JP2012255310A - Steel bar clip. closed type steel bar using the same and manufacturing method of closed type steel bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel bar clip, a closed type steel bar using the same and a manufacturing method of the closed type steel bar using the same in which a work burden on the job site can be reduced and a steel bar strength or the like can be maintained.SOLUTION: Stirrups 11 are disposed in one line at predetermined intervals while being bent in a rectangular shape or U shape. A main bar 12 is inserted inside each corner of each stirrup 11, and the main bar 12 is fixed (connected) to the stirrup 11 by a steel bar clip 13. In the steel bar clip 13, an expansion part 134 is provided at least on one side and no protruding part is included on the other side. Therefore, even if bending is applied to the stirrup 11, the steel bar clip 13 is neither deformed nor damaged.

Description

  The present invention relates to a reinforcing bar clip, a closed type reinforcing bar using the same, and a manufacturing method of the closed type reinforcing bar, and more particularly, easy manufacture and management while preventing a decrease in strength of a main reinforcing bar, reducing labor, man-hours and mounting. The present invention relates to a reinforcing bar clip capable of shortening time, a closed type reinforcing bar using the same, and a manufacturing method of the closed type reinforcing bar.

  In buildings and buildings such as buildings, closed rebars are used for columns and beams. A closed-type reinforcing bar has a plurality of stirrups (barbs) formed by bending a long bar-shaped reinforcing bar into a quadrangle at a predetermined interval, and the same part of each staggered bar, for example, each corner of a quadrangle It has been manufactured by arranging the main bars so as to pass sequentially through the positions, and joining the portions where the main bars and the stirrups intersect by spot welding or binding wires. However, if the main bar and the stirrup are joined by spot welding, the main bar is heated by the heat of the welding, and the cross-sectional defect or material change may occur due to the heat, which may reduce the strength of the reinforcing bar. For this reason, a structure has been used in which the main muscle and the stirrup are fixed by a bundle or hook without using spot welding that may cause a reduction in strength due to heating.

  A closed-type rebar using binding and hooks will be described. For example, the closed type reinforcing bar 100 shown in FIG. 9 forms a substantially U-shaped stirrup bar 101 having an open upper part by bending a long bar-shaped reinforcing bar, and both ends of the opened upper side are 135 ° each. The hook portions 102A and 102B are formed by bending at an angle of. The main muscles 103 and 103 (in this case, two) are arranged inside the hook portions 102A and 102B and the lower corners of the stirrup 101, respectively, and are further erected vertically to the stirrup 101. A plurality of abdominal muscles 104, 104 are arranged on the inner side of the long side with a predetermined pitch width, and are bound by a metal wire such as a mild steel wire. Finally, the cap-tie 105 is put on the opened upper side of the U-shaped stirrup 101 to complete the closed rebar.

  By the way, patent document 1 is disclosing the connection method of a unit reinforcing bar, curves the edge part vicinity of the reinforcing bar of one direction among the reinforcing bars which comprise a grid | lattice form, and winds this bending part around the reinforcing bar of another direction. In addition, the linear portion remaining on the tip end side of the unidirectional reinforcing bar has a superposed portion that overlaps the unidirectional reinforcing bar and narrows the curved portion so as to intersect with the linear portion. A closed ring with a bending angle of 225 ° is formed with the bending portion, and the bending portion is tightened so that the bending portion holds the reinforcing bar in the other direction without loosening by preventing the spring back by the frictional force of the overlapping portion. It is disclosed to connect a reinforcing bar and the reinforcing bar in one direction.

