JP2003117265A - Scissors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide scissors which can be operated by a one-hand work while preventing the getting-away of an object to be cut such as a branch or a fruit stalk and can keep excellent cutting quality for a long term. SOLUTION: A circular rotary blade 4 supported so as to be rotatable is arranged in one of a pair of blades 2 and 3 and a fixed blade 5 corresponding to the rotary blade 4 is in the other blade. Thus the rotary blade is properly rotated whenever a cutting operation is performed so that excellent sharpness is kept for a long term. The object to be cut 11 does not escape by providing a hook 8 at the end of the fixed blade so that the object is surely cut.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to scissors (scissors) particularly suitable for operations such as pruning of plant trees and harvesting of fruit trees.

[0002]

2. Description of the Related Art Since conventional scissors have a substantially straight blade body, when a handle is cut for the purpose of harvesting fruits, the handle may slip toward the tip of the blade and come off the blade. Therefore, it is necessary to surely hold the fruit so that the handle does not escape, and it becomes necessary to work with both hands. This is also the case when cutting branches for pruning, the work is laborious and inefficient, and since both hands are used, the body cannot be supported by hands, and there is a danger in working at heights. There was a problem that it would be expensive.

Further, each blade is fixedly formed on the pair of blade bodies, and the blade is configured to shear an object. For this reason, the two blades are always in contact with each other at the same location, and if one location of the blade is scratched, the corresponding location of the other blade will also be affected and the sharpness will be reduced. It was easy to become.

[0004]

The present invention pays attention to these points, and provides scissors capable of holding a good workability for a long time while allowing an object to be cut such as a handle to escape, allowing one-handed work. The task was to do.

[0005]

In order to achieve the above object, the scissors of the present invention are provided with a circular rotary blade rotatably supported on one of a pair of blade bodies, and the other blade body on the other blade body. Has a fixed blade corresponding to the rotary blade. With such a configuration, each time the cutting operation is performed, the rotary blade is appropriately rotated to change the position in contact with the fixed blade, and the same position of both blades is contacted with each other to damage the blade and reduce the sharpness. There is no problem.

Further, a hook portion is formed at the tip of the blade body provided with the fixed blade toward the rotary blade. With this configuration, even if the handle, branch, or other object to be cut that is sandwiched by a pair of blades slides in the distal direction, it will not be caught by the hook and will not move further, so that it is possible to cut reliably. Become.

The blade of the fixed blade is not formed on the base side, but is formed from the middle to the tip side. With such a configuration, in the initial stage of the cutting operation, the object to be cut slides in the portion where the blade is not formed and moves in the tip direction, so that the rotary blade also rotates along with this movement, and the blade of the rotary blade for each cutting operation. Different parts will be used. Further, since cutting is not performed in the initial stage of the cutting operation, biting does not occur.

Further, the tip of the blade body provided with the hook portion has a rounded shape. As a result, even if the tip of the blade hits the fruit, the fruit is not damaged, and there is no risk of the blade hitting a finger or the like and injuring the fruit.

Further, a protrusion is formed on the base side of the fixed blade toward the rotary blade. As a result, the protrusion acts as a stopper to regulate the position of the object to be cut, so that the object to be cut enters the blade base side beyond the proper range between the rotary blade and the fixed blade and bites into it. The cutting operation can be performed normally without causing a problem.

In this specification, the term "base side" means the side closer to the fulcrum connecting the pair of blades.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. FIG. 1 is a view showing a basic configuration of scissors according to the present invention, showing a state in which a blade body is opened. In the figure, 1 is scissors, 2 and 3 are blades, 4 is a rotary blade, 5
Is a fixed blade, 6 is a caulking pin of a fulcrum that rotatably connects the pair of blade bodies 2 and 3, and 2a and 3a are grip portions of the blade bodies 2 and 3. The blades 2 and 3 can be formed by pressing a steel plate, for example, and the grip portions 2a and 3 can be formed.
Pads 2b and 3b are overlapped on the portion a to increase the thickness.

The rotary blade 4 is a disk-shaped blade and has a blade body 2
The blade 4a is rotatably supported by a pin 7, a blade 4a is formed on the entire circumference on the blade 3 side, and a protective portion 4b having a diameter slightly larger than that of the rotary blade 4 is formed at the tip portion of the blade 2. . Further, the fixed blade 5 is provided at a position corresponding to the rotary blade 4 of the blade body 3, and a blade 5a is formed on the blade body 2 side. This blade 5a
As shown in FIG. 2, from the middle of the fixed blade 5 to the tip side (see FIG.
Is formed on the left side) and the base side is a bladeless portion 5b. A tip portion of the blade body 3 is bent in a J-shape toward the rotary blade 4 to form a hook portion 8, and a protruding portion 9 is formed on the base side of the fixed blade 5 to project from the hook portion 8 and the hook portion 8. The recessed portion between the portions 9 is the fixed blade 5. A blade may be formed on the hook portion 8 so as to be continuous with the blade 5a of the fixed blade 5. A portion 9a where the protruding portion 9 rises from the fixed blade 5 has an arc shape with the caulking pin 6 as a center. Further, the tip 3c of the blade 3 is rounded so as to surround the hook portion 8 from the outside, and has a shape without a sharp portion.

