JP2001164700A - Reinforcement binder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement binder allowing unskilled workers to efficiently and positively bind reinforcements in a short time when assembling the reinforcements in reinforced concrete work. SOLUTION: A first gripping portion 2 has first opposed sides 2b, 2c bent at both edges of a first base 2a. The first opposed sides 2b, 2c are bent in dog leg shape with their ends bent to the outside. A second gripping portion 3 has second opposed sides 3b, 3c bent at both edges of a second base 3a. The second opposed sides 3b, 3c are bent in dog leg shape with their ends bent to the outside. The reinforcement binder 1 is constructed by spot welding the reverse of the first base 2a to the reverse of the second base 3a so that the first gripping portion 2 is perpendicular to the second gripping portion 3.

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 device for binding a plurality of reinforcing bars embedded in concrete to form a reinforced concrete structure.

[0002]

2. Description of the Related Art Reinforced concrete structures using reinforcing bars are used, for example, in the construction of middle-rise and high-rise buildings and in the foundation of detached houses. In recent years, reinforcing bars have been used in most concrete structures to improve the seismic strength and the like of the concrete structures. In a reinforced concrete construction for building or constructing a reinforced concrete structure, a reinforcing bar is assembled before pouring concrete. The worker engaged in assembling the rebar is shown in FIG.
8B, a wire-shaped binding wire 13 is wound around a crossing portion where the reinforcing bars 11 intersect or a joint portion of the reinforcing bar 12 as shown in FIG. The binding wires 13 are twisted to tighten the reinforcing bars 11 or the reinforcing bars 12.

[0003]

However, when the binding wire 13 is used to tie the intersection of the reinforcing bars 11 and the joint portion of the reinforcing bar 12 with the binding wires 13 as described above, the worker is required to bind the binding wires 1 to each other.
3 and sufficient skill in handling the binding device are required. Unless a skilled person, it is difficult to bind the reinforcing bars to be tied due to displacement, and furthermore, in general, in the rebar construction of a building or the like, the intersection of the reinforcing bars 11 and the reinforcing bars 1 are not required.
There are many joint portions 2 and it is time-consuming for even a skilled person to tighten the reinforcing wires by twisting the binding wires 13 using a binding device, and it is difficult to increase the efficiency. For this reason, there is a problem that the construction cost increases.

SUMMARY OF THE INVENTION An object of the present invention is to assemble reinforcing steel in a reinforced concrete construction without using a binding wire to bind the reinforcing steel, so that even an unskilled worker can easily and efficiently tie the tie without time. It is another object of the present invention to provide a reinforcing bar tie which can reduce construction costs.

[0005]

The object of the present invention is to provide a first base having a flat plate shape having substantially parallel opposite side edges, and first opposite side portions standing upright from the both side edges and facing each other.
A first gripping portion for gripping a first reinforcing bar between a base surface and the first side portion; and a second flat plate having substantially parallel side edges.
A base, and a second opposing and erected from each of the side edges.
A second grip portion for gripping a second reinforcing bar between the second base surface and the second side portion; and a first base back surface and a second base back surface fixed to each other. This is achieved by a reinforcing-bar tying tool comprising fixing means.

In the rebar tying tool according to the present invention, at least one of the first and second side portions is formed by a front end portion bent outward, and the both side edges and the front end portion. And a wall having a shape that bulges outward. Further, in the reinforcing bar tie of the present invention, at least one of the first and second side portions is provided with a slip preventing means for preventing slipping with the holding reinforcing bar. Features. For example, the anti-slip means has a protrusion protruding on a side of the wall facing the rebar.

Further, in the reinforcing bar tie of the present invention, the first gripping portion and the second gripping portion are fixed so as to grip the first and second rebars substantially orthogonally. It is characterized by. Alternatively, the first gripping portion and the second gripping portion are fixed so as to grip the first and second reinforcing bars in parallel.

Further, in the above-described reinforcing bar tie of the present invention, at least one of the first base and the second base has a length of the both side edges approximately equal to a diameter of the rebar to be gripped.
It is characterized by being five times or more.

[0009] The object of the present invention is to provide a binding device for a reinforcing bar according to the present invention, wherein the first base and the second base are formed of the same flat plate member instead of using the fixing means. Achieved by the tool.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A reinforcing bar tie according to a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing a schematic configuration of a reinforcing bar tie according to the present embodiment. The reinforcing bar binding device 1 is made of a metal material (or a synthetic resin material or a combination thereof) having a certain elastic range, and has a first gripping portion 2 and a second gripping portion 3 fixed orthogonally. are doing.