  On the other hand, a reinforcing bar clip has also been proposed so that the main bar and the stirrup can be joined without using spot welding. For example, Patent Document 2 discloses a standing slab bar which is formed by arranging beam bars (abdominal bars) and column bars (axis bars) orthogonally at predetermined intervals in a lattice pattern used for a reinforced concrete foundation and welding the intersections. Unit S, a slab anchoring unit T in which one slab anchoring bar is arranged orthogonally near the lower end of a slab bar receiving bar arranged parallel to the column bar, and a center where the reinforcing bar is inserted is inserted. The opening of the hole prepared in the above is formed narrower than the diameter of the reinforcing bar, and the protruding part is formed in the tangential direction of this hole by projecting on both sides of the opening, and a recess for fitting a reinforcing bar different from the reinforcing bar is formed. Disclosed is a configuration in which a slab fixing bar of a slab fixing unit T is raised using a reinforcing bar clip formed by molding material and attached to the lower end of a column bar of the slab reinforcing unit S by a reinforcing bar clip. Has been. As shown in FIG. 10, the reinforcing bar clip 200 has a hole 201 through which a slab fixing bar is inserted, and column bars are formed on the overhanging parts 203, 203 that protrude on both sides of the opening end of the hole 201. The recessed portion 202 to be fitted is formed in a C-shaped cross section. According to the reinforcing bar clip 200, since no binding is required when assembling the reinforcing bars, work efficiency can be improved.

Japanese Patent No. 4447469 Utility Model Registration No. 3074462

  The closed-type reinforcing bars are assembled in a box shape at the site by combining the ribs and the main reinforcing bars in a lattice shape and binding the intersecting portions with binding wires, and then bending them at predetermined locations. Since this assembling is performed manually, the assembling work using the binding wire is a troublesome and time-consuming work, and the work requires skill of the operator because it is necessary to ensure the strength. Therefore, it seems that simple and reliable binding can be performed by using an instrument such as the above-described reinforcing bar clip.

  For bending the streaks 101, the main bar 103, which is the base point of bending, is hooked with a claw and pulled downward to bring the main bar 103 into contact with the guides arranged on both sides of the claw and bend it at about 90 °. There are a method and a method of bending at about 90 ° by a so-called roll bender. An apparatus for implementing these will be described later. In the case of bending with a claw, it is bent so that the main bar 103 is located inside the formed corner, whereas in the case of bending with a roll bender, it is slightly outside the position where the main bar 103 is arranged. Will be bent. However, when the main bar 103 and the stirrup bar 101 arranged inside each corner part of the closed-type reinforcing bar are bundled using the conventional reinforcing bar clip 200, when bent by a claw, the left and right protruding parts There is a problem that the hole 201 is deformed because it is bent so that the angle 203 becomes 90 °, and when it is bent by a roll bender, the travel part 203 closer to the bending position There is a problem that a large load is applied to deform and damage the business trip part 203 and the hole part 201 is also deformed. Deformation and damage of the hole 201 and the business trip part 203 may cause a decrease in strength of the completed closed rebar.

  Further, in the case of a closed type rebar with a cap tie on the upper part, conventionally, the stirrup was bent and connected with the main bar 103 at 135 °, but the connection between the main bar and the stir bar is made stronger. It was hoped that.

  Therefore, the present invention has been made in view of such a problem, and in the case of assembling a closed-type reinforcing bar, spot welding or the like for the main reinforcing bar is not necessary, and the work load on the site is reduced and the reinforcing bar strength is maintained. It is an object of the present invention to provide a reinforcing bar clip, a closed type reinforcing bar using the same, and a manufacturing method of the closed type reinforcing bar.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a reinforcing bar clip for connecting a main bar and a stirrup to form a closed-type reinforcing bar, wherein the reinforcing bar clip has an approximately C cross-section in which an opening is formed. A body portion provided with a letter-shaped hole portion, the opening portions on both sides of the body portion where the opening portion is formed are further stretched, and the holes are formed in the opening end portion formed by stretching. An insertion hole having a substantially C-shaped cross section is formed in a direction perpendicular to the portion, the main bar is held by the hole, and the stirrup is held by the insertion hole so that both can be connected. Features.

  In order to solve the above-described problem, the present invention according to claim 2 is the reinforcing bar clip according to claim 1, wherein the insertion hole is formed on one side of the opening end portion along the central axis direction of the insertion hole. This is characterized in that an overhanging portion is provided.

