JP2778811B2 - anchor - Google Patents

Description

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

[Prior Art] Conventionally, as an anchor of this type, for example, there is one shown in FIG. 5, and this anchor has a tubular main body 31 whose upper and lower ends are open. A reduced diameter portion 32 is formed inside the cylinder main body 31, and a plurality of cut pieces 37 are formed by making cuts in the lower half of the cylinder main body 31. For this reason, after the tube main body 31 is buried in the foundation A, the reduced diameter portion 32
When the pin 33 is driven into the base A, the plurality of cut pieces 37 can be expanded outwardly and locked to the foundation A.

[Problems to be Solved by the Invention] However, in the conventional technique, when the strength of the cut piece 37 is not sufficient and a large tensile force acts on the anchor upward, the expanded cut piece 37 is reduced in diameter. And
As a result, there is play between the anchor and the foundation A,
There was a possibility that the anchor would come off from the foundation A.

The present invention has been made in view of the above-described circumstances, and its purpose is to hold the cut pieces in an expanded state, to prevent rattling or falling off with a foundation or the like,
An object of the present invention is to provide an anchor which can be firmly locked to a foundation or the like.

Means for Solving the Problems In order to achieve the above object, a first aspect of the present invention is to form a plurality of cuts extending in the axial direction on one side of a cylindrical body, and to form a reduced diameter portion on an inner surface of the cylindrical body. Forming an incision piece formed by incision outwardly by driving a pin into a reduced diameter portion of the cylinder main body to lock the buried cylinder main body. A storage body is disposed inside the cylindrical body having the pieces formed therein, and when the storage body is broken by the driving of the pins, the cut piece is held in an expanded state in the storage body. The gist is the anchor containing the holding material.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the holding material is an adhesive that is composed of a main agent and a curing agent and reacts by mixing. These main agents and the curing agent are contained in the housing. The gist is an anchor separately housed in the partitioned space.

[Operation] In the first invention, when the pin is driven into the buried cylinder main body, the cut piece expands outward at the reduced diameter portion of the cylinder main body. Further, at this time, the storage body disposed in the cylinder main body is broken by the driving of the pins. Then, the holding material in the storage body reacts due to the destruction of the storage body, and the cut piece is held in an expanded state.

In the second aspect, when the housing is broken by driving the pins, the main agent and the curing agent in the housing are mixed and reacted, and as a result, the plurality of cut pieces are adhered to the buried portion.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a front view of a tubular main body 1 constituting a part of the anchor, and FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. The cylindrical body 1 has a vertically long cylindrical shape with both upper and lower ends open, and an upper portion thereof is cut with a male screw 2. A plurality of (four in this embodiment) cuts 3 extending parallel to each other along the axis L are formed in the lower portion of the cylinder main body 1, and cut pieces 4 are formed between the adjacent cuts 3. ing. A reduced diameter portion 5 having a smaller diameter than other portions is formed in a portion corresponding to an upper end portion of the notch 3 in the cylinder main body 1.

Immediately below the reduced diameter portion 5 in the cylinder body 1, a vertically long synthetic resin housing 6 is provided. Storage body 6
Is partitioned into four spaces by a partition wall 7.
The opposing spaces are filled with a main agent 8 of an adhesive, and a pair of adjacent spaces are filled with a curing agent 9 of an adhesive. When the main agent 8 and the hardener 9 are mixed, they react and harden at room temperature to exert an adhesive action, and they constitute a holding material for holding the cut piece 4 in an expanded state.

As the adhesive, for example, an epoxy resin-based adhesive,
Acrylic adhesives, polyurethane adhesives and the like are suitable. For example, in the case of an epoxy resin adhesive, a bisphenol epoxy resin, a novolak epoxy resin or the like is used as the main agent 8 and an aliphatic polyamine or aromatic is used as the curing agent 9. Polyamine, polyamide and the like can be used.

When the cylinder body 1 is used, the pin 10 is driven. As shown in FIG. 4, the pin 10 has a rod shape having a diameter slightly smaller than the inner diameter of the cylindrical main body 1, and the lower end thereof has the housing 6.
Is formed.

When the machinery is installed on the foundation A made of concrete, ALC or the like using the anchor of the present embodiment configured as described above, the following procedure is performed. First, prior to the installation work, a hole H into which the tube main body 1 can be inserted is formed in the foundation A as shown in FIG. Subsequently, the machinery is set at a predetermined position on the foundation A and the cylinder main body 1 is inserted into the hole H.
In this state, the male screw 2 of the cylinder main body 1 projects from the foundation A.

