JP2010154824A - Tilling blade for bush cutter, and the resultant bush cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new cutlery-related technique for bush cutter, capable of surely digging down the ground even in case the bush cutter is low-powered with low output, and enabling weed roots firmly entangled one another in the ground to be efficiently cut, crushed and agitated. <P>SOLUTION: A tilling blade 1 for a bush cutter 5 is such that: a revolving shaft 61 at the center of the cutlery-fitted seat 60 of a gear box 6 of a bush cutter 5 to be installed is formed with a cutlery panel seat 2 with a shaft hole 20 bored at the center, i.e. a circular flat plate shape identical in diameter D as a washer-type protective cover 63 for a tightener 62, and from each of a plurality of points under balance on the outer circumferential rim of the cutlery panel seat 2, the protective cover 63 when tightened on the revolving shaft 61 and tilling tines 3 with its length L set longer than the thickness dimension T of the tightener 62 are integrated together so as to be formed extendedly. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

    The present invention relates to a hammering machine, from the field of providing and selling equipment and tools necessary for transportation, storage, assembly and installation as well as the field of manufacturing a hammering machine and a blade for the same. , Fields that provide materials, machinery, and parts necessary for materials, such as wood, stone, various fibers, plastics, various metal materials, etc., electronic components incorporated in them, and control-related equipment that integrates them Fields that are generally referred to as industrial machines, such as the field of various instruments, the field of various measuring instruments, the field of power machines that move the equipment, the equipment, the electric power that is the energy and the field of electricity and oil, , Testing and researching these facilities and instruments, fields related to their display, sales, import and export, generals, results of their use and facilities and instruments for making them There are no unrelated technical fields, such as the fields related to collection and transportation of garbage generated during operation, the recycling field that efficiently recycles the garbage, and new fields that cannot be envisaged at this time. It is.

(Points of interest)
Expansive fields and weed weeding, etc. are frequently done during the hot spring and summer seasons and are physically difficult, so weed weeds efficiently using a brush cutter. There are many people who want to pay, but the conventional brush cutter usually has a flat blade-like blade to be mounted, which is at least a few centimeters above the root of the weeds that grow. We will cut the gawa, but if we cut only the upper stems and leaves while leaving the roots in the ground, weeds will occur again several days after cutting and weeding frequently. The work had to be repeated, requiring a lot of labor and labor.

(Conventional technology)
In consideration of such a situation, for example, as represented by the one proposed in Patent Document 1 (1) below, a dent forming portion bent in the centrifugal direction and downward from the outer diameter side of the rotary blade for a brush cutter And the subsequent upwardly inclined portion in the centrifugal direction, the downwardly inclined portion in the centrifugal direction, and the scooping portion that is inclined upward toward the rear in the rotational circumferential direction, and the outer diameter blade edge is in the ground. An attachment hole for attaching a brushing machine is formed in the center of a disk-shaped plate body as shown in Patent Document 1 (2), which makes it easy to cut and weeds can be rooted and excised. A rotary blade with a plurality of protrusions on one side of the blade. Mounted on a brush cutter and moving while rotating the same rotating blade, each protrusion scratches the ground and scrapes the weeds of the topsoil. There are some things that can be done.

However, the tiller blades for the brush cutters of the former patent document 1 (1) and the latter patent document 1 (2) are both designed to be used for cutting the weed stalks and leaves. It is possible to attach a special cutting tool that can be installed, and if it is soft ground, it can be easily cut to reach the root of weeds, but it is somewhat hard ground or thick and densely entangled It is not possible to cut the roots with certainty, and in the case of such unfavorable conditions, it is still necessary to use agricultural machinery such as sickle and hoe as in the past, or bring in dedicated large machines such as tractors and tillers. However, when weeding between the furrows in the field, there was no reliable way to remove root weeds by steady manual work so as not to damage or contaminate the crops.
(1) Japanese Unexamined Patent Publication No. 2000-333524 (2) Japanese Utility Model Laid-Open No. 5-4831

(Awareness of problems)
As described above, each of the various tillage blades for a tiller that has been proposed so far has an outer diameter that is substantially the same as that of the other rotary blades for weeding. It is assumed that it is formed so that it can be cut into the roots of the weeds with almost the same feeling of use, but the wiping machine that is not designed in consideration of the purpose of use is strong enough to cut into the ground There is a fatal defect that it does not have torque, and it is not possible to efficiently cut the roots of weeds that are slightly hard ground or strongly entangled. There is still no cutting-edge technology that can cut down and crush the roots of weeds that grow deeply in the ground.

