JP4022774B2 - Mowing blade device for mower - Google Patents

Mowing blade device for mower Download PDF

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JP4022774B2
JP4022774B2 JP2005130369A JP2005130369A JP4022774B2 JP 4022774 B2 JP4022774 B2 JP 4022774B2 JP 2005130369 A JP2005130369 A JP 2005130369A JP 2005130369 A JP2005130369 A JP 2005130369A JP 4022774 B2 JP4022774 B2 JP 4022774B2
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blade
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fixed blade
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JP2006280351A (en
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隆司 横山
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隆司 横山
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Description

本発明は、草刈り用草刈機の刈刃装置に関するものである。  The present invention relates to a cutting blade device of a mower for mowing.

従来、草刈機の刈刃装置の形状は、円盤状であり外周部に刈刃用チップが埋め込まれている。  2. Description of the Related Art Conventionally, the shape of a cutting blade device of a mower is a disk shape, and a cutting blade tip is embedded in the outer peripheral portion.

しかし、刈刃が露出した回転運動のため、回転刈刃に空き缶、小石などが接触して飛散したり、回転刈刃の上下左右の移動時に、地面に接触して不意の不測動作による著しい損傷、急激な磨耗が発生し回転刈刃のバランスが悪くなり危険である。また、著しい振動が発生して使用不能となる。
特開２０００−１２ 富士ロビン株式会社 ラーニー総合カタログ 平成１６年、ｐ．１ ｐ．１３ However, because of the rotary motion with the cutting blade exposed, empty cans, pebbles, etc. come into contact with the rotary cutting blade and scatter, or when the rotary cutting blade moves up, down, left and right, it touches the ground and causes significant damage due to unexpected unexpected operations. Abrupt wear occurs and the rotary blade becomes unbalanced, which is dangerous. In addition, a significant vibration occurs and it becomes unusable.
JP 2000-12 Fuji Robin Co., Ltd. Lani General Catalog 2004, p. 1 p. 13

解決しようとする問題点は、回転刈刃との接触による空き缶、小石などの飛散、回転刈刃の上下左右の移動での地面との接触による、不意の不測動作からなる著しい損傷、急激な磨耗を取り除く必要がある。  Problems to be solved include scattering of empty cans, pebbles, etc. due to contact with the rotary cutting blade, significant damage resulting from unexpected unexpected movement due to contact with the ground when the rotary cutting blade moves up and down, left and right, and rapid wear. It is necessary to remove.

したがって、本発明の目的は、刈面に刈刃装置を接触させても、回転刈刃の接触による飛散、不意の不測動作による著しい損傷、急激な磨耗を防止し、斜面での刈払機の作業動作を減少することにより、安全かつ労働の軽減を計り、経済的、合理的な草刈り等を実現する草刈機の刈刃を提供することを目的とする。  Therefore, the object of the present invention is to prevent scattering due to contact with the rotary cutting blade, significant damage due to unexpected unexpected operation, and sudden wear even when the cutting blade device is brought into contact with the cutting surface, and the operation of the brush cutter on the slope. The purpose of the present invention is to provide a mowing blade for a mowing machine that achieves economical and rational mowing by reducing the operation and thereby reducing safety and labor.

