JPH05163797A - Reinforced binding wember and method and device for binding work - Google Patents

Abstract

PURPOSE:To enhance the binding work efficiency. CONSTITUTION:A reinforced binding member 20 is formed of U-shaped soft steel wires and is constituted of legs 22 and 22 opposed to a head section 21 each other, hook sections 23 and 23 bent and formed outward to the front ends of the legs 22 and 22 together as a unit. Accordingly, for forming the binding member of the soft steel wires, the binding member itself can be easily deformed, and the reinforced binding member can be easily twisted. The inside reinforcement is covered with the head section and the legs, the hook sections of the legs are hooked to the outside reinforcement, the adherence of the legs to the connected reinforcement is made by twisting the legs, the intersecting reinforcement can be surely bound, and binding work efficiency can be promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar binding member suitable for various construction and civil engineering works, and a binding method and apparatus therefor.

[0002]

2. Description of the Related Art In the conventional reinforcing bar binding work of various construction and civil engineering works, the surroundings of intersecting reinforcing bars and reinforcing bars are covered with a binding iron wire. Hook a hacker on this binding iron wire, rotate this hacker around an axis orthogonal to the longitudinal direction, abut the binding iron wire and twist it, stick the binding iron wire to each rebar, rebar and rebar And united.

Further, a clip binding machine for fixing the reinforcing bars to each other with clips is used. This clip binding machine is shown in FIG.
It will be described with reference to FIGS. As shown in FIG. 12, the clip binding machine 1 includes a tubular clip binding machine body 2 and a clip 3 made of an elastic member. In this clip 3, as shown in FIG. 10, an annular portion 4 is provided in the central portion, and hook portions 5 and 5 are provided at both ends extending outward from the annular portion 4, respectively. On the other hand, the clip binding machine main body 2 is provided with a guide rod 6 projecting forward and an arm portion 7 that can be expanded and contracted in a direction along the guide rod 6 at the tip portion. Then, a holding portion 8 for holding the clip 3 is pin-connected to the tip of the arm portion 7, and an operation portion (not shown) for operating the expansion and contraction of the arm portion 7 is provided at the rear end portion of the clip binding machine body 2. Has been.

A method of binding the reinforcing bar 10 (main reinforcing bar) to the reinforcing bar 9 (shear reinforcing bar) using the clip binding machine 1 will be described. First, the arm portion 7 of the clip binding machine body 1 is contracted, and the clip 3 is attached to the holding portion 8 of the clip binding machine body 2. (1) Bundling of the bent shear reinforcements at the corners The shear reinforcements 9 are bent from the vertical direction to the horizontal direction,
A main bar 10 is arranged near the inside of the bent shear reinforcing bar 9. First, the sandwiching portion 8 of the clip binding machine body 2 is made orthogonal to the axis of the clip binding machine body 2, and one hook portion 5 of the clip 3 is hooked on the shear reinforcing bar 9 extending in the vertical direction. Then, the guide rod 6 of the clip binding machine body 2 is arranged outside the main bar, and the tip end portion of the guide bar 6 is arranged below the shear reinforcing bar 9 extending in the horizontal direction. Then, as shown in FIG. 14, the arm portion 7 is extended, and the other hook portion 5 of the clip 3 is hooked on the shear reinforcing bar 9 extending in the horizontal direction. In this way, the clip 3 is attached to the shear reinforcing bar 9, and the main bar 10 is fixed to the shear reinforcing bar 9 by pulling up the clip binding machine body 2.

(2) Binding of linear shear reinforcing bar In this linear shear reinforcing bar, the main reinforcing bar is placed on the shear reinforcing bar 9 extending in the horizontal direction. First, one end of the holding portion 8 of the clip binding machine body 2 is tilted downward, and the tip of the clip binding machine body 2 is pushed below the shear reinforcing bar 9 to move the clip binding machine body 2 rightward around its own axis. Rotate,
The one hook portion 5 of the clip 3 is hooked on the shear reinforcing bar 9. Then, the clip tying machine body 2 is pulled up to move the guide bar 6 to a position 180 degrees around the position where the main bar 10 is present, and the tip of the guide bar 6 is pushed below the shear reinforcing bar 9. In this way, by straddling the clip 3 on the main bar 10 and rotating the clip binding machine body 2 rightward around its own axis, the other hook portion 5 of the clip 3 is rotated.
Is hooked on the shear reinforcing bar 9. Then, the clip binding machine main body 2 is pulled up to fix the main reinforcement 10 to the shear reinforcement reinforcement 9.

