JP2023131387A - Fixing metal fitting and jointing method - Google Patents

Abstract

To provide a fixing metal fitting easy to determine whether or not an adhesive is filled in a hole part of a fixing object in which a rod-like jointing tool is inserted, in a GIR jointing or Chemical Anchor (R) jointing.SOLUTION: A fixing metal fitting includes a cylindrical fastening member having an opening at a center, and a metal fitting body having a flat plate part provided with a circular hole. The cylindrical fastening member has a cutout groove provided at one end. At a position where the opening overlaps the circular hole, the one end of the cylindrical fastening member and one face of the flat plate part are fixed, and the opening part is communicated with the cylindrical fastening member through the cutout groove.SELECTED DRAWING: Figure 4

Description

The present invention relates to a fixture and a joining method.

GIR (Glued in Rod) joining has conventionally been known as a method for joining pieces of wood together in the axial direction using dissimilar members (for example, hardware, steel rods, etc.) in wooden buildings. GIR (Glued in Rod) joining involves drilling a hole in the wood, inserting a rod-shaped joining tool into the hole, and curing the adhesive that fills the gap, reducing stress through the adhesive force of the adhesive and the joining tool. This is a joining method that generates joint proof stress by transmitting

Further, as techniques related to GIR bonding, for example, Patent Documents 1 and 2 are known.

Japanese Patent Application Publication No. 2018-199936 Japanese Patent Application Publication No. 2020-172069

On the other hand, for example, in structural reinforcement of a wooden building using GIR joining, a metal fitting of a desired shape may be fixed together with a rod-shaped joining tool near a hole formed in the wood. In such cases, the area around the hole in the wood is covered with metal fittings, so when inserting the rod-shaped connector into the hole, it is necessary to check whether the inside of the hole (the gap between the rod-shaped connector and the hole) is filled with adhesive. There was a problem in that it was difficult to visually confirm.

The present invention has been made in view of the above-mentioned circumstances, and in GIR joining or chemical anchor (registered trademark) joining, the inside of a hole in a fixed object (for example, wood or concrete) into which a rod-shaped joining tool is inserted. An object of the present invention is to provide a fixing metal fitting that can easily determine whether or not it is filled with adhesive, and a joining method using the same.

In order to solve the above problems, the fixing metal fitting of the present invention has the following features:
a cylindrical fastening member with an opening in the center;
A metal fitting body including a flat plate portion with a circular hole;
including;
The cylindrical fastening member is provided with a notched groove at one end,
The one end of the cylindrical fastening member and one surface of the flat plate portion are fixed at a position where the opening and the circular hole overlap, and the opening and the cylindrical fastening are connected to each other through the notch groove. It is characterized by communicating with the outside of the member.

The joining method of the present invention is a method of joining a fixing object, the fixing fitting according to claim 1, and a rod-shaped joining tool, comprising the following steps:
A first step of injecting adhesive into the hole provided in the object to be fixed;
The other surface of the flat plate portion of the fixing fitting is brought into contact with the periphery of the hole, and the opening of the cylindrical fastening member, the circular hole of the fitting main body, and the hole of the fixing object are The second step of matching the positions;
The rod-shaped connector is inserted into the hole of the object to be fixed through the opening of the cylindrical fastening member and the circular hole of the metal fitting body, and the adhesive is used to connect the rod-shaped connector and the object to be fixed. Its technical feature is that it includes a third step of fixing.

According to the fixing fitting and joining method of the present invention, in GIR bonding or chemical anchor (registered trademark) bonding, it is possible to easily check whether the hole of the fixed object into which the rod-shaped connecting tool is inserted is filled with adhesive. can be determined.

FIG. 1 is a side view illustrating an embodiment of the fixture of the present invention. It is a perspective view of the cylindrical fastening member (nut) in the fixture illustrated in FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating an embodiment of a method for joining wood and a rod-shaped joining tool according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating an embodiment of a method for joining wood and a rod-shaped joining tool according to the present invention.

Hereinafter, one embodiment of the fixture of the present invention will be described. FIG. 1 is a side view illustrating an embodiment of the fixture of the present invention. FIG. 2 is a perspective view of the cylindrical fastening member in the fixture illustrated in FIG. 1.

The fixture 1 includes a cylindrical fastening member 2 and a fixture body 3.

The cylindrical fastening member 2 has an opening 21 in the center and a cutout groove 22 at one end.

Specifically, in the embodiment shown in FIGS. 1 and 2, a hexagonal nut with a groove is illustrated as the cylindrical fastening member 2. Specifically, this cylindrical fastening member 2 has a female thread formed on an inner wall surface forming a substantially cylindrical central opening 21, and a plurality of notched grooves 22 at one end in the axial direction. The notch groove 22 radially penetrates the outer peripheral part 23 of the cylindrical fastening member 2 (nut) on one end side in the axial direction, and the central opening 21 and the outside of the outer peripheral part 23 are connected through the notch groove 22. It's communicating.