The first gripping portion 2 has a plate-shaped first base portion 2a having substantially parallel both side edges, and a generally rectangular metal plate bent at both side edges of the first base portion 2a from both side edges. First side portions 2b and 2c are provided to be erected and opposed to each other. The first side portions 2b and 2c each have a front end portion bent outward and a "ku" -shaped wall bulging outward between both side edges and the front end portion of the first base portion 2a. have. In addition, a protrusion protruding on a side facing the rebar is provided on a wall surface of one side portion 2c of the first side portions 2b, 2c as slip prevention means for preventing slippage with a rebar (not shown) to be gripped. 2d is formed. In the first grip portion 2, the diameter is 13 m between the surface of the first base portion 2a and the first side portions 2b, 2c.
m first rebar (not shown) can be gripped.

The second gripping portion 3 has a plate-shaped second base 3a having substantially parallel side edges, and a generally rectangular metal plate bent from both sides of the second base 3a. It has the second side portions 3b and 3c which are erected and opposed to each other. The second side portions 3b and 3c have a front end portion bent outward and a "ku" -shaped wall bulging outward between both side edges and the front end portion of the second base portion 3a. have. In addition, a protrusion protruding on a side facing the reinforcing bar is provided on a wall surface of one side portion 3c of the second side portions 3b, 3c as slip preventing means for preventing slipping with a reinforcing bar (not shown) to be gripped. 3d (not shown) is formed. Second gripper 3
Thus, a second reinforcing bar (not shown) having a diameter of 10 mm can be gripped between the surface of the second base 3a and the second side portions 3b, 3c.

The back surface of the first base portion 2a and the back surface of the second base portion 3a are substantially opposed to each other so that the first holding portion 2 and the second holding portion 3 are orthogonal to each other. And the first gripping portion 2 and the second gripping portion 3 are fixed to form the reinforcing bar binding device 1.

Next, the reinforcing bar binding device 1 will be described in more detail with reference to FIG. FIG. 2 shows a state in which the reinforcing bar tie 1 is viewed along both side edges of the first base portion 2a of the first grip portion 2 from the protrusion 3d side.

As shown in FIG. 2, the first side portions 2b and 2c of the first gripping portion 2 have an inner width, ie, a maximum inner width W1, of a bent portion in the shape of a "U" extending outward. 1 has a length slightly shorter than the rebar (diameter: 13 mm),
The width W2 inside the distal ends of the first side portions 2b and 2c is formed to be slightly smaller than the maximum inner width W1. Second gripper 3
Also, like the first gripper 2, the second reinforcing bar (diameter: 10 m
m), the maximum inner width W1 and the width W2 inside the distal end portion are defined. Accordingly, when the operator presses the distal ends of the first side portions 2b, 2c of the reinforcing bar tie 1 against the first reinforcing bar, the first side portions 2b, 2c are elastically deformed.
The first reinforcing bar can be sandwiched and held by elastic force. While holding the first rebar with the first gripper 2, the second rebar is pressed against the distal ends of the second side portions 3 b, 3 c of the second gripper 3, and the second side portions 3 b, 3 c Is elastically deformed, and can be gripped by elastic force with the second rebar sandwiched therebetween.

As shown in FIG. 2, the length L of both side edges of the second base portion 3a of the second grip portion 3 (hereinafter referred to as "side edge length L").
Is preferably about 1.5 times or more the diameter of the rebar to be gripped. In the present embodiment, the diameter of the second reinforcing bar is 10 mm, and the side edge length L of the second grip portion 3 is L.
Is about 25 mm to 30 mm. On the other hand, the diameter of the first reinforcing bar is 13 mm, and the side edge length L of the first gripper 2 is L.
Is about 25 mm to 27 mm. The optimum side edge length L varies depending on the material for forming the first gripping portion 2 and the second gripping portion 3 and the elastic modulus thereof. However, in order to securely bind the rebar, it is independent of the forming material and the like. It is preferable to set the side edge length L to a length of at least about 1.5 times the diameter of the reinforcing bars to be bound. On the other hand, considering the size and weight of the reinforcing bar tie 1 from the viewpoint of the workability and the portability of the reinforcing bar tie, the side edge length L is within three times the diameter of the reinforcing bar to be tied. desirable.

