JPS639736Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides an internal space of a hollow shell having a hemispherical or almost hemispherical peripheral wall surface and an opening periphery that can be brought into close contact with the inner surface of the formwork, which corresponds to the spherical center of the peripheral wall surface. position,
A female screw member for connecting a concrete separator is pivotally held in a state in which it can swing freely around at least one axis, and a plate member for attaching to the formwork is attached to the female thread member in a state in which it can swing around the axis. End treatment of a concrete separator, which is arranged in series and has a hole formed in a peripheral wall surface of the hollow shell body at a location corresponding to the female threaded hole of the female threaded member to allow the swinging of the female threaded member and the concrete separator. Regarding parts.

This type of concrete separator end treatment member is designed to attach the mounting plate member of the separator end to the formwork, which protrudes outward from the surface of the poured concrete body in the demolded state, from the surface of the concrete body. cut out internally, and
It is used to form a recess so that the cut end surface can be completely covered with a rust preventive material such as mortar that is filled later. Of course, it can be used particularly effectively in forming objects where one side is inclined relative to the other. Therefore, this type of end treatment member is designed to reliably form the above-mentioned recess and to allow smooth extraction of the end treatment member from the concrete frame surface after demolding. Therefore, it is required to reliably prevent concrete from entering the hollow shell of the end treatment member.

In order to meet such demands, conventionally, as shown in FIG. 7, in addition to the above-mentioned configuration, the inner surface of the hole 01a that allows the internal thread portion 02 and the concrete separator 03 to swing, Regardless of the attitude of the concrete separator 03, an elastic seal part 012 formed from a lip-shaped thin film head material is provided which comes into elastic contact with the outer circumferential surface of the end of the concrete separator 03 to prevent the intrusion of poured concrete. The structure was designed to always provide a constant sealing performance even when the opposing sides of the building frame are not parallel.

It is true that in this case, the sealing performance can be improved compared to the case where the hole that allows the female thread member and the concrete separator to swing is simply opened in the shape of a long hole, but the lip-shaped elastic seal portion Since the shell is made of a thin film member, the larger it becomes, the more concrete may flow into the internal space of the shell without being able to fully resist the lateral pressure of the poured concrete, which may cause the concrete separator to swing. The range of use of this type of member was limited because it could not be used in a very large range.

In view of the above circumstances, an object of the present invention is to provide a concrete separator that can reliably prevent concrete from flowing into the shell while sufficiently widening the swinging range of the concrete separator. The characteristic configuration of the concrete separator end treatment member according to the present invention, which has been made to achieve the above object, is that the inner surface of the peripheral wall surface of the hollow shell is provided with the internal thread member and the concrete separator over the entire swing range. The point is that a movable plate is held that can keep the hole closed.

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

That is, in the peripheral wall surface of the hollow shell, a hole that allows the female screw member and the concrete separator to swing is provided as a long hole or a circular hole that is considerably larger than the end diameter of the separator. In order to fill the gap between the separator end member and the separator end member, instead of using a conventional elastic seal, the movable plate that can slide along the circumferential wall surface is provided. Since the hole formed in the shell body is always kept closed over the entire swing range while swinging with the swing of the concrete separator, no matter what opposing posture the two opposing sides of the concrete frame may take. Also, with the entire surface of the peripheral wall in contact with the formwork, it has become possible to reliably prevent concrete from entering the internal space.

Hereinafter, embodiments of the configuration of the present invention will be described based on the drawings.

Fig. 1 shows the construction state of the concrete separator end treatment member A, and 3 is a separator formed in the shape of a round bar, with its end having a male thread for threading to thread into a female thread member 2 to be described later. The end treatment member A, which is screwed into the female screw member 2 and connected to both ends of the separator 3 which is spanned between the opposing formworks 6, is located on the concrete casting space side with respect to the formwork 6. It is abutted and locked.