The position, number, width, and depth of the notch grooves 22 are not particularly limited, and can be set as appropriate depending on the size of the hole in the object to be fixed (for example, wood or concrete), the amount of adhesive injected into the hole, etc. can do.

Further, the outer shape, axial length, inner diameter of the opening 21, etc. of the cylindrical fastening member 2 can be appropriately designed depending on the form and diameter of the rod-shaped joint portion, which will be described later.

The metal fitting body 3 includes a flat plate portion 32 in which a circular hole 31 is provided.

It is preferable that the flat plate portion 32 is a thin metal plate. The shape of the flat plate portion 32 is not particularly limited and can be appropriately set depending on the desired joint structure, and examples thereof include a rectangular shape when viewed from the front, a circular shape when viewed from the front, and the like.

The size of the circular hole 31 corresponds to the size of the opening 21 of the cylindrical fastening member 2.

The metal fitting body 3 only needs to include the flat plate portion 32, and its overall shape is not particularly limited. That is, the metal fitting main body 3 may have various forms that can be used for structural reinforcement of wooden buildings, for example, and may have an upright piece bent from the end of the flat plate portion 32.

The fixing metal fitting 1 is fixed by having one end of the cylindrical fastening member 2 (the end on the side where the notched groove 22 is provided) and one surface of the flat plate portion 32 of the metal fitting main body 3 contacting each other. In this state, in the fixture 1, the opening 21 of the cylindrical fastening member 2 and the circular hole 31 of the flat plate portion 32 of the fixture body 3 overlap in the vertical direction. The method of fixing the cylindrical fastening member 2 and the metal fitting body 3 is not particularly limited, and examples thereof include welding and adhesive methods.

The notch groove 22 of the cylindrical fastening member 2 forms a gap with the flat plate portion 32 of the metal fitting body 3. Therefore, in the fixture 1, the opening 21 of the cylindrical fastening member 2 and the outside communicate with each other through the notch groove 22 of the cylindrical fastening member 2.

Next, an embodiment of the joining method of the present invention will be described.

The joining method of the present invention is a method of joining an object to be fixed, the above-described fixture of the present invention, and a rod-shaped joining tool. 3 and 4 are schematic diagrams illustrating an embodiment of the joining method of the present invention.

The joining method of the present invention includes the following steps:
A first step of injecting the adhesive G into the hole H provided in the fixed object W;
The other surface of the flat plate part 32 of the fixture 1 is brought into contact with the periphery of the hole H, and the opening 21 of the cylindrical fastening member 2, the circular hole 31 of the fixture body 3, and the hole H of the fixing object W are brought into contact with each other. A second step of matching the positions of;
The rod-shaped connector B is inserted into the hole H of the object W to be fixed through the opening 21 of the cylindrical fastening member 2 and the circular hole 31 of the metal fitting body 3, and the rod-shaped connector B and the object W to be fixed are connected with the adhesive G. It includes a third step of fixing.

Each step will be explained below.

In the first step, adhesive G is injected into a hole H provided in an object W to be fixed (for example, wood, concrete, etc.).

The hole H can be formed to have a predetermined diameter and depth using a drill or the like. The inside of the hole H can be cleaned as appropriate.

The type of adhesive G is not particularly limited, but adhesives for chemical anchors (registered trademark) can be preferably exemplified. Further, the injection amount of the adhesive G can be appropriately designed depending on the size of the hole H, the size of the rod-shaped connector B, and the like.

In the second step, the other surface (the surface to which the cylindrical fastening member 2 is not fixed) of the flat plate portion 32 of the fixture 1 is brought into contact with the periphery of the hole H of the fixing object W, and the cylindrical fastening member 2, the circular hole 31 of the fitting body 3, and the hole H of the object W to be fixed are aligned. Thereby, the opening 21 of the shaped fastening member, the circular hole 31 of the metal fitting body 3, and the hole H of the fixing object W communicate in the vertical direction.

Furthermore, the fixture 1 can be fixed to the object W to be fixed using various methods.

In the third step, the rod-shaped connector B is inserted into the hole H of the object W to be fixed through the opening 21 of the cylindrical fastening member 2 and the circular hole 31 of the metal fitting body 3, and the rod-shaped connector B is attached with the adhesive G. A fixed object W is fixed.

Although the rod-shaped connector B is not particularly limited, a bolt having a head b1 and having a small hole clearance is preferable. In this embodiment, a hexagonal bolt having a head b1 is exemplified, and when the rod-shaped connector B (hexagonal bolt) is inserted to a predetermined depth in the hole H, the rod-shaped connector B is inserted into the cylindrical fastening member. 2, the head b1 and the cylindrical fastening member 2 can be brought into contact with each other, whereby the rod-shaped connector B is fixed in the vertical and horizontal directions.

