JPH0328111Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fastening tool used when tightening a relatively flexible object to a desired object with a string, and the invention relates to a fastener that has a circular attachment part 2 approximately in the center of a steel wire of a required length. A circular hook part 3 is formed at one end, and a clamping part 4 is formed by folding and overlapping the steel wire and bending the tip diagonally outward at the other end. And,
The proximal end of the string is attached to the attachment part 2 of the clip, which has the clamping part 4 and the hook part 3 twisted by 90 degrees to each other, and the longitudinal axis is curved along the circumferential surface of the object to be fastened. The object to be fastened can be double-enclosed and fastened by hooking a required part of the string onto the hook part 3, folding it back, and having the tip of the string be held by the clamping part 4. The purpose is to provide a fastener that can be fastened simply and quickly, has a simple structure, and can be manufactured at low cost.

The illustrated embodiment will be described below.

Reference numeral 1 designates a clip made of steel wire, which is made by curving a steel wire of a required length into a circular shape to form a mounting portion 2, and curving one side of the steel wire into a circular shape to form a hook portion 3. , the other side is folded back and overlapped, and the folded end is bent diagonally upward to form the clamping part 4, and the orientation of the clamping part 4 and the hook part 3 are twisted by 90 degrees with respect to each other. The entire body is curved so that the longitudinal axis has a gentle arc shape.

5 is a string of required length, one end of which is tied to the attachment part 2 of the clip 1.

Using the fastener a of the present invention having the above configuration,
A case will be described in which an insulating tube 7 for preventing concrete from adhering to the cage-shaped reinforcing bars 6 of a cast-in-place concrete pile is fastened. This insulating tube 7 is made of foamed polyethylene, and is fitted into a portion corresponding to the concrete excess portion above the uppermost hoop reinforcement 9 of the vertical reinforcement 8 to prevent concrete from adhering to this portion. .

By the way, in the conventional insulating cylinder 7, the vertical stripes 8 are made of wire,
Although it has been done to fasten with adhesive tape, since the number of vertical bars 8 is large and the spacing between the rows is narrow, it is difficult to fasten with long wires, etc., which is not only time-consuming but also poor in work efficiency. There is an inconvenience that the fastening is insufficient and it tends to come off easily.

In the fastener a of the present invention, for example, a clip 1 is applied along the outer periphery of the lower end of an insulating cylinder 7, a required part of the string 5 is hung on the hook part 3 to form a ring, and the string is tied around the insulating cylinder 7. 5 is attached to the insulating cylinder 7 in advance by rewinding the part beyond the hook part 3 toward the clamping part 4 and fixing it with the adhesive tape 10 (FIG. 3).

As described above, the insulating tube 7 fitted with the fastener a is fitted onto each vertical strip 8, the tip of the string 5 is directed outward, and when the string 5 is pulled by holding this tip, the insulating tube 7 Since the relevant part of the string 5 is narrowed and tightened by the vertical stripes 8, the string 5 is forcibly inserted into the clamping part 4 while being tightened and fastened. As a result, the insulating cylinder 7 is fastened to the vertical reinforcement 8 (FIGS. 4 and 5).

Reference numerals 11 and 12 in FIG. 4 are sheathed pipes, which are mounted concentrically at locations corresponding to the horizontal dividing plan line between the pile body part and the extra pile part of the cage-shaped reinforcing bar 6. A known expandable crushing agent for crushing the excess concrete is injected, and the outer sheath pipe 12 is left empty.

13 and 14 are also sheath tubes, and the sheath tube 11
The expandable crushing agent is injected into the tank.

The materials, dimensions, etc. of the clips and strings are selected and determined as appropriate depending on the shape, size, etc. of the object to be fastened.

In addition, although the case where the insulating cylinder is used to connect the cage-type reinforcing bars of cast-in-place piles has been explained above, it is not limited to cast-in-place piles. May be used to fasten insulation or fasten cargo.

As is clear from the above, according to the present invention, a desired part of the string is hung over the hook of the clip to form a ring to double surround the object to be fastened, and the string is pulled to tighten the object. The object to be fastened can be fastened by an extremely simple operation of tightening the string and then inserting the string into the clamping part to fasten it. For example, as shown in the above embodiment, the work of fastening an insulating tube to a cage reinforcing bar can be done easily and easily. It can be done quickly.

Further, since it has a simple structure in which one end of the string is fixed to a clip having a hook portion and a clamping portion, it is easy to manufacture, suitable for mass production, and can be provided at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figures 1 and 2 are a front view and a perspective view, Figure 3 is a perspective view showing the fastener of the present invention installed in an insulating tube in advance, and Figures 4 and 5 are a front view and a perspective view. FIG. 2 is a perspective view and a side view of essential parts showing a state in which the insulating cylinder is fitted and fastened to the cage reinforcing bar. 2... Mounting part, 3... Hook part, 4... Clamping part, 1
...Clip, 5...string.

Claims (1)

[Scope of utility model registration request] A circular attachment part 2 is installed approximately in the center of the steel wire of the required length.
A circular hook part 3 is formed at one end, and a clamping part 4 is formed by folding and overlapping the steel wire and bending the tip diagonally outward at the other end. At the same time, the clamping part 4 and the hook part 3 are twisted by 90 degrees with respect to each other, and the longitudinal axis is curved along the circumferential surface of the object to be fastened. The proximal end of the string is tied together, and a required part of the string is hooked on the hook portion 3, folded back, and the tip is held in the clamping portion 4, thereby doubly enclosing and fastening the object to be fastened. A fastener characterized by being able to