KR20140000951U - Set anchor - Google Patents

Abstract

The set anchor is started. The disclosed set anchor includes a threaded portion 26 having the same diameter as a cylindrical shape and having a predetermined length thread 28 formed on the outer peripheral surface thereof, a protruding protrusion 30 protruding from one end of the threaded portion 26 in the direction of the threaded portion 26, A conical groove 22 formed at the other end opposite to the threaded portion 26 and a body 12 including at least four cutting portions 24 on the outer circumferential surface of the conical groove 22; An expanding member (14) inserted into the conical groove (22) of the body (12); And a nut 20. The expanding member 14 is pushed into the inside of the conical groove 22 so that the body 12 is inserted into the inside of the conical groove 22, A support plate portion 15 for supporting the head portion 13 and a neck portion 17 for connecting the head portion 13 and the support plate portion 15 . Therefore, the cost of the set anchor can be reduced, and the installation work can be simplified, thereby reducing the work flow.

Description

Set anchor {SET ANCHOR}

The present invention relates to a set anchor, and more particularly, to a set anchor which is simple in construction and easy to install.

Anchors are used in a variety of applications such as construction work, construction work, electric work, sanitary work, air conditioning work, manipulation work, signboard work, and machine installation work. Particularly, set anchors are used when the strength of pullout strength is highly required.

Typically, the set anchor is composed of a body, a pipe, a washer, and a nut. The outer diameter and the diameter of the pipe are adjusted by a hammer drill to a floor, a ceiling or a wall made mainly of brick or concrete, After inserting the anchor and inserting the pipe into the outer circumference of the set anchor, the rear end of the pipe is expanded by the taper of the body and fixed in the installation hole.

As a method for fixing the pipe to the set anchor body in the installation hole, a pipe price system, a nut fastening system or a body price system is generally used. A detailed description of such conventional technology is disclosed in Registration Utility Model No. 0280740 .

However, in any of the prior art set anchors, a pipe inserted into the outer circumferential surface of the body is an essential component, and if it is not used, the set anchor can not be fixed in the installation hole.

Further, in the installation work, in the case of the pipe pricing method, the installation hole is drilled with a drill, the body is inserted into the installation hole, the pipe is further inserted into the body, and a special tool for fixing the pipe is inserted , A process of installing a set anchor at a price of a special tool for fixing a pipe, and then removing a dedicated tool for fixing the pipe, which is disadvantageous in that the installation is troublesome and the work takes a long time. The disadvantages are that it takes a lot of work time because the nut must be strongly tightened in order to install the pipe in the nut tightening method or the body pricing method instead of the pipe pricing method.

Further, in the conventional set anchor, there is an inconvenience that the diameter and the depth of the installation hole formed in the brick or concrete wall must be precisely adjusted to the length or diameter of the set anchor. If the depth of the installation hole is not sufficient, the pipe may not be completely inserted into the installation hole, so that the pipe may protrude out of the wall even after the installation. If the depth of the installation hole is too deep, There is a case where the tool can not be inserted sufficiently to contact the pipe. There is a possibility that the pipe can not be inserted into the installation hole even if the diameter is not matched. If the installation hole is too deep, it is re-inserted.

[Technical Literature]

1. Utility Model Registration No. 0280740

2. Patent Publication No. 10-2007-0077512

3. Patent Registration No. 0644231

4. Utility Model Publication No. 20-2012-0002534

5. Patent Registration No. 0994846

SUMMARY OF THE INVENTION An object of the present invention is to provide a set anchor which is simple in construction and easy to install by eliminating pipes.

The set anchor according to the purpose of the present invention described above includes a thread portion 26 having a cylindrical shape and having the same diameter and having a predetermined length thread 28 formed on the outer circumferential surface thereof and a projection 26 projecting at one end in the direction of the thread portion 26 A body 12 having at least four cutting portions 24 on the outer circumferential surface of the conical groove 22, ; An expanding member (14) inserted into the conical groove (22) of the body (12); And a nut 20. The expanding member 14 is pushed into the inside of the conical groove 22 so that the body 12 is inserted into the inside of the conical groove 22, A support plate portion 15 for supporting the head portion 13 and a neck portion 17 for connecting the head portion 13 and the support plate portion 15 .

A plurality of locking protrusions 140 may be formed on the inner wall of the conical groove 22 to prevent the expansion member 14 from slipping out of the conical groove.

