WO2020231133A1 - Reinforcing bar coupler and method for manufacturing same - Google Patents

Reinforcing bar coupler and method for manufacturing same Download PDF

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Publication number
WO2020231133A1
WO2020231133A1 PCT/KR2020/006192 KR2020006192W WO2020231133A1 WO 2020231133 A1 WO2020231133 A1 WO 2020231133A1 KR 2020006192 W KR2020006192 W KR 2020006192W WO 2020231133 A1 WO2020231133 A1 WO 2020231133A1
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WO
WIPO (PCT)
Prior art keywords
fixing
housing
coupler
members
reinforcing bars
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PCT/KR2020/006192
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French (fr)
Korean (ko)
Inventor
임민섭
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임민섭
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Filing date
Publication date
Priority claimed from KR1020200039892A external-priority patent/KR102328136B1/en
Application filed by 임민섭 filed Critical 임민섭
Publication of WO2020231133A1 publication Critical patent/WO2020231133A1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups

Definitions

  • the present invention relates to a reinforcing bar coupler for fixing or connecting a reinforcing bar, and in particular, to a reinforcing bar coupler that is small in size and light and can reduce manufacturing cost, and a manufacturing method thereof.
  • Korean Patent Registration No. 10-0240099 (Name: Rebar Connection Structure), Utility Model Registration No. 20-0370223 (Name: Rebar Joint Device), Patent Registration No. 10-0665544 (Name: Rebar Joint Device) , Patent Registration No. 10-1030579 (Name: Rebar Coupler), Patent Publication No. 10-2014-0056009 (Name: Ring Fixed Type Rebar Coupler), Patent Publication No. 10-2015-0145505 (Name: Rebar One-touch Coupler) And Patent Registration No. 10-1714329 (name: coupler for reinforcing bar joints), etc. are disclosed. These couplers have a structure in which a fixing member for fixing reinforcing bars is provided inside a body that can be mechanically coupled and released.
  • the reinforcing bar coupler includes a first body 1 and a second body 2 with a hollow inside.
  • One end of the first body (1) is provided with a first insertion hole (1a) for inserting a reinforcing bar, and at the other end of the first body (1) a first coupling portion for coupling the second body (2) ( 1b) is provided.
  • the first coupling portion (1b) is stepped from the first body (1) by a size corresponding to the thickness of the second body (2) and a screw is formed on the outer peripheral surface.
  • a second insertion hole (2a) for inserting reinforcing bars is provided at one end of the second body (2), and a second coupling part for fastening the second body (2) to the first body (1) at the other end. (2b) is provided.
  • the second coupling portion 2b has a configuration in which a screw is formed on the inner peripheral surface of the second body 2 by a length corresponding to the length of the first coupling portion 1b.
  • the reinforcing bar coupler inserts a fixing member (not shown) for fixing the reinforcing bars in the first body 1 and the second body 2, respectively, and then the first coupling part 1b and the second coupling part It is completed by screwing (2b) and fastening the first body 1 and the second body 2. Then, the reinforcing bars are fixed by inserting the reinforcing bars through the first and second insertion ports 1a and 2a, respectively.
  • the reinforcing bar coupler firmly fixes each separate reinforcing bar through a fixing member provided inside the first and second bodies 1 and 2. Accordingly, the reinforcing bars that were separated from each other are set in a substantially connected state through a reinforcing bar coupler.
  • reinforcing bars are employed to increase mechanical strength, in particular tension, of buildings, bridges, and roads.
  • the mechanical strength of the rebar coupler itself and the bonding force to the rebar should have a tensile strength that is more than that of the rebar itself. if. If the rebar coupler is destroyed by external vibration due to earthquake or the like or the rebar is separated from the rebar coupler, a large accident such as collapse of a building or bridge may occur.
  • the reinforced coupler is formed by fastening the first body 1 and the second body 2 to each other.
  • FIG. 3 is an enlarged view of portion A in FIG. 2.
  • the length L1 of the first and second coupling portions 1b and 2b is essentially increased, and the size of the screw formed therein, that is, the height from the screw bone to the thread, will increase.
  • the lengths of the first and second coupling portions 1b and 2b become longer, the lengths of the first body 1 and the second body 2 also become longer, and eventually the length of the reinforced coupler becomes longer.
  • the lengths of the first and second coupling portions 1b and 2b increase, the number of screws to be processed increases, so the processing time of the screw increases. In particular, when the size of the screw increases, the thread processing time is reduced. It will increase dramatically.
  • the size of the screw of the first and second coupling portions 1b and 2b increases, the thickness T1 from the screw bone to the inner circumferential surface in the first coupling portion 1b and the screw bone in the second coupling portion 2b The thickness T2 from the to the outer peripheral surface is reduced. When these thicknesses T1 and T2 become smaller, the strength and toughness of the first and second coupling portions 1b and 2b are lowered, and thus the rebar coupler is damaged even by a relatively small shearing force.
  • the reinforced coupler of FIG. 4 includes a body 3 with a hollow inside. And the first and second caps 4a and 4b are respectively fastened and coupled to both ends of the body 3. Fixing members (not shown) for fixing the reinforcing bars inserted through the first and second caps 4a and 4b are provided at both inner ends of the body 3. In this reinforced coupler, first and second caps 4a and 4b are screwed to both ends of the body 3. Therefore, in the case of the present reinforced coupler, as in the configuration example of FIG. 1, the reinforced coupler has a large and heavy size, and requires a lot of manufacturing time and manufacturing cost.
  • Figures 5 to 7 is an exploded perspective view showing a conventional configuration example of a fixing member employed in a reinforced coupler.
  • the fixing member includes a plurality of fixing pieces 6a to 6c and a coupling ring 7 for coupling these fixing pieces 6a to 6c. And a ring groove for coupling the coupling ring 7 is provided in the fixed pieces 6a to 6c.
  • Figure 5 shows a case where the ring groove (8a) is installed on the inner circumferential surface of the fixing pieces (6a ⁇ 6c)
  • Figure 6 shows the case where the ring groove (8b) is installed on the outer circumferential surface of the fixing pieces (6a ⁇ 6c)
  • 7 shows the case where the ring groove (8c) is installed in the longitudinal section of the fixing pieces (6a to 6c).
  • the coupling ring 7 is for more stably aligning the fixing pieces 6a-6c when inserting the fixing member into the body of the reinforced coupler.
  • the rebar is not inserted well when the rebar is inserted into the rebar coupler, or the pressing force of the fixing member against the rebar decreases, causing the rebar from the rebar coupler. There will be a problem of departure.
  • the present invention has been created in view of the above circumstances, and has a technical object to provide a reinforcing bar coupler capable of reducing the size and weight of a reinforcing bar coupler and a method for manufacturing the same.
  • the present invention has another technical object to provide a reinforced coupler and a manufacturing method thereof that can reduce the manufacturing time and manufacturing cost of the reinforced coupler.
  • the inside is hollow and first and second insertion holes are formed for inserting reinforcing bars at both sides, respectively.
  • a first and second fixing member for fixing the first and second reinforcing bars that are installed inside the housing and inserted through the first and second insertion holes, and the first and second fixing members And a first and second elastic member for pressing each of the first and second insertion ports, and first and second support members for supporting each of the first and second elastic members, and the housing It is composed of an integrated body, characterized in that the inner diameter monotonically decreases while going toward the first and second insertion ports.
  • the housing of the reinforced coupler is integrally formed, and the first and second ribs are provided on the outer peripheral surface of the housing. These ribs increase the bonding force between the concrete layer and the rebar coupler by increasing the surface area of the housing.
  • the housing is integrally formed through the fusion of the first body and the second body, a coupling structure such as a threaded portion for coupling the first body and the second body is unnecessary, so the size and weight of the rebar coupler can be significantly reduced. Yes, of course, the manufacturing time can be significantly reduced.
  • FIG. 1 is a view showing an example of a configuration of a conventional reinforcing bar coupler.
  • FIG. 2 is a view showing a cross-sectional configuration of the first body (1) and the second body (2) in FIG.
  • FIG. 3 is an enlarged view of part A in FIG. 2.
  • FIG. 4 is a view showing another configuration example of a conventional reinforced coupler
  • FIG. 5 to 7 are exploded perspective views showing a conventional configuration example of a fixing member employed in a reinforced coupler
  • FIG. 5 is a view showing a case where a ring groove 8a is installed on the inner circumferential surface of the fixing pieces 6a to 6c
  • 6 is a view showing a case where a ring groove (8b) is installed on the outer circumferential surface of the fixing pieces (6a ⁇ 6c)
  • Figure 7 is a view showing a case where the ring groove (8c) is installed in the longitudinal section of the fixing pieces (6a ⁇ 6c) .
  • FIG. 8 is a perspective view showing the external shape of a reinforced coupler according to an embodiment of the present invention.
  • FIG. 9 is a cross-sectional view of the reinforcing bar coupler shown in FIG. 8
  • FIG. 10 is an exploded perspective view of components mounted inside the housing 10 in FIG. 9.
  • FIG. 11 is a cross-sectional view showing a cross-sectional configuration taken along line A-A' in FIG. 10;
  • FIG. 12 is a perspective view showing the external shape of the fixing members (20a, 20b).
  • 13 to 18 are cross-sectional views for each process for explaining a method of manufacturing a reinforced coupler according to an embodiment of the present invention.
  • 19 and 20 are cross-sectional views showing another configuration example of ends of the first and second bodies 10a and 10b in FIG. 13;
  • FIG. 21 is a cross-sectional view showing another example of the configuration of ends of the first and second bodies 10a and 10b in FIG. 13.
  • FIG. 22 is a cross-sectional view showing a cross-sectional configuration of a reinforcing bar coupler when a housing 10 is configured using the configuration of FIG. 21.
  • the inside is hollow and first and second insertion holes are formed for inserting reinforcing bars at both sides, respectively.
  • a first and second fixing member for fixing the first and second reinforcing bars that are installed inside the housing and inserted through the first and second insertion holes, and the first and second fixing members And a first and second elastic member for pressing each of the first and second insertion ports, and first and second support members for supporting each of the first and second elastic members, and the housing It is composed of an integrated body, characterized in that the inner diameter monotonically decreases while going toward the first and second insertion ports.
  • first ribs are provided on both outer circumferential surfaces of the housing along the longitudinal direction thereof.
  • a second rib is formed along the circumferential direction in the outer central portion of the housing.
  • a third rib is formed along the circumferential direction in the inner central portion of the housing.
  • the first and second support members are characterized in that a screw hole is provided in a central portion.
  • first and second fixing members are each provided with a plurality of fixing pieces and a coupling ring, and the inner circumferential surface or the outer circumferential surface of the fixing piece is provided with a ring groove for inserting the coupling ring and a coupling hole for inserting and fixing the projection It is characterized in that a protrusion is provided at a position corresponding to the coupling hole 214 on an outer or inner circumferential surface of the coupling ring.
  • the coupling hole is characterized in that the stepped portion is formed in the middle portion, and the projection has a plurality of projection pieces.
  • a guide portion for guiding the reinforcing bar into the fixing member is formed at the tip of the fixing piece, and a knurling portion for preventing the reinforcing bar from being separated from the fixing member is provided on an inner circumferential surface of the fixing piece.
  • the knurling portion is configured in a saw blade shape in cross section, and each saw blade is characterized in that the front blade angle is 90 degrees or more.
  • the method of manufacturing a reinforcing bar coupler includes a housing having a hollow interior and having first and second insertion holes for inserting reinforcing bars on both sides, respectively, and the first and second insertion holes are formed inside the housing.
  • First and second fixing members for fixing the first and second reinforcing bars inserted through the second insertion hole, respectively, and first and second fixing members for pressing the first and second fixing members toward the first and second insertion ports, respectively
  • the inside is hollow and a first insertion hole is formed at one end thereof.
  • a second body fastening step of fastening to a second screw hole a housing forming step of fusing the other end of the first body and the second body to each other, and a fastening rod removing step of removing the fastening bar from the housing. It is characterized by being.
  • the housing forming step is characterized in that it is carried out through friction welding.
  • a first step portion is provided at the other end of the first body, and a second step portion having a shape opposite to the first step is provided at the other end of the second body.
  • first and second step portions have the same length, and when the first and second step portions are engaged, a gap is formed between the first and second step portions.
  • first and second step portions are characterized in that the length of the step portion disposed on the inner circumferential surface is formed to be shorter than that of the other,
  • ribs are formed along the length direction on the outer peripheries of the first and second bodies, respectively.
  • FIG. 8 is a perspective view showing an external shape of a reinforced coupler according to an embodiment of the present invention
  • FIG. 9 is a cross-sectional view thereof.
  • the reinforced coupler of the present embodiment is configured with a cylindrical or cylindrical housing 10 having a hollow inside and an integrated body.
  • the shape of the housing 10 is not limited to a specific one.
  • the outer diameter of the housing 10 gradually decreases toward both ends from the central portion, and first ribs 13 are formed on both outer circumferential surfaces along the longitudinal direction thereof. In this example, four first ribs 13 are formed, but the number is not specified, and six or more of the first ribs 13 may preferably be formed.
  • a second rib 14 is formed in the central portion of the housing 10 along the circumferential direction.
  • the first and second ribs 13 and 14 reinforce the strength and toughness of the housing 10 and enlarge the contact area between the concrete layer and the housing 10, for example, in which the main housing 10 is buried.
  • the first and/or second ribs 13 and 14 may be omitted, and their shape is also not limited to a specific one.
  • First and second insertion ports 11 and 12 for inserting reinforcing bars 100a and 100b are provided at both ends of the housing 10. And the first and second fixing members (20a, 20b), the first and second elastic members (30a, 30b), respectively, while going inward from the first and second insertion ports (11, 12), and the first and second 2 support members 40a and 40b are provided.
  • the first and second support members 40a and 40b are elastically supported in the inward direction by the first and second elastic members 30a and 30b, respectively, to the second rib 14 at the inner central portion of the housing 10. Contacted and supported.
  • the first and second support members 40a and 40b may be configured to contact and support each other at an inner central portion of the housing 10.
  • the first and second fixing members 20a and 20b are pressed outwardly by the first and second elastic members 30a and 30b, respectively.
  • the inner diameters of the first and second insertion ports 11 and 12 are set smaller than the inner diameter of the central portion.
