JPH08277589A - Concrete form - Google Patents

Abstract

PURPOSE: To make it possible to eliminate the need for a temporary installation space of temporary reinforcing materials and removal work as well. CONSTITUTION: This concrete form 11 comprises forms/blocks 12a and 12b and a connection board 13. The connection board 13 is installed between inner faces of both blocks 12a and 12b which are opposed to each other. A flange 18 installed to both ends of the connection board 13 and its neighboring area are buried inside the blocks 12a and 12b which serve as a form. The forms/ blocks 12a and 12b and the connection board 13 are combined into a single unit member. This construction makes it possible to form a concrete placement space S with a specified spacing only by setting up the concrete form 11 in a construction site.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete formwork, for example, a concrete formwork used when forming a concrete wall or the like.

[0002]

2. Description of the Related Art Conventionally, as a concrete formwork of this type, one disclosed in Japanese Patent Laid-Open No. 306556/1993 is known. This mold consists of a pair of facing molds, one of which is a heat insulating board that also serves as a mold, the other is a control panel material, and both are fixed by a temporary reinforcement material consisting of a flap material, a separator and a foam tie. A concrete pouring space is formed between the frames.

[0003]

However, in the above-mentioned formwork, the concrete reinforcement must be fixed by the temporary reinforcement every time the concrete is placed, and after the completion of the construction, the temporary reinforcement and the control panel material must be removed. I had to.

[0004] In the concrete placing space, vertical streaks are usually embedded in the cloth foundation to stand upright in the vertical direction with respect to the cloth foundation, and horizontal streaks are installed so as to be parallel to the cloth foundation. . At this time, in order to hold the horizontal stripes, the vertical stripes and the horizontal stripes must be bound with a wire or the like, and this work was very troublesome.

The present invention has been made to solve the above problems, and a first object thereof is to eliminate the need for temporary installation and withdrawal work of a temporary reinforcement. The second purpose is
The purpose of the present invention is to eliminate the work of binding the vertical and horizontal stripes to hold the horizontal stripes.

A third object is to prevent displacement of the lateral streaks during concrete pouring.

[0007]

In order to achieve the above object, the invention according to claim 1 has a pair of formwork / blocks which are opposed to each other at a predetermined interval to be a concrete placing space. The gist of the invention is that the connecting member for connecting and fixing the blocks is made into a single member.

The gist of the invention according to claim 2 is that the connecting member connects between the inner surfaces of the two blocks which face each other. The gist of the invention according to claim 3 is that the connecting member is provided with a lateral streak engaging portion.

[0009]

According to the invention described in claim 1, the concrete formwork in which the block also serving as the formwork and the connecting member are made into a single member is arranged at the construction site to form the concrete placing spaces at predetermined intervals. It Therefore, it is not necessary to temporarily install a temporary reinforcing member to form the concrete pouring space or to remove it.

According to a second aspect of the present invention, the first aspect
In addition to the effect of the invention described in (1), as a result of the horizontal members being supported by the connecting member, the work of binding the horizontal bars and the vertical bars to support the horizontal bars is unnecessary.

According to a third aspect of the present invention, the first aspect
Alternatively, in addition to the effect of the invention described in item 2, the horizontal reinforcement is prevented by the horizontal reinforcement locking portion, and thus the positional deviation of the horizontal reinforcement at the time of placing concrete is prevented.

[0012]

[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 3, the concrete formwork 11 of the first embodiment is composed of two formwork-use blocks 12a and 12b and a plurality of connecting plates 13 as connecting members.

The mold / blocks 12a and 12b are made of styrofoam and are formed in a rectangular parallelepiped shape as a whole. The formwork / blocks 12a and 12b can be used as a heat insulating / soundproofing material and a dew condensation preventing material after the concrete is placed, and are not removed even after the construction is completed. Same formwork block 12
On the upper surfaces of a and 12b, a plurality of convex portions 1 are arranged at equal intervals in the longitudinal direction.
4 is projected, and the same frame and block 12a,
On the lower surface of 12b, a plurality of concave portions 15 that fit into the convex portions 14 are formed at positions corresponding to the convex portions 14. Then, the plurality of concrete forms 11 can be stacked by engaging the protrusions 14 with the recesses 15 of the other formwork block 12. In addition, the block 12 that also serves as the formwork
The dovetail groove 16 is formed in the vertical direction on one side of the a and 12b, and the dovetail 17 corresponding to the dovetail groove 16 is formed on the other side. Therefore, the presence of another formwork / block 12 having the same dovetail groove 16 adjacent thereto 1
A plurality of concrete formwork 11 can be connected by engaging 7 and dovetail 17 with the dovetail groove 16 of another adjacent formwork / block 12.

