KR20210039780A - A semi-onetouch type coupler for steel reinforcing bar - Google Patents

Abstract

The present invention relates to a semi-one-touch type reinforcing bar coupler comprising: a screw joint; an operation housing; a plurality of wedge-shaped shells; and a spring member. Accordingly, in a state in which one reinforcing bar is pre-constrained with the screw joint, the other reinforcing bar is inserted into the operation housing screwed to the screw joint so that the two reinforcing bars can be combined.

Description

A semi-onetouch type coupler for steel reinforcing bar}

The present invention relates to a reinforcing bar coupler, and more particularly, to a semi-one-touch type reinforcing bar coupler according to a new form that can be conveniently used while reducing manufacturing cost and also satisfying reliability.

In general, the reinforcing bar coupler is a connecting mechanism provided to connect two reinforcing bars to each other.

That is, in order to extend the length of a reinforcing bar to a predetermined length when manufacturing a building structure using reinforcing bars, a welding operation is usually performed, or two reinforcing bars are positioned so as to overlap each other, and then wound using wire or the like.

However, the above-described conventional method has a disadvantage in that it takes a long working time, consumes a lot of reinforcing bars, and is not stable. Therefore, recently, the reinforcing bars are not welded to each other by using a rebar coupler. By making it easy to connect, it is possible to achieve improved assembly.

Such a reinforcing bar coupler uses a wedge-shaped piece provided in the operation housing in a state in which the reinforcing bars are respectively inserted into the inside of both ends of the operation housing so that each reinforcing bar is not taken out, so that the two reinforcing bars are firmly connected to each other. Registered Patent No. 10-1456517, Registered Patent No. 10-0953941, Registered Patent No. 10-1813377, Registered Patent No. 10-1856706, Registered Patent No. 10-1683146, Registered Utility Model No. 20-0474814, etc. As presented.

That is, the reinforcing bar coupler according to the prior art described above allows the wedge-shaped piece to always grip the reinforcing bar even if the wedge-shaped piece is elastically installed with a spring so that the reinforcing bar inserted therein flows.

However, the reinforcing bar coupler according to the prior art described above has a drawback in that even if each wedge-shaped piece is assembled to the reinforcing bar, there is a high risk of separation due to a forcible removal force if sufficient gripping is not achieved. Due to the wedge-shaped piece, it was difficult to assemble the reinforcing bar to the correct position.

In addition, the reinforcing bar coupler according to the prior art may not be able to smoothly press each wedge-shaped piece even though the insertion force of the reinforcing bar is released because the reinforcing bar coupler may move out of the correct position during compression when the reinforcing bar is inserted when the spring is not correctly assembled. There was a problem in that the gripping of the reinforcing bar by each wedge-shaped piece was not stably achieved.

In addition, the structure of the reinforced coupler according to the prior art described above has a problem that the separation of the spring and the wedge-shaped pieces is frequent, so that the assembly work between each other is inevitably difficult to proceed.

In addition, since the reinforcing bar coupler according to the prior art is configured to be constrained by a single pressing operation on both sides of the reinforcing bar, there is a disadvantage that the overall manufacturing cost is inevitably expensive.

Registered Patent No. 10-1456517 Registered Patent No. 10-0953941 Registered Patent No. 10-1813377 Registered Patent No. 10-1856706 Registered Patent No. 10-1683146 Registered Utility Model No. 20-0474814

An object of the present invention is to provide a semi-one-touch reinforced coupler according to a new form in which various problems according to the prior art described above can be solved while reducing the manufacturing cost, and the use can be made convenient and the reliability can be satisfied.