  • the inclined portion 50 is formed on the inner circumferential surface adjacent to the first and second insertion ports 11 and 12, so that the inner diameter monotonically decreases toward the outside, that is, toward the first and second insertion ports 11 and 12.
  • the length of the inclined portion 50 is preferably set longer than the length of the fixing members 20a, 20b so that the fixing members 20a, 20b are set to slide along the inclined portion 50 by a predetermined distance or more,
  • the fixing members 20a and 20b are pressed in the longitudinal and horizontal directions by the elastic members 30a and 30b and are pressed in the longitudinal and vertical directions by the inclined portion 50 to strongly press the reinforcing bars 100a and 100b. Will be fixed.
  • FIG. 10 is a view showing an exploded perspective view of the components mounted inside the housing 10 in the reinforced coupler
  • FIG. 11 is a cross-sectional view showing a cross-sectional configuration taken along line A-A' in FIG. 10
  • FIG. 12 is a fixed It is a perspective view showing the external shape of the members 20a and 20b.
  • the fixing members 20a and 20b are configured with a plurality of fixing pieces 21 and a coupling ring 22, respectively.
  • the fixing piece 21 is made of a metal such as iron, for example.
  • the fixing piece 21 has an arc shape so that it can be compressed on the outer circumferential surfaces of the reinforcing bars 100a and 200b, and is formed to decrease in width and thickness while going from one end to the other.
  • the fixing members 20a and 20b to which the fixing pieces 21 are coupled are formed in a substantially hollow truncated cone shape whose outer diameter gradually decreases as it goes from one side to the other.
  • An inclined guide part 211 for guiding the reinforcing bars 100a and 100b into the fixing members 20a and 20b is formed at the front end of the fixing piece 21, that is, at the entrance side into which the reinforcing bars 100a and 100b are inserted,
  • the inner circumferential surface of the fixing piece 21 is firmly coupled to the outer circumferential surface of the reinforcing bars (100a, 100b), especially the nodes of the reinforcing bars in the case of deformed reinforcing bars, to prevent the reinforcing bars (100a, 100b) from being separated from the fixing members (20a, 20b)
  • a knurling unit 212 is provided for this.
  • the knurled part 212 is, for example, configured in a saw blade shape in cross section, and at this time, each saw blade has a fore edge angle ⁇ of 90 degrees or more so that the reinforcing bars 100a and 100b are fixed members 20a, While it can be easily entered into the inner side of 20b), it has a structure that prevents separation from the outer side of the fixing members (20a, 20b).
  • the structure or shape of the knurled portion 212 is not limited to a specific one, and an integrated structure capable of firmly pressing and fixing the reinforcing bars 100a and 100b may be preferably employed.
  • a ring groove 213 for inserting the coupling ring 22 is formed on the inner circumferential surface of the fixing piece 21, and a protrusion 221 of the coupling ring 22 is inserted into the approximately central portion of the ring groove 213 to be fixed.
  • a coupling hole 214 is provided for that.
  • a stepped step 214a is formed in an intermediate portion.
  • the coupling hole 214 is formed with a wider inner diameter of the rear end portion than the front end portion into which the protrusion 221 is inserted by the stepped jaw 214a.
  • the coupling ring 22 is made of resin or synthetic resin, for example.
  • the coupling ring 22 is preferably made of an elastic material.
  • a plurality of protrusions 221 are formed on the outer circumferential surface of the coupling ring 22 at the same distance.
  • the protrusion 221 is installed at a position corresponding to the coupling hole 214 of the fixing piece 21.
  • the end of the protrusion 221, that is, the head, is divided into a plurality of protrusion pieces 221a.
  • the protrusion 221 is press-fit into the coupling hole 214 of the fixing piece 21.
  • the protrusion pieces 221a are spaced apart from each other after the protrusion 221 crosses the stepped jaw 214a. That is, the protrusion 221 has an outer diameter of its head to be expanded. Accordingly, the protrusion 221 is caught in the stepped jaw 214a inside the coupling hole 214, and thus the separation is limited.
  • the first and second elastic members 30a and 30b are for mutually elastically supporting the fixing members 20a and 20b and the support members 40a and 40b.
  • the elastic members 30a and 30b are composed of a coil spring or a compression spring made of a metal material such as iron.
  • the elastic members 30a, 30b may have an outer diameter of one side and an outer diameter of the other side differently set.
  • one side of the elastic members 30a, 30b is a housing (to stably support the fixing members 20a, 20b). It is set to have an outer diameter as close as possible to the inner diameter of 10).
  • the other side of the elastic members 30a and 30b will have an appropriate size and shape that can be combined with the support members 40a and 40b.
  • the first and second support members 40a and 40b are made of, for example, a metal material such as iron.
  • the support members 40a and 40b are provided with a seating groove 401 for seating the elastic members 30a and 30b on one side, and a stepped portion 402 having a small outer diameter is formed on the other side.
  • the step portion 402 is for providing a space for the second rib 14 as can be understood from FIG. 7.
  • the support members 40a and 40b are formed with a screw hole 403 for coupling a fastening rod such as a direct screw or the like in the central portion. This screw hole 403 is for assembly of the present reinforcing bar coupler, which will be described in more detail later.
  • the reinforcing bar coupler is used to connect the first and second reinforcing bars 100a and 100b to each other or to fix the first or second reinforcing bars 100a and 100b.
  • Reinforcing bars (100a, 100b) are inserted and fixed to the reinforcing bar coupler through the first and second insertion ports (11, 12).
  • the first and second supporting members 40a and 40b are pressed in the mutually inward direction by the elastic members 30a and 30b, so that the first and second supporting members (40a, 40b) is arranged in close contact with the second rib 14 in the central portion of the housing 10, and the first and second fixing members 20a, 20b are the first and second elastic members 30a , 30b) are pressed in the outer direction, respectively, and disposed in positions close to the first and second insertion ports 11 and 12, respectively.
  • the reinforcing bars (100a, 100b) are fixed members (20a, 20a, 100b) along the guide portion (211) of the fixing piece (21) in FIGS. 9 and 11 It enters the inside of 20b).
  • the reinforcing bars (100a, 100b) enter the fixing members (20a, 20b) if the pressing force of the reinforcing bars (100a, 100b) against the fixing members (20a, 20b) is greater than the pressing force by the elastic members (30a, 30b)
  • the fixing members 20a and 20b slide inward along the inclined portion 50 of the housing 10.
  • the amount of movement of the fixing members 20a and 20b is related to the diameter of the reinforcing bars 100a and 100b.
  • This reinforcing bar coupler can be used to connect or fix reinforcing bars of various diameters, the larger the diameter of the reinforcing bars 100a and 100b.
  • the inner diameters of the fixing members 20a and 20b will be enlarged.
  • the coupling ring 22 that couples the fixing pieces 21 will be elongated or destroyed. As described above, the coupling ring 22 is only for stably assembling the fixing members 20a and 20b.
  • the fixing members 20a and 20b are pressed toward the insertion ports 11 and 12 by the elastic members 30a and 30b. As described above, the fixing members 20a and 20b are disposed inwardly to the inclined portion 50 of the housing 10. Therefore, when the fixing members (20a, 20b) are pressed toward the insertion ports (11, 12), the inner diameter of the fixing members (20a, 20b) is reduced so that the fixing members (20a, 20b) strongly press the outer peripheral surfaces of the reinforcing bars (100a, 100b). do.
  • a knurled part 12 is provided on the inner circumferential surface of the fixing piece 21 constituting the fixing members 20a and 20b.
  • the knurling part 12 The outer circumferential surface of the reinforcing bars (100a, 100b), in particular, is tightly coupled with the joints of the deformed reinforcing bars to prevent separation of the reinforcing bars (100a, 100b) from the rebar coupler,
  • Reinforced couplers are installed, for example, embedded in a concrete layer.
  • the reinforcing bar coupler of the above embodiment is provided with first and second ribs 13 and 14 on the outer circumferential surface. These ribs 13 and 14 increase the surface area of the housing 10, thereby enhancing the bonding force between the concrete layer and the rebar coupler.
  • FIGS. 13 to 18 are cross-sectional views for each process for explaining a method of manufacturing a reinforced coupler according to an embodiment of the present invention.
  • each internal configuration that is, fixing members (20a, 20b) for constituting the fixing members (20a, 20b), and the coupling ring (22), elastic members (30a, 30b) using a conventional method.
  • elastic members (30a, 30b) using a conventional method.
  • support members (40a, 40b) a first body (10a) and a second body (10b) for forming the housing 10 are created.
  • first and second insertion holes 11 and 12 are formed at one end of the first and second bodies 10a and 10b, respectively, and a first rib 13 is formed on the outer circumferential surface thereof.
  • first and second bodies 10a and 10b may be heat treated to further reinforce their strength and toughness.
  • the fixing members 20a and 20b are configured as shown in FIG. 12, and as shown in FIG. 14, sequentially inside the first body 10a.
  • the first fixing member 20a, the first elastic member 30a, and the first support member 40a are inserted.
  • the second fixing member 20b, the second elastic member 30b, and the second support member 40b are sequentially inserted into the second body 10b.
  • the fastening rod 200 is inserted through the washer 300 toward the insertion hole 11 of the first body 10a, and the screw hole 403 of the first support member 40a. ).
  • the first support member 40a enters the inside of the first body 10a while compressing the first elastic member 30a. This process is carried out in the same way for the second body 10b,
  • the first body 10a and the second body 10b are arranged so that their ends are in contact with each other.
  • the first and second support members 40a and 40b are compressed in the direction of the insertion ports 11 and 12, respectively, the first and second support members 40a and 40b are disposed to be spaced apart from each other.
  • the first body 10a and the second body 10b are integrally fused together.
  • the second body 10b is pressed against the first body 10a at high speed while mutually pressing the first and second bodies 10a and 10b.
  • Friction welding to rotate or to rotate the first body (10a) with respect to the second body (10b) at high speed may be preferably employed, to rotate the first body (10a) or the second body (10b) at high speed. Then, a large amount of heat is generated by friction at the front end surfaces of the ends of the first and second bodies 10a and 10b that are in close contact with each other, and by this heat, the front ends of the first and second bodies 10a and 10b Is gradually fused.
  • the second rib 14 is naturally generated in the central portion of the reinforcing bar coupler as shown in FIG. 18 by condensing the molten metal material on the interface during this fusion process.
  • the housing 10 of the reinforced coupler is integrally formed through fusion bonding between the first body 10a and the second body 10b. Therefore, unlike the prior art, since a coupling structure such as a screw portion for coupling the first body 10a and the second body 10b becomes unnecessary, the size and weight of the reinforcing bar coupler can be greatly reduced, as well as the manufacturing time thereof. Can be shortened,
  • first and second ribs 13 and 14 are provided on the outer circumferential surface of the rebar coupler to improve the strength and toughness of the rebar coupler, the thickness of the housing constituting the rebar coupler can be further reduced, and heat treatment work on the housing Additional effects such as omission of can be expected.
  • the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical spirit of the present invention.
  • the shape of the ends to be fused to each other of the first and second bodies 10a and 10b is not limited to a specific one and may be appropriately modified as necessary.
  • FIG. 19 is a cross-sectional view showing another configuration example of the ends of the first and second bodies 10a and 10b, and the same reference numerals are added to portions substantially the same as those of the above-described embodiment described above in FIG. 19.
  • step portions 101 and 102 having a shape corresponding to each other are formed at the other end portions of the first and second bodies 10a and 10b, that is, opposite ends.
  • the first body 10a has a step portion 101 formed on the inner side of the end
  • the second body 10b has a step 102 formed on the outer side of the end, of course, the first and the first 2
  • the step portions 101 and 102 formed on the bodies 10a and 10b may be formed to alternate with each other.
  • the step portions 101 and 102 as shown in FIG.
  • the lengths of 102) are the same, and when the first body 10a and the second body 10b are engaged with each other, the upper step 101 and the lower step 102 have a certain clearance d1. do,
  • the fusion speed and degree of fusion between the first body 10a and the second body 10b will be set by the relative rotation speed between the first body 10a and the second body 10b.
  • the contact area between the first body 10a and the second body 10b by adjusting the contact area between the first body 10a and the second body 10b through the size adjustment of the clearance d1, the contact area between the first body 10a and the second body 10b The speed and degree of fusion can be adjusted,
  • FIG. 21 is a cross-sectional view showing another configuration example of the ends of the first and second bodies 10a, 10b, which corresponds to FIG. 20, and
  • FIG. 22 is a housing ( It is a cross-sectional view showing the cross-sectional configuration of a reinforcing bar coupler when 10) is configured.
  • the lengths of the step portion 101 of the first body 10a and the step portion 102 of the second body 10b are set to be the same.
  • the length of the step portion 102 corresponding to the inner circumferential surface of the housing 10 is set smaller than that of the others.
  • the reduced length d2 of the step portion 102 will be appropriately set according to the fusion amount and fusion time of the first and second bodies 10a and 10b.
  • the second rib 14a is formed only on the outer peripheral surface of the housing 10 as shown in FIG. 22.
  • the stepped portions 402 of the first and second support members 40a and 40b may be omitted.
  • the second rib 14a may be removed and omitted if necessary.
  • friction welding has been described as an example.
  • other suitable welding methods such as electric resistance welding in addition to friction welding may be preferably employed.
  • the ring groove 213 is formed on the inner circumferential surface of the fixing piece 21, but the fixing members 20a and 20b are formed. It is also possible to form the ring groove to be formed on the outer peripheral surface of the fixing piece (21). In this case, the coupling ring 22 is coupled to the outer circumferential surface of the fixing members 20a and 20b, and the protrusion 221 will be formed on the inner circumferential surface of the coupling ring 22.
  • the housing of the reinforced coupler is integrally formed, and the first and second ribs are provided on the outer peripheral surface of the housing. These ribs increase the bonding force between the concrete layer and the rebar coupler by increasing the surface area of the housing.
  • the housing is integrally formed through the fusion of the first body and the second body, a coupling structure such as a threaded portion for coupling the first body and the second body is unnecessary, so the size and weight of the rebar coupler can be significantly reduced. Yes, of course, the manufacturing time can be significantly reduced.

