JPH0514233U - Basic formwork for underfloor communication port - Google Patents

Abstract

(57) [Summary] [Objective] The present invention is a formwork that is provided to form an underfloor communication port during foundation construction of a building, in which the bottom surface of the formwork bottom is also filled with concrete, and the formwork can be easily pulled out. This is what constitutes a simple formwork. [Constitution] In the underfloor communication port formwork 1 fitted in the foundation formwork 3 to form an underfloor communication port at the time of foundation construction of a building, a corner cut portion 1a is formed on the lower side and an inclined portion is formed on the side surface. 1b is configured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a formwork for forming an underfloor communication port in a partition part in a foundation of a building such as a house.

[0002]

[Prior Art]

 The conventional technique will be described with reference to FIGS. 7, 8 and 9. FIG. 7 is a front view showing a state in which a conventional underfloor connecting form is placed on a base form, FIG. 8 is a perspective view of the same, and FIG. 9 is a view showing a state in which concrete is placed in the state of FIG.

Conventionally, as a method of constructing an underfloor communication port, as shown in FIGS. 7 and 8, a dedicated formwork is arranged at the time of constructing a base formwork after arranging a reinforcing bar T to be buried in a concrete foundation. After that, it was constructed by placing concrete. That is, the locking portion 4a attached to the upper part of the partition plate 4 is to be locked to the upper part of the basic formwork 3/3 such as metal foam (metal formwork) to form the partition plate 4/4. The formwork is formed by arranging it at a position corresponding to both sides of the underfloor communication port, and horizontally mounting the wood 5 on the bottom part between the partition plates. The bottom wood 5 is covered with soil or the like to prevent it from floating after the concrete is set. After constructing the formwork in this way, concrete was poured, and after curing the formwork was removed to form the foundation and underfloor communication port.

[0004]

[Problems to be solved by the device]

 However, since the conventional formwork is U-shaped, concrete may not be able to go around underneath the wood 5 at the bottom, as shown in Fig. 9, resulting in the problem that the bottom forms an underfloor communication port. It will end up. Further, the formwork is composed of three members due to the structure of the removal, but after the concrete is cured, the three members must be removed one after another, which is a troublesome work.

[0005]

[Means for Solving the Problems] The present invention uses the following means in order to solve the above problems. That is, in order to form an underfloor communication port at the time of foundation construction of a building, in the underfloor communication port form 1 which is fitted and arranged inside the basic formwork 3, the lower part of the underfloor communication port form 1 is The corner cut portion 1a and the inclined portion 1b are provided on the side surface.

[0006]

[Action]

 Next, the operation will be described. That is, since the corner cut portion 1a is formed at the bottom of the underfloor communication port form 1, the cast concrete is filled up to the lower surface of the form bottom, and after concrete curing, the bottom surface is flat and the shape collapses. Configure a clean underfloor communication port without Further, the corner cut portion 1a also has a function of dispersing the pressure of the poured concrete to prevent the formwork from floating. Further, since the underfloor communication port form 1 has inclined portions 1b on both sides, the form can be easily removed by pulling out the form on the wide side between both sides after concrete curing.

[0007]

【Example】

 The problems to be solved and the means for solving the problems of the present invention are as described above. Next, the structure of the embodiments according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view showing a state in which the underfloor communication port form 1 of the present invention is placed on a foundation form 3 and concrete is poured, and FIG. 2 is an underfloor communication port form 1 on the foundation form 3. Fig. 3 is a front view of the underfloor communication port form 1, Fig. 4 is a plan view of the same, Fig. 5 is a side view of the same, and Fig. 6 shows a concrete foundation with an underfloor communication port after completion. It is a perspective view showing a state.

The underfloor communication port to be constructed by the underfloor communication port form 1 of the present invention is as shown in FIG. 6, and is constructed in the partition part of the concrete foundation of the building. As shown in FIG. 1, when arranging the reinforcing bars T to be embedded in the concrete foundation and then constructing the foundation form 3, the underfloor communication port form 1 is arranged by the method described below, and then the concrete is formed. It is constructed by placing and removing the formwork after curing.

The configuration of the underfloor communication port form 1 will be described with reference to FIGS. 1 to 5. Both side surfaces are inclined portions 1b, that is, the side surfaces of the underfloor communication port are formed so as to open to one side. With this structure, after the concrete is cured, it is possible to easily remove the formwork by pulling out the underfloor communication port formwork 1 in the direction in which the side surface is open. In addition, a corner cut portion 1a is formed in the lower part, and concrete is also filled in the lower side of the bottom of the formwork as shown in FIG. 1 when pouring concrete to form a clean underfloor communication port with a flat bottom. You can do it. The corner cut portion 1a also has a function of dispersing the pressure of the concrete that presses the formwork after it is placed, and prevents the formwork from floating and deforming the underfloor communication port after completion. .. In addition, a bottom hole 1c is opened in the bottom of the underfloor communication port form 1, so that it is possible to confirm whether concrete is filled up to the lower surface of the bottom of the form when pouring concrete. ..

As shown in FIGS. 1 and 2, the underfloor communication port form 1 is provided with a reinforcing bar T to be embedded in a concrete foundation, and then one side of the foundation form 3 is erected, and the underfloor communication port is formed. The locking parts 1d attached to the upper portions of both side surfaces of the working formwork 1 are locked to the upper part of the base formwork 3, and the other base formwork 3 is erected so as to sandwich the underfloor communication port formwork 1. It is installed by doing. Form bar 2 is laterally provided between both upper side surfaces of the underfloor communication port form 1, and the form bar 2 is arranged at the time of disposing the form or pulling out the form after concrete curing. The work can be done easily by holding. Further, the mold bar 2 also has a function of fixing both side surfaces of the underfloor communication port mold 1 so as not to be lifted up during concrete pouring.

[0011]

[Effect of the device]

 The present invention has the following effects by being configured as described above. That is, by forming the corner cut portion 1a at the bottom of the underfloor communication port form 1, the poured concrete is filled up to the lower surface of the form bottom, and after the concrete is cured, the bottom surface is flat and the You can configure a beautiful underfloor communication port. Further, the corner cut portion 1a also has a function of dispersing the pressure of the poured concrete to prevent the formwork from rising.

Further, since the underfloor communication port form 1 has inclined portions 1b on both sides, it can be easily removed by pulling out the form to a wide space between both sides after concrete curing. Can be done.

[Brief description of drawings]

FIG. 1 is a front view showing a state where an underfloor communication port form 1 of the present invention is placed on a base form 3 and concrete is poured.

FIG. 2 is a perspective view showing a state in which the underfloor communication port mold 1 is arranged on a base mold 3.

FIG. 3 is a front view of the underfloor communication port form 1.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of the same.

FIG. 6 is a perspective view showing a state after completion of a concrete foundation provided with an underfloor communication port.

FIG. 7 is a front view showing a state in which a conventional underfloor connecting mold is placed on a base mold.

FIG. 8 is a perspective view of the same.

FIG. 9 is a view showing a state where concrete is placed in the state shown in FIG.

[Explanation of symbols]

 1 Formwork for underfloor communication port 1a Corner cut part 1b Inclined part 2 Formwork bar 3 Basic formwork T Rebar

Claims (1)

[Scope of utility model registration request] 1. A lower part of the underfloor communication port form 1 in an underfloor communication port form 1 which is fitted and arranged inside a basic form 3 to form an underfloor communication port during the foundation construction of a building. A base formwork for an underfloor communication port, characterized in that a corner cut portion 1a is provided on the side and an inclined portion 1b is provided on the side surface.