JP2920049B2 - Concrete formwork - Google Patents

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 placing, for example, cloth-based concrete.

[0002]

2. Description of the Related Art In general, when casting a cloth foundation concrete, a plurality of concrete forms are combined in a lateral direction. Each concrete form is provided with a forming plate, and a vertical side plate is formed on both left and right sides, and a horizontal side plate is formed on the upper and lower portions. Further, a reinforcing cylinder made of each pipe is joined and fixed inside the vertical side plate. This concrete form is entirely made of iron material.

[0003]

However, since the above-mentioned conventional concrete form is entirely made of iron material, the weight increases and the concrete adheres to the molding surface of the molding plate after casting the concrete. Therefore, it was necessary to apply a release agent to the molding surface of the molding plate before casting concrete.

[0004] A first object of the present invention is to provide a concrete formwork which can reduce the weight and does not require applying a release agent before placing concrete. A second object of the present invention is to provide a concrete formwork capable of improving the mechanical strength of the upper and lower portions of a molded plate in addition to the first object.

A third object of the present invention is to provide a concrete formwork capable of reducing the weight of a vertical reinforcing cylinder and upper and lower horizontal reinforcing cylinders in addition to the above first or second object. .

A fourth object of the present invention is to provide a concrete formwork capable of easily connecting mold forms in addition to any one of the first to third objects. is there.

A fifth object of the present invention is to provide, in addition to any one of the first to third objects, a concrete form capable of preventing a vertical reinforcing cylinder and a horizontal reinforcing cylinder from being detached from a side plate. Is to provide.

[0008]

According to the first aspect of the present invention, in order to achieve the first object, a molded plate is formed of a resin material, and vertical side plates formed of a resin material are formed on both left and right sides thereof. At the same time, a horizontal side plate made of a resin material is formed on the upper and lower portions, and a vertical reinforcing cylinder having a concave cross section made of a metal material is fitted to the left and right vertical side plates.

According to a second aspect of the present invention, in order to attain the second object, in the first aspect, the upper and lower horizontal side plates have a concave upper and lower cross section made of a metal material. Means of fitting a horizontal reinforcing cylinder is adopted.

According to a third aspect of the present invention, in order to attain the third object, in the first or second aspect, the vertical reinforcing cylinder is partially provided corresponding to a connecting portion with another concrete formwork. Means of fitting are taken.

According to a fourth aspect of the present invention, in order to achieve the fourth object, a horizontal through hole is formed in the vertical reinforcing cylinder and the vertical side plate according to any one of the first to third aspects. A connecting rod is inserted into the through hole so as to be able to reciprocate in a horizontal direction, and a U-shaped fitting for fixing a pair of vertical reinforcing cylinders of the adjacent concrete formwork to the connecting rod is attached. I have.

According to a fifth aspect of the present invention, in order to achieve the fifth object, in any one of the first to third aspects, between the vertical side plate and the vertical reinforcing cylinder, and between the horizontal side plate and the horizontal reinforcing cylinder. Means is provided for providing a separation preventing means for preventing separation of the reinforcing tube between the tube and the tube.

[0013]

According to the first aspect of the present invention, since the molded plate, the vertical side plate and the horizontal side plate are made of resin, the weight is reduced, and the molded plate is easily peeled off from the concrete after the concrete is poured. The operation of applying the release agent to the molding surface of the molding plate becomes unnecessary.

According to the second aspect of the present invention, since the horizontal reinforcing cylinder is attached to the upper and lower horizontal side plates, the strength of the horizontal side plate is improved in addition to the operation of the first aspect.

According to the third aspect of the present invention, since the vertical reinforcing cylinder made of a metal material is partially attached, the weight can be reduced. Further, in the invention according to the fourth aspect, since the connecting rod and the U-shaped fitting are attached to the vertical side plate and the vertical reinforcing cylinder, the connecting work between the molds becomes easy.

Furthermore, in the invention according to claim 5, detachment of the reinforcing cylinder from the vertical side plate and the horizontal side plate is prevented, and the handling of the mold is facilitated.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The horizontally long rectangular shaped plate 1 is formed of a resin material having high corrosion resistance to concrete, and a left vertical side plate 1a and a right vertical side plate 1b are integrally formed on the left and right sides of the rear surface of the formed plate 1 and parallel to each other. It is molded. An upper horizontal side plate 1c and a lower horizontal side plate 1d are formed integrally and in parallel with each other at both upper and lower edges of the molded plate 1.