In FIG. 1, reference numeral 11 denotes an object to be cut. For cutting, as shown in the figure, the object to be cut 11 is inserted between the rotary blade 4 and the fixed blade 5, and the grips 2a and 3a are gripped to form a blade body. A few
Done by closing. 3 (a) to 3 (c) show the initial, middle, and late states of the cutting operation, respectively. Since the scissors 1 cut in the range where the rotary blade 4 and the fixed blade 5 intersect, the fixed blade 5 is
Is formed in an appropriate range according to the position and radius. Further, when the object to be cut 11 is thick, the blade bodies 2 and 3 are opened greatly, but since there is the protruding portion 9, the object to be cut 11 does not go beyond the proper range and enter between the blades, The cutting operation can be performed normally without causing trouble such as biting.

As shown in FIG. 3 (a), at the beginning of the cutting operation, the object to be cut 11 sandwiched between the rotary blade 4 and the fixed blade 5 is cut.
Is on the bladeless portion 5b of the fixed blade 5, and when a cutting operation is performed, the blade slides in the tip direction as shown by the arrow, so that the portion of the rotary blade 4 which is in contact with the workpiece 11 also moves as shown by the arrow. Rotate to. Next, as shown in (b), the object to be cut 11 is caught by the hook portion 8 and when it cannot move any further, actual cutting starts, and as shown in (c), the cutting ends at the position where the pin 7 hits the fixed blade 5. To do. Pin 7 is fixed blade 5
Since the portion that hits the blade is the bladeless portion 5b, it does not damage the blade 5a, and the pin 7 hits the fixed blade 5 to exert a stopper action when the blade bodies 2 and 3 are closed. If a blade is formed on the entire fixed blade 5, cutting may be started from the beginning and biting may occur. However, if a bladeless portion 5b is provided as in this example, the cutting operation is In the initial stage, the object to be cut 11 is pushed by the rotary blade 4 and slips, so cutting does not start immediately,
No bite occurs.

As described above, since the cutting is performed while the movement of the cutting object 11 is stopped by the hook portion 8, it is not necessary to hold the cutting object 11 such as a fruit by hand, and it is possible to operate it with one hand. Can be cut reliably. In addition, even if you attach the scissors 1 to the tip of a rod to prun high trees,
The branches do not escape, so you can cut reliably. Therefore, the work becomes easy, and the work can be performed efficiently and safely. Further, since the tip 3c of the blade body 3 has a rounded shape, the tip 3c does not hit the fruit and the fruit is not damaged, and there is no possibility of being injured by a sharp blade edge. Moreover, since a protective portion 4b having a circular shape and having a diameter larger than that of the rotary blade 4 is formed at the tip of the blade body 2, the rotary blade 4 is also safe, and is particularly suitable for fruit trees, gardening, or flower arrangement. Suitable scissors for cutting branches and stems are obtained, and safety is also improved. The scissors 1 are fixed blades 5
Since a short dimension is provided in a portion close to the crimping pin 6 which serves as a fulcrum, a strong cutting force can be applied by the lever principle. Therefore, it may be used as scissors for slippery and hard metal wires.

Further, in the scissors 1, the rotary blade 4 is appropriately rotated to automatically change the position where the rotary blade 4 contacts the fixed blade 5, so that the blades are always damaged at the same location and are damaged. Since the entire blade 4a of the rotary blade 4 is used evenly without waking up and changing places, good sharpness can be maintained for a long period of time. In addition, the rotation of the rotary blade 4 is stopped and the same portion of the blade 4a is used for a certain period,
It is also possible to use another part of the blade 4a when the sharpness deteriorates. To fix the rotary blade 4 in this case, for example, a plurality of locking holes are provided in the rotary blade 4 at a certain angle, and an elastic pin having a fixing pin is provided on the outer surface of the protective portion 4b (on the back side of the drawing). This can be easily realized by a structure in which a plate is attached, the fixing pin is inserted into the through hole provided in the protection portion 4b, and is locked in the locking hole of the rotary blade 4.

