JPH11123016A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a epoch-making cutter capable of exhibiting a cutting property equivalent or higher than a blade of a sickle and having a length of a blade about a small-sized knife. SOLUTION: This cutter has a cutting blade part 2 at a tip part of a grip part 1 and a blade edge 3 at a side edge of the cutting blade part 2. A depressed part 4 depressed to center of the cutting blade part 2 is formed on a tip part side of the cutting blade part 2 having the blade edge 3 at the side edge and a bottom blade edge 5 is formed on at least bottom edge of the depressed part 4, and the blade edge 3 on the base end side of the cutting blade part 2 and the bottom blade edge 5 of the depressed part 4 are provided in a parallel state of the length direction of the cutting blade part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool for cutting branches, leaves and stems.

[0002]

2. Description of the Related Art A cutting tool of this type is, for example, a scythe. Since the sickle cuts a hard leaf stem such as a weed by sliding it against the blade edge, the blade plate (length) is formed long so that a sufficient cutting force can be obtained.

[0003] However, such a cutting tool having a long blade as a scythe has drawbacks in that the blade is bulky at the time of storage, easy to injure when mowing or carrying around, and not very good in appearance.

[0004] In this respect, a cutting tool such as a small knife does not have the above-mentioned drawbacks, but the cutting performance is poor due to the short blade plate, and the same cutting performance as a blade plate having a length like a sickle is exhibited. It was not something you could do.

The inventor of the present invention has conceived the idea in view of the current situation of such a cutting tool, and has developed an epoch-making technique capable of exhibiting a cutting performance equal to or greater than that of a sickle blade plate with a blade plate length of about a small knife. Complete cutting tool.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

[0007] A cutting blade plate portion 2 is provided at the tip of the grip portion 1,
A cutting tool in which a cutting edge 3 is formed on a side edge of the cutting blade plate portion 2, wherein the cutting blade plate portion 2 having the cutting edge 3 on the side edge is directed toward the center of the cutting blade plate portion 2. A recessed portion 4 is formed, and a bottom edge 5 is formed at least at a bottom edge of the recessed portion 4, and a blade edge 3 on the base end side of the cutting blade plate portion 2 and a bottom of the recessed portion 4 are formed. The cutting tool according to the present invention is characterized in that the blade edge 5 and the cutting blade plate portion 2 are provided side by side in the longitudinal direction.

Further, a blade edge 3 on the base end side of the cutting blade plate portion 2
And between the bottom edge 5 of the concave portion 4 and the bottom edge 5 of the concave portion 4 at the center of the cutting blade plate portion 2 from the edge 3 on the base end side of the cutting blade plate portion 2. The cutting tool according to claim 1, wherein a guiding edge (6) is formed.

Further, the concave portion 4 is formed slightly proximal to the distal end of the cutting blade plate portion 2, and the scraping claw portion 7 is formed by the concave portion 4 and the distal end of the cutting blade plate portion 2. The cutting tool according to any one of claims 1 and 2, wherein

When the main body A formed of the cutting blade plate portion 2 and the grip portion 1 is grounded with the blade edge 3 facing downward and the main body A is grounded, the cutting blade plate portion 2 The cutting edge plate 3 is formed in a bent shape such that the blade edge 3 of the cutting blade plate portion 2 cannot come into contact with the ground even if the front end portion of the cutting blade 1 and the grip portion 1 touch the ground. Or the cutting tool according to item 1.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

For example, when used for mowing,
The blade edge 3 is applied to the root of the grass 10, and the cutting blade 2 is pulled toward the front side with the grip portion 1 to cut the grass 10.

At this time, the soft grass 10 is cut by the cutting edge 3, but the hard grass 10 is cut in the middle of the stem as shown by the imaginary line in FIG. 1 even if it is not completely cut. The cutting edge plate 3 slides to the tip end side and drops into and engages with the concave portion 4 at the tip end side of the cutting blade plate portion 2, and is cut by the bottom edge 5 in this locked state.

