JPH08275680A - Mowing scissors - Google Patents

Abstract

PURPOSE: To provide mowing scissors having a simple structure, enabling to easily perform a mowing work in an easy posture, high in the efficiency of the work, excellent in durability and preservability, enabling to easily pull out the large stem of a mowed weed, etc., suitable for the pruning of garden trees, and excellent in safety and convenience. CONSTITUTION: Mowing scissors 1 are provided with handle portions 2c each bent at a bent portion 2d toward the side of the upper surface at an inclination angle of 90-160 deg., a moving member 5 fixed or detachably attached to the lower portion of a pivotal shaft 3, and grass-pulling depressions 2g used for pulling out the grass and formed on the mutually faced surfaces of the cutting portions 2a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to scissors suitable for mowing weeds, turfgrass and the like and pruning branches of garden trees.

[0002]

2. Description of the Related Art In recent years, mowing scissors and the like have been widely used for cutting weeds overgrown in fields and grass and grass laid in gardens. In particular, recently, in order to cope with a labor shortage and an aging society, improvement of workability of mowing work and reduction of work are required. The conventional mowing scissors will be described below with reference to the drawings. FIG. 6 is a perspective view of a conventional mowing scissors. Reference numeral 1'denotes a conventional mowing scissors, 2'denotes a pair of blades made of metal such as iron or stainless steel, which comprises a cutting portion 2a 'and a handle portion 2c' described later, and 3'each blade 2 ′
Axis consisting of bolts and nuts, etc., which are inserted into through holes (not shown) formed between the cutting portion 2a 'and the handle portion 2c' to pivotally support the blade bodies 2 '. The parts 4'are attached handle parts formed of wood or the like and having a length of about 50 cm, which are attached to handle parts 2c 'of the respective blades 2'described later. Incidentally, 2a 'is a cutting portion formed on each blade 2', and 2b 'is a cutting portion 2a'.
The blade portions 2c 'each having a length of about 20 cm on the opposite side portions of the handle 2c' are the handle portions continuously provided to the respective cutting portions 2a 'of the blade bodies 2', and the hand portion 2d 'is a hand when cutting grass. A refraction portion 2e ′ is formed by bending the handle 2c ′ at a bending angle of about 170 ° with respect to the upper surface of each blade 2 ′ so as not to rub against the ground.
The stopper portions are fixed by welding or the like with one ends facing each other on the upper surface of c '. Here, in order to mow weeds and turfgrass using the conventional mowing scissors 1 ', the grass is mowed in a mid-waist posture in which the waist is bent and the blade 2a' is floated several cm above the ground. For pruning branches at high places in the garden, scaffolding such as stepladder was prepared for the work.

[0003]

However, the above-mentioned conventional structure has the following problems. In other words, (1) When weeding grass, turf grass, etc. using mowing scissors, it is necessary to take a middle-waist posture in which the waist is bent, which makes it very inconvenient to mow the work and puts a heavy burden on the waist and knees. There was a problem that it was inferior in workability. (2) Due to the problem of (1) above, it is extremely painful to perform mowing work for a long time in a middle waist posture not only for people with weak hips and knees but also for healthy people. There was a problem that it was difficult to maintain and work efficiency was extremely poor. (3) When mowing grass shortly during mowing work, it is easy to accidentally pinch soil, stones, etc., by the blade part of the blade body, and as a result, there is a problem that the blade part is lacking and maintenance and durability are poor. there were. (4) It is not possible to operate with the mowing scissors floating several cm above the ground, and weeds or turfgrass cannot be trimmed at a uniform height. After pruning the field or garden, drive long. There was a problem that the efficiency was poor because there was a lot of waste, such as the need to re-cut the cut part. (5) In particular, there is a problem that turfgrass or the like in a garden is spoiled in aesthetics unless it is mowed at a uniform height. (6) In mowing work, it is also necessary to remove the stem of a large weed so that it may not be injured by stepping on it with a foot or the like after cutting the grass, but conventional mowing scissors allow the short stem to be pulled out. Since it is not a simple structure, it is necessary to pull it out by hand, and especially the large stem has roots that are difficult to pull out, and there is a problem that the work is complicated and the work efficiency is extremely poor. (7) In the pruning work of the branches of the garden tree, the pruning work of the branches extending horizontally can be performed, but the pruning work of the branches extending upward must be performed by climbing a stepladder and pruning horizontally, and the work is complicated and lacks workability. There was a problem that it was dangerous and lacked in safety.

