WO2017065406A1

WO2017065406A1 - One-touch type rebar coupler

Info

Publication number: WO2017065406A1
Application number: PCT/KR2016/009691
Authority: WO
Inventors: 하재식
Original assignee: 아이쓰리(주)
Priority date: 2015-10-13
Filing date: 2016-08-31
Publication date: 2017-04-20
Also published as: KR101602399B1

Abstract

The present invention comprises: a pair of coupler bodies which are coupled to each other, have both ends which are opened so that a rebar is inserted thereinto, and have a slope of which the inner diameter is gradually reduced as it goes toward the inlet side; a support plate which is fixed between the insides of the coupler bodies; a coupling part which is provided on the slope of the coupler bodies and is formed of a plurality of unit members which are divided along the circumference; an insertion member which is positioned on the inner circumferential surface of the coupler part so as to maintain the inner space of the coupling part; an interval-maintaining member which protrudes at a certain interval from the outside of the insertion member so as to maintain the interval between the unit members; an O-ring which surrounds the outside of the coupling part; and a spring which is provided between the support plate and the coupling part so as to elastically press the coupling part. Thus, at the same time the insertion member and the interval-maintaining member are separated from the coupling part by means of the insertion of the rebar, an elastic pressing force is applied to the spring so as to move the coupling part toward the inlet side along the slope and compress the outer circumferential surface of the rebar.

Description

One touch rebar coupler

The present invention relates to a one-touch rebar coupler, and a technique for a one-touch rebar coupler that can be firmly connected between the rebar and the rebar.

Reinforcing bars are used as the internal skeleton of concrete structures in construction and civil engineering. Since rebars are standardly manufactured to a certain length, they should be used to fit the length of the structure by jointing the rebars according to the length of the structure.

Butt joints and overlapping joints are often used for reinforcing bars. Rebar butt joints have been longitudinally joined by welding, and rebar overlap joints have been superimposed on wires.

Recently, rebar couplers, which are parts that connect steel bars to each other, have been developed to reduce such troubles.

One of the conventional rebar coupler is disclosed in Korean Patent Laid-Open No. 10-2013-0061158 (2013.06.10).

Figure 1 shows a conventional reinforcing coupler, is coupled to the receiving groove of the pair of coupling case 10 is provided on one side of the fastening member 20 and the fastening member to be fixed in close contact with the outer surface of the connection material (M) It is configured to include a support member 40 is coupled between the elastic member 30 and the elastic member for applying an elastic force in one direction to the member.

Looking at the operation process of the conventional reinforcing bar coupler is formed with a receiving groove inside the coupling case guides the space that the fastening member can slide by the receiving groove. At this time, the receiving groove is formed to be inclined so that when the connecting material (M) is inserted, the fastening member 20 moves in the direction of the support member 40 to secure the insertion space. Move to the inlet of the case 10 is to be fixed in close contact with the rebar.

However, the conventional rebar coupler fixing method requires a processing groove so that the fastening member can be stably moved inside the coupling case, which takes a lot of processing time and is difficult, and also has fastening members in each of the receiving grooves along the circumference of the coupling case. There is a problem in that it is difficult to fix the fastening member located on the upper side.

In addition, there has been a problem that the play is generated left and right even after the connection material is fixed to the fastening member.

The present invention has been made to solve the above problems, to provide a one-touch rebar coupler to facilitate the connection of the reinforcing bar and coupler by one-touch pressure of the reinforcing bar, and also to ensure that the coupling of the reinforcing bar and coupler firmly The purpose is.

In order to achieve the above object, the present invention is coupled to each other, both ends are open, the reinforcement is inserted, the pair of coupler body formed with a sloped surface is gradually reduced in diameter toward the inlet side; A support plate fixed between the interior of the coupler body; A fastening part provided on an inclined surface of the coupler body and formed of a unit member divided into a plurality of parts along a circumference to accommodate and fasten the rebar; An insertion hole positioned on an inner circumferential surface of the fastening part to maintain an inner space of the fastening part; and a spacing maintenance hole formed to protrude at a predetermined interval outside the insertion hole to maintain a gap between the unit member and the unit member; An O-ring surrounding the outside of the fastening part; And a spring provided between the support plate and the fastening part to elastically press the fastening part. The insertion part and the spacing retaining part are separated from the fastening part by insertion of the reinforcing bar, and the fastening part is connected to the spring. An elastic pressing force is applied to move to the inlet side along the inclined surface to compress the outer circumferential surface of the reinforcing bar.

The fastening portion is formed with a groove in which the O-ring is seated along an outer circumferential surface, and a tooth shape in close contact with the reinforcing bar outer circumference is formed on the inner circumferential surface.