  In order to solve the above-mentioned problem, the present invention according to claim 3 is provided with a plurality of ribs formed in a rectangular shape or a substantially U-shape by bending a reinforcing bar in a row at a predetermined interval. In the case of the reinforcing bar clip according to claim 2, a main bar is arranged at a predetermined corner of the stirrup shaped bar and the main bar and the stirrup are connected by the reinforcing bar clip according to claim 1. The present invention provides a closed type reinforcing bar formed by arranging and connecting so that the overhanging part is located on the opposite side to the bending position of the stirrup.

  In order to solve the above-mentioned problem, the present invention according to claim 4 is arranged such that a plurality of ribs formed in a U shape as a whole by bending a reinforcing bar are arranged in a row at predetermined intervals, and the U-shaped The main muscles are respectively arranged at the corners of the stirrups, and the main muscles arranged on the open end side of the stirrups are fixed by bending the open end side of the stirrups. A closed-type reinforcing bar having a cap tie attached to an upper portion thereof, wherein the main reinforcing bar arranged at a corner of the stirrup is connected to the stirrup by the reinforcing bar clip according to claim 1, and further, an open end of the stirrup The main bars arranged on the part side are fixed by a loop-shaped hook formed at a bending angle of 225 °.

  In order to solve the above-mentioned problem, the present invention according to claim 5 includes a step of arranging a plurality of stirrups formed in a rectangular shape or a substantially U shape by bending a reinforcing bar at a predetermined interval, A step of arranging main bars at predetermined intervals in a predetermined position of the stirrup, a step of connecting a portion where the stirrup and the main bar intersect with the reinforcing bar clip according to claim 1, and a preset bending position And a step of bending the abdominal muscles in order to form a U-shape or a rectangular shape.

  In order to solve the above-mentioned problem, the present invention described in claim 6 is the closed-type reinforcing bar manufacturing method according to claim 5, and further, when the abdominal muscle is U-shaped, As a step before or after the bending process, the method further comprises a step of forming hooks by bending the open ends of the stirrups to 225 °, respectively.

  According to the reinforcing bar clip, the closed type reinforcing bar using the same, and the manufacturing method of the closed type reinforcing bar according to the present invention, it is possible to reduce the work at the site, maintain the reinforcing bar strength, shorten the working time, and reduce the cost. There is an effect.

It is a perspective view showing one embodiment of a closed type reinforcing bar concerning the present invention. (A) is sectional drawing of the reinforcing bar clip used for the closed type reinforcing bar which concerns on this invention, (b) is the side view, (c) is sectional drawing of the reinforcing bar clip in other embodiment. It is a perspective view which shows the 1st process of the manufacturing method of the closed rebar which concerns on this invention. It is a perspective view which shows the 2nd process of the manufacturing method of the closed rebar which concerns on this invention. It is a perspective view which shows the principal part and reinforcing bar clip of the closed type stirrup obtained by the manufacturing method of the closed type reinforcing bar which concerns on this invention. It is a perspective view which shows the principal part of the closed-type reinforcing bar which concerns on this invention using another reinforcing bar clip, and a reinforcing bar clip. It is a figure which shows schematic structure of the bending apparatus of a roll vendor system. It is a perspective view which shows 2nd embodiment of the closed type reinforcing bar which concerns on this invention. It is a front view which shows the conventional closed rebar. It is sectional drawing which shows the attachment metal fitting used for the conventional closed rebar.

1. First embodiment [Configuration of closed rebar]
Hereinafter, a reinforcing bar clip according to the present invention, a closed type reinforcing bar using the same, and a manufacturing method of the closed type reinforcing bar will be described in detail based on a preferred embodiment. FIG. 1 is a perspective view showing a first embodiment of a closed type reinforcing bar according to the present invention. The illustrated closed-type reinforcing bar 1 is generally composed of a plurality of stirrups 11, 11 which are a stirrup 11 which is formed in a rectangular shape by bending a single reinforcing bar and is erected in a row at a predetermined interval. A total of four main muscles 12 and 12 arranged so as to be interposed inside four corners of the stirrups 11 and 11 arranged in a row, and the main muscles 12 and 12 and the stirrups 11 and 11. A plurality (four in this case) of reinforcing bar clips 13 and 13 and a plurality of (two in this embodiment) attached with a predetermined pitch inside the long side portion of the rib 11 Abdominal muscles 14, 14. For example, deformed bar steel is used for the ribs 11 and 11 and the main bars 12 and 12.