上記目的を達成するために、請求項に係る発明は、ピッチａを有するコイルばね状に形成した外枠となる内側縁面１０に受刃４を設けた固定刃２と、この固定刃２の内部にピッチｂを有するコイルばね状に形成した内枠となる外側縁面１１に、切刃５を設けた可動刃３で構成し、固定刃２の中心と可動刃３の回転中心ｆと一致させ、固定刃２に設けた受刃４と可動刃３に設けた切刃５が回転摺動接点ｃで回転摺動することにより、草木等の被切断物を挟み切るように構成し、固定刃２及び可動刃３の棒材は、受刃４又は、切刃５となる鋭角頂辺を有する湾曲面或は、平坦面を備えた断面で多角形状を呈して、固定刃２を容易に着脱交換可能に形成し或は、固定刃２の内側縁面１０と外側縁面１１との棒材の厚みとなる正面断面形状を楕円状に形成する。また、鋼性素材製の固定刃２及び可動刃３を柔軟体の軟性素材製に形成する。さらに、固定刃２が自転、或は刈刃体１に車輪等を設け自走できるように形成することを特徴とする。  In order to achieve the above object, the invention according to the claims includes a fixed blade 2 provided with a receiving blade 4 on an inner edge surface 10 serving as an outer frame formed in a coil spring shape having a pitch a, and the fixed blade 2. It is composed of a movable blade 3 provided with a cutting blade 5 on an outer edge surface 11 which is an inner frame formed in the shape of a coil spring having a pitch b inside, and coincides with the center of the fixed blade 2 and the rotation center f of the movable blade 3. The receiving blade 4 provided on the fixed blade 2 and the cutting blade 5 provided on the movable blade 3 are rotated and slid at the rotary sliding contact c, so that the object to be cut such as plants is sandwiched between the fixed blade 2 and the fixed blade 2 The bar material of the blade 2 and the movable blade 3 has a curved surface having an acute apex side to be the receiving blade 4 or the cutting blade 5 or a cross-section with a flat surface, so that the fixed blade 2 can be easily formed. It is formed so as to be detachable or replaceable, or the front cross-sectional shape that becomes the thickness of the bar of the inner edge surface 10 and the outer edge surface 11 of the fixed blade 2 is elliptical. It is formed. Further, the fixed blade 2 and the movable blade 3 made of a steel material are formed of a soft material made of a flexible material. Further, the fixed blade 2 is formed so as to be able to rotate or to be self-propelled by providing wheels or the like on the cutting blade body 1.

以上のように構成された本発明に係る草刈機用刈刃装置において、外枠の鋼性素材製からなる固定刃２のピッチａ間から、内枠の鋼性素材製からなる可動刃３のピッチｂ間に草木等が挿入され、固定刃２の受刃４と可動刃３の切刃５の回転摺動により草木等を挟み切ることができる。なお、固定刃２のピッチａと可動刃３のピッチｂが異なることにより、切刃５が固定刃２の受刃４との回転摺動接点ｃより突出しないようにすることで、受刃４と切刃５との食い込み磨耗を防止する。また、固定刃２と可動刃３となる棒材のコイルばねの巻き方向を同一方向とし、可動刃３の回転は左右どちらでも良いが、駆動連繋部材Ｇであるギアボックス或は、フレキシブルシャフト等より刈刃体１の先端方向に向って、草木等が排出できる回転にすることで、刈刃体１の先端より切断した草木等を排出することができる。また、内枠にピッチｂを有する複数の可動刃３を構成し、例えば、可動刃１が２本の場合の位相角度は１８０°、可動刃３が３本の場合の位相角度は１２０°とすることで、回転振動等のバランスを向上させ、可動刃３の切刃５を複数設けることにより、草木等をより細かく刈込みすることができる。さらに、回転摺動する可動刃３は、従来の回転円盤形刈刃より可動刃３の外形が小さいため同出力の原動機Ｍに取付けた場合、切断抵抗の大きい物或は、低回転でも草木等の切断をよりスムーズに切断することができる。尚、受刃４と切刃５は、可動刃３の回転方向に応じて、例えば固定刃２の内側縁面１０の右側に受刃４を設け、可動刃３は外側縁面１１の左側に切刃５を設けることで回転摺動接点ｃが生じる。さらに、受刃４と切刃５にチップソーを埋め込むことにより切断能力がより向上する。また、安定した回転摺動と刈刃体１の伸縮変形を防止するために固定刃２には、可動刃３への草木等の挿入の阻害とならない位置に補強材６を設け、可動刃３は円筒状或は、円筒格子状等の補強材７にコイルばね状の可動刃３を設けることで、固定刃２と可動刃３の伸縮変形を防ぐことができ、固定刃２を格子状等にすることで、刈込み後の草木等を刈刃体１先端内部からの排出でスムーズとなる。  In the cutting blade device for a mower according to the present invention configured as described above, the movable blade 3 made of a steel material of the inner frame is formed between the pitch a of the fixed blade 2 made of the steel material of the outer frame. Grass and the like are inserted between the pitches b, and the grass and the like can be sandwiched by the rotational sliding of the receiving blade 4 of the fixed blade 2 and the cutting blade 5 of the movable blade 3. The pitch a of the fixed blade 2 and the pitch b of the movable blade 3 are different so that the cutting blade 5 does not protrude from the rotational sliding contact c with the receiving blade 4 of the fixed blade 2. And the biting wear between the cutting edge 5 is prevented. Further, the winding direction of the coil spring of the bar material used as the fixed blade 2 and the movable blade 3 is the same direction, and the movable blade 3 may be rotated on either the left or right side, but a gear box or a flexible shaft as the drive connecting member G By rotating the cutting blade body 1 toward the tip of the cutting blade body 1 so that the plants and the like can be discharged, the cutting plants and the like cut from the tip of the cutting blade body 1 can be discharged. In addition, a plurality of movable blades 3 having a pitch b in the inner frame are configured. For example, the phase angle when there are two movable blades 1 is 180 °, and the phase angle when there are three movable blades 3 is 120 °. Thus, by improving the balance of rotational vibration and the like, and providing a plurality of cutting blades 5 of the movable blade 3, plants and the like can be trimmed more finely. Furthermore, since the movable blade 3 that rotates and slides has a smaller outer shape than the conventional rotary disk-shaped cutting blade, when it is attached to the motor M of the same output, it has a high cutting resistance or is not affected by low rotation or plants. Can be cut more smoothly. The receiving blade 4 and the cutting blade 5 are provided with the receiving blade 4 on the right side of the inner edge surface 10 of the fixed blade 2 according to the rotation direction of the movable blade 3, for example, and the movable blade 3 is on the left side of the outer edge surface 11. By providing the cutting edge 5, a rotational sliding contact c is generated. Furthermore, the cutting ability is further improved by embedding a tip saw in the receiving blade 4 and the cutting blade 5. Further, in order to prevent stable rotational sliding and expansion / contraction deformation of the cutting blade body 1, the fixed blade 2 is provided with a reinforcing material 6 at a position that does not hinder the insertion of plants and the like into the movable blade 3. Is provided with a coil spring-like movable blade 3 on a reinforcing member 7 such as a cylinder or a cylindrical lattice, so that the fixed blade 2 and the movable blade 3 can be prevented from being stretched and deformed. By doing so, the vegetation and the like after cutting are smoothed by discharging from the inside of the cutting blade body 1 tip.