[0006]

By the way, since the reinforcing bar binding work using a hacker is performed manually, a working space for a worker is required. Therefore, it is difficult to bind the reinforcing bars in a small work space such as the lower part of the beam, and the binding work using a hacker requires skill.
It was difficult to automate rebar binding work using hackers.

Further, in the reinforcing bar binding work using the clip binding machine, when binding to the bent shear reinforcing bar 9, the reinforcing bar binding work is performed by expanding and contracting the arm portion 6, and when binding to the linear shear reinforcing bar 9. Since the reinforcing bar binding work is performed by moving the clip binding machine main body 2 to, the work according to each case must be performed, and the reinforcing bar binding work becomes complicated,
It is not suitable for automating the work of binding reinforcing bars, and the main bar 1
Since 0 is sandwiched between clips 3, clip 3 is attached to main bar 10.
Do not come into close contact with each other, and the shear reinforcing bar 9 and the main bar 10 cannot be sufficiently bound.

The present invention effectively solves the above-mentioned problems, and an object of the present invention is to provide a reinforcing bar binding member which can improve the workability of binding reinforcing bars and can be surely bound, and a binding method and apparatus therefor.

[0009]

A reinforcing bar bundling member according to claim 1 is a reinforcing bar bundling member for bundling intersecting reinforcing bars and reinforcing bars, the reinforcing bar bundling member including head portions and leg portions facing each other. A reinforcing bar bundling member comprising a U-shaped mild steel wire having hook portions formed by bending the distal ends of these legs.

According to a second aspect of the present invention, there is provided a reinforcing bar binding method according to the first aspect.
A method of binding reinforcing bars using the reinforcing bar binding member described,
The leg portion of the reinforcing bar binding member is sandwiched on the outside of the intersecting reinforcing bar, and the head portion of the reinforcing bar binding member is rotated about an axis parallel to the leg portion so that each hook portion is located at a position where it is caught by the outer reinforcing bar. Then, the reinforcing bar binding member is moved to the axial direction head side of the leg part to hook each hook part on the outer reinforcing bar, and the head part of the reinforcing bar binding member is rotated in the direction opposite to the rotation direction of the head part, respectively. It is characterized in that the legs are brought into contact with each other and twisted to bind the reinforcing bars to each other.

A reinforcing bar bundling device according to a third aspect of the present invention is the first aspect of the present invention.
A binding device using the reinforcing bar binding member according to claim 1, which has a double structure of an inner cylinder and an outer cylinder movably provided in an axial direction of the inner cylinder, and the outer cylinder includes a reinforcing bar binding member. A slit-shaped holding portion for holding the leg portion is formed, and a fitting portion for fitting the head portion of the reinforcing bar binding member is formed in the inner cylinder.

[0012]

In the reinforcing bar binding member according to the first aspect of the present invention, the head and the leg portions facing each other cover the reinforcing rods on the inner side, and the hook portions bent and formed at the tips of the respective leg portions are on the outer side. Hooked on the rebar. Since this reinforcing bar binding member is made of U-shaped mild steel wire, it can be easily deformed.

In the reinforcing bar binding method according to the second aspect of the present invention, the reinforcing bars that cross the legs of the reinforcing bar binding member are sandwiched, and the head of the reinforcing bar binding member is rotated about an axis parallel to the legs, whereby each leg is rotated. The portion is twisted by being hooked on the outer reinforcing bar, and the bent hook portions are arranged at positions where they are caught by the outer reinforcing bar.
Then, the hook portions are hooked on the outer reinforcing bars by moving the reinforcing bar binding member toward the head side in the axial direction of the legs. By rotating the head in a direction opposite to the direction of rotation of the head, the legs are twisted and brought into contact with each other, the legs are brought into close contact with the inner rebar, and the inner rebar and the outer rebar are bound together. ..

