JPH0547786Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a spacer for reinforcing bars. More specifically, it relates to spacers for reinforcing bars that are used to keep the wire mesh that serves as reinforcing bars above the slope when spraying concrete to prevent the slopes of mountain roads and expressways from collapsing. be. It is also used for reinforcing floor slabs.

[Prior art and its issues]

The slopes on either side or one side of roads, such as mountain roads and expressways, that are carved out of mountains are reinforced by spraying concrete, as there is a risk of them collapsing if left as they are. Concrete is sprayed after the wire mesh that serves as reinforcing bars is stretched on the slope, but in order to make the wire mesh fully perform its function as reinforcing bars and to prevent the concrete from peeling off,
It is necessary to raise the wire mesh slightly above the slope so that concrete can be filled between the wire mesh and the slope. Therefore, conventionally, as a spacer for this purpose,
Plastic pipes cut to the required length are used. A required number of spacers were installed between the wire mesh and the slope so that the spacers were applied to the intersections of the wire rods so as not to fall into the mesh of the wire mesh. However, conventional spacers have the following problems. That is, the spacer is simply cylindrical and smooth at both ends, and is not particularly provided with means for fixing it to the wire mesh. Therefore, after installation, the spacer sometimes shifts and gets stuck in the mesh of the wire mesh or comes off, rendering it useless. Therefore, at the site, we monitor and monitor the spacers to ensure that they do not come off the reinforcing bars.
However, it is actually a time-consuming task to manage the large number of spacers installed between the slope and the wire mesh until the concrete is sprayed.

[Purpose of invention]

An object of the present invention is to provide a reinforcing bar spacer that does not easily come off or shift once attached to the reinforcing bar, and does not require much effort to manage.

[Structure of the idea]

The structure of the present invention taken to solve the above problems and achieve the purpose is as follows. A spacer installed between an installation surface and a reinforcing bar, which has a required number of legs made of an elastic member, and an engaging part that engages with the reinforcing bar on the outside of each leg. Each leg is deformable in the direction of narrowing as a whole, and the engaging portion and the reinforcing bar are spacers for the reinforcing bar that are engaged with each other by an outward repulsive force of each leg. The legs of the reinforcing bar spacer have a predetermined height so as to form a certain gap between the slope and the wire mesh when attached to the reinforcing bar, for example, a wire mesh. The elastic material used as the material of the leg portion is, for example, a metal or synthetic resin wire or thin plate material, and is not particularly limited. The legs are formed by deforming these elastic materials into a predetermined shape, but the overall shape is not particularly limited.
For example, a structure in which two U-shaped and U-shaped members are fixed in a criss-cross manner at the center;
Alternatively, it may have a structure in which two members formed in an elliptical shape are intersected and fixed together. For example, when the reinforcing bar is a wire mesh, the structure of the engaging part is not particularly limited as long as it can reliably engage the wire material that is braided into a continuous diamond shape.
shape, U shape, U shape, etc. Although it is sufficient to provide the engaging portion on either the upper or lower side of the reinforcing bar spacer, it is preferable to provide the engaging portion on both sides so that there is no need to consider the orientation when installing the reinforcing bar spacer. In addition, the reinforcing bar spacer does not necessarily need to be attached to a certain part of the reinforcing bar, for example, in the case of wire mesh, it is not necessary to attach it to the intersection of wire rods, and it may be attached to other parts as long as it can perform its function sufficiently. .

【Example】

The present invention will be described in more detail with reference to the embodiment shown in the drawings. Fig. 1 is a perspective view of one embodiment of the present invention. Reference numeral 1 denotes a reinforcing bar spacer, which is made of metal wire. The reinforcing bar spacer 1 has four legs 2. The upper beam 21 of each leg 2 is cross-shaped, and has a protruding length corresponding to the size of the mesh of the wire mesh 3 that serves as the attachment portion. An engagement portion 23 is provided slightly below the beam 21 of each leg 2. The engagement portion 23 protrudes inward and is formed into an Ω shape so that the wire 31 of the wire mesh 3 can be attached. In addition, the lower portion of each leg 2 is provided with a stabilizing bar 25 that is bent inward at a right angle so that the reinforcing bar spacer 1 can be easily stabilized. <<Operation>> Fig. 2 is a plan view showing the state of use, and Fig. 3 is an explanatory diagram showing the state of engagement with the wire mesh. The operation of this embodiment will be described with reference to Figs. 1 to 3. First, the wire mesh 3 is stretched on the slope 5. Next, each leg 2 of the reinforcing bar spacer 1 is deformed so as to be compressed inward. The compressed reinforcing bar spacer 1 is then placed in a wire mesh 3.
The wire mesh 3 is inserted into the mesh 33 of the slope 5 from above.
When the reinforcing bar spacer 1 is pushed further in, the engaging portion 23 engages with the wires 31 of the wire mesh 3, and the wires 31 are fixed within the mesh 33 by the outward repulsive force of each leg 2. In this manner, the required number of reinforcing bar spacers 1 are attached to the wire mesh 3, and the wire mesh 3 is kept above the slope 5. In this manner, once the reinforcing bar spacer 1 is fitted into the mesh 33 of the wire mesh 3, it will not easily come off or shift, and the wire mesh 3 can be reliably kept above the slope 5 until the concrete is sprayed. Note that the present invention is not limited to the embodiment shown in the drawings, and various modifications are possible within the scope of the claims of the utility model registration.

[Effect of the idea]

The spacer for reinforcing bars according to the present invention has a required number of legs formed of elastic members, each leg has an engaging part on the outside side that engages with the reinforcing bars, and each leg has a can be deformed in the direction of narrowing. Therefore, once it is engaged with the reinforcement, it is fixed by the outward repulsive force of the leg, so it will not easily come off or shift. Therefore, unlike conventional spacers, it is easy to manage the attached spacers since it does not require effort to prevent them from coming off. Further, when the reinforcing bar is made of wire mesh, the spacer can be easily attached by simply narrowing each leg and inserting it into the mesh. Furthermore, since the reinforcing bars can be reliably lifted from the slope before the concrete is sprayed, the concrete can be reliably inserted between the slope and the reinforcing bars, resulting in a slope protection construction with excellent strength. I can do it.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a plan view showing the state of use, and FIG. 3 is an explanatory diagram showing the state of engagement with a wire mesh. 1... Spacer for reinforcing bars, 2... Legs, 23...
...Engagement part.

Claims (1)

[Scope of utility model registration request] A spacer installed between an installation surface and a reinforcing bar, which has a required number of legs made of an elastic member, and an engaging part that engages with the reinforcing bar on the outside of each leg. 1. A spacer for reinforcing bars, wherein each leg is deformable in a direction in which the entire leg narrows, and the engaging portion and the reinforcing bar are engaged with each other by an outward repulsive force of each leg.