CN110832151B - One touch type steel bar connector - Google Patents
One touch type steel bar connector Download PDFInfo
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- CN110832151B CN110832151B CN201980002379.0A CN201980002379A CN110832151B CN 110832151 B CN110832151 B CN 110832151B CN 201980002379 A CN201980002379 A CN 201980002379A CN 110832151 B CN110832151 B CN 110832151B
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- circumferential surface
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- 229910000831 Steel Inorganic materials 0.000 title description 6
- 239000010959 steel Substances 0.000 title description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 138
- 238000003780 insertion Methods 0.000 claims abstract description 23
- 230000037431 insertion Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims description 74
- 230000008878 coupling Effects 0.000 claims description 73
- 238000005859 coupling reaction Methods 0.000 claims description 73
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 8
- 239000004567 concrete Substances 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- 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
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The one-touch reinforcing bar coupler according to the present invention has a coupler body formed with a hollow having a first tapered portion and a second tapered portion which are gradually expanded from both side insertion ports into which reinforcing bars are inserted, and a part input port formed on an outer circumferential surface of the coupler body, a first tightening unit inserted into the first tapered portion of the hollow through the part input port of the coupler body, a second tightening unit inserted into the second tapered portion of the hollow through the part input port of the coupler body, a support member for supporting an end portion of the reinforcing bars provided and engaged inside the coupler body, a support member fixing portion fixing the support member with respect to the coupler body, and springs are supported by the support members, respectively, to elastically bias the first tightening unit and the second tightening unit toward the first tapered portion and the second tapered portion, respectively.
Description
Technical Field
The present invention relates to a reinforcing bar coupler, and more particularly, to a one-touch reinforcing bar coupler in which a coupler body for coupling reinforcing bars and a reinforcing bar support structure are improved when a building is constructed.
Background
Generally, concrete has a characteristic of easily causing cracks because it has a relatively low tensile length as compared with a compressive strength, although it has a relatively high compressive strength as a composite composition in which cement, sand, gravel, water, and the like are mixed at an appropriate ratio. In order to reinforce the strength of the concrete (compensate for the tensile length) as described above, tendons (reinforcing bars) are placed in a mold (Formwork) in which the concrete is poured.
The conventional reinforced concrete structure is not only capable of constructing various forms of structures due to its excellent compression and tensile strength, but also widely used in various buildings and civil engineering due to its excellent physical properties.
For such reinforcing bars, a reinforcing operation is performed when constructing a building and a concrete structure for various civil works, and since the reinforcing bars are manufactured in standardized lengths, an operation of connecting predetermined lengths of reinforcing bars to each other is required at the time of the reinforcing operation.
As a connecting method for connecting reinforcing bars in usual reinforcement, a lap joint method, a welding joint method, a screw joint method, a connecting device joint method, and the like have been proposed. The overlap coupling method is a method of binding wires at ends of the reinforcing bars overlapped with each other to connect them to each other, and has an advantage of relatively easily accomplishing a reinforcing operation, but not only makes the operation cumbersome, but also is pointed out a problem in safety because a bending strength of a connection portion is weak because it is necessary to bind wires to each of the reinforcing bars.
Further, korean registered patent No. 101643846 (2016.07.22.) discloses a one-touch automatic coupling. Further, korean registered patent No. 101102531 (2011.12.28) discloses a one-touch quick coupling for a rebar coupling.
The disclosed quick coupling proposes a structure in which a pair of guide plates are provided between screw-engaged bodies to support the ends of the springs or the reinforcing bars.
Further, a coupling for connecting reinforcing bars is disclosed in korean registered patent No. 101768816, and a one-touch type reinforcing bar coupling is disclosed in korean registered patent No. 101654150 (2016.08.30). The disclosed one-touch bar coupler has a plate body having a support plate inserted into a coupler body, an elastic member biasing both sides of the plate body in a direction away from each other, and a support plate disposed between the elastic members.
The conventional reinforcing bar coupler as described above has a structure in which guide plates or support plates, which are coupled between pieces holding reinforcing bars or between jacket members to support both end portions of the reinforcing bars, are simply inserted, and thus there is a problem in that end portions of the reinforcing bars coupled to each other at a central portion in a longitudinal direction of a coupler body cannot be fixed.
In particular, in the case where the depth to which the reinforcing bars of one side engaged with each other are inserted becomes relatively deep, the positions of the guide plates or the support plates are moved toward one side, so that both end portions of the reinforcing bars cannot be correctly positioned at the central portion. In this case, the grip of the engaged reinforcing bars may be biased to one side, possibly resulting in a decrease in the engaging force.
