JPS6344485Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connecting anchor in a PC stone slab, which is embedded in the side of the PC stone slab to connect the stone slab and a concrete slab.

Used to decorate the exterior walls of buildings
PC stone slabs are made by connecting stone slabs and concrete slabs together using connecting anchors.
The central part of the PC stone slab is firmly connected together with a connecting anchor, and the both sides are connected using connecting anchors 11 made of steel wire or the like bent into a square shape, as shown in Fig. 5. Was. That is, the groove insertion portion 11a of the connecting anchor 11 is inserted into the side surface of the stone plate S.
At the same time, the hole insertion part 11b is inserted into the hole 13 bored at the formed end of the groove insertion part 11a, and the buried part 11c is buried in the concrete plate K. and concrete plate K
The sides were connected.

However, the above-mentioned connecting anchor 11 has its hole insertion portion 11b simply inserted into the hole 13 drilled in the side surface of the stone plate S, and is not fixed to the stone slope S. There were drawbacks such as the possibility that the connecting anchor 11 would move when pouring concrete, and the strength of the connection between the stone slab S and the concrete slab K was low.

The connecting anchor according to the present invention was created in view of the above problems, and its gist is that the connecting anchor is attached to the side of the stone slab by bending a wire such as a steel wire into a square shape. This method uses the restoring force caused by the elastic deformation of the concrete plate to fix it, and increases the connection strength by increasing the contact area with the concrete within the concrete plate.Examples will be explained in detail below with reference to the attached drawings. .

The connecting anchor 1 shown in FIG. 1 is made of a wire rod such as a steel wire, and has a linear groove insertion portion 1a.
One end is bent at a substantially right angle to form a hole insertion portion 1b, and the other end of the groove insertion portion 1a is bent at a substantially right angle.
It is bent at an almost right angle in the same direction as b, and
The center part is largely curved inward to form a nearly square-shaped elastic contact portion 1c, and the overall shape is approximately square.

On the other hand, as shown in FIG.
In Sa, several grooves 2 are formed horizontally at regular intervals, and a hole 3 is formed on the side of the formed end of the groove 2.
It is perforated perpendicularly to Sa.

As shown in FIG. 2, the groove insertion part 1a and the hole insertion part 1 of the connecting anchor 1 are inserted into the groove 2 and hole 3 provided in the side surface Sa of the stone plate S, respectively.
b and at the same time, when the tip of the elastic contact part 1c is brought into elastic contact with the back surface Sb of the stone plate S, the elastic contact part 1c is elastically deformed and its restoring force causes the connecting anchor 1 to come into contact with the side of the stone plate S. Fixed. Next, a stone plate S is installed on the bottom 4a of the formwork 4 with the back side Sb facing upward,
Another connecting anchor (not shown) is fixed to the center of the back surface Sb of the stone slab S, and appropriate reinforcement is placed.Concrete is poured into the formwork 4, and after curing and hardening, the formwork 4 is When removed, the back side of the stone plate S
A PC stone plate is manufactured in which a concrete plate K is integrally connected to Sb via another connecting anchor (not shown) and the connecting anchor 1. Here, since the connecting anchor 1 is fixed to the side of the stone slab S by the restoring force due to elastic deformation, it does not move during concrete pouring.

Further, FIGS. 3 and 4 show connecting anchors 1', 1'' of other embodiments, and the connecting anchor 1' has a linear groove insertion portion 1'a with one end at a substantially right angle. The other end of the groove insertion part 1'a is bent at an acute angle in the same direction as the groove insertion part 1'b, and the center part is largely curved inward to form an almost ⊃-shaped elastic contact part 1'
It has a configuration as shown in c. On the other hand, in the connecting anchor 1'', one end of the linear groove insertion portion 1''a is bent at a substantially right angle to form a hole insertion portion 1''b, and the other end of the groove insertion portion 1''a is bent at a substantially right angle. It is bent at an obtuse angle in the same direction as the hole insertion part 1''b, and its central part is largely curved inward to form a substantially square-shaped elastic contact part 1''c. In any of the embodiments, similarly to the connection anchor 1 of the previous embodiment, it is fixed to the side of the stone plate S by the restoring force caused by the elastic deformation of the elastic contact parts 1'c, 1''c.

In this way, the connecting anchor according to the present invention is
Since it is fixed to the side of the stone slab by the restoring force caused by the elastic deformation of the elastic contact part of the anchor, the connecting anchor will not move when pouring concrete on the back of the stone slab, and it will not move outside the building. When installed on a wall, a large number of connecting anchors fixed to the side of the stone slab will effectively compensate for the strain difference between the stone slab and the concrete slab due to vibration or temperature changes due to the restoring force caused by elastic deformation. Because it absorbs, PC
Peeling between the stone plate and the concrete plate on both sides of the stone plate can be effectively prevented.

Furthermore, since the contact area between the connecting anchor and the concrete within the concrete plate is large, the connection strength is increased.

Further, since the elastic contact portion of the connecting anchor is fixed to the stone plate by making elastic contact with the back surface of the stone plate, it is possible to freely deal with differences in the thickness of the stone plate.

[Brief explanation of the drawing]

FIG. 1 is a front view of a connecting anchor according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a stone plate S and a concrete plate K connected by a connecting anchor 1, and FIGS. The figures are front views of connecting anchors 1' and 1'' according to other embodiments of the present invention, and FIG.
FIG. 3 is a cross-sectional view of the concrete plate K and the concrete plate K connected to each other. Explanation of the symbols of the main parts, 1... Connecting anchor, 1a... Groove insertion part of the connecting anchor, 1b...
...Hole insertion part of the connecting anchor, 1c...Elastic contact part of the connecting anchor, 2...Groove, 3...Hole, S...Stone plate, Sa...Side surface of the stone plate, Sb...Back side of the stone plate, K
...Concrete board.

Claims (1)

[Scope of utility model registration request] Straight groove insertion part 1 made of wire such as steel wire
A straight hole insertion part 1b is provided by bending one end of the groove insertion part 1a at a substantially right angle, and the other end of the groove insertion part 1a is bent in the same direction as the hole insertion part 1b, and the center part is bent largely inward. A connecting anchor 1 whose overall shape is approximately ⊃ is formed by providing a curved and approximately ⊃-shaped resilient contact portion 1c, and a groove 2 provided on the side surface Sa of the stone plate S and the forming end of the groove 2. In the drilled hole 3,
Insert the groove insertion part 1a and hole insertion part 1b of the connection anchor 1, respectively, and insert the back surface of the stone plate S.
A connecting anchor in a PC stone plate, characterized in that an elastic contact part 1c is brought into elastic contact with Sb, and a connecting anchor 1 is fixed to the side of the stone plate S by the restoring force due to elastic deformation of the elastic contact part 1c.