JPS6315491Y2 - - Google Patents

Description

[Detailed description of the invention] For example, when producing a side wall for a side gutter or the like by pouring concrete, the present invention can be inserted between the overlapping ends of adjacent formwork and attached to the formwork via a U clip or the like. A concrete separator configured to tow and support opposing formwork against each other against the lateral pressure of poured concrete by locking and fixing, and to cut and remove the portion that protrudes outward from the concrete surface after removing the formwork. Regarding.

In this type of concrete separator, the plate-shaped part located on the other end side of the locking part inserted between adjacent formworks, and the part that protrudes outward from the poured concrete surface, is manually cut and removed using a general-purpose tool. As a measure to make this process easier, it has been known to form one or two straight perforations across the width of the separator on the plate-shaped part to be removed. For example, although the perforation can be easily removed using a general-purpose tool such as scissors or pliers, or by hand in some cases, without requiring a large-scale cutting jig such as gas cutting, or any construction work, Since the separator is formed in a straight line along the width direction, if the separator is used diagonally across the opposite direction between the opposing formworks, the perforations will be formed against the outside surface of the formwork. If they are not parallel and are cut along the perforations after demolding, a portion will remain protruding and may become an obstacle during surface finishing.
There were drawbacks such as rust on the protruding edges and an unsightly finished surface.

In view of the above circumstances, the present invention enables the separator to be widely used between opposing formworks without being subject to restrictions on its orientation, and also ensures that the protruding ends can be easily removed after concrete is poured. The purpose is to provide products that can be done with good finish.

The concrete separator according to the present invention, which has been made to achieve the above object, has a flat plate-shaped locking part on one end side that is inserted between the overlapped ends of adjacent concrete formworks and is removably locked and fixed. , over a certain range in the length direction of at least one surface of the plate-shaped portion located on the other end side of the locking portion,
It has a configuration in which groups of cutting lines in at least two directions that intersect with each other are formed at close intervals.

The effects of the present invention having such a characteristic configuration are as follows.

In other words, when cutting out and removing a plate-shaped part that protrudes outward from the concrete surface after concrete form work, a line located parallel to the concrete surface or a plurality of line intersections among the group of cut lines. By applying a shearing force to the line connecting the concrete surface, the protruding portion can be reliably and easily removed at a position along the concrete surface with little effort.
Therefore, there is no unsightly appearance such as a part remaining in a protruding state, and there is no need to cut the remaining part again with a cutting tool, thereby allowing efficient post-processing as a whole. Moreover, as mentioned above, the cutting line of the protruding part can be set at any angle with respect to the longitudinal direction of the separator, so there are no restrictions on the orientation of the separator in the installation direction with respect to the formwork.
The separator can be used in a wide variety of ways, regardless of the spacing or relative posture of the opposing formwork.

Embodiments of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is a separator in the form of a narrow band as a whole, and can be inserted and removed between the overlapping ends Sa, Sa of the adjacent concrete forms S, S on one end side of a metal flat material such as steel. As an example of a locking part that is locked and fixed, the plate-like part 1a has a circular pin hole 2 and extends over a certain range in the length direction of the plate-like part 1a located on the other end side from the pin hole 2. A group of cut lines 3 for cutting in two directions, which are parallel to the side edges of 1a and intersect with each other at right angles, are formed at close intervals in both the vertical and horizontal directions.

Such a concrete separator 1 is spanned between opposing formworks S and S as shown in FIG. Insertion holes Sb and Sb, which are formed in the front pin hole 2 and the adjacent formwork S, and the overlapping end Sa of S, and Sa,
Through a U-clip-shaped pin 4 passed through Sb, the overlapping ends Sa and Sa are interposed and fixed. In this state, concrete is poured between the opposing formworks S, S, and after curing, the plate-shaped portion 1a protruding from the concrete outer surface is removed. Whether it is in the state shown in FIG. 2 with a certain inclination or in the parallel state shown in FIG. This process is performed by cutting along the lines so that there are no remaining parts that protrude outward.

Other examples will be listed below.

The one shown in FIG. 6 is a modification of the separator 1, which is composed of two joint members 1A having the locking portions 2 and a bar member 1B. The above-mentioned cut line group 3 is formed over a certain range in the length direction of the plate-like portion 1a located on the other end side of the stop portion 2, and the cross-sectional shape is approximately U-shaped on the other end side. It is shaped like a letter, and both sides of the upper end of the opening are stretched in the horizontal direction, and has a locking connection part 1C with the bar member 1B.

As represented by the three types shown in the figure, the bar member 1B has a structure in which a flat plate-like part, an angle member, a rod-like member, etc. can be selected depending on the required strength, and the above-mentioned joint A plurality of holes 1d formed in the locking connection portion 1C of the member 1A and a plurality of holes 1e formed in the bar member 1B.
The overall length can be adjusted according to the width dimension of the opposing formworks S, S, and can be fixed to any desired length using pins 5.

The separator 1 shown in FIGS. 7 and 8 is also a modified example of the separator 1, which is divided into two parts at the middle part in the longitudinal direction. It is formed into a substantially T-shape stretched in the left and right horizontal directions, and both 1' and 1' are slidably fitted in the longitudinal direction, so that the length can be adjusted freely via the pin 5. It is something.

In the case shown in FIG. 9, the above-mentioned score line group 3 is formed in two directions intersecting with each other in a bias shape with respect to the longitudinal direction of the separator.

In the case shown in FIG. 10, the above-mentioned score line group 3 is formed on both the front and back surfaces of the plate-shaped portion 1a.

Although not shown in the drawings, the cut line groups 3 may be formed in two directions parallel to and at right angles to the side edges of the plate-shaped portion 1a and intersecting each other, and in two directions intersecting each other in a bias shape.

The cut line group 3 is most preferably V-shaped in cross-section, but may also be I-shaped.

[Brief explanation of the drawing]

The drawings show an example of the concrete separator according to the present invention, with Fig. 1 being an overall perspective view, Figs. 2 and 3 being plan views showing the construction state, and Fig. 4 showing the concrete separator being locked and fixed between adjacent formworks. Fig. 5 is a plan view of Fig. 4, Fig. 6 is an enlarged longitudinal cross-sectional view of main parts showing the
Figures 10 to 10 show another embodiment, Figure 6 is an exploded perspective view, Figure 7 is an overall plan view, Figure 8 is a sectional view taken along the - line in Figure 7, and Figure 9 is an enlarged plan view of the main parts. 10 are enlarged longitudinal sectional views of main parts. S... Adjacent concrete formwork, Sa... Overlapping end, 1a... Plate-shaped portion, 2... Locking portion, 3... Cut line group.

Claims (1)

[Scope of Claim for Utility Model Registration] It has a flat plate-shaped locking part 2 on one end side which is inserted between the overlapping ends Sa and Sa of the adjacent concrete formworks S and S and is removably locked and fixed;
A plate-shaped portion 1 located on the other end side of this locking portion 2
A concrete separator in which cutout line groups 3 in at least two directions intersecting each other are formed at close intervals over a certain range in the length direction of at least one surface of the concrete separator. The concrete separator according to claim 1, wherein the cut line group 3 is formed in a biased manner with respect to the longitudinal direction of the separator.