固定刃２及び可動刃３となる鋼性素材製の断面形状は、通常円形のコイルばね状であるが受刃４又は、切刃５を設けるために鋭角頂辺を有する湾曲面或は、平坦面を備えた断面で多角形状とし、受刃４となる固定刃２の外側縁面はピッチａ内に草木等を効率よく収集できる断面形状とする。  The cross-sectional shape made of a steel material used as the fixed blade 2 and the movable blade 3 is usually a circular coil spring shape, but a curved surface having an acute apex for providing the receiving blade 4 or the cutting blade 5 or a flat surface. The cross section provided with a surface is a polygonal shape, and the outer edge surface of the fixed blade 2 serving as the receiving blade 4 is a cross sectional shape that can efficiently collect vegetation and the like within the pitch a.

固定刃２の断面形状の内側縁面１０と外側縁面１１間の厚みを、ミリ単位の刈込み高ｈの段階ごとに形成した固定刃２を数種類設け、容易に着脱交換可能な嵌合部により構成した固定刃２或は、固定刃２の正面形状を内側縁面１０は円形とし、外側縁面１１を厚みを変化させる楕円状に形成し、刈込み高ｈに応じて無段階に回転させ、地面ｇと回転摺動接点ｃ間に厚みの変化を生じさせることにより、草木等の刈面ｅとの刈込み高ｈの調整を行うことができる。  The fixed blade 2 is provided with several types of fixed blades 2 having a thickness between the inner edge surface 10 and the outer edge surface 11 of the cross-sectional shape formed at each stage of the cutting height h in millimeters. The front face shape of the fixed blade 2 or the fixed blade 2 is configured so that the inner edge surface 10 is circular, and the outer edge surface 11 is formed in an elliptical shape whose thickness changes, and is rotated steplessly according to the cutting height h, By causing a change in thickness between the ground g and the rotary sliding contact c, it is possible to adjust the cutting height h with respect to a cutting surface e such as vegetation.

固定刃２及び可動刃４を柔軟体の軟性素材製に形成することによって、起伏刈面或は、湾曲刈面等に対して刈刃体１を密着な状態にすることで、草木等の刈込み高ｈを一定にすることができる。  By forming the fixed blade 2 and the movable blade 4 from a flexible soft material, the cutting blade body 1 is brought into close contact with an undulating cutting surface or a curved cutting surface, thereby cutting a plant or the like. The height h can be made constant.