The insertion port is characterized in that the arc-shaped grooves are formed in each of the outer surface between the spacing holding sphere to exclude the interference with the fastening portion.

According to the present invention of the configuration described above, the following effects can be expected.

When the reinforcing bar is inserted into the coupler body and pushes the spacing retaining part, the fastening part retained in shape by the spacing part is elastically pressurized to the inlet side of the coupler body by the spring and is fastened to the reinforcing bar. Can be combined in one touch.

And, since the spring is pressed in one direction of the fastening portion, the play of the reinforcing bar coupled to the coupler body is small and can be firmly coupled.

1 is an exemplary view of a rebar coupler according to the prior art.

Figure 2 is a one-touch rebar coupler internal configuration according to an embodiment of the present invention.

3 is a cross-sectional view taken along line AA ′ of FIG. 2;

Figure 4 is an example of a fastening state.

Figure 5 is an internal configuration showing a combination of one-touch rebar coupler and rebar according to an embodiment of the present invention.

FIG. 6 is another exemplary cross-sectional view of the insertion hole of FIG. 3. FIG.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is an internal configuration of the one-touch rebar coupler according to an embodiment of the present invention.

Referring to Figure 2, the present inventors one-touch reinforcement coupler is largely the configuration of the coupler body (100a, b), the support plate 200, fastening portion 300, the insertion hole 420, the spacing holder (440, Figure 3), It consists of an O-ring 500 and a spring 600.

The

coupler bodies

100a and 100b correspond to the appearance cases of the present invention, and both ends are opened so that reinforcing bars are inserted therein.

The coupler bodies (100a, 100b) is made of a pair to be fastened to each other, the left coupler body (100a) and the right coupler body (100b) is threaded on the side facing each other male and male are screwed together to be coupled to each other do.

And, each of the coupler body (100a, 100b) is formed with an inclined surface to gradually reduce the inner diameter toward the inlet side where the reinforcing bar is introduced therein.

Singgi base plate 200 is fixed between the interior of the coupler body (100a, 100b) to partition the interior to limit the reinforcement range, and at the same time the spring located inside the coupler body (100a, 100b) 600 can be elastically supported.

The support plate 200 may be positioned between the

coupler bodies

100a and 100b to maintain a fixed state therein by fastening the coupler bodies.

The fastening part 300 is a main part that can be fastened by adhesion by receiving reinforcing bars inserted into the

coupler bodies

100a and 100b.

The fastening part 300 may be provided at a position corresponding to the inside of the coupler body, that is, an inclined surface, and may be formed of a unit member divided into a plurality of parts along the circumference to accommodate and fasten the reinforcing bars.

Here, the fastening part 300 is formed with a groove 340 in which the O-ring is seated along the outer circumferential surface, and a tooth 320 that is in close contact with the outer circumference of the reinforcement is formed on the inner circumferential surface.

Since the fastening part 300 is formed of a plurality of unit members, the insertion hole 420 and the gap maintaining hole 440 (FIG. 3) and the O-ring 500 are required to maintain one shape.

The insertion hole 420 is inserted at the end of the fastening part so as to be located inside, and secures an internal space of the fastening part 300.

In addition, the spacer 440 (FIG. 3) is positioned between the unit member and the unit member of the fastening part to maintain the gap between the unit members to maintain the overall shape of the fastening part, which will be described below.

The O-ring 500 surrounds the outer side of the fastening part to prevent the divided unit member from being separated outward.

Herein, the insertion part 420 is provided inside the fastening part 300, and the spacing holder 440 (FIG. 3) is provided between the unit members of the fastening part, and an O-ring (outer side) of the fastening part 300 is provided. 500 to be combined to be wrapped to form a set to be inserted into the inclined surface of the coupler body.

Here, the coupler body inner inclined surface is in the form of the diameter decreases toward the inlet side so that the set is spanned and pressed by the spring 600 is inserted to a certain portion.

The spring 600 is elastically supported with respect to the support part to provide an elastic pressing force against the fastening part 300.

In the present invention, the spring 600 is formed in the form of a coil spring to provide an elastic pressing force to the fastening portion 300 is in close contact with the end of the fastening portion 300.

The spring 600 is provided between the support plate 200 and the fastening part 300 in more detail to elastically press the fastening part 300.

When the reinforcing bar is inserted at the inlet side of the coupler body and presses the insertion hole, the insertion hole is separated from the fastening part and the gap retaining protrusion protruding from the insertion hole maintaining the shape of the fastening part is also separated. Will be released.

At this time, the spring 600 may be moved to the inlet side along the inclined surface of the coupler body by the elastic pressing force to reduce the inner diameter according to the inclined surface so that each of the unit members of the fastening portion can be compressed to the outer peripheral surface of the reinforcing bar Will be.