In the binding device for a reinforcing bar binding member according to a third aspect, the fitting portion formed on the inner cylinder is exposed by moving the outer cylinder in the axial direction of the outer cylinder, and the reinforcing bar binding member is attached to the fitting portion. The heads of are fitted. Then, by moving the outer cylinder in the axial direction of the inner cylinder, both leg portions of the reinforcing bar binding member are clamped by the clamp portion of the outer cylinder. In this way, the head of the reinforcing bar binding member is fitted to the fitting portion of the inner cylinder to suppress the movement of the head, and the legs of the outer cylinder are clamped to suppress the rotation of the legs. The reinforcing bar binding member is fixed to the binding device.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the reinforcing bar binding member and the binding method and apparatus therefor according to the present invention will be described below with reference to FIGS. The reinforcing bar bundling member 20 used here is
A reinforcing bar binding member for binding intersecting reinforcing bars and reinforcing bars, and as shown in FIG. 1, a head portion 21 and leg portions 22, 22 facing each other, and distal end portions of these leg portions 22, 22 outwardly outward. It is made of a U-shaped mild steel wire integrally formed with the bent hook portions 23, 23. This reinforcing bar binding member 2
In 0, for example, an unannealed mild steel wire such as SWMR6 or SW-40C is used, and the shape of each part has an outer diameter of 2 mm and a head 21 of 25 mm.
The legs 22 and 22 are 95 mm, and the hooks 23 and 23 are
Is 25 mm.

A reinforcing bar bundling device 25 using the reinforcing bar bundling member 20 includes an inner cylinder 26 and an inner cylinder 26 as shown in FIG.
It has a double structure with the outer cylinder 27 that is provided so as to be movable in the axial direction. The inner cylinder 26 has, for example, a length of 1300 mm, a cylindrical guide member 28 is provided at the front end, and an end cap (not shown) is provided at the rear end. In this guide member 28, the tip portion is made spherical, and a plurality (two in the figure) of fitting the head portion 21 of the reinforcing bar binding member 20 to the central portion.
The groove-like fitting portions 29, 29 are formed so as to be orthogonal to the axis of the inner cylinder 26. On the other hand, the outer cylinder 27 is, for example, 1185 mm.
Of the outer cylinder 27 along with its own axial direction.
Of the slit-shaped holding portions 30 and 30 that are opposed to each other substantially in the radial direction
Is provided at the front end and an intermediate collar (not shown) is provided at the rear end. A coil spring that covers the outer circumference of the inner cylinder 26 is attached to the intermediate collar of the outer cylinder and the end cap of the inner cylinder 26.

These reinforcing bar binding members 20 and reinforcing bar binding device 2
2 to 12 for the reinforcing bar bundling method using
Will be described. First, the outer cylinder 27 is moved rearward along the axial direction of the outer cylinder 27, and each fitting portion 2 of the guide member 28 is moved.
9 and 29 are exposed, and as shown in FIG. 2, the head portion 21 of the reinforcing bar binding member 20 is fitted to the fitting portion 29 at the front. Then, the outer cylinder 27 is moved forward, and as shown in FIG. 3, the reinforcing bar bundling member 20 is attached to the holding portions 30, 30 of the outer cylinder 27.
The leg portions 22 and 22 are fitted to hold the leg portions 22 and 22, and the reinforcing bar binding member 20 is fixed to the reinforcing bar binding device 25.

The tip portion of such a reinforcing bar binding device 25 is
It is pushed onto the main reinforcement 36 placed on the linear shear reinforcement reinforcement 35 and, as shown in FIG. 4, the head 21 of the reinforcing bar binding member 20.
The main reinforcement 36 and the shear reinforcement 35 that intersect with the leg portions 22, 22 facing each other are sandwiched, and the legs 22, 22, the shear reinforcement 35, and the main reinforcement 36 are arranged in this order in the left direction around the axis of the reinforcing bar binding device 25. , The hook portions 23 are arranged below the shear reinforcing bar 35. Then, as shown in FIG. 5, the reinforcing bar binding device 25
Rotate left around its own axis. At this time, the legs 22, 22 of the reinforcing bar bundling member 20 contact the shear reinforcing bar 35, and by further rotating the reinforcing bar bundling device 25,
As shown in FIG. 6, the leg portions 22 and 22 are twisted, and the hook portions 23 and 23 are arranged at positions crossing the axis of the shear reinforcing bar 35.

