore, the length dimension corresponding to the width of the frame to be constructed is appropriately selected. The connecting member 2 is formed in a planar “I” shape, and the contact pieces 21 at both ends contact the inner surfaces of the frame members 1 and 1 to prevent the frame members 1 and 1 from falling inward. Further, an opening window 23 is formed in the intermediate piece 22 provided between the abutting pieces 21. The connecting member 2 is embedded in concrete (not shown) poured into the frame members 1 and 1 arranged opposite to each other. The opening window 23 acts so as to connect the concrete on both sides of the connecting member 2 to each other by inflowing the concrete separated by the intermediate piece 22. 24 is formed on the upper surface of the intermediate piece 22. Reinforcing bar support projections, which support the reinforcing bars so as to be located inside the reinforcing bar support projections 24, and prevent lateral displacement of the reinforcing bars.In this case, the reinforcing bars are connected by a clip or the like. It may be attached to the member 2. When a reinforcing bar in the same direction is required, a ring-shaped protrusion (not shown) through which the reinforcing bar in the same direction is inserted can be formed in the connecting member 2. By configuring in this way, the binding of the reinforcing bars can be performed. It is possible to easily incorporate the rebar into the formwork without the need for.

Next, the connecting structure of the frame member 1 by the connecting member 2 will be described with reference to FIGS. 1, 2 and 3. Pins 25 extending in the length direction are integrally formed on the contact pieces 21 at both ends of the connecting member 2. The pin 25 is inserted into the pin hole 14 formed in the frame member 1, and a fastening plate 16 made of a thin steel material such as stainless steel is provided inside the boss protrusion 15 communicating with the pin hole 14. There is. The fastening plate 16 is formed with radial notches 16b around an insertion hole 16a through which the pin 25 is inserted, so that the fastening plate 16 has elasticity. In such a structure, when the pin 25 of the connecting member 2 is inserted from the pin hole 14 into the insertion hole 16a of the fastening plate 16, the fastening plate 16 stands up in the insertion direction and bites into the pin 25, so that the frame member 1 and the connecting member 2 are firmly connected to each other, whereby the frame members 1 and 1 are connected by the connecting member 2 and the frame members 1 and 1 can be prevented from falling outward.

The mold is constructed by assembling the frame member 1 and the connecting member 2 as described above. However, since they are assembled by fitting, the construction can be performed easily. Then, after this assembling, concrete is poured into the space between the frame members 1 and 1 to be cured and hardened. In this embodiment, after this curing, the frame members 1 and 1 are removed and disassembled for reuse. During such disassembly, the frame members 1 and 1 are removed by cutting the pin 25 of the connecting member 2 from the root thereof. In this case, it is possible to remove only the frame member 1 on one side without removing all the frame members 1 and 1 facing each other, fix the connecting member 2 to the frame member 1 on the other side, and fill this frame member together with the concrete. It may be killed.

4 and 5 show another example of the coupling structure of the connecting member 2 and the frame member 1. In FIG. 4, the pin hole 14 of the frame member 1 is formed so as to be smaller than the pin 25 of the connecting member, and the pin 25 is pressed into the pin hole 14 by hammering with a wood hammer or the like. Then, the combination is performed. In FIG. 5, a hole 25a is formed in the pin 25, and a protruding pin 17 that is press-fitted into the hole 25a is formed in the frame member 1. In this case, a large number of grooves are formed on the inner surface of the hole 25a, and the tip end portion of the projecting pin 17 is formed to have a large diameter, so that the projecting pin 17 is press-fitted into the hole 25a so as to be connected to the connecting member 2. A strong connection with the frame member 1 is possible. In the case of FIG. 5, since the frame member 1 is arranged so as to be separated by the length of the pin 25 of the connecting member 2, the space between the frame members 1 is increased, and a large amount of concrete can be poured accordingly. As a result, a structure with increased strength can be obtained.

FIG. 6 shows a second embodiment of the present invention, and the same elements and structures as those of the first embodiment are designated by the same reference numerals and correspond to each other, thereby omitting duplicated description. In this embodiment, an example of a formwork that is buried and constructed is shown, and a plurality of openings 18 are formed in the frame member 1 that is connected by the connecting member 2 and is arranged to face each other. The openings 18 are formed so as to penetrate through the frame member 1 in the thickness direction, and the mesh bodies 3 are stretched in the openings 18. The mesh body 3 is stretched so as to be located outside the opening 18, that is, on the outer surface side of the frame member 1. In this embodiment, a “T” -shaped slit 19 is formed on the inner surface of the frame member 1, and the end of the connecting member 2 is inserted into this slit 19 to connect the connecting member 2 and the frame member 1. Is done. FIG. 7 shows a state in which the frame members 1 are arranged so as to face each other in the connected state of the connecting members 2, and in this case also the form can be easily constructed. Then, concrete is poured into the space between the frame members 1 for curing. In the present embodiment, the poured concrete is somewhat raised from the mesh of the mesh body 3 to the outer surface, but after removing this protruding portion or without removing it, the concrete for finishing the outer surface of the frame member 1 as it is. Apply. Since this finishing concrete is satisfactorily held by the net body 3, it does not peel off. Therefore, in this embodiment, the frame member 1 is integrated with the concrete to be buried and constitutes a part of the structure.

In each of the above embodiments, the material of the frame member 1 and the connecting member 2 may be steel or plastic. In the latter case, the use of lightweight foams such as styrene and urethane not only facilitates transportation and handling, but also has the advantage of enabling rapid, economical and accurate molding. .

[0014]

[Effect of device]

 As described above, since the removable frame members are arranged to face each other via the connecting member to form the mold, simple construction is possible, and the mold can be reused, which is economical. In addition, in the case of the buried type frame member, concrete for finishing can be reliably applied to the outer surface of the frame member, so that it is easy to handle and enables quick work, and its appearance is also improved. It is possible to build a structure.

[0015]

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a perspective view showing a connection between a connecting member and a frame member.

FIG. 3 is a front view showing a connecting portion of a frame member.

FIG. 4 is a perspective view showing a modification of the first embodiment.

FIG. 5 is a perspective view showing another modification of the first embodiment.

FIG. 6 is an exploded perspective view of a second embodiment of the present invention.

FIG. 7 is a perspective view of a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame member 2 Connection member 3 Net body 11 Engagement part 12 Engagement part

Claims (3)

[Scope of utility model registration request] 1. A frame member, which is arranged so as to face each other with a space for forming a space for pouring concrete, and which is removable after the concrete is hardened, and a frame member to be connected to each other so as to engage with each other. Equipped with engaging portions formed on the upper and lower surfaces and / or side surfaces of the frame member, and a connecting member that is inserted to connect the opposing frame members and is embedded in concrete poured into the space between the frame members. Formwork characterized by. 2. A frame member constituting a structure integrally with hardened concrete, which is opposed to and has a space for forming a space for pouring concrete, and the frame members to be connected are engaged with each other. The upper and lower surfaces of the frame member or /
And the engaging portion formed on the side surface, the mesh body stretched on the outer side of the opening formed in the frame member, and the mesh member inserted so as to connect the opposing frame members and poured into the space between the frame members. A formwork comprising a connecting member embedded in concrete. 3. The formwork, wherein the formwork and the connecting member are made of lightweight plastic.