According to the semi-one-touch reinforcing bar coupler of the present invention for achieving the above object, while forming one part, the reinforcing bar coupling end is screwed to the end of any one reinforcing bar to constrain the reinforcing bar, and the reinforcing bar coupling end while forming the other part. A threaded joint extending from and including a housing coupling end in which an end of another reinforcing bar is accommodated therein; While forming one part, the screw connection end is screwed to the housing connection end of the screw joint, and the other part is formed to extend from the screw connection end, and the inner circumferential surface is gradually inclined inward toward the other end, so that the end of the other reinforcing bar. An operation housing comprising the inserted inclined coupling end and a plurality of support protrusions formed on an inclined surface that is an inner circumferential surface of the inclined coupling end; A plurality of wedge-shaped pieces provided on the inner circumferential surface of the inclined coupling end forming the operation housing and having a plurality of wedge-shaped protrusions protruding from the inner surface to grip the outer surface of the other reinforcing bar inserted into the inclined coupling end; One end is accommodated in the housing coupling end of the screw-type joint, the other end is in contact with each wedge-shaped piece in the operating housing, and a spring member for providing an elastic restoring force to each of the wedge-shaped pieces; characterized in that it comprises a.

Here, the housing coupling end of the screw joint is configured to be screwed together while being inserted into the screw coupling end of the operating housing.

In addition, a support groove for supporting one end of the spring member is formed at the housing coupling end of the screwed joint while the spring member is received.

In addition, the outer surface of each wedge-shaped piece is formed to have the same inclination and curvature as the inclined inner circumferential surface of the inclined coupling end constituting the operating housing, and gradually from the portion extending from the screwing end to the other end of the inclined coupling end. It is formed in a narrow trapezoidal structure, and each supporting protrusion of the operating housing is formed to have the same inclination as the inclined inner circumferential surface of the inclined coupling end, and the outer and inner ends of each of the supporting protrusions are the ends of the corresponding part. It is formed in an inclined or round structure that gradually lowers the protrusion height as it goes toward, and the protrusion height formed by the outer end portion of each supporting protrusion is formed to be positioned lower than the inner circumferential surface of the end end of the inclined coupling end forming the operating housing. .

In addition, the inner and outer ends of each of the supporting protrusions are formed to be located within the inclined inner circumferential surface of the inclined coupling end, and the regions in which the respective supporting protrusions are not formed exist at both ends of the inclined inner circumferential surface. do.

As described above, the semi-one-touch reinforcing bar coupler of the present invention is configured so that the structure for connecting two reinforcing bars is used in a combination of screw-type and pressurized coupling, so that it is inconvenient to screw the rebar coupler to the reinforcing bar at the work site. This has the effect that this can be prevented.

In addition, in the case of the semi-one-touch reinforcing bar coupler of the present invention, in the case of each reinforcing bar, it is not necessary to form threads on both sides but only on one side, so that the reinforcing bar can be easily formed, and the manufacturing cost can be reduced. It has an effect that has become.

In addition, the semi-one-touch reinforcing bar coupler of the present invention has the effect that product reliability can be improved compared to the case where both reinforcing bars connected to each other are configured in an insert coupling type.

In addition, the semi-one-touch reinforcing bar coupler of the present invention has the effect that it can be used in common regardless of the standard of the two reinforcing bars connected to each other. In other words, even if the outer diameters of the two reinforcing bars connected to each other are different, only the screwed joint structure between each sized screw joint and each sized operating housing can be used for common use, so that it can be used for connection of all rebars. It will be possible to achieve.

In addition, the semi-one-touch reinforcing bar coupler of the present invention allows for smooth assembly of each wedge-shaped piece by means of an additional inclination or round structure with respect to both ends of each supporting protrusion formed in the operating housing, but according to the insertion of each reinforcing bar. It has the effect of being able to more accurately guide the movement of each wedge-shaped piece.

In addition, the semi-one-touch reinforced coupler of the present invention forms the spring member to form a winding structure in a direction opposite to the screw-type coupling direction between the screw-type joint and the operation housing. While preventing the phenomenon that the end of the member is interfered with by each wedge-shaped piece, it has the effect that it is possible to prevent undesired rotation in the direction of disengagement between the screw-type joint and the operating housing.

In addition, as the semi-one-touch reinforcing bar coupler of the present invention is formed so that the inclined coupling end forming the operating housing has a thicker thickness toward the outside, a tensile load is provided to the reinforcing bar and the load is concentrated at the end of the inclined surface of the inclined coupling end. Even so, it has the effect of being able to prevent damage to the corresponding part.