One-touch automatic coupling is disclosed in korean registered patent No. 10-1643846, and one-touch rebar coupling is disclosed in korean registered patent No. 10-1602399. The disclosed automatic coupling is provided with a hollow portion formed with both end portions open and a tapered portion formed at an upper end portion of the hollow portion with an inner diameter gradually increasing from an outer side toward an inner side in an axial direction, and has a pair of coupling bodies engaged with a screw.
This reinforcing bar coupler has a structure in which bodies of the coupler are screwed to each other to provide a fastening force, and thus has a problem in that workability is relatively low and interference is caused by an inner tightening member when the reinforcing bar is inserted.
Korean laid-open patent No. 2013-0143331 discloses a rebar coupling. The disclosed coupling has a sleeve and a connecting member, wherein the inside of the sleeve has a hollow portion along with an end portion in a length direction so that a reinforcing bar is inserted into the hollow portion through the end portion, an outer circumferential surface of the sleeve has at least one opening exposing the hollow portion, an inner side surface of the connecting member has a plurality of node grooves formed thereon so that nodes (knuckles) of the reinforcing bar are inserted, and the connecting member is clamped between the outer circumferential surface of the reinforcing bar inserted into the hollow portion of the sleeve and an inner circumferential surface of the sleeve.
The conventional reinforcing bar coupler has a problem in that the gripping force is relatively weak and the amount of slippage of the reinforcing bar is increased because the gripping force is generated by the engagement member.
Disclosure of Invention
Solves the technical problem
In order to solve the problems as described above, the present invention provides a one-touch reinforcing bar coupler capable of simplifying a coupling operation of reinforcing bars and preventing a coupling portion of the reinforcing bars from being biased toward one side by supporting the reinforcing bars coupled to each other by a support member provided at a central portion of a coupler body.
Another object of the present invention is to provide a one-touch reinforcing bar coupler which can reduce the operation cost required for the coupling of conventional coupler bodies to each other because the coupler body is constructed of a single member, and can fundamentally reduce the fraction defective due to the processing because no machining is required, and can improve the phase and productivity.
It is still another object of the present invention to provide a one-touch type reinforcing bar coupler which can smoothly insert reinforcing bars by reducing interference when inserting reinforcing bars to be coupled into a coupler body, and can provide a close contact force of a jaw functioning as a wedge with the reinforcing bars by a traction force of the reinforcing bars, thereby improving reliability of holding the reinforcing bars.
Means for solving the problems
The one-touch reinforcing bar coupler of the present invention for solving the above technical problems includes a coupler body, a first tightening unit, a second tightening unit, a support member fixing portion and a spring, wherein the coupler body is formed with a hollow portion having a first tapered portion and a second tapered portion which are gradually expanded from both sides of an insertion port side into which reinforcing bars are inserted, a part insertion port is formed on an outer circumferential surface of the coupler body, the first tightening unit is inserted into the first tapered portion of the hollow portion through the part insertion port of the coupler body, the second tightening unit is inserted into the second tapered portion of the hollow portion through the part insertion port of the coupler body, the support member is for supporting an end portion of the reinforcing bars disposed and engaged inside the coupler body, the support member fixing portion fixes the support member with respect to the coupler body, and springs are supported by the support members, respectively, to elastically bias the first tightening unit and the second tightening unit toward the first tapered portion and the second tapered portion, respectively.
In the present invention, the support member fixing portion includes a support groove formed on an inner peripheral surface of a hollow portion corresponding to the component inlet port of the coupling body from an inlet side of the component inlet port such that the engagement protrusion formed on the outer peripheral surface of the support member is inserted into and supported by the support groove.
Further, the support member includes a support body formed with a reinforcing bar support at a central portion and having a cylindrical shape, and the spring is inserted into upper and lower portions thereof, and an engagement protrusion formed along an outer circumferential surface of the support body and engaged with the support groove.
The connector further comprises a covering part which is formed on the outer peripheral surface of the supporting protrusion part or the supporting part body and shields the opening part of the connector body.
The first tightening unit is configured to grip a reinforcing bar, and includes a first clamping portion having an inner circumferential surface formed with a first protrusion that comes into close contact with an outer circumferential surface of the reinforcing bar to grip the reinforcing bar, and having an outer circumferential surface formed with a third tapered portion corresponding to the first tapered portion.
The second tightening unit is used for holding the reinforcing steel bar and comprises a second clamping part, a second protrusion which is tightly attached to the outer circumferential surface of the reinforcing steel bar to hold the reinforcing steel bar is formed on the inner circumferential surface of the second clamping part, and a fourth tapered part corresponding to the second tapered part is formed on the outer circumferential surface of the second clamping part.
