JPH0444748Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention is an injection device used in an adhesive injection method suitable for repairing cracks in structures. Regarding material injection washers.

(Prior Art) In repairing cracks that occur in structures such as concrete, a method of injecting an adhesive into the cracked area and repairing the cracked area is often used. Also known is a method of reinforcing a structure in which a reinforcing steel plate is attached to the surface of a structure such as concrete and an adhesive is injected between the plates in order to resist external forces that cause cracks.

Recently, as a repair method by injecting adhesive, pipes are attached to cracked areas at appropriate intervals, the area other than the injection pipe attachment part is sealed, an injection pump for curing the sealant is connected to the injection pipe, and adhesive is injected. This method is also proposed in Patent No. 251791.

Furthermore, when injecting an adhesive into an object to be injected in a cracked part of a structure such as concrete, the pressure applied to the object is reduced by pooling the adhesive in an adhesive reservoir (pressure buffer tube). Japanese Patent Publication No. 63-8154 proposes a repair method using adhesive injection in which adhesive is injected by continuously changing the pressure of an adhesive reservoir (pressure buffer tube).

(Problem to be solved by the invention) However, as is well known, the adhesive injection washer 4' conventionally used in this type of method has an injection port 3' as shown in FIGS. 6 and 7. It is made up of a pipe body 1' that has a structure and a plate body 2' that is attached to the surface of the structure using an adhesive such as putty.It is easy to attach it to a flat wall surface, but it may cause cracks near the corners of the structure. However, it is not easy to attach it to a structure, and it is necessary to rely on the method shown in FIG. 8, which results in the adhesive being injected into the space.

The present invention aims to eliminate such inconvenience by improving the plate.

[Structure of the idea]

(Means for solving the problem) Specifically, the plate body of the adhesive injection washer consisting of the plate body and the pipe body as described above is made of bendable synthetic resin, and the back side of the plate body is By making bending cuts, it is possible to deal with cracks near the corners of the structure.

(Function) In other words, it can be easily attached near corners by bending the plate according to the bending notches on the back surface of the plate.

(Example) Next, an example of the present invention will be described based on the drawings. Figure 1 is a bottom view of the washer according to the present invention, Figure 2 is a side view, Figures 3 and 4 are explanatory diagrams showing an example of attachment at a corner of a structure, and Figure 5 is an illustration of an example of attachment at a corner of a structure. It is an explanatory view showing an example of attachment.

4 is a washer, and plate 2 is used to attach it to a structure.
and a tube body 1 having an injection port 3.

The plate 2 is made of a material that is bendable, that is, has elasticity and can be restored even when bent, such as polypropylene, high impact grade polystyrene, etc.
It is made of polystiyrene, etc., and has two approximately V-shaped notches 5 for bending, sandwiching the tube body 1 on its back surface. In this embodiment, the tube body 1 is also made of synthetic resin, and is integrated with the plate body 2 by adhesion or fusion to form an adhesive injection washer as a whole. Note that the number of bending notches does not necessarily have to be two as in this embodiment, and it goes without saying that the number of bending notches may be one or more than two.

The adhesive injection washer 4 is attached to the concrete structure by bending one notch 5 formed by sandwiching the pipe body 1 between the plate body 2 and the pipe body 1 in FIG. 3 near the corner of the structure. ,
In FIG. 4, both cuts 5 formed between the pipe body 1 are bent and attached to a concrete structure. In FIG. 4, space B is smaller than space A in FIG.
As shown in FIG. 5, there is no difference from the conventional method of attachment except near the corners.

[Effect of idea]

Since the present invention is constructed as described above, in other words, since a bending cut is made on the back surface of the plate, it can be attached to a corner of a structure by bending it toward the back surface, and it can be attached by bending. As a result, the space at the corner can be eliminated or made small, so that the waste of the adhesive injected at such a part can be avoided.

[Brief explanation of the drawing]

Fig. 1 is a bottom view of the adhesive injection washer according to the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3, Fig. 4,
FIG. 5 is an example of use, FIG. 6 is a bottom view of a conventional adhesive injection washer, FIG. 7 is a side view of FIG. 6, and FIG. 8 is an example of use. In the drawings, 1 is a tube, 2 is a plate, 3 is an injection port, 4 is an adhesive injection washer, and 5 is a notch.

Claims (1)

[Scope of utility model registration request] An adhesive injection washer consisting of a plate body and a pipe body used for structural repair, characterized in that a bending cut is made on the back side of the plate body made of a bendable synthetic resin.