JPS5927487Y2 - Rebar safety cap - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a safety cap for reinforcing bars.

BACKGROUND ART Conventionally, in reinforced concrete construction, exposed reinforcing bars during the construction process often caused serious accidents.

For example, many crashes that would have resulted in only bruises ended up with people getting stuck in the rebar, resulting in death or injury, or the tip of the rebar hitting the eye, resulting in blindness.

Therefore, for safety reasons, the exposed reinforcing bars are generally bent, and then bent back to their original position if necessary, such as during concrete pouring.

However, especially at sites where a large amount of reinforcing bars are used, the work required a great deal of effort, and construction efficiency was significantly reduced.

Furthermore, there was also the problem that bending and unbending of reinforcing bars caused extreme deterioration of the bending points.

In addition, large-diameter structural reinforcing bars are usually joined by welding, but if the welding takes a long time, the exposed reinforcing bars will rust, so the rust must be removed using a grinder, etc. before welding, and this work is difficult. It was troublesome.

On the other hand, when connecting small-diameter reinforcements, the ends of both reinforcements are usually overlapped for a predetermined length, and the overlapping portion is tied and fixed with binding wire, but this process is extremely time-consuming and time-consuming. It required a lot of effort.

In view of these points, the present invention has developed a reinforcing bar that can prevent serious accidents caused by exposed reinforcing bars as described above, can obtain the rust-preventing effect of the reinforcing bars, and can easily connect the reinforcing bars. The purpose is to obtain a safety cap.

Embodiments of the present invention will be described below with reference to the drawings.

Although the present invention is mainly used for reinforcing bars, it can also be applied to all kinds of protrusions that have the same problems as reinforcing bars, such as the ends of temporary high floors such as scaffolding, guardrails, connecting bolts for fences, etc.

Therefore, the term "reinforcing bar" here refers to the reinforcing bar itself and its analogues.

The cap 1 according to the present invention is made of an elastic material such as rubber or plastic and is formed into a roughly abacus-spherical shape as shown in the figure, and has a rounded shape with no edges as a whole.

In addition, the cap 1 is provided with a mounting hole 2 for the reinforcing bars at the center of the bottom, and a cutout-shaped reinforcing bar that penetrates along the axial direction of the mounting hole 2 and opens toward the outer circumference at a peripheral portion. A matching hole 3 is provided.

This cap 1 is attached to the tip of an exposed reinforcing bar A through a mounting hole 2 at a construction site such as a reinforced concrete construction site, as shown in FIGS. 3 and 4.

The cap 1 can be used for both large-diameter structural reinforcement and small-diameter reinforcement, and the mounting hole 2 is formed to have a diameter that corresponds to the reinforcement to be used.

In this case, for the deformed reinforcing bar A as shown in Figs. 3 and 4, the hole diameter d1 of the attachment hole 2 is formed to be approximately equal to the diameter dimension D1 of the small diameter part of the reinforcing bar A, so that the so-called so-called Use the elasticity of cap 1 to connect the large diameter part of the clasp to the mounting hole 2.
By press-fitting the cap 1 to the reinforcing bar 1, the cap 1 can be securely attached to the reinforcing bar 1 without fear of accidentally falling off.

Moreover, the rust prevention effect of the cap 1 of the reinforcing bar A is further advantageous.

On the other hand, for ordinary reinforcing bars, the same effect as described above can be obtained by making the diameter of the mounting holes 2 smaller than the diameter of the reinforcing bars, or by forming the mounting holes 2 in a tapered shape that tapers slightly upward. It will be done.

By covering the tip of the exposed reinforcing bar A with the cap 1 in this way, it is possible to prevent serious injuries caused by the exposed reinforcing bar, such as being skewered by the reinforcing bar A in the event of a fall, or causing blindness due to being poked in the eye by the tip of the reinforcing bar. This can prevent serious personal injuries.

In particular, since the cap 1 is made of an elastic material such as rubber or plastic, it has a cushioning effect on the human body, and since it has a rounded shape with no edges, it is effective in preventing injuries. becomes even higher.

Therefore, if this cap 1 is used, there is no need to bend the reinforcing bars one by one for safety as in the conventional case, and of course there is no deterioration of the reinforcing bars due to bending and unbending.

Moreover, in addition to the above-mentioned basic safety function, this cap 1 can also function as a connecting tool for reinforcing bars when used for narrow-diameter reinforcing bars.

That is, as shown in FIGS. 3 and 4, when connecting reinforcing bar B to reinforcing bar A, with the cap 1 attached to reinforcing bar A as the original part, the lower end of reinforcing bar B as additional reinforcing bar is connected to The reinforcing bar A is engaged with the reinforcing bar engaging hole 3 of the cap 1 in the radial direction through the opening 31 on the middle circumferential side thereof at a position where the so-called covering allowance (wrap length) determined by the standard is maintained for the reinforcing bar A.