  The diameters of the staggered muscle 11 and the main muscle 12 are, for example, 10 mm and 13 mm, respectively, and the staggered muscles 11 and 11 are long enough to form a crossing portion having a predetermined length around the frame shape. It has a protruding part. Abdominal muscles 14 and 14 are arranged on the long side of the ribs 11 and 11. The abdominal muscles 14 and 14 may be attached to the ribs 11 by spot welding in addition to using the reinforcing bar clip 13.

[Rebar clip configuration]
Next, FIG. 2A for explaining a preferred embodiment of the reinforcing bar clip according to the present invention is a cross-sectional view of a preferred embodiment of the reinforcing bar clip according to the present invention, and FIG. 2B is a reinforcing bar clip shown in FIG. FIG. The illustrated reinforcing bar clip 13 is formed of a synthetic resin such as plastic, and as shown in FIGS. 2A and 2B, a hole 131 having a substantially C-shaped cross-section for inserting the main bar 12 is schematically shown. The main body portion 135 is provided, and an overhang portion 134 provided with an insertion hole 132 having a substantially C-shaped cross section for allowing the stirrup 11 to pass therethrough is configured. The main body portion 135 and the overhang portion 134 are arranged such that the center line of the hole 131 and the center line of the insertion hole 132 are orthogonal to each other, and the portion where the hole 131 and the insertion hole 132 intersect each other. Is provided with an opening 133 for communicating with the hole 131 and the outside. More specifically, a protruding portion 134 is formed on one opening end side of the main body 135 having a substantially C-shaped cross section, and the opening end on the other side is in the width direction of the protruding portion 134. An insertion hole 132 having a substantially C-shaped cross section communicating with the insertion hole 132 formed in the overhanging portion 134 is formed. As a result, the reinforcing bar clip 13 is fitted into the hole 131 and the insertion of the insertion hole 132 of the overhang part 134 and the insertion hole 132 formed at the extension part of the opposite end of the main body part 135. The streak 11 is fitted and both are firmly connected.

  Next, another embodiment of the reinforcing bar clip according to the present invention will be described. FIG.2 (c) is sectional drawing of the reinforcing bar clip 17 of other embodiment. The illustrated reinforcing bar clip 17 does not have the overhanging portion 134 in the above-described reinforcing bar clip 13, and is formed by extending both ends of the main body 135 in which the cross section of the reinforcing bar clip 17 is substantially C-shaped. Insertion holes 132, 132 each having a substantially C-shaped cross section are formed at both ends. Since the configuration other than that is substantially the same as that of the reinforcing bar clip 13, the same reference numerals are used and detailed description thereof is omitted.

  Here, Table 1 shows an example of dimensions of each part of the reinforcing bar clip 13. In Table 1 and FIG. 2, W is the distance between the centers of the holes 131 and 131 of the two reinforcing bar clips 13 and 13 arranged adjacent to each other, D is the inner diameter of the hole 131, and d is the inner diameter of the insertion hole 132. , H is the distance between the center of the hole 131 and the center of the insertion hole 132, and A is the width of the opening 133. The units are all “mm”.

[Manufacturing method of closed rebar]
Next, a method for manufacturing the above-described closed type reinforcing bar will be described. 3 and 4 are perspective views in each manufacturing process of the closed rebar 1. First, as shown in FIG. 3, both ends of a predetermined number of stirrups 11 and 11 are supported by the V grooves 20a of the first square bars 20A and 20A in which the V grooves 20a are previously formed at predetermined intervals. A plurality of second square members 20B, 20B in which V grooves 20a are previously formed at predetermined intervals along the longitudinal direction of the ribs 11, 11 are arranged, and the square members 20A, 20A, 20B, 20B are disposed on the square members 20A, 20A, 20B, 20B. The main muscle 12 and the abdominal muscle 14 are respectively arranged at predetermined intervals so as to be orthogonal to the ribs 11 and 11. The first square members 20A, 20A on which the stirrups 11, 11 are placed and the second square members 20B, 20B on which the main muscles 12 and the abdominal muscles 14 are placed are just as high as the length of the stirrups 11, 11. Is different.