刈刃体１を大型化することにより、刈刃体１の先端の移動が困難となり、刈刃体１の伸縮変形及び駆動連繋部材Ｇの破損に繋がるので、固定刃２が自転自走或は、刈刃体１の先端に車輪を設けて自走できるようにすることで、河川等の法面の長い草木等の刈込みをすることができる。なお、可動刃３の原動機Ｍとして油圧モーター等で構成し、移動手段としては、大型重機械等に係合し移動することで作業効率が向上する。  By increasing the size of the cutting blade body 1, it becomes difficult to move the tip of the cutting blade body 1, which leads to expansion / contraction deformation of the cutting blade body 1 and breakage of the drive connecting member G. By providing a wheel at the tip of the cutting blade body 1 so that it can be self-propelled, it is possible to trim vegetation having a long slope such as a river. The prime mover M of the movable blade 3 is constituted by a hydraulic motor or the like, and the moving means is engaged with a large heavy machine or the like and moved to improve the working efficiency.

請求項１に係る発明においては、回転摺動の場合刈刃の回転周期が短いため、切断抵抗の大きい物を切断する際に、回転数の低下が大きく生じることはなく、回転摺動の速度がほぼ一定になり、摺動運動の速度がより安定するようになるので、草木等をよりスムーズに切断することができ、かつエネルギーの利用効率もより高くなるという利点がある。また、草刈姿勢は刈刃体１を持ち上げておく必要がなく、刈面ｅに対して刈刃体１を引きずる動作によって、草木等を切断することができ、刈刃体１の接触による他物の飛散、急激な磨耗を軽減し、それらからの跳ね返ったり等の危険性を除去でき、安全に作業を続行できるものである。さらに刈面ｅ或は、地面ｇに刈刃体１を接触させた状態での作業のため、振動による身体への機能障害を減少でき、長時間での作業が可能となる。  In the invention according to claim 1, since the rotational period of the cutting blade is short in the case of rotational sliding, the speed of rotational sliding does not occur greatly when cutting an article having a large cutting resistance. Becomes almost constant and the speed of the sliding motion becomes more stable, so that there is an advantage that the vegetation and the like can be cut more smoothly and the energy utilization efficiency becomes higher. The mowing posture does not require the cutting blade body 1 to be lifted up, and the operation can be performed by dragging the cutting blade body 1 with respect to the cutting surface e. This reduces the risk of splashing and sudden wear, eliminates the danger of splashing back from them, and allows the work to continue safely. Furthermore, since the cutting blade 1 or the ground g is in contact with the cutting blade 1, functional disturbances to the body due to vibration can be reduced, and the work can be performed for a long time.

請求項２に係る発明においては、固定刃２の外側縁面を鋭角或は、湾曲にすることで草木等の収集力が向上し、刈込み力を大きく強化させるものとなり、極めて能率的な作業を遂行できる。  In the invention according to claim 2, by making the outer edge surface of the fixed blade 2 an acute angle or a curve, the collection power of plants and the like is improved, and the cutting power is greatly strengthened. Can be carried out.

請求項３及び請求項４に係る発明においては、外枠の固定刃２の厚みを異なる固定刃２に交換する。或は、固定刃２を回転角度の厚みの変化により、刈込み高ｈを無段階変則に調整でることにより、刈込み過ぎ、刈込み斑を無くし、刈面ｅに刈刃体１を振り滑らすことで固定刃２の地面ｇとの厚みに応じて均等に草木等を切断することができる。  In the invention which concerns on Claim 3 and Claim 4, the thickness of the fixed blade 2 of an outer frame is replaced | exchanged for the different fixed blade 2. FIG. Alternatively, the fixed blade 2 can be fixed by swinging and sliding the cutting blade body 1 on the cutting surface e by adjusting the cutting height h to a stepless irregularity by changing the rotation angle thickness to eliminate excessive cutting and uneven cutting. The plants and the like can be cut evenly according to the thickness of the blade 2 with the ground g.

