KR101252254B1

KR101252254B1 - anchor bolt

Info

Publication number: KR101252254B1
Application number: KR20100131583A
Authority: KR
Inventors: 김종성
Original assignee: 김종성
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2013-04-09
Also published as: KR20120070149A

Abstract

The present invention is to prevent the wear of the thread when hitting the anchor bolt can improve the workability and productability, and can be easily and firmly bound to the anchor bolt in the concrete without flowing even outside impact to improve the binding force An anchor bolt, which is provided so that the front end is fitted into and fixed to a coupling hole formed in a concrete structure, and includes a connection part having a uniform diameter and an extension part extending from the connection part and gradually increasing in diameter to form an inclined surface. The inner member and the receiving groove in which the connecting portion is fitted on one side to form a recess inwards, to form a cutting groove in the longitudinal direction of the receiving groove, the other outer surface includes an outer member for forming a screw, the outer member of the When the inner member is fitted to the receiving groove the receiving groove is extended along the inclined surface of the expansion portion It is fixed to the inner surface of the coupling hole.

Description

Anchor bolt

The present invention relates to anchor bolts, and more particularly, to anchor bolts to be smoothly embedded in concrete, and to anchor bolts that can be securely fixed without moving anchor bolts.

In general, anchor bolts are used to secure a fixed object, such as a flange and steel frame, to a floor, such as a building or furniture, to a concrete wall.

Looking at the operation principle of the conventional anchor bolt, it has a structure in which the bolt is fixed to the anchor hole formed in the wall or the bottom so that the sleeve fitted to the bolt member is opened by the extension of the bolt member. In the conventional anchor bolt type as described above, a type that is directly blown apart by using a separate tool to open the sleeve, and when the nut is fastened to the threaded portion of the bolt member, the bolt is raised, the sleeve is opened by the rise of the bolt member There is a type to lose.

Looking at the use of the first type of anchor bolt, first drill the anchor hole on the floor and wall, insert the sleeve into the extension of the bolt, insert the bolt into the bolt hole, and then use a separate tool such as a hammer. When hitting the sleeve directly by using, the slot portion of the sleeve is opened by the expansion portion of the bolt, the sleeve is in close contact with the inner circumferential surface of the anchor hole so that the bolt does not fall out of the anchor hole.

As described above, the screw part of the fixed bolt is interposed with a washer to insert the object to be fixed and tighten the nut.

However, in the case of the conventional anchor bolt configured as described above, its handling is very difficult because the sleeve is pulled out of the bolt.

In addition, the conventional anchor bolt is damaged by the excessive force applied to the sleeve while hitting the sleeve, the anchor bolt shakes or even falls out of the hole of the concrete after tightening the nut, as well as to use a separate tool to hit the sleeve I have a problem.

In addition, since the separate equipment is used to assemble the sleeve at the end of the bolt, not only the facility cost is increased due to the purchase of the equipment, but also the assemblability is reduced, resulting in an increase in manufacturing cost.

Therefore, the present invention has been made in order to solve the above problems to prevent the wear of the thread when hitting the anchor bolt can improve the workability and productability, if the anchor bolt does not flow to the external impact on concrete The aim is to provide an anchor bolt that can be easily and firmly tied to improve the binding force.

The present invention for achieving the above object is that the front end is fitted into the fixing hole formed in the concrete structure is fixed, the connection portion having a uniform diameter, and the extension is extended with the connecting portion is gradually increased in diameter to form an inclined surface An inner member having a portion and a recess formed in one side of the receiving groove into which the connection part is fitted, forming an incision groove in a longitudinal direction of the receiving groove, and the outer side including an outer member forming a screw portion, When the inner member is fitted in the receiving groove of the member provides an anchor bolt is fixed to the inner surface of the coupling hole while the receiving groove is extended along the inclined surface of the expansion portion.

According to the present invention as described above, since the configuration of the anchor bolt is simple and easy to manufacture, the manufacturing cost is lowered, there is an economic effect.

In addition, unlike the conventional case where the sleeve is inserted around the bolt and hit the sleeve, the sleeve is omitted and the bolt itself is hit to be fixed to the concrete, and even when hitting the anchor bolt, the hit is to be spaced apart from the thread on the hitting surface of the anchor bolt By forming protrusions, the impact of the hammer is concentrated only on the hitting protrusions, and it does not reach the threads, which prevents the wear of the threads, so that the nut or signboard or shelf, etc. can be smoothly bound to the anchor bolt to improve workability and product performance. Can be improved.