Therefore, a two-stage cutting resistance can be given to the object to be cut by the cutting resistance of the blade edge 3 and the cutting resistance of the bottom blade edge 5 in the locked state, thereby providing extremely excellent cutting performance. An object to be cut such as a hard grass 10 or a leaf stem 8 which is exerted can be reliably cut by the bottom blade edge 5 in a state where the cut object is locked in the recessed portion 4.

Therefore, if the blade edge structure that provides the two-stage cutting resistance is adopted, a sufficient cutting force can be obtained by exerting the above-mentioned effects without using a configuration having a long blade edge like a sickle. The blade edge 3 can be shortened, and the cutting blade plate portion 2 can be reduced in size.

When cutting the grass 10 with a sickle, if the pulling force is weak, the hard grass 10 may slip along the blade edge and cannot be cut. Although it was often the case that the moving trajectory of the blade plate could not be read and the injury was caused, the cutting tool of the present invention can reliably cut even the hard grass 10, so the cutting blade plate portion It is easy to read the trajectory of No. 2 and therefore the risk of injury is small and the safety is excellent.

Further, when the leaf stem 8 is cut down by swinging down like a hatchet, the same function and effect as described above can be obtained, and the hard leaf stem 8 can also be cut reliably.

It is also possible to use the blade like a small knife. For example, as shown in FIG. 4, the leaf stem 8 is held between the blade edge 3 and the thumb, and the wrist is twisted to hold the blade edge 3. If it is directed upward, the sharp edge 3 hits the cutting point 9 of the leaf stem 8, and the leaf stem 8 can be cut at the cutting point 9.

According to the second aspect of the present invention, in addition to the operation and effect of the first aspect, the grass 10 and the leaf stem 8 sliding on the blade edge 3 are moved from the blade edge 3 to the center of the cutting blade plate portion 2. The guiding portion 6 is more easily guided and locked to the recessed portion 4 along the guiding edge 6 inclined toward the bottom edge 5 of the recessed portion 4, and the cutting performance is further improved.

According to the third aspect of the present invention,
In addition to the functions and effects of the invention described above, for example, when used for mowing, it is possible to cut the root of the weed 10 by scraping the ground at the base of the weed 10 with the scraper 7, which is more practical.

According to the fourth aspect of the present invention, the first aspect is provided.
In addition to the effects of the inventions of (1) to (3), even if the main body A is dropped on the ground, the blade edge 3 cannot come into contact with the ground. Become.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

In this embodiment, a cutting blade plate 2 is provided at the tip of a rod-shaped gripping portion 1, and a cutting edge 3 is provided on a side edge of the cutting blade plate 2.
Is applied to the cutting tool formed with.

The cutting blade plate portion 2 has a blade edge 3 on one side edge which is a left side edge in FIG.

Further, a concave portion 4 is formed on the tip end side of the cutting blade plate portion 2 having a blade edge 3 on one side edge, the concave portion 4 being recessed toward the center of the cutting blade plate portion 2. A bottom edge 5 is formed on the bottom edge of the cutting blade plate 2, and the cutting edge 3 on the base end side of the cutting blade plate portion 2 and the bottom blade edge 5 of the concave portion 4 are arranged in the longitudinal direction of the cutting blade plate portion 2. They are provided side by side.

More specifically, the blade edge 3 is formed by forming a linear blade edge in a predetermined range in the middle of one side edge of the cutting blade plate portion 2 as shown in FIG.

At the leading end of the cutting edge 3, an inviting edge 6 which is inclined from the cutting edge 3 toward the center of the cutting blade plate portion 2 is juxtaposed, and a recess having the bottom cutting edge 5 at the tip of the inducing edge 6. Set up part 4
Are juxtaposed.

As shown in FIG. 2, the bottom blade edge 5 is formed as a curved blade edge whose middle portion is concaved most toward the center of the cutting blade cutting portion 2.

Further, the tip of the cutting blade plate portion 2 is formed in an R shape.