Next, the operation of the orthogonal reinforcing bar binding device 1 according to the present embodiment will be described with reference to FIG. FIG. 3 is a perspective view showing an operation of binding two rebars by the rebar tie 1 according to the present embodiment. In the present embodiment, deformed steel bars are used as reinforcing bars to be tied. The second reinforcing bar 16 is arranged substantially in parallel at substantially predetermined intervals.
When the second side portions 3b, 3c of the second grip portion 3 of the reinforcing bar binding device 1 are pressed against the predetermined position, the second side portions 3b, 3c of the second grip portion 3 are spread by elastic deformation, and To the reinforcing bar 16. As a result, the second side portions 3b and 3c of the second gripping portion 3 of the reinforcing bar tie 1 grip the second reinforcing bar 16 with elastic force, and the reinforcing bar tie 1 is positioned at a predetermined position of the second reinforcing bar 16. Is grasped.

Next, when the first reinforcing bar 15 is pressed against the first side portions 2b and 2c of the first holding portion 2 of the reinforcing bar binder 1 held by the second reinforcing bar 16, the first holding portion is pressed. The two first side portions 2b, 2c are spread by elastic deformation and fitted into the first reinforcing bar 15. As a result, the first side portions 2b and 2c of the first grip portion 2 of the reinforcing bar binding device 1 grip the first reinforcing bar 15 with elastic force, and the first and second reinforcing bars 15 and
16 are tied at right angles through the reinforcing bar tie 1.

According to the above-described embodiment, the length L of the side edge of the side portion of the reinforcing bar tie 1 is set to be approximately 1.5 to 3 times the diameter of the reinforcing bar to be tied. Thereby, it is possible to prevent the reinforcing bar gripped by the reinforcing bar binding device 1 from swinging in a direction orthogonal to the axial direction, for example, in the horizontal direction. Also,
The protrusion 2d of the first side portion 2c and the second
Since the projections 3d of the side portions 3c are respectively locked to the ribs and the nodes of the first and second reinforcing bars 15, 16 which are deformed steel bars, it is possible to suppress the mutual movement of the reinforcing bars in the axial direction. can do.

Next, a reinforcing bar tie 1 according to a second embodiment of the present invention will be described with reference to FIGS.
FIG. 4 is a perspective view showing a schematic configuration of the reinforcing bar tie according to the present embodiment. In the first embodiment, the reinforcing bar tie 1 is configured such that the first grip 2 and the second grip 3 are integrally formed so as to be orthogonal to each other. As shown in FIG. 4, the first grip 2 and the second grip 3
Are parallel and integrally formed. That is, in the first embodiment, the first
The first gripping part 2 and the second gripping part 3 are parallel to each other.
The center of the back surface of the base 2a and the center of the back surface of the second base 3a are opposed to each other, and the center portion is subjected to spot welding as fixing means, so that the first holding portion 2 and the second holding portion 3 are fixed. A reinforcing-bar tying tool 5 is configured. Although the description is omitted, the shape of each part, the side edge length L, and the like in the present embodiment are the same as those described in the first embodiment with reference to FIG.

Next, the reinforcing bar binding device 5 according to the present embodiment.
Will be described with reference to FIG. FIG. 5 is a perspective view showing an operation of binding two rebars by the rebar tie 5 according to the present embodiment. Also in this embodiment, deformed steel bars are used as reinforcing bars to be tied.

The operator pushes the second side portions 3b, 3c of the second gripping portion 3 of the reinforcing bar tie 5 at a predetermined position of the second reinforcing bar 16 arranged substantially in parallel at substantially predetermined intervals. Apply to it. As a result, the reinforcing bar binding device 5 is
, And the reinforcing-bar tying tool 5 is held at a predetermined position of the second reinforcing bar 16. Next, the first grip portion 2 of the reinforcing bar binding device 5
Are pushed into the first reinforcing bar 15. In this way, the first reinforcing bar 15 and the second reinforcing bar 16 are tightened by the reinforcing-bar tying tool 5 in a parallel state.

As described above, according to the present embodiment, in addition to the effects obtained in the first embodiment, also in a lap joint in which a part of a plurality of reinforcing bars are overlapped and connected to each other,
By using the reinforcing bar binding device 5, even an unskilled worker can easily and surely tie in a short time.