The present invention solves the above-mentioned problems of the prior art. It has a simple structure and can easily mow work in a comfortable posture, has high work efficiency, is excellent in durability and maintainability, and can be mowed. It is an object of the present invention to provide mowing scissors which can easily pull out large stems such as weeds and are suitable for pruning garden trees and which are excellent in safety and convenience.

[0005]

In order to achieve this object, the present invention has the following constitution. That is, the mowing scissors described in claim 1 of the present invention have an inclination angle of 9 at the bending portion.
A handle portion bent to the upper surface side from 0 ° to 160 °, a moving portion fixedly or detachably fixed to the lower portion of the pivot portion, and a weeding recessed portion for weeding formed on the opposite surface of the cutting portion. , Is provided. The mowing scissors described in claim 2 of the present invention has a structure in which the mounting handle part is fixed or detachably fixed to the handle part in the first aspect. The mowing scissors described in claim 3 of the present invention has a configuration in which the moving part is a caster in claim 1 or 2. In the mowing scissors described in claim 4 of the present invention, in any one of claims 1 to 3, the pivot part has a moving part screwed to an inner wall of a hollow part bored from one end surface. It has a configuration including a moving portion mounting portion, a bolt having a threaded portion on an outer wall, and a nut screwed to the threaded portion of the bolt.