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  • Reinforcement Elements For Buildings (AREA)

Abstract

The present invention relates to a reinforcing bar coupler that is small in size and light and of which the manufacturing cost is reduced, and a method for manufacturing same. The reinforcing bar coupler, according to the present invention, is a reinforcing bar coupler for connecting or fixing reinforcing bars, the reinforcing bar coupler comprising: a housing having a hollow inside and having first and second insertion ports for inserting reinforcing bars on both sides thereof; first and second fixing members, installed inside the housing, for respectively fixing first and second reinforcing bars, which are inserted through the first and second insertion ports; first and second elastic members for pressing the first and second fixing members toward the first and second insertion ports, respectively; and first and second support members for supporting the first and second elastic members, respectively, wherein the housing is composed of an integrated body and is characterized in that the inner diameter decreases monotonically toward the first and second insertion ports.

Description

철근 커플러 및 그 제조방법Rebar coupler and manufacturing method thereof
본 발명은 철근을 고정하거나 연결하기 위한 철근 커플러에 관한 것으로, 특히 크기가 작고 가벼우며 제조비용을 절감할 수 있도록 된 철근 커플러 및 그 제조방법에 관한 것이다.The present invention relates to a reinforcing bar coupler for fixing or connecting a reinforcing bar, and in particular, to a reinforcing bar coupler that is small in size and light and can reduce manufacturing cost, and a manufacturing method thereof.
건물이나 교량, 도로 등을 시공하는 건설 및 토목 공사에 있어서는 구조물의 기계적 강도, 특히 장력을 높이기 위해 다량의 철근(또는 철심)을 사용하게 된다. 이때 철근은 그 길이가 일정하게 설정되어 생산되기 때문에 필요에 따라 이들을 절단하거나 연결하여 사용하게 된다. 철근을 연결하는 방법으로서는 양 철근을 서로 용접하는 용접방법과, 양 철근을 원통형 슬리브에 삽입하고 전체적으로 가압하여 압착하는 압착 방법 및, 커플러를 채용하는 방법 등이 있다. 이 중 커플러는 작업성이 우수하고, 철근을 매우 높은 결합력으로 연결할 수 있다는 장점이 있기 때문에 많이 채용되고 있다.In construction and civil works to construct buildings, bridges, roads, etc., a large amount of reinforcement (or iron core) is used to increase the mechanical strength, especially the tension, of the structure. At this time, since the reinforcing bars are produced with a constant length, they are cut or connected as needed. As a method of connecting the reinforcing bars, there are a welding method in which both reinforcing bars are welded to each other, a crimping method in which both reinforcing bars are inserted into a cylindrical sleeve and pressed as a whole, and a method of employing a coupler. Among them, couplers are widely used because they have excellent workability and can connect rebars with very high bonding force.
철근 커플러에 대해서는 대한민국 특허등록 제10-0240099호(명칭: 철근 연결 구조), 실용신안등록 제20-0370223호(명칭: 철근이음장치), 특허등록 제10-0665544호(명칭: 철근 이음장치), 특허등록 제10-1030579호(명칭: 철근 커플러), 공개특허 제10-2014-0056009호(명칭: 링 고정 타입 철근 커플러), 공개특허 제10-2015-0145505호(명칭: 철근 원터치 커플러) 및 특허등록 제10-1714329호(명칭: 철근 이음용 커플러) 등에 개시되어 있다. 이들 커플러는 기계적으로 결합 및 해제가 가능한 몸체 내부에 철근을 고정하기 위한 고정부재가 구비되는 구조로 되어 있다.Regarding the rebar coupler, Korean Patent Registration No. 10-0240099 (Name: Rebar Connection Structure), Utility Model Registration No. 20-0370223 (Name: Rebar Joint Device), Patent Registration No. 10-0665544 (Name: Rebar Joint Device) , Patent Registration No. 10-1030579 (Name: Rebar Coupler), Patent Publication No. 10-2014-0056009 (Name: Ring Fixed Type Rebar Coupler), Patent Publication No. 10-2015-0145505 (Name: Rebar One-touch Coupler) And Patent Registration No. 10-1714329 (name: coupler for reinforcing bar joints), etc. are disclosed. These couplers have a structure in which a fixing member for fixing reinforcing bars is provided inside a body that can be mechanically coupled and released.
도 1은 종래의 철근 커플러의 일 구성 예를 나타낸 도면이고, 도 2는 도 1에서 제1 몸체(1)와 제2 몸체(2)의 단면 구성을 나타낸 도면이다. 도면에서, 철근 커플러는 내부가 중공된 제1 몸체(1)와 제2 몸체(2)를 구비한다. 제1 몸체(1)의 일측 단부에는 철근을 삽입하기 위한 제1 삽입구(1a)가 마련되고, 타측 단부에는 제1 몸체(1)를 제2 몸체(2)와 결합하기 위한 제1 결합부(1b)가 구비된다. 제1 결합부(1b)는 제2 몸체(2)의 두께에 대응하는 크기만큼 제1 몸체(1)와 단차가 지면서 외주면에 나사가 형성된다. 또한, 제2 몸체(2)의 일측 단부에는 철근을 삽입하기 위한 제2 삽입구(2a)가 마련되면서 타측 단부에는 제2 몸체(2)를 제1 몸체(1)와 체결하기 위한 제2 결합부(2b)가 구비된다. 제2 결합부(2b)는 제2 몸체(2)의 내주면에 제1 결합부(1b)의 길이에 대응하는 길이만큼 나사가 형성된 구성으로 이루어진다.1 is a view showing a configuration example of a conventional reinforced coupler, and Figure 2 is a view showing a cross-sectional configuration of the first body (1) and the second body (2) in FIG. In the drawing, the reinforcing bar coupler includes a first body 1 and a second body 2 with a hollow inside. One end of the first body (1) is provided with a first insertion hole (1a) for inserting a reinforcing bar, and at the other end of the first body (1) a first coupling portion for coupling the second body (2) ( 1b) is provided. The first coupling portion (1b) is stepped from the first body (1) by a size corresponding to the thickness of the second body (2) and a screw is formed on the outer peripheral surface. In addition, a second insertion hole (2a) for inserting reinforcing bars is provided at one end of the second body (2), and a second coupling part for fastening the second body (2) to the first body (1) at the other end. (2b) is provided. The second coupling portion 2b has a configuration in which a screw is formed on the inner peripheral surface of the second body 2 by a length corresponding to the length of the first coupling portion 1b.
상기 철근 커플러는 제1 몸체(1)와 제2 몸체(2)의 내부에 각각 철근을 고정하기 위한 고정부재(도시되지 않음)를 삽입한 후, 제1 결합부(1b)와 제2 결합부(2b)를 나사 결합하여 제1 몸체(1)와 제2 몸체(2)를 체결하여 완성하게 된다. 그리고 이후에는 제1 및 제2 삽입구(1a, 2a)를 통해 철근을 각각 삽입하여 철근을 고정하게 된다. 철근 커플러는 제1 및 제2 몸체(1, 2) 내부에 구비되는 고정부재를 통해 각각 별개의 철근을 견고하게 고정하게 된다. 이에 따라 서로 분리되어 있던 철근은 철근 커플러를 통해 실질적으로 연결상태로 설정된다.The reinforcing bar coupler inserts a fixing member (not shown) for fixing the reinforcing bars in the first body 1 and the second body 2, respectively, and then the first coupling part 1b and the second coupling part It is completed by screwing (2b) and fastening the first body 1 and the second body 2. Then, the reinforcing bars are fixed by inserting the reinforcing bars through the first and second insertion ports 1a and 2a, respectively. The reinforcing bar coupler firmly fixes each separate reinforcing bar through a fixing member provided inside the first and second bodies 1 and 2. Accordingly, the reinforcing bars that were separated from each other are set in a substantially connected state through a reinforcing bar coupler.
상기한 바와 같이, 철근은 건물이나 교량, 도로 등의 기계적 강도, 특히 장력을 높이기 위해 채용된다. 철근 커플러 자체의 기계적 강도와 철근에 대한 결합력은 철근 자체가 갖고 있는 인장력 이상의 인장강도를 갖추어야 할 것이다. 만일. 지진 등에 의한 외부 진동에 의해 철근 커플러가 파괴되거나 또는 철근 커플러로부터 철근이 이탈된다면 건물이나 교량이 붕괴되는 등의 대형 사고가 발생할 수 있다. 도 1 및 도 2에서 철근 커플러는 제1 몸체(1)와 제2 몸체(2)가 체결되어 형성된다. 만일, 지진이나 다른 원인에 의해 건물이나 교량에 진동이나 외력이 가해지게 되면 그에 상응하는 상당한 힘이 철근 커플러에 가해지게 되고, 그러한 외력, 특히 전단력이 철근 커플러의 결합부위, 즉 제1 몸체(1)와 제2 몸체(2)의 결합부위에 가해지게 된다. 따라서 철근 커플러를 제조하는 경우에는 제1 몸체(1)와 제2 몸체(2)의 결합력을 충분하게 제고할 필요가 있다.As described above, reinforcing bars are employed to increase mechanical strength, in particular tension, of buildings, bridges, and roads. The mechanical strength of the rebar coupler itself and the bonding force to the rebar should have a tensile strength that is more than that of the rebar itself. if. If the rebar coupler is destroyed by external vibration due to earthquake or the like or the rebar is separated from the rebar coupler, a large accident such as collapse of a building or bridge may occur. 1 and 2, the reinforced coupler is formed by fastening the first body 1 and the second body 2 to each other. If vibration or external force is applied to a building or a bridge due to an earthquake or other cause, a corresponding considerable force is applied to the rebar coupler, and such an external force, especially shear force, is applied to the joint portion of the rebar coupler, that is, the first body (1). ) And the second body (2). Therefore, in the case of manufacturing a reinforced coupler, it is necessary to sufficiently increase the bonding force between the first body 1 and the second body 2.
도 3은 도 2에서 A 부분을 확대하여 나타낸 도면이다. 제1 몸체(1)와 제2 몸체(2)의 결합력을 높이기 위해서는 제1 결합부(1b)와 제2 결합부(2b) 사이의 접촉 면적을 넓히는 것이 요구된다. 그리고 이를 위해서는 필수적으로 제1 및 제2 결합부(1b, 2b)의 길이(L1)는 길어지고, 여기에 형성되는 나사의 크기, 즉 나사골로부터 나사산까지의 높이는 커지게 될 것이다. 제1 및 제2 결합부(1b, 2b)의 길이가 길어지게 되면 그 만큼 제1 몸체(1)와 제2 몸체(2)의 길이도 길어지게 되고, 결국 철근 커플러의 길이가 길어지게 된다. 또한, 제1 및 제2 결합부(1b, 2b)의 길이가 길어지게 되면 가공해야 할 나사의 수가 증가하므로 나사의 가공 시간이 증가하게 되고, 특히 나사의 크기가 커지게 되면 그 나사 가공 시간은 비약적으로 증가하게 된다. 또한, 제1 및 제2 결합부(1b, 2b)의 나사의 크기가 커지게 되면, 제1 결합부(1b)에서 나사골로부터 내주면까지의 두께(T1)와 제2 결합부(2b)에서 나사골로부터 외주면까지의 두께(T2)가 작아지게 된다. 이들 두께(T1, T2)가 작아지게 되면 제1 및 제2 결합부(1b, 2b)의 강도와 인성 등이 낮아지게 되므로 비교적 작은 전단력에 의해서도 철근 커플러가 파손되는 문제가 발생한다. 이를 해결하기 위해서는 상기 두께(T1, T2)를 크게 하고, 특히 제1 및 제2 결합부(1b, 2b)의 강도 및 인성을 증가시키기 위해 열처리가 필수적으로 요구된다, 이에 따라 종래의 철근 커플러는 크기가 크고 무거우며 제조 시간 및 제조 비용이 많이 소요되는 문제가 있게 된다.FIG. 3 is an enlarged view of portion A in FIG. 2. In order to increase the coupling force between the first body 1 and the second body 2, it is required to increase the contact area between the first coupling portion 1b and the second coupling portion 2b. And for this purpose, the length L1 of the first and second coupling portions 1b and 2b is essentially increased, and the size of the screw formed therein, that is, the height from the screw bone to the thread, will increase. When the lengths of the first and second coupling portions 1b and 2b become longer, the lengths of the first body 1 and the second body 2 also become longer, and eventually the length of the reinforced coupler becomes longer. In addition, when the lengths of the first and second coupling portions 1b and 2b increase, the number of screws to be processed increases, so the processing time of the screw increases. In particular, when the size of the screw increases, the thread processing time is reduced. It will increase dramatically. In addition, when the size of the screw of the first and second coupling portions 1b and 2b increases, the thickness T1 from the screw bone to the inner circumferential surface in the first coupling portion 1b and the screw bone in the second coupling portion 2b The thickness T2 from the to the outer peripheral surface is reduced. When these thicknesses T1 and T2 become smaller, the strength and toughness of the first and second coupling portions 1b and 2b are lowered, and thus the rebar coupler is damaged even by a relatively small shearing force. In order to solve this problem, heat treatment is required to increase the thickness (T1, T2), and in particular, to increase the strength and toughness of the first and second coupling portions (1b, 2b). Accordingly, the conventional rebar coupler There is a problem that the size is large and heavy, and it takes a lot of manufacturing time and manufacturing cost.
도 4는 종래의 철근 커플러의 다른 구성 예를 나타낸 도면이다. 도 4의 철근 커플러는 내부가 중공된 몸체(3)를 구비한다. 그리고 이 몸체(3)의 양단에는 제1 및 제2 캡(4a, 4b)이 각각 체결 및 결합된다. 상기 몸체(3)의 양쪽으로 내측 단부에는 제1 및 제2 캡(4a, 4b)을 통해서 삽입되는 철근을 고정하기 위한 고정부재(도시되지 않음)가 구비된다. 본 철근 커플러는 몸체(3)의 양단에 제1 및 제2 캡(4a, 4b)이 나사결합된다. 따라서 본 철근 커플러의 경우에도 도 1의 구성 예와 마찬가지로 철근 커플러의 크기가 크고 무거우며 제조 시간 및 제조 비용이 많이 소요되는 문제가 있게 된다.4 is a view showing another configuration example of a conventional reinforced coupler. The reinforced coupler of FIG. 4 includes a body 3 with a hollow inside. And the first and second caps 4a and 4b are respectively fastened and coupled to both ends of the body 3. Fixing members (not shown) for fixing the reinforcing bars inserted through the first and second caps 4a and 4b are provided at both inner ends of the body 3. In this reinforced coupler, first and second caps 4a and 4b are screwed to both ends of the body 3. Therefore, in the case of the present reinforced coupler, as in the configuration example of FIG. 1, the reinforced coupler has a large and heavy size, and requires a lot of manufacturing time and manufacturing cost.
