JPS6220590Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a receiving piece of a formwork separator.

Conventionally, as shown in FIG. 5, there is a type of separator receiving piece for formwork in which a hole E is bored in the top surface of a bowl-shaped receiving piece main body D made of iron to be engaged with a stopper of the separator.

However, when an axial load is applied when the formwork is tightened, the stopper S of the separator A bends and deforms the periphery of the hole E, making it impossible to maintain the proper spacing between the formworks.

Therefore, in order to prevent this, it is necessary to increase the thickness of the receiving piece main body D, which increases the cost.

In addition, to solve this problem, as shown in Figure 6, the top surface of the iron bowl-shaped receiver body D' is burred inward to form a hole E' that engages with the stopper of the separator. There is a type that prevents deformation due to the axial load when tightening the formwork.

However, when breaking off the tip of the separator after concrete pouring, curing, and demolding, a pipe-shaped breaking tool, for example, is inserted into the tip of the separator and is swung up and down.
However, at this time, the point of force application comes into contact with the inner tip G of the hole E', and it is easy to break from this point, and the bowl-shaped receiver body D' remains in the concrete frame, making it difficult to remove and causing rust. There are still problems with post-processing.

This idea was created in view of the various problems that existed in the past, and it not only has superior rigidity against the axial force when tightening the formwork, but also makes it possible to securely break off the separator from the notch when breaking it off. An object of the present invention is to provide a separator receiving piece for formwork that is easy to post-process without leaving the receiving piece main body in a concrete frame.

The structure of the receiving piece of the formwork separator of this invention will be explained below based on the drawings of the embodiment.

FIG. 1 is a central vertical cross-sectional view showing a first embodiment of a receiving piece of a formwork separator of this invention.

FIG. 2 is a central vertical sectional view of the main part showing the state in which it is used.

Reference numeral 1 denotes a metal bowl-shaped receiving piece main body, 2 indicates a hole that is engaged with a stopper of a separator that projects outwardly from the top surface of the bowl-shaped receiving piece main body 1, and 3 refers to a bowl-shaped receiving piece main body 1. This is a flange installed around the end of the formwork.

To use the formwork separator receiver piece of the first embodiment, as shown in Fig. 2, after gluing it to separator A, insert the male screw end of separator A into the through hole B from the inside of formwork F. T is inserted, the flange part 3 of the bowl-shaped receiver body 1 is brought into contact with the inside of the formwork F, and the formwork tightening rod C is screwed into the male threaded part T at the tip of the separator A from the outside of the formwork F. Assemble the frame.

For the axial load when tightening the formwork, hole 2
This can be achieved by protruding outward from the top surface of the bowl-shaped receiver body 1 in a centripetal manner to increase rigidity.

When bearing an even larger compressive load, the inner peripheral edge 2a of the tip of the hole 2 deforms slightly inward, contacts the outer periphery of the separator, and is prevented from further deformation by the separator, increasing the rigidity against axial force. can win.

In addition, when breaking off the tip of the separator, the point of application of force is at the point where it contacts the inner peripheral edge 2a of the tip of the hole 2 of the bowl-shaped receiving piece body 1, that is, the notch N of the separator A.
Since stress concentration occurs at the notch N, the bowl-shaped receiving piece body 1 can be reliably broken off from the notch N, and the bowl-shaped receiving piece body 1 can be easily extracted from the concrete frame.

Rust formation, water leakage, etc. can be prevented by filling and repairing the holes in the bowl-shaped receiver body 1 with mortar or the like.

As described in detail above, the formwork separator receiving piece according to the first embodiment of this invention has excellent rigidity against compressive force when the formwork is tightened, and does not require thick material. It can be provided at low cost.

Furthermore, when breaking off the separator, it can be broken off securely from the notch, and the bowl-shaped receiving piece main body can be easily extracted from the concrete frame, making post-processing easy.

Next, another embodiment of the formwork separator receiving piece of this invention will be described with reference to the drawings.

FIG. 3 is a central vertical sectional view showing the second embodiment.

This is because, in the receiving piece of the formwork separator of the first embodiment, the hole 12 that is engaged with the stopper of the separator is projected outward from the top surface of the bowl-shaped receiving piece main body 1 in a centripetal manner and in an arcuate shape. The first
It has the same effect as the receiving piece of the embodiment.

FIG. 4 is a central vertical sectional view showing the third embodiment, in which a hole 22 is provided centripetally outward from the top surface of the bowl-shaped receiver body 1 and protrudes inwardly in an arc shape. It has the same effect as the receiving piece of the first embodiment.

As detailed above, the formwork separator receiving piece of this invention has excellent rigidity against compressive force when tightening the formwork, and can shift the point of application of force when breaking off the separator. It is possible to break off the receiving piece from the notch without any problem, and the receiving piece main body can be easily extracted from the concrete frame, and post-processing is easy, which is useful in practice.

[Brief explanation of drawings]

FIG. 1 is a central vertical sectional view of a receiving piece showing the first embodiment of the formwork separator of this invention, and FIG.
FIG. 3 is a central vertical cross-sectional view of the main part showing the state of use of the separator for formwork of this invention.
The central vertical sectional view showing the embodiment, FIG.
The central vertical sectional view, FIGS. 5 and 6, showing the embodiment,
It is a longitudinal cross-sectional view of the principal part showing the state of use of the conventional one. DESCRIPTION OF SYMBOLS 1... Bowl-shaped receiving piece main body, 2... Hole that engages with the stopper of the separator, 3... Flange, A... Separator, S... Stopper of the separator,
N...Separator notch, T...Separator tip male thread, F...Formwork, B...Formwork through hole, C...Formwork tightening rod.

Claims (1)

[Scope of utility model registration request] A receiving piece for a separator for formwork, characterized in that a hole protruding from the top surface of the metal bowl-shaped receiving piece body is outwardly directed centripetally and engages with the separator.