At least one of a groove and a notch is formed on the inner or outer circumferential surface of the first and second clamping parts along the length direction so as to be closely attached along the outer circumferential surface of the reinforcing steel bar.
Effects of the invention
According to the one-touch type reinforcing bar coupler of the present invention, the coupler body is formed of a single member, so that structural rigidity can be improved as compared with the conventional case where two members are joined. Further, since both end portions of the reinforcing bar connected to each other can be positioned at the central portion of the coupler body by the support member, it is possible to prevent each of the gripping portions of the reinforcing bar from being biased toward one side.
The invention can improve the assembly of the one-touch steel bar connecting piece, reduce the operation cost required by connecting the steel bars and improve the reliability of steel bar connection.
Further, according to the present invention, since the respective first and second clamping parts of the first and second tightening units for gripping the reinforcing bar to join the reinforcing bar are maintained in the expanded state, it is possible to reduce the occurrence of poor insertion of the reinforcing bar with respect to the first and second tightening units when the reinforcing bar is inserted to join the same.
Drawings
Fig. 1 is a partially cut-away perspective view schematically showing a concrete structure provided with one-touch type reinforcing bar couplers according to the present invention.
Fig. 2 is an exploded perspective view of a one-touch reinforcing bar coupler according to the present invention.
Fig. 3 is a cross-sectional view of the one-touch rebar coupling shown in fig. 2.
Fig. 4 is a partially cut-away perspective view illustrating a state in which a reinforcing bar is gripped by the one-touch reinforcing bar coupler according to the present invention.
Fig. 5 is a cross-sectional view illustrating a state in which reinforcing bars are gripped by the one-touch reinforcing bar coupler of fig. 4.
Fig. 6 to 8 are perspective views of the first and second jaws, which pick up and show the first and second tightening units.
Fig. 9 is an exploded perspective view illustrating another embodiment of a one-touch reinforcing bar coupling according to the present invention.
Fig. 10 is a cross-sectional view of the one-touch rebar coupling shown in fig. 9.
Fig. 11 is an exploded perspective view illustrating another embodiment of a one-touch reinforcing bar coupling according to the present invention.
Fig. 12 is a cross-sectional view of the one-touch rebar coupling shown in fig. 11.
Fig. 13 is an exploded perspective view illustrating another embodiment of a one-touch reinforcing bar coupling according to the present invention.
Fig. 14 is a cross-sectional view of the one-touch rebar coupling shown in fig. 13.
Fig. 15 is an exploded perspective view illustrating still another embodiment of a one-touch reinforcing bar coupling according to the present invention.
Fig. 16 is an exploded perspective view illustrating another embodiment of a one-touch reinforcing bar coupling according to the present invention.
Fig. 17 is a cross-sectional view of the one-touch rebar coupling shown in fig. 16.
Detailed Description
One embodiment of a one-touch rebar coupling according to the present invention is shown in fig. 1-8.
Referring to the drawings, a one-touch type reinforcing bar coupler 10 according to the present invention for coupling reinforcing bars to each other when reinforcing bars are arranged in the construction of civil engineering or concrete buildings 1 has a coupler body 20, wherein the coupler body 20 is formed with a hollow 24 having a first tapered portion 21 and a second tapered portion 22, the first tapered portion 21 and the second tapered portion 22 are gradually expanded from the sides of a first insertion port 21a and a second insertion port 22a for inserting a first reinforcing bar 310 and a second reinforcing bar 320 to be coupled, and a part-input opening portion 25 is formed on the outer circumferential surface of the coupler body 20. The coupling body 20 has a first tightening unit 30 and a second tightening unit 40, wherein the first tightening unit 30 is inserted into the first tapered portion 21 of the hollow portion through the parts inlet port 25 of the coupling body 20 to hold the first reinforcing bar 310, and the second tightening unit 40 is inserted into the second tapered portion 22 of the hollow portion 23 through the parts inlet port 25 of the coupling body 20 to hold the second reinforcing bar 320.
Further, the coupling body 20 has a support member 50, wherein the support member 50 serves to support the ends of the first reinforcing bar 310 and the second reinforcing bar 320 which are disposed and engaged inside the coupling body 20. The supporting member 50 is positioned at the center of the hollow portion 24 of the coupling body 20 by the outer peripheral surface thereof and a supporting member fixing portion 60 formed on the coupling body 20.
Further, the upper and lower portions of the support member 50 are provided with a first spring 71 and a second spring 75 that elastically bias the first tightening unit 30 and the second tightening unit 40 toward the first tapered portion 21 and the second tapered portion 22, respectively.
The respective constituent elements of the one-touch reinforcing bar coupler 10 according to the present invention configured as described above will be described in more detail.
