JPH08177823A - Outer wall mending metal fitting - Google Patents

Abstract

PURPOSE: To provide an outer wall mending metal fitting which mechanically connects mortar to a concrete body irrespective of thickness of the mortar, and causes easy charging of adhesive. CONSTITUTION: An anchor body 10 has a pipe part 11 at least at its leading end, and corresponding widening means 13, 14 at an opening end of the pipe part 11. A coil spring 15 is provided on a base end of the anchor body 10. A base end of the coil spring 15 is coated with soft resin and provided with a funnel-like charging port 16 for adhesive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repair metal fitting for repairing peeling of mortar applied to the surface of a concrete skeleton.

[0002]

2. Description of the Related Art As a metal fitting for repairing peeling of mortar, one described in, for example, Japanese Utility Model Laid-Open No. 4-37762 is known. FIG. 5 shows the above-mentioned repair pin, which is provided with an adhesive pouring port 2 on the body portion of the main body 1 formed in a tubular shape, and a slit 5 on the tip end, and is expanded inside the main body 1. It is equipped with a stopper 9. Then, in the repair work, a hole from the mortar to the concrete frame is bored, the main body 1 is inserted into the hole, and then the expansion plug 9 is tapped to fix the main body 1 to the concrete frame. Next, the adhesive injected from the injection port 3 is filled into the gap between the mortar and the skeleton from the spout 2 to bond the mortar to the skeleton again.

In addition to the above-mentioned repair pin, in the conventionally known repair pin, the pin connecting the mortar and the skeleton is a metal pipe. This is an effective means in that the mortar and the skeleton can be mechanically connected to each other, and thus the mortar can be prevented from dropping even if the adhesive is burned down by a fire or the like.

The construction of mortar on the surface of the concrete body is to ensure the flatness of the building, and therefore the thickness of the mortar is usually not constant. For this reason, if the repair pin has a fixed length, mechanical connection may not be sufficiently performed when the mortar part is thin, and when it is thick, in order to eliminate this, a plurality of types with different lengths may be used. The problem arises that pins must be prepared.

[0005]

The problem to be solved by the present invention is to provide a metal fitting for external wall repair which mechanically connects a mortar and a concrete skeleton regardless of the thickness of the mortar, and which is easy to inject an adhesive. Is intended to provide.

[0006]

Means for Solving the Problems In the present invention, a means for solving the problems includes an anchor main body having a pipe portion formed at least at a tip end thereof and an expanding means for the portion at an open end of the pipe portion, It is characterized in that a coil spring provided at the base end portion of the anchor main body, and a funnel-shaped adhesive injection port coated with a soft resin at the base end portion of the coil spring are provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall perspective view, FIG. 2 is a sectional view, and FIG.
FIG. 4 is a sectional view showing a construction state. In FIGS. 1 and 2, 10 is an anchor main body, a connecting portion 12 in which a pipe portion 11 is formed from a tip portion to a central portion, a base end portion has a smaller diameter than the main body, and a thread portion is formed on an outer peripheral portion. Is provided. Reference numeral 13 is a plurality of slits formed along the axial direction from the open end of the pipe portion 11, and an expansion plug 14 is attached to the open end portion.

Reference numeral 15 is a coil spring, the front end of which is connected to the connecting portion 12 of the anchor main body 10 and the base end of which is provided with a funnel-shaped injection port 16 which is covered with a soft resin such as vinyl chloride. There is. The coil spring 15 is
The tip portion is formed as a small diameter portion 15a and screwed to the thread of the connecting portion 12, the midway spiral portion 15b has the same diameter as the anchor main body 10, and the base end portion has a large diameter toward the open end. The funnel-shaped portion 15c is formed.

The repair metal fitting of the embodiment has the above-described structure. To repair the mortar, first, the mortar 20 is separated from the concrete skeleton 21 and a gap 22 is formed between the mortar 20 and the concrete skeleton 21. A hole 23 is formed. FIG. 3 shows a case where the mortar 20 is thin, and FIG.
Indicates that the mortar 20 is thick.