In this state, by pulling up the reinforcing bar binding device 25 in the axial direction of itself, the reinforcing bar binding member 20 is pulled up, and the hook portions 23, 23 are hooked on the shear reinforcing bar 35 as shown in FIG. Then, as shown in FIG.
The reinforcing bar binding device 25 is rotated to the right around its own axis, and the legs 22, 22 are twisted and brought into contact with each other, as shown in FIG. Further, by rotating the reinforcing bar bundling device 25, as shown in FIG. 10, each leg 22, 22 is twisted in a plurality of layers, and each leg 22, 22 of the reinforcing bar bundling member 20 is brought into close contact with the main bar 36. And the shear reinforcing bar 35 and the main bar 36 are firmly bound together.

Next, a binding operation for binding the main bar to the bent shear reinforcing bar will be described. This binding work is, for example, a work of binding the shear reinforcing bar bent from the vertical direction to the horizontal direction and the main bar with the reinforcing bar binding member 20. First,
Similarly to the above, the reinforcing bar binding member 20 is fixed to the reinforcing bar binding device 25. A main bar 36 that intersects the head section 21 of the reinforcing bar binding member 20 and the leg sections 22, 22 facing each other is sandwiched, and the leg sections 22, 22, the shear reinforcing bar, and the main bar are arranged in the leftward direction around the axis of the reinforcing bar binding device 25. Then, one hook portion 23 is arranged outside the shear reinforcing bar extending in the vertical direction, and the other hook portion 23 is arranged outside the shear reinforcing bar extending in the horizontal direction. Then, the reinforcing bar binding device 25 is rotated to the left around its own axis, the leg portions 22, 22 of the reinforcing bar binding member 20 are brought into contact with the shear reinforcing bar, and the leg portions 22, 22 are twisted, and the hook portion 23, 23 is located transverse to the axis of the shear reinforcement.

In this state, by pulling up the reinforcing bar binding device 25 in the axial direction of itself, the reinforcing bar binding member 20 is pulled up, and the hook portions 23, 23 are hooked on the shear reinforcing bar. Then, the reinforcing bar binding device 25 is rotated to the right around its own axis, and the leg portions 22, 22 are twisted and brought into contact with each other. Further, by rotating the reinforcing bar binding device 25, the leg portions 22 and 22 are twisted in a plurality of layers, and the reinforcing bar binding member 20 is rotated.
The respective leg portions 22, 22 are closely attached and tightened to the main bar, and the shear reinforcing bar and the main bar are tightly bound.

The hook portions 23, 23 of the reinforcing bar bundling member 20 of the above-described embodiment are bent outward, but the invention is not limited to this, and the hooks 23, 23 may be bent according to the situation of the reinforcing bars to be connected.
The legs 22 and 22 may be bent around the axis in any direction. Further, in the above-described embodiment, the reinforcing bar binding device 25 is rotated to the left around its own axis and then to the right, but the leg portions 22, 2 are rotated to the right around the axis of the reinforcing bar binding device 25.
2. When the shear reinforcing bar 35 and the main reinforcing bar 36 are arranged in this order, they may be rotated in the opposite direction of the above embodiment. Further, in the above-described embodiment, the two fitting portions 29 are provided on the guide member 28, but the number of fitting portions 29 is not limited to this, and a plurality of fitting portions 29 may be provided, and they are connected when binding two or more reinforcing bars. The head 21 of the reinforcing bar bundling member 20 may be fitted to the fitting part suitable for the condition of the reinforcing bar.

According to the reinforcing bar bundling member 20 as described above, the main bar 3 is composed of the head 21 and the legs 22, 22 facing each other.
Since the outer periphery of 6 is covered and the hook portions 23, 23 provided on the respective leg portions 22, 22 are hooked on the shear reinforcing bar 35, even if the shear reinforcing bar is bent, the shear reinforcing bar is bent. Can be handled in the same way as when the has a linear shape. Since the reinforcing bar bundling member 20 is made of U-shaped mild steel wire, the reinforcing bar bundling member 20 itself can be easily deformed, and the reinforcing bar bundling member 20 can be easily bound. Further, since the reinforcing bar binding member 20 is not annealed, the reinforcing bar binding member 20 is unlikely to break during binding, and the main reinforcing bar 36 can be reliably bound to the shear reinforcing bar 35.
Further, by twisting the leg portions 22, 22 of the reinforcing bar binding member 20, the leg portions 22, 22 are brought into close contact with the main bar 36,
The intersecting main reinforcement 36 and the shear reinforcement reinforcement 35 can be reliably connected, and the binding workability can be improved. In this way, since the reinforcing bar binding member 20 having a simple shape can be used for binding, the reinforcing bar binding member 20 can be provided at low cost.

