JPH0116847Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a synthetic resin safety cap for reinforcing bars.

When constructing a reinforced concrete structure, if the protruding ends of the reinforcing bars are left as they are, there is a risk of injury or injury due to workers hitting their bodies, so protect them with safety caps. It is recommended that you keep it.

Conventionally, this type of safety cap was made of a single-structure synthetic resin, and was inserted into the protruding end of a reinforcing bar in the cylindrical part of the body, and the reinforcing bar was inserted into the head part connected to the cylindrical part. A type that protects the protruding end of the reinforcing bar has been proposed, but since the head of the conventional one is semispherical, it may be difficult to insert the reinforcing bar into the protruding end (during reinforcement placement) or to protect the protruding end of the reinforcing bar. When retrieving from the edge (during concrete pouring), your fingers may slip, making it difficult to perform such work.Especially, it is recommended that the material be inserted somewhat firmly into the protruding end to avoid the risk of it falling off by itself. It was even more noticeable in such cases. Such problems can be solved by, for example, making the head a planar polygonal shape, but a single structure made of synthetic resin is made of a fairly hard material, so the angle formed on the outer circumferential surface of the head becomes dangerous. This will lead to a decrease in the protective effect. Such problems can be solved by creating a composite structure of a main body made of an elastic material such as rubber and a hard plate-like body built into the main body, as shown in, for example, Japanese Utility Model Application Publication No. 54-53823. This would eliminate the advantages of a single structure, namely ease of manufacture and therefore low cost.
Not a preferred solution.

The present invention has been made with the aim of solving such problems. Specifically, the present invention has a cylindrical body 1 for inserting into the protruding end of a reinforcing bar, and a cylindrical body 1 that is attached to the upper end of the body 1. In a single-structure synthetic resin safety cap consisting of a cap-shaped head 2 connected to cover the outer periphery of the body 1, the head 2 has a planar polygonal shape. None, and furthermore, a concave groove 3 extending upward from the lower end is formed at each corner of the inner circumferential surface 2a of the head 2, thereby reducing the wall thickness of each corner. Pertains to synthetic resin safety caps.

In a preferred embodiment of the present invention shown in the figures, the head 2 has a regular hexagonal shape in plan view;
Other polygonal shapes such as squares and regular octagons can be used. In addition, although a V-shaped groove 3 is shown, other shapes such as a U-shape or a similar shape can be used to reduce the wall thickness of the corner 2b portion of the outer peripheral surface of the head 2 from the inside. That's fine. It is desirable that such a groove 3 is formed from the bottom end of the corner to the top end as shown in FIG. 5, but there is no particular problem even if it ends a little before the top end. . The upper end of the outer peripheral surface of the head 2, particularly the upper end of the corner 2b, can be chamfered 4 as shown in FIGS. 1 and 2.

The present invention has the above-mentioned structure, and the cylindrical body 1 is inserted into the protruding end of the reinforcing bar, and the umbrella-shaped head 2
It protects the protruding end in the process.

In this case, in the present invention, the shape of the head 2 is particularly made into a planar polygonal shape, so that the fingers can easily grip the outer peripheral surface of the head 2, and the work of inserting and removing the reinforcing bar from the protruding end is facilitated. Even if it is to be inserted into a tight hole, it can be easily done and work efficiency can be improved, and it is also possible to easily achieve a tight insertion state without the risk of spontaneous falling off. A stable and reliable protection effect and high recovery rate can be obtained. Furthermore, in the present invention, grooves 3 are formed at each corner of the inner circumferential surface 2a of the head 2, and the thickness of the corners is reduced. The corner portion 2b, together with the elasticity of the synthetic resin that is its constituent material, exhibits good cushioning properties, can alleviate the impact applied from the outside, and is not dangerous despite the presence of the corner portion 2b. A good protective effect similar to that of a normal protective cap without the corner portion 2b can be obtained.

In this way, the present invention makes it easy to attach and detach the safety cap to the protruding end of the reinforcing bar without any deterioration in its protective effect, and also takes advantage of the advantages of this type of single-structure synthetic resin cap. This feature can be achieved without loss of safety, and the usefulness of this type of safety cap can be greatly improved.

In the present invention, various synthetic resins can be used as the synthetic resin used for molding the safety cap, and polyethylene, polypropylene, polyvinyl chloride, etc. can be particularly advantageously used.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, in which Fig. 1 is a front view thereof, Fig. 2 is a side view thereof, Fig. 3 is a plan view thereof, Fig. 4 is a bottom view thereof, and Fig. 5 is a longitudinal sectional view thereof. It is. In the figure, 1 is a body, 2 is a head, and 3 is a groove.

Claims (1)

[Scope of utility model registration request] Cylindrical body 1 for insertion into the protruding end of reinforcing steel
A single-structure synthetic resin safety cap is attached to the upper end of the body 1 and includes a cap-shaped head 2 that is connected to the upper end of the body 1 so as to cover the outer periphery of the body 1. The head 2 has a planar polygonal shape, and a groove extending upward from the lower end is formed at each corner of the inner circumferential surface 2a of the head 2, so that the wall thickness of each corner can be reduced. A safety cap made of synthetic resin for reinforcing bars, which is characterized by reduced .