(Object of invention)
Therefore, the present invention is capable of reliably digging up the ground even with a low-powered and low-powered brush cutter, and is capable of efficiently cutting, crushing, and stirring roots of weeds that are strongly entangled in the ground. Judging from the fact that it is impossible to develop a cutter tool, we have begun to develop and research it quickly and have repeated trials and errors over many years and many trials and experiments. The tiller blade for a blower and the tiller with the same have been successfully realized. Hereinafter, the configuration thereof will be described in detail together with an embodiment representing the present invention shown in the drawings.

(Structure of the invention)
As clearly understood from the embodiments representing the present invention shown in the drawings, the tiller blade for a brush cutter of the present invention basically comprises the following configuration.
That is, a gear box is provided at the tip of the operation rod with the base end connected to the prime mover, and the operation shaft is mounted on the rotary shaft that protrudes from the center of the blade mounting seat of the gear box. A blade plate seat having the same diameter as that of the washer mold protective cover for the tightening tool and capable of being tightened is formed, and a shaft hole for drilling through the rotary shaft is formed in the center. From each of a plurality of locations balanced around the circumference, each of the tapered tip portions is set to a length exceeding the thickness of the protective cover and the fastening tool when fastened to the rotating shaft. , So that it surrounds the protective cover when tightened to the rotating shaft, is parallel to the rotating shaft when mounted on the blade mounting seat, and is integrated to extend and form toward the distal end of the rotating shaft. Tiller for a brush cutter with the gist of the structure It is.

    A more specific example of a tiller blade for a brush cutter with this basic configuration is shown. A gear box is provided at the tip of the operating rod with the base connected to the prime mover, and an operating handle is installed in the middle of the operating rod. The washer has a circular flat plate with the same diameter as the washer protection cover for the fastener that can be fastened to the rotating shaft protruding from the center of the blade mounting seat of the gear box, and is mounted in the center through the rotating shaft. The protection is provided when each of the tapered tip portions is fastened to the rotary shaft from a plurality of locations that form a blade base with a perforated shaft hole and balance around the outer periphery of the outer periphery of the blade base seat. To the rotary shaft when the blade is mounted on the blade mounting seat so that the tilling claw part set to a length exceeding the thickness dimension of the cover and the fastener is immediately attached to the protective cover when tightened to the rotary shaft Parallel and extending toward the tip of the same rotation axis From the configuration that is formed so as to be integrated and formed so that the tip of each blade pawl in the circumferential direction of the blade base is slightly inclined in the centrifugal direction. It becomes the tilling blade for

    In other words, a gearbox is provided at the tip of the operation rod with the base end connected to the prime mover, and an operation handle is mounted in the middle of the same operation rod, protruding from the center of the blade mounting seat of the gearbox. A blade plate seat having the same diameter as the washer mold protective cover for a fastener that can be fastened to the rotation shaft, and having a shaft hole for mounting through the rotation shaft in the center, is formed. For tillage in which each tapered tip portion is set to a length that exceeds the thickness of the protective cover and fastener when tightened to the rotating shaft from each of a plurality of locations balanced around the circumference of the outer peripheral edge The claw portion is parallel to the rotation axis when mounted on the blade mounting seat so as to surround the protective cover when it is fastened to the rotation shaft, and is extended and formed toward the front end of the rotation shaft. 1 in the circumferential direction of the blade base. Each tip is placed in a posture that is slightly tilted in the centripetal direction as long as it is not buffered by the fastener protection cover when the blade is mounted on the blade mounting seat of the brush cutter. A tiller blade for a brush cutter having a structure is provided.

    Furthermore, in other words, the blade mounting seat of the gearbox of the brushing machine, in which a gearbox is provided at the tip of the operating rod with the base end connected to the prime mover, and an operating handle is mounted in the middle of the operating rod. It is a circular flat plate with the same diameter as the washer protection cover for the fastener that can be fastened to the rotating shaft protruding from the center, and a cutter base seat with a shaft hole for attaching the rotating shaft penetrating in the center is formed. From each of a plurality of locations balanced around the outer periphery of the outer edge of the blade base, each tapered tip is set to a length exceeding the thickness of the protective cover and the fastener when tightened to the rotating shaft. The tilling claw portion thus formed is parallel to the rotation axis when mounted on the blade mounting seat so as to surround the protective cover when tightened to the rotation shaft, and is directed toward the tip of the rotation shaft. Integrate to stretch and form, and turn the blade base The tip of each nail holder in the direction is inclined slightly in the centrifugal direction, and each tip of the nail portion other than the claw portion inclined in the centrifugal direction is attached to the blade mounting seat of the brushing machine. In this case, the tiller blade for a brush cutter is configured to be formed in a posture slightly tilted in the centripetal direction within a range not buffered by the fastener protective cover.