한편, 도 5 내지 도 7은 철근 커플러에 채용되는 고정부재의 종래의 구성 예를 나타낸 분리사시도이다. 도면에서 고정부재는 다수의 고정편(6a~6c)과, 이들 고정편(6a~6c)을 결합하기 위한 결합링(7)을 구비한다. 그리고 고정편(6a~6c)에는 결합링(7)을 결합하기 위한 링홈이 마련된다. 도 5는 고정편(6a~6c)의 내주면에 링홈(8a)이 설치되는 경우를 나타낸 것이고, 도 6은 고정편(6a~6c)의 외주면에 링홈(8b)이 설치되는 경우를 나타낸 것이며, 도 7은 고정편(6a~6c)의 종단면에 링홈(8c)이 설치되는 경우를 나타낸 것이다. 상기 결합링(7)은 고정부재를 철근 커플러의 몸체 내부에 삽입할 때 각 고정편(6a~6c)을 보다 안정적으로 정렬하기 위한 것이다. 만일, 고정편(6a~6c)이 몸체 내부에 비정상적으로 정렬되어 있게 되면, 이후 철근 커플러에 철근을 삽입할 때 철근이 잘 삽입되지 않거나 철근에 대한 고정부재의 가압력이 저하되어 철근이 철근 커플러로부터 이탈되는 문제가 발생하게 된다.On the other hand, Figures 5 to 7 is an exploded perspective view showing a conventional configuration example of a fixing member employed in a reinforced coupler. In the drawing, the fixing member includes a plurality of fixing pieces 6a to 6c and a coupling ring 7 for coupling these fixing pieces 6a to 6c. And a ring groove for coupling the coupling ring 7 is provided in the fixed pieces 6a to 6c. Figure 5 shows a case where the ring groove (8a) is installed on the inner circumferential surface of the fixing pieces (6a ~ 6c), Figure 6 shows the case where the ring groove (8b) is installed on the outer circumferential surface of the fixing pieces (6a ~ 6c), 7 shows the case where the ring groove (8c) is installed in the longitudinal section of the fixing pieces (6a to 6c). The coupling ring 7 is for more stably aligning the fixing pieces 6a-6c when inserting the fixing member into the body of the reinforced coupler. If the fixing pieces (6a~6c) are abnormally aligned inside the body, the rebar is not inserted well when the rebar is inserted into the rebar coupler, or the pressing force of the fixing member against the rebar decreases, causing the rebar from the rebar coupler. There will be a problem of departure.
그러나 종래의 고정부재에 있어서는 고정편(6a~6c)과 결합링(7)의 결합이 반영구적이지 않고 임시적으로 이루어지므로 고정부재를 철근 커플러의 몸체 내부에 삽입할 때 고정부재로부터 결합링(7)이 이탈되어 고정편(6a~6c)의 정렬상태가 어긋나는 문제가 발생하게 된다.However, in the conventional fixing member, since the coupling between the fixing pieces 6a-6c and the coupling ring 7 is not semi-permanent and is made temporarily, the coupling ring 7 from the fixing member when the fixing member is inserted into the body of the rebar coupler. Due to this separation, there is a problem that the alignment of the fixing pieces 6a to 6c is misaligned.
본 발명은 상기한 사정을 감안해서 창출된 것으로서, 철근 커플러의 크기와 무게를 줄일 수 있는 철근 커플러 및 그 제조방법을 제공함에 기술적 목적이 있다.The present invention has been created in view of the above circumstances, and has a technical object to provide a reinforcing bar coupler capable of reducing the size and weight of a reinforcing bar coupler and a method for manufacturing the same.
또한, 본 발명은 철근 커플러의 제조시간과 제조비용을 저감할 수 있는 철근 커플러 및 그 제조방법을 제공함에 다른 기술적 목적이 있다.In addition, the present invention has another technical object to provide a reinforced coupler and a manufacturing method thereof that can reduce the manufacturing time and manufacturing cost of the reinforced coupler.
상기 목적을 실현하기 위한 본 발명의 제1 관점에 따른 철근 커플러는 철근을 연결 또는 고정하기 위한 철근 커플러에 있어서, 내부가 중공됨과 더불어 양측에 철근을 각각 삽입하기 위한 제1 및 제2 삽입구가 형성되는 하우징과, 상기 하우징의 내측에 설치되고, 상기 제1 및 제2 삽입구를 통해 삽입되는 제1 및 제2 철근을 각각 고정하기 위한 제1 및 제2 고정부재, 상기 제1 및 제2 고정부재를 상기 제1 및 제2 삽입구 측으로 각각 가압하기 위한 제1 및 제2 탄성부재, 상기 제1 및 제2 탄성부재를 각각 지지하기 위한 제1 및 제2 지지부재를 구비하여 구성되고, 상기 하우징은 일체화된 몸체로 구성되고, 제1 및 제2 삽입구 측으로 가면서 내경이 단조적으로 감소하는 것을 특징으로 한다.In the reinforcing bar coupler according to the first aspect of the present invention for realizing the above object, in the reinforcing bar coupler for connecting or fixing reinforcing bars, the inside is hollow and first and second insertion holes are formed for inserting reinforcing bars at both sides, respectively. A first and second fixing member for fixing the first and second reinforcing bars that are installed inside the housing and inserted through the first and second insertion holes, and the first and second fixing members And a first and second elastic member for pressing each of the first and second insertion ports, and first and second support members for supporting each of the first and second elastic members, and the housing It is composed of an integrated body, characterized in that the inner diameter monotonically decreases while going toward the first and second insertion ports.
상기한 구성으로 된 본 발명에 의하면, 철근 커플러의 하우징이 일체적으로 형성되고, 하우징의 외주면에 제1 및 제2 리브가 구비된다. 이들 리브는 하우징의 표면적을 증대시킴으로써 콘크리트층과 철근 커플러의 결합력을 제고하게 된다. 또한, 하우징이 제1 몸체와 제2 몸체의 융착을 통해 일체적으로 형성되어 제1 몸체와 제2 몸체를 결합하기 위한 나사부 등의 결합 구조가 불필요하게 되므로 철근 커플러의 크기와 무게를 대폭 줄일 수 있음은 물론, 그 제조시간을 대폭 단축할 수 있게 된다.According to the present invention having the above-described configuration, the housing of the reinforced coupler is integrally formed, and the first and second ribs are provided on the outer peripheral surface of the housing. These ribs increase the bonding force between the concrete layer and the rebar coupler by increasing the surface area of the housing. In addition, since the housing is integrally formed through the fusion of the first body and the second body, a coupling structure such as a threaded portion for coupling the first body and the second body is unnecessary, so the size and weight of the rebar coupler can be significantly reduced. Yes, of course, the manufacturing time can be significantly reduced.
본 명세서에 첨부된 도면은 본 발명의 기술적 구성을 효율적으로 설명하기 위한 것이다. 따라서 도면의 일부 구성은 본 발명의 효율적인 이해를 위해 간략화되거나 과장되게 묘사될 수 있음을 이해하여야 한다.The accompanying drawings in the present specification are for efficiently describing the technical configuration of the present invention. Therefore, it should be understood that some configurations of the drawings may be simplified or exaggerated for an efficient understanding of the present invention.
도 1은 종래의 철근 커플러의 일 구성 예를 나타낸 도면.1 is a view showing an example of a configuration of a conventional reinforcing bar coupler.
도 2는 도 1에서 제1 몸체(1)와 제2 몸체(2)의 단면 구성을 나타낸 도면.2 is a view showing a cross-sectional configuration of the first body (1) and the second body (2) in FIG.
도 3은 도 2에서 A 부분을 확대하여 나타낸 도면.3 is an enlarged view of part A in FIG. 2.
도 4는 종래의 철근 커플러의 다른 구성 예를 나타낸 도면,4 is a view showing another configuration example of a conventional reinforced coupler,
도 5 내지 도 7은 철근 커플러에 채용되는 고정부재의 종래의 구성 예를 나타낸 분리사시도로서, 도 5는 고정편(6a~6c)의 내주면에 링홈(8a)이 설치되는 경우를 나타낸 도면이고, 도 6은 고정편(6a~6c)의 외주면에 링홈(8b)이 설치되는 경우를 나타낸 도면이며, 도 7은 고정편(6a~6c)의 종단면에 링홈(8c)이 설치되는 경우를 나타낸 도면.5 to 7 are exploded perspective views showing a conventional configuration example of a fixing member employed in a reinforced coupler, and FIG. 5 is a view showing a case where a ring groove 8a is installed on the inner circumferential surface of the fixing pieces 6a to 6c, 6 is a view showing a case where a ring groove (8b) is installed on the outer circumferential surface of the fixing pieces (6a ~ 6c), Figure 7 is a view showing a case where the ring groove (8c) is installed in the longitudinal section of the fixing pieces (6a ~ 6c) .
도 8은 본 발명의 일 실시 예에 따른 철근 커플러의 외관 형상을 나타낸 사시도.8 is a perspective view showing the external shape of a reinforced coupler according to an embodiment of the present invention.
도 9은 도 8에 나타낸 철근 커플러의 단면도9 is a cross-sectional view of the reinforcing bar coupler shown in FIG. 8
도 10은 도 9에서 하우징(10)의 내부에 장착되는 구성들의 분리 사시도.10 is an exploded perspective view of components mounted inside the housing 10 in FIG. 9.
도 11은 도 10에서 A-A'선에 따른 단면 구성을 나타낸 단면도.11 is a cross-sectional view showing a cross-sectional configuration taken along line A-A' in FIG. 10;
도 12는 고정부재(20a, 20b)의 외관형상을 나타낸 사시도.12 is a perspective view showing the external shape of the fixing members (20a, 20b).
도 13 내지 도 18은 본 발명의 일 실시 예에 따른 철근 커플러의 제조방법을 설명하기 위한 공정별 단면도.13 to 18 are cross-sectional views for each process for explaining a method of manufacturing a reinforced coupler according to an embodiment of the present invention.
도 19 및 도 20은 도 13에서 제1 및 제2 몸체(10a, 10b)의 단부의 다른 구성 예를 나타낸 단면도,19 and 20 are cross-sectional views showing another configuration example of ends of the first and second bodies 10a and 10b in FIG. 13;
도 21은 도 13에서 제1 및 제2 몸체(10a, 10b)의 단부의 또 다른 구성 예를 나타낸 단면도.FIG. 21 is a cross-sectional view showing another example of the configuration of ends of the first and second bodies 10a and 10b in FIG. 13.
도 22는 도 21의 구성을 이용하여 하우징(10)을 구성한 경우의 철근 커플러의 단면 구성을 나타낸 단면도.22 is a cross-sectional view showing a cross-sectional configuration of a reinforcing bar coupler when a housing 10 is configured using the configuration of FIG. 21.
상기 목적을 실현하기 위한 본 발명의 제1 관점에 따른 철근 커플러는 철근을 연결 또는 고정하기 위한 철근 커플러에 있어서, 내부가 중공됨과 더불어 양측에 철근을 각각 삽입하기 위한 제1 및 제2 삽입구가 형성되는 하우징과, 상기 하우징의 내측에 설치되고, 상기 제1 및 제2 삽입구를 통해 삽입되는 제1 및 제2 철근을 각각 고정하기 위한 제1 및 제2 고정부재, 상기 제1 및 제2 고정부재를 상기 제1 및 제2 삽입구 측으로 각각 가압하기 위한 제1 및 제2 탄성부재, 상기 제1 및 제2 탄성부재를 각각 지지하기 위한 제1 및 제2 지지부재를 구비하여 구성되고, 상기 하우징은 일체화된 몸체로 구성되고, 제1 및 제2 삽입구 측으로 가면서 내경이 단조적으로 감소하는 것을 특징으로 한다.In the reinforcing bar coupler according to the first aspect of the present invention for realizing the above object, in the reinforcing bar coupler for connecting or fixing reinforcing bars, the inside is hollow and first and second insertion holes are formed for inserting reinforcing bars at both sides, respectively. A first and second fixing member for fixing the first and second reinforcing bars that are installed inside the housing and inserted through the first and second insertion holes, and the first and second fixing members And a first and second elastic member for pressing each of the first and second insertion ports, and first and second support members for supporting each of the first and second elastic members, and the housing It is composed of an integrated body, characterized in that the inner diameter monotonically decreases while going toward the first and second insertion ports.
또한, 상기 하우징의 양측 외주면에는 그 길이 방향을 따라 각각 복수 개의 제1 리브가 구비되는 것을 특징으로 한다.In addition, a plurality of first ribs are provided on both outer circumferential surfaces of the housing along the longitudinal direction thereof.
또한, 상기 하우징의 외측 중앙 부분에는 원주방향을 따라 제2 리브가 형성되는 것을 특징으로 한다.In addition, a second rib is formed along the circumferential direction in the outer central portion of the housing.
또한. 상기 하우징의 내측 중앙 부분에는 원주방향을 따라 제3 리브가 형성되는 것을 특징으로 한다.In addition. A third rib is formed along the circumferential direction in the inner central portion of the housing.
또한. 상기 제1 및 제2 지지부재는 중앙 부분에 나사공이 구비되는 것을 특징으로 한다.In addition. The first and second support members are characterized in that a screw hole is provided in a central portion.
또한, 상기 제1 및 제2 고정부재는 각각 다수의 고정편과 결합링을 구비하여 구성되고, 상기 고정편의 내주면 또는 외주면에는 결합링을 삽입하기 위한 링홈과, 돌기를 끼워서 고정하기 위한 결합공이 구비되며, 상기 결합링의 외주면 또는 내주면에는 상기 결합공(214)에 대응하는 위치에 돌기가 구비되는 것을 특징으로 한다.In addition, the first and second fixing members are each provided with a plurality of fixing pieces and a coupling ring, and the inner circumferential surface or the outer circumferential surface of the fixing piece is provided with a ring groove for inserting the coupling ring and a coupling hole for inserting and fixing the projection It is characterized in that a protrusion is provided at a position corresponding to the coupling hole 214 on an outer or inner circumferential surface of the coupling ring.
