JPS6122115Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a concrete separator end protruding from the surface of a poured concrete body such as a concrete wall. A process generally called sticoning, which is used to cut the inside of the concrete separator rather than the surface, and to hold the end of the concrete separator in place to form a space filled with mortar, etc. to prevent rust on the cut end surface. A member, more specifically, a front wall portion formed with a hole through which the flat plate portion of a concrete separator is formed, and has a flat plate portion at its end that can be inserted and locked between peripheral protrusions of adjacent formworks; The present invention relates to an improvement in a concrete separator end treatment member having a hollow conical wall portion surrounding the outside of a flat plate portion located closer to the formwork than the hole.

The most important thing about this type of member is that it can reliably prevent concrete slag from entering its hollow interior space when it is installed and in use.

Therefore, conventionally, holes are generally formed in the front wall portion to have a shape and cross-sectional area approximately equal to the flat end plate portion of the concrete separator over the entire length in the insertion direction of the end flat plate portion. However, in this case, the following problem occurred.

In other words, when the separator 8 is erected in a perpendicular position to the inner surface of the formwork 9, 9 as shown by the imaginary line in Figure 8(a), no problems arise. However, when it is erected at an angle as shown by the solid line (for example, when the formwork facing each other across the concrete pouring space are trapezoidal and not parallel to each other, or when the other end of the separator is fixed to an anchor embedded in the ground or in already poured concrete), it is necessary to bend the separator 8. However, this bending causes the end treatment member A' to be tilted away from the inner surface of the formwork 9, 9, which could allow concrete slag to enter through the gap. As a countermeasure, as shown by the solid line in FIG. 8B, it is possible to prevent the inclination of the end processing member A' by bending the separator 8 outside the end processing member A'. However, in this case, it is not preferable in terms of the stress transmission in the original formwork pulling or tensioning action of the separator 8, and moreover, when a large pulling or tensioning force (due to the load of poured concrete, etc.) is applied, the separator 8 may be bent as shown by the imaginary line.
The force acting on the end processing member A' through the hole 1A' will eventually cause the end processing member A' to tilt, allowing concrete slag to penetrate. Also, if the insertion hole 1A' in the end processing member A' is made sufficiently larger than the thickness of the separator end flat plate portion as shown in FIG. 8C in order to allow the concrete separator 8 to bend at the position inside the formwork 9, 9, the separator 8 can be bent inside the end processing member A' at the point where it is in close contact with the formwork 9, 9, but the hole 1A' will not be inserted.
Concrete sludge enters through large gaps formed between A' and the flat plate portion at the end of the separator, and this type of component is completely unable to perform the important functions described above.

Furthermore, the concrete separator can be erected in any inclined position relative to the formwork, and has a structure that prevents concrete slag from entering through the concrete separator insertion hole formed in the front wall even in any inclined position. As, Utsukai 54-
This was disclosed in Publication No. 150621 (particularly FIG. 4).

However, in what is disclosed in the above-mentioned publication, the hole formed in the front wall of the end treatment member may simply be larger than the wall thickness of the separator (diameter in the case of a round rod-shaped one), but the separator installation angle Regardless, it is necessary to attach a structure for closing the hole to the end side of the separator separately from the end treatment member, and as a separate part to the separator. In order to achieve this function, it was necessary to use a large number of parts, which not only increased costs, but also required a great deal of effort to assemble the formwork as a whole, which was not desirable in terms of efficiency.

In view of the above-mentioned circumstances, this invention is a concrete separator end treatment member that uses the minimum number of parts and can ensure the prevention of concrete slag penetration even when the concrete separator is installed in any inclined position. The purpose is to provide the following.

In order to achieve this object, the concrete separator end treatment member according to the present invention includes a hole formed in the front wall portion at an end closer to the outer surface of the front wall portion in the insertion direction of the flat plate. The portion is formed to have a thickness equal to or approximately equal to the thickness of the flat plate portion, and gradually becomes larger than the thickness of the flat plate portion as it approaches the inner surface end portion of the front wall portion. It is characterized by its structure.

First, embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows the set state of concrete separator end treatment member A, and 8 indicates adjacent formworks 9, 9.
This is a sheet metal separator whose end flat plate part 8a is inserted between the peripheral protrusions 9a, 9a and fixedly secured via a U clip 10. An end treatment member A is externally set in a portion closer to the concrete casting space than the formworks 9, 9.

The end treatment member A has a disk-shaped front wall portion 1 having a hole 1A through which the flat plate portion 8a can be inserted, and a hollow conical wall portion 2 integrally connected to the outer periphery of the front wall portion 1. It is integrally molded from synthetic resin (eg, styrene).

The insertion hole 1A is located at the end flat plate portion 8a of the concrete separator 8, as enlarged in FIG.
In the insertion direction, the end portion of the front wall 1 closer to the outer surface is formed to have a thickness equal to or approximately the same as the thickness of the flat plate 8a, and the thickness of the flat plate gradually increases as it approaches the inner end of the front wall 1. The opposing sides 1a, 1a are both formed as oblique sides so as to have a thickness greater than that of the portion 8a. The intersecting angle formed by both oblique sides 1a, 1a is approximately 45 degrees. Opposing sides 1a, 1
The facing distance of the outermost end of a is almost equal to the thickness of the flat parallel plate portion 8a, and the left and right width is the same as that of the flat plate portion 8a at that part.
It is almost equal to the left and right width of a.

