Grass cutting shears

Abstract

Conventional grass shears only use a straight blade on the blade body, so they are not suitable for universally cutting grass of various shapes and hardness. [Solution] The grass shears of the present invention are comprised of a pair of blade bodies, each having a blade portion on one side of the blade body, pivotally supported by a support shaft so that the blade portions face each other and a pair of handles connected to the base of the blade body, the blade body being curved convexly on the blade portion side. Also, the blade portion has two protruding blades with acute angles connected with a gap between them, and a plurality of cutting blades whose outer periphery is roughly M-shaped are provided in series at a predetermined interval, with a saw-like blade formed on the inside of the roughly M-shaped cutting blade and a straight blade formed on the outside of the cutting blade.

Description

[Technical field]

[0001] The present invention relates to grass shears used for cutting lawns, cutting weeds, etc. [Background technology]

[0002] Conventional grass shears are structured so that a pair of blades, each with a straight blade on one side, are supported on a shaft and rotated around a fulcrum, cutting the object by applying pressure and friction while the blades are in contact with the object. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 8-154491 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional grass shears only use straight blades on the blade body, and therefore are not suitable for universally cutting grass and branches of various shapes and hardness. [Means for solving the problem]

[0005] In order to solve the above problems, the grass shears of the present invention are provided with a pair of blade bodies, each having a blade portion on one side of the blade body, which are supported by a support shaft so as to be freely opened and closed so that the blade portions face each other, and a pair of handles are connected to the base of the blade bodies, and the blade portions are curved convexly on the blade portion side. Also, the blade portions have two protruding blades with acute angles connected with a gap between them, and a plurality of cutting blades whose outer periphery is roughly M-shaped are provided in series at a predetermined interval, with a saw-like blade formed on the inside of the roughly M-shaped cutting blade and a straight blade formed on the outside of the cutting blade. Effect of the Invention

[0006] According to the grass shears of the present invention, even if the weeds to be cut are a mixture of various shapes and hardness, the weeds are cut in two stages using blades with different properties, so that no weeds are left uncut. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a plan view of the grass shears of the present invention. [Diagram 2] FIG. 2 is a side view of the grass shears of the present invention. [Diagram 3] FIG. 2 is an enlarged view of a blade of the grass shears of the present invention. EXAMPLES

[0008] FIG. 1 is an external view of the grass shears of the present invention. FIG. 2 is a side view of the grass shears of the present invention. In FIG. 1 and FIG. 2, 1 denotes a pair of blades made of metal such as iron or stainless steel, and one side of the blade 1 is provided with a blade portion 2. The pair of blades 1 are supported by a support shaft 4 so that the blades can be opened and closed. The blade 1 is curved so that the blade portion 2 side is convex, and the blade portion 2 has two protrusions with acute angles at its tip and a plurality of cutting blades 3 with an approximately M-shaped outer periphery are provided at a predetermined interval. Furthermore, one end of a pair of handles 6 is connected to the base of the blade 1 by a connecting portion 5a so that the angle with the blade 1 can be freely changed in a direction perpendicular to the opening and closing direction of the blade 1, and a grip portion 7 is connected to the other end of the handle 6 by a connecting portion 5b so that the angle can be freely changed in a direction perpendicular to the opening and closing direction of the blade 1.

[0009] 3 is an enlarged view of the blade body 1 of the grass shears of the present invention. Two sharp-pointed protruding blades 8a and 8b are connected via a gap 11 at the blade portion 2 of the blade body 1 to form a cutting blade 3 having an approximately M-shaped outer periphery. A saw blade 9 is formed on the inside of the approximately M-shaped cutting blade 3, and a straight blade 10 is formed on the outside of the protrusions 8a and 8b. The space between the adjacent cutting blades 3 forms a curved blade 12 that follows the curvature of the blade body 1.

[0010] According to the grass shears of the present invention having the above-mentioned configuration, first, when the gripping portion 7 is opened with both hands, the pair of blade bodies 1 opens with the support shaft portion 4 as a fulcrum. Then, when the open blade body 1 pinches the weeds to be cut, and the gripping portion 7 is closed, the cutting blade 3 first comes into contact with the object, and the saw blade 9 formed on the cutting blade 3 pierces and cuts the weeds. After that, the straight blade 10 and the curved blade 12 provided in the gap portion 11 cut the weeds into smaller pieces by shearing force and friction. In this way, since the object is cut in two stages by blades with different properties, even if the object has a mixture of various shapes and hardness, no part is left uncut. In addition, since the blade body 1 is curved, the object can be cut as if it is pushed out, which is efficient. Furthermore, since the cutting chips of the weeds cut by the saw blade 9 accumulate in the gap portion 11, it is possible to prevent the cutting chips from getting tangled in the saw blade 9. [Explanation of symbols]

[0011] 1...Blade body, 2...Blade part, 3...Cutting blade, 4...Spindle part, 5a, 5b...Connecting part, 6...Handle part, 7...Gripping part, 8a, 8b...Protruding blade, 9...Saw blade, 10...Straight blade, 11...Gap part, 12...Curved blade

Claims

1. A pair of blades, each with a blade portion on one side thereof, are supported on a support shaft so as to be freely opened and closed with the blade portions facing each other, and a pair of handles are connected to the base of the blades, wherein the blades are convexly curved on the blade portion side, and the blade portions have two acute-angled protrusions at their tips, each with a gap between them, and each cutting blade has an outer periphery that is roughly M-shaped and is arranged at a predetermined interval.

2. Grass cutting shears as described in claim 1, characterized in that a sawtooth blade is formed on the inside of the adjacent protrusions, and a straight blade is formed on the outside of the protrusions.

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