  Next, in order to join the ribs 11 and 11 and the main bars 12 and 12, the reinforcing bars clips 13 and 13 are attached so as to be fitted to the corners of the ribs 11 and 11, respectively. At this time, the overhanging portion 134 of the reinforcing bar clip 13 is attached so as to be located on the side opposite to the position where the loose bar 11 is bent. That is, it attaches so that the overhang | projection parts 134 of two adjacent reinforcing bar clips 13 and 13 mutually oppose. The abdominal muscles 14 and 14 and the ribbed muscles 11 and 11 form a reinforcing bar RB using a clip similar to the reinforcing bar clip 13 or by spot welding.

  Next, the reinforcing bar RB is carried onto the bending device 30 shown in FIG. The bending device 30 includes a plurality of claws 31 and 31 that are configured to be movable up and down with a bowl shape at the top, and a pair of guides 32 and 32 that are arranged in parallel and horizontally on both sides of the claws 31 and 31. The claw 31 is configured to include a drive device and a control device (not shown) that raise and lower the claws 31. The operator first operates a control panel (not shown) of the folding device 30 so that the claws 31 are located at the uppermost position. Then, claws 31 and 31 are hooked to the main reinforcing bar 12 which is a base point of bending of the reinforcing bar RB. Next, the operator operates the control panel (not shown) to move the claws 31 and 31 gradually downward. Then, when the claws 31 and 31 are lowered, the ribs 11 and 11 constituting the reinforcing bar RB are gradually bent by coming into contact with the left and right guides 32 and 32, and finally the claws 31 and 31 are pulled downward to finally bend. Is bent at 90 °. When the ribs 11 and 11 are bent at a predetermined angle, the claws 31 and 31 are moved upward, the hooked state between the claws 31 and 31 and the main bar 12 is released, and the portion to be bent next (the first bending base point) The main muscle 12) adjacent to the formed main muscle 12 is hooked on the claws 31, 31. FIG. 4 shows a state in which the second folding is completed. Such bending processing is performed four times while changing the processing place for one loop of the streaks 11. As a result, the reinforcing bar RB having a planar shape is formed into a rectangular shape as viewed from the front, that is, a closed type (box type).

  On the other hand, the stirrups 11 and 11 are bent not only by the bending device 30 using the claws 31 and 31 but also by the bending device 40 using a roll bender. As schematically shown in FIG. 7, the bending device 40 using a roll bender includes a long base 41 including a plurality of latching portions 41 a and 41 a and a roll 42 arranged in parallel to the base 41. The roll 42 is attached to the base 41 via the connecting portion 43 so as to be able to stand up. Here, the roll 42 is raised by a drive device and a control device (not shown). The bending by the bending device 40 is performed as follows. In addition, illustration of the reinforcing bar clips 13 and 13 is omitted in FIG. First, the main reinforcing bar 12 that is a base point for bending the reinforcing bar RB is hooked and fixed to the plurality of hooking portions 41a and 41a. Then, the drive device and the control device (not shown) are operated to rotate the roll 42 counterclockwise to raise it. In this process, the leading ends of the streaks 11, 11 are bent at approximately 90 °. When the bending of the stirrups 11 and 11 is completed, the driving device and the control device (not shown) are operated to move the roll 42 to the original position (position shown in FIG. 7A). Then, the main bar 12 adjacent to the main bar 12 that is the base point of the bending first is hooked and fixed to the plurality of hooks 41a and 41a. And the bending process similar to FIG. 4 can be performed by repeating operation similar to the above.

