JP2001009751A - Wire binding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform binding work of reinforcements in a short time by simple operation by arranging a shaft-like rotary piece having a spiral groove in an outer peripheral part and installing a C-shaped hook on the tip in a cylindrical fixing piece having a cutout part for transmitting one-way rotation on an inner wall so as to freely rotate and advance/retreat. SOLUTION: A rotary piece 2 of a binding tool 1 has a shaft 4, a C-hook 5 and the like, and a male screw part 5A of the C-hook 5 threadedly engages with a female screw part 4A of the shaft 4 to stop rotation by a nut 6. A spring receiver 7 is installed in a lower part of the shaft 4 by a bolt 8. A spiral groove 4B is arranged on the outer periphery of the shaft 4, and a projecting part 14 arranged on an inner wall of a cylinder 13 is engaged with this spiral groove 4B to impart torque to the shaft 4. A fixing piece 3 connects cylinders 10, 11 by a connecting screw 15. The rotary piece 2 normally exists in a retreat position by a spring 9, and when puling the fixing piece 3 to this side by hooking the hook 5 on this side of a ring-shaped wire, the rotary piece 2 rotates to twist the wire. Reinforcements can be bound in a short time by this plural- time operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire binding tool for binding an object with a wire. More particularly, the present invention relates to a manual wire binding tool that binds a wire around a reinforcing bar or the like by pulling it with a wire binding tool.

[0002]

2. Description of the Related Art The number of rebars used in civil engineering, concrete work for construction work, etc. is enormous, and it is a simple task to bind them with wires manually, which is hard, inefficient, and high quality for workers. There are also variations, the cost is high, and there has been a strong demand for improvement.

[0003]

SUMMARY OF THE INVENTION In view of such circumstances, the present invention provides a wire which can perform inefficient bundling work of a reinforcing bar or the like by using a wire by a simple operation with a light weight and in a short time. It is an object to provide a binding tool.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a wire binding tool, wherein a rotor having a spiral groove on the outer periphery of a shaft and a C-shaped hook at the tip of the shaft transmits one rotation to the inner wall of the cylinder. A rotatable, advancing and retracting arrangement is provided in a tubular stator having a notch, and a binding operator grasps the stator with a finger and twists the wire to bind a reinforcing bar or the like. If a large torsional torque is required at the final stage of the binding, the spiral groove of the rotor is made into a multi-strand and the lead is increased so that the tensile force is not increased. When the wire is thin and the torsional torque is small, the lead of the helical groove of the rotor is reduced to increase the number of times of twist to improve the work efficiency.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, advantages such as shortening of working time and reduction of fatigue of work tying personnel are obtained by using the above-mentioned tension type wire tying tool at a site such as a reinforcing bar tying work. I was able to. Hereinafter, the present invention will be described in detail with reference to Examples.

[0006]

FIG. 1 is a front step view of a wire binding tool according to the present invention.
FIG. 2 is a cross-sectional view of a protrusion in the cylinder of the stator of the wire binding tool according to the present invention. In FIG. 1, a rotor 2 is a cylindrical stator 3.
Rotatably arranged inside the cylinder. Rotor 2 is shaft 4,
It comprises a C hook 5, a nut 6, a spring receiver 7, and a bolt 8. Male thread 5A of C hook 5 is female thread 4 of shaft 4.
A is screwed and locked with a nut 6. A spring receiver 7 is attached to a lower portion of the shaft 4 with a bolt 8. Axis 4
A spiral groove 4B is machined on the outer periphery of. This spiral groove 4
B engages with a convex portion 14 provided on the inner wall of
Is applied to the wire 16 to generate a torsional torque. The lead of the spiral groove 4B is determined by the required torsional torque. Generally, the torsional torque at the beginning of binding is small,
Since a large torsional torque is required in the final stage, the lead of the spiral groove 4B is initially small in this case, and the lead is increased in the final stage. When the torsional torque is small, the leads of the spiral groove 4B in the initial stage of binding and the final stage are the same, and when the leads are made smaller, the number of revolutions increases and the efficiency is improved.
In this case, the longer the number of spiral grooves 4B, the longer the life of the tool.

The stator 3 is composed of cylinders 10 and 11, and the cylinders 11 and 10 are connected by connecting screws 15. The rotor 2 is normally in the retracted position by the spring 9, but when rotating the wire 16, it advances while rotating. For this reason, since the end face of the spring 9 slides on the upper face of the spring receiver 7, a lubricant is applied.
In some cases, a thrust bearing may be provided between both parts.

Next, a method of using the wire binding tool 1 of the present invention will be described with reference to FIG. The wire 16 is hung on the rebars 17 and 18, and the wire is twisted by hand approximately one turn with both ends facing forward to form a loop. Next, when the C-shaped hook 5 of the wire binding tool 1 is put on the near side of the ring-shaped wire, and the stator 3 of the binding tool 1 is gripped with a finger and pulled toward the user, the rotor 2 is rotated and the wire 16 is twisted. When the rotor is pulled a plurality of times to generate the twisted nodules 16A, the rotor can be twisted only at the time of pulling without transmitting the rotation by the 10A cutout when returning, and the rebars 17 and 18 are fixed. Such simple operation makes it possible to bind the rebar in a short time. still,
There are various methods of wire application other than the above, but the description is omitted.

[0009]

According to the present invention, it is possible to easily and easily bind a reinforcing bar or the like with a tension-type wire binding tool in a short time, so that the cost can be reduced. Also, since the tool is lightweight and easy to operate, the fatigue of the worker is reduced, so it can be done by girls,
The effect is also significant in terms of securing labor. In addition, since the rebar assembling work is often performed at a high place, it can be said that the light weight of the tool and the simplification of the work are epoch-making inventions which greatly contribute to the industry in terms of safety.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a wire binding tool according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a protrusion on the inner wall of the stator cylinder of FIG. 1;

FIG. 3 is a diagram of wire binding by the wire binding tool of the present invention.

[Explanation of symbols]

 1: Wire binding tool 2: Rotor 3: Stator 4: Shaft 4A: Female thread 4B: Spiral groove 5: C-type hook 5A: Male thread 6: Nut 7: Spring receiver 8: Bolt 9: Spring 10: Tube 10A : Concave notch 11: cylinder 12: gripping part 13: convex notch 14: convex 15: connecting screw 16: wire 16 </ b> A: torsion nodule 17: rebar 18: rebar

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[Procedure amendment]

[Submission Date] September 17, 1999 (1999.9.1)
7)

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a front sectional view of a wire binding tool according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a protrusion on the inner wall of the stator cylinder of FIG. 1;

FIG. 3 is a front view of the concave and convex notch portion of the present invention.

FIG. 4 is a diagram of wire binding by the wire binding tool of the present invention.

[Description of Signs] 1: Wire binding tool 2: Rotor 3: Stator 4: Shaft 4A: Female thread part 4B: Spiral groove 5: C-type hook 5A: Male screw part 6: Nut 7: Spring receiver 8: Bolt 9: Spring 10: cylinder 10A: concave notch 11: cylinder 12: gripping part 13: convex notch 14: convex 15: connecting screw 16: wire 16A: torsion nodule 17: rebar 18: rebar

Claims (1)

[Claims] In a binding tool, a rotor having a spiral groove on an outer peripheral portion of a shaft and a C-shaped hook at a tip of the shaft has a convex portion on an inner wall of the cylinder, the convex portion engaging with the spiral groove. A wire binding tool comprising a rotor fixed to an end face and rotatable in only one direction by engagement of a rotor recess engaged with a notch projection of a cylinder by a spring force.