Here, as the material of the blade, an iron-based alloy such as stainless steel, a Co-Cr-W-based cobalt-based alloy such as stellite, or a composite material of steel and soft iron or stainless steel and soft iron is compounded. Etc. If the surface of the blade is plated with a metal such as chrome, the occurrence of rust and wear can be prevented as much as possible. The length of the blade is not particularly limited, but it is preferably formed to 10 cm to 30 cm. As the length of the blade becomes shorter than 10 cm, the amount of grass that can be cut by one opening and closing work decreases, so the efficiency of mowing work tends to decrease,
Further, as the length of the blade portion becomes larger than 30 cm, the weight of the entire blade body becomes heavy, and it tends to be difficult to open and close the mowing scissors, so that the efficiency of the mowing work tends to decrease, which is not preferable either. The weeding recesses are formed so as to face the blade portion or the opposite side portions of the blade body, respectively. The shape of the weeding recess is not particularly limited, and various shapes such as a semicircular shape, a semielliptic shape, and a triangular shape such as a triangular shape can be cited. The diameter (or width) of the weeding recess is not particularly limited, but is preferably 5 mm to 20 mm. As the diameter of the weeding recesses becomes smaller than 5 mm, it is recognized that the stem of the grass that has been mowed tends to be difficult to be sandwiched by the weeding recesses. There is a tendency that the grass cannot be pulled out through the hollow,
Neither is preferred. In addition, by providing a slight protrusion on the inner wall of the weeding recess, the protrusion can bite into the stem lightly to facilitate weeding without slipping, and the stem removed easily The operability can be improved by removing from the recess. The angle of inclination of the bending portion of the handle is preferably 90 ° to 160 °, and more preferably 100 ° to 150 ° with respect to the upper surface of the blade. As the angle of inclination of the bent portion becomes smaller than 100 °, there is a danger that the elbow may be bent at a right angle and the handle may be gripped to mow the grass during mowing work, which is dangerous. In addition, as the cutting part comes to be parallel to the ground as it becomes larger than 150 °, it tends to be difficult to mow the grass in a narrow place because the part to be mowed is far away, especially from 160 °. If the size becomes large, the tendency becomes remarkable and the handle becomes heavy, which makes it difficult for an old man or a woman to operate. In this way, by setting the inclination angle of the refraction portion within the above range, the sides can be tightened, and unnecessary work is not required, and stable work can be performed. In addition, branches that extend upward at high places in the garden can be pruned without using a scaffolding such as a stepladder because the cutting part is bent. Further, by disposing elastic bodies such as springs on the opposite side walls of the handle portion, it is possible to improve the return after closing the mowing scissors, so that the workability can be improved. Examples of the pivot portion include bolts, nuts and rivets. Examples of the material of the mounting handle portion include wood, polyolefin such as polypropylene, polystyrene, ABS, polycarbonate, and other hard synthetic resins; aluminum, stainless steel, and other metals.
The length of the mounting handle is not particularly limited, but it is preferably 0.8 m to 2.5 m. As the length of the mounting handle becomes shorter than 0.8 m, it is necessary to take a middle waist posture when mowing the work. Also, as the length of the mounting handle becomes longer than 2.5 m, the mowing scissors become heavier. Therefore, it is difficult to carry out the mowing work and the opening / closing angle of the blade becomes small, so that the efficiency of the mowing work tends to decrease, which is not preferable. By setting the length of the attachment handle within the above range, it is possible to comfortably perform mowing work in a standing posture without taking a middle waist posture. or,
As the mounting handle part, a small-diameter mounting handle part and a large-diameter and hollow mounting handle part for inserting the small-diameter mounting handle part are used so that the length can be freely adjusted and adjusted. Good. Examples of the handle portion include a belt-shaped body made of cloth or the like wound around one end of the mounting handle, and a tubular body made of synthetic rubber or synthetic resin attached to the one end. Also, as a method of attaching the mounting handle to the mounting portion of the blade body, after mounting the hollow mounting handle to the mounting portion, thermosetting resin is crimped, or the mounting handle is attached to the solid mounting handle. It is also possible to provide a fitting part or the like for fitting the above to fit. The moving unit is not particularly limited, but may be a conventionally known caster or the like. In addition, it is preferable that the moving portion is of a direction that allows the moving direction to be freely changed, since operability can be increased. As the caster, a wheel portion that is normally used, a shaft support portion that rotatably supports the wheel portion, a support portion that supports the shaft support portion, and a side wall portion of the support portion are formed. Examples thereof include a mounting portion and the like. Examples of the casters include various casters having two or more wheel portions. As these moving parts, those capable of floating the blade 2 cm to 3 cm above the ground are suitably selected, but those capable of variably adjusting the height may be used. It is convenient because the height of turfgrass can be adjusted. When using a moving part that floats the blade 2 to 3 cm above the ground, the height of the mowed grass can be minimized, so it is possible to easily plow the field after mowing in a field, etc. It can be trimmed to a height where you can comfortably walk on grass etc. As a method of attaching the moving portion, a screw-like portion is engraved in a hole formed in a pivot portion such as a bolt or a rivet, and the attaching portion formed in the moving portion is screwed into the screw-like portion. It can be attached by things. Further, by using the screwing means, the height can be freely adjusted by changing the screwing position.

[0007]