[Effect of the first embodiment]
According to the closed type reinforcing bar and the reinforcing bar clip according to the first embodiment, since welding and binding are unnecessary, there is an effect that the main bar 12 and the stirrup 11 can be easily combined.
Further, when bending is performed using the bending device 40 by a roll bender, the bending is performed at a position outside the location where the main muscle 12 and the stirrup 11 intersect as shown in FIG. 5 due to the characteristics of the device. Therefore, when the reinforcing bar clip 13 is used, the reinforcing part 134 is attached so that the overhanging portion 134 of the reinforcing bar clip 13 is located on the side opposite to the position where the loose bar 11 is bent. That is, it attaches so that the overhang | projection parts 134 of two adjacent reinforcing bar clips 13 and 13 mutually oppose. As a result, deformation and damage of the reinforcing bar clip 13 due to the bending of the stirrup 11 are prevented and a reliable connection is realized, so that stable quality can be ensured. In addition, when bending using the bending apparatus 40 by a roll bender, the reinforcing bar clip 17 shown in FIG.2 (c) can also be used.
Further, when bending is performed using the folding device 30 with claws, the bending is performed at a location where the main muscle 12 and the stirrup 11 intersect as shown in FIG. 6 due to the characteristics of the device. By using the reinforcing bar clip 17 without the protruding portion 134, deformation or damage of the reinforcing bar clip 17 due to bending of the loose bar 11 is prevented, so that a reliable connection is realized, and a closed type reinforcing bar of stable quality can be provided. There is an effect.

2. Second Embodiment [Configuration of Closed Rebar]
Next, the closed reinforcing bar and the manufacturing method thereof according to the second embodiment will be described with reference to FIG. The closed rebar 2 is formed by bending the ribs 11 and 11 into a U shape, and hooks 15 and 15 are formed by bending the two open ends on the upper end side, respectively. Two main bars 12, 12 arranged in parallel to each other are fixed by hooks 15, 15. In this state, the side (upper side) where the main muscles 12 and 12 are fixed by the hooks 15 and 15 is not completely closed, so the two main muscles 12 and 12 arranged in parallel are bridged. The closed rebar 2 is formed by attaching the cap tie 16. The cap tie 16 is a member whose both ends are bent into a U shape by a rebar similar to the rib 11 and the front shape is an approximately “U” shape with a katakana name. It is bridged between the main muscles 12,12. As described above, the closed rebar 2 according to the present embodiment is different from the closed rebar 1 according to the first embodiment described above in that the two rebars 11, 11 are arranged in the U-shaped portion on the lower side. Two reinforcing bar clips 13 and 13 or reinforcing bar clips 17 and 17 are used for coupling to the main bars 12 and 12, and 225 is used for coupling to the two main bars 12 and 12 arranged on the upper side of the stirrups 11 and 11. They are connected using hooks 15 and 15 having curved portions bent at an angle, respectively.

  The hooks 15 and 15 are formed after bending the streaks 11 and 11 using the bending device 30 or the bending device 40 described above, or before performing the bending processing. The hook 15 is wound around the main muscle 12 so as to be in close contact with the gap as much as possible. Further, the bending angle on the open end side of the stirrup 11 is preferably around 225 °. Further, if the bent tip side is bent so that it overlaps with the straight line portion of the streaks 11, a frictional force is generated between them, so that the springs 15 and 15 are prevented from springback and can be held without looseness. . Further, by using different diameter reinforcing bars for the ribs 11, the outer peripheral surfaces and ribs of the deformed reinforcing bars are hooked to each other, so that the spring back of the hooks 15 can be further prevented and the main bars 12 can be fixed more firmly.

[Effect of the second embodiment]
According to the closed type reinforcing bar according to the second embodiment, the same effect as that of the first embodiment can be obtained, and the reinforcing bar clip is provided by providing the hooks 15 and 15 on the upper parts of the stirrups 11 and 11, respectively. There is an effect that 13 can be made unnecessary.
In addition, by forming the hooks 15 and 15 in advance, it is possible to finish the installation of the closed-type reinforcing bars only by inserting the main bars 12 and 12 into the hooks 15 and 15 and attaching the cap tie 16 at the site. There is.

