WO2013035958A1

WO2013035958A1 - One-touch type quick coupler for connecting steel bars

Info

Publication number: WO2013035958A1
Application number: PCT/KR2012/002728
Authority: WO
Inventors: 김현호; 이재창
Original assignee: Kim Hyun Ho; Lee Jae Chang
Priority date: 2011-09-07
Filing date: 2012-04-10
Publication date: 2013-03-14
Also published as: US20140147198A1; KR101102531B1; CN103814182A; JP2014517176A

Abstract

The present invention relates to a one-touch type quick coupler for connecting steel bars, including: left and right bodies (100, 200) in which both ends of the steel bars (300) are inserted and fixed; and left and right grip units (110, 210) which are provided in the inside of the left and right bodies (100, 200) to grip both ends of the steel bars (300), wherein the left and right bodies (100, 200) are formed with front steel bar insertion holes (101, 201), sidewalls (102, 202), and rear holes (103, 203), respectively, rear parts of the left and right bodies (100, 200) are coupled with each other, internal diameters of the sidewalls (102, 202) have a tapered shape with a slope, external diameter parts of the left and right grip units (110, 210) also have a tapered shape with a slope, slope parts of the left and right grip units (110, 210) are mutually operated with slope parts of the internal diameters of the sidewalls (102, 202) to perform a pressing operation for preventing the ejection of the steel bars (300) through a wedge action, saw teeth are formed in the longitudinal direction of the internal diameter parts of the left and right grip units (110, 210), and grooves (601) capable of receiving joint protrusions (301) parts of the steel bars (300) are formed at lower sides of the saw teeth (600). The present invention can reliably and stably grip the steel bars by the action of the grip units formed at the saw teeth within the coupler, reduce a manufacturing cost, and provide a remarkably competitive price by reducing consumer goods through simple production.

Description

One-touch quick coupler for reinforcing bars

The present invention relates to a one-touch quick coupler for reinforcing bars, and more particularly, to a one-touch quick coupler for reinforcing bars using a wedge-shaped grip hole and a body having a saw blade.

In order to connect reinforcing bars for use in concrete structures at various construction sites, in the past, reinforcing bars were bundled and fixed with wires in a double overlapping state. The work is cumbersome and the center of the reinforcing bar is not vertical, not only crooked, but also because the strength of the wire is weak, there is a problem that the connection state is released easily.

In order to solve this problem, rebar joints (coupling devices) have been developed and used for easily and rigidly connecting reinforcing bars by means other than wire.

However, most of the conventionally developed reinforcing bars are inserted into the housing and then fixed by screwing the housing, which is structurally complicated and difficult to connect the rebars, which requires a lot of time, effort, and cost. there is a problem.

In order to solve this problem, the Republic of Korea Patent No. 039305 (registered on 28/28/200), Republic of Korea Patent No. 04622901 (registered on Dec. 8, 2004), Republic of Korea Patent Registration No. 1003302 can be easily connected to the rebar. One touch rebar couplers are disclosed.

However, the conventional one-touch rebar couplers can provide a strong binding force when the ribs of the rebar are symmetrical, but most of the ribs do not provide a strong binding force for the rebars having left and right asymmetry. That is, when the reinforcing bar joints of the registered patents are inserted into the rebar having an asymmetric rib, one side ribs are firmly coupled, but the other side ribs are not coupled and the binding force is weak, and commercialization is not achieved. In addition, there is a problem that the commercialization is impossible because the deformation of the reinforcing bar or the loss of the ball is likely to occur due to heat deformation or other external force.

Patent No. 10-1039120, which is filed and registered by the present applicant, solves the problem of the conventional rebar couplers, and as shown in FIGS. 1 and 2, both ends of the two bars B are inserted at both sides. A coupler body (10) having a hollow portion (11) formed so as to be open, and two tapered portions (12) formed at both end portions of the hollow portion (11) so as to have an inner diameter smaller from the inner side to the axial outer side; The plurality of

balls

31, 32, 33, arranged along the axial direction inside the respective tapered portions 12 and movable in the axial direction, and having a smaller diameter toward the outer axial direction from the inside of the coupler body 10, 34 and a plurality of ball groups 30; An elastic member (40) installed inside the coupler body (10) to apply an elastic force for pushing the ball groups (30) from the inside to the axially outward direction; The

balls

31, 32, 33, 34 and the

balls

31, 32, 33 of the ball group 30 when the reinforcing bars B are inserted into the hollow part 11 through both ends of the coupler body 10. The ribs R of the outer circumferential surface of the reinforcing bar B are inserted between the two bars 34 and the wedges of the

balls

31, 32, 33, and 34 and the tapered part 12 may be restrained so as not to fall out. It is.