The coupler body 20 of the coupling bar 20 according to the present invention is formed with a hollow portion 24 penetrating through the center in the length direction. The hollow portion 24 is constituted by the first insertion port 21a and the second insertion port 22a, the first tapered portion 21 and the second tapered portion 22, and the connecting portion 23 as described above, wherein the first reinforcing bar 310 and the second reinforcing bar 320 are inserted into the first insertion port 21a and the second insertion port 22a from the upper and lower sides of the coupling body 20, respectively, the first tapered portion 21 and the second tapered portion 22 extend from the first insertion port 21a and the second insertion port, and the connecting portion 23 connects the first tapered portion 21 and the second tapered portion 22 and inserts the supporting member 50.
Further, the component inlet 25 formed at the central portion of the coupling body 20 has a size that enables the first and second tightening units 30 and 40 and the first and second springs 71 and 75 to be smoothly inserted. In addition, both side surfaces of the component inlet 25 may be formed to have smooth surfaces so that the component can be smoothly inserted, and a support groove for supporting a support member fixing portion 60 to be described later may be formed.
Alignment protrusions 27 are formed on both sides of the outer circumferential surface of the coupler body 20 along the joining direction of the first and second reinforcing bars 310 and 320, that is, so as to be able to correspond to the beads (beads) of the first and second reinforcing bars 310 and 320 inserted into the first and second insertion ports 21a and 22 a. In addition, the outer circumferential surface of the central portion of the coupling body 20 may further have a reinforcing member having a relatively thick thickness. As shown in fig. 15 and 16, the outer circumferential surface of the coupling body may be formed in a cylindrical or polygonal column shape, and the outer circumferential surface may have an inclined surface inclined from the central portion toward both sides. The first tightening unit 30 and the second tightening unit 40 have substantially the same structure.
The first tightening unit 30 has a third tapered portion 32 corresponding to the first tapered portion 21, and has a plurality of first jaw portions 31, wherein the plurality of first jaw portions 31 are inserted into the hollow portion 24 of the coupler body 20 and provide a holding force to the first reinforcing bar 310 by the first spring 71 moving toward the first tapered portion 21. The first tightening unit 30 may be arranged along the outer circumferential surface of the first reinforcing bar 310 and is composed of 2 to 4 first clamping parts 31. However, it is not limited thereto.
Further, a plurality of first protrusions 33 for engagement with the reinforcing bars may be formed on the inner circumferential surface of the first jaw 31, and the first protrusions 32 may be formed in a zigzag shape or formed to be inclined toward the lower side. Further, the first protrusions 33 formed on the first jaw parts 31 may be continuously formed along the inner circumferential surfaces of the respective first jaw parts 31. However, it is not limited thereto, and a plurality of conical protrusions or protrusions of a polygonal pyramid shape, protrusions of a truncated cone shape, etc. may be formed on the inner circumferential surface of the first jaw 31.
Further, the first jaw 31 is formed on an inner surface or an outer surface thereof with a first groove 35 (refer to fig. 6 and 7) or with a first cut portion 36 (refer to fig. 8) cut from an upper end portion toward a lower direction by a predetermined length so as to be smoothly plastically or elastically deformed toward an outer circumferential surface side of the first reinforcing bar 310 gripped as shown in fig. 4 to 8 when the first reinforcing bar 310 is gripped. However, it is not limited thereto, and the first groove 35 and the first cutout portion 36 may be formed in plural.
The second tightening unit 40 has a fourth tapered portion 42 corresponding to the second tapered portion 22, and has a plurality of second clamping portions 41, wherein the plurality of second clamping portions 41 are inserted into the hollow portion 23 of the coupling body 20 and provide a gripping force to the second reinforcing bar 320 by the second elastic spring 75 moving toward the second tapered portion 22 side. Further, similarly to the first jaw 31, the second jaw 41 may be provided on an inner circumferential surface thereof with a plurality of second protrusions 43 for engaging with the reinforcing bars or one selected from a plurality of conical protrusions, polygonal pyramid-shaped protrusions, truncated cone-shaped protrusions.
Further, similar to the first clamping part 31, the second clamping part 41 is formed with a second groove 45 along the length direction on the inner or outer surface thereof or is cut a second notch part 46 of a predetermined length downward from the upper end part to enable smooth plastic or elastic deformation toward the outer circumferential surface of the held reinforcing bar when the second reinforcing bar 320 is held.
In addition, the first and second jaw expanding units 80 and 90 are respectively provided at the inner sides of the first and second tightening units 30 and 40, wherein in a state where the first and second tightening units 30 and 40 are inserted into the hollow portion 24 of the coupling body 20, that is, the insides of the first and second tapered portions 21 and 22, the first and second jaw expanding units 80 and 90 expand the entrances into which the first and second reinforcing bars 310 and 320 are inserted in a state where they are biased toward the outside direction by the first and second springs 71 and 72, respectively, before the first and second reinforcing bars 310 and 320 are gripped.
