KR102598482B1 - Rebar butt joint coupler - Google Patents

Abstract

The present invention relates to a rebar butt joint coupler, and its purpose is to provide a rebar butt joint coupler that does not cause clearance or slip when combining rebars and can be used for earthquake resistance, vibration resistance, and precision construction. This is a housing whose center is penetrated so that reinforcing bars can be inserted on both sides: a first center plate member that forms a partition inside the housing and the ends of the reinforcing bars are brought into close contact; a second center plate member corresponding to the first center plate member; It is installed on the inside of both sides based on the middle of the housing, and is designed to grip the outer surface of the inserted reinforcing bar. The outer diameter is coupled to the inner diameter of the housing, and the inner diameter is connected to a sleeve having an inclined surface formed, and an inclined surface of the sleeve. A first gripping block including a wedge whose outer surface is in close contact and has a serrated inner diameter, and an elastic member that provides elasticity to the wedge in one direction; and a second gripping block having the same configuration as the first gripping block and coupled to the housing. It includes.

Description

Rebar butt joint coupler {Rebar butt joint coupler}

The present invention relates to a rebar butt joint coupler, and more specifically, to a rebar butt joint coupler that does not cause clearance or slip when combining rebars and can be used for earthquake resistance, vibration resistance, and precision construction.

In general, rebar is produced in a certain unit length at a manufacturing plant for convenience of transportation and work, so in most cases, rebar must be connected and used during construction work. Types of rebar joints include lap joints and gas pressure folds. , there is a mechanical joint, and many inventions of the mechanical joint are disclosed under the name of coupler.

Lap joint is a method of connecting the ends of reinforcing bars by overlapping them and tying them with a tie line. Since the reinforcing bars overlap, the reinforcing bars are wasted, and the spacing between the reinforcing bars narrows in the overlapped area, making it difficult to fill with concrete, and the cover thickness of the concrete becomes thinner. Because it is tied with tie lines, it is a structure vulnerable to tensile load.

Gas pressure welding is a method of welding the ends of two reinforcing bars by applying mechanical pressure while heating them with an oxyacetylene flame. There is always a safety risk because the equipment is inconvenient to use and high-pressure gas is used, and the strength is reduced as heat is applied to the reinforcing bars. deterioration, and there is the inconvenience of having to inspect all connected parts using ultrasonic inspection.

Couplers, which are mechanical joints, come in two types: the screw-processed joint method for the end of the rebar, and the one-touch method.

The screw processing joint method has the problem that the processing cost for screw processing is high, but the diameter of the reinforcing bar becomes small and the strength decreases.

The one-touch method is a method of fixing reinforcing bars by inserting reinforcing bars from both sides without processing the ends of the reinforcing bars. A pair of reinforcing bars must be in contact with each other in the center of the coupler or as close as possible to maximize the tensile force caused by the connection between the reinforcing bars.

However, the conventional one-touch coupler has limitations in bringing the reinforcing bars into close contact, and there is a problem in that clearance and slip phenomenon occur when combining the reinforcing bars.

In addition, the conventional one-touch coupler does not have a way to check the proximity of the rebar from the outside.

Patent 1: Registration No. 10-2101406 {Registration date April 9, 2020}

The present invention is intended to solve the problems of the prior art, and the purpose of the present invention is to provide a rebar butt joint coupler that does not cause clearance or slip when combining rebar and can be used for earthquake resistance, vibration resistance, and precision construction. It is in

In addition, another object of the present invention is to provide a rebar butt joint coupler that allows the inspection process to be easily performed by confirming the adjacent state of the rebar from the outside.

As a technical idea for achieving the present invention, a rebar butt joint coupler includes a housing whose center is penetrated so that rebars can be inserted on both sides: a first center plate member that forms a partition inside the housing and the ends of the rebar are in close contact; a second center plate member corresponding to the first center plate member; It is installed on the inside of both sides based on the middle of the housing, and is designed to grip the outer surface of the inserted reinforcing bar. The outer diameter is coupled to the inner diameter of the housing, and the inner diameter is connected to a sleeve having an inclined surface formed, and an inclined surface of the sleeve. A first gripping block including a wedge whose outer surface is in close contact and has a serrated inner diameter, and an elastic member that provides elasticity to the wedge in one direction; and a second gripping block having the same configuration as the first gripping block and coupled to the housing. It includes.