The connecting plates 13 are made of a metal plate, and a plurality (three in this embodiment) are arranged at equal intervals between the inner surfaces of the blocks 12a and 12b facing each other. Flange portions 18 bent at right angles in opposite directions are provided at both ends of the connecting plate 13, and the flange portions 18 and the vicinity thereof are also used as the formwork blocks 12a and 12b.
It is buried inside. Therefore, the flange portion 18 prevents the connecting plate 13 from coming off from the formwork-use blocks 12a and 12b.
b and the connecting plate 13 are made into a single member. And
A concrete placing space S is formed between the facing surfaces of the blocks 12a and 12b.

Further, a plurality of (two in the present embodiment) notches 19 serving as a lateral streak locking portion are formed in the connecting plate 13 in a V-shape as shown in FIG. The notch 19 is formed such that its width is slightly larger than the outer diameter of the horizontal stripe Y, and the notch 19
The horizontal bar Y can be engaged through the upper opening of the horizontal bar Y, and the horizontal bar Y is locked at the bottom of the notch 19. In addition, the shape of the notch 19 is formed in an oblique direction so that the horizontal streaks Y do not float up when the concrete is filled.

Next, the operation of the concrete formwork 11 of the first embodiment will be described. When placing concrete, a fabric foundation is first formed, and vertical lines (not shown) are embedded in the fabric foundation to stand vertically with respect to the fabric foundation. Then, the concrete formwork 11 is arranged so that the vertical streaks are arranged in the concrete placing space S. And
If necessary, the convex portion 14 is engaged with the concave portion 15 of the other formwork / block 12 to stack the concrete formwork 11,
Alternatively, the dovetail groove 16 and the dovetail groove 17 connect another concrete formwork 11 in the longitudinal direction. Next, the horizontal stripe Y is moved from the position indicated by the alternate long and short dash line in FIG. 2 to the position shown by the solid line, and is inserted into the notch 19 on the connecting plate 13 to lock the horizontal stripe Y.
Then, in this state, the concrete placing space S can be filled with concrete.

In this embodiment, the blocks 12a and 1 also serving as the formwork are used.
2b and the connecting plate 13 are made into a single member, the connecting plate 13
Is disposed between the inner surfaces of the blocks 12a and 12b facing each other, and the connecting plate 13 is provided with a notch 19 as a lateral streak engaging portion.

That is, according to the present embodiment, since the blocks 12a and 12b also serving as the formwork and the connecting plate 13 are made into a single member, the concrete formwork 11 is simply placed at the construction site and the concrete forms having predetermined intervals are provided. A casting space S is formed. For this reason, it is not necessary to temporarily install a temporary reinforcing material to form the concrete pouring space S or to remove it.

Further, as a result of the horizontal bar Y being locked by the notch 19 provided on the connecting plate 13, it is not necessary to bind the horizontal bar Y and the vertical bar to support the horizontal bar Y, and at the same time, concrete placing is performed. It is possible to prevent the lateral streaks Y from being displaced.

Further, since the blocks 12a and 12b also serving as the formwork are made of styrofoam, the concrete formwork 11 can be used as a heat insulating / soundproofing material and a dew condensation preventing material after the completion of construction. In addition, when performing post-work such as piping work, pipes can be installed in the blocks 12a and 12b by scraping off part of the formwork block 12a or 12b. Therefore, the wall thickness does not increase.

Further, the convex portion 14 and the concave portion 15 allow the other formwork / blocks 12 to be vertically stacked, and the dovetail grooves 16 and 17 allow the other formwork / blocks 12 to be connected to the left and right.

[0022]

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. The concrete formwork 20 of the second embodiment shown in FIG. 4 has a connecting plate 2 which is different from that of the first embodiment.
The only difference is that notch 1 is not provided in 1.

Therefore, in this embodiment, the horizontal bars Y can be placed and supported on the connecting plate 21, but the same as the first embodiment except that the horizontal bars are not provided. The effect of can be obtained.

The present invention can be configured as follows in addition to the embodiments described above. (1) Styrofoam was used in the first and second embodiments as the mold / block, but metal, wood, or plastic may be used as long as it can be used as a wall material.

(2) Although the connecting plate 13 made of metal is used as the connecting member in the first and second embodiments, it may be made of plastic or wood. Further, the shape of the connecting member is not limited to the plate shape, and may be a rod shape, a wire, or a string shape.