The first jaw expanding unit 80 and the second jaw expanding unit 90 have substantially the same structure.
The first jaw expanding unit 80 has a structure in which a first introduction groove 81 is formed at the same position on the inner circumferential surface of each first jaw 31 in the circumferential direction, and a first expanding ring 82 having both ends spaced apart or overlapped is provided on the inner circumferential surface of the first introduction groove 81, and the second jaw expanding unit 90 has a structure in which a second introduction groove 91 is formed at the same position on the inner circumferential surface of each second jaw 41 in the circumferential direction, and a second expanding ring 92 having both ends spaced apart or overlapped is provided on the inner circumferential surface of the second introduction groove 91. Preferably, the first and second introduction grooves 81 and 91 are formed to be positionable at a central portion in a longitudinal direction of the first and second jaws 31 and 41 or an upper side thereof, respectively. Preferably, the first introduction groove 81 is formed in a region corresponding to the third tapered portion 32, and the second introduction groove 92 is formed in a region corresponding to the fourth tapered portion 42. Preferably, the diameters of the first and second expansion rings 82, 92 are as relatively larger as possible than the diameter of the hollow portion of the coupling body 20. The first expansion ring 82 and the second expansion ring 92 may be formed of an elastic ring, but are not limited thereto. Further, it is preferable that the first and second expansion rings 82 and 92 do not protrude from the inner circumferential surface of the first or second jaw, thereby avoiding interference with the reinforcing bars to be engaged.
In addition, the supporting member 50 is inserted into the part inlet 25 formed at the central portion of the coupling body 20 to be engaged with the coupling body 20 through the supporting member fixing portion 60.
Although the support member 50 may be formed in a circular disc shape, it is not limited thereto, and as shown in fig. 2 and 11 to 16, a plate-shaped reinforcing bar support part 52 that supports the first reinforcing bar 310 and the second reinforcing bar 320 coupled to each other so that they can correspond to each other is provided at a central portion of the cylindrical support part body 51. The reinforcing bar support part 52 may be formed integrally with the support part body 51.
The diameter of the inner diameter of the support body 51 is relatively greater than the diameter of the reinforcing bars so that the ends of the first and second reinforcing bars 310 and 320 can be inserted, and the outer diameter thereof is formed to be relatively smaller than the diameters of the first and second springs 71 and 75 so that the first and second springs 71 and 75 can be inserted.
The support member 50 is fixed to a portion of the hollow portion 23 communicating with the component inlet port 25 of the coupling body 20 by a support member fixing portion 60. As shown in fig. 2 and 9, the support member fixing portion 60 has a hooking protrusion 61 formed on the outer circumferential surface of the support body 51, and a support groove 62 engaged with the hooking protrusion 61 is formed on the corresponding inner wall of the component inlet 25, whereby the support member fixing portion 60 is configured by engagement of the hooking protrusion 61 and the support groove 62. Further, a covering portion 65 for covering the component inlet 25 is provided on one side of the hooking protrusion 61. Preferably, when the support member 50 is engaged with the support member fixing portion 60, the covering portion 65 is engaged with the component inlet 25 so as to shield the component inlet 25.
The hooking protrusion 61 on the outer peripheral surface supports the first spring 71 and the second spring 75 inserted from the upper portion and the lower portion of the support body 51, respectively.
As another embodiment of the support member fixing portion, as shown in fig. 11 to 15, it may be constituted by a support pin 67 which penetrates the coupling body 20 and the support member 50 and supports the support member 50 on the coupling body 20. The support pin 77 may be threadably engaged with a snap ring or coupling body so as not to be easily separated from the coupling body 20 when engaged with the coupling body 20. In the case where the support member 50 is supported by the support pin 67, the springs are not separated into two parts as in the case of the first spring 71 and the second spring 75, but may be configured as a single body, that is, as one continuous spring. Further, as shown in fig. 11, 15, 17, there may be springs and annular washer members 77 and 78 of the first and second tightening units.
In addition, another embodiment of the coupler body 20 and the support member engaged therewith is shown in fig. 16 and 17. In the present embodiment, the same reference numerals as those of the above-described embodiment denote the same constituent elements.