However, such a ball-type one-touch coupler is easy to fasten, but once the fastening is characterized in that it does not fall well, in the case of reinforcing bars, there is a problem of slipping out as the rebar is increased. In other words, if the joint part of the reinforcing bar and the body is in the form of a ball or a gentle bend, even though the adhesion is very good, the bar of the reinforcing bar is pushed out of the body, and the reinforcing bar is elongated. If the reinforcing bar is pulled in the opposite direction after the reinforcing bar is inserted, the shape of the reinforcing bar deforms the shape of the reinforcing bar by pressing the reinforcing bar. Deformed and pushed away form) There was a problem that eventually did not get the desired tensile force.

The present invention has been made to solve the above problems, the object of the present invention is to securely and safely grip the reinforcement by the operation of the gripping portion formed in the tooth in the coupler, and also easy to manufacture and reduce the material cost It is to provide a one-touch quick coupler for reinforcing bars with excellent production cost and price competitiveness.

The present invention relates to a one-touch quick coupler for reinforcing bar joints, comprising a left and right body in which both ends of the reinforcing bar are inserted, and left and right gripping parts installed inside the left and right bodies to grip both ends of the reinforcing bar to couple the reinforcing bars. The left and right bodies are respectively composed of a front reinforcement insertion hole, a side wall and a rear hole, and the rear parts of the left and right bodies are mutually coupled, and the side wall inner diameter is inclined tapered shape, and the outer diameter portion of the left and right grip parts. The tapered shape is also inclined, wherein the inclined portions of the left and right grip portions interact with the inclined portions of the side wall inner diameter to perform wedge action to compress the reinforcing bars, and the left and right inner portions of the left and right grip portions are longitudinally serrated. Is formed, but the lower side of the sawtooth is characterized in that a groove for accommodating the nodal part of the reinforcement is formed Gong.

According to one aspect of the invention, the left and right holding portions are each divided into a plurality of segments, the plurality of segments are disposed radially around the reinforcing hole, and the holding portion between the divided left and right holding portion segments The guide is inserted between the sections correspondingly to form a circle with a round cross section, and the left and right inner diameter portions of the gripping portion are concavely rounded to hold the reinforcing bars, and both sides are convexly rounded outwards. The outer diameter portion is characterized in that it is convexly rounded outward in contact with the left and right body.

The present invention has a remarkable effect that it is possible to reliably and securely hold the reinforcing bar by the operation of the toothed gripping portion in the coupler, and also easy to manufacture and reduced material cost, excellent production cost and price competitiveness.

1 is a perspective view of a conventional coupler

2 is a horizontal cross-sectional view of the coupler of FIG.

3 is a longitudinal sectional view of a coupler according to the present invention;

4 is a horizontal cross-sectional view of the present invention coupler

Figure 5 is a partial cutaway view of the gripper of the present invention coupler

Figure 6 is a longitudinal cross-sectional view of the gripping portion of the coupler of the present invention

Figure 7 is a bottom view of the gripper of the present invention coupler

8 is a plan view of the gripper of the present invention coupler

Figure 9 is a longitudinal cross-sectional view of the gripping portion of the coupler of another embodiment of the present invention.

10 is a plan view of a grip of the coupler of another embodiment of the present invention.

11 is a view in which the uneven groove is formed in the holding part of FIG.

12 is a view fixing the coupler body of the present invention on the wall

FIG. 13 is a view illustrating a coupler body of the present invention coupled to a 'T' shape

14 is a view of the coupler body of the present invention combined in a '+' shape

15 is a view illustrating a coupler body of the present invention in an 'L' shape;

Hereinafter, exemplary embodiments of a one-touch quick coupler for reinforcing bar connections according to the present invention will be described in detail with reference to the accompanying drawings.

3 to 8, the coupler of the present invention is installed in the left and

right body

100, 200 and the left and

right body

100, 200 is fixed to both ends of the reinforcement 300, the reinforcement 300 Right and left holding parts (110, 210) for holding both ends of the). The left and right sides are referred to for convenience of explanation in terms of left and right sides as seen in FIG. 3, and the actual left and right bodies and the grippers have the same structure and function.

The left and

right bodies

100 and 200 which interconnect the reinforcing bars 300 are equally provided as front reinforcing

hole insertion holes

101 and 201,

side walls

102 and 202, and

rear hole

103 and 203, respectively. It is composed. And since the rear portion of the left and right body (100, 200) is coupled to each other will be able to connect the two rebars.