With this structure, the following actions are achieved. That is, (1) Since the upper part is bent at an angle of inclination of 90 ° to 160 ° at the bending part, it is not necessary to take a middle-waist posture in which the waist is bent when performing mowing work. In addition, since the movable portion fixedly or detachably fixed to the lower portion of the pivot portion is provided, it is not necessary to carry heavy work cutting scissors at the tip during the work. Therefore, the working speed is improved, and the mowing work can be easily performed.
Work efficiency can be improved. In addition, since it is possible to work directly below or apart from the grass, the grass and the like are less likely to be lost to the skin, etc., and safety can be improved. (2) Since it has a weeding recess formed in the cutting portion of the blade body, after sandwiching a large grass stem etc. in the weeding recess, it is attached using the principle of leverage with the moving part as a fulcrum. You can easily pull out a large grass stem just by pushing down the handle. (3) Since the mowing scissors are separated from the ground by an appropriate distance at the moving portion, the blade is not chipped with a stone or the like sandwiched between them, and the durability and maintainability of the blade can be improved. Further, since the position of the blade body can be made substantially constant by the moving portion without moving up and down, grass can be mowed at a uniform height. (4) As a result of (3), it is not necessary to repeatedly mow the same place, so that work efficiency can be improved. or,
When the attachment handle and the moving part are detachable, the mowing scissors can be easily stored, the convenience can be improved, and the blade can be easily maintained. (5) When the height of the moving part can be adjusted freely, the height of the cutting part of the blade from the ground can be freely changed, so mow grass etc. at the desired height. You can (6) If the moving part is detachable, it can be easily replaced or repaired even if the moving part is broken due to sand, stones, dirt, etc. clogged between the wheel part and the support part during mowing work. You can Moreover, since the moving part can be removed to reduce the weight, tall branches such as garden trees can be easily pruned.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a side view of an essential part of mowing scissors according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of a blade body and a moving part thereof. In FIG. 1 and FIG. 2, 1 is a mowing scissor of the first embodiment of the present invention, 2 is a pair of blades made of metal such as iron or stainless steel, which is composed of a cutting portion 2a and a handle portion 2c described later. A body, 2a is a cutting portion formed on the blade body 2, and 2b is a length of 20 mm on each of opposite sides of the cutting portion 2a.
The blade portion 2c formed to have a size of about cm is each cutting portion 2 of each blade body 2.
A handle portion 2d continuously provided to a is a bending portion formed in a substantially central portion in the longitudinal direction of the handle portion 2C in a bending angle α shown in FIG. 1 in a range of 90 ° to 160 °, and 2g is a blade portion 2b. The semicircular weeding recesses 3 having a diameter of 5 mm to 20 mm respectively formed on the blades 3 penetrate through the through holes (not shown) of the pair of blades 2 and the pair of blades 2
Is a pivot portion that rotatably supports a bolt by a bolt, a nut, and a spring washer. Reference numeral 4 denotes a substantially cylindrical mounting handle portion made of metal such as aluminum or stainless steel attached to the handle portion 2c of the blade 2 and having a length of 0.8 m to 2.5 m. A handle portion which is attached to one end portion of the handle portion 4 and which is made of a synthetic rubber or a synthetic resin and is made of a tubular body,
Reference numeral 4b denotes a mounting portion made of synthetic resin or the like for mounting the mounting handle 4 to the handle 2c of the blade 2 and one end of the mounting handle 4 which is crimped over. Reference numeral 5 is a moving portion composed of casters detachably fixed to the pivot portion 3. Next, the pivot part and the moving part of the mowing scissors of the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 3 is an exploded sectional view of a pivot portion and a moving portion in the mowing scissors of the first embodiment of the present invention. Reference numeral 3 is a pivot shaft portion that pivotally supports the pair of blade bodies 2, 3a is a bolt having a screw hole portion formed on one end surface, and 3b is a screw hole portion on an inner wall of a hollow portion formed on one end surface of the bolt. The moving portion attachment portion 3c has a nut 3c screwed to the bolt 3a, and the reference numeral 3d is a spring washer attached to the bolt 3a to make the blade body 2 elastic so that the blade body 2 can rotate. 5 is the pivot part 3
5a is a wheel portion which is detachably fixed to the wheel portion 5a and which is made of hard synthetic rubber or synthetic resin and is formed in a substantially columnar shape. 5b is an opening portion which is provided at a substantially central portion of the wheel portion 5a. The shaft supporting portion 5c, which is inserted in the shaft 5a and rotatably supports the wheel portion 5a, is formed in a substantially rod shape by stainless steel or the like. The shaft supporting portion 5c is made of metal such as stainless steel and is formed in a substantially U shape in cross section. A cover portion 5d for supporting both ends of the shaft support portion 5b at both ends, a rotary mounting portion 5d for rotatably supporting the cover portion 5c fixed to the top plate portion of the cover portion 5c by screwing or the like, and a rotary mounting portion 5e for rotational mounting. A mounting screw portion 5f having a cylindrical portion projecting in a substantially central portion of the top plate of the portion 5d and screwed on the peripheral wall portion is a holding member 5f for stably holding the mounting screw portion 5e on the rotary mounting portion 5g. Is a fastening for fixing the mounting screw portion 5e whose length is adjusted by being screwed to the moving portion mounting portion 3b to the moving portion 5. It is a nut. Here, the length adjustment means adjusting the distance of the cutting portion 2a of the blade body 2 from the ground. The method of using the mowing scissors of the present embodiment configured as described above will be described below. First, after the mowing scissors 1 are placed on the ground, the mowing work is performed by opening and closing the attachment handle 4 held in both hands while pressing the mowing scissors 1. Here, since the mowing scissors 1 have the moving portion 5, it is not necessary to lift the mowing scissors 1 to support the whole, so that the mowing work can be performed extremely easily. Also, when there is a large grass stem, after the stem is sandwiched by the weeding recessed portion 2g formed in the blade portion 2b of the cutting portion 2a, when the mounting handle portion 4 is pushed down, the moving portion 5 becomes a fulcrum. The cutting portion 2a is lifted up, and the stem can be pulled out. As described above, according to the present embodiment, since the bending portion of the blade of the mowing scissors is bent to the upper surface side at the inclination angle of 90 ° to 160 °, the posture of the middle waist where the waist is bent during the mowing work. There is no need to take it out, you can work standing up, less fatigue, and you can improve work efficiency. Further, by providing a moving portion fixedly or detachably fixed to the lower portion of the pivot portion,
Since it is not necessary to carry heavy mowing scissors with a tip during the work, the work speed can be improved. Further, since the height of the moving portion can be freely adjusted, the height of the cutting portion of the blade from the ground can be freely changed, and therefore grass and the like can be cut at a desired height. In addition, since the cutting portion of the blade body is provided with a weeding recess, the principle of leverage is used with the moving part as a fulcrum after sandwiching a large grass stem or the like remaining on the ground after mowing in the weeding recess. Then, you can easily pull out the stem of the grass just by pushing down the attachment handle.