In addition, the wedge is characterized by an open slot portion formed in one longitudinal direction so that the inner diameter and outer diameter penetrate.

In addition, on the opposite side of the open slot part, a half-open slot part in which the inner diameter and the outer diameter are not penetrated but is partially connected is further formed.

In addition, at least one through hole is formed vertically on the central outer surface of the housing, and a means for checking the state of rebar joints is installed on the through hole.

In addition, the reinforcing bar joint status checking means is made of a Chemilite rod, and is characterized in that the Chemilite rod is compressed by the center plate member to emit light.

In addition, the means for checking the reinforcing bar joint status is to install a protruding pin coupled with a spring at the center so that when the protruding pin is pressed by the center plate member, the protruding pin protrudes outward.

In addition, the reinforcing bar joint condition checking means forms a link in the shape of a diamond and constitutes a hinge pin at each corner, and when pressed by reinforcing bars on both sides while the lower hinge pin among the hinge pins is fixed, the upper hinge It includes a link member through which the pin is moved upward, and a confirmation rod connected to the upper hinge pin to protrude onto the through hole.

In addition, the reinforcing bar joint condition checking means is coupled to an air tank filled with air and pressed by reinforcing bars, and the through hole, and a space is formed therein to maintain pressure by the air in the air tank. It includes a cylinder member to which this is applied, and a piston member located in the space of the cylinder member, flowing inward by the pressure of the air tank, and having a protruding pin at an end protruding outside the cylinder member.

In addition, it is coupled to both ends of the housing to support the first gripping block and the second gripping block coupled to the inside of the housing, and a tool coupling groove is formed on the outside so that it can be rotated by a tool, and the outer diameter is a screw. It includes a joined end cap.

As a technical idea for achieving the present invention, the reinforcing bar butt joint coupler according to the present invention does not generate clearance or slip when combining reinforcing bars, so it can be used for earthquake resistance, vibration resistance, and precision construction.

In addition, the rebar butt joint coupler according to the present invention allows the inspection process to be easily performed because the adjacent state of the rebar can be confirmed from the outside.

Figure 1 is an external perspective view of a rebar butt joint coupler according to the present invention.
Figure 2 is an exploded perspective view of the rebar butt joint coupler according to the present invention.
Figure 3 is a cross-sectional view of a rebar butt joint coupler according to the present invention.
Figure 4 is a wedge perspective view of the rebar butt joint coupler according to the present invention.
Figure 5 is a wedge side view of the rebar butt joint coupler according to the present invention.
Figure 6 is a cross-sectional view of the main part of the first embodiment of the reinforcing bar joint condition checking means applied to the reinforcing bar butt joint coupler according to the present invention.
Figure 7 is a cross-sectional view of the main part of the second embodiment of the reinforcing bar joint condition checking means applied to the reinforcing bar butt joint coupler according to the present invention.
Figure 8 is a cross-sectional view of the main part of the third embodiment of the reinforcing bar joint condition confirmation means applied to the reinforcing bar butt joint coupler according to the present invention.
Figure 9 is a cross-sectional view of the main part of the fourth embodiment of the reinforcing bar joint condition checking means applied to the reinforcing bar butt joint coupler according to the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the invention is defined by the claims.

Meanwhile, the terms used in this specification are for describing embodiments and are not intended to limit the present invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises” and/or “comprising” refers to the presence of one or more other elements, steps, operations and/or elements in the mentioned elements, steps, operations and/or elements. or addition is not excluded. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is an external perspective view of the rebar butt joint coupler according to the present invention, Figure 2 is an exploded perspective view of the rebar butt joint coupler according to the present invention, Figure 3 is a cross-sectional view of the rebar butt joint coupler according to the present invention, and Figure 4 is It is a perspective view of the wedge of the rebar butt joint coupler according to the present invention, and Figure 5 is a side view of the wedge of the rebar butt joint coupler according to the present invention.

Referring to Figures 1 to 5, the rebar butt joint coupler 100 according to the present invention includes a housing 110, a first center plate member 120, a second center plate member 130, and a first gripping block. (140), a second gripping block 150, and an end cap 160, and the first gripping block 140 and the second gripping block 150 have the same configuration, and are located on both sides of the housing 110. Each is fixed to a structure in which the reinforcing bars 200 inside are held with one touch.