Even if the flat plate portion 8a is bent inside the end treatment member A, the end treatment member A only moves in the vertical direction along the inner surfaces of the forms 9, 9, and the end surface of the conical wall portion 2 2a is held in close contact with the inner surface of the molds 9,9.

Therefore, concrete is reliably prevented from entering the inside of the end treatment member A.

The movement of the end treatment member A in the direction away from the formworks 9, 9 is achieved by moving the end treatment member A away from the formworks 9, 9 by applying a front step to the step portions 8b, 8b provided outwardly on both left and right sides of the flat plate portion 8a, as shown in FIG. This is prevented by the wall portion 1 coming into contact with it.

The end processing member A is divided into two parts by a plane perpendicular to the longitudinal direction of the insertion hole 1A as shown in Figs. 4 to 6. That is, these two divided bodies a, a have respective dividing holes 3
The divided body a has a semicircular front wall 3, 3 having a diameter of 3a, a semiconical peripheral wall 4, 4, and a pair of inner walls 5, 5... corresponding to the diameter portion. In one divided body a, a locking hole 6, 6 is formed at the connecting corner of the peripheral wall 4 and the inner wall 5, 5, and in the corresponding portion of the other divided body a, a protruding claw 7, 7 is provided which can elastically engage with the locking hole 6, 6.
Even in the case of
is an oblique side extending from the opposing sides 1a, 1a of the insertion hole 1A.

The reason why the end treatment member A is composed of the divided bodies a and a is that the flat plate part 8a has a cylindrical part 8c formed by burring. It can be inserted from the end, so there is no need to separate it.

The end treatment member A of the present invention is used when the formwork 9 is tilted as shown in FIG. In other words, it is suitable when the separator 8 is erected in an inclined position with respect to the vertical line to the inner surface of the adjacent formworks 9, such as when the opposing formworks 9... group have a trapezoidal shape as shown in FIG. 7B. However, it goes without saying that it can also be used when installed in a vertical position.

As is already clear from what has been detailed above,
According to the present invention, when constructing the concrete separator 8 in an inclined position with respect to the inner surface of the formwork 9, the concrete separator 8 is bent at the most preferable position for stress transmission, that is, at a position close to the inner surface of the formworks 9, 9. While maintaining the desired tilted posture, the end treatment member is surely prevented from tilting, and the opening side end face of the hollow conical wall is held in close contact with the inner surface of the formworks 9, 9, allowing concrete slag to enter between the two. The occurrence of such gaps can be reliably prevented. Moreover, regardless of the erection posture of the concrete separator 8, the flat plate portion 8a at the end of the concrete separator 8 inserted through the hole 1A formed in the front wall portion 1 and the hole 1A formed in the front wall portion 1
It is possible to reliably avoid creating a gap between the two.

As mentioned above, by making very simple improvements such as devising the shape of the hole 1A formed in the front wall portion 1,
Preventing the intrusion of concrete slag without using special separate parts as seen in the above-mentioned publications.
It has now become possible to economically and efficiently form the processing space with reliability and accuracy.

[Brief explanation of the drawing]

The drawings show an embodiment of the concrete separator end treatment member according to the present invention, and FIG. 1 is a vertical side view showing the set state, FIG. 2 is an enlarged sectional view of the main part, FIG. 3 is a cross-sectional plan view, and FIG. Figures 5 and 6 show the separated state, Figure 4 is a sectional view, Figure 5 is a side view, Figure 6 is a plan view, and Figures 7A and 6 are side views showing preferred construction examples. It is a diagram. Incidentally, FIG. 8 A, B, and C are cross-sectional views pointing out problems. 1...Front wall part, 2...Hollow conical wall part, 1A...
Insertion hole, 8...Separator, 9...Formwork, 8a...
...Squamous plate part.

Claims (1)

[Claims for Utility Model Registration] The flat plate portion 8a of the concrete separator 8 has at its end a flat plate portion 8a that can be inserted and locked between the peripheral protrusions 9a, 9a of adjacent formworks 9, 9.
A front wall part 1 having a hole 1A through which it can be inserted, and a hollow conical wall part 2 surrounding the outside of the flat plate part 8a located closer to the formworks 9, 9 than the hole 1A.
A concrete separator end treatment member having a hole 1A formed in the front wall portion 1,
In the insertion direction of the flat plate portion 8a, an end portion closer to the outer surface of the front wall portion 1 is formed to have a thickness equal to or approximately equal to the thickness of the flat plate portion 8a, and is close to an inner end portion of the front wall portion 1. A concrete separator end treatment member characterized in that the thickness of the concrete separator end portion is gradually larger than that of the flat plate portion 8a. The concrete separator end treatment member according to claim 1, wherein the front wall portion 1 and the hollow conical wall portion 2 are integrally molded from a hard synthetic resin.