In the first and second embodiments described above, the first gripping portion 2 and the second gripping portion 3 of the reinforcing bar binders 1 and 5 grip the rebar of deformed steel bars having different diameters. Alternatively, the first gripper 2 and the second gripper 3 may grip a rebar having the same diameter.

Next, a reinforcing bar tie according to a third embodiment of the present invention will be described with reference to FIGS. In the above-described first and second embodiments, the reinforcing bar ties 1, 5
Is formed by forming the first grip 2 and the second grip 3 from separate metal plates and fixing the first base 2a and the second base 3a by spot welding or the like. Instead of using it, the first base 2a and the second base 3a may be formed of the same flat plate-like member. That is, it is also possible to form the reinforcing bar binding device 6 from one metal plate.

FIG. 6 is a perspective view showing a schematic configuration of the reinforcing bar tie 6 according to the present embodiment. As shown in FIG. 6, one metal plate is bent by pressing or the like at the opposite side edges of the base portion 6a so that the first side portions 6b and 6c are opposed to each other, and the first side portion is expanded so that the inside thereof expands. Both sides 6
The side surfaces of b and 6c are bent in the shape of "", and further bent so that the front ends thereof are slightly outward. Similarly, the metal plate is bent at the other side edge of the base portion 6a by pressing or the like, and second side portions 6d and 6e are formed on the opposite side to the first side portions 6b and 6c. (2) Fold the sides of both sides 6d and 6e in the shape of "C",
Bend the tip so that it faces slightly outward. According to this configuration, similarly to the first embodiment, the first and second rebars can be crossed and tightened.

FIG. 7 is a perspective view showing an operation of binding two rebars by the rebar tying member 6 according to the present embodiment. As shown in FIG. 7, the reinforcing bar binding device 6 according to the present embodiment.
Is that the side edge length L is shorter than the side edge length L of the reinforcing bar tie 1 of the first embodiment, and the optimum "side edge length L ≧ diameter of the reinforcing bar described with reference to FIG. 1.5 times as long as "." Therefore, for example, the diameter of the reinforcing bar to be gripped is 10 m.
m, the side edge length L of the reinforcing bar tie 6 is 10 to 13 m
m, which causes a problem that the rebar grasped by the rebar tying tool 6 easily swings in a direction perpendicular to the axial direction, for example, in the horizontal direction. However, the reinforcing bar binding device 6 has an advantage that it can be manufactured at low cost because it is small in size and does not need to use fixing means such as spot welding.
Therefore, it is suitable for use in, for example, binding of reinforcing bars in small reinforced concrete structures and the like.

The use of the reinforcing bar binding devices 1, 5, and 6 according to the first to third embodiments does not cause the binding wire to be loosened unlike the case where the reinforcing bar is bound using a conventional binding wire. Thus, even an unskilled worker can easily and surely tie the rebar in a short time. In addition, the binding device 1 for reinforcing bars,
5 and 6 also have an economical advantage because they can be handled with bare hands (including wearing gloves) without special tools such as those used in conventional binding wires.

The present invention is not limited to the above embodiment, but can be variously modified. For example, in the reinforcing bar tie 1 according to the first embodiment, two orthogonal first and second reinforcing bars 15 and 16 are tightened, and in the reinforcing bar tie 5 according to the second embodiment, Parallel first and second reinforcing bars 15, 1
6 are tied as an example, all of which tie the reinforcing bars in a plane. The present invention is not limited to this. For example, the present invention can be applied to a case where three rebars cross each other orthogonally in three dimensions. The third gripper orthogonal to both the first gripper 2 and the second gripper 3 described in the first embodiment is replaced with the first gripper 2 and the second gripper 3.
Formed in the same manner as above, and these are combined. That is, the base of the third gripping portion is first or second side portion 2b of the first or second gripping portion 2, 3 so that the third gripping portion is orthogonal to the first and second gripping portions 2, 3. , 2c, 3b, 3c, or the like, by spot welding or the like, it is possible to form a reinforcing-bar tying tool for binding three reinforcing bars orthogonal to each other in three dimensions.

In the first to third embodiments, as a material for forming the reinforcing bar binders 1, 5, and 6, a metal plate having a predetermined elastic coefficient, for example, a stainless steel containing Cr and Ni ( SUS301, SUS301), C
Stainless steel containing r, Ni and Al (SUS631)
Etc. can be used.