또한, 상기 결합공은 중간 부분에 단턱이 형성되고, 상기 돌기는 다수의 돌기편을 구비하는 것을 특징으로 한다.In addition, the coupling hole is characterized in that the stepped portion is formed in the middle portion, and the projection has a plurality of projection pieces.
또한, 상기 고정편의 선단부에는 철근을 고정부재 내측으로 안내하기 위한 안내부가 형성되고, 고정편의 내주면에는 고정부재로부터 철근이 이탈되는 것을 방지하기 위한 널링부가 구비되는 것을 특징으로 한다.In addition, a guide portion for guiding the reinforcing bar into the fixing member is formed at the tip of the fixing piece, and a knurling portion for preventing the reinforcing bar from being separated from the fixing member is provided on an inner circumferential surface of the fixing piece.
또한, 상기 널링부는 단면이 톱날 형상으로 구성되고, 각 톱날은 앞날각이 90도 이상인 것을 특징으로 한다.In addition, the knurling portion is configured in a saw blade shape in cross section, and each saw blade is characterized in that the front blade angle is 90 degrees or more.
본 발명의 제2 관점에 따른 철근 커플러의 제조방법은 내부가 중공됨과 더불어 양측에 철근을 각각 삽입하기 위한 제1 및 제2 삽입구가 형성되는 하우징을 포함하고, 상기 하우징의 내측에는 상기 제1 및 제2 삽입구를 통해 삽입되는 제1 및 제2 철근을 각각 고정하기 위한 제1 및 제2 고정부재와 상기 제1 및 제2 고정부재를 상기 제1 및 제2 삽입구 측으로 각각 가압하기 위한 제1 및 제2 탄성부재 및 상기 제1 및 제2 탄성부재를 각각 지지하기 위한 제1 및 제2 지지부재를 구비하는 철근 커플러의 제조방법에 있어서, 내부가 중공됨과 더불어 일측 단부에는 제1 삽입구가 형성되는 제1 몸체를 형성하는 제1 몸체 형성 단계와, 내부가 중공됨과 더불어 일측 단부에는 제2 삽입구가 형성되는 제2 몸체를 형성하는 제2 몸체 형성 단계, 상기 제1 및 제2 지지부재의 중앙 부분에 제1 및 제2 나사공을 각각 형성하는 나사공 형성단계, 상기 제1 몸체의 내측에 제1 고정부재와 제1 탄성부재 및 제1 지지부재를 삽입하고, 제1 삽입구 측으로 체결봉을 삽입하여 상기 제1 나사공에 체결하는 제1 몸체 체결단계, 상기 제2 몸체의 내측에 제2 고정부재와 제2 탄성부재 및 제2 지지부재를 삽입하고, 제2 삽입구 측으로 체결봉을 삽입하여 상기 제2 나사공에 체결하는 제2 몸체 체결단계, 상기 제1 몸체와 제2 몸체의 타측 단부를 상호 융착하는 하우징 형성단계 및, 상기 하우징으로부터 상기 체결봉을 제거하는 체결봉 제거단계를 포함하여 구성되는 것을 특징으로 한다.The method of manufacturing a reinforcing bar coupler according to the second aspect of the present invention includes a housing having a hollow interior and having first and second insertion holes for inserting reinforcing bars on both sides, respectively, and the first and second insertion holes are formed inside the housing. First and second fixing members for fixing the first and second reinforcing bars inserted through the second insertion hole, respectively, and first and second fixing members for pressing the first and second fixing members toward the first and second insertion ports, respectively In the manufacturing method of a reinforced coupler having a second elastic member and first and second support members for supporting each of the first and second elastic members, the inside is hollow and a first insertion hole is formed at one end thereof. A first body forming step of forming a first body, a second body forming step of forming a second body having a second insertion hole formed at one end while being hollow inside, a central portion of the first and second support members A screw hole forming step of forming first and second screw holes respectively in the first body, inserting the first fixing member, the first elastic member, and the first supporting member into the inner side of the first body, and inserting the fastening rod toward the first insertion port The first body fastening step of fastening to the first screw hole, inserting a second fixing member, a second elastic member, and a second supporting member into the inner side of the second body, and inserting a fastening rod into the second insertion port. A second body fastening step of fastening to a second screw hole, a housing forming step of fusing the other end of the first body and the second body to each other, and a fastening rod removing step of removing the fastening bar from the housing. It is characterized by being.
또한, 상기 하우징 형성단계는 마찰용접을 통해 실행하는 것을 특징으로 한다.In addition, the housing forming step is characterized in that it is carried out through friction welding.
또한, 상기 제1 및 제2 몸체를 열처리하는 단계를 추가로 구비하여 구성되는 것을 특징으로 한다.In addition, it is characterized in that it is configured by further comprising a step of heat-treating the first and second bodies.
또한, 상기 제1 몸체의 타측 단부에는 제1 단차부가 구비되고, 상기 제2 몸체의 타측 단부에는 상기 제1 단차부와 대향하는 형상을 갖는 제2 단차부가 구비되는 것을 특징으로 한다.In addition, a first step portion is provided at the other end of the first body, and a second step portion having a shape opposite to the first step is provided at the other end of the second body.
또한, 상기 제1 및 제2 단차부는 길이가 서로 동일하고, 제1 및 제2 단차부를 맞물릴 때 제1 및 제2 단차부 사이에 유격이 형성되는 것을 특징으로 한다.In addition, the first and second step portions have the same length, and when the first and second step portions are engaged, a gap is formed between the first and second step portions.
또한, 상기 제1 및 제2 단차부는 내주면에 배치되는 단차부의 길이가 다른 것에 비해 짧게 형성되는 것을 특징으로 한다,In addition, the first and second step portions are characterized in that the length of the step portion disposed on the inner circumferential surface is formed to be shorter than that of the other,
또한, 상기 제1 및 제2 몸체 형성단계에서 제1 및 제2 몸체의 외주연에 각각 길이 방향을 따라 리브를 형성하는 것을 특징으로 한다.In addition, in the first and second body forming steps, ribs are formed along the length direction on the outer peripheries of the first and second bodies, respectively.
이하 도면을 참조하여 본 발명에 따른 실시 예를 설명한다. 다만, 이하에서 설명하는 실시 예는 본 발명의 하나의 바람직한 구현 예를 예시적으로 나타낸 것이다. 본 발명은 이하의 실시 예에 한정되지 않고 그 기술적 사상을 벗어나지 않는 범위 내에서 다양하게 변형시켜 실시할 수 있음을 당업자는 용이하게 이해할 수 있을 것이다.Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the embodiments described below are illustrative of one preferred embodiment of the present invention. It will be readily understood by those skilled in the art that the present invention is not limited to the following embodiments and can be implemented by various modifications without departing from the technical spirit thereof.
도 8은 본 발명의 일 실시 예에 따른 철근 커플러의 외관 형상을 나타낸 사시도이고, 도 9는 그 단면도이다. 본 실시 예의 철근 커플러는 내부가 중공되고 일체화된 몸체를 갖는 원기둥형 또는 원통형 하우징(10)을 구비하여 구성된다. 하우징(10)의 형상은 특정한 것에 한정되지 않는다. 하우징(10)은 중앙 부분으로부터 양 단부로 갈수록 점차 외경이 감소하고, 양측 외주면에는 그 길이 방향을 따라 각각 제1 리브(13)가 형성된다. 본 예에서 제1 리브(13)는 4개가 형성되어 있으나, 그 개수는 특정되지 않는다, 제1 리브(13)는 바람직하게 6개 이상 형성될 수 있다. 또한, 하우징(10)의 중앙 부분에는 원주방향을 따라 제2 리브(14)가 형성된다. 상기 제1 및 제2 리브(13, 14)는 하우징(10)의 강도와 인성을 보강함과 더불어, 본 하우징(10)이 매립되는 예컨대 콘크리트층과 하우징(10) 사이의 접촉면적을 확대하기 위한 것이다. 제1 및/또는 제2 리브(13, 14)는 생략될 수 있고 그 형상 또한 특정한 것에 한정되지 않는다.8 is a perspective view showing an external shape of a reinforced coupler according to an embodiment of the present invention, and FIG. 9 is a cross-sectional view thereof. The reinforced coupler of the present embodiment is configured with a cylindrical or cylindrical housing 10 having a hollow inside and an integrated body. The shape of the housing 10 is not limited to a specific one. The outer diameter of the housing 10 gradually decreases toward both ends from the central portion, and first ribs 13 are formed on both outer circumferential surfaces along the longitudinal direction thereof. In this example, four first ribs 13 are formed, but the number is not specified, and six or more of the first ribs 13 may preferably be formed. Further, a second rib 14 is formed in the central portion of the housing 10 along the circumferential direction. The first and second ribs 13 and 14 reinforce the strength and toughness of the housing 10 and enlarge the contact area between the concrete layer and the housing 10, for example, in which the main housing 10 is buried. For. The first and/or second ribs 13 and 14 may be omitted, and their shape is also not limited to a specific one.
하우징(10)의 양측 단부에는 철근(100a, 100b)을 각각 삽입하기 위한 제1 및 제2 삽입구(11, 12)가 구비된다. 그리고 이 제1 및 제2 삽입구(11, 12)로부터 내측으로 가면서 각각 제1 및 제2 고정부재(20a, 20b)와, 제1 및 제2 탄성부재(30a, 30b) 및, 제1 및 제2 지지부재(40a, 40b)가 구비된다. 제1 및 제2 지지부재(40a, 40b)는 제1 및 제2 탄성부재(30a, 30b)에 의해 각각 내측 방향으로 탄력 지지되어 하우징(10)의 내부 중앙 부분에서 제2 리브(14)에 접촉 및 지지된다. 본 발명의 바람직한 다른 실시 예에서 제1 및 제2 지지부재(40a, 40b)는 하우징(10)의 내부 중앙 부분에서 상호 접촉 및 지지하도록 구성될 수 있다.First and second insertion ports 11 and 12 for inserting reinforcing bars 100a and 100b are provided at both ends of the housing 10. And the first and second fixing members (20a, 20b), the first and second elastic members (30a, 30b), respectively, while going inward from the first and second insertion ports (11, 12), and the first and second 2 support members 40a and 40b are provided. The first and second support members 40a and 40b are elastically supported in the inward direction by the first and second elastic members 30a and 30b, respectively, to the second rib 14 at the inner central portion of the housing 10. Contacted and supported. In another preferred embodiment of the present invention, the first and second support members 40a and 40b may be configured to contact and support each other at an inner central portion of the housing 10.
제1 및 제2 고정부재(20a, 20b)는 각각 제1 및 제2 탄성부재(30a, 30b)에 의해 외측 방향으로 가압된다. 하우징(10)은 중앙 부분의 내경에 비해 제1 및 제2 삽입구(11, 12)의 내경이 작게 설정된다. 그리고 제1 및 제2 삽입구(11, 12)와 인접하는 내주면에 경사부(50)가 형성되어 외측, 즉 제1 및 제2 삽입구(11, 12) 측으로 갈수록 내경이 단조적으로 감소하게 된다. 이 경사부(50)의 길이는 바람직하게 고정부재(20a, 20b)의 길이보다 길게 설정되어 고정부재(20a, 20b)가 경사부(50)를 따라 일정 거리 이상 슬라이드 이동이 가능하도록 설정된다, 고정부재(20a, 20b)는 탄성부재(30a, 30b)에 의해 길이방향과 수평방향으로 가압되면서 경사부(50)에 의해 길이방향과 수직방향으로 가압되어 철근(100a, 100b)을 강하게 가압 및 고정하게 된다.The first and second fixing members 20a and 20b are pressed outwardly by the first and second elastic members 30a and 30b, respectively. In the housing 10, the inner diameters of the first and second insertion ports 11 and 12 are set smaller than the inner diameter of the central portion. In addition, the inclined portion 50 is formed on the inner circumferential surface adjacent to the first and second insertion ports 11 and 12, so that the inner diameter monotonically decreases toward the outside, that is, toward the first and second insertion ports 11 and 12. The length of the inclined portion 50 is preferably set longer than the length of the fixing members 20a, 20b so that the fixing members 20a, 20b are set to slide along the inclined portion 50 by a predetermined distance or more, The fixing members 20a and 20b are pressed in the longitudinal and horizontal directions by the elastic members 30a and 30b and are pressed in the longitudinal and vertical directions by the inclined portion 50 to strongly press the reinforcing bars 100a and 100b. Will be fixed.