1 is an exploded perspective view showing a semi-one-touch reinforcing bar coupler according to an embodiment of the present invention
2 and 3 are perspective views showing states viewed from different directions to explain a state in which reinforcing bars are connected to a semi-one-touch reinforcing bar coupler according to an embodiment of the present invention.
Figure 4 is a front view showing to explain the semi-one-touch type reinforced coupler according to an embodiment of the present invention
5 is a cross-sectional view illustrating the internal structure of a semi-one-touch reinforcing bar coupler according to an embodiment of the present invention.
6 is an enlarged view of the “A” part of FIG. 5
Figure 7 is a rear view showing to explain the internal state of the operation housing of the semi-one-touch reinforced coupler according to an embodiment of the present invention
8 is a cross-sectional view illustrating an internal state of the operating housing of the semi-one-touch reinforcing bar coupler according to an embodiment of the present invention.
9 to 13 are cross-sectional views for each process illustrating a process of coupling a semi-one-touch reinforcing bar coupler and a process of connecting each reinforcing bar according to an embodiment of the present invention.
14 to 17 are state diagrams illustrating another embodiment of a semi-one-touch reinforcing bar coupler according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the semi-one-touch reinforcing bar coupler of the present invention will be described with reference to FIGS. 1 to 17.

1 is a perspective view showing a state in which reinforcing bars are connected to a semi-one-touch reinforcing bar coupler according to an embodiment of the present invention, and FIG. 2 is a semi-one-touch reinforcing bar coupler according to an embodiment of the present invention. 3 is an exploded perspective view showing a semi-one-touch type reinforcing bar coupler according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view illustrating the internal structure of a semi-one-touch type reinforcing bar coupler according to an embodiment of the present invention. It is a cross-sectional view shown to do.

As can be seen based on this, the semi-one-touch reinforcing bar coupler according to the embodiment of the present invention largely comprises a screw-type joint 100, an operation housing 200, a plurality of wedge-shaped pieces 300, and a spring member 400. It is suggested that the reinforcing bar (11) is pre-constrained by the screwed joint (100), and the other reinforcing bar (12) is screwed to the screwed joint (100). 200) It is to be able to combine the two reinforcing bars (11, 12) through the operation to be inserted into it.

This will be described in more detail for each configuration as follows.

First, the screw joint 100 will be described.

The screwed joint 100 is provided by being screwed to any one of the two reinforcing bars 11 and 12 to be connected to each other (hereinafter, referred to as “first reinforcing bar”) 11.

That is, the first reinforcing bar 11 of the two reinforcing bars 11 and 12 is screwed to the screwed joint 100.

The screwed joint 100 includes a reinforcing bar coupling end 110 constituting one portion and a housing coupling end 120 constituting the other portion.

Here, the reinforcing bar coupling end 110 is a portion that is screwed to the end of the first reinforcing bar 11 to constrain the first reinforcing bar 11.

A thread 11a is formed on the outer peripheral surface of one end of the first reinforcing bar 11. At this time, the thread 11a is formed by rolling work while the end of the first reinforcing bar 11 is compressed through a swaging method.

In addition, a thread 113 is formed on the inner circumferential surface of the reinforcing bar coupling end 110 by engaging and engaging the thread 11a of the first reinforcing bar 11.

In addition, the housing coupling end 120 is a portion coupled to the operation housing 200 to be described later.

The housing coupling end 120 is formed extending from the reinforced coupling end 110. In particular, the reinforcing bar coupling end 110 is formed to have an outer diameter smaller than that of the housing coupling end 120. Through this difference in outer diameter, it is possible to reduce the total weight of the screwed joint 100.

Of course, the housing coupling end 120 and the reinforcing bar coupling end 110 may be formed with the same outer diameter.

In addition, the end of the other reinforcing bar (hereinafter referred to as “second reinforcing bar”) 12 of the two reinforcing bars 11 and 12 to be connected to each other may be accommodated inside the housing coupling end 120. It is formed to have an inner diameter of about.

