JPS6311251Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a concrete formwork in which a circumferential side plate for superposition is fixedly connected to the outer edge of a hexagonal top plate over its entire length.

Conventionally, rod separators have been used to tractionally support an assembled formwork formed by stacking a plurality of hexagonal formworks. This is shown in Figures 1 and 2. 31 is a top plate, 32 is a circumferential side plate for superposition, and 33 is a recess formed at each vertex of the circumferential side plate 32. 34 is a rod separator, 35 is a collar, 36 is a screw, 37
is a Y-shaped fitting body, and 38 is a nut. Figure 2 is 3
The butt part of two formworks is shown. Three recesses 33 come together to form one hole 39. There are three sets of overlapping circumferential side plates 32, 32 in a Y shape. The fitting body 37 is fitted into them. The screw 36 of the separator 34 is passed through the hole 39 and the center hole 40 of the fitting body 37, and the nut 38 is screwed into the screw 36 for fastening.
This conventional means has the following problems.

As an initial condition for separator installation,
The polymerization of three formworks is required. For this reason, workability is poor. In particular, fitting the fitting body 37 is time-consuming.

Forming the recess 33 at the apex of the circumferential plate 32 is difficult in terms of manufacturing and tends to result in a decrease in strength.

The purpose of the present invention is to solve the above problem.

Measures taken by this invention for this purpose (Summary structure)
is a recess for separator fitting that is parallel to the surface of the peripheral side plate 2 and extends across the entire width of the peripheral side plate 2 at a location other than the end of at least two of the six sides of the outer edge of the top plate. 3 is formed, and an insertion hole 4 for a separator fixing clip is formed at the recess 3.

In other words, it can be said that the initial conditions for attaching the separator have been relaxed from the conventional three-frame polymerization to two-frame polymerization. This does not mean that it has simply become 2/3. Assuming there are 3 formworks A, B, and C, there are 3 formworks: A, B connection, B, C connection, and C, A connection.
There is a bond. In addition, we must also consider the overall combination of A, B, and C. On the other hand, when there are two formworks X and Y, only one X and Y connection is required. In other words, to use an analogy, it has been relaxed to 1/3 or 1/4.

Further, it is much easier to form the recess at the middle portion of the circumferential plate than at the apex of the circumferential plate. Deterioration in strength can also be suppressed.

Thus, the effects of the present invention can be said to be as follows.

(b) It is effective in improving the workability of separator installation.

(b) Easier formwork production, and at the same time, reduce strength loss due to recesses.

(C) Since the recess 3 extends across the entire width of the circumferential plate 2 and is parallel to the surface of the circumferential plate 2, the recess 3 can be formed extremely easily and can be formed into a uniform shape. .

(d) Since the insertion hole 4 for the separator fixing clip is formed in the recess 3, the separator can be fixed and the circumferential side plate 2 connected and fixed at the same time, making assembly of the formwork extremely efficient. I can do it.

(e) No other means are required for fixing the separator.

Next, embodiments of the present invention will be described.

[First Embodiment] See FIGS. 3 and 4. Reference numeral 1 designates a regular hexagonal top plate, 2 a circumferential side plate for overlapping, and 3 a recess for fitting a separator.

Both the top plate 1 and the peripheral side plate 2 are made of metal (iron). The circumferential plate 2 consists of six pieces, and each piece is attached to the top plate 1.
It is a whole series. In other words, each piece is relative to the top plate 1.
It is bent 90 degrees.

Adjacent pieces are welded together.

Two recesses 3 are formed on each of the six sides (pieces) of the peripheral side plate 2.

Each recess 3 is press-formed, and the peripheral side plate 2
The wall thickness is the same at the recess 3 and at other locations. In the circumferential plate 2, at the recess 3,
As shown in FIGS. 5 and 6, holes 4 are formed through which clips 30 for fixing the separator 20 are inserted.

Each recess 3 is in the form of a through groove extending over the entire width of the peripheral side plate 2. The separator 20 is a so-called "flat separator", and the ear portion 22 has a clip insertion hole 21 formed therein.
has an elongated rectangular cross section. In accordance with this, the bottom surface of the recess 3 is parallel to the surface of the peripheral side plate 2. The depth of the recess 3 is one-half the thickness of the ear portion 22 of the separator 20.

The distances between each recess 3 and the vertex of the peripheral side plate 2 closest to it are all equal.

[Other Examples] The top plate 1 may have a hexagonal shape other than a regular hexagonal shape.

The top plate 1 and the peripheral side plate 2 were originally separate pieces, but they were welded together.

The entire product shall be made of synthetic resin.

The shape of the recess 3 is one in which the thickness of the circumferential plate 2 is cut into a shape as shown in FIG.

Various numbers and arrangement relationships of the recesses 3 can be considered. Here are a few examples. Figures 8 to 1
See figure 0. It is not necessary to have the recesses 3 on all sides of the peripheral side plate. The reason is as follows. If we take "where there is a clip, there is a separator" as an axiom, then
Requires recesses on all sides. However, this axiom is not a necessary condition. This is because connecting formwork with clips and pulling assembled formwork with separators are two different things. For this reason, images such as those shown in FIGS. 9 and 10 are also permissible. However, as described above, clips are used on all six sides. However, the above axioms can be regarded as general principles.

The depth of the recess 3 does not necessarily have to be 1/2 the thickness of the separator ear.

The formwork shown in FIG. 11 has a recess 3 having the same depth as the wall thickness of the ear. In one formwork, they are formed on every side of the peripheral frame 2.
If the stacking posture is appropriate, separators can be attached to all six sides of all formworks.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional traction means, and FIG. 2 is a perspective view of a conventional traction means. Figures 3 and 4
The figures are a rear view and a side view showing the first embodiment, FIG.
FIG. 6 is a partially cutaway perspective view and a sectional view showing the state of use. 7 to 11 show different embodiments, in which FIG. 7 is a sectional view, FIGS. 8, 9, and 10 are a front view, and FIG. 11 is a front view in an assembled state. 1...Top plate, 2...Surrounding side plate for superposition, 3...Recess, 4...Clip insertion hole.

Claims (1)

[Utility Model Claims] A hexagonal top plate 1 has an overlapping peripheral plate 2 fixedly attached along its entire length to the outer edge thereof, and at least two of the six sides of the peripheral plate 2 are provided with a joint other than the ends.
A hexagonal concrete formwork in which a separator fitting recess 3 is formed parallel to the surface of the peripheral side plate 2 over the entire width of the formwork in the width direction, and an insertion hole 4 for a separator fixing clip is formed at the recess 3. A hexagonal concrete formwork as set forth in claim 1, in which the peripheral side plate 2 has a thickness equal to that at the recess 3 and at other places. A hexagonal concrete formwork as set forth in claim 1, in which the recess 3 has a depth which is half the thickness of the separator to be used. A hexagonal concrete formwork as set forth in claim 1, in which the top plate 1 and the peripheral side plate 2 are made of metal. A hexagonal concrete formwork as set forth in claim 1, in which the top plate 1 is a regular hexagon. A hexagonal concrete formwork as set forth in claim 1, in which the recess 3 is formed on all six sides of the peripheral side plate 2. A hexagonal concrete formwork as described in the claims of the utility model registration, in which the recesses 3 are formed in pairs on each of the six sides of the peripheral side plate 2.