JPH0750518Y2 - Rebar binding machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a method for reinforcing steel bars in a construction site or a civil engineering site.
The present invention relates to a reinforcing bar binding machine for binding a so-called number wire.

[Prior Art] Conventionally, in a construction site or a civil engineering site, a large number of reinforcing bars in a concrete structure are bound by a wire, which is a wire. For example, as shown in FIGS. Hacker 3
The hook portion 4 formed at the tip of the wire is hooked on the bent portion of the number wire 2, and is twisted while pulling the number wire for binding.

[Problems to be solved by the invention] However, such a reinforcing bar binding work by a hacker requires a certain amount of skill and is a heavy labor that requires force.

In addition, since the work of binding the reinforcing bars requires the work of turning the hacker while pulling by hand, there is a problem that the wrist is easily damaged.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a reinforcing bar binding machine which can perform a reinforcing bar binding operation easily and under light working conditions. It is what

[Means for Solving the Problems] A reinforcing bar binding machine for achieving the object of the present invention is a motor,
A drive unit including a power supply battery for driving the motor and a speed reducer for reducing the output of the motor, a mounting tool for mounting the drive unit on an operator, and a drive output of the drive unit Of the flexible drive shaft, a binding member made of a rod-shaped member that is rotated by transmitting the output of the flexible drive shaft, and has a hook for hooking a number wire at its tip, and the binding member is held. And a grip member having a torque adjuster for adjusting the rotation torque of the binding member, and a switch provided on the grip member drives a motor of the drive unit to drive the binding member with the flexible drive. It is characterized by rotating through an axis.

[Operation] In the reinforcing bar binding machine having the above-described configuration, for example, the driving unit can be attached to the waist of the worker with the wearing tool, the grip member can be grasped by hand, and the binding wire can be twisted and bound by hooking the binding metal on the binding wire. . At that time, since the grip member is not provided with a motor or a power supply battery, it is possible to reduce the weight of the grip member and increase the capacity of the power supply battery.
Can withstand long hours of work.

[Embodiment] The present invention will be described in detail below based on an embodiment shown in the drawings.

First, FIG. 1 shows a conventional motor-driven type rebar binding machine,
FIG. 1A is an external plan view, and FIG. 1B is a sectional view thereof.

In the figure, 10 is a cylindrical grip body in which a motor 11, a planetary speed reducer 12, a torque adjuster 13, and a power supply battery 14 for the motor 11 are housed in series as shown in the figure, and a removable rear cylinder body housing the battery 14. 15 is used as a grip portion for a worker to hold by hand, and a switch 17 is provided on a front cylinder body 16 for accommodating other parts.
Can be operated (stop, forward, reverse).

The rotation output from the motor 11 is transmitted to a planetary speed reducer 12 provided coaxially with the motor shaft and further transmitted to a torque adjuster 13, and the shaft member of each device is appropriately supported by bearings.

The torque adjuster 13, as shown in FIG.
The slip plate 18 provided at the output end of the slip plate 20 has a slip plate 20 that is pressed by the biasing force of the spring 19,
The drive shaft 21 fixed to the rotation center of is rotated, and by rotating the torque adjusting screw 22 attached to the front tubular body 16 in the forward and reverse directions, The taper portion 23 expands and contracts the spring 19 and the slip plate 18
Adjust the urging force between 20 to adjust the drive torque of the drive shaft.

That is, when a large torque is applied from the drive shaft 21 side, slip occurs between the slip plates 18 and 20, and the grip portion
The reaction force is not transmitted to the hand of the worker holding 15. Then, the adjustment can be performed by the adjusting screw 22.

At the tip of the drive shaft 21, a binding metal fitting 24 having a hook-shaped tip is detachably fixed via a fixing metal fitting 25. The binding metal fitting 24 has the same function as the hacker shown in FIG. ing.

That is, in the conventional binding work of the reinforcing bars, it is necessary to hold the hacker by hand and twist it. With the switch 17 inserted in the forward rotation side in the state of being inserted into, the binding metal fitting 24 rotates, the twisting work of the number wire is automatically performed, and when the torque exceeds a predetermined value, the torque adjuster 13 operates, It is possible to prevent a further rotating force from being transmitted to the binding metal fitting 24, a large reaction force is not transmitted to the operator, and the grip body 10 is rotated carelessly.

FIG. 3 is an external view showing an embodiment of the present invention.

In the conventional example of FIG. 1 described above, the battery is provided in the grip body 10,
The motor, the planetary speed reducer, and the torque adjuster were all housed, but in the present embodiment, only the torque adjuster is housed in the grip body 10, for example, the belt 30 wound around the waist of the worker and the battery 1
4, a drive unit 32 in which a motor 11 and a planetary speed reducer 12 are housed in a case 31 is attached, and the drive unit 32 and the grip body are attached.
The flexible drive shaft 33 is connected to the switch 10, and the switch 17 provided on the grip body 10 and the drive unit.
The wire 32 is connected to 32.

According to the present embodiment, the grip body 10 can be made thinner and lighter, the workability is further improved as compared with the above-described embodiments, and the battery can be stored in the drive unit 32. The capacity can be increased and it can withstand long hours of work.

[Effects of the Invention] As described above, according to the present invention, the work of binding the reinforcing bars can be performed by a simple operation of hooking the binding metal on the wire, and the wrist is twisted by rotating the wrist as in the conventional case. No work is required, and workers can be released from heavy labor.

In addition, since the drive unit can be attached to the waist of an operator by the mounting tool, the grip member can be made lighter and smaller, the workability can be further improved, and the battery can have a large capacity, which can be used for a long time. Can withstand work.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a conventional motor-driven rebar binding machine, FIG. 1 (a) is an external view, and FIG. 1 (b) is a cross-sectional view thereof. FIG. 2 shows a schematic view of the torque regulator shown in FIG. FIG. 3 is a schematic view showing an embodiment of the present invention. FIGS. 4 (a) and 4 (b) are diagrams for explaining conventional rebar binding work by manual work. 10: Grip body, 12: Motor 3: Planetary reducer, 14: Power battery 15: Rear cylinder, 16: Front cylinder 17: Switch, 18: Slip plate 19: Spring, 20: Slip plate 21: Drive shaft , 22: Adjustment screw 23: Tapered part, 24: Bundling bracket 25: Fixing bracket, 30: Belt 31: Case, 32: Drive unit 33: Flexible drive shaft 34: Electric wire.

Claims (1)

[Scope of utility model registration request] 1. A drive unit including a motor, a power supply battery for driving the motor, and a speed reducer for reducing the output of the motor, a mounting tool for mounting the drive unit on an operator, and the drive unit. And a flexible drive shaft for transmitting the drive output of the flexible drive shaft, and a rod-shaped member that rotates by transmitting the output of the flexible drive shaft and has a hook for hooking a number wire on the tip end. And a grip member having a torque adjuster for holding the binding fitting and adjusting the rotation torque of the binding fitting, and driving the motor of the drive unit by a switch provided on the grip member to bind the binding fitting. A reinforcing bar binding machine characterized in that a metal fitting is rotated via the flexible drive shaft.