According to such a reinforcing bar bundling method, the head reinforcement 21 of the reinforcing bar bundling member 20 is sandwiched by the main reinforcement 36 and the shear reinforcing bar 36 which intersect the legs 22 of the reinforcing bar bundling member 20. , 22 about the axis that is parallel to the hooks 23, 23, and the bent hooks 23, 23 are reinforced by the shear reinforcement 35.
Place the reinforcing bar binding member 20 in the leg 2
By moving 2 and 22 to the axial head 21 side,
Since the hook portions 23 are hooked on the shear reinforcing bar 35, connection work to the shear reinforcing bar 35 can be facilitated. Then, the head portion 21 is rotated in the direction opposite to the rotation direction of the head portion 21, the leg portions 22, 22 are twisted and brought into contact with each other, and the leg portions 22, 22 are brought into close contact with the main muscle 36,
The main reinforcement 36 can be bound to the shear reinforcement reinforcement 35 reliably. In this way, since the reinforcing bar binding work is performed by the rotation of the head 21 of the reinforcing bar binding member 20 and the movement of the leg 22 in the direction parallel to the axis, the reinforcing bar binding work can be simplified.

According to such a reinforcing bar binding device 25, the inner cylinder 2 is moved by moving the outer cylinder 27 in its own axial direction.
Since the head portion 21 of the reinforcing bar binding member 20 is fitted to the fitting portion 29 of No. 6, and the leg portions 22 and 22 of the reinforcing bar binding member 20 are clamped to the clamping portion 30 of the outer cylinder 27, the reinforcing bar binding member 20 is It can be easily fixed to the binding device 25. Further, since the reinforcing bar binding device 25 having a tubular shape is used to perform the reinforcing bar binding work, a working space is unnecessary, and even in a narrow place,
Can perform binding work. According to the reinforcing bar binding member and the binding method and device thereof, the main bar 3 is rotated by the rotation of the reinforcing bar binding device 25 around the axis and the axial movement of the reinforcing bar binding device.
Since 6 is bound to the shear reinforcing bar 35, the reinforcing bar binding work can be simplified and the reinforcing bar binding work can be automated.

<Other Embodiments> This reinforcing bar binding member 40 is
As shown in FIG. 11, the head portion 21 and the leg portion 2 facing each other
2, 22 and hook portions 41, 41 bent outwardly at the tips of the leg portions 22, 22, respectively, are formed of a U-shaped mild steel wire. These hook portions 41,
41 is formed in a circle having substantially the same diameter as the outer diameter of the shear reinforcing bar 35 to be hooked, and has its tip protruding outward.
In such a reinforcing bar binding member 40, the hook portion 41 can be hooked over the outer periphery of the shear reinforcing bar 35, so that the reinforcing bar binding member 40 can be firmly connected to the shear reinforcing bar 35.

[0027]

As described above, according to the reinforcing bar binding member and the binding method and device of the present invention, the following effects can be obtained. According to the reinforcing bar bundling member of claim 1, since the reinforcing bar bundling member is made of a U-shaped mild steel wire,
The deformation of itself is facilitated, and the reinforcing bar binding member can be easily twisted. Then, the inner reinforcing bars that are connected to the head and the legs that face each other are covered, the hooks of the respective legs are hooked on the outer reinforcing bars, and the legs of the reinforcing bar binding member are twisted to form these legs. The portions are closely attached to the reinforcing bars to be connected, and the intersecting reinforcing bars can be reliably bound, and the binding workability can be improved. As described above, since the reinforcing bar binding member having a simple shape can be used for binding, the reinforcing bar binding member can be provided at low cost.

In the reinforcing bar binding method according to the second aspect, the reinforcing bars which cross the legs of the reinforcing bar binding member are sandwiched, and the head of the reinforcing bar binding member is rotated about an axis parallel to the legs and bent. Since each hook part is arranged at a position where it is caught by the outer reinforcing bar, and the reinforcing bar binding member is moved in the axial direction of the leg part, and each hook part is hooked on the outer reinforcing bar, the work of connecting to the outer reinforcing bar can be facilitated. it can. Then, the head is rotated in a direction opposite to the direction of rotation of the head, and the legs are twisted and brought into contact with each other, and these legs are tightly attached to the inner reinforcing bars, and the inner reinforcing bars are securely bound to the outer reinforcing bars. be able to. In this way, since the reinforcing bar binding work is performed by the rotation of the head of the reinforcing bar binding member and the movement of the leg in the direction parallel to the axis, the reinforcing bar binding work can be simplified.