(3) In the first and second embodiments, the concrete formwork can be stacked vertically by the convex portion 14 and the concave portion 15, but can be engaged by another method such as connection by a connecting fitting or adhesion. May be Similarly, the first
In the second embodiment, the dovetail groove 16 and the dovetail 17 allow engagement with another adjacent formwork block 12 as well.
Engagement may be achieved by other methods such as simple engagement by concavo-convex fitting, connection by connecting fittings, or adhesion by adhesive means.

(4) As the concrete formwork, in the first and second embodiments, a rectangular parallelepiped formwork / block 12 is used.
Although a and 12b are arranged so as to be parallel to each other, two blocks that are also used as a formwork may be arranged so as to face each other, which are formed by bending in a large and small L-shape. In this case, concrete pouring work can be performed at the corner.

(5) In the first embodiment, the notch 19 is provided as the horizontal streak engaging portion, but a through hole formed slightly larger than the outer diameter of the horizontal streak Y may be provided. Further, instead of forming the notch 19 in the oblique direction, the notch 19 may be formed in the vertical direction and a stopper fitting may be provided in the opening of the notch.

The following are examples of applications of the present invention. The concrete formwork 22 shown in FIG. 5 is different from the first and second embodiments in the shape of the connecting plate 23 and the state of connection with the formwork / blocks 12a and 12b. The connecting plate 23 has a plate-like shape, and through-holes 24 that fit into the protrusions 12 are formed near both ends of the connecting plate 23, and the connecting plates 23 are detachably arranged on the upper surfaces of the blocks 12a and 12b also serving as the formwork. A groove 25 is formed around the convex portion 14 on the upper surface of the mold / block 12a, 12b.
When the through hole 24 of the connecting plate 23 is fitted and connected to
The end of the connecting plate 23 is housed in the groove 25. In this case, since the connecting plate 23 is detachable, it is convenient to carry it before the construction work, and the connecting plate 23 and the blocks 12a and 12b also serving as the formwork can be removed after the construction work is completed. Further, by preparing the connecting plates 23 having a plurality of lengths, it is possible to form the concrete placing spaces S at various intervals.

The technical ideas that can be understood from the above application examples will be described below. A concrete formwork in which a pair of formwork / blocks, which are opposed to each other at a predetermined interval to be a concrete placing space, and a connecting member for connecting the two blocks are detachably provided from both blocks.

Next, technical ideas other than the claims which can be understood from the above embodiments will be described below along with their effects. (A) In the concrete formwork according to any one of claims 1 to 3, the formwork / block is provided with engaging means for engaging with another adjacent block. Formwork. In this case, by the engagement means,
It is possible to stack vertically and to connect left and right by engaging other adjacent blocks that also serve as formwork.

(B) In the concrete formwork according to any one of claims 1 to 3, the formwork-use block is a concrete formwork made of a foam material. In this case, the concrete formwork can be used as a heat insulating / soundproofing material and anti-condensation material after the completion of construction. Further, when the post-work such as the plumbing work is performed, the pipe can be installed in the block by cutting off a part of the block. Therefore, the plumbing work can be easily performed and the wall thickness does not become large for the pipe installation.

(C) In the concrete formwork according to any one of claims 1 to 3, the horizontal bar engaging portion provided on the connecting member is a notch formed in an oblique direction. In this case, the horizontal bar is locked in the notch, and the horizontal bar can be prevented from floating when the concrete is filled.

[0034]

According to the invention described in claim 1, since the block also serving as the frame and the connecting member are made into a single member,
Only by placing the concrete formwork at the construction site, concrete placing spaces with predetermined intervals are formed. For this reason, it is not necessary to temporarily install a temporary reinforcing material to form the concrete pouring space or to remove it.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, as a result of the horizontal members being supported by the connecting member, the horizontal members and the vertical members are bound together to support the horizontal members. Eliminates the need for work.

According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, as a result of the lateral ribs being locked by the lateral bar engaging portion, the lateral bars are displaced during concrete placement. Can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a concrete formwork of a first embodiment.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a top view of the same.

FIG. 4 is a side sectional view of the concrete formwork of the second embodiment.

FIG. 5 is a top view of a concrete formwork of an application example.

[Explanation of symbols]

11, 20 ... Concrete formwork, 12a, 12b ... Formwork / block, 13, 21 ... Connecting plate as connecting member,
19 ... Notches as lateral streak locking parts, Y ... lateral streak, S ... concrete placing space.

Claims (3)

[Claims] 1. A concrete formwork in which a pair of formwork-cum-blocks facing each other at a predetermined interval, which is a space for placing concrete, and a connecting member for connecting and fixing both blocks are made into a single member. 2. The concrete formwork according to claim 1, wherein the connecting member connects between mutually facing inner surfaces of the both blocks. 3. The concrete formwork according to claim 1, wherein the connecting member is provided with a lateral streak engaging portion.