  As described above, the preferred embodiment of the present invention has been described in detail. However, the present invention is not limited to the specific embodiment, and within the scope of the gist of the present invention described in the claims, Needless to say, various modifications and changes are possible. For example, in each of the above embodiments, the main muscles 12 and 12 are arranged inside the stirrups 11 and 11, but may be arranged outside the stirrups 11 and 11 and fixed by the reinforcing bar clip 13 or the reinforcing bar clip 17. .

  Further, in each of the above embodiments, the deformed reinforcing bars having ribs are used for the main reinforcing bars 12 and 12 and the stirrups 11 and 11, but the present invention is not limited to deformed reinforcing bars.

DESCRIPTION OF SYMBOLS 1 Closed-type reinforcing bar 2 Closed-type reinforcing bar 11 Stirrup 12 Main bar 13 Reinforcing bar clip 14 Abdominal muscle 15 Hook 16 Cap tie 17 Reinforcing bar clip 20A First square bar 20B Second square bar 20a V groove 30 Bending device 31 Claw 32 Guide 40 Bending Device 41 Base 41a Hooking part 42 Roll 43 Connecting part 131 Hole part 132 Insertion hole 134 Overhang part 135 Body part RB Rebar

Claims (6)

In the reinforcing bar clip to connect the main bar and the stirrup to form a closed type reinforcing bar,
The reinforcing bar clip includes a main body provided with a hole having a substantially C-shaped cross section in which an opening is formed, and is formed by further extending both side opening ends of the main body in which the opening is formed. An insertion hole having a substantially C-shaped cross section is formed in a direction perpendicular to the hole portion at the opening end portion formed by stretching together with the hole, the main bar is held by the hole portion, and the ribs are formed by the insertion hole. Reinforcing bar clip characterized in that both can be connected by holding the streak. The reinforcing bar clip according to claim 1,
A reinforcing bar clip, characterized in that an overhanging portion is provided on one side of an opening end portion in which the insertion hole is formed, along the center axis direction of the insertion hole.   A plurality of stirrups formed in a rectangular shape or a substantially U-shape by bending a reinforcing bar are arranged in a row at a predetermined interval, a main bar is disposed at a predetermined corner of the rectangular stirrup, The main bar and the stirrup are connected by the reinforcing bar clip according to claim 1, or in the case of the reinforcing bar clip according to claim 2, the overhanging part is located on the side opposite to the bending position of the stirrup. A closed rebar formed by arranging and connecting in this way. A plurality of stirrups that are formed in a U shape by bending the reinforcing bars are arranged in a row at predetermined intervals, and main bars are respectively arranged at corners of the U-shaped stirrups, and In the closed-type reinforcing bar in which the main bar arranged on the open side end side is fixed by bending the open end side of the stirrup, and a cap tie is attached to the upper part of the stirrup,
The main muscle arranged at the corner of the stirrup is connected to the stirrup by the reinforcing bar clip according to claim 1, and the main muscle arranged at the open end side of the stirrup is further bent at 225 °. A closed type reinforcing bar fixed by a loop-shaped hook formed at an angle. Arranging a plurality of stirrups formed in a rectangular shape or a substantially U shape by bending the reinforcing bars at a predetermined interval;
Disposing main muscles at predetermined intervals in predetermined locations of the plurality of stirrups,
Connecting the portion where the stirrup and the main bar intersect with the reinforcing bar clip according to claim 1,
Sequentially applying the abdominal muscles at a preset bending position to form a U shape or a rectangle;
A closed-type reinforcing bar manufacturing method characterized by comprising: In the manufacturing method of the closed type reinforcing bar according to claim 5,
Further, in the case where the abdominal muscles are U-shaped, as a step before or after the bending process, a step of forming hooks by bending the open ends of the stirrups to 225 ° respectively. A closed-type reinforcing bar manufacturing method comprising:

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