In the reinforcing bar bundling device according to the third aspect, the head of the reinforcing bar bundling member is fitted in the fitting part of the inner cylinder by moving the outer cylinder in the axial direction of the outer cylinder, and is held in the holding part of the outer cylinder. Since both legs of the reinforcing bar binding member are clamped, the reinforcing bar binding member can be easily fixed to the reinforcing bar binding device. Further, since the reinforcing bar binding device is used to perform the reinforcing bar binding work, no working space is required and the binding work can be performed even in a narrow space. According to such a reinforcing bar binding device, the rotation of the reinforcing bar binding device about the axis and the movement of the reinforcing bar binding device in the axial direction cause the inner reinforcing bar to be bound to the outer reinforcing bar shear, thus simplifying the reinforcing bar binding work. Therefore, the reinforcing bar binding work can be automated.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a reinforcing bar binding member of the present invention.

FIG. 2 is a perspective view showing an embodiment of the reinforcing bar binding device of the present invention.

FIG. 3 is a perspective view showing the outer cylinder of FIG. 2 after being moved.

FIG. 4 is a side view of the reinforcing bar binding member of FIG. 1 inserted into a crossing reinforcing bar.

FIG. 5 is a front view of FIG.

6 is a front view after the head of FIG. 4 is rotated.

FIG. 7 is a side view of the reinforcing bar binding member of FIG. 6 after being pulled up.

FIG. 8 is a front view after the head of FIG. 7 is rotated.

9 is a side view of FIG.

FIG. 10 is a side view showing the state after binding of FIG. 9;

FIG. 11 is a side view showing a modified example of FIG.

FIG. 12 is a side view showing a binding operation for a conventional bent reinforcing bar.

13 is a side view showing the reinforcing bar binding member of FIG. 12. FIG.

FIG. 14 is a side view showing the state after binding of FIG.

FIG. 15 is a side view showing a binding operation for a conventional linear reinforcing bar.

16 is a side view showing the state after binding in FIG.

[Explanation of symbols]

 20 Reinforcing Bar Binding Member 21 Head Part 22 Leg Part 23 Hook Part 25 Reinforcing Bar Binding Device 26 Inner Cylinder 27 Outer Cylinder 29 Fitting Part 30 Clamping Part 35 Reinforcing Bar (Shear Reinforcing Bar) 36 Reinforcing Bar (Main Bar)

 ─────────────────────────────────────────────────── ─── Continued front page (72) Toru Nakagawa Toru Nakagawa 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Katsumi Matsumura 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Mikio Noguchi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Hiromi Ono 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. ( 72) Inventor Yasuo Kajioka 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Sato et al. 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (3)

[Claims] 1. A reinforcing bar binding member for binding intersecting reinforcing bars and reinforcing bars, wherein the reinforcing bar binding member includes a head portion facing each other, and a hook portion bent and formed at a tip portion of the leg portion. A reinforcing bar binding member comprising a U-shaped mild steel wire having 2. A method of binding reinforcing bars using the reinforcing bar binding member according to claim 1, wherein the leg portions of the reinforcing bar binding member are sandwiched outside the intersecting reinforcing bars, and the head of the reinforcing bar binding member is Rotate it around an axis that is parallel to the legs, place each hook at a position where it will be caught by the outer rebar, move the reinforcing bar binding member to the axial head side of the leg, and move each hook to the outer rebar. Hooking, rotating the head of the reinforcing bar binding member in the direction opposite to the direction of rotation of the head, abutting and twisting the respective leg parts, and binding the reinforcing bar and the reinforcing bar Method. 3. A binding device using the reinforcing bar binding member according to claim 1, wherein the binding device has a double structure of an inner cylinder and an outer cylinder movably provided in an axial direction of the inner cylinder. A slit-shaped holding portion that holds the leg portion of the reinforcing bar binding member is formed in the cylinder, and a fitting portion that fits the head portion of the reinforcing bar binding member is formed in the inner cylinder. Reinforcing bar binding device.