(Related invention)
In relation to the above-described tiller blade for a brush cutter, the present invention includes a brush cutter employing the same.
That is, the tiller blade for a brush cutter according to any one of the above, which forms the basis of the present invention, the shaft hole of the blade base is provided with a gear box at the distal end of the operation rod with the base end connected to the prime mover, A brushing machine having an operation handle attached thereto is combined with a rotary shaft protruding from the center of the blade mounting seat of the gear box so as to penetrate the rotary shaft exposed from the shaft hole, and a protective cover and a fastener. It is a wiping machine that has a structure that is detachably mounted and tightened.

    As described above, according to the tiller blade for a brush cutter according to the present invention, unlike the conventional one, from the characteristic characteristic configuration as described above, the washer mold protective cover for the fastener of the brush cutter has the same diameter. It consists of a flat bladed base and a claw part for cultivation which is formed by extending and forming a length exceeding the thickness of the protective cover and fastener from a plurality of locations around the outer periphery. Since the claw portion is parallel to the rotary shaft so as to surround the protective cover of the brushing machine, the rotational torque transmitted from the rotary shaft of the brushing machine to each tilling claw portion is any of the conventional types. It can be much larger than the blades and tillers, and achieves the maximum tillage torque for each model and model, regardless of the model or model of each company. And the smallest diameter possible Because it is set, it is convenient for weeding in a narrow range such as in the furrows of the field, there is no risk of damaging the crop, and it is possible to realize efficient weeding work at each stage It can be effective.

    In addition, all plows that are formed so that the tip of each plow part for each tilling in the circumferential direction of the blade base is slightly inclined in the centrifugal direction Unlike the case where the tip of the claw portion rotates so as to pass on the same circular line, the claw portion rotates so that it passes through the concentric annular double line of the inner and outer sides of the ring. It is possible to excavate the ground more efficiently in combination with the large torque that can be generated with the development of the plant, and to make it possible to stir and cut the roots spreading in the ground of weeds more effectively. it can.

    In addition, the tip of each tilling nail that is placed every nail in the circumferential direction of the blade base is fixed in the centripetal direction as long as it is not buffered by the fastener protection cover when it is mounted on the blade mounting seat of the brush cutter. Each plow with a slightly inclined posture can be attached to the blade mounting seat with a fastener and a protective cover without hindrance, and the rotation center is inclined toward the side. If the claw portion can achieve a much larger rotational torque and if the same model and the same type of brush cutter are used, it is possible to obtain an excellent feature that a higher tillage performance can be exhibited.

    And each tip which becomes every nail holder in the circumferential direction of the blade base is in a posture slightly inclined in the centrifugal direction, and each tip of the nail portion other than the claw portion inclined in the centrifugal direction When mounted on the blade mounting seat of a brush cutter, the one formed in a posture slightly tilted in the centripetal direction within the range not buffered by the fastener protection cover is for each tiller slightly tilted in the centrifugal direction described above. It is possible to simultaneously achieve excavation and agitation performance by the claw part and improvement of rotational torque by each cultivation claw part slightly inclined in the centripetal direction. It can be raised to each stage.

    Further, according to the tiller equipped with the tiller blade for the washer according to the present invention, unlike the conventional ones, the present invention has a characteristic configuration as described above, so that the present invention is applied to a general tiller. Up until now, using a conventional wiping machine, only the stems and leaves exposed on the surface of weeds could be excised, and the roots remaining in the ground could be removed for a short period of time. As weeds grow again, weeding work must be repeated frequently, so without using a machine, bend into a vast agricultural field for a long time, and remove the roots one by one by hand. We had to be patiently weeded, and in any case, a great labor burden was imposed. You can finish it, and even if you are in a narrow space It is possible to achieve a weeding effect equivalent to manual weeding by cutting and removing without crushing crops, etc. It has the excellent effect of significantly delaying the weed regeneration period than when weeding, reducing the number of weeding operations throughout the year, and greatly improving the work efficiency of agricultural work.