(Second Embodiment) FIG. 4 is a side view of mowing scissors according to a second embodiment of the present invention, and FIG. 5 is a perspective view of the weeding recess. The cutting scissors 1A according to the second embodiment of the present invention is different from the first embodiment in that the attachment handle 4A and the blade 2 are provided.
It is the weeding recessed portion 2G provided in the. In FIG. 4, the attachment handle 4A is configured such that the length of the attachment handle 4A can be variably adjusted. In the mounting handle portion 4A, 4c is a hollow upper tubular portion, 4d is a lower tubular portion fitted and slidable in the hollow portion of the upper tubular portion 4c, and 4e is screwed to the end portion of the upper tubular portion 4c with a screw. The adjustment fixing part 4e is rotated on the upper cylinder part 4c to tighten the upper cylinder part 4c and the lower cylinder part 4d, whereby the length of the attachment handle 4A is appropriately adjusted and fixed. Next, in FIG. 5, 2h is a slight protrusion provided on the inner wall of the weeding recess 2G. The mowing scissors of the second embodiment of the present invention configured as described above are used similarly to the first embodiment. As described above, according to the present embodiment, in addition to the effect of the first embodiment, the mounting handle can be expanded and contracted and the length can be adjusted, so that it can be adjusted according to the height and use of the user, and the operation can be performed. The workability can be improved and the work efficiency can be remarkably improved. Also, when there is a large grass stalk, etc., a slight protrusion is arranged in the weeding recess formed in the blade of the cutting part, so that the protrusion lightly digs into the stalk to ensure the stalk It can be sandwiched without slipping, and when the mounting handle is pushed down, the moving part serves as a fulcrum to lift the weeding recess of the cutting part, which makes it easy to weed, and at the same time the removed stem can be easily weeded. It is possible to improve the operability by separating from the extraction recess.