Referring to the drawings, a part inlet 100 is formed so as to be capable of penetrating through a central portion of the coupling body 20, and a support member 110 is insertable into the part inlet 100. The part input port 100 and the support part 110 may be formed in a hexahedral shape having a rectangular shape, but are not limited thereto. A support fixing portion 120 is formed on the corresponding inner circumferential surface of the part inlet 100 and the outer circumferential surfaces of both sides of the support member 110, and the support fixing portion 120 has hooking protrusions 121 formed on both side surfaces of the support member 110, and a support groove 122 is formed on the inner circumferential surface of the part inlet penetrating the coupling body 20. Since the component inlet 110 formed in the coupling body 20 is penetrated, it can be selectively inserted from both sides thereof.
In addition, the support part 110 is formed at upper and lower surfaces thereof with reinforcing bar support grooves 111 and 112, respectively, which support ends of the coupled first and second reinforcing bars 310 and 320. The spring may also be supported in the reinforcement supporting grooves 111 and 112 together with the first reinforcement 310 and the second reinforcement 320, respectively. However, it is not limited thereto, and additional spring supporting grooves for supporting the springs may be formed above and below the supporting member 110. Here, the inner diameters of the first and second springs 71 and 75 are substantially equal to or greater than the diameters of the first and second reinforcing bars 310 and 320, and equal to or less than the arrangement diameters of the first and second tightening units before engagement. Further, the first and second springs 71 and 75 should not interfere with the insertion of the first and second reinforcing bars 310 and 320, respectively, when the first and second reinforcing bars 310 and 320 are assembled.
The operation of the one-touch reinforcing bar coupler 10 according to the present invention configured as described above will be explained hereinafter.
First, in order to connect the first and second reinforcing bars 310 and 320 to each other, the coupler body 20 is constructed as a single body, and thus the first spring 71 for elastically pressing the first tightening unit 30 provided with the first expansion unit is inserted while the first tightening unit is inserted to the first tapered portion 21 side through the parts inlet 25. Further, the second spring 75 is inserted immediately after the second tightening unit 40 with the second expansion unit mounted thereon is inserted to the second tapered portion 21 side.
Further, the support member 50 is inserted into the component inlet 25 of the coupling body 20. The first spring 71 may be supported on an upper side of the support member 50, and the second spring 71 may be supported on a lower side of the support member 50. Thereby, the first tightening unit 30 is elastically biased toward the first insertion port 21a side by the first spring 71, and the second tightening unit 40 is elastically biased toward the second insertion port 22a side by the second spring 75.
At this time, the support member 50 is supported by the support member fixing portion 60, and the support member fixing portion 60 may be configured by inserting a hooking protrusion 61 formed on an outer circumferential surface of the support portion body 51 into a support groove 62 formed on an inner circumferential surface of the coupling body 20. However, in the case where the supporting member fixing portion 60 is constituted by the supporting pin 65 engaged with the coupling body 20, as shown in fig. 13 and 14, it may be constituted by inserting the supporting pin 65 through the coupling body 20 and the supporting member. Thereby, the support member 50 is positioned at the lengthwise central portion of the coupling body 20 while being fixed to the inside of the coupling body 20.
In the state as described above, in order to connect the first reinforcing bar 310 and the second reinforcing bar 320 using the one-touch type reinforcing bar coupler 10, the reinforcing bars are inserted into the first tightening unit 30 and the second tightening unit 40 inside the coupler body 20 through the first insertion port 21a and the second insertion port 22a of the coupler body 20.
In this process, since the first and second jaw expanding units 100 and 110 are respectively provided inside the first and second tightening units 30 and 40, and thus the state in which the entrances of the first and second tightening units 50 and 60 are expanded is maintained, the first and second reinforcing bars 200 and 210 can be smoothly inserted.
Further, the first tightening unit 50 supported on the first tapered portion 21 of the hollow portion 23 of the coupling body 20 is elastically biased toward the outside of the coupling body 20 by the first spring 71, and is expanded toward the outside by the first expansion ring 82 provided on the inner peripheral surface of the first jaw portion 31 constituting the first tightening unit 30, thus forming a space into which the first reinforcing bar 310 is inserted. The second tightening unit 40 also has a structure in which the second jaw 41 is expanded by the second expanding ring 92 as described above.
Further, the first and second reinforcing bars 310 and 320 inserted as described above become uniform in insertion depth of the first and second reinforcing bars 310 and 320 to be joined because the supporting member 50 is positioned in the central portion of the coupler body 20 by the supporting member fixing portion 60. Therefore, a decrease in the engagement force due to unevenness in the grip length can be prevented, and the first tightening unit 30 and the second tightening unit 40 can be prevented from being biased toward one side. Further, the first and second reinforcing bars 310 and 320 supported on the supporting member 50 may be inserted into the first and second springs 71 and 75, respectively, and the inner diameter of the first spring 71 is substantially equal to or greater than the outer diameter of the first reinforcing bar 310, and the inner diameter of the second spring 72 is substantially equal to the outer diameter of the second reinforcing bar 210, so that the supporting force of the reinforcing bars and the linear mobility of the reinforcing bars can be improved.