The set anchor of the present invention as described above can be easily assembled into the set anchor 10 by simply inserting the set anchor 10 into the mounting hole 36 and pricing the protruding jaw 30 after the mounting hole 36 is formed. In addition, since the set anchor can be installed only by simply tightening the nut after installing the body in the mounting hole with the iron plate, nut and washer mounted on the body of the set anchor (in the past, The nut and washer must be detached from the body, the steel plate must be fitted on the body, and the nut and washer must be mounted again), the set anchor installation work flow is reduced and the overall installation time There is a shortening effect.

In addition, the set anchor of the present invention has the effect of reducing the cost of the set anchor itself by simply removing the pipe, which was a necessary component in the prior art.

1 is an exploded perspective view of a set anchor according to an embodiment of the present invention,
Fig. 2 is a cross-sectional view of the set anchor in the longitudinal direction when the set anchor of Fig. 1 is inserted into the concrete wall,
Fig. 3 is a cross-sectional view of a set anchor installed on a concrete wall with a protruding jaw of the set anchor shown in Fig. 2 as a hammer,
4 is a set anchor according to another embodiment of the present invention, in which only one end of the body of the set anchor is cut and shown.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention, and that specific embodiments are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the appended claims are not intended to limit the invention to the particular embodiments, but to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an exploded perspective view showing the set anchor 10 separated by each component according to an embodiment of the present invention. Fig. 2 is a sectional view of the set anchor 10 shown in Fig. 1 in a state where the set anchor 10 is inserted into a concrete wall 34 3 is a cross-sectional view of the set anchor 10 cut in the longitudinal direction. Fig. 3 is a cross-sectional view of the set anchor 10 installed on the concrete wall 34 by pricing the protruding jaws 30 of the set anchor 10 shown in Fig. The washers 16 and 18, and the nut 20. Fig.

1, the set anchor 10 of the first embodiment is composed of a body 12, an expanding member 14, a flat washer 16, a spring washer 18, and a nut 20. As shown in Fig. The set anchor 10 of the present invention has no pipe fitted to the outer periphery of the body 12 unlike the prior art.

The body 12 has a cylindrical shape with a constant diameter. A portion of the outer circumferential surface has a thread portion 26 formed with a thread 28, and the other outer circumferential surface has no thread. A projection 30 is provided at an end of the thread 28 in the direction in which the thread 28 is formed. The protruding jaw 30 is in the shape of a cylinder having a diameter smaller than the diameter of the body 12. The protruding jaw 30 is a portion for striking with the hammer when the set anchor 10 is installed. A conical groove 22 formed in a conical shape inside the body 12 is formed at the opposite end of the threaded portion 26. On the outer circumferential surface of the body 12 where the conical groove 22 is formed, four cutting portions 24 are formed in the circumferential direction of the body 12. Four cutting portions 24 are formed on the outer circumferential surface of the body 12 at intervals of 90 degrees. However, the cutting portions 24 may be formed according to the diameter of the body 12. That is, it is preferable to increase the number of the cutting portions 24 as the diameter increases. The cutting portion 24 penetrates the conical groove 22 and is preferably formed longer than the depth of the conical groove 22. One cutting portion 24 penetrates the opposite cutting portion formed diagonally therefrom. Therefore, the body of the present embodiment in which four cutting portions 24 are formed is seen in a cross shape when viewed from the end where the conical groove 22 is formed. 1, a cutting portion 25 is provided at an end of the body 12, and the cutting portion 25 is a portion where the outer surface is cut to reduce the thickness of the outer peripheral surface of the end portion of the body. The end of the body 12 is easily curled inward by the cutting portion 25 when the body 12 is inside the installation hole (see FIG. 2), and the head 13 of the expanding member 14 Wrapped around. Referring to FIG. 1, a plurality of grooves 19 are formed in the circumferential direction in the head portion. The grooves 19 increase the frictional force between the head portion 13 and the inner wall of the body 12 and prevent the head portion 13 mounted on the conical groove 22 from easily falling out of the conical groove 22. For reference purposes, the grooves 19 are omitted from the sectional views of FIGS. 2 to 4 for convenience of explanation.

1 and 2, the expanding member 14 is inserted into the conical groove 22 and can be divided into a head portion 13, a neck portion 17, and a support plate portion 15. [ The diameter of the head portion 13 is slightly smaller than the diameter of the body 12 and is inserted into the conical groove 22 as shown in Fig. The head portion 13 has a spherical shape such as a steel ball and the support plate portion 15 is formed in a disk shape so as to be well supported without penetrating into the concrete when the body 12 is hit. The neck portion (17) has a cylindrical shape with a small diameter. It is preferable that the expanding member 14 has higher strength and hardness than the strength and hardness of the body 12.