請求項５に係る発明においては、凹凸面、湾局面等さまざまな刈面形状に順応した軟性素材製の柔軟体であり、刈刃体の長さｌを交換することで、刈込み幅ｗが長くなるので作業動作を縮小できる。  In the invention which concerns on Claim 5, it is a flexible body made from the soft material which adapted to various cutting surface shapes, such as an uneven surface and a bay surface, and the cutting width w is long by exchanging the length l of a cutting blade body. Therefore, work operation can be reduced.

請求項６に係る発明においては、上記記載の請求項１及び請求項５において、刈刃体１の大型化に伴い、固定刃２が自転、或は刈刃体１に車輪等を設け油圧モーター等により自走でき、大型重機械等に係合することで、刈込み力を大きく強化させ一層円滑に草刈作業を行い、経済的、合理的な草刈が達成される。  According to a sixth aspect of the present invention, in accordance with the first and fifth aspects of the present invention, as the cutting blade body 1 increases in size, the fixed blade 2 rotates or a wheel or the like is provided on the cutting blade body 1 to provide a hydraulic motor. By engaging with a large heavy machine, etc., the mowing force is greatly enhanced and mowing is performed more smoothly, and economical and rational mowing is achieved.

以下、本発明を実施するための最良の形態を図面を参照しつつ具体的に説明する。  Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

ハンディタイプの草刈機等に使用される草刈機用刈刃装置において、図１に示すように、草刈機本体のパイプＰの後端にケーシングされて取付けられた、エンジンまたは電動機等の原動機Ｍによって、パイプＰの先端に駆動連繋部材Ｇとしてギアケース又は、フレキシブルシャフト等を介して本発明に係る草刈機用の刈刃体１を装着し回転されるようになっている。刈刃体１の固定刃２はパイプＰの先端に設けた駆動連繋部材Ｇに固着され、可動刃３は駆動連繋部材Ｇの回転軸に嵌合している。  In a cutting blade device for a mower used in a handheld type mower, etc., as shown in FIG. 1, by a prime mover M such as an engine or an electric motor mounted in a casing at the rear end of a pipe P of the mower main body. The cutting blade body 1 for a mower according to the present invention is attached to the tip of the pipe P as a drive connecting member G via a gear case or a flexible shaft and rotated. The fixed blade 2 of the cutting blade body 1 is fixed to a drive connecting member G provided at the tip of the pipe P, and the movable blade 3 is fitted to the rotation shaft of the drive connecting member G.

上記、草刈機の駆動連繋部材Ｇの先端部には、図２に示すように刈刃体１を構成する固定刃２と可動刃３が配置され、固定刃２の中心を可動刃３の回転中心と一致させて、刈刃体１となる外枠の固定刃２は、ピッチａを有するコイルばね状に形成されており、棒材の内側縁面１０に受刃４が設けられる。次に、内枠となる可動刃３は、ピッチｂを有するコイルばね状に形成されており、外側縁面１１に切刃５を設け固定刃２の内部に挿入されている。  As shown in FIG. 2, the fixed blade 2 and the movable blade 3 constituting the cutting blade body 1 are disposed at the tip of the driving connecting member G of the mower, and the center of the fixed blade 2 is rotated by the movable blade 3. The fixed blade 2 of the outer frame that becomes the cutting blade body 1 in alignment with the center is formed in a coil spring shape having a pitch a, and the receiving blade 4 is provided on the inner edge surface 10 of the bar. Next, the movable blade 3 serving as an inner frame is formed in a coil spring shape having a pitch b, and a cutting blade 5 is provided on the outer edge surface 11 and inserted into the fixed blade 2.