The configuration of the end treatment member A will be described in detail based on FIGS. 2 to 4. The hemispherical or nearly hemispherical hard synthetic resin (styrene) peripheral wall surface 1A is in close contact with the inner surface of the formwork 6. A round bar-shaped concrete separator is connected to a position corresponding to the spherical center of the peripheral wall surface portion 1A in the inner space 1C of the hollow shell 1 having an opening periphery 1B that can be used, in an axial manner that can freely swing around the horizontal axis a. The internal threaded member 2 is fixed to the inner wall of the peripheral wall surface portion 1A and is pivotally supported by support plate-like members 11, 11 which protrude toward the internal space 1C and toward the other side, respectively, and The female thread member 2
A mounting plate member 5 is connected via rivets 10, 10 so as to be able to swing around the axis a. The mounting plate member 5 has a locking hole 8 on the side opposite to the end connected to the female threaded member 2, which is held and fixed with a U clip 7 while being sandwiched between the adjacent formworks 6, 6. has.

A long hole 1a for allowing the female threaded member 2 and the concrete separator 3 to swing is formed at a location corresponding to the female threaded hole 2a of the female threaded member 2 on the peripheral wall surface 1A of the hollow shell 1, and the hollow shell 1 On the inner surface of the peripheral wall surface portion 1A, on both sides of the elongated hole 1a, L-shaped cross-sectional members 9, 9 for slidably holding a movable plate 4, which will be described later, are arranged symmetrically. The movable plate 4 is slidably held by the L-shaped members 9, 9 by tightly inserting the round bar-shaped end of the concrete separator 3 to prevent concrete from entering. The long hole 1a is kept closed over the entire swing range of the female screw member 2 and the concrete separator 3.

FIG. 5 shows another embodiment. The difference from the above embodiment is that the mounting plate member 5 is composed of two parts, a flat plate part 5b and a cylindrical part 5a, and both 5a and 5b are fixedly connected with a rivet 10, and the cylindrical part 5a is fixed to the inner surface of the peripheral wall surface portion 1A. The cylindrical portion 5a engages and holds the female screw member 2, which is formed in a substantially spherical shape, in the grooves 2b, which are formed in a spherical shape. The spherical female screw member 2 is configured to be swingable around the axis a.

FIG. 6 is the same as that shown in FIG.
The female screw member 2 is pivotally supported by a spherical seat formed on the inner surface of the cylindrical portion 5a, and the female screw member 2 is configured to be swingable without being constrained to a specific axis. Further, the movable plate 4 is formed in a spherical shape,
It is fixed to the cylindrical portion 2c extending from the female threaded member 2.

Although not shown in the figure, the separator 3 may be composed of a single part having a round bar shape as a whole or a flat plate-shaped middle part and round bar-shaped ends, or the middle part can be made of a flat plate material, an angle material, or It may be a member having a T-shaped cross section, and may be composed of two parts with both end portions being round bar-shaped members, and both may each have a plurality of engagement holes for length adjustment.

[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 construction state, FIG. 2 is an overall rear view, FIG. 3 is an overall front view, and FIG. 4 is an overall front view. FIGS. 5 and 6 are overall longitudinal side views, respectively, and FIG. 7 is a longitudinal side view of a conventional example in a construction state. 1...Hollow shell body, 1A...Peripheral wall surface part, 1B...
...opening periphery, 1C...inner space, 1a...hole, 2
...Female thread member, 2a...Female thread hole, 3...Concrete separator, 4...Movable plate, 5...Mounting plate member, 6...Formwork, a...Axis core.

Claims (1)

[Scope of utility model registration request] Hemispherical or nearly hemispherical peripheral wall portion 1A and formwork 6
In the internal space 1C of the hollow shell 1 having the opening periphery 1B that can be brought into close contact with the inner surface, concrete is placed at a position corresponding to the spherical center of the peripheral wall surface 1A in a state that it can swing freely around at least one axis a. A female screw member 2 for connecting a separator is pivotally supported, and a plate member 5 for attaching to the formwork 6 is connected to the female screw member 2 so as to be swingable around the axis a, and A concrete separator end treatment member in which a hole 1a for allowing the female threaded member 2 and the concrete separator 3 to swing is formed at a location corresponding to the female threaded hole 2a of the female threaded member 2 on the peripheral wall surface portion 1A of the body 1, The hole 1a is formed on the inner surface of the peripheral wall surface 1A of the hollow shell 1 over the entire swing range of the female screw member 2 and the concrete separator 3.
A concrete separator end treatment member that holds a movable plate 4 that can maintain a closed state.