[0010]

As described above, according to the present invention, the bending portion is formed in the range of 90 ° to 160 °, and the mounting handle portion is provided with an appropriate length, so that the mowing work can be performed easily in the standing posture. It is possible and has excellent workability. In particular, with a simple structure, the directionally movable part is fixedly or detachably attached to the lower part of the pivot of the mowing scissors, and the force for a person to support and lift the entire mowing scissors is unnecessary, improving operability. At the same time, the work becomes significantly easier, less fatigue, and workability is improved. In addition, the moving part cuts grass evenly, which improves work efficiency and makes the appearance of the grass very beautiful after cutting. In addition, the large stem that is removed after mowing the grass cannot be pulled out with the force of your finger, but the moving part becomes the fulcrum of the lever by holding the stem in the mowing scissors with the weeding recess and pushing down the mounting handle with your hand. The blade rises and the stem comes off. Therefore, the grass can be easily mowed in a more comfortable posture, and the safety of being able to easily pull out large stems such as weeds cut off is improved. Furthermore, the moving part can prevent the blade part from pinching stones such as the ground and damaging the blade part, and is excellent in reliability and durability. As described above, the mowing scissors having excellent workability, reliability, durability and convenience can be realized.

[Brief description of drawings]

FIG. 1 is a side view of a main part of mowing scissors according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a blade body and a moving portion of the mowing scissors according to the first embodiment of the present invention.

FIG. 3 is an exploded sectional view of a pivot portion and a moving portion of the mowing scissors according to the first embodiment of the present invention.

FIG. 4 is a side view of the mowing scissors according to the second embodiment of the present invention.

FIG. 5 is a perspective view of a weeding recess of mowing scissors according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a conventional mowing scissors.

[Explanation of symbols]

 1,1A Mowing scissors of the present invention 1'Conventional mowing scissors α Bending angle 2,2 'Blades 2a, 2a' Cutting parts 2b, 2b 'Blade parts 2c, 2c' Handles 2d, 2d 'Bending parts 2e' Stoppers Part 2g, 2G Weeding recessed part 2h Projection part 3, 3'Pivot part 3a Bolt 3b Moving part mounting part 3c Nut 3d Spring washer 4, 4A, 4 'Mounting handle part 4a, 4a' Handle part 4b Mounting part 4c Upper cylinder part 4d Lower cylinder part 4e Adjustment fixing part 5 Moving part 5a Wheel part 5b Shaft supporting part 5c Cover part 5d Rotating mounting part 5e Mounting screw part 5f Holding member 5g Tightening nut

Claims (4)

[Claims] 1. A handle portion bent at an upper surface side at an angle of inclination of 90 ° to 160 ° in a bending portion, a moving portion fixedly or detachably fixed to a lower portion of a pivot portion, and formed on an opposing surface of a cutting portion. Mowing scissors having a weeding recess for weeding. 2. The mowing scissors according to claim 1, wherein an attachment handle portion is fixed or detachably fixed to the handle portion. 3. The mowing scissors according to claim 1, wherein the moving part is a caster. 4. A bolt having a moving portion mounting portion, in which the moving portion is screwed to an inner wall of a hollow portion bored from one end surface of the pivot portion, and a screw portion on an outer wall, and the bolt of the bolt. The mowing scissors according to any one of claims 1 to 3, further comprising a nut screwed to the threaded portion.