In implementing the present invention having the above-described configuration, the best or desirable mode will be described.
The blade base of the tillage blade is joined to the blade mounting seat of the gear cutter gearbox to be mounted in a stacked manner, and can be mounted in a penetrating manner on the rotating shaft of the blade mounting seat, and can be coupled to the rotating shaft A tightening tool, its protective cover, and a tool mounting seat that can be tightened and temporarily fixed. The protective cover has a circular plate shape with the same diameter as that of the protective cover. Drilling shaft holes, and extending and forming tilling claws from the outer peripheral edge and a plurality of balanced areas around the circumference, and blades for general wiping machines It should be made of a material such as steel or stainless steel having equivalent or higher durability strength, or it should be as small as possible and set to a circular flat plate with exactly the same diameter as the protective cover. As shown in the examples described later, the protective cover , It is possible to assume that a set diameter plus a small margin size for the desorption operation.

    The shaft hole of the tool rest serves as a function that allows the tool rest to be attached to the rotation shaft of the gear box tool mounting seat of multiple types of brush cutters manufactured by each company without any trouble. It must be set to a diameter slightly larger than each rotation shaft in the seat, and to a size and shape that can be easily attached and detached.

The claw portion for tillage is driven to rotate by receiving the rotational force output through the blade mounting seat of the gear cutter gearbox to be mounted and the rotating shaft, and the ground so that the roots of weeds under the surface can be plowed. The protective cover and the tightening when the tapered tip ends are tightened to the rotating shaft from at least the outer peripheral edge of the blade base seat and the plurality of balanced portions around the circumference. It must be regulated to a length that exceeds the thickness of the tool, and is made of a material such as steel, cemented carbide, stainless steel, etc. that has a durability equal to or greater than the cutting edge of a general blade cutter. A separate chip made of cemented carbide steel, high-speed tool steel, stainless steel, ceramics, etc. is brazed or bolted at the appropriate place where each tip is a cut into the ground. Integrated with bonding When all the tips are attached to the blade mounting seat of the brush cutter, the posture is parallel to the rotation axis. Each tip for each nail holder in the direction is formed so that the tip is slightly inclined in the centrifugal direction, or each tip for each nail holder in the circumferential direction of the blade base is When mounting on the cutter mounting seat of the brush cutter, it should be formed so as to be slightly inclined in the centripetal direction as long as it is not buffered by the fastener protection cover, When the tip of each nail holder is slightly tilted in the centrifugal direction, and each tip of the claw portion other than the claw portion inclined in the centrifugal direction is mounted on the blade mounting seat of the brush cutter In the range that does not cushion the protective cover for the fastener, The it is possible to or shall become formed in the inclined posture, not to be limited to those nails copies.
In the following, the structure of the present invention will be described in detail together with an embodiment representative of the present invention shown in the drawings.

    1 is a side view and a bottom view of the tilling blade, FIG. 2 is a side view and a bottom view of a tilling blade in which a portion of the claw portion is inclined to a centrifugal saw, and FIG. Side view and bottom view of the cultivated blade, side view and bottom view of the cultivated blade in which the adjacent claw portions in FIG. 4 are alternately inclined by centrifugal and centripetal hooks, and the cultivated blade having slits formed in each claw portion in FIG. A side view and a bottom view of FIG. 6, a perspective view of the brush cutter and the tilling blade in the disassembled state of FIG. 6, a perspective view of the brush cutter by the tiller blade in the used state of FIG. 7, and the anti-scattering cover of FIG. In the example shown in the perspective view of the brush cutter using the tilling blade, the washer mold protective cover 63 for the fastener 62 that can be fastened to the rotary shaft 61 in the center of the blade mounting seat 60 of the gear box 6 to be mounted. A blade plate seat 2 having a circular flat plate shape having the same diameter D and having a shaft hole 20 drilled in the center. The pawl portion for tillage set to a length L exceeding the thickness dimension T of the protective cover 63 and the fastening tool 62 when fastened to the rotary shaft 61 from each of a plurality of balanced outer peripheral edges. 3 shows a typical embodiment of a tiller blade for a brush cutter according to the present invention in which 3, 3,... Are integrated so as to be drawn and formed.