Coupling method is to manufacture the left and right bodies, respectively, can be combined by screwing, welding and the like. Of course, one of the left and right bodies is mainly detachable, and a male screw is formed on the outer circumference of the rear body of the body, and on the other, a female screw is formed on the inner circumference of the rear body of the body.

The inner diameter of the

sidewalls

102 and 202 is inclined tapered, and the outer diameter portions of the left and

right grippers

110 and 210 are also tapered in inclined, so that the left and

right grippers

110 and 210 are inclined. The inclined portion of the

side walls

102 and 202 interacts with the inclined portion of the inner diameter of the wedge action so as not to squeeze the reinforcement 300. If you pull the right and left both bars in the reinforcing bar is connected soon rather tightly bound by the wedge action and do not escape.

In addition, the left and right gripping

parts

110 and 210 are each divided into a plurality of sections, and the plurality of sections are disposed radially around the reinforcing hole, and the left and

right holding parts

110 and 210 are divided into a plurality of sections. Gripping part guides 120 and 220 are inserted between the pieces correspondingly between the pieces to form a circular cross section, and the inner diameter portions of the left and right gripping

parts

110 and 210 grip steel. It is concave rounded so as to, both sides are convexly rounded outward, the outer diameter portion is convexly rounded outward in contact with the body (100, 200). The sections are at least two or more.

On the other hand, the fragments may form protrusions on both sides for the accuracy of the operation, and may form a protrusion groove on the corresponding gripper guide.

In the present invention, the left and right bodies and sections may be variously manufactured by a forging method, a press method, or a casting or cutting process using a mold. The material of the left and right body is made of a material that is stronger than steel rebar.

On the other hand, the guide corresponding to each segment of the holding part is made of metal or plastic. In addition, the rear portion of each of the gripper guides 120 and 220 is connected to the left and

right guide plates

121 and 221 in which a plurality of small holes are radially perforated.

Therefore, in the present invention, the side of the gripping portion has a circular shape, so that the stress can be dispersed even when the force is applied laterally, and no damage or deformation occurs. Therefore, it can endure a very large strength, and even if the thickness of a grip part becomes thin, sufficient performance can be ensured.

And the present invention is the tooth 600 is formed in the longitudinal direction of the inner diameter portion of the left and right holding parts (110, 210). The lower side of the tooth 600 is formed with a groove 601 that can accommodate the nodal protrusion 301 portion of the reinforcement 300, the groove 601 is rounded, so that each of the teeth 600 Section shape is'

'to be.

The groove height of reinforcing bar protrusions is generally constant, but it can be different depending on the reinforcing bar manufacturer, so the space inside the lower side of the tooth can be prevented to reduce the contact area due to the large node height.

In addition, the saw tooth 600 is formed in the longitudinal direction of the left and right gripping

portion

110, 210, is formed at a 1/2 interval of the pitch of the reinforcing barb protrusion 301. Therefore, even if the nodal projection is formed on the basis of the rib formed on both sides of the reinforcing bar can be easily gripped. Reinforcing bar is usually released in the horizontal direction between the two protruding ribs (rib) formed in the longitudinal direction is formed by deviating from each other in the longitudinal direction by a predetermined pitch with the two protruding ribs in between.

In addition, left and right compression coil springs 130 and 230 are installed between the respective left and right

gripping parts

110 and 210 segments and guide plates, and the left and right

gripping parts

110 and 210 when the rebar 300 is inserted and fixed. ) Will work smoothly.

9 and 10, the left and

right grip portions

110 and 210 may have a planar groove 601a instead of the curved groove 601. As shown in FIG. 11, the planar groove 601a may have an uneven portion 602 formed by knurling to reinforce the reinforcing contact area and pressure.

And the present invention is the stepped end is formed in the reinforcement direction side end in the outer diameter of the left and right holding parts (110) (210), the left and right body (100, 200) the inner step is also formed correspondingly, the reinforcement 300 is tensioned When it is, it is possible to distribute the pressure applied between the left and right gripping portion (110) 210 and the left and right body (100, 200).

In addition, a slope is formed at the end of the

body

100, 200 in the direction of the reinforcement 300 of the outer diameter so that the mortar is sufficiently filled without forming pores or empty spaces during concrete construction.

On the other hand, the present invention can be used to connect two reinforcing bars by combining the left and right body in which the left and right grip parts are embedded, as shown in Figs. 13 to 15, if necessary (T) type, cross (+) type , And can be used to join the reinforcing bar is coupled to the elbow (L) type hollow tube.

Similarly, the left and right gripping parts are separated from each other, and as shown in FIG. 12, the left and right bodies are used alone or in combination with the wall W only by the right body 200, as shown in FIG. 12. ) Is used to join a wall.