The reinforcing bar coupling end 110 and the housing coupling end 120 are formed of a pipe structure so that the inside of the reinforcing bar coupling end 110 and the housing coupling end 120 communicate with each other.

At this time, while the partition jaw 130 is formed between the inner circumferential surface of the reinforcing bar coupling end 110 and the inner circumferential surface of the housing coupling end 120, the first reinforcing bar 11 penetrates into the housing coupling end 120, or , The second reinforcing bar 12 is prevented from penetrating into the reinforcing bar coupling end 110.

In addition, a support groove 122 is formed on the inner circumferential surface of the housing coupling end 120.

The support groove 122 is a portion in which the spring member 400 to be described later is accommodated, and is formed to be stepped so as to support one end of the spring member 400.

In addition, a thread 123 is formed on the outer circumferential surface of the housing coupling end 120. At this time, the threaded thread 123 is a portion provided for screwing with the operation housing 200 to be described later.

Next, the operation housing 200 will be described.

The operation housing 200 is formed of a hollow tube body, a screw coupling end 210 forming one portion, an inclined coupling end 220 forming the other side, and a plurality of inclined coupling ends 220 It is configured to include a support protrusion 230.

Here, the screw coupling end 210 is a portion coupled to the screw joint 100.

The screw coupling end 210 is formed to have an inner diameter sufficient to surround the housing coupling end 120 of the screwed joint 100.

In addition, a screw thread 213 for screwing with the housing coupling end 120 is formed on the inner circumferential surface of the screw coupling end 210. Accordingly, the housing coupling end 120 may be screwed into the screw coupling end 210.

In addition, the inclined coupling end 220 is a portion to which the second reinforcing bar 12 is inserted and coupled.

The inclined coupling end 220 extends from the screw coupling end 210 and forms an inner portion on the inner circumferential surface, and gradually inclines toward the end portion and the inclined surface 221 and the end-side portion of a tapered structure whose inner diameter decreases. A non-inclined surface 222 is formed.

At this time, the inclined surface 221 of the inclined coupling end 220 serves as a guide surface guiding the movement of each wedge-shaped piece 300 to be described later.

In particular, the inclined surface 221 of the inclined coupling end 220 is formed only from the extended portion with the screw coupling end 210 until it reaches the end portion of the inclined coupling end 220, and the inclined coupling The non-inclined surface 222 of the end 220 is formed to form a horizontal structure while forming an end portion of the inclined coupling end 220. That is, the inclined surface 221 is not formed to reach the end of the inclined coupling end 220 so that each wedge-shaped piece 300 installed in the inclined coupling end 220 is It is to be prevented from being ejected to the end.

In addition, each of the supporting protrusions 230 is a configuration provided to guide the sliding movement of each wedge-shaped piece 300.

The support protrusion 230 is formed to be positioned in the gap between each wedge-shaped piece 300, while guiding the movement of each wedge-shaped piece 300 in the longitudinal direction, while the wedge-shaped piece 300 is at an inclined coupling end It plays a role of preventing rotation in the circumferential direction within (220).

Each of these support protrusions 230 is formed in a plurality along the circumferential direction on the inner circumferential surface of the inclined coupling end 220 of the operation housing 200, each of which is formed in a long structure along the axial direction of the operation housing 220. This is as shown in FIGS. 7 and 8.

In addition, each of the supporting protrusions 230 is formed to have a protruding height lower than the thickness of each wedge-shaped piece 300, and the outer end portion (the oblique coupling end side end portion) and the inner end of the support protrusion 230 The portion (the end portion on the side of the screw coupling end) is formed in an inclined or round structure in which the protruding height gradually decreases toward the end of the portion.

Along with this, the protrusion height of each of the support protrusions 230 is formed to be positioned lower than the inner circumferential surface of the end (non-inclined surface) of the inclined coupling end 220 (to have a larger inner diameter compared to the inner diameter of the non-inclined surface) (attached 6). That is, when the reinforcing bars 11 and 12 are inserted by the height difference G, the interference of each of the supporting protrusions 230 is prevented from occurring.

