JPH0473321A - Anchor - Google Patents

Abstract

PURPOSE:To prevent looseness and slipping-off generated between an anchor and a foundation, etc., by breaking a holding material housed in a cylinder body by driving a pin expanding a cut-in piece, reacting and curing adhesives in a buried section and generating adhesive action. CONSTITUTION:A pit H, which can be inserted, of a cylinder body 1 is bored to a foundation A. Machines are installed at specified positions, and the cylinder body 1 is inserted into the pit H. A pin 10 is inserted into the cylinder body 1, the head section of the pin 10 is struck by a hammer, etc., and each cut-in piece 4 is expanded to the outside in conformity with the extension of the lower section of the pit H. At this time, a housing body 6 filled with resin adhesives composed of a main agent and a curing agent is broken by the projecting 11 of the lower end of the pin 10. Adhesives intrude among the cut-in pieces 4 and the foundation A while adhesives leak from the housing body 6 and are mixed, are reacted and cured, and bond both the cut-in pieces and the foundation. Accordingly, the cylinder body 1 can be fixed as a firm anchor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an anchor used when installing machinery on a foundation made of concrete or ALC (lightweight cellular concrete).

[Prior Art] Conventionally, as an anchor of this type, there is one shown in FIG. 5, for example, and this anchor includes a cylindrical body 31 with both upper and lower ends open. A reduced diameter portion 32 is formed inside the cylinder body 31, and a plurality of cut pieces 37 are formed by cutting the lower half of the cylinder body 31. Therefore, after burying the cylinder body 31 in the foundation A,
By driving the pin 33 into the reduced diameter portion 32, each of the plurality of cut pieces 37 can be expanded outward and locked to the foundation A.

[Problems to be Solved by the Invention] However, in the above-mentioned prior art, the strength of the notch piece 37 is not sufficient, and when a large tensile force is applied upward to the anchor, the expanded notch piece 37 contracts. As a result, there was a risk that play would occur between the anchor and the foundation A, or that the anchor would come off from the foundation A.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to maintain the cut piece in an expanded state and prevent it from becoming loose or coming off between it and the foundation, etc. An object of the present invention is to provide an anchor that can be securely locked to, etc.

[Means for Solving the Problems] In order to achieve the above object, the first invention forms a plurality of notches extending in the axial direction on one side of the cylinder body, and a diameter reducing part is formed on the inner surface of the cylinder body. In the anchor, the cut piece formed by the notch is expanded outwardly by driving a pin into the reduced diameter part of the cylinder body, and locks the buried cylinder body. A storage body is arranged inside the cylindrical body in which the cut pieces are formed, and when the storage body is broken by driving the pin into the housing body, the cut pieces are held in an expanded state in response. Its gist is an anchor containing a holding material.

In addition to the structure of the first invention, the second invention is an adhesive that includes a base material and a hardening agent and reacts when mixed, and these base materials and hardening agent are contained in the storage body. The gist is anchors that are stored separately within a compartmentalized space.

[Operation] In the first invention, when a pin is driven into the buried cylinder body, the cut piece expands outward at the reduced diameter portion of the cylinder body. Further, at this time, the housing disposed within the cylinder body is destroyed by driving the pin. When the storage body is destroyed, the holding material inside the storage body reacts and holds the cut pieces in an expanded state.

In the second invention, when the housing is broken by driving a pin, the main agent and hardening agent inside the housing mix and react,
As a result, a plurality of cut pieces are adhered to the buried portion.

``Example'' An example embodying the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a front view of a cylinder body 1 that constitutes a part of the anchor;
FIG. 2 is a cross-sectional view of the enlarged line ``--'' in FIG. 1. This cylinder body 1 has a vertically long cylindrical shape with both upper and lower ends open, and a male thread 2 is cut in the upper part. Further, a plurality of notches 3 (four in this embodiment) extending parallel to each other along the axis are made in the lower part of the cylinder body 1, and a notch piece 4 is formed between the two adjacent notches 3. ing. Cylinder body 1
Inside, a reduced diameter portion 5 having a smaller diameter than other portions is formed at a portion corresponding to the upper end of the notch 3.

Directly below the diameter-reduced portion 5 in the cylinder body 1, a storage body 6 made of synthetic resin and having a vertically elongated shape is disposed. The interior of the storage body 6 is partitioned into four spaces by partition walls 7. Then, the space facing each other is filled with the main agent 8 of the adhesive.
A pair of adjacent spaces are filled with an adhesive curing agent 9. When mixed, the base material 8 and the curing agent 9 react and cure at room temperature to exhibit an adhesive effect, and they constitute a holding material that holds the cut piece 4 in the expanded state.

As the adhesive, for example, an epoxy resin adhesive, an acrylic adhesive, a polyurethane adhesive, etc. are suitable. For example, in the case of an epoxy resin adhesive, the base material 8 may be a bisphenol epoxy resin, a novolac epoxy resin, etc. As the curing agent 9, aliphatic polyamine, aromatic polyamine, polyamide, etc. can be used.

When the cylindrical body 1 is used, a pin 10 is driven into it. As shown in FIG. 4, the pin 10 has a rod shape with a diameter slightly smaller than the inner diameter of the cylinder body 1, and has a protrusion 11 formed at its lower end for breaking the storage body 6.