Then, as shown in FIG. 3, the pin 10 is inserted into the cylinder main body 1 and the passage is hit with a hammer or the like. When the pin 10 is driven in this manner, the reduced diameter portion 5 is formed in the cylinder main body 1, so that the lower end of the pin 10 pushes and expands the reduced diameter portion 5. As a result, each cut piece 4 expands outward while expanding the lower portion of the hole H.

At this time, the projection 11 at the lower end of the pin 10 hits and breaks the housing 6 immediately below the reduced diameter portion 5. Storage body 6
While the main agent 8 and the curing agent 9 of the adhesive filled inside due to the destruction of
It enters between the expanded cut piece 4 and the foundation A. Then, the main agent 8 and the hardener 9 react and harden by the mixing, and the cut pieces 4 and the base A are bonded. As a result, the expanded state of the cut piece 4 is held by the adhesive, and the anchor is firmly fixed to the foundation A.

In particular, in this embodiment, the inside of the storage body 6 is partitioned into four spaces, and the spaces are filled with the main agent 8 and the curing agent 9 alternately. For this reason, the base agent 8 and the curing agent 9 can be mixed almost uniformly by the destruction of the housing 6, and the adhesive strength can be efficiently exhibited.

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

As described above, in the present embodiment, the plurality of cut pieces 4 are adhered to the foundation A, so that the cut pieces 4 are held in the expanded state. Therefore, the inner wall of the hole H and the hole H
Between the tubular body 1 inserted into the cut piece 4 and the adhesive force of the adhesive, the force of withstanding the tensile force is dramatically improved by a synergistic effect of these. Therefore,
Even if a large tensile force acts on the anchor upward, there is no play between the anchor and the foundation A, and the anchor does not come off from the foundation A. In particular, when the foundation A is cellular concrete, since the adhesive penetrates into the cellular portion, this effect is remarkable.

Note that the present invention is not limited to the configuration of the above-described embodiment. For example, the inside of the storage body 6 may be divided into two, six or more, or a material that expands by reaction as a holding material may be used. It may be arbitrarily changed without departing from the spirit.

Further, the anchor of the present invention can be used for fixing a chair, equipment and the like to a floor, hanging a ceiling, fixing piping to a ceiling, a wall, and the like. In particular, when a pipe or the like is fixed to a wall, the cylinder body 1 is driven substantially horizontally with respect to the wall. Then, a downward force acts on the cylinder main body 1 via the mounting bracket 12 by a pipe or the like, and the tensile force by the pipe or the like is accordingly dispersed. Even in such a case, the anchor is securely held in the buried state by the synergistic effect of the expanding force of the cut pieces 4 and the adhesive force.

[Effect of the Invention] As described in detail above, according to the anchor of the first invention,
The holding material holds the cut pieces in the expanded state, and can prevent rattling between the foundation or the like and the cylinder main body, or the cylinder main body from coming off.

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 a base or the like with an adhesive to firmly lock the tubular main body. .

[Brief description of the drawings]

1 to 4 show an embodiment of the present invention.
FIG. 2 is a front view of the cylinder main body, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, FIG.
The figure is a sectional view showing the state before using the anchor,
FIG. 5 is a sectional view showing the use state of the conventional anchor. 1 ... cylinder body, 3 ... cut, 4 ... cut piece, 5
... Reduced diameter portion, 6... Storage body, 8... Base material constituting a part of the holding material, 9.
… Pin, L …… axis.

Claims (2)

(57) [Claims] 1. A plurality of cuts (3) extending in the direction of the axis (L) are formed on one side of the cylindrical body (1), and a reduced diameter portion (5) is formed on the inner surface of the cylindrical body (1). Then, a notch (4) formed by the notch (3) is expanded outward by driving a pin (10) into the reduced diameter portion (5) of the tube body (1), and the buried tube is buried. In an anchor adapted to lock the main body (1), a storage body (6) is disposed inside a cylindrical main body (1) in which the cut piece (4) is formed, and the storage body (6) is provided inside the storage body (6). Describes that, when the housing (6) is broken by the driving of the pin (10), the holding members (8, 9) for holding the cut pieces (4) in an expanded state in response to the housing (6) are housed. An anchor to feature. 2. The holding material comprises a main agent (8) and a curing agent (9), and is an adhesive which reacts upon mixing. The main agent (8) and the curing agent (9) are attached to the housing ( The anchor according to claim 1, wherein the anchor is separately housed in a space defined inside 6).