In addition, the inner and outer ends of each of the support protrusion 230 are located within the inclined surface 221 of the inner circumferential surface of the inclined coupling end 220, whereby some of the inclined surfaces 221 of the inclined coupling end 220 The region 221a in which each of the supporting protrusions 230 is not formed is configured to exist.

That is, each wedge-shaped piece 300 is manipulated by the characteristics of the inclined or round structure formed by both ends of the supporting protrusions 112 and the position and height structure of each supporting protrusion 112) In addition to that the assembly operation to be inserted into the inside can be performed smoothly, each support protrusion 112 is maintained at a lower height than the inner circumferential surface of the end end of the inclined coupling end 110, so that the passage of the reinforcing bars 11 and 12 can be made smoothly. will be.

In addition, the inclined coupling end 110 of each operation housing 200 is formed to have a thicker thickness gradually as it goes outward from the extended portion with the screw coupling end 120. This is, when excessive tensile load is provided to the reinforcing bars 11 and 12 due to earthquakes or other causes, each wedge-shaped piece 300 gripping the reinforcing bars 11 and 12 is at the outer end of the inclined coupling end 110 As the load is concentrated in the area while trying to be moved further, the concern of damage can be prevented in advance by reinforcing the strength of the concentrated area of the load mentioned above.

Next, the wedge-shaped piece 300 will be described.

The wedge-shaped piece 300 is a portion provided to grip the outer surfaces of the second reinforcing bars 11 and 12 inserted into the inclined coupling end 220 of the operating housing 200.

It is suggested that such a wedge-shaped piece 300 is divided into four and is provided so as to grip the outer peripheral surfaces of the ends of the reinforcing bars 11 and 12 in four radial directions. Of course, the wedge-shaped piece 300 may be configured to be divided into a plurality of five or more, but when the wedge-shaped piece 300 is three or less, the reinforcing bar 11 is moved along the inclined surface of the inclined coupling end 220. ,12) Gradually gripping force can not be maximized, so there is a concern that the reinforcing bars 11 and 12 may fall out, and if the wedge-shaped piece 300 is divided into a plurality of five or more, assembling property is deteriorated as well as a gap or gap between each other. , As the width of the support protrusion 112 increases rather than the width of the corresponding wedge-shaped piece 300, the gripping area decreases, and it is difficult to maximize the gripping force of the reinforcing bars 11 and 12. Therefore, each wedge-shaped piece 300 is most preferably divided into four.

At this time, while a plurality of wedge-shaped protrusions 310 are protruding from the inner surface of each wedge-shaped piece 300, the outer circumferential surfaces of the reinforcing bars 11 and 12 are firmly gripped.

In particular, the outer surface of each wedge-shaped piece 300 is formed to have the same inclination and curvature as the inclined surface 221 among the inner circumferential surfaces of the inclined coupling end 220 constituting the operation housing 200, and the screw coupling end 210 It is formed in a trapezoidal structure that gradually narrows in width from a portion extending from to the other end of the inclined coupling end 220. This structure allows each wedge-shaped piece 300 to gradually gather together as it moves outward along the inclined surface 221 of the inclined coupling end 220, so that the force to grip the reinforcing bars 11 and 12 can be gradually increased. I made it so.

In addition, the shape of the trapezoidal structure of each wedge-shaped piece 300 is gradually constrained by the respective support protrusions 112 as it moves to the outside, so that even if it is simply assembled in the operation housing 200, a spring to be described later. By the restoring force of the member 400, it provides an effect that it can be maintained without leaving the original position or flowing.

Next, the spring member 400 will be described.

The spring member 400 is configured to provide an elastic restoring force to the wedge-shaped piece 300.

This spring member 400 is made of a conventional coil-type spring, one end is accommodated in the housing coupling end 120 of the screw-type joint 100, the other end is each wedge-shaped piece 300 in the operation housing 200 It is configured to provide an elastic restoring force to each of the wedge-shaped pieces 300 while being in contact with the rear surface.