In addition, since the size of the hole to be drilled in the concrete wall for the anchor bolt is significantly reduced, the construction is simple, and the shape of the anchor bolt is close to the cylindrical shape so that it is easily fitted into the hole, and the inner diameter of the hole formed in the concrete and the outer diameter of the anchor bolt Therefore, it is possible to maintain a firmly fixed state without being easily shaken by external impacts, thereby greatly improving safety and usability.

1 is an exploded perspective view showing an anchor bolt of the present invention;
Figure 2 is a perspective view of the anchor bolt of the present invention,
3 to 4 is a perspective view showing a state in which the inner member is completely fitted to the outer member,
5 to 6 is a cross-sectional view showing a state of use of the anchor bolt of the present invention.

Hereinafter, the configuration and operation of the anchor bolt of the present invention according to the accompanying drawings in more detail.

1 is an exploded perspective view showing the anchor bolt of the present invention, Figure 2 is a perspective view showing the anchor bolt of the present invention, Figures 3 to 4 is a perspective view showing a state in which the inner member is completely fitted to the outer member, Figures 5 to 6 Is a cross-sectional view showing a state of use of the anchor bolt of the present invention.

Anchor bolt according to the present invention is to be fixed to the front end is fitted to the coupling hole 10 formed in the concrete structure, the connecting portion 111 and the connecting portion 111 having a uniform diameter and the diameter is gradually increased An inner member 110 having an expansion part 113 forming an inclined surface 112 and a receiving groove 121 into which the connection part 111 is fitted are formed at one side inwardly, and the receiving groove 121 is formed. To form the incision groove 122 in the longitudinal direction of, the other outer surface includes an outer member 120 for forming a screw portion 123, the inner member 110 in the receiving groove 121 of the outer member 120. ) Is fitted to the receiving groove 121 is extended along the inclined surface 112 of the expansion 113 is fixed to the inner surface of the coupling hole (10).

First, the inner member 110 includes a connecting portion 111 having a uniform diameter and an extension portion 113 extending from the connecting portion 111 and gradually increasing in diameter to form an inclined surface 112.

The connection part 111 and the expansion part 113 are fitted into the receiving groove 121. When the connecting portion 111 is fitted, the receiving groove 121 does not exhibit a certain shape change such as opening, but when the expansion portion 113 is fitted into the receiving groove 121, the cutting groove 122 of the As the gap opens, the accommodation groove 121 is extended along the inclined surface 112.

The expansion portion 113 takes the shape of a conical or tapered pin that is wider toward the outside.

In addition, the connecting portion 111 of the inner member 110 is made of a cylindrical shape to be easily inserted into the cylindrical receiving groove 121, as well as may take the form of a square, a cone according to the shape of the receiving groove 121. .

The outer diameter of the connecting portion 111 and the inner diameter of the receiving groove 121 may be formed to be the same or similar to each other so that the connecting portion 111 may be inserted into the receiving groove 121.

The outer member 120 has an accommodating groove 121 formed at an end inserted into the coupling hole 10 formed in the concrete structure, and a plurality of incision grooves 122 cut in the longitudinal direction are formed around the accommodating groove 121. Is formed.

In addition, the opposite side of the receiving groove 121, the threaded portion 123 is threaded on the surface is integrally formed on the same axis.

The end of the screw portion 123 serves as a hitting surface hitting with a tool such as a hammer to insert and fix the outer member 120 in the coupling hole 10 of the concrete structure.

Here, the cutting groove 122 of the receiving groove 121 is preferably formed in a straight shape having a uniform interval radially about the axis when viewed in a plane, but may be formed in a variety of shapes, such as a cross.

The connecting portion 111 and the expansion portion 113 of the inner member 110 and the receiving groove 121, the threaded portion 123 of the outer member 120 are formed to form the same or approximate diameter of each other coupling holes of the concrete structure ( Of course, the gap with 10) can be minimized.

According to a preferred embodiment of the present invention, the inner member 110 is further formed with a spaced protrusion 114 to form a step with the expansion 113.

The spacer protrusion 114 prevents the extension portion 113 from contacting the coupling hole 10 formed in the concrete structure.