The housing 110 is penetrated through the center so that the reinforcing bars 200 can be inserted on both sides, and the outer diameter size is secured by extruding the schdule pipe, thereby reducing production costs by omitting cutting processing. can do.

In addition, the housing 110 is provided with a plurality of through holes 111 and is provided with a reinforcing bar joint state checking means 170 that allows the joint state of the reinforcing bars 200 to be checked from the outside.

The first center plate member 120 forms a partition inside the housing 110 so that the ends of the reinforcing bars 200 are in close contact. In the drawing, the reinforcing bar on the right is moved to the left to move to the inside of the housing 110. is inserted into

The second center plate member 130 corresponds to the first center plate member 120 and has the same structure as the first center plate member.

The first gripping block 140 is installed on both sides of the housing 110 based on the middle, and is designed to grip the outer surface of the inserted reinforcing bar 200, and has an outer diameter of the housing 110. It is coupled to the inner diameter of the sleeve 141, the inner diameter of which is formed with an inclined surface, the outer surface is in close contact with the inclined surface of the sleeve 141, and the wedge 142 is formed with a sawtooth-shaped inner diameter, and the wedge 142 is formed in one direction. It includes an elastic member 143 that provides elasticity.

The wedge 142 is formed with an open slot portion 142a that is slotted in one longitudinal direction so that the inner diameter and outer diameter penetrate.

In addition, on the opposite side of the open slot portion 142a, a half-open slot portion 142b is further formed in which the inner diameter and outer diameter are not penetrated and are partially connected, thereby improving the pressing force on the reinforcing bar as the sleeve 141 is tightened. You can.

The second gripping block 150 has the same configuration as the first gripping block 140 and is coupled to the housing 110.

For reference, the first gripping block 140 and the second gripping block 150 installed on both sides of the housing 110 selectively grip the joints and ribs formed on the diameter and outer diameter of the reinforcing bar, thereby increasing the gripping force. It can be doubled and prevent slip.

The end cap 160 is coupled to both ends of the housing 110 to support the first gripping block 140 and the second gripping block 150 coupled to the inside of the housing 110.

In addition, a tool coupling groove 161 is formed in the end cap 160 to tighten the end cap 160 by inserting a tightening tool from the outside to tighten the first gripping block 140 and the second gripping block 150. ), thereby improving the gripping power of the rebar.

For reference, it should be noted that, excluding the end cap, a screw is formed on the sleeve of the second gripping block and a tool coupling groove is formed on the outer surface, so that the sleeve and wedge to which the reinforcing bars are combined can be tightened with a tightening tool.

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In the rebar butt joint coupler 100 of the present invention configured as described above, the end of the right rebar 200 is first inserted into the housing 110 as shown in the drawing, so that the end of the rebar 200 is in close contact with the first center plate member 120. , the opposite left reinforcing bar 200 is inserted into the housing 110 and positioned on the second center plate member 130.

At this time, the outer diameter of the reinforcing bar 200 is double coupled by the first gripping block 140 and the second gripping block 150.

Next, when the end cap 160 is tightened with a tightening tool, the sleeves 141 of the first gripping block 140 and the second gripping block 150 move forward, and on the contrary, the elastic elasticity is achieved through the one-way tightening structure. The wedge 142 moves backward together with the member 143, and as the wedge 142 moves backward, it tightens, thereby realizing a stable and reliable rebar connection.

In addition, by tightening the end cap 160 with a tightening tool, butt joints between the reinforcing bars 200 and the reinforcing bars 200 can be achieved, thereby achieving a welding effect.

Meanwhile, the reinforcing bar joint housing 110 of the present invention is equipped with a means for checking the state of the reinforcing bar joint from the outside while the reinforcing bar 200 is mated, which will be described in detail below.

Figure 6 is a cross-sectional view of the main part of the first embodiment of the reinforcing bar joint condition checking means applied to the reinforcing bar butt joint coupler according to the present invention.

Referring to FIG. 6, at least one through hole 111 is formed vertically on the central outer surface of the housing 110, and a reinforcing bar joint status checking means 170 is installed on the through hole 111.