The vertical side plates 1a and 1b are fitted with U-shaped vertical reinforcing cylinders 2 and 3 made of an iron plate.
The vertical reinforcing cylinders 2 and 3 are, as shown in FIG.
a (3a), 2b (3b) and connecting plate 2 for connecting both side plates
c (3c) to form a flat rectangular tube with one surface open. Through holes 4 to 4 are formed in the vertical side plates 1a and 1b and the vertical reinforcing cylinders 2 and 3 at two upper and lower positions in a horizontal direction. The outer side surfaces of the vertical side plates 1a, 1b are located at a predetermined distance from the left and right end surfaces of the molded plate 1, that is, the inside of the thickness of the iron plate forming the vertical reinforcing tubes 2, 3, and the vertical reinforcing tubes 2, 3 are fitted. In the combined state, the outer surfaces of the reinforcing cylinders 2 and 3 and the left and right end surfaces of the molded plate 1 are flush.

As shown in FIG. 3, the vertical side plates 1a, 1
locking recesses 1 which constitute a separation preventing means on both left and right side surfaces of b
e, 1e are formed, and the side plates 2a (3) of the vertical reinforcing cylinders 2, 3 are formed.
a), 2b (3b), the locking recesses 1e, 1
e, a locking projection 2d (3d) for preventing the reinforcing cylinders 2, 3 from coming off is formed.

In the concrete formwork configured as described above, since the molded plate 1 is made of a resin material, the weight can be reduced. In addition, since concrete is easily peeled off from the molded plate 1, it is possible to prevent the concrete from adhering to the molded surface of the molded plate 1 without applying a release agent to the molded surface of the molded plate 1 in advance, and to perform a cleaning operation. It can be done easily.

Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, the concrete formwork of the first embodiment is provided with a mechanism for connecting the formworks to each other. An L-shaped mounting member 5 is fixed to the back surface of the molded plate 1 at a predetermined distance from the reinforcing tube 2 integrally or by bonding, etc., corresponding to the through holes 4 and 4 of the left vertical reinforcing tube 2. Have been. The mounting member 5 also has a through-hole 5a corresponding to the through-hole 4, and each of the through-holes 4, 5a supports two upper and lower connecting rods 6 so as to be able to reciprocate horizontally. A U-shaped metal fitting 7 for holding the vertical reinforcing cylinders 2 and 3 connected to each other of the concrete formwork is attached to an intermediate portion of the connecting rod 6.

In this embodiment, the U-shaped bracket 7 is moved in the horizontal direction together with the connecting rod 6 to clamp and fix different vertical side plates 2 and 3 which are joined to each other.

Next, a third embodiment of the present invention will be described with reference to FIG. In this embodiment, the upper horizontal side plate 1c of the formed plate 1
An upper horizontal reinforcing cylinder 8 and a lower horizontal reinforcing cylinder 9 having a U-shaped cross section made of an iron plate in the same manner as the above-described reinforcing cylinders 2 and 3 are fitted and fixed to the lower horizontal side plate 1d. Other configurations are the same as those of the second embodiment.

Accordingly, the strength of the upper and lower horizontal side plates 1c and 1d is improved, and the durability of the concrete formwork can be increased. Next, a fourth embodiment of the present invention will be described with reference to FIG.

In this embodiment, the left and right vertical side plates 1a, 1b
The vertical length of the vertical reinforcing cylinders 2 and 3 made of an iron plate to be fitted to the vertical direction is shortened. Therefore, the weight can be reduced.

The present invention is not limited to the above embodiment, but can be embodied as follows. (1) As shown in FIG. 8, in the embodiment of FIG. 6, the horizontal reinforcing cylinders 8, 9 are fitted to the upper and lower horizontal side plates 1c, 1d.

(2) The mounting member 5 is formed integrally with the short reinforcing cylinder 2 as shown in FIG. Further, as shown in FIG. 10, a plurality of mounting members 5 are integrally formed on the long reinforcing cylinder 2.

