WO2020231133A1 - Dispositif d'accouplement de barres d'armature et son procédé de fabrication - Google Patents

Dispositif d'accouplement de barres d'armature et son procédé de fabrication 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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Prior art keywords
fixing
housing
coupler
members
reinforcing bars
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PCT/KR2020/006192
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English (en)
Korean (ko)
Inventor
임민섭
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임민섭
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Publication date
Priority claimed from KR1020200039892A external-priority patent/KR102328136B1/ko
Application filed by 임민섭 filed Critical 임민섭
Publication of WO2020231133A1 publication Critical patent/WO2020231133A1/fr

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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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  • Architecture (AREA)
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  • Reinforcement Elements For Buildings (AREA)

Abstract

La présente invention concerne un dispositif d'accouplement de barres d'armature léger et de petite taille et présentant un coût de fabrication réduit, ainsi qu'un procédé de fabrication de ce dispositif. Le dispositif d'accouplement de barres d'armature selon la présente invention permet de relier ou de fixer des barres d'armature et comprend : un boîtier ayant un intérieur creux et présentant des premier et second orifices d'insertion permettant d'insérer des barres d'armature sur les deux côtés de celui-ci ; des premier et second éléments de fixation, placés à l'intérieur du boîtier, pour fixer respectivement des première et seconde barres d'armature qui sont insérées à travers les premier et second orifices d'insertion ; des premier et second éléments élastiques pour presser les premier et second éléments de fixation vers les premier et second orifices d'insertion, respectivement ; et des premier et second éléments de support pour supporter les premier et second éléments élastiques, respectivement, le boîtier étant composé d'un corps intégré et étant caractérisé en ce que son diamètre intérieur diminue de façon monotone en direction des premier et second orifices d'insertion.
PCT/KR2020/006192 2019-05-13 2020-05-11 Dispositif d'accouplement de barres d'armature et son procédé de fabrication WO2020231133A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20190055703 2019-05-13
KR10-2019-0055703 2019-05-13
KR1020200039892A KR102328136B1 (ko) 2019-05-13 2020-04-01 철근 커플러의 제조방법
KR10-2020-0039892 2020-04-01

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WO2020231133A1 true WO2020231133A1 (fr) 2020-11-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112962867A (zh) * 2021-02-08 2021-06-15 于洪强 钢筋连接装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002227343A (ja) * 2001-02-02 2002-08-14 Ps Corp Ｐｃ鋼棒の係着装置、連結装置および定着装置
KR20070077895A (ko) * 2006-01-25 2007-07-30 김용근 철근 연결구
KR101565468B1 (ko) * 2015-05-18 2015-11-03 김홍남 원터치식 철근 결합장치
KR101573735B1 (ko) * 2014-08-18 2015-12-02 대한특수금속 주식회사 나사형철근용 커플러
KR101873114B1 (ko) * 2016-10-31 2018-06-29 하재식 강연선 연결용 커플러
KR101888396B1 (ko) * 2018-01-25 2018-08-14 김태원 철근연결용 커플링

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002227343A (ja) * 2001-02-02 2002-08-14 Ps Corp Ｐｃ鋼棒の係着装置、連結装置および定着装置
KR20070077895A (ko) * 2006-01-25 2007-07-30 김용근 철근 연결구
KR101573735B1 (ko) * 2014-08-18 2015-12-02 대한특수금속 주식회사 나사형철근용 커플러
KR101565468B1 (ko) * 2015-05-18 2015-11-03 김홍남 원터치식 철근 결합장치
KR101873114B1 (ko) * 2016-10-31 2018-06-29 하재식 강연선 연결용 커플러
KR101888396B1 (ko) * 2018-01-25 2018-08-14 김태원 철근연결용 커플링

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112962867A (zh) * 2021-02-08 2021-06-15 于洪强 钢筋连接装置

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