The rebar joint status checking means 170 is made of a Chemilite rod 171, and is configured to emit light by squeezing the Chemilite rod 171 by the first and second center plate members 130. will be.

In addition, a rubber bushing 172 is coupled to the outside of the Chemilite rod 171 to facilitate coupling to the through hole 111.

The Chemilite rod (171) is filled with hydrogen peroxide (171a) and diphenyl oxalate (171b) separately inside the tube, and when the two chemicals are mixed by an external impact, it emits light for a certain period of time. It will be done.

The means for checking the status of the reinforcing bar joints 170 configured in this way is to first insert the reinforcing bar 200 into the housing 110 with one touch and then secondarily insert the end caps 160 at both ends of the housing with a tightening tool (Hook, not shown). When tightened with a wrench, the ends of the reinforcing bars 200 held in the first gripping block 140 and the second gripping block 150 are between the first and second center plate members 130 butted against each other in the center. By pressing the Chemilite rod (171) in the tube, the two solutions inside the tube mix and emit light, confirming with the naked eye that the reinforcing bars (200) are in close contact with each other and firmly fastened.

Due to this action, it is possible to confirm that certain and accurate rebar joints have been made at the construction site and provide a supervisory solution by taking photos.

Figure 7 is a cross-sectional view of the main part of the second embodiment of the reinforcing bar joint condition checking means applied to the reinforcing bar butt joint coupler according to the present invention.

Referring to FIG. 7, at least one through hole 111 is formed vertically on the central outer surface of the housing 110, and a reinforcing bar joint status checking means 170 is installed on the through hole 111.

The rebar joint status checking means 170 installs a spring-coupled protruding pin 173 in the center, and when the protruding pin 173 is pressed by the first and second center plate members 130, the protruding pin 173 is installed in the center. The pin 173 is made to protrude outward.

In addition, both ends of the protruding pin 173 are formed into hemispherical or cylindrical lower ends 173a and upper ends 173b with an outer diameter larger than the center to prevent the spring from being separated and to prevent the spring from being separated and to maintain the first center plate member 120 and the second center plate member 173. It is possible to facilitate the pressing of the plate member 130).

The reinforcing bar joint status checking means 170 configured in this way first inserts the reinforcing bar 200 into the housing 110 with one touch and then secondarily tightens the end caps 160 at both ends of the housing 110 (not shown). When tightened with a tool, the reinforcing bar 200 held in the first gripping block 140 and the second gripping block 150 moves forward, causing the first center plate member 120 and the second center plate member 130 to move forward. The protrusion presses the lower end (173a) of the protruding pin (173), and as the protruding pin (173) is pressed, the cylindrical upper part (173b) protrudes outward, showing that the reinforcing bars (200) are in close contact with each other and are firmly fastened to the naked eye. You can check it.

Due to this action, it is possible to confirm that certain and accurate rebar joints have been made at the construction site and provide a supervisory solution by taking photos.

Figure 8 is a cross-sectional view of the main part of the third embodiment of the reinforcing bar joint condition confirmation means applied to the reinforcing bar butt joint coupler according to the present invention.

Referring to FIG. 8, at least one through hole 111 is formed vertically on the central outer surface of the housing 110, and a reinforcing bar joint condition checking means 170 is installed on the through hole 111.

The reinforcing bar joint condition checking means 170 forms a link in the shape of a diamond, configures a hinge pin at each corner, and is pressed by reinforcing bars on both sides while the lower hinge pin 174a of the hinge pins is fixed. When the upper hinge pin (174b) is moved upward, it includes a link member (174) and a confirmation rod (175) that is connected to the upper hinge pin (174b) and protrudes onto the through hole (111). .

The reinforcing bar joint status checking means 170 configured in this way first inserts the reinforcing bar 200 into the housing 110 with one touch and then secondarily tightens the end caps 160 at both ends of the housing 110 (not shown). When tightened with a tool, the reinforcing bar 200 held in the first gripping block 140 and the second gripping block 150 moves forward between the first center plate member 120 and the second center plate member 130. As the link member 174 in the side is pressed on both sides based on the lower hinge pin 174a, the upper hinge pin 174b moves upward, and the confirmation bar 175 protrudes outward, so that the reinforcing bars come into close contact with each other with the naked eye. You can confirm that it is firmly fastened.