また、刈刃体１は図３に示すように、固定刃２の内側縁面１０に設けた受刃４と可動刃３の外側縁面１１に設けた切刃５の、ピッチａからピッチｂに草木を誘い込み、回転摺動接点ｃにおいて切断される。固定刃２のピッチａと可動刃３のピッチｂは、棒材の外径が互いのピッチより小さい外径のときは、同ピッチとならないピッチとし、例えばピッチａが１ピッチのときピッチｂは２ピッチとなるように変化させることで、可動刃３の切刃５と固定刃２の受刃４が互いのピッチに脱落することを防止する。さらに、固定刃２と可動刃３のコイルばねの巻き方向を同方向にすることにより、草木等を両ピッチ内に誘い易くなっている。また、可動刃３の回転方向は左右回転どちらでもよいが、回転方向により受刃４と切刃５の取付位置が変わり、例えばコイルばね状に巻かれた可動刃３が遠心力により、コイルばねが膨む回転方向に併せたコイルばねの巻き方向とすることで、可動刃３と固定刃２の回転摺動接点ｃがより密着する。さらに、例えばコイルばね状に巻かれた可動刃３が、切断された草木等を可動刃３の内部より、刈刃体１の先端より排出できる回転方向が望ましく、草木等による刈刃体１の目ずまりを防止する。  Further, as shown in FIG. 3, the cutting blade body 1 has a pitch a to a pitch b of the receiving blade 4 provided on the inner edge surface 10 of the fixed blade 2 and the cutting blade 5 provided on the outer edge surface 11 of the movable blade 3. The vegetation is guided into the slab and cut at the rotational sliding contact c. The pitch a of the fixed blade 2 and the pitch b of the movable blade 3 are not the same pitch when the outer diameter of the bar is smaller than each other. For example, when the pitch a is one pitch, the pitch b is By changing the pitch to 2 pitches, it is possible to prevent the cutting blade 5 of the movable blade 3 and the receiving blade 4 of the fixed blade 2 from dropping off to each other's pitch. Furthermore, by making the winding direction of the coil springs of the fixed blade 2 and the movable blade 3 the same direction, it is easy to invite vegetation and the like into both pitches. The rotating direction of the movable blade 3 may be either left-right rotation, but the mounting position of the receiving blade 4 and the cutting blade 5 varies depending on the rotating direction. For example, the movable blade 3 wound in a coil spring shape is subjected to a centrifugal force, and the coil spring. By making the winding direction of the coil spring combined with the rotation direction in which the blade swells, the rotary sliding contact c of the movable blade 3 and the fixed blade 2 is more closely attached. Further, for example, the rotational direction in which the movable blade 3 wound in the shape of a coil spring can discharge the cut vegetation or the like from the inside of the movable blade 3 from the tip of the cutting blade body 1 is desirable. Prevent clogging.

図４は、複数の可動刃３を構成する単線図であり、（Ａ）図は２本の可動刃３ａと３ｂの位置関係を位相角度１８０°として、（Ｂ）図は３本の可動刃３ｃと３ｄと３ｅの位置関係を位相角度１２０°とすることで、回転振動等を減少させ草木等をより細かく切断する。  FIG. 4 is a single line diagram constituting a plurality of movable blades 3, (A) FIG. 4 shows the positional relationship between the two movable blades 3 a and 3 b as a phase angle of 180 °, and (B) FIG. 4 shows three movable blades. By setting the positional relationship between 3c, 3d, and 3e to a phase angle of 120 °, rotational vibration and the like are reduced, and plants and the like are cut more finely.

固定刃２及び可動刃３は、図６に示すように、好ましくは高度が高い例えば超合金製等の形成されており、例えばチップソー等の所定形状の受刃４または切刃５が形成されている。また、固定刃２及び可動刃３の断面形状を例示的に説明すると、（Ａ）（Ｂ）（Ｃ）（Ｄ）にあっては、回転摺動接点ｃにおいて縁面に取付けられた鋭角頂辺となる受刃４と切刃５が互いに交差する。（Ａ）（Ｂ）（Ｃ）は固定刃２の外側縁面１２の断面を、草木等の収集を誘い込み易い面となっている。いずれにしてもこの固定刃２及び可動刃３の棒材の断面形状は、特に限定されるものではく、刈面上で受刃４と切刃５が回転摺動することによって、草木等を刈込み切断させる構成になっていれば良いものである。  As shown in FIG. 6, the fixed blade 2 and the movable blade 3 are preferably formed of a high altitude such as a superalloy, for example, and a receiving blade 4 or a cutting blade 5 having a predetermined shape such as a tip saw is formed. Yes. The cross-sectional shapes of the fixed blade 2 and the movable blade 3 will be described by way of example. In (A), (B), (C), and (D), the acute apex attached to the edge surface at the rotational sliding contact c. The receiving blade 4 and the cutting blade 5 serving as sides intersect each other. (A), (B), and (C) are the surfaces of the outer edge surface 12 of the fixed blade 2 that are easy to invite collection of plants and the like. In any case, the cross-sectional shape of the bar of the fixed blade 2 and the movable blade 3 is not particularly limited, and the receiving blade 4 and the cutting blade 5 are slid and slid on the cutting