The elastic pressing action of the spring 600 will be described in FIG. 4 below.

3 is a cross-sectional view taken along line AA ′ of FIG. 2.

Referring to Figure 3, the insertion hole 420 is located on the inner peripheral surface of the fastening portion 300 to maintain the internal space of the fastening portion 300 to maintain the minimum inner diameter of the fastening portion 300, the insertion hole ( 420 is formed to protrude to the outside at a predetermined interval is composed of a spacing holder 440 to maintain a gap between the unit member (300a) and the unit member (300a).

The spacing holder 440 is formed in the shape of a bar (bar) is formed in the longitudinal direction at a predetermined angle along the outer circumferential surface of the insertion hole 420, in the present invention, the spacing is maintained at 90 degrees Four unit members 300a of the fastening part 300 were installed between the spheres 440.

The spacing holder 440 is formed in a number corresponding to the unit member 300a, and two or more spaces are sufficient and three to four are suitable.

4 is an exemplary view of a fastening part state.

Figure 4 (a) is a state diagram in which the inner diameter is expanded by the fastening portion insertion hole and the spacing retaining hole, Figure 4 (b) is a state diagram in which the inner diameter of the fastening portion is reduced by the separation of the insertion hole and the spacing retaining hole.

In FIG. 4 (a), when the insertion hole 420 and the gap maintaining hole 440 are coupled to the fastening part 300, the unit members 300a are spaced apart from each other. In FIG. As the insertion hole 420 and the spacing holder 440 are separated from the fastening part 300, both sides of the unit members 300a may be in close contact with each other, thereby being in close contact with the outer circumferential surface of the rebar.

Referring to Figure 5, the reinforcing bar 10 is inserted into the coupler body (100a) inlet to pass through the interior of the fastening portion 300, and if further inserted into the fastening portion 300 by pressing the insertion hole 420 closely Depart from

At this time, when the insertion port and the gap retaining hole maintaining the shape of the fastening part 300 are separated by pressure on the rebar, the fastening part 300 is moved toward the inlet side along the inclined surface of the coupler body by the elastic pressing force of the spring 600. Done. Since the inner cross-sectional area is reduced toward the inlet side, the unit member of the fastening part 300 is finally made close to the outer peripheral surface of the fastening is made.

In addition, since the fastening part 300 is operated by the elastic force by the spring 600, since the change in the position of the fastening part 300 is reduced, the play of the rebar fixed to the fastening part can be minimized.

6 is another exemplary cross-sectional view of the insertion hole of FIG. 3.

In FIG. 3, the insertion hole 420 has a cylindrical shape, but in FIG. 6, the insertion hole 420 has an arc-shaped groove 422 formed on each of the outer surfaces between the spacer 440 so that the fastening part and It is characterized by excluding the interference to facilitate the separation by inserting the insertion hole 420 and pressing of the reinforcing bar inside the fastening portion.

As described above, it can be seen that the present invention provides the basic technical idea of providing a one-touch rebar coupler, and within the scope of the basic idea of the present invention, many others have ordinary skill in the art. Of course, variations are possible.

The present invention relates to a one-touch rebar coupler, and can be used in the field of one-touch rebar coupler that can firmly connect between rebar and rebar.

Claims

A pair of coupler bodies each having an inclined surface which is fastened to each other, both ends of which are opened to insert rebars, and whose inner diameter is gradually reduced toward the inlet side;

A support plate fixed between the interior of the coupler body;

A fastening part provided on an inclined surface of the coupler body and formed of a unit member divided into a plurality of parts along a circumference to accommodate and fasten the rebar;

An insertion hole positioned on an inner circumferential surface of the fastening part to maintain an inner space of the fastening part;

A spacing retaining port formed protruding at a predetermined interval outside the insertion port to maintain a gap between the unit member and the unit member;

An O-ring surrounding the outer side of the fastening part; And

And a spring provided between the support plate and the fastening part to elastically press the fastening part.

One-touch, characterized in that the insertion port and the spacing retainer is separated from the fastening portion by the insertion of the reinforcing bar and at the same time the spring is applied with an elastic pressing force to move the fastening portion to the inlet side along the inclined surface to press the outer peripheral surface of the reinforcing bar Rebar coupler.
The method of claim 1,

The fastening portion,

A groove is formed along the outer circumference of the O-ring,

One-touch rebar coupler, characterized in that the tooth is in close contact with the reinforcement outer periphery is formed on the inner peripheral surface.
The method of claim 1,

The insertion hole,

A one-touch rebar coupler, characterized in that an arc-shaped groove is formed on each of the outer side surfaces between the spacer holding to eliminate interference with the fastening portion.