Since the flat washer 16, the spring washer 18, and the nut 20 have the same structure as the conventional art, detailed description will be omitted.

Hereinafter, the process of installing the set anchor 10 according to the first embodiment of the present invention will be described with reference to Figs. 2 and 3. Fig.

First, a mounting hole 36 is formed in the concrete wall 34 on which the set anchor 10 is to be mounted using a hammer drill. Then, as shown in FIG. 2, the set anchor 10 in a state in which the expanding member 14 is assembled Into the installation hole (36). The set anchor of the present invention does not need to separate the flat washer 16, the spring washer 18 and the nut 20 from the body 12. In the state where the iron plate 21 is installed as shown in FIG. 2, . When the body 12 is inserted into the mounting hole 36, the supporting plate 15 is brought into contact with the deep end of the mounting hole 36 in the mounting hole 36, as shown in FIG.

2, when the set anchor body 10 is inserted into the mounting hole 36 at a price using a hammer or a hammer, the cut anchor body 10 is inserted into the cutting portion 24 As shown in Fig. 3, the end portion of the body 12, which is worn by the head portion 13, is pushed into and covers the head portion 13. The expanding member 14 mounted on the conical groove 22 relatively to the pushing body 12 is pushed up in the direction of the vertex 23 of the conical groove 22. That is, the end of the body 12, which is thinned by the cutting portion 25, is raised by the head portion 13 pushed into the inside of the body 12 and strikes against the support plate 15, As shown in FIG. 3, while bending toward the center portion, the head portion 13 is bent and bent inward. The head portion 13 which is pushed up in the direction of the vertex 23 of the conical groove 22 expands the body 12 in the circumferential direction and the body 12 is provided with an expansion portion And the expansion portion 40 is tightly fixed to the inner wall of the installation hole 36 while pressing the inner wall concrete of the installation hole 36. [

Then, when the nut 20 is tightened, the installation process is completed simply.

It is not necessary to additionally insert a special tool for fixing the pipe to the outer peripheral surface of the set anchor body 12 into the body 12, The set anchor 10 can be easily installed only by inserting the set anchor 10 into the mounting hole 36 and pricing the protruding jaws 30 to shorten the installation time, The cost of the set anchor itself can be reduced. In addition, there is little possibility that the diameter of the mounting hole 36 is small and an error such as a special tool for fixing a pipe is not inserted.

In addition, since the present invention is only required to insert the nut 12 and the washer as well as the body 12 into the mounting hole 36 with the iron plate mounted thereon, it is necessary to install the set anchor and insert the steel plate or nut again There is no sense.

4 shows a second embodiment of the present invention. A flat washer, a spring washer, and a nut, which are the same as those of the first embodiment described above, are omitted, and the configuration of the body anchor 10 Only one end is shown.

The second embodiment differs from the first embodiment in that a plurality of locking protrusions 140 are formed on the inner wall of the conical groove 122, and the rest of the configuration is the same. The engaging protrusion 140 is formed in a pointed shape inclined toward the vertex 123 of the conical groove 122. The engaging protrusion 140 easily slides in the direction of the vertex 123 of the conical groove 122 but prevents the expanding member 14 from sliding in the opposite direction. The engaging protrusion 140 is also engaged with the groove 19 (see FIG. 1) of the expanding member 14, thereby further increasing the frictional force. An unexplained reference numeral 124 denotes a cutting portion.

It will be understood by those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as set forth in the appended claims. .

10: Set anchor
12: Body
13:
14: member of expansion member
15:
22: cone groove
24:
30: protruding chin
140: jamming

Claims (2)

A protruding protrusion 30 protruding from one end of the thread 26 in the direction of the thread 26 and a protruding protrusion 28 protruding from the protruding protrusion 30 in the direction opposite to the thread 26, A body 12 including at least four cutting portions 24 on the outer circumferential surface of the conical groove 22;
An expanding member (14) inserted into the conical groove (22) of the body (12);
And washers (16,18) and nuts (20) fastened to the threaded portion (26),
The expanding member (14)
A head portion 13 pushed into the conical groove 22 to expand the body 12, a support plate portion 15 for supporting the head portion 13, and the head portion 13 and Set anchor, characterized in that consisting of a neck 17 for connecting the support plate 15.
The method of claim 1,
Set anchor, characterized in that the inner wall of the conical groove 22, a plurality of engaging projections (140) formed to prevent the expansion member (14) slip out of the conical groove.

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