That is, as shown in FIGS. 4 to 6, the spacer protrusion 114 is brought into contact with the coupling hole 10 before the expansion part 113, and as a result, when the strike of the outer member 120 is made, the accommodation is received. An end of the groove 121 is expanded while surrounding the expansion part 113 and is accommodated in the stepped space provided by the spacer protrusion 114.

Since the receiving groove 121 surrounds the expansion part 113, the coupling hole 10 of the concrete structure is completely sealed by the accommodation groove 121, and the anchor bolt is more securely fixed to the coupling hole 10. Can be.

According to a preferred embodiment of the present invention, the outer member 120 is a blow protrusion 124 for hitting the one side end of the threaded portion 123 is further formed.

And at the end of the screw portion 123 is a blow projection 124 to prevent the screw thread from being crushed in the process of hitting with a tool such as a hammer to insert and fix the outer member 120 in the coupling hole 10 of the concrete structure Formed.

Since the impact projection 124 is formed on the hitting surface of the anchor bolt so as to be spaced apart from the thread, the impact of the hammer is concentrated only on the hitting protrusion 124 and does not fall on the screw thread, thus preventing the wear of the thread. Internal parts such as can be smoothly bound to the anchor bolt can improve the workability and product performance.

According to a preferred embodiment of the present invention, the connecting portion 111 is pressed into the receiving groove 121, the inner member 110 and the outer member 120 is integrally formed.

In general, the inner member 110 and the outer member 120 is kept separated from each other before being used.

According to the present invention, the inner diameter of the accommodating groove 121 and the outer diameter of the connecting portion 111 are set equally or similarly so that the connecting portion 111 of the inner member 110 is the accommodating groove of the outer member 120 even when the anchor bolt is not used. It is possible to maintain the state inserted into the 121 by a predetermined length.

In the above case, since the inner member 110 and the outer member 120 are integrally provided, the storage is easy and there is no need to separately prepare the inner member 110 and the outer member 120 even when it is desired to be used. .

Referring to the operation state of the anchor bolt according to an embodiment of the present invention configured as described above are as follows.

First, inserting the connecting portion 111 of the inner member 110 in the receiving groove 121 of the outer member 120 is inserted into the coupling hole 10 of the concrete structure at the same time, and then hitting projections 124 with a tool such as a hammer When strongly hitting the inner member 110 is inserted along the incision groove 122 by the reaction to expand the receiving groove 121 of the outer member 120.

In this process, the end of the receiving groove 121 can be firmly fixed by digging into the concrete while expanding. On the other hand, the end of the expanded receiving groove 121 is expanded while surrounding the expansion portion 113 may be accommodated in the stepped space provided by the spacer protrusion 114. In the above case, since the receiving groove 121 surrounds the expansion part 113, the coupling hole 10 of the concrete structure is completely sealed by the receiving groove 121, and the outer member 120 is more securely fixed. Can be.

Thereafter, the fixing angle may be inserted into the screw part 123 of the outer member 120 protruding outward from the coupling hole 10 of the concrete structure, and the structure may be installed by fixing with a washer and a nut.

According to the anchor bolt of the present invention as described above, the anchor bolt can be easily fitted in the concrete, can be kept firmly fixed without being easily shaken by external impact can greatly improve safety and usability.

Although the above-described anchor bolt has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: anchor bolt
110: inner member
111: connection
112: slope
113: extension part
114: spaced protrusion
120: outer member
121: receiving home
122: incision groove
123: screw part
124: blow projection

Claims

In the anchor bolt that is fixed to the front end of the coupling hole formed in the concrete structure,
An inner member having a connection part having a uniform diameter and an extension part extending from the connection part and gradually increasing in diameter to form an inclined surface;
Includes an outer side of the receiving groove to be inserted into the connection portion on the one side to form a recessed groove in the longitudinal direction of the receiving groove, the outer side forming a screw portion on the other outer surface;
The inner member is further formed with a separation protrusion forming a step and the expansion step, when the inner member is fitted into the receiving groove of the outer member is fixed to the inner surface of the coupling hole while the receiving groove is extended along the inclined surface of the expansion portion Anchor bolt, characterized in that.

delete

The method of claim 1, wherein the outer member
Anchor bolt, characterized in that the striking projection for hitting further formed on one end of the threaded portion.

The method of claim 1,
The connecting part is pressed into the receiving groove anchor bolt, characterized in that the inner member and the outer member formed integrally.