In the state of being engaged as described above, when a tensile force is applied to the first and second reinforcing bars 310 and 320, the first tightening unit 30 moves upward. Accordingly, the third tapered portion of the first clamping portion 31 of the first tightening unit 30 applies pressure toward the outer circumferential surface side of the first reinforcing bar 310 while moving relatively to the first tapered portion 21. Further, the second tightening unit 40 is moved downward similarly to the first tightening unit 30, and the fourth tapered portion of the second jaw 41 of the second tightening unit 40 applies pressure toward the outer circumferential surface side of the second reinforcing bar 320 while being moved relatively to the second tapered portion 21.
In this process, since the first and second grooves 35 and 36 or the hook 36 is formed on the inner and outer circumferential surfaces of the first and second clamping parts 31 and 41, elastic and plastic deformation can be generated in the circumferential direction, thereby improving the close contact force with the outer circumferential surfaces of the first and second reinforcing bars 310 and 320. Therefore, the holding force of the reinforcing bars can be further increased.
As described above, according to the one-touch type reinforcing bar coupler of the present invention, since the coupler body thereof is integrally formed, the structural strength can be improved, and since the part inlet is formed in the central portion of the coupler body and the support member is provided therethrough, it is possible to prevent poor gripping in which the reinforcing bar to be connected is biased toward one side with respect to the central portion of the coupler body, and to improve the reliability of the engagement with the reinforcing bar.
While the invention has been described with reference to the embodiments shown in the drawings, this is for illustrative purposes only and it is to be understood that various modifications and equivalent other embodiments will be apparent to those skilled in the art.
Therefore, the true technical scope of the present invention should be defined by the technical idea of the appended claims.
Industrial applicability
The one-touch type reinforcing bar coupler of the present invention is widely applicable to connection of pipes, bolts, section steel, rods, etc. used in various industrial facilities, as well as connection of reinforcing bars at the time of reinforcement.
Claims (5)
1. A touch rebar coupler, comprising:
a coupling body formed with a hollow portion having a first tapered portion and a second tapered portion which are gradually expanded from both side insertion ports into which reinforcing bars are inserted, and formed with a part insertion port on an outer circumferential surface thereof;
a first tightening unit inserted into the first tapered portion of the hollow portion through the part inlet port of the coupling body;
a second tightening unit inserted into the second tapered portion of the hollow portion through the part inlet port of the coupling body;
a support member for supporting an end of a reinforcing bar disposed and engaged inside the coupler body;
a support member fixing portion that fixes a support member with respect to the coupling body; and
springs supported by the support members, respectively, to elastically bias the first and second tightening units toward first and second tapered portions, respectively,
wherein the support member fixing portion includes a support groove formed on an inner peripheral surface of a hollow portion corresponding to a component inlet port of the coupling body from an inlet side of the component inlet port such that an engagement protrusion formed on an outer peripheral surface of the support member is inserted into and supported by the support groove.
2. The one-touch rebar coupling of claim 1, wherein the support member comprises:
a support body formed with a reinforcing bar support at a central portion thereof, and having a cylindrical shape, and the spring being inserted into upper and lower portions thereof; and
an engagement protrusion formed along an outer circumferential surface of the support part body and engaged with the support groove.
3. The one-touch rebar coupling of claim 2, further comprising:
a covering portion formed on an outer peripheral surface of the support protrusion portion or the support portion body and covering the opening portion of the coupling body.
4. The one-touch rebar coupling of claim 1,
the first tightening unit is used for holding a reinforcing steel bar and comprises a first clamping part, a first protrusion which is tightly attached to the outer circumferential surface of the reinforcing steel bar to hold the reinforcing steel bar is formed on the inner circumferential surface of the first clamping part, a third conical part corresponding to the first conical part is formed on the outer circumferential surface of the first clamping part,
the second tightening unit is used for holding the reinforcing steel bar and comprises a second clamping part, a second protrusion which is tightly attached to the outer circumferential surface of the reinforcing steel bar to hold the reinforcing steel bar is formed on the inner circumferential surface of the second clamping part, a fourth tapered part corresponding to the second tapered part is formed on the outer circumferential surface of the second clamping part,
at least one of a groove and a notch is formed on the inner or outer circumferential surface of the first and second clamping parts along the length direction so as to be closely attached along the outer circumferential surface of the reinforcing steel bar.