Further, the concave portion 4 is provided with the cutting blade plate portion 2.
2, a hook-like scraping claw 7 is formed by the tip of the cutting blade cutting portion 2 and the recessed portion 4 as shown in FIG.

In this embodiment, the shape of the main body A composed of the cutting blade plate portion 2 and the grip portion 1 is changed when the main body A is grounded on the ground with the blade edge 3 facing downward. The blade edge 3 of the cutting blade plate portion 2 is formed in a bent shape such that the blade edge 3 of the cutting blade plate portion 2 cannot come into contact with the ground even if the tip end portion of the blade plate portion 2 and the grip portion 1 touch the ground.

More specifically, the cutting blade plate portion 2 is formed in a shape that is bent in one direction with respect to the bar-shaped grip portion 1 on the side where the blade edge 3 is formed, and the bent cutting blade plate portion is formed. The configuration is such that the shape of the main body A is bent into a V-shape by the two shapes.

Further, a substantially middle portion of the other side edge of the cutting blade plate portion 2 is angled outward to form a convex portion 11.

Accordingly, since the present embodiment is constructed as described above, two cutting edges are provided, and the leading edge 6 is formed between the two cutting edges. When the blade 3 of the main body A is brought into contact with the weeds 10 and the leaf stems 8 and the main body A is pulled toward the user or the main body A is swung down, the soft material is cut off by the blade edge 3 and the hard material is cut by the blade edge 3 in FIG. As shown in the imaginary line of FIG. 1, first, it slides while cutting in the tip direction along the blade edge 3, is guided to the recessed portion 4 via the leading edge 6 in the state of being cut halfway, and is locked. As it is, it is completely cut by the bottom edge 5.

That is, since a two-stage cutting action of the cutting action at the cutting edge 3 and the subsequent cutting action of the bottom cutting edge 5 in the locked state is obtained, the cutting action has only a substantially straight cutting edge. A remarkable cutting effect is obtained as compared with a sickle or a knife, so that the cutting can be surely performed. In addition, even if the cutting edge 3 is shortened, a sufficient cutting force can be obtained by the above-mentioned effect, so that the size can be reduced.

Also, as shown in FIG. 4, the thumb is placed on the upper part of the blade edge 3 and the cutting part 9 of the leaf stem 8 is cut between the thumb and the cutting blade cutting part 2 with the leaf stem 8 interposed therebetween. Cutting can also be performed by using a conventional small knife against the rim 3. According to such a method of use, the cut portion of the leaf stem 8 can be reliably cut, and the cut leaf can be surely cut. It is most suitable for horticulture as the stem 8 can be collected.

Further, since the hook-shaped scraping portion 7 is formed at the tip of the cutting blade plate portion 2, the ground of the root of the weed can be scraped by the scraping portion 7, so that the root of the weed can be easily cut.

Further, without sharpening the tip of the cutting blade cutting portion 2, R
Even if the main body A is dropped on the ground or floor with its tip down, there is no need to worry about sticking to the ground or floor, and the entire shape is bent in a U-shape. Since the edge 3 is configured so as not to contact the ground, the floor is hardly damaged even when dropped on the floor, and the blade is not chipped by the impact of the drop.

Further, since the convex portion 11 is provided on the other side edge of the cutting blade cutting portion 2 on the side opposite to the blade edge 3, when used as shown in FIG. 4, this convex portion 11 is applied to the base of the index finger. If it is held, it will be firmly fixed in your hand and it will be hard to drop accidentally. Moreover, since the center of gravity comes near the convex part 11, it will easily fall with the convex part 11 side down when it drops, and the blade edge 3 Hard to hurt.

[0040]

Since the present invention is constructed as described above, when cutting grass or foliage with a sickle or a hatchet, the soft grass or foliage is cut at the base edge of the cutting blade plate. However, hard grass and leaf stalks slide to the tip of the cutting edge and cut into the recess at the tip of the cutting blade plate, even if they are not completely cut, even if they are not completely cut. In this locked state, cutting is performed by the bottom edge.