    As can be clearly understood from these drawings, the tilling blade 1 for the brush cutter 5 of the present invention has a steel blade base 2 and a cemented claw portion 3, 3, which is made of cemented carbide integrated therewith. The blade base 2 is fastened to a rotary shaft 61 protruding from the center of the blade mounting seat 60 of the gear box 6 of the scraper 5 as shown in FIGS. 1 and 6, for example. Possible diameter of the washer-type protective cover 63 for the tightening bolt (tightening tool) 62 (indicated by a two-dot chain line in FIGS. 1 to 5) (a slight margin for mounting on the diameter D of the protective cover 63) The shaft hole 20 for attaching the rotary shaft 61 is drilled in the center, and is balanced from the plurality of locations balanced around the outer peripheral edge of the blade base 2. , The protection when the tapered tip portions 30, 30,... Are fastened to the rotary shaft 61. The tilling claws 3, 3,... Set to a length L exceeding the thickness dimension T of the bar 63 and the tightening bolt 62 head are surrounded by the protective cover 63 when tightened to the rotary shaft 61. It is parallel to the rotating shaft 61 when mounted on the blade mounting seat 60, and is welded and integrated so as to extend and form toward the distal end of the rotating shaft 61.

    The tilling claws 3, 3,... Have their base end portions integrated into a short cylindrical shape, and the cylindrical base end is integrated and coupled to the outer peripheral edge of the blade base 2. The blade plate seat 2 and the tilling claws 3, 3,... Are joined together by welding, brazing, interference fitting, bonding, etc., hot forging a disk-shaped plate material, The shaft hole 20 and the tilling claws 3, 3,... Can be formed by cold forging, pressing, drawing, or the like.

    As shown in FIG. 2, the tilling blade 1 has each of the tilling claw portions 3, 3,... It can be formed so as to have a slightly inclined posture in the centrifugal direction, and as shown in FIG. When the nail portions 3, 3,... Are mounted on the blade mounting seat 60 of the brush cutter 5, the centripetal direction is within a range not to be buffered by the tightening bolt 62 protective cover 63. It can be formed to have a slightly inclined posture.

    As shown in FIG. 4, the tilling blade 1 is provided with each of the tilling claws 3, 3,... Are inclined slightly in the centrifugal direction, and the claw portions 3, 3,... Other than the claw portions 3, 3,. When mounted on the blade mounting seat 60 of the brush cutter 5, it can be formed in a posture slightly inclined in the centripetal direction within a range not buffered by the tightening bolt 62 protective cover 63.

    Further, as shown in FIG. 5, the tilling blade 1 is formed by extending the blade base 2 toward the side from the tip portions 30, 30,... , Each of the slits 31, 31,... Is formed in an inclined posture toward the rotation direction of the tilling blade 1. The edge portions 32, 32,..., Which become the direction of rotation and the rear side, can be made to have a posture slightly inclined in the centrifugal direction.

    As shown in FIG. 6, the tiller 5 of the present invention has a rotary shaft in which the tiller blade 1 has a shaft hole 20 of the blade base 2 protruding from the center of the blade mounting seat 60 of the gearbox 6. The tip of the tightening bolt 62 inserted through the protective cover 63 is screwed and fastened to the tip of the rotary shaft 61 exposed through the shaft hole 20 and combined with the shaft hole 20 so as to be temporarily fixed and integrated. In this example, the tiller blade 1 is driven to rotate by receiving the driving force of the prime mover 50.

More specifically, a wrapping prevention cover 64 is interposed between the blade mounting seat 60 of the gear box 6 and the tilling blade 1 blade base seat 2, and further, the tilling blade 1 blade base seat 2 and the protective cover 63. A spline holder 65 is sandwiched between them, and a tightening bolt (tightening tool) 62 is screwed into a reverse screw (left screw) of a screw hole (not shown) at the tip of the rotary shaft 61 and tightened to be temporarily fixed.
The tightening tool 62 is a tightening nut that can be screwed to a male screw engraved on the outer peripheral wall of the rotating shaft 61 in addition to a tightening bolt 62 screwed to the female screw of the rotating shaft 61 of the gear box 6 blade mounting seat 60. Of course, it is possible to replace it with a fastener other than a bolt or a nut that can be connected with the same strength.