In particular, it is suggested that the spring member 400 is formed to form a structure that is wound in a direction opposite to the threaded coupling direction between the operation housing 200 and the screwed joint 100. That is, if the screw joint 100 and the operation housing 200 are coupled in a right-hand screw structure, the spring member 400 is formed to be wound in a left-hand screw structure, and the screw joint 100 and the operation housing ( 200) If a simple left-hand threaded structure is used, the spring member 400 is formed to be wound in a right-handed screw structure.

In this structure, in the process of screwing the screw-type joint 100 and the operating housing 200 in a threaded manner, an end portion of the spring member 400 that contacts the end surface of each wedge-shaped piece 300 is When the operation housing 200 is rotated in the direction to be released from the screwed joint 100 while preventing jamming on the circumferential surface of the end of the molded body 300, the end portion of the spring member 400 is It is a structure for being hooked on the circumferential surface of the end of the wedge-shaped piece 300 to interfere with rotation in the corresponding direction.

Moreover, the structure of the spring member 400 can prevent the case where the temporary assembly state is released due to various vibrations during transport in the temporary assembly state.

In the following, the assembly process of the semi-one-touch reinforcing bar coupler according to the embodiment of the present invention described above and the connection process of the two reinforcing bars 11 and 12 using the reinforcing bar coupler thus assembled will be described in more detail.

First, a screw-type joint 100, an operation housing 200, and each wedge-shaped piece 300 and a spring member 400 are prepared, respectively. Each of the components described above is manufactured and provided through a separate manufacturing process from each other.

Then, each wedge-shaped piece 300 is inserted into the operation housing 200 provided in this way. This is as shown in the accompanying FIG. 9. At this time, each of the wedge-shaped pieces 300 are respectively seated between the support protrusions 112 formed on the inclined surface 111 in the inclined coupling end. In particular, since each of the support protrusions 112 is formed to be gradually inclined downward or rounded toward the surface of the inclined surface 111 as both end portions thereof go toward the end side, each wedge-shaped piece 300 is operated in the housing 200. In the process of being inserted into the inclined surface 111, the guide can be guided to be accurately seated between the support protrusions 112.

Subsequently, as shown in the accompanying FIG. 10, the spring member 400 is inserted into the rear of each wedge-shaped piece 300 in the manipulation housing 200, and then the corresponding manipulation housing as shown in FIG. Assembly of the reinforced coupler is completed by coupling the housing coupling end of the screwed joint 200 to 200. Of course, the spring member 400 may be inserted into the operation housing 200 together with the joint 200 while being inserted into the threaded joint 200.

At this time, the spring member 400 of the assembled reinforced coupler is positioned between each wedge-shaped piece 300 and the support groove in the screw-type joint 200, and rearward the wedge-shaped piece 300 (operation housing It maintains the pushed state in the direction toward the inclined coupling end), whereby each wedge-shaped piece 300 is located at the outermost end of the inclined surface 111 of the inclined coupling end 110 constituting the operating housing 200. State.

Next, in the case of connecting two reinforcing bars (11, 12) using the assembled reinforcing bar coupler, any one of the reinforcing bars (11, 12) (first reinforcing bar) 11 is screwed into a screw joint (100). It is coupled to the reinforcing bar coupling end (110).

The first reinforcing bar 11 and the reinforcing bar coupling end 110 are screwed together. As a result, the reinforcing bar coupler forms a state coupled to the first reinforcing bar 11 as shown in FIG. 12, and is provided to a place where the first reinforcing bar 11 is required in this state.

At this time, the first reinforcing bar 11 may be any reinforcing bar that is coupled by the reinforcing bar coupler, and the first reinforcing bar 11 only needs to process the thread 11a by swaging and rolling processing at one end. .

In addition, when connecting another reinforcing bar (second reinforcing bar) 12 to the reinforcing bar coupler, the end of the second reinforcing bar 12 on which the thread is not formed is a slope forming the operating housing 200 of the reinforcing bar coupler. It is inserted into the coupling end 220. This is as shown in the accompanying FIG. 13.