Accordingly, the object to be cut can be provided with a two-stage cutting resistance by the cutting resistance of the cutting edge on the base end side of the cutting blade plate portion and the cutting resistance of the bottom cutting edge in the locked state. Extremely practical breakthrough with excellent cutting performance that allows cutting objects such as hard grass and leaf stems to be reliably cut by the bottom blade edge even when locked in the recessed part Cutting tool.

Further, by adopting the blade edge structure which provides the two-stage cutting resistance, the above-mentioned effect can be obtained without a structure having a long blade edge like a sickle, so that a sufficient cutting force can be obtained. The blade edge can be shortened, and the cutting blade plate can be downsized.

Also, when cutting grass with a sickle, if the force of pulling forward is weak, hard grass may slip on the blade edge and cannot be cut, and the sickle is continuously pulled with stronger force to cut it. Then, it was often the case that the trajectory of the blade plate could not be read, resulting in injury.However, according to the cutting tool of the present invention, even hard grass can be reliably cut, so that the cutting blade plate portion It is an excellent cutting tool that makes it easy to read the trajectory and therefore has little risk of injury and excellent safety.

According to the second aspect of the present invention, in addition to the function and effect of the first aspect of the present invention, the grass or foliage which slides on the cutting edge is moved from the cutting edge to the bottom of the concave portion at the center of the cutting blade plate portion. It becomes easier to guide and lock the concave portion along the guiding edge inclined toward the blade edge, and the cutting performance is further improved.

According to the third aspect of the present invention,
In addition to the functions and effects of the invention described above, for example, when used for mowing, the ground of the root of the weed can be scraped by the scraper to cut the root of the weed, which is more practical.

In the invention of claim 4, claims 1 to 3
In addition to the functions and effects of the invention, even if the main body is dropped on the ground, the blade edge cannot contact the ground, so that there is no possibility that the blade is chipped by the impact at the time of dropping, and it becomes more practical.

[Brief description of the drawings]

FIG. 1 is a front view of the present embodiment.

FIG. 2 is an enlarged perspective view showing only a cutting blade plate portion of the present embodiment.

FIG. 3 is an explanatory diagram illustrating a use state of the present embodiment.

FIG. 4 is an explanatory diagram showing another use state of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grasping part 2 Cutting blade cutting part 3 Blade edge 4 Recessed part 5 Bottom blade edge 6 Induction edge 7 Scratching claw part A Main body

Claims (4)

[Claims] 1. A cutting tool having a cutting blade plate portion provided at a tip end of a grip portion, and a cutting edge formed on a side edge of the cutting blade plate portion,
Forming a concave portion recessed toward the center of the cutting blade plate portion at the tip end side of the cutting blade plate portion having a blade edge on a side edge, forming a bottom blade edge at least at a bottom edge of the concave portion. A cutting tool, wherein a blade edge on a base end side of the cutting blade plate portion and a bottom blade edge of the recessed portion are provided in a state of being juxtaposed in a longitudinal direction of the cutting blade plate portion. 2. A concave portion at the center of the cutting blade plate portion from the cutting edge of the cutting blade plate portion between the blade edge on the base end side of the cutting blade plate portion and the bottom blade edge of the recessed portion. The cutting tool according to claim 1, wherein a guiding edge inclined toward a bottom blade edge of the portion is formed. 3. The method according to claim 1, wherein the concave portion is formed slightly proximal to the distal end of the cutting blade plate portion, and a scraping claw portion is formed by the concave portion and the distal end of the cutting blade plate portion. Claims 1 and 2
The cutting tool according to any one of the above. 4. When the main body comprising the cutting blade plate portion and the gripping portion is shaped such that the blade edge is directed downward and the main body is grounded on the ground, the tip of the cutting blade plate portion and the grip are formed. The cutting tool according to any one of claims 1 to 3, wherein a blade edge of the cutting blade plate portion is formed in a bent shape so that the blade edge of the cutting blade plate portion cannot contact the ground even if the holding portion contacts the ground.