    Furthermore, as shown in FIG. 8, the scattering machine 5 to which the tilling blade 1 is attached can be provided with an anti-scattering cover 4. When the tilling blade 1 mounted on the blade mounting seat 60 of the gearbox 5 is driven to rotate and the tilling claws 3, 3,... Are in contact with the ground surface, the tilling claws 3, 3), it is possible to prevent the litter, soil smoke, pebbles, etc. that are blown away from being scattered around, and the rotating cultivating blade 1 itself buffers the surrounding crops and curbs. The tip of each of the cultivating claw portions 3, 3,... Of the cultivating blade 1 attached to the gear box 6 is excluded except for the wrinkles 30, 30,. The outer periphery and top surface of the tillage blade 1 can be surrounded together with the gear box 6 to be mounted. The wall 40 is provided with a mounting hole 41 and a detachable metal fitting 42 that can be detachably fixed at an appropriate position in the middle of the operation rod 51, and is a soft material capable of buffering a collision force such as pebbles. Although it can be said that the peripheral wall 40 is preferably made of synthetic resin, it can be made of soft natural rubber or hard metal as required.

    The mounting hole 41 of the anti-scattering cover 4 functions to allow the gear box 6 to pass through when it is mounted in the middle of the operation rod 51 of the brushing machine 5, and each gearbox 6 of the brushing machine 5 made by each company. The size and shape should be set to allow passage, the anti-scattering cover 4 itself is made of soft synthetic resin, and the mounting hole 41 has a shape slightly smaller than the outer shape and size of the gear box 6. The size can be set so that the gear box 6 can be passed and mounted by using the flexibility of the anti-scattering cover 4.

    If this scattering prevention cover 4 is shown as a more concrete thing, the front-end | tip of each nail | claw part 3, 3, ... for each contact | abutting of the cultivation blade 1 with which the gear box 6 was mounted | worn, and a cultivation will be used will be 30. , 30, ..., the outer periphery and the top surface of the tilling blade 1 can be enclosed with the gear box 6 to be mounted, and is made of a soft synthetic resin and has a rectangular surface wall 40 with an open bottom surface. A mounting hole 41 that allows the operation rod 51 and its tip to pass through the gearbox 6 is formed at an appropriate position, and a detachable fitting 42 that can be fastened and fixed with bolts and nuts (not shown) is provided. The operating rod 51 and the gear box 6 are arranged near the center in the face wall 40 through the mounting hole 41 from the outside, and the operating rod close to the gear box 6 by the bolts and nuts of the attachment / detachment fitting 42 is provided. 51 ahead More place, is made by incorporating to detachably temporarily fixed.

(Operation of Example 1)
As shown in FIGS. 1 and 6, the tilling blade 1 of the present invention having the above-described configuration is provided with the anti-winding cover 64 on the blade mounting seat 60 rotating shaft 61 of the brush cutter 5 gear box 6. The rotary shaft 61 is inserted into the shaft hole 20 of the tiller blade 1 blade base 2 and the spline holder 65 and the protective cover 63 are sequentially attached, and the tightening bolt 62 is screwed and tightened. 7, as shown in FIG. 7, the tiller 5 prime mover 50 is activated and the tilling claws 3, 3,... It is possible to manipulate the roots of the weeds while plowing them in contact with the ground.

    As shown in FIG. 1, the tilling blade 1 has a diameter D of its blade base 2 that substantially matches the diameter D of the protective cover 63 of the gear box 6. 3,... Are arranged on the circumference of the smallest diameter and have the maximum tillage torque. As shown in FIG. 2, each tillage nail portion for each nail placement in the circumferential direction is provided. 3, 3..., With the tips 30, 30,... Slightly inclined in the centrifugal direction, the claw portions 3, 3,. It rotates to pass through each of the annular double lines, and exhibits stronger stirring and cutting action.

    As shown in FIG. 3, the claw portions 3, 3,... As long as the position is slightly tilted in the centripetal direction within a range that does not, a stronger tilling torque will be exhibited, and as shown in FIG. Claw portions 3, 3... Claw portions 3 other than the claw portions 3, 3,... With the tips 30, 30,. , 3,..., Each tip 30, 30,... Is in a range where it is not buffered by the fastener protective cover 63 and is inclined slightly in the centripetal direction. The tip 30, 30,... Enhances the agitation and cutting action in the ground and tilts toward the centripetal direction. I tip 30, 30, ... is, becomes for generating a further strong rotation torque.

    As shown in FIG. 5, the tip portions 30, 30,... Of the tilling claws 3, 3,... Are formed with slits 31, 31,. , 31,... The tilling blade 1 is formed by slightly tilting the edge portions 32, 32,... In the rotational direction, and the slits 31, 31,. In addition, the edge portions 32, 32,... Inclined to the chamfer are sharply cut in the direction of rotation and cut sharply into the ground to stir the roots of weeds. The effect of cutting into a shape is greatly enhanced.