This allows reinforcing bar B to be easily connected to reinforcing bar A.
Compared to the conventional connection method using binding wires, the work of connecting reinforcing bars (bar arrangement) can be significantly simplified.

In this case, in order to obtain a reliable reinforcing bar connection state, the reinforcing bars B are press-fitted into the reinforcing bar retaining holes 3.

As a means for this, basically, the hole diameter d2 of the reinforcing bar engagement hole 3 is
Similarly to the attachment hole 2, it is formed to be approximately the same as the small diameter portion diameter D1 of the deformed reinforcing bar B.

Further, the width m of the opening 31 of the engagement hole 3 may be equal to the hole diameter d2, that is, the diameter dimension D1 of the small diameter portion, or may be formed to be slightly smaller as shown in the drawing.

Even when the opening width m is formed to be smaller than the diameter dimension d1 of the small diameter portion, the engagement hole 3 is opened in the outer circumferential direction and is more easily deformed elastically than the attachment hole 2, so that the cap 1, the engagement hole 3 expands sufficiently to allow the reinforcing bar B to be press-fitted and secured.

Further, in order to increase the reinforcing bar retention force, it is desirable to fit the entire reinforcing bar B into the engagement hole 3.

For this reason, the length l of the engagement hole 3 in the direction in which the reinforcing bar B is inserted is set to be equal to the large diameter dimension D2 of the reinforcing bar B, or to be slightly larger as shown in the figure.

By press-fitting and engaging the reinforcing bars B into the reinforcing bar engagement holes 3 formed in this way, the reinforcing bars B can be firmly fixed to the cap 1 in the vertical and horizontal directions, thus ensuring a reliable connection between the reinforcing bars A and B. can get.

The reinforcing bar engaging hole 3 only needs to be able to hold the reinforcing bar vertically and horizontally with respect to the cap 1, and the shape and dimensions of the reinforcing bar engaging hole 3 can be appropriately selected within a range that satisfies this condition.

On the other hand, in the case of structural bars that are mainly connected by welding, by covering the reinforcing bars with the cap 1, a rust-preventing effect on the tip of the reinforcing bars can be obtained. There is no need to remove the rust, and the cap 1 can be removed and welded immediately.

In addition, if the cap 1 is made of plastic,
Since there is no risk of corrosion either in the air or in concrete, there is no need to remove it from the reinforcing bars each time concrete is poured, and it can be embedded directly into concrete.

This is extremely advantageous in construction.

Further, if the cap 1 is colored red, yellow, or other color, or coated with luminous paint, the presence and position of the reinforcing bars will be clearly indicated, which is more preferable from a safety standpoint.

By the way, the specific shape of the cap 1 is not limited to the roughly abacus spherical shape shown in the drawings, but may of course be spherical, or may be a thick disk shape without edges.

In short, it has a rounded shape with no edges, and has an appropriate thickness (height) and diameter, which is good.

Further, in the embodiment shown in FIGS. 1 to 4, the reinforcing bar retaining hole 3 is provided relatively apart from the mounting hole 2 in the radial direction, but as shown in FIGS. The hole 3 may be provided in a state in which it partially communicates with the mounting hole 2 in the radial direction, or in close proximity thereto.

If this is done, the reinforcing bars A and B will approach each other in the radial direction, and the reinforcing bars will be connected to each other in the so-called overlapping state, which is a preferable connection state.

As mentioned above, the cap of the present invention is highly effective in preventing serious accidents caused by exposed reinforcing bars, significantly improving the safety of on-site work, and eliminating the hassle of bending and unbending reinforcing bars. Work that causes deterioration of reinforcing bars can be made unnecessary.

It also functions as a simple connection tool for reinforcing reinforcement, and the work for connecting reinforcement can be made much more efficient than when using conventional binding wires.

Furthermore, since it also exhibits a rust-preventing effect on the tips of reinforcing bars, it is extremely useful in practical terms, such as making welding work more efficient, especially for structural bars.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a bottom view, Fig. 3 is a vertical sectional view showing the state of use, and Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3. FIG. 5 is a bottom view showing another embodiment, and FIG. 6 is a longitudinal sectional view of the same in use. 1...Cap, 2...Mounting hole, 3.
...Reinforcing bar engagement hole, A, B...Reinforcing bar.

Claims (1)

[Claims for Utility Model Registration] 10 Made of elastic material, the whole is formed into a rounded shape with no edges, with mounting holes for the reinforcing bars provided at the bottom, and along the axial direction of the mounting holes in the peripheral part. 1. A safety cap for reinforcing bars, characterized in that a reinforcing bar engaging hole is provided therethrough and opens in the outer circumferential direction. 2. A safety cap for reinforcing bars according to claim 1, characterized in that plastic is used as the elastic material. 3. The safety cap for reinforcing bars as set forth in claim 1 or 2 of the utility model registration claim, which is entirely or partially coated with a suitable color or coated with a luminescent paint.