(3) In the above embodiment, the locking projections 2d (3d) and the locking recesses 1e are used as the detachment preventing structure as shown in FIG.
However, instead of this, screws or tacks (not shown) should be used. Also, the reinforcing cylinders 2, 3, 8, 9 are connected to the side plates 1a to
Press-fit to 1d.

(4) In the above embodiment, the vertical reinforcing cylinders 2 and 3 and the horizontal reinforcing cylinders 8 and 9 are formed separately, but these are integrally formed in a square frame shape. (5) The same fitting structure as that of the vertical reinforcing tubes 2 and 3 is used as the fitting structure of the horizontal reinforcing tubes 8 and 8.

[0030]

As described in detail above, the present invention has the following effects because it is constructed as shown in the claims.

According to the first aspect of the present invention, it is possible to reduce the weight of the concrete formwork and to eliminate the need for applying a release agent in advance before placing concrete.

According to the second aspect of the invention, the strength of the upper and lower horizontal side plates can be improved. According to the third aspect of the present invention, the weight of the vertical reinforcing cylinder can be reduced.

Further, according to the fourth aspect of the present invention, since the connecting rod and the U-shaped fitting are attached to the vertical reinforcing cylinder, the work of connecting the concrete forms can be easily performed.

Further, according to the fifth aspect of the present invention, it is possible to prevent the detachment of the reinforcing cylinder from the vertical side plate and the horizontal side plate.

[Brief description of the drawings]

FIG. 1 shows a first concrete formwork embodying the present invention.
It is a perspective view showing an example.

FIG. 2 is an exploded perspective view of the concrete formwork of the first embodiment.

FIG. 3 is an exploded cross-sectional view showing an attachment structure between a forming plate and a reinforcing cylinder.

FIG. 4 shows a second concrete formwork embodying the present invention.
It is a perspective view showing an example.

FIG. 5 is an exploded perspective view of a concrete formwork of the second embodiment.

FIG. 6 is a perspective view of a concrete formwork showing a third embodiment of the present invention.

FIG. 7 is a perspective view of a concrete formwork showing a fourth embodiment of the present invention.

FIG. 8 is a perspective view of a concrete formwork showing another example of the present invention.

FIG. 9 is a perspective view showing another example of a reinforcing cylinder.

FIG. 10 is a perspective view showing another example of a reinforcing cylinder.

[Description of Signs] 1 ... Molded plate, 1a, 1b ... Left and right vertical side plates, 1c, 1d ...
Upper and lower horizontal side plates, 1e: locking recesses constituting the separation prevention means, 2 (3) ... vertical reinforcing cylinders, 2d, 3d ... locking projections forming the separation prevention means, 4 ... through holes, 5 ... mounting members, 6 …
Connecting rod, 7: U-shaped bracket, 8, 9: Horizontal reinforcing cylinder.

Claims (5)

(57) [Claims] 1. A molded plate is formed of a resin material, a vertical side plate made of a resin material is formed on both left and right sides thereof, and a horizontal side plate made of a resin material is formed on upper and lower portions thereof. A concrete formwork characterized by fitting a vertical reinforcing cylinder made of a metal material and having a concave cross section. 2. The concrete formwork according to claim 1, wherein upper and lower horizontal reinforcing cylinders each having a concave cross section made of a metal material are fitted to the upper horizontal side plate and the lower horizontal side plate. 3. The concrete formwork according to claim 1, wherein the vertical reinforcing cylinder is partially fitted in correspondence with a connection point with another concrete formwork. 4. The method according to claim 1, wherein
A horizontal through-hole is formed in the vertical reinforcing cylinder and the vertical side plate, and a connecting rod is inserted into the through-hole so as to be able to reciprocate in a horizontal direction, and a pair of vertical reinforcements of a concrete form adjacent to the connecting rod. A concrete formwork having a U-shaped fitting for clamping and fixing a tube. 5. The method according to claim 1, wherein:
A concrete formwork comprising detachment preventing means for preventing detachment of the reinforcing tube between the vertical side plate and the vertical reinforcing tube and between the horizontal side plate and the horizontal reinforcing tube.