(Operation of Example 2)
As shown in FIG. 6 and FIG. 7, the brush cutter 5 of the present invention is an excellent tiller only by mounting any one of the tilling blades 1 in the first embodiment in the same manner as a normal tiller blade. It is possible to output a large torque by minimizing the diameter D of the blade base 2 of the tillage blade 1 and, further, each of the tilling claws 3, 3,. The one equipped with the tillage blade 1 that changes the posture and shape achieves the improvement of the tillage function according to each shape.

    Further, as shown in FIG. 8, the brush cutter 5 equipped with the anti-scattering cover 4 has a soil clump that scatters around when the rotary blade 1 that is rotationally driven contacts the ground and plows in an excavated manner. When weeds, roots, and the like are held in the anti-scattering cover 4 to prevent dust from being scattered around the field, the weed blade 1 that rotates to the surrounding crops is particularly useful when weeding the spaces between the fields. It will prevent the soil from coming into contact with the soil and weeds, soil and weeds, and roots.

(Effect of Example 1)
As shown in FIG. 5, the tilling blade 1 of the first embodiment having the above-described configuration is provided with slits 31, 31 formed in each of the tilling claw portions 3, 3,... ,... Are inclined and opened toward the rotation direction of the tilling blade 1, and the edge portions 32, 32,... Thus, the tilling function of each tilling claw portion 3 can be enhanced to each level, and the effect of further improving the efficiency of tilling work can be achieved.

(Effect of Example 2)
Further, as shown in FIG. 8, the brush cutter 5 according to the second embodiment is equipped with the anti-scattering cover 4 and can reliably prevent the litter, the weeds and the like from being scattered around during the tilling work. The practical advantage is that it is possible to prevent an unexpected situation that foreign matter such as crops and curbs are brought into contact with the rotationally driven tiller blade 1 to damage the surrounding objects and the tiller blade 1. You will get.

(Conclusion)
As described above, the tiller blade for a brush cutter according to the present invention and the brush cutter according to the present invention can achieve the intended purpose uniformly by the novel configuration, and can be easily manufactured, and the conventional brush cutter. Compared with the cultivation blade technology for use, it is much smaller and lighter and the rotational torque is increased at each stage. In addition, the labor burden of cultivation work can be greatly reduced and the cultivation blade itself can be made inexpensive. Horticultural farmers who have been able to provide more economically, have been unable to effectively excavate and cut roots that grow densely in the ground of weeds, and have been forced to weed by heavy manual labor Farmers and rice farmers are more interested in general households and companies that want a way to efficiently weed weeds growing on hard ground, as well as the farm equipment industry and home centers that have been struggling to meet these customer needs. Industry High evaluation is made even, use over a wide range, it is expected to be that continue to spread.

The drawings show some typical embodiments embodying the technical idea of the tiller blade for a brush cutter according to the present invention and the brush cutter according thereto.
It is the side view and bottom view showing a tilling blade. It is the side view and bottom view which show the tilling blade which inclined some claw parts to the outer side. It is the side view and bottom view which show the tilling blade which inclined some nail | claw parts inside. It is the side view and bottom view which show the tilling blade which inclined the nail | claw part alternately inside and outside. It is the side view and bottom view which show the tilling blade which provided the claw-like nail | claw part. It is a perspective view which shows the brush cutter in a disassembled state. It is a perspective view which shows the wiping machine in tilling work. It is a perspective view which shows the brush cutter which attached the scattering prevention cover.

Explanation of symbols

1 Tillage blade 2 Cutlery base
20 Coaxial hole 3 Claw section for tillage
30 Same tip
31 Same slit
32 Same slit rotation direction rear edge part 4 Anti-scattering cover
40 Coplanar wall
41 Same mounting hole
42 Detachable metal fitting 5
50 The prime mover
51 Same operation
52 Same handle 6 Gearbox
60 Same tool mounting seat
61 Same rotation axis
62 Same tightening bolt (tightening tool)
63 Protective cover
64 Same winding prevention cover
65 Same spline holder D Diameter dimension L Length dimension T Thickness dimension

Claims (5)

