JPH11276725A - Wire cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire cutting tool which permits operations without damaging flowers such as orchids, and which is convenient to use in gardens with no such facilities as air sources, air lines, or the like. SOLUTION: A cylinder 2 is attached to a tool main body 1 in such a way as to be rotatable about its axis, and blade parts are exposed from an opening in the end of the cylinder 2 to pivotally attach a pair of swing members 3, 3 in the form of X to the cylinder 2. A piston member 4 which reciprocates inside the tube 2 is provided, the end face 4a thereof being formed into a conical recessed surface. A reciprocation drive means E is provided inside the tool main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wire cutting tool.

[0002]

2. Description of the Related Art Conventionally, pliers, nippers, and the like have been widely used as tools for cutting metal wires (wires). In recent years, an air-driven wire cutting tool has been used which is suitable for cutting a thick wire or the like or cutting a large number of wires. In other words, this air-driven wire cutting tool sends air from an external compressor into the closed cylindrical tool body, and can swing from the tip of the tool body to the outside using the air pressure. The pair of blades provided are configured to swing open and close.

[0003]

However, for example, in orchid cultivation fields, greenhouses and horticultural gardens,
(Conventional) Air-driven wire cutting tool when arranging wires like splints or adjusting the length of already placed wires according to the growth of orchids or flowers growing Then, an air source such as a compressor and an air pipe were required, and they could not be used where they were not. In addition, there is a possibility that the cut end portion of the above-mentioned wire rod of the splint spatters at the time of cutting and damages flowers such as orchids. In addition, since the direction of the blade could not be changed with respect to the tool body, the operator had to forcibly return the wrist to grip the tool body so that the blade could be aligned with the direction of the wire and cut. It was difficult.

Accordingly, an object of the present invention is to provide a wire cutting tool which can work without damaging the flowers of orchids or the like and which is convenient in a garden or the like having no facilities such as an air source.

[0005]

In order to achieve the above-mentioned object, a wire cutting tool according to the present invention comprises a tool body, a cylindrical member protruding from the tool body, and an inner edge at a tip end. A pair of swing members having a blade portion, and a pivot shaft for pivotally attaching the pair of swing members to the cylinder in an X-shape with the blade portion being externally exposed from the distal end opening of the cylinder. A resilient member that resiliently urges the pair of blades in a direction to open the pair of blades, a piston member that reciprocates inside the cylindrical body and slides on base ends of the pair of swing members, and the tool body. A reciprocating drive means provided in the tool body, further comprising: attaching the cylindrical body to the tool main body so as to be rotatable around its axis; and forming the distal end surface of the piston member into a conical concave shape, The pair of blades are opened and closed by sliding the base ends of the pair of rocking members on the distal end surface by reciprocating the members. It is obtained by configured to swing direction.

Further, a holding member for holding one of the wires cut by the blade portions of the pair of swinging members is provided slightly closer to the outer edge than the cutting edge of the blade portion. Further, a reciprocating drive means, a rod member attached to the base end surface of the piston member, a motor that is rotationally driven by electric power from a battery,
And a cam that rotates by the rotation of the motor and presses the rod member toward the distal end.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIG. 1 to FIG. 3 show an embodiment of a wire cutting tool according to the present invention.
A pair of rocking members 3 and 3 having a blade 10 at the inner edge of a tip 3a;
A pivot shaft 11 for pivotally connecting the pair of rocking members 3 to the cylinder 2 in an X-shape; and a base for the pair of rocking members 3 to reciprocate inside the cylinder 2. A piston member 4 slidably in contact with the ends 3b, 3b, a reciprocating drive means E provided in the tool body 1,
It has.

More specifically, the tool body 1 has upper and lower sides 5, 6 and front and rear sides 7, 8, and a rear side 8 is a pistol-shaped handle 8a. In addition, a connection holding member 18 having a male screw portion 16 on the outer peripheral surface of the front end and a hole portion 17 at the axis is provided above the front side portion 7.
Note that B is a detachable battery, which can be removed and charged.

The cylindrical body 2 includes a cylindrical portion 9, a pair of mounting pieces 12, 12 protruding from the distal end surface of the cylindrical portion 9, and an outer flange portion 13 provided at a base end of the cylindrical portion 9. And a space between the pair of mounting pieces 12, 12 is an opening at the distal end.

The cap nut member 19 through which the cylinder 2 is inserted
Is screwed into the male screw portion 16 of the connecting and holding member 18, so that the outer flange portion 13 of the cylindrical body 2 is located between the inner holding portion 19 a of the cap nut member 19 and the connecting and holding member 18. , The cylindrical body 2 is held by the tool body 1 so as to be rotatable around its axis. That is, in FIG. 1 and FIG.
Are open and closed in the vertical direction, but the blades 10 can be freely changed to open and close horizontally or obliquely by rotating the cylindrical body 2.