Using the anchor of this example configured as described above,
When installing machinery on foundation A made of concrete, ALC, etc., follow the steps below.

First, prior to installation, a hole H into which the cylindrical body 1 can be inserted is bored in the foundation A, as shown in FIG. 4.

Next, the machinery is placed at a predetermined position on the foundation A, and the cylinder body 1 is inserted into the hole H. In this state, the male thread 2 of the cylinder body 1 protrudes from the base A.

Then, as shown in FIG. 3, a pin 10 is inserted into the cylinder body 1, and its head is struck with a hammer or the like. When the pin 10 is driven in this way, since the reduced diameter portion 5 is formed within the cylinder body 1, the lower end of the pin 10 pushes the reduced diameter portion 5 out. As a result, each cut piece 4 expands outward while enlarging the lower part of the hole H.

Further, at this time, the protrusion 11 at the lower end of the pin 10 hits the storage body 6 directly below the diameter-reduced portion 5 and breaks it. When the container 6 is destroyed, the main adhesive 8 and hardening agent 9 filled inside the container 6 leak out from the container 6 and mix.
It enters between the expanded cut piece 4 and the foundation A. Then, as a result of the mixing, the main material 8 and the curing agent 9 react and harden, and the cut piece 4 and the base A are bonded together. As a result, the expanded state of the cut piece 4 is maintained by the adhesive, and the anchor is firmly fixed to the foundation A.

In particular, in this example, the interior of the storage body 6 was partitioned into four spaces, and the base agent 8 and the curing agent 9 were alternately filled in these spaces. Therefore, by destroying the storage body 6, the main agent 8 and the curing agent 9 can be mixed almost uniformly, and adhesive strength can be efficiently exhibited.

After the cylinder body 1 is fixed in the hole H as described above, the mounting bracket 12 for machinery is fitted onto the cylinder body l as shown by the two-dot chain line in FIG. Then, by tightening the nut 13 on the male screw 2, the mounting bracket 12 is connected to the cylinder body 1.

In this way, in this embodiment, a plurality of cut pieces 4 are placed on the base A.
By adhering the notch piece 4 to the opening, the notch piece 4 is held in the expanded state. Therefore, the expansion force of the cut piece 4 and the adhesive force of the adhesive act between the inner wall of the hole H and the cylinder body 1 inserted into the hole H, and the synergistic effect of these acts to withstand the tensile force. Power increases dramatically. Therefore, even if a large upward tensile force is applied to the anchor,
There will be no play between the anchor and the foundation A, and the anchor will not be pulled out from the foundation A.

In particular, when the foundation A is made of cellular concrete, this effect is remarkable because the adhesive penetrates into the cellular parts.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments. For example, the inside of the storage body 6 may be partitioned into two or six or more parts, or a material that expands by reaction may be used as a holding material. Any changes may be made without departing from the spirit.

Furthermore, the anchor of the present invention can be used for fixing chairs, equipment, etc. to the floor, for hanging ceilings, for fixing piping to ceilings, walls, etc.

Particularly, when fixing piping or the like to a wall, the cylinder body 1 is driven into the wall in a substantially horizontal direction. Then, a downward force is applied to the cylinder body 1 by the piping etc. via the fitting 12, and the tensile force due to the piping etc. is dispersed accordingly. Even in such a case, the anchor is reliably held in the buried state due to the synergistic effect of the spreading force of the cut piece 4 and the adhesive force.

[Effects of the Invention] As detailed above, according to the anchor of the first invention, the retaining material holds the cut piece in the expanded state, and there is no play between the foundation etc. and the cylinder body, or the same cylinder body. It can prevent the main body from coming out.

Further, according to the anchor of the second invention, in addition to the effect of the first invention, the expanded cut piece can be adhered to the foundation etc. with adhesive to firmly lock the cylinder body. .

[Brief explanation of drawings]

1 to 4 show one embodiment embodying the present invention, and the first
The figure is a front view of the cylinder body, Figure 2 is an enlarged sectional view taken along the line ■-■ in Figure 1, Figure 3 is a sectional view showing how the anchor is used, and Figure 4
The figure is a sectional view showing the state before using the anchor.
FIG. 5 is a sectional view showing a conventional anchor in use. DESCRIPTION OF SYMBOLS 1... Cylinder body, 3... Notch, 4... Notch piece, 5... Reduced diameter part, 6... Storage body, 8... Main agent constituting a part of holding material, 9 ...Hardening agent constituting a part of the holding material, 10...Pin, L...Axle line. Patent applicant: Omi Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A plurality of notches (3) extending in the axis (L) direction are formed in one side of the cylinder body (1), and the cylinder body (1
), and by driving a pin (10) into the reduced diameter part (5) of the cylinder body (1), a cut piece (4) formed by the cut (3) is formed. In the anchor, which expands outward and locks the buried tube body (1), the storage body (6) is placed inside the tube body (1) in which the cut piece (4) is formed. and in the storage body (6), when the storage body (6) is broken by driving the pin (10), the notch piece (4) is held in an expanded state in response. An anchor characterized in that a holding material (8, 9) is accommodated. 2. The holding material is an adhesive that is composed of a base material (8) and a curing agent (9), and reacts when mixed, and these base materials (8)
) and the hardening agent (9) are separately stored in a space defined within the storage body (6).