도 10은 상기 철근 커플러에 있어서, 하우징(10)의 내부에 장착되는 구성들의 분리사시도를 나타낸 도면이고, 도 11은 도 10에서 A-A'선에 따른 단면 구성을 나타낸 단면도, 도 12는 고정부재(20a, 20b)의 외관형상을 나타낸 사시도이다. 도면에서, 고정부재(20a, 20b)는 각각 다수의 고정편(21)과 결합링(22)을 구비하여 구성된다. 고정편(21)은 예컨대 철 등의 금속으로 구성된다. 고정편(21)은 철근(100a, 200b)의 외주면에 압착될 수 있도록 원호 형상을 갖추면서 일단부로부터 타단부로 가면서 그 폭과 두께가 작아지도록 형성된다. 이에 따라 고정편(21)이 결합되는 고정부재(20a, 20b)는 도 12에 나타낸 바와 같이 일측으로부터 타측으로 가면서 외경이 점차 축소되는 전체적으로 대략 내부가 중공된 원뿔대 형상으로 이루어지게 된다. 고정편(21)의 선단부, 즉 철근(100a, 100b)이 삽입되는 입구측에는 철근(100a, 100b)을 고정부재(20a, 20b) 내측으로 안내하기 위한 경사진 안내부(211)가 형성되고, 고정편(21)의 내주면에는 철근(100a, 100b)의 외주면, 특히 이형철근의 경우 철근의 마디와 견고하게 결합되어 고정부재(20a, 20b)로부터 철근(100a, 100b)이 이탈되는 것을 방지하기 위한 널링(knurling)부(212)가 구비된다. 본 실시 예에서 널링부(212)는 예컨대 단면이 톱날 형상으로 구성된다, 또한, 이때 각 톱날은 앞날각(α)이 예컨대 90도 이상으로 형성되어 철근(100a, 100b)이 고정부재(20a, 20b)의 내측으로는 용이하게 진입될 수 있는 반면에 고정부재(20a, 20b)의 외측으로는 이탈이 방지되는 구조를 갖는다. 여기서 널링부(212)의 구조나 형상은 특정한 것에 한정되지 않고, 철근(100a, 100b)을 견고하게 가압하여 고정할 수 있는 일체의 구조를 바람직하게 채용할 수 있다.10 is a view showing an exploded perspective view of the components mounted inside the housing 10 in the reinforced coupler, FIG. 11 is a cross-sectional view showing a cross-sectional configuration taken along line A-A' in FIG. 10, and FIG. 12 is a fixed It is a perspective view showing the external shape of the members 20a and 20b. In the drawing, the fixing members 20a and 20b are configured with a plurality of fixing pieces 21 and a coupling ring 22, respectively. The fixing piece 21 is made of a metal such as iron, for example. The fixing piece 21 has an arc shape so that it can be compressed on the outer circumferential surfaces of the reinforcing bars 100a and 200b, and is formed to decrease in width and thickness while going from one end to the other. Accordingly, as shown in FIG. 12, the fixing members 20a and 20b to which the fixing pieces 21 are coupled are formed in a substantially hollow truncated cone shape whose outer diameter gradually decreases as it goes from one side to the other. An inclined guide part 211 for guiding the reinforcing bars 100a and 100b into the fixing members 20a and 20b is formed at the front end of the fixing piece 21, that is, at the entrance side into which the reinforcing bars 100a and 100b are inserted, The inner circumferential surface of the fixing piece 21 is firmly coupled to the outer circumferential surface of the reinforcing bars (100a, 100b), especially the nodes of the reinforcing bars in the case of deformed reinforcing bars, to prevent the reinforcing bars (100a, 100b) from being separated from the fixing members (20a, 20b) A knurling unit 212 is provided for this. In this embodiment, the knurled part 212 is, for example, configured in a saw blade shape in cross section, and at this time, each saw blade has a fore edge angle α of 90 degrees or more so that the reinforcing bars 100a and 100b are fixed members 20a, While it can be easily entered into the inner side of 20b), it has a structure that prevents separation from the outer side of the fixing members (20a, 20b). Here, the structure or shape of the knurled portion 212 is not limited to a specific one, and an integrated structure capable of firmly pressing and fixing the reinforcing bars 100a and 100b may be preferably employed.
또한, 고정편(21)의 내주면에는 결합링(22)을 삽입하기 위한 링홈(213)이 형성되고, 이 링홈(213)의 대략 중앙 부분에는 결합링(22)의 돌기(221)를 끼워서 고정하기 위한 결합공(214)이 구비된다. 이 결합공(214)은 중간 부분에 단턱(214a)이 형성된다. 결합공(214)은 단턱(214a)에 의해 돌기(221)가 삽입되는 전단부에 비해 후단부의 내경이 넓게 형성된다.In addition, a ring groove 213 for inserting the coupling ring 22 is formed on the inner circumferential surface of the fixing piece 21, and a protrusion 221 of the coupling ring 22 is inserted into the approximately central portion of the ring groove 213 to be fixed. A coupling hole 214 is provided for that. In the coupling hole 214, a stepped step 214a is formed in an intermediate portion. The coupling hole 214 is formed with a wider inner diameter of the rear end portion than the front end portion into which the protrusion 221 is inserted by the stepped jaw 214a.
결합링(22)은 예컨대 수지나 합성수지로 구성된다. 결합링(22)은 바람직하게 신축성이 있는 재질로 구성된다. 결합링(22)의 외주면에는 동일한 간격을 두고 다수의 돌기(221)가 형성된다. 돌기(221)는 고정편(21)의 결합공(214)에 대응하는 위치에 설치된다. 돌기(221)의 단부, 즉 머리 부분은 다수의 돌기편(221a)으로 분할된다. 돌기(221)는 고정편(21)의 결합공(214)에 압입된다. 돌기(221)가 결합공(214)에 완전하게 삽입되면 돌기(221)가 단턱(214a)을 넘어선 후 돌기편(221a)들이 서로 이격된다. 즉, 돌기(221)는 그 머리부분의 외경이 확장되게 된다. 이에 따라 돌기(221)는 결합공(214) 내부의 단턱(214a)에 걸려서 이탈이 제한된다.The coupling ring 22 is made of resin or synthetic resin, for example. The coupling ring 22 is preferably made of an elastic material. A plurality of protrusions 221 are formed on the outer circumferential surface of the coupling ring 22 at the same distance. The protrusion 221 is installed at a position corresponding to the coupling hole 214 of the fixing piece 21. The end of the protrusion 221, that is, the head, is divided into a plurality of protrusion pieces 221a. The protrusion 221 is press-fit into the coupling hole 214 of the fixing piece 21. When the protrusion 221 is completely inserted into the coupling hole 214, the protrusion pieces 221a are spaced apart from each other after the protrusion 221 crosses the stepped jaw 214a. That is, the protrusion 221 has an outer diameter of its head to be expanded. Accordingly, the protrusion 221 is caught in the stepped jaw 214a inside the coupling hole 214, and thus the separation is limited.
제1 및 제2 탄성부재(30a, 30b)는 고정부재(20a, 20b)와 지지부재(40a, 40b)를 상호 탄력적으로 지지하기 위한 것이다. 탄성부재(30a, 30b)는 예컨대 철 등의 금속재질로 구성되는 코일 스프링 또는 압축 스프링으로 구성된다. 탄성부재(30a, 30b)는 일측의 외경과 타측의 외경이 다르게 설정될 수 있다, 바람직하게 탄성부재(30a, 30b)의 일측은 고정부재(20a, 20b)를 안정적으로 지지할 수 있도록 하우징(10)의 내경에 최대한 근접하는 외경을 갖도록 설정된다, 또한. 탄성부재(30a, 30b)의 타측은 지지부재(40a, 40b)와 결합될 수 있는 적절한 크기와 형태를 갖추게 될 것이다.The first and second elastic members 30a and 30b are for mutually elastically supporting the fixing members 20a and 20b and the support members 40a and 40b. The elastic members 30a and 30b are composed of a coil spring or a compression spring made of a metal material such as iron. The elastic members 30a, 30b may have an outer diameter of one side and an outer diameter of the other side differently set. Preferably, one side of the elastic members 30a, 30b is a housing (to stably support the fixing members 20a, 20b). It is set to have an outer diameter as close as possible to the inner diameter of 10). The other side of the elastic members 30a and 30b will have an appropriate size and shape that can be combined with the support members 40a and 40b.
제1 및 제2 지지부재(40a, 40b)는 예컨대 철 등의 금속재질로 구성된다. 지지부재(40a, 40b)는 일측에 탄성부재(30a, 30b)를 안착하기 위한 안착홈(401)이 마련되고, 타측에는 외경이 작게 설정되는 단차부(402)가 형성된다. 단차부(402)는 도 7에서 이해될 수 있는 바와 같이 제2 리브(14)를 위한 공간을 마련하기 위한 것이다. 또한, 지지부재(40a, 40b)는 중앙 부분에 예컨대 직결나사 등의 체결봉을 결합하기 위한 나사공(403)이 형성된다. 이 나사공(403)은 본 철근 커플러의 조립을 위한 것으로서, 이에 대해서는 이후에 보다 구체적으로 설명될 것이다.The first and second support members 40a and 40b are made of, for example, a metal material such as iron. The support members 40a and 40b are provided with a seating groove 401 for seating the elastic members 30a and 30b on one side, and a stepped portion 402 having a small outer diameter is formed on the other side. The step portion 402 is for providing a space for the second rib 14 as can be understood from FIG. 7. In addition, the support members 40a and 40b are formed with a screw hole 403 for coupling a fastening rod such as a direct screw or the like in the central portion. This screw hole 403 is for assembly of the present reinforcing bar coupler, which will be described in more detail later.
상기 철근 커플러는 제1 및 제2 철근(100a, 100b)을 서로 연결하거나 제1 또는 제2 철근(100a, 100b)을 고정하기 위해 사용된다. 철근 커플러에는 제1 및 제2 삽입구(11, 12)를 통해 철근(100a, 100b)이 삽입되어 고정된다. 우선, 철근(100a, 100b)이 삽입되지 않은 상태에서, 제1 및 제2 지지부재(40a, 40b)는 탄성부재(30a, 30b)에 의해 상호 내측 방향으로 가압되므로 제1 및 제2 지지부재(40a, 40b)는 하우징(10)의 중앙 부분에서 제2 리브(14)에 밀착되어 배치되게 된다, 그리고 제1 및 제2 고정부재(20a, 20b)는 제1 및 제2 탄성부재(30a, 30b)에 의해 각각 외측 방향으로 가압되어 각각 제1 및 제2 삽입구(11, 12)에 근접한 위치에 배치되게 된다.The reinforcing bar coupler is used to connect the first and second reinforcing bars 100a and 100b to each other or to fix the first or second reinforcing bars 100a and 100b. Reinforcing bars (100a, 100b) are inserted and fixed to the reinforcing bar coupler through the first and second insertion ports (11, 12). First, in a state in which the reinforcing bars 100a and 100b are not inserted, the first and second supporting members 40a and 40b are pressed in the mutually inward direction by the elastic members 30a and 30b, so that the first and second supporting members (40a, 40b) is arranged in close contact with the second rib 14 in the central portion of the housing 10, and the first and second fixing members 20a, 20b are the first and second elastic members 30a , 30b) are pressed in the outer direction, respectively, and disposed in positions close to the first and second insertion ports 11 and 12, respectively.
삽입구(11, 12)을 통해 철근(100a, 100b)을 삽입하게 되면, 철근(100a, 100b)은 도 9 및 도 11에서 고정편(21)의 안내부(211)를 따라 고정부재(20a, 20b)의 내측으로 진입하게 된다. 철근(100a, 100b)이 고정부재(20a, 20b)에 진입할 때, 고정부재(20a, 20b)에 대한 철근(100a, 100b)의 가압력이 탄성부재(30a, 30b)에 의한 가압력 보다 크다면 고정부재(20a, 20b)는 하우징(10)의 경사부(50)를 따라 내측으로 슬라이드 이동하게 된다. 고정부재(20a, 20b)의 이동량은 철근(100a, 100b)의 직경과 관련이 있다, 본 철근 커플러는 다양한 직경의 철근을 연결 또는 고정하는데 사용될 수 있다, 철근(100a, 100b)의 직경이 클수록 고정부재(20a, 20b)가 하우징(10)의 내측으로 보다 이동하면서 고정부재(20a, 20b)의 내경이 확대될 것이다. 또한, 고정부재(20a, 20b)의 내경이 확대되면 각 고정편(21)들을 결합하고 있는 결합링(22)은 신장되거나 파괴될 것이다. 상기한 바와 같이, 결합링(22)은 고정부재(20a, 20b)를 단지 안정적으로 조립하기 위한 것이다.When the reinforcing bars (100a, 100b) are inserted through the insertion holes (11, 12), the reinforcing bars (100a, 100b) are fixed members (20a, 20a, 100b) along the guide portion (211) of the fixing piece (21) in FIGS. 9 and 11 It enters the inside of 20b). When the reinforcing bars (100a, 100b) enter the fixing members (20a, 20b), if the pressing force of the reinforcing bars (100a, 100b) against the fixing members (20a, 20b) is greater than the pressing force by the elastic members (30a, 30b) The fixing members 20a and 20b slide inward along the inclined portion 50 of the housing 10. The amount of movement of the fixing members 20a and 20b is related to the diameter of the reinforcing bars 100a and 100b. This reinforcing bar coupler can be used to connect or fix reinforcing bars of various diameters, the larger the diameter of the reinforcing bars 100a and 100b. As the fixing members 20a and 20b move more toward the inside of the housing 10, the inner diameters of the fixing members 20a and 20b will be enlarged. In addition, when the inner diameter of the fixing members 20a and 20b is enlarged, the coupling ring 22 that couples the fixing pieces 21 will be elongated or destroyed. As described above, the coupling ring 22 is only for stably assembling the fixing members 20a and 20b.
고정부재(20a, 20b)는 탄성부재(30a, 30b)에 의해 삽입구(11, 12) 측으로 가압된다. 상기한 바와 같이 고정부재(20a, 20b)는 하우징(10)의 경사부(50)에 내접하게 배치된다. 따라서 고정부재(20a, 20b)가 삽입구(11, 12)측으로 가압되면 고정부재(20a, 20b)의 내경이 축소되면서 고정부재(20a, 20b)가 철근(100a, 100b)의 외주면을 강하게 압박하게 된다. 고정부재(20a, 20b)를 구성하는 고정편(21)의 내주면에는 널링부(12)가 구비된다, 고정부재(20a, 20b)가 철근(100a, 100b)을 압박하게 되면 널링부(12)가 철근(100a, 100b)의 외주면, 특히 이형철근의 마디 부분과 강하게 밀착 결합되어 철근 커플러로부터 철근(100a, 100b)이 이탈되는 것이 방지된다,The fixing members 20a and 20b are pressed toward the insertion ports 11 and 12 by the elastic members 30a and 30b. As described above, the fixing members 20a and 20b are disposed inwardly to the inclined portion 50 of the housing 10. Therefore, when the fixing members (20a, 20b) are pressed toward the insertion ports (11, 12), the inner diameter of the fixing members (20a, 20b) is reduced so that the fixing members (20a, 20b) strongly press the outer peripheral surfaces of the reinforcing bars (100a, 100b). do. A knurled part 12 is provided on the inner circumferential surface of the fixing piece 21 constituting the fixing members 20a and 20b. When the fixing members 20a and 20b press the reinforcing bars 100a and 100b, the knurling part 12 The outer circumferential surface of the reinforcing bars (100a, 100b), in particular, is tightly coupled with the joints of the deformed reinforcing bars to prevent separation of the reinforcing bars (100a, 100b) from the rebar coupler,
철근 커플러는 예컨대 콘크리트층에 매립되어 설치된다. 상기 실시 예의 철근 커플러는 외주면에 제1 및 제2 리브(13, 14)가 구비된다. 이들 리브(13, 14)는 하우징(10)의 표면적을 증대시킴으로써 콘크리트층과 철근 커플러의 결합력을 제고하게 된다.Reinforced couplers are installed, for example, embedded in a concrete layer. The reinforcing bar coupler of the above embodiment is provided with first and second ribs 13 and 14 on the outer circumferential surface. These ribs 13 and 14 increase the surface area of the housing 10, thereby enhancing the bonding force between the concrete layer and the rebar coupler.