The pair of rocking members 3, 3 have their blade portions 10, 10
The base end is attached to a pair of mounting pieces 12 of the cylindrical body 2 by a pivot shaft 11 so that the blades 10 are exposed to the outside from the opening at the distal end, and the base ends 3b and 3b are It is inserted into the cylindrical portion 9.

A resilient member is provided between the pair of swing members 3 and 3 and on the base end side of the pivot 11 to resiliently urge the pair of blade portions 10 and 10 in the opening direction. 14 (for example, a coil spring), and the cutting edges 10a, 10a,
Slightly closer to the outer edge than 10a, clamping members 15, 15 are provided. The details of the holding members 15, 15 will be described later.

The distal end surface 4a of the piston member 4 is formed in a conical concave shape, and the reciprocating movement of the piston member 4 causes the proximal end portions 3b, 3 of the pair of swing members 3, 3 to be attached to the distal end surface 4a.
The pair of blades 10 and 10 are configured to swing in the opening and closing direction by swinging and swinging b.

The reciprocating drive means E includes a rod member 21 attached to the base end surface 4b of the piston member 4, a motor M driven to rotate by electric power from the battery B, and a rod member 21 which rotates by the rotation of the motor M and rotates. And a cam 22 for pressing the cam 22 toward the distal end.

The rod member 21 is inserted through the hole 17 of the connection holding member 18 (described above) provided on the tool body 1 and has an outer flange 23 at the base end. The rod member 21 is elastically urged toward the base end by an elastic member 24 (coil spring) provided between the outer flange 23 and the connection holding member 18.

A main switch 26 is provided between the motor M and the battery B. The main switch 26 is formed in a trigger type of a pistol provided above the handle 8a of the tool body 1. I have. The motor M and the cam 22 are connected to a rotational power transmission member 25 such as a reduction gear or a shaft.
When the main switch 26 is turned on, the rotational force of the motor M is transmitted to the cam 22, and the cam 22 rotates to press the rod member 21 and the piston member 4 toward the distal end.

When the piston member 4 advances to the distal end side, as shown in FIGS. 4 and 5, the conical concave distal end surface 4a of the piston member 4 is moved to the proximal end portions of the pair of swing members 3, 3. 3b, 3b, and the base end portions 3b, 3b slid in contact with the distal end surface 4a in a direction (arrow A direction), whereby the pair of blades 10, 10 are closed. The wire 27 is cut.

At this time, as shown in FIG. 6 and FIG.
When the wire is cut between the blade portions 10, 10, one of the cut wires 27 is held by the holding members 15, 15 (described above). That is, the cut wire 27 is prevented from falling and becoming dust. The holding member 15 is formed of a relatively hard elastic body.

By the way, as shown in FIG.
When the rotating member is further rotated from the rotated state, as shown in FIG. 3, the rod member 21 and the piston member 4 are retracted to the proximal side by the pressing of the resilient member 24, and the pair of swing members 3, 3 The blades 10, 10 are opened by swinging by the pressing of 14. In addition, the front end surface 4a of the piston member 4 is formed of a low friction member, or grease is applied to the front end surface 4a, so that the sliding members 3 and 3 slide smoothly.

As shown in FIGS. 3 to 5, in the wire cutting tool of the present invention, the main switch 26 for driving the reciprocating drive means E is turned on (the main switch 26 of the trigger type described in FIG. 1 is turned on). When the blades 10 reach the open / close limit position, the drive of the reciprocating drive means E is automatically stopped.

That is, for example, a limit switch 28 described later is provided. The limit switch 28 includes a first conductive portion 29 that rotates while being connected to the rotary power transmission member 25 (shaft), and a second conductive portion 30 that contacts and separates from the rotating first conductive portion 29. The first conductive portion 29 is electrically connected to one of the connection terminals of the motor M, and the second conductive portion 30 is electrically connected to one of the connection terminals of the battery B. The first conductive unit 29 may be connected to the battery B, and the second conductive unit 30 may be connected to the motor M.

The second conductive portion 30 has a substantially C-shape in plan view, and the rotation center of the first conductive portion 29 is disposed at the center of the inner diameter. The non-contact portions 31, 31 that do not contact the rotating first conductive portion 29 are provided at the 180 ° facing position of the second conductive portion 30. When the first and second conductive portions 29 and 30 are in a non-contact state {when the first conductive portion 29 is stopped at the non-contact portion 31}, the rod member 21 is moved to the most proximal side. The direction of the cam 22 is set such that the cam 22 is retracted or the rod member 21 is advanced to the most distal end side.

With such a configuration, the first
Limit switch in which the second conductive parts 29 and 30 are in a non-contact state
When the main switch 26 is turned on when 28 is OFF, the motor M rotates as shown in FIG.
The first conductive part 29 rotates while contacting the second conductive part 30 via the.

When the first and second conductive portions 29 and 30 are in the contact state and the limit switch 28 is ON, the motor M continues to rotate even if the main switch 26 is turned OFF (as indicated by the phantom line). As shown in FIG. 5, when the first conductive portion 29 rotates by 180 ° and reaches the non-contact portion 31 of the second conductive portion 30, the limit switch 28 is turned off and the motor M stops automatically. That is, the cam 22 rotates by 180 °, the piston member 4 retreats or advances, and the blade portions 10, 10 of the pair of swing members 3, 3 are opened or closed.