5. The one-touch type reinforcing bar coupling of claim 4, wherein the first and second tightening units further comprise a first jaw expanding unit expanding the first jaw and a second expanding unit expanding the second jaw, respectively, so that the reinforcing bars can be smoothly introduced in a state where the first and second tightening units are inserted into the hollow portion of the body, respectively.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180066102A KR101951882B1 (en) | 2018-06-08 | 2018-06-08 | One-touch quick coupler for connecting reinforcing bar |
| KR10-2018-0066102 | 2018-06-08 | ||
| PCT/KR2019/006845 WO2019235865A1 (en) | 2018-06-08 | 2019-06-07 | One-touch reinforcing bar coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110832151A CN110832151A (en) | 2020-02-21 |
| CN110832151B true CN110832151B (en) | 2021-11-09 |
Family
ID=65584907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980002379.0A Expired - Fee Related CN110832151B (en) | 2018-06-08 | 2019-06-07 | One touch type steel bar connector |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101951882B1 (en) |
| CN (1) | CN110832151B (en) |
| PH (1) | PH12020552129A1 (en) |
| WO (1) | WO2019235865A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102069879B1 (en) | 2019-05-29 | 2020-02-11 | 윤명식 | Reinforced anti-slip type one-touch coupler |
| KR102069667B1 (en) * | 2019-08-08 | 2020-01-23 | 주식회사 금화 | Pressure type coupler with means for individually pressing the wedge |
| KR102135481B1 (en) * | 2019-10-01 | 2020-07-17 | 황성섭 | rebar connecting coupler |
| KR102272480B1 (en) * | 2019-10-15 | 2021-07-02 | 양현민 | steel reinforcing bar coupler for concrete construction |
| KR102105560B1 (en) * | 2019-10-25 | 2020-04-28 | 차성진 | One touch rebar coupler |
| KR102278115B1 (en) | 2019-10-30 | 2021-07-15 | 이은기 | Steel reinforcing bar coupler with detachable lock key unit |
| KR102154938B1 (en) | 2019-12-23 | 2020-09-10 | 김윤수 | Coupler for steel reinforcement improved assembly structure |
| CN111236540A (en) * | 2020-03-11 | 2020-06-05 | 吴祖荣 | Full grouting sleeve for connecting assembly type construction steel bars and construction method thereof |
| KR102256914B1 (en) | 2020-09-01 | 2021-05-27 | 이은기 | Lock key unit holder of steel reinforcing bar coupler |
| KR102438126B1 (en) * | 2021-10-13 | 2022-08-29 | 윤상범 | One-touch rebar coupler for preventing foreign substances from entering |
| KR20230119790A (en) | 2022-02-08 | 2023-08-16 | 이은기 | Rebar coupler having a fixed key module |
| KR102732780B1 (en) * | 2022-08-01 | 2024-11-20 | 문수만 | Wedge type rebar coupler and jig appratus therof |
| ES1299777Y (en) * | 2022-12-07 | 2023-08-08 | Del Villar Carrey Jesus | Structural system of pillars and beams |
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| KR200223657Y1 (en) * | 2000-11-17 | 2001-05-15 | 김대권 | One touch type coupling device for reinforcing rods |
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| KR101720515B1 (en) * | 2016-11-18 | 2017-03-28 | 거성 이.엔.지 주식회사 | Coupler for Thread Bar |
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2018
- 2018-06-08 KR KR1020180066102A patent/KR101951882B1/en active Active
-
2019
- 2019-06-07 CN CN201980002379.0A patent/CN110832151B/en not_active Expired - Fee Related
- 2019-06-07 WO PCT/KR2019/006845 patent/WO2019235865A1/en active Application Filing
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2020
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|---|---|---|---|---|
| KR20020038291A (en) * | 2000-11-17 | 2002-05-23 | 김대권 | One touch type coupling device for reinforcing rods |
| CN2627106Y (en) * | 2003-01-24 | 2004-07-21 | 董满林 | Reinforced bar connector with pretension device |
| KR101161357B1 (en) * | 2011-03-05 | 2012-07-02 | 미래테크(주) | Steel connecting device |
| CN103814182A (en) * | 2011-09-07 | 2014-05-21 | 酷杰克有限公司 | One-touch type quick coupler for connecting steel bars |
| KR20130143331A (en) * | 2012-06-21 | 2013-12-31 | 길병모 | Reinforcing bar coupler |
| KR20140060200A (en) * | 2012-11-09 | 2014-05-19 | 태연기계주식회사 | Iron-bar coupler |
| KR20180054214A (en) * | 2016-11-15 | 2018-05-24 | 동명대학교산학협력단 | Steel reinforcing coupler |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019235865A1 (en) | 2019-12-12 |
| PH12020552129A1 (en) | 2021-05-31 |
| KR101951882B1 (en) | 2019-02-25 |
| CN110832151A (en) | 2020-02-21 |
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