By inserting the rod-shaped connector B into the hole H, the adhesive G rises up the hole H and can fill the hole H (the gap between the rod-shaped connector B and the hole H). As this adhesive G hardens, the rod-shaped connector B and the object W to be fixed are fixed.

In the third step, it can be determined whether the hole H is filled with the adhesive G based on the presence or absence of the adhesive G flowing outward from the notch groove 22 of the cylindrical fastening member 2. That is, when the hole H is filled with the adhesive G by inserting the rod-shaped connector B into the hole H, a part of the adhesive G passes through the circular hole 31 of the metal fitting body 3, and the cylindrical fastening member 2 is filled with the adhesive G. It flows out from the opening 21. Therefore, when the adhesive G flows out from the opening 21 of the cylindrical fastening member 2, it can be determined that the hole H is filled with the adhesive G. In other words, if the adhesive G does not flow out from the opening 21 of the cylindrical fastening member 2, the amount of adhesive G injected into the hole H is not sufficient and the hole H is filled with the adhesive G. It can be determined that there is a possibility that the

In addition, in the joining method of the present invention, in the third step, the adhesive G flowing out from the opening 21 of the cylindrical fastening member 2 hardens on the flat plate part 32 of the metal fitting body 3, so a wiping operation is not necessary. It also has the advantage of being free of debris, making construction work more efficient.

Conventional Chemical Anchors (registered trademark) have the following problems: (1) It is difficult to tell how the adhesive is filled in the hole, and (2) the rod-shaped connector is fixed in the center of the hole of the object to be fixed and allowed to harden. (3) After the adhesive has hardened, when joining the fixing fittings, it is necessary to prevent the nuts from loosening (double nuts or spring washers).

On the other hand, in the bonding method of the present invention, as described above, it is easy to check the state of filling of the adhesive in the hole. In addition, in the joining method of the present invention, the fixing metal fitting 1 has the configuration as described above, and includes the opening 21 of the cylindrical fastening member 2, the circular hole 31 of the metal fitting body 3, and the hole of the fixing object W. Since the positions of H are aligned in advance, if the rod-shaped connector B is inserted downward from the opening 21 of the installed cylindrical fastening member 2, it will shift from the center of the hole H of the fixed object W. It can be inserted without any trouble. By curing the adhesive in this state, the rod-shaped connector B can be easily fixed at the center of the hole H of the object W to be fixed. Further, in the joining method of the present invention, the rod-shaped joining tool B is inserted into the opening 21 of the cylindrical fastening member 2, and the head b1 and the cylindrical fastening member 2 are brought into vertical contact and fixed. Therefore, there is no need to use a locking device (double nut or spring washer) to prevent the nut from loosening. As described above, the joining method of the present invention can solve all the above-mentioned conventional problems, has excellent workability, and can also suppress construction costs.

As described above, according to the fixing fitting and joining method of the present invention, for example, in GIR joining for wood or chemical anchor (registered trademark) joining for concrete, the object to be fixed (for example, a wooden It is possible to easily determine whether or not the inside of a hole in a hole (or concrete) is filled with adhesive.

The fixture and joining method of the present invention are not limited to the above embodiments.

1 Fixing fitting 2 Cylindrical fastening member 21 Opening 22 Notch groove 3 Fitting main body B Rod-shaped connector b1 Head G Adhesive H Hole W Fixed object

Claims (5)

a cylindrical fastening member with an opening in the center;
A metal fitting body including a flat plate portion with a circular hole;
including;
The cylindrical fastening member is provided with a notched groove at one end,
The one end of the cylindrical fastening member and one surface of the flat plate portion are fixed at a position where the opening and the circular hole overlap, and the opening and the cylindrical fastening are connected to each other through the notch groove. A fixture that communicates with the outside of the member. The fixture according to claim 1, wherein the cylindrical fastening member is a nut, and the notched groove is provided at one end in the axial direction. A method of joining a fixing object, the fixing fitting according to claim 1, and a rod-shaped joining tool, comprising:
The following steps:
A first step of injecting adhesive into the hole provided in the object to be fixed;
The other surface of the flat plate portion of the fixing fitting is brought into contact with the periphery of the hole, and the opening of the cylindrical fastening member, the circular hole of the fitting main body, and the hole of the fixing object are The second step of matching the positions;
The rod-shaped connector is inserted into the hole of the object to be fixed through the opening of the cylindrical fastening member and the circular hole of the metal fitting body, and the adhesive is used to connect the rod-shaped connector and the object to be fixed. A joining method including a third step of fixing. 3. The third step includes determining whether or not the hole is filled with the adhesive based on the presence or absence of the adhesive flowing outward from the notch groove of the cylindrical fastening member. joining method. The rod-shaped connector has a head,
5. The method according to claim 3, wherein in the third step, when the rod-shaped connector is inserted to a predetermined depth in the hole of the object to be fixed, the head and the cylindrical fastening member abut vertically. Joining method.

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