When the main switch 26 is turned on again, as shown in FIG. 4, the motor M rotates and the first conduction portion 29 (shown by a virtual line) of the limit switch 28 comes into contact with the second conduction portion 30. And rotate. Even if the main switch 26 is turned off immediately after the rotation of the motor M, the first conduction unit
29 continues to rotate, the first conduction part 29 rotates 360 °
When the motor M reaches the non-contact portion 31 of the conductive portion 30, the motor M automatically stops, and the blade portions 10, 10 are closed or opened.

When the main switch 26 is kept on, the electric circuit is configured so that the motor M automatically stops when the blades 10, 10 reach the open / close limit position and the torque of the motor M increases. ing.

The present invention is not limited to the above-described embodiment. For example, the elastic member 24 for urging the rod member 21 toward the base end may be omitted. That is, when the base ends 3b, 3b are swung in the opening direction by the resilient member 14 which resiliently urges the base ends 3b, 3b of the swing members 3, 3 in the opening direction, the (conical concave surface) of the piston member 4 The distal end face 4a has a proximal end 3
b and 3b are slidably pressed and naturally retreat.

As shown in FIG. 1, a push switch 32 is provided on the rear surface of the handle 8a so that the main switch 26 is not turned on even if the main switch 26 is pulled unless the push switch 32 is pressed while holding the handle 8a. You can also take safety measures.

[0030]

Since the present invention is configured as described above, the following effects can be obtained.

By rotating the cylindrical body 2 around the axis with respect to the tool body 1 (according to claim 1), the directions of the pair of blades 10, 10 can be freely changed, and
The blades 10, 10 can be opened and closed. That is, even if the wire 27 is oriented vertically, horizontally, or diagonally,
What is necessary is just to change the direction of the blade parts 10 and 10 so that the
The cutting operation can be easily performed without forcibly turning the wrist holding the tool body 1.

According to the second aspect of the present invention, the cut wire 27 is clamped by the clamping members 15 and 15, so that the tip of the wire 27 does not scatter and damage a flower of high commercial value such as orchid. Further, the wire 27 does not fall and become garbage.

(According to claim 3) No external air source such as a compressor or equipment such as an air pipe is required, and the present invention can be used in a horticultural garden without such equipment. Further, since an air hose, an electric cord, or the like is not connected, it is suitable for work while moving.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a wire cutting tool according to the present invention.

FIG. 2 is a front view.

FIG. 3 is a configuration explanatory view showing a reciprocating drive unit.

FIG. 4 is an explanatory diagram showing a driving state of a reciprocating driving unit.

FIG. 5 is an explanatory view showing a reciprocating drive unit in a state where a blade is closed.

FIG. 6 is an explanatory view showing a wire before cutting.

FIG. 7 is an explanatory view showing a wire after cutting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tool main body 2 Cylindrical body 3 Oscillating member 3a Tip 3b Base end 4 Piston member 4a Tip surface 4b Base end surface 10 Blade portion 10a Cutting edge 11 Pivot shaft 14 Resilient member 15 Clamping member 21 Rod member 22 Cam 27 Wire rod E Reciprocating Driving means B Battery M Motor

Claims (3)

[Claims] 1. A tool body 1, a cylindrical body 2 protruding from the tool body 1, a pair of swinging members 3, 3 having a blade portion 10 at an inner edge of a tip 3a, and the cylindrical body A pivot shaft 11 for pivotally connecting the pair of swing members 3, 3 to the cylindrical body 2 in an X-shape by exposing the blade portions 10, 10 to the outside from the distal end opening.
And a resilient member 14 for resiliently urging the pair of blades 10 in the opening direction, and a base end 3b of the pair of rocking members 3 reciprocating inside the cylindrical body 2. , 3b, and a reciprocating drive means E provided in the tool body 1, and further, the cylinder 2 is attached to the tool body 1 so as to be rotatable around its axis. Further, the distal end surface 4a of the piston member 4 is formed in a conical concave shape, and the piston member 4
With the reciprocating movement, the base ends 3b, 3b of the pair of swing members 3, 3 are slidably contacted with the tip end surface 4a to swing the pair of blades 10, 10 in the opening / closing direction. A wire cutting tool characterized in that: 2. The clamping members 15, 15 for clamping one of the wires 27 cut by the blade portions 10, 10 of the pair of swing members 3, 3 are slightly smaller than the cutting edges 10a, 10a of the blade portions 10, 10. 2. The wire cutting tool according to claim 1, wherein the wire cutting tool is provided near the outer edge. 3. A reciprocating drive means E includes: a rod member 21 attached to a base end face 4b of the piston member 4; a motor M driven to rotate by electric power from a battery B; The wire rod cutting tool according to claim 1 or 2, further comprising a cam (22) for pressing the rod member (21) toward the distal end.