Further, in the above embodiment, both sides of the reinforcing bar tie are bent in the shape of a square, but may be curved in an arc instead. Further, instead of bending the tip portions on both sides of the reinforcing bar tie, the tip portions may be formed so as to be rounded. Furthermore, the reinforcing bar tie is made of a metal plate, but instead of this,
The synthetic resin molding material may be put into a mold and molded.

In the above-described embodiment, spot welding is used as a fixing means for fixing the first gripping portion 2 and the second gripping portion. However, the present invention is not limited to this. Can also be used. Further, in the above-described embodiment, the first side portions 2b, 2c are provided with approximately one central portion of the side portion 2c and two second side portions 3b, 3c at substantially the central portion of the side portion 3c.
Although the projections 2d and 3d are provided one by one, the present invention is not limited to this, and various modifications are possible. For example, a plurality of protrusions may be formed on the side portions 2c, 3c, or one or more protrusions may be provided on the side portions 2b, 3b. Furthermore, if the slip of the reinforcing bar does not cause a problem, the projection may not be provided.

[0033]

As described above, according to the present invention, the reinforcing bars can be tightened by gripping the reinforcing bars between both sides of the first gripping portion and between the both sides of the second gripping portion of the reinforcing bar tying tool. Therefore, even an unskilled worker can easily and efficiently bind the unit without taking time. For this reason,
Construction costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a reinforcing bar tie according to a first embodiment of the present invention.

FIG. 2 is a side view of the reinforcing bar tie according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a state in which the reinforcing bars are tightened by the reinforcing bar tying device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a reinforcing bar tie according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a state in which reinforcing bars are tightened by a reinforcing bar tie according to a second embodiment of the present invention.

FIG. 6 is a view showing a configuration of a reinforcing bar tie according to a third embodiment of the present invention.

FIG. 7 is a diagram showing a state in which reinforcing bars are tied by a reinforcing bar tie according to a third embodiment of the present invention.

FIG. 8 is a diagram showing a state in which reinforcing bars are tightened using a conventional binding wire.

[Explanation of symbols]

 1, 5, 6 Rebar tying tool 2 First grip 2a First base 2b, 2c, 6b, 6c First both sides 2d Projection 3 Second grip 3a Second base 3b, 3c, 6d, 6e Second Both sides 3d Projection 6a Base

Claims (8)

[Claims] A first base having a flat plate shape having substantially parallel side edges; and first side portions opposed to each other by being erected from the side edges, wherein the first base surface and the first side portions are provided. A first holding portion for holding the first reinforcing bar between the first and second reinforcing members; a second base having a flat plate shape having substantially parallel both side edges; A second grip portion for gripping a second reinforcing bar between the second base surface and the second side portion; and a fixing means for fixing the first base back surface and the second base back surface facing each other. A tying tool for reinforcing bars. 2. The reinforcing bar tie according to claim 1, wherein at least one of the first and second side portions is bent outward, and the both side edges and the front end are bent. A tying member for a reinforcing bar, comprising a wall having a shape bulging outwardly between the tying member and a portion. 3. The reinforcing bar tie according to claim 1, wherein at least one of said first and second side portions is provided with slip preventing means for preventing slipping of said reinforcing bar. A tying member for a reinforcing bar, characterized in that a reinforcing member is formed. 4. The reinforcing bar tie according to claim 3, wherein the anti-slip means has a protrusion protruding on a side of the wall surface facing the reinforcing bar. . 5. The reinforcing bar tie according to claim 1, wherein the first gripping portion and the second gripping portion make the first and second rebars substantially orthogonal to each other. A tying tool for reinforcing bars, which is fixed so as to be gripped. 6. The reinforcing bar tie according to claim 1, wherein the first gripping portion and the second gripping portion grip the first and second rebars in parallel. Tie for rebar, characterized in that it is fixed as follows. 7. The reinforcing bar tie according to claim 1, wherein at least one of the first base portion and the second base portion has a length of the both side edges of the reinforcing bar to be gripped. A tie for reinforcing bars, wherein the tie is approximately 1.5 times or more in diameter. 8. The reinforcing bar tie according to claim 1, wherein the first base and the second base are formed of the same flat plate member instead of using the fixing means. Utensils.