In the case of the conventional scissors, as the cutting operation progresses, the angle at which the blades intersect becomes gradually smaller and becomes closer to parallel, and the intersecting position becomes far from the fulcrum of the blade body. The force is also large, and since the intersecting angle is small, biting easily occurs. On the other hand, according to the scissors 1, the angle at which the rotary blade 4 and the fixed blade 5 intersect is large, and the angle becomes rather large as the cutting operation proceeds. That is, FIG. 4A shows the initial cutting operation, and FIG. 4B shows the final cutting operation. The angle θ1 at the initial cutting operation when the rotary blade 4 intersects the fixed blade 5 is larger than that of conventional scissors. It is considerably large and has a relationship of θ1 <θ2 with the final angle θ2. This is a feature obtained by the rotary blade 4 having a circular shape. As a result, as the cutting operation progresses, the cutting force is applied to the object 11 at an angle at which the cutting is easily performed, and the object 11 is pushed down. It can be cut sharply to the end.

Since the above-mentioned scissors 1 are provided with the hook portions 8 so that the handle and the branch do not escape, the scissors 1 are suitable for the work such as harvesting fruits. However, even if the hook portion 8 is not provided, as long as it has a basic configuration in which one of the blades is a rotary blade, the advantage of using the rotary blade can be exhibited as it is. FIG. 5 exemplifies the case of scissors having no hook portion, and the tip of the blade body 3 is fixed blade 5
Is extended as it is to form a rounded tip 3c. Since the hook portion is not formed in this way, the scissors 1'can also be used for cutting a planar object such as paper.
Can be obtained. When the object to be cut is flat as described above, it is desirable to provide the blade 5a over the entire area of the fixed blade 5 without providing the bladeless portion 5b. At this time, it is necessary to prevent the pin 7 from hitting the fixed blade 5, but this can be easily solved by taking measures such as providing appropriate stoppers on the grip portions 2a and 3a.

[0019]

As is apparent from the above description, the scissors of the present invention are provided with a circular rotary blade rotatably supported on one of a pair of blade bodies and the rotary blade on the other blade body. It has a fixed blade corresponding to. Therefore, each time the cutting operation is performed, the rotary blade appropriately rotates to change the position in contact with the fixed blade, and it is possible to prevent deterioration in sharpness due to constant contact between the same positions of both blades.

Further, in the case where a hook portion is formed at the tip portion of the blade body provided with the fixed blade toward the rotary blade, an object to be cut such as a handle or a branch sandwiched by a pair of blades is directed in the tip direction. Even if it slips, it will be caught in the hook part and will not move anymore, and it will be possible to reliably cut.

Further, in the case where the blade of the fixed blade is not formed on the base side but is formed from the middle to the tip side, the object to be cut slides in the part where the blade is not formed in the tip direction in the initial stage of the cutting operation. Since the blade moves, the rotary blade automatically rotates with this movement, and a different portion of the blade of the rotary blade is used for each cutting operation, which makes it easy to maintain good sharpness for a long time. Further, since cutting is not performed in the initial stage of the cutting operation, biting does not occur.

Further, in the case where the tip of the blade provided with the hook portion has a rounded shape, even if the tip of the blade hits the fruit, the fruit is not damaged, and the blade hits a finger or the like to be injured. There is no fear.

In the case where the fixed blade is provided with a protrusion on the base side toward the rotary blade, the protrusion acts as a stopper to regulate the position of the object to be cut and rotate the object to be cut. The cutting operation can be normally performed without entering the base side of the blade body beyond the proper range between the blade and the fixed blade.

[Brief description of drawings]

FIG. 1 is a front view showing a basic configuration of scissors according to an embodiment of the present invention with a blade open.

FIG. 2 is a plan view showing a structure of a fixed blade of the scissors of the above.

FIG. 3 is an explanatory diagram of an operation during a cutting operation of the above.

FIG. 4 is an explanatory diagram showing a relationship between a rotary blade and a fixed blade during the above cutting operation.

FIG. 5 is a front view of a main part according to another embodiment.

[Explanation of symbols]

1,1 'scissors A few blades 3c tip 4 rotary blades 5 fixed blade 4a, 5a blades 8 Hook part 9 Projection 11 Cut object

Claims (5)

[Claims] 1. Scissors characterized in that one of a pair of blades is provided with a circular rotary blade rotatably supported, and the other blade is provided with a fixed blade corresponding to the rotary blade. . 2. The scissors according to claim 1, wherein a hook portion is formed at a tip end portion of a blade body provided with a fixed blade toward the rotary blade. 3. The scissors according to claim 1, wherein the blade of the fixed blade is formed from the middle to the tip side. 4. The scissors according to claim 2 or 3, wherein a tip portion of the blade body provided with the hook portion has a rounded shape. 5. The scissors according to claim 1, wherein a protrusion is formed on the base side of the fixed blade toward the rotary blade.