In this way, when the second reinforcing bars (11, 12) are inserted into the inclined coupling end (220), each wedge-shaped piece (300) moves backward along the slope while being partially pushed by the insertion of the reinforcing bars (11, 12). The second reinforcing bars 11 and 12 can be smoothly inserted until the ends of the second reinforcing bars 11 and 12 reach the partition jaws 130 of the screw-type joint 100.

In this way, when the second reinforcing bars 11 and 12 are completely inserted into the inclined coupling end 220, the second reinforcing bars 11 and 12 have the ends of the partition jaws 130 in the threaded joint 100. Because it is in contact with the state, it is not possible to move further forward, and it is not able to move backward due to the gripping force of each of the wedge-shaped pieces 300, and the corresponding state is maintained. This is as shown in the accompanying FIG. 5.

In particular, as the spring member 400 is positioned at the end of the inclined surface 111 as much as possible by the restoring force of the spring member 400, the second reinforcing bar ( The phenomenon of releasing the gripping of the 11 and 12 is prevented, and the rotational flow of the second reinforcing bars 11 and 12 is also prevented by preventing the respective support protrusions 112 from rotating.

As described above, the semi-one-touch reinforcing bar coupler of the present invention is configured so that the structure for connecting the two reinforcing bars (11, 12) is used in combination of screw-type coupling and pressure-type coupling, so that the rebar coupler is screwed to the reinforcing bar at the work site. The discomfort of combining with can be prevented.

That is, the semi-one-touch reinforcing bar coupler of the present invention is provided to the work site in a state coupled to one end (the end of which the thread is formed) of each reinforcing bar (11, 12), and accordingly, at the work site, each reinforcing bar (11, 12) It is possible to easily connect the two reinforcing bars 11 and 12 to each other only by inserting and coupling the other end (the end of which the thread is not formed) into the operating housing 200 of the semi-one-touch reinforcing bar coupler.

In particular, in the case of each reinforcing bar (11, 12), since it is only necessary to form a thread on only one side without forming a thread on both sides, the reinforcing bar can be easily formed and the manufacturing cost can be reduced.

In addition, in the semi-one-touch reinforcing bar coupler of the present invention, product reliability can be improved compared to a case in which both the two reinforcing bars 11 and 12 connected to each other are configured in an insert coupling type.

That is, the insertion-type coupling structure (a structure that connects the reinforcing bars to the operation housing) using a plurality of wedge-shaped pieces 300 makes it easy to work, but it is difficult to secure product reliability due to the operating gap of each wedge-shaped piece 300. It is difficult, and the screw-type connection structure (structure that connects the reinforcing bars to the screw-type joint) is inconvenient to work, but the clearance due to the combination with the reinforcing bars 11 and 12 is insignificant, so it is easy to secure product reliability. In consideration of this, the semi-one-touch reinforced coupler of the present invention in which two coupling structures (insertion coupling structure and screw coupling structure) are applied to both sides can simultaneously satisfy workability and product reliability.

In addition, the semi-one-touch reinforcing bar coupler of the present invention can be used in common regardless of the standard of the two reinforcing bars 11 and 12 connected to each other. That is, even if the outer diameters of the two reinforcing bars 11 and 12 connected to each other are different, all reinforcing bars 11 ,12) can be used to connect, and this makes it possible to achieve the common use of the rebar coupler.

In addition, the semi-one-touch reinforcing bar coupler of the present invention facilitates assembly of each wedge-shaped piece 300 by an additional slope or round structure with respect to both ends of each support protrusion 230 formed in the operation housing 200. While being enabled, it is possible to more accurately guide the movement of each wedge-shaped piece 300 according to the insertion of each reinforcing bar (11, 12).

In addition, as the semi-one-touch reinforced coupler of the present invention is formed to form a winding structure in the opposite direction to the screw-type coupling direction between the screw-type joint 100 and the operation housing 200, the spring member 400 While preventing the phenomenon that the end of the spring member 400 is interfered with each wedge-shaped piece 300 when screwed between the 100) and the operation housing 200, the connection between the screwed joint 100 and the operation housing 200 Unwanted rotation in the release direction can be prevented as much as possible.