    The gearbox is provided at the tip of the operation rod with the base end connected to the prime mover, and the operation handle can be fastened to the rotary shaft that protrudes from the center of the blade mounting seat of the gearbox. In addition, a circular flat plate having the same diameter as the washer mold protective cover for the fastener is formed, and a cutter base seat with a shaft hole drilled through the rotary shaft is formed in the center, and the circumference of the outer peripheral edge of the cutter base seat is formed. From each of a plurality of locations balanced to each other, a tilling claw portion in which each tapered tip portion is set to a length that exceeds the thickness dimension of the protective cover and the fastening tool when fastened to the rotating shaft, Surrounding immediately around the protective cover when fastened to the rotating shaft, it is parallel to the rotating shaft when mounted on the blade mounting seat, and is integrated so as to extend and form toward the distal end of the rotating shaft. A cultivating blade for a wiping machine characterized by being made.     The gearbox is provided at the tip of the operation rod with the base end connected to the prime mover, and the operation handle can be fastened to the rotary shaft that protrudes from the center of the blade mounting seat of the gearbox. In addition, a circular flat plate having the same diameter as the washer mold protective cover for the fastener is formed, and a cutter base seat with a shaft hole drilled through the rotary shaft is formed in the center, and the circumference of the outer peripheral edge of the cutter base seat is formed. From each of a plurality of locations balanced to each other, a tilling claw portion in which each tapered tip portion is set to a length exceeding the thickness of the protective cover and the fastening tool when fastened to the rotating shaft, It is parallel to the rotating shaft when mounted on the blade mounting seat so as to surround the protective cover when tightened to the rotating shaft, and is integrated so as to extend and form toward the tip of the rotating shaft. , Each tip for every nail rest in the circumferential direction of the blade base Side, potash cutters for tilling blades, characterized in that it has as obtained by forming to the posture is slightly inclined in the distal direction.     The gearbox is provided at the tip of the operation rod with the base end connected to the prime mover, and the operation handle can be fastened to the rotary shaft that protrudes from the center of the blade mounting seat of the gearbox. In addition, a circular flat plate having the same diameter as the washer mold protective cover for the fastener is formed, and a cutter base seat with a shaft hole drilled through the rotary shaft is formed in the center, and the circumference of the outer peripheral edge of the cutter base seat is formed. From each of a plurality of locations balanced to each other, a tilling claw portion in which each tapered tip portion is set to a length exceeding the thickness of the protective cover and the fastening tool when fastened to the rotating shaft, It is parallel to the rotating shaft when mounted on the blade mounting seat so as to surround the protective cover when tightened to the rotating shaft, and is integrated so as to extend and form toward the tip of the rotating shaft. , Each tip for every nail rest in the circumferential direction of the blade base When the saw is mounted on the blade mounting seat of the brush cutter, it is formed so as to be inclined slightly in the centripetal direction as long as it is not buffered by the fastener protection cover. Tiller blade for a blower.     The gearbox is provided at the tip of the operation rod with the base end connected to the prime mover, and the operation handle can be fastened to the rotary shaft that protrudes from the center of the blade mounting seat of the gearbox. In addition, a circular flat plate having the same diameter as the washer mold protective cover for the fastener is formed, and a cutter base seat with a shaft hole drilled through the rotary shaft is formed in the center, and the circumference of the outer peripheral edge of the cutter base seat is formed. From each of a plurality of locations balanced to each other, a tilling claw portion in which each tapered tip portion is set to a length exceeding the thickness of the protective cover and the fastening tool when fastened to the rotating shaft, It is parallel to the rotating shaft when mounted on the blade mounting seat so as to surround the protective cover when tightened to the rotating shaft, and is integrated so as to extend and form toward the tip of the rotating shaft. , Each tip for every nail rest in the circumferential direction of the blade base Claws are slightly inclined in the centrifugal direction, and the tips of the claw parts other than the claw parts inclined in the centrifugal direction do not buffer the fastener protection cover when attaching the wand to the blade mounting seat of the brushing machine. A tiller blade for a brush cutter, characterized in that it is formed in an attitude slightly inclined in the centripetal direction.     The tiller blade for a brush cutter according to any one of claims 1 to 4, wherein the shaft hole of the blade base is provided with a gear box at the tip of the operation rod with the base end connected to the prime mover, and the operation rod is operated at an appropriate position in the middle. Combined so that it passes through the rotary shaft that protrudes from the center of the blade mounting seat of the gear box, and the protective cover and fasteners are attached to and detached from the rotary shaft exposed from the shaft hole. A wiping machine that is installed and tightened freely.

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