Embodiments of the one-touch quick coupler for reinforcing bars according to the present invention described above are presented for illustrative purposes only to help understanding of the present invention, but the present invention is not limited thereto, and those skilled in the art to which the present invention pertains. Various modifications and changes may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

Therefore, the present invention has a remarkable effect that it is possible to reliably and securely hold the reinforcing bar by the operation of the toothed gripping portion in the coupler, and also easy to manufacture and the material cost is reduced, excellent production cost and price competitiveness.

The present invention can be applied as a one-touch rebar coupler for connecting the reinforcing bars forming the framework of the construction of the construction to each other or to connect to the wall.

Claims

Left and right bodies 100 and 200 to which both ends of the rebar 300 are inserted and fixed, and left and right gripping parts 110 and 210 installed inside the left and right bodies 100 and 200 to grip both ends of the rebar 300. In the rebar coupler connecting the reinforcement 300 is made of),

The left and right bodies 100 and 200 are respectively composed of front reinforcement insertion holes 101 and 201, sidewalls 102 and 202, and rear and rear holes 103 and 203, respectively. The rear portion of the) is coupled to each other, the inner diameter of the side wall (102, 202) is inclined tapered shape, and the outer diameter portion of the left and right holding parts (110, 210) is also tapered in shape, the The inclined portions of the left and right grip portions 110 and 210 interact with the inclined portions of the inner diameters of the side walls 102 and 202 to perform a wedge action to compress the reinforcement 300 so as not to be separated, and the left and right grip portions 110 (210) The inner diameter portion of the tooth 600 is formed in the longitudinal direction, the lower side of the tooth 600 is formed with a groove 601 that can accommodate the nodal protrusion 301 portion of the reinforcement 300 ,

The left and right gripping parts 110 and 210 are each divided into a plurality of sections, and the plurality of sections are disposed radially around the reinforcing hole, and the left and right holding parts 110 and 210 sections are divided into a plurality of sections. Grip guides 120 and 220 are inserted between the sections to correspond to each other to form a circle having a round cross section, and the left and right grip parts 110 and 210 can be gripped with reinforcing bars. Rounded concave, both sides are rounded convex in the outward direction, the outer diameter portion is one-touch quick for reinforcing bars, characterized in that the convexly rounded outward to contact the left and right body (100, 200). Coupler.
According to claim 1, Since the groove 601 is rounded, the cross-sectional shape of each tooth 600 is'
One-touch quick coupler for reinforcing bars characterized in that
According to claim 1, wherein the tooth 600 is formed in the longitudinal direction of the left and right gripping portion 110, 210, the reinforcing bar is characterized in that formed at 1/2 intervals of the pitch of the reinforcing bar protrusion 301 One-touch quick coupler.
The rear portion of each of the gripper guides 120 and 220 is connected to the left and right guide plates 121 and 221 in which a plurality of small holes are radially perforated, and each of the left and right grippers ( Compression coil springs 130 and 230 are installed between the 110 and 210 segments and the left and right guide plates 121 and 221 to smoothly insert the left and right grip parts 110 and 210 when the rebar 300 is inserted and fixed. A one-touch quick coupler for reinforcing bars, characterized by operating.
The one-touch quick coupler of claim 1, wherein the left and right holding parts (110) (210) have a flat surface instead of the groove (601).
6. The one-touch quick coupler of claim 5, wherein the concave-convex portion 602 is formed on the plane to strengthen the reinforcing contact area and the pressure.
According to claim 1, in the outer diameter of the left and right grip portion 110, 210, the stepped end is formed in the reinforcement direction, the left and right body 100, 200 inner diameter is also formed corresponding step, the reinforcement 300 When the tension, the one-touch quick coupler for reinforcing bars, characterized in that the pressure applied between the left and right gripping portion (110) (210) and the left and right body (100, 200) can be dispersed.
The method of claim 1, wherein the reinforcement is formed at the end of the body 100, 200, the outer diameter of the reinforcement 300 direction of the reinforcement is characterized in that the reinforcement can be sufficiently filled mortar without forming pores or voids during concrete construction One-touch quick coupler for joints.
According to claim 1 or 5, wherein the left and right gripping portion (110, 210) is embedded in the left and right body 100, 200 are each can be separated and used alone, each separated, the body to the wall By attaching by screwing, the reinforcement 300 is attached to the wall, or it is used to connect the reinforcement 300 by being coupled to a hollow tube of a tee (T), cross (+), elbow (L) type. Touch quick coupler for reinforcing bar joints.