이어, 본 발명에 따른 철근 커플러의 제조방법을 설명한다. 도 13 내지 도 18은 본 발명의 일 실시 예에 따른 철근 커플러의 제조방법을 설명하기 위한 공정별 단면도이다. 철근 커플러를 제조하는 경우에는 우선 통상적인 방법을 이용하여 각 내부 구성, 즉 고정부재(20a, 20b)를 구성하기 위한 고정편(21)들과 결합링(22), 탄성부재(30a, 30b) 및 지지부재(40a, 40b)를 생성함과 더불어, 하우징(10)을 형성하기 위한 제1 몸체(10a)와 제2 몸체(10b)를 생성한다. 이때, 제1 및 제2 몸체(10a, 10b)의 일측 단부에는 각각 제1 및 제2 삽입구(11, 12)가 형성되고, 그 외주면에는 제1 리브(13)가 형성된다. 또한, 상기 제1 및 제2 몸체(10a, 10b)는 그 강도 및 인성을 보다 보강하기 위해 열처리될 수 있다.Next, a method of manufacturing a reinforced coupler according to the present invention will be described. 13 to 18 are cross-sectional views for each process for explaining a method of manufacturing a reinforced coupler according to an embodiment of the present invention. In the case of manufacturing a reinforced coupler, first, each internal configuration, that is, fixing members (20a, 20b) for constituting the fixing members (20a, 20b), and the coupling ring (22), elastic members (30a, 30b) using a conventional method. And while generating the support members (40a, 40b), a first body (10a) and a second body (10b) for forming the housing 10 are created. At this time, first and second insertion holes 11 and 12 are formed at one end of the first and second bodies 10a and 10b, respectively, and a first rib 13 is formed on the outer circumferential surface thereof. In addition, the first and second bodies 10a and 10b may be heat treated to further reinforce their strength and toughness.
이어, 결합링(22)을 이용하여 고정편(21)들을 결합함으로써 도 12와 같이 고정부재(20a, 20b)를 구성하고, 도 14에 나타낸 바와 같이 제1 몸체(10a)의 내측에 순차적으로 제1 고정부재(20a)와 제1 탄성부재(30a) 및 제1 지지부재(40a)를 삽입한다. 도면에 구체적으로 나타내지는 않았으나, 제2 몸체(10b)의 내측에도 순차적으로 제2 고정부재(20b)와 제2 탄성부재(30b) 및 제2 지지부재(40b)를 삽입한다.Subsequently, by combining the fixing pieces 21 using the coupling ring 22, the fixing members 20a and 20b are configured as shown in FIG. 12, and as shown in FIG. 14, sequentially inside the first body 10a. The first fixing member 20a, the first elastic member 30a, and the first support member 40a are inserted. Although not specifically shown in the drawings, the second fixing member 20b, the second elastic member 30b, and the second support member 40b are sequentially inserted into the second body 10b.
다음, 도 15 및 도 16에 나타낸 바와 같이, 제1 몸체(10a)의 삽입구(11)측으로 와셔(300)를 통해 체결봉(200)을 삽입하여 제1 지지부재(40a)의 나사공(403)에 체결한다. 이때, 체결봉(200)을 나사공(403)에 체결함에 따라 제1 지지부재(40a)는 제1 탄성부재(30a)를 압축하면서 제1 몸체(10a)의 내측으로 진입하게 된다, 또한, 이러한 과정을 제2 몸체(10b)에 대해서도 동일하게 실시한다,Next, as shown in Figs. 15 and 16, the fastening rod 200 is inserted through the washer 300 toward the insertion hole 11 of the first body 10a, and the screw hole 403 of the first support member 40a. ). At this time, as the fastening rod 200 is fastened to the screw hole 403, the first support member 40a enters the inside of the first body 10a while compressing the first elastic member 30a. This process is carried out in the same way for the second body 10b,
이어, 도 17에 나타낸 바와 같이 제1 몸체(10a)와 제2 몸체(10b)를 그 단부가 상호 접촉되도록 배치한다. 이때, 제1 및 제2 지지부재(40a, 40b)는 각각 삽입구(11, 12) 방향으로 압축되므로 제1 및 제2 지지부재(40a, 40b)는 서로 이격되게 배치된다. 그리고 이 상태에서 제1 몸체(10a)와 제2 몸체(10b)를 일체적으로 융착시킨다. 제1 몸체(10a)와 제2 몸체(10b)의 융착 방법으로서는 예컨대 제1 및 제2 몸체(10a, 10b)를 상호 가압하면서 제1 몸체(10a)에 대해 제2 몸체(10b)를 고속으로 회전시키거나 제2 몸체(10b)에 대해 제1 몸체(10a)를 고속으로 회전시키는 마찰용접이 바람직하게 채용될 수 있다, 제1 몸체(10a) 또는 제2 몸체(10b)를 고속으로 회전시키게 되면, 서로 밀착되어 있는 제1 및 제2 몸체(10a, 10b)의 단부의 선단면에서 마찰에 의해 다량의 열이 발생하게 되고, 이 열에 의해 제1 및 제2 몸체(10a, 10b)의 선단부가 점진적으로 융착된다, 또한, 이러한 융착 과정에서 용융된 금속 물질이 그 경계면에 응축됨으로써 도 18에 나타낸 바와 같이 철근 커플러의 중앙 부분에 제2 리브(14)가 자연스럽게 생성되게 된다,Subsequently, as shown in FIG. 17, the first body 10a and the second body 10b are arranged so that their ends are in contact with each other. At this time, since the first and second support members 40a and 40b are compressed in the direction of the insertion ports 11 and 12, respectively, the first and second support members 40a and 40b are disposed to be spaced apart from each other. And in this state, the first body 10a and the second body 10b are integrally fused together. As a method of fusing the first body 10a and the second body 10b, for example, the second body 10b is pressed against the first body 10a at high speed while mutually pressing the first and second bodies 10a and 10b. Friction welding to rotate or to rotate the first body (10a) with respect to the second body (10b) at high speed may be preferably employed, to rotate the first body (10a) or the second body (10b) at high speed. Then, a large amount of heat is generated by friction at the front end surfaces of the ends of the first and second bodies 10a and 10b that are in close contact with each other, and by this heat, the front ends of the first and second bodies 10a and 10b Is gradually fused. In addition, the second rib 14 is naturally generated in the central portion of the reinforcing bar coupler as shown in FIG. 18 by condensing the molten metal material on the interface during this fusion process.
그리고 상기한 작업이 모두 종료되면 철근 커플러로부터 체결봉(200)과 와셔(300)를 제거함으로써 철근 커플러에 대한 조립 및 제조를 완료하게 된다.And when all of the above operations are completed, the assembly and manufacturing of the reinforced coupler are completed by removing the fastening rod 200 and the washer 300 from the reinforced coupler.
상기 실시 예에 있어서는 철근 커플러의 하우징(10)이 제1 몸체(10a)와 제2 몸체(10b)의 융착을 통해 일체적으로 형성된다. 따라서, 종래와 달리 제1 몸체(10a)와 제2 몸체(10b)를 결합하기 위한 나사부 등의 결합 구조가 불필요하게 되므로 철근 커플러의 크기와 무게를 대폭 줄일 수 있음은 물론, 그 제조시간을 대폭 단축할 수 있게 된다,In the above embodiment, the housing 10 of the reinforced coupler is integrally formed through fusion bonding between the first body 10a and the second body 10b. Therefore, unlike the prior art, since a coupling structure such as a screw portion for coupling the first body 10a and the second body 10b becomes unnecessary, the size and weight of the reinforcing bar coupler can be greatly reduced, as well as the manufacturing time thereof. Can be shortened,
또한, 철근 커플러의 외주면에 제1 및 제2 리브(13, 14)가 구비되어 철근 커플러의 강도 및 인성이 제고되므로 철근 커플러를 구성하는 하우징의 두께를 더욱 줄일 수 있게 되고, 하우징에 대한 열처리 작업을 생략하는 등의 부가적인 효과를 기대할 수 있다.In addition, since the first and second ribs 13 and 14 are provided on the outer circumferential surface of the rebar coupler to improve the strength and toughness of the rebar coupler, the thickness of the housing constituting the rebar coupler can be further reduced, and heat treatment work on the housing Additional effects such as omission of can be expected.
또한, 본 발명은 상기 실시 예에 한정되지 않고 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양하게 변형시켜 실시할 수 있다. 예를 들어, 상기 실시 예에서 제1 및 제2 몸체(10a, 10b)의 상호 융착되는 단부의 형상은 특정한 것에 한정되지 않고 필요에 따라 적절하게 변형시켜 실시할 수 있다,In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical spirit of the present invention. For example, in the above embodiment, the shape of the ends to be fused to each other of the first and second bodies 10a and 10b is not limited to a specific one and may be appropriately modified as necessary.
도 19는 제1 및 제2 몸체(10a, 10b)의 단부의 다른 구성 예를 나타낸 단면도이다, 또한, 도 19에서 상술한 상술한 실시 예와 실질적으로 동일한 부분에는 동일한 참조번호가 부가되어 있다. 19 is a cross-sectional view showing another configuration example of the ends of the first and second bodies 10a and 10b, and the same reference numerals are added to portions substantially the same as those of the above-described embodiment described above in FIG. 19.
도 19에서 제1 및 제2 몸체(10a, 10b)의 타측 단부, 즉 상호 대향하는 단부에는 상호 대응되는 형상을 갖는 단차부(101, 102)가 각각 형성된다. 본 예에서는 예컨대 제1 몸체(10a)는 단부 내측면에 단차부(101)가 형성되고, 제2 몸체(10b)는 단부 외측면에 단차부(102)가 형성된다, 물론, 제1 및 제2 몸체(10a, 10b)에 형성되는 단차부(101. 102)는 서로 교대하여 형성될 수 있다, 바람직하게 단차부(101, 102)를 형성할 때에는 도 20에 나타낸 바와 같이 단차부(101, 102)의 길이는 서로 동일하면서, 제1 몸체(10a)와 제2 몸체(10b)를 사로 맞물리는 경우 상측 단차부(101)와 하측 단차부(102) 사이에 일정한 유격(d1)을 갖도록 형성된다,In FIG. 19, step portions 101 and 102 having a shape corresponding to each other are formed at the other end portions of the first and second bodies 10a and 10b, that is, opposite ends. In this example, for example, the first body 10a has a step portion 101 formed on the inner side of the end, and the second body 10b has a step 102 formed on the outer side of the end, of course, the first and the first 2 The step portions 101 and 102 formed on the bodies 10a and 10b may be formed to alternate with each other. Preferably, when forming the step portions 101 and 102, as shown in FIG. The lengths of 102) are the same, and when the first body 10a and the second body 10b are engaged with each other, the upper step 101 and the lower step 102 have a certain clearance d1. do,
상술한 실시 예에서 제1 몸체(10a)와 제2 몸체(10b) 사이의 융착 속도 및 융착 정도는 제1 몸체(10a)와 제2 몸체(10b) 사이의 상대 회전 속도에 의해 설정될 것이다. 그러나 본 실시 예에서는 상기 유격(d1)의 크기 조정을 통해 제1 몸체(10a)와 제2 몸체(10b) 사이의 접촉 면적을 조정함으로써 제1 몸체(10a)와 제2 몸체(10b) 사이의 융착 속도 및 융착 정도를 조절할 수 있다,In the above-described embodiment, the fusion speed and degree of fusion between the first body 10a and the second body 10b will be set by the relative rotation speed between the first body 10a and the second body 10b. However, in this embodiment, by adjusting the contact area between the first body 10a and the second body 10b through the size adjustment of the clearance d1, the contact area between the first body 10a and the second body 10b The speed and degree of fusion can be adjusted,
또한, 도 21은 제1 및 제2 몸체(10a, 10b)의 단부의 또 다른 구성 예를 나타낸 단면도로서, 이는 도 20에 대응하는 것이다, 또한, 도 22는 도 21의 구성을 이용하여 하우징(10)을 구성한 경우의 철근 커플러의 단면 구성을 나타낸 단면도이다. 도 12의 구성 예에서는 제1 몸체(10a)의 단차부(101)와 제2 몸체(10b)의 단차부(102)의 길이가 동일하게 설정된다. 이에 대해 본 구성 예에서는 하우징(10)의 내주면에 대응하는 단차부(102)의 길이가 다른 것에 비해 작게 설정된다. 이때 단차부(102)의 축소되는 길이(d2)는 제1 및 제2 몸체(10a, 10b)의 융착량 및 융착 시간에 따라 적절하게 설정될 것이다. 이와 같이 하게 되면 제1 및 제2 몸체(10a, 10b)를 융착하여 하우징을 형성할 때, 도 22에 나타낸 바와 같이 하우징(10)의 외주면에만 제2 리브(14a)가 형성되게 된다. 또한, 이 경우 제1 및 제2 지지부재(40a, 40b)의 단차부(402)는 생략될 수 있을 것이다.In addition, FIG. 21 is a cross-sectional view showing another configuration example of the ends of the first and second bodies 10a, 10b, which corresponds to FIG. 20, and FIG. 22 is a housing ( It is a cross-sectional view showing the cross-sectional configuration of a reinforcing bar coupler when 10) is configured. In the configuration example of FIG. 12, the lengths of the step portion 101 of the first body 10a and the step portion 102 of the second body 10b are set to be the same. On the other hand, in this configuration example, the length of the step portion 102 corresponding to the inner circumferential surface of the housing 10 is set smaller than that of the others. At this time, the reduced length d2 of the step portion 102 will be appropriately set according to the fusion amount and fusion time of the first and second bodies 10a and 10b. In this way, when forming the housing by fusion bonding the first and second bodies 10a and 10b, the second rib 14a is formed only on the outer peripheral surface of the housing 10 as shown in FIG. 22. Further, in this case, the stepped portions 402 of the first and second support members 40a and 40b may be omitted.
또한, 상술한 실시 예에서 제2 리브(14a)는 필요에 따라 제거하여 생략할 수 있다.In addition, in the above-described embodiment, the second rib 14a may be removed and omitted if necessary.