In addition, as the semi-one-touch reinforcing bar coupler of the present invention is formed so that the inclined coupling end 220 forming the operating housing 200 has a gradually thicker thickness toward the outside, a tensile load is provided to the reinforcing bars 11 and 12 to be obliquely coupled. Even if the load is concentrated on the portion where the inclined surface 221 of the stage 220 ends, it is possible to prevent damage to the corresponding portion.

On the other hand, the semi-one-touch reinforced coupler of the present invention is not limited to a structure implemented only in a straight reinforced coupler in which the threaded joint 100 and the operation housing 200 are installed on both sides as in the structure of the above-described embodiment.

That is, as shown in the accompanying Fig. 14, the one-touch reinforcing bar coupler of the present invention can also be applied to a “L”-shaped reinforcing bar connection structure, and also to a “T”-shaped reinforcing bar connection structure as shown in FIG. 15 or FIG. It can be applied, as shown in Figure 17 can also be applied to the "+"-shaped reinforcing bar connection structure.

As such, the reinforcing bar coupler of the present invention can be said to be a useful invention that can be implemented in various forms.

11,12. Reinforcement 11a,123,213. Thread
100. Screw type joint 110. Rebar joint
120. Housing coupling end 122. Support groove
130. Sectional jaws 200. Operation housing
210. Screw connection end 220. Oblique connection end
221. Inclined surface 222. Non-inclined surface
230. Support protrusion 300. Wedge-shaped piece
310. Wedge-shaped projection 400. Spring member

Claims (5)

A reinforcing bar coupling end that forms one part and is screwed to the end of one reinforcing bar to constrain the reinforcing bar, and a housing coupling end that extends from the rebar joint end while forming the other part and accommodates the end of the other reinforcing bar inside. Screw-type joint made, including;
A screw connection end that forms one part and is screwed to the housing connection end of the screw-type joint, and the other part is formed as an inclined surface gradually inclined toward the other end with at least a part of the inner circumferential surface extending from the screwing end. An operation housing comprising an inclined coupling end into which the end of the other reinforcing bar is inserted, and a plurality of support protrusions formed on an inclined surface that is an inner circumferential surface of the inclined coupling end;
A plurality of wedge-shaped pieces provided on the inner circumferential surface of the inclined coupling end forming the operation housing and having a plurality of wedge-shaped protrusions protruding from the inner surface to grip the outer surface of the other reinforcing bar inserted into the inclined coupling end;
One end is accommodated in the housing coupling end of the screw-type joint, the other end is in contact with each wedge-shaped piece in the operation housing while providing an elastic restoring force to each of the wedge-shaped piece; characterized in that it comprises a semi-finished product comprising: One-touch rebar coupler. The method of claim 1,
A semi-one-touch reinforced coupler, characterized in that the housing coupling end of the screw joint is configured to be screwed together while being inserted into the screw coupling end of the operation housing. The method of claim 1,
A semi-one-touch reinforced coupler, characterized in that a support groove for supporting one end of the spring member is formed at the housing coupling end of the screwed joint while the spring member is received. The method of claim 1,
The outer surface of each wedge-shaped piece is formed to have the same inclination and curvature as the inclined inner circumferential surface of the inclined coupling end constituting the operating housing, and the width gradually increases from the portion extending from the screwed end to the other end of the inclined coupling end. It is formed in a narrow trapezoidal structure,
Each support protrusion of the operation housing is formed to have the same inclination as the inclined inner circumferential surface of the inclined coupling end,
The outer end portion and the inner end portion of each of the supporting protrusions are formed in an inclined or round structure in which the protruding height gradually decreases toward the end of the corresponding portion,
A semi-one-touch reinforced coupler, characterized in that the protrusion height formed by the outer end portion of each of the supporting protrusions is formed to be positioned lower than the inner circumferential surface of the end end of the inclined coupling end forming the operating housing. The method of claim 4,
The inner and outer ends of each of the supporting protrusions are formed to be located in the inclined inner circumferential surface of the inclined coupling end, and the regions in which the respective supporting protrusions are not formed exist at both ends of the inclined inner circumferential surface. One-touch rebar coupler.

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