In any case, a repair metal fitting is inserted into the hole 23 with the expansion plug 14 directed toward the bottom of the hole, and a driving rod (not shown) is inserted from the injection port 16 to tap the connecting portion 12. In the anchor main body 10, the expansion plug 14 is press-fitted into the pipe portion 11 to expand the tip portion, and the tip portion bites into the body,
As a result, the anchor main body 10 is fixed to the concrete skeleton. At the same time, the injection port 16 is the hole 2 of the mortar 20.
3 is tightly engaged at the open end.

Since the injection port 16 is coated with vinyl chloride, it can be fixed without damaging the mortar when the repair metal fitting is driven in. The injection port 16 adheres to the hole 23 due to the elasticity of vinyl chloride to provide a packing effect, and prevents the adhesive from leaking to the mortar surface when the adhesive is injected.

Since the coil spring 15 connecting the anchor main body 10 and the injection port 16 is expandable / contractible in the length direction, as shown in FIG. 4, when the mortar is thick and the hole 23 is deeply formed. However, the anchor main body 10 reaches the bottom of the hole and the pipe portion 11 expands, and the injection port 16 is locked at the open end of the hole without being recessed from the mortar surface.

After the repair metal fitting is driven in, the injection port 16
When an adhesive made of epoxy resin (not shown) is injected, the adhesive reaches the gap 22 through the coil spring 15 and rejoins the peeled mortar 20 and the concrete skeleton 21.

In the embodiment, the anchor main body 10 is fixed to the concrete skeleton 21 and the injection port 16 is fixed to the mortar 20. Since these are connected by the coil spring 15, the adhesive is burned down by fire or the like. Even in such a case, the mortar and the skeleton are mechanically connected to each other, so that safety is ensured to prevent the mortar from falling.

Although the anchor main body 10 and the coil spring 15 are connected by screw connection in the embodiment, the connecting portion may be welded in order to secure the connection therebetween.

[0016]

According to the present invention, since the anchor main body fixed to the concrete skeleton and the injection port for fixing the adhesive to the mortar and injecting the adhesive are connected by the coil spring, the mortar has a thick and deep hole. Even so, there is an effect that it is possible to mechanically connect the mortar and the concrete skeleton.

Further, according to the present invention, since the adhesive injected from the injection port is immediately injected into the gap between the mortar and the skeleton, high pressure input is not required at the time of injecting the adhesive, and therefore the workability of repair work is good. It has the effect.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a repair fitting of the present invention.

FIG. 2 is a sectional view.

FIG. 3 is a cross-sectional view showing a construction example.

FIG. 4 is a cross-sectional view showing another construction example.

FIG. 5 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Anchor main body 11 Pipe part 12 Connecting part 13 Slit 14 Expansion plug 15 Coil spring 15a Small diameter part 15b Spiral part 15c Funnel-like part 16 Pouring port 20 Mortar 21 Concrete skeleton 22 Gap 23 Hole

 ─────────────────────────────────────────────────── ─── Continuation of front page (71) Applicant 390022389 Sanko Shoji Co., Ltd. 1-24-10 Higashi-nippori, Arakawa-ku, Tokyo (71) Applicant 390022390 Sanko Kogyo Co., Ltd. 1-24-24 Higashi-nippori, Arakawa-ku, Tokyo No. (72) Inventor Junro Shinohara 645 Kawakamicho, Totsuka-ku, Yokohama 2-203 Mitsubishi Petrochemical Co. Ltd. (72) Inventor Katsuyoshi Imaizumi 5-19-12 Shimotakaido, Suginami-ku, Tokyo (72) Inventor Takeshi Otsuka Tokyo 3-7-5 Numabukuro, Nakano-ku, Tokyo (72) Inventor Yasue Yagisawa 6-7-19 Hanada, Koshigaya City, Saitama Prefecture

Claims (3)

[Claims] 1. An anchor main body having a pipe portion formed at least at a distal end portion thereof and an expanding means for expanding the portion at an open end of the pipe portion, a coil spring provided at a base end portion of the anchor main body, and the coil spring. An outer wall repair metal fitting having a funnel-shaped adhesive injection port coated with a soft resin at the base end thereof. 2. The anchor main body has a base end portion formed to have a small diameter, a thread is formed on the small diameter portion, and a coil spring is screwed to the thread. The outer wall repair metal fittings described. 3. The outer wall repair metal fitting according to claim 1 or 2, wherein the anchor main body has a coil spring welded to a base end portion thereof.