Due to this action, it is possible to confirm that certain and accurate rebar joints have been made at the construction site and provide a supervisory solution by taking photos.

Figure 9 is a cross-sectional view of the main part of the fourth embodiment of the reinforcing bar joint condition confirmation means applied to the reinforcing bar butt joint coupler according to the present invention.

Referring to FIG. 9, at least one through hole 111 is formed vertically on the central outer surface of the housing 110, and a reinforcing bar joint status checking means 170 is installed on the through hole 111.

The reinforcing bar joint condition checking means 170 is coupled to the air tank 176, which is filled with air inside and is pressed by the reinforcing bar 200, and the through hole 111, and has a space inside. A cylinder member 177 is formed and pressurized by the air of the air tank 176, and is located in the space of the cylinder member 177 and flows inward by the pressure of the air tank 176, A protruding pin at the end includes a piston member 178 that protrudes out of the cylinder member 177.

The reinforcing bar joint status checking means 170 configured in this way first inserts the reinforcing bar 200 into the housing 110 with one touch and then secondarily tightens the end caps 160 at both ends of the housing 110 (not shown). When tightened with a tool, the reinforcing bar 200 held in the first gripping block 140 and the second gripping block 150 moves forward between the first center plate member 120 and the second center plate member 130. The air tank 176 in the press is pressed, and the piston member 178 inside the cylinder member 177 protrudes outward due to the air pressure of the air tank 176, so that the reinforcing bars 200 are tightly adhered to each other with the naked eye. It can be confirmed that the contract has been concluded.

Due to this action, it is possible to confirm that certain and accurate rebar joints have been made at the construction site and provide a supervisory solution by taking photos.

The present invention has been described with reference to an embodiment shown in the accompanying drawings, but it will be understood by those skilled in the art that various modifications and other embodiments are possible.

100: rebar butt joint coupler 110: housing
111: Through hole 120: First center plate
130: Second center plate 140: First gripping block
141: sleeve 142: wedge
142a: open slot portion 142b: open slot portion
143: Elastic member
150: Second gripping block
160: End cap 161: Tool coupling groove
170: Means for checking the status of rebar joints 171: Chemilite rod
171a: hydrogen peroxide 171b: diphenyl oxalate
172: Rubber bushing 173: Protruding pin
173a: lower part 173b: upper part
174: Link member 174a: Lower hinge pin
174b: upper hinge pin 175: confirmation rod
176: air tank 177: cylinder member
178: piston member 200: rebar

Claims (12)

Housing with a central opening for insertion of rebar on both sides:
A first center plate member that forms a partition inside the housing and the ends of the reinforcing bars are in close contact with each other;
a second center plate member corresponding to the first center plate member;
It is installed on the inside of both sides based on the middle of the housing, and is designed to grip the outer surface of the inserted reinforcing bar. The outer diameter is coupled to the inner diameter of the housing, and the inner diameter is connected to a sleeve having an inclined surface formed, and an inclined surface of the sleeve. A first gripping block including a wedge whose outer surface is in close contact and has a serrated inner diameter, and an elastic member that provides elasticity to the wedge in one direction; and
a second gripping block having the same configuration as the first gripping block and coupled to the housing; Includes,
At least one through hole is formed vertically on the central outer surface of the housing, and a means for checking the state of rebar joints is installed on the through hole,
The reinforcing bar joint condition checking means forms a link in the shape of a diamond and constitutes a hinge pin at each corner, and when pressed by reinforcing bars on both sides while the lower hinge pin among the hinge pins is fixed, the upper hinge pin is A rebar butt joint coupler characterized by comprising a link member that moves upward, and a confirmation bar that is connected to the upper hinge pin and protrudes onto the through hole.
According to paragraph 1,
The wedge is a rebar butt joint coupler, characterized in that an open slot is formed with one slot in the longitudinal direction so that the inner diameter and outer diameter penetrate.
According to paragraph 2,
A rebar butt joint coupler, characterized in that a half-open slot part in which the inner diameter and the outer diameter are not penetrated and is partially connected is further formed on the opposite side of the open slot part.
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