또한, 상술한 실시 예에서 제1 몸체(10a)와 제2 몸체(10b)를 융착하는 방법으로서 마찰용접을 예로 들어 설명하였다. 그러나 제1 몸체(10a)와 제2 몸체(10b)의 융착에는 마찰용접 이외에 전기저항 용접 등 다른 적절한 용접 방법을 바람직하게 채용할 수 있다.In addition, in the above-described embodiment, as a method of fusing the first body 10a and the second body 10b, friction welding has been described as an example. However, for the fusion of the first body 10a and the second body 10b, other suitable welding methods such as electric resistance welding in addition to friction welding may be preferably employed.
또한, 상술한 실시 예에 있어서는 도 10에서 고정부재(20a, 20b)를 구성할 때 고정편(21)의 내주면에 링홈(213)을 형성하는 것으로 설명하였으나, 고정부재(20a, 20b)를 형성하기 위한 링홈은 고정편(21)의 외주면에 형성하는 것도 가능하다. 이 경우에는 결합링(22)은 고정부재(20a, 20b)의 외주면에 결합되고, 돌기(221)는 결합링(22)의 내주면에 형성되게 될 것이다. In addition, in the above-described embodiment, when configuring the fixing members 20a, 20b in FIG. 10, it has been described that the ring groove 213 is formed on the inner circumferential surface of the fixing piece 21, but the fixing members 20a and 20b are formed. It is also possible to form the ring groove to be formed on the outer peripheral surface of the fixing piece (21). In this case, the coupling ring 22 is coupled to the outer circumferential surface of the fixing members 20a and 20b, and the protrusion 221 will be formed on the inner circumferential surface of the coupling ring 22.
상기한 구성으로 된 본 발명에 의하면, 철근 커플러의 하우징이 일체적으로 형성되고, 하우징의 외주면에 제1 및 제2 리브가 구비된다. 이들 리브는 하우징의 표면적을 증대시킴으로써 콘크리트층과 철근 커플러의 결합력을 제고하게 된다. 또한, 하우징이 제1 몸체와 제2 몸체의 융착을 통해 일체적으로 형성되어 제1 몸체와 제2 몸체를 결합하기 위한 나사부 등의 결합 구조가 불필요하게 되므로 철근 커플러의 크기와 무게를 대폭 줄일 수 있음은 물론, 그 제조시간을 대폭 단축할 수 있게 된다,According to the present invention having the above-described configuration, the housing of the reinforced coupler is integrally formed, and the first and second ribs are provided on the outer peripheral surface of the housing. These ribs increase the bonding force between the concrete layer and the rebar coupler by increasing the surface area of the housing. In addition, since the housing is integrally formed through the fusion of the first body and the second body, a coupling structure such as a threaded portion for coupling the first body and the second body is unnecessary, so the size and weight of the rebar coupler can be significantly reduced. Yes, of course, the manufacturing time can be significantly reduced.

Claims (16)

  1. 철근을 연결 또는 고정하기 위한 철근 커플러에 있어서,In the rebar coupler for connecting or fixing reinforcing bars,
    내부가 중공됨과 더불어 양측에 철근을 각각 삽입하기 위한 제1 및 제2 삽입구가 형성되는 하우징과,A housing having a hollow inside and having first and second insertion holes for inserting reinforcing bars on both sides, respectively,
    상기 하우징의 내측에 설치되고, 상기 제1 및 제2 삽입구를 통해 삽입되는 제1 및 제2 철근을 각각 고정하기 위한 제1 및 제2 고정부재,First and second fixing members installed inside the housing and for fixing first and second reinforcing bars respectively inserted through the first and second insertion ports,
    상기 제1 및 제2 고정부재를 상기 제1 및 제2 삽입구 측으로 각각 가압하기 위한 제1 및 제2 탄성부재,First and second elastic members for pressing the first and second fixing members toward the first and second insertion ports, respectively,
    상기 제1 및 제2 탄성부재를 각각 지지하기 위한 제1 및 제2 지지부재를 구비하여 구성되고,Consisting of having first and second support members for supporting each of the first and second elastic members,
    상기 하우징은 일체화된 몸체로 구성되고, 제1 및 제2 삽입구 측으로 가면서 내경이 단조적으로 감소하는 것을 특징으로 하는 철근 커플러.The housing is composed of an integrated body, the reinforced coupler, characterized in that the inner diameter monotonically decreases while going toward the first and second insertion ports.
  2. 제1항에 있어서,The method of claim 1,
    상기 하우징의 양측 외주면에는 그 길이 방향을 따라 각각 복수 개의 제1 리브가 구비되는 것을 특징으로 하는 철근 커플러.A reinforced coupler, characterized in that a plurality of first ribs are provided on both outer circumferential surfaces of the housing along a length direction thereof.
  3. 제1항에 있어서,The method of claim 1,
    상기 하우징의 외측 중앙 부분에는 원주방향을 따라 제2 리브가 형성되는 것을 특징으로 하는 철근 커플러.Reinforced coupler, characterized in that the second rib is formed along the circumferential direction in the outer central portion of the housing.
  4. 제1항 또는 제3항에 있어서,The method of claim 1 or 3,
    상기 하우징의 내측 중앙 부분에는 원주방향을 따라 제3 리브가 형성되는 것을 특징으로 하는 철근 커플러.Reinforced coupler, characterized in that the third rib is formed along the circumferential direction in the inner central portion of the housing.
  5. 제1항에 있어서,The method of claim 1,
    상기 제1 및 제2 지지부재는 중앙 부분에 나사공이 구비되는 것을 특징으로 하는 철근 커플러.The first and second support members are reinforced coupler, characterized in that a screw hole is provided in a central portion.
  6. 제1항에 있어서,The method of claim 1,
    상기 제1 및 제2 고정부재는 각각 다수의 고정편과 결합링을 구비하여 구성되고, 상기 고정편의 내주면 또는 외주면에는 결합링을 삽입하기 위한 링홈과, 돌기를 끼워서 고정하기 위한 결합공이 구비되며, The first and second fixing members are each provided with a plurality of fixing pieces and a coupling ring, and an inner circumferential surface or an outer circumferential surface of the fixing piece is provided with a ring groove for inserting a coupling ring and a coupling hole for inserting and fixing a projection,
    상기 결합링의 외주면 또는 내주면에는 상기 결합공(214)에 대응하는 위치에 돌기가 구비되는 것을 특징으로 하는 철근 커플러.Reinforced coupler, characterized in that the projection is provided at a position corresponding to the coupling hole (214) on the outer circumferential surface or the inner circumferential surface of the coupling ring.
  7. 제6항에 있어서,The method of claim 6,
    상기 결합공은 중간 부분에 단턱이 형성되고, 상기 돌기는 다수의 돌기편을 구비하는 것을 특징으로 하는 철근 커플러.A reinforced coupler, characterized in that the coupling hole has a stepped portion in the middle portion, and the protrusion has a plurality of protrusion pieces.
  8. 제6항에 있어서,The method of claim 6,
    상기 고정편의 선단부에는 철근을 고정부재 내측으로 안내하기 위한 안내부가 형성되고, 고정편의 내주면에는 고정부재로부터 철근이 이탈되는 것을 방지하기 위한 널링부가 구비되는 것을 특징으로 하는 철근 커플러.A reinforcing bar coupler, characterized in that a guide portion for guiding the reinforcing bar into the fixing member is formed at the tip of the fixing piece, and a knurling portion for preventing the reinforcing bar from being separated from the fixing member is provided on an inner circumferential surface of the fixing piece.
  9. 제8항에 있어서,The method of claim 8,
    상기 널링부는 단면이 톱날 형상으로 구성되고, 각 톱날은 앞날각이 90도 이상인 것을 특징으로 하는 철근 커플러.The knurled portion is configured in a saw blade shape in cross section, and each saw blade is a reinforced coupler, characterized in that the front blade angle is 90 degrees or more.
  10. 내부가 중공됨과 더불어 양측에 철근을 각각 삽입하기 위한 제1 및 제2 삽입구가 형성되는 하우징을 포함하고, 상기 하우징의 내측에는 상기 제1 및 제2 삽입구를 통해 삽입되는 제1 및 제2 철근을 각각 고정하기 위한 제1 및 제2 고정부재와 상기 제1 및 제2 고정부재를 상기 제1 및 제2 삽입구 측으로 각각 가압하기 위한 제1 및 제2 탄성부재 및 상기 제1 및 제2 탄성부재를 각각 지지하기 위한 제1 및 제2 지지부재를 구비하는 철근 커플러의 제조방법에 있어서,It includes a housing that is hollow inside and has first and second insertion holes for inserting reinforcing bars on both sides, respectively, and first and second reinforcing bars inserted through the first and second insertion ports inside the housing First and second fixing members for fixing, and first and second elastic members and the first and second elastic members respectively for pressing the first and second fixing members toward the first and second insertion ports, respectively. In the manufacturing method of a reinforced coupler having first and second support members for supporting each,
    내부가 중공됨과 더불어 일측 단부에는 제1 삽입구가 형성되는 제1 몸체를 형성하는 제1 몸체 형성 단계와,A first body forming step of forming a first body in which the inside is hollow and a first insertion hole is formed at one end thereof,
    내부가 중공됨과 더불어 일측 단부에는 제2 삽입구가 형성되는 제2 몸체를 형성하는 제2 몸체 형성 단계,A second body forming step of forming a second body in which the inside is hollow and a second insertion hole is formed at one end thereof,
    상기 제1 및 제2 지지부재의 중앙 부분에 제1 및 제2 나사공을 각각 형성하는 나사공 형성단계,A screw hole forming step of forming first and second screw holes respectively in the central portions of the first and second support members,
    상기 제1 몸체의 내측에 제1 고정부재와 제1 탄성부재 및 제1 지지부재를 삽입하고, 제1 삽입구 측으로 체결봉을 삽입하여 상기 제1 나사공에 체결하는 제1 몸체 체결단계,A first body fastening step of inserting a first fixing member, a first elastic member, and a first support member into the inner side of the first body, inserting a fastening rod into the first insertion port, and fastening it to the first screw hole,
    상기 제2 몸체의 내측에 제2 고정부재와 제2 탄성부재 및 제2 지지부재를 삽입하고, 제2 삽입구 측으로 체결봉을 삽입하여 상기 제2 나사공에 체결하는 제2 몸체 체결단계,A second body fastening step of inserting a second fixing member, a second elastic member, and a second supporting member into the inner side of the second body, and inserting a fastening rod into the second insertion port and fastening it to the second screw hole,
    상기 제1 몸체와 제2 몸체의 타측 단부를 상호 융착하는 하우징 형성단계 및,A housing forming step of fusing the other end of the first body and the second body to each other, and
    상기 하우징으로부터 상기 체결봉을 제거하는 체결봉 제거단계를 포함하여 구성되는 것을 특징으로 하는 철근 커플러 제조방법.A method for manufacturing a reinforced coupler, characterized in that it comprises a fastening rod removing step of removing the fastening rod from the housing.
  11. 제10항에 있어서,The method of claim 10,
    상기 하우징 형성단계는 마찰용접을 통해 실행하는 것을 특징으로 하는 철근 커플러 제조방법.The step of forming the housing is a method of manufacturing a reinforced coupler, characterized in that it is carried out through friction welding.
  12. 제10항에 있어서,The method of claim 10,
    상기 제1 및 제2 몸체를 열처리하는 단계를 추가로 구비하여 구성되는 것을 특징으로 하는 철근 커플러 제조방법.A method for manufacturing a reinforced coupler, characterized in that further comprising the step of heat-treating the first and second bodies.
  13. 제10항에 있어서,The method of claim 10,
    상기 제1 몸체의 타측 단부에는 제1 단차부가 구비되고, 상기 제2 몸체의 타측 단부에는 상기 제1 단차부와 대향하는 형상을 갖는 제2 단차부가 구비되는 것을 특징으로 하는 철근 커플러의 제조방법,A method of manufacturing a reinforced coupler, characterized in that a first step portion is provided at the other end of the first body, and a second step portion having a shape opposite to the first step is provided at the other end of the second body,
  14. 제13항에 있어서,The method of claim 13,
    상기 제1 및 제2 단차부는 길이가 서로 동일하고, 제1 및 제2 단차부를 맞물릴 때 제1 및 제2 단차부 사이에 유격이 형성되는 것을 특징으로 하는 철근 커플러 제조방법.The first and second stepped portions have the same length, and when the first and second stepped portions are engaged, a gap is formed between the first and second stepped portions.
  15. 제13항에 있어서,The method of claim 13,
    상기 제1 및 제2 단차부는 내주면에 배치되는 단차부의 길이가 다른 것에 비해 짧게 형성되는 것을 특징으로 하는 철근 커플러 제조방법.The first and second stepped portions, characterized in that the length of the stepped portion disposed on the inner circumferential surface is shorter than that of other rebar coupler manufacturing method.
  16. 제10항에 있어서,The method of claim 10,
    상기 제1 및 제2 몸체 형성단계에서 제1 및 제2 몸체의 외주연에 각각 길이 방향을 따라 리브를 형성하는 것을 특징으로 하는 철근 커플러 제조방법.A method of manufacturing a reinforced coupler, characterized in that, in the first and second body forming steps, ribs are formed along the length directions, respectively, on the outer peripheries of the first and second bodies.
PCT/KR2020/006192 2019-05-13 2020-05-11 Reinforcing bar coupler and method for manufacturing same WO2020231133A1 (en)

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KR20190055703 2019-05-13
KR10-2019-0055703 2019-05-13
KR1020200039892A KR102328136B1 (en) 2019-05-13 2020-04-01 Manufacturing Method of Steel Reinforcing Coupler
KR10-2020-0039892 2020-04-01

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KR101565468B1 (en) * 2015-05-18 2015-11-03 김홍남 one-touch rebar coupling apparatus
KR101573735B1 (en) * 2014-08-18 2015-12-02 대한특수금속 주식회사 Coupler for thread bar
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KR20070077895A (en) * 2006-01-25 2007-07-30 김용근 Reinforcing bar coupler
KR101573735B1 (en) * 2014-08-18 2015-12-02 대한특수금속 주식회사 Coupler for thread bar
KR101565468B1 (en) * 2015-05-18 2015-11-03 김홍남 one-touch rebar coupling apparatus
KR101873114B1 (en) * 2016-10-31 2018-06-29 하재식 Coupler for prestressing strand
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* Cited by examiner, † Cited by third party
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CN112962867A (en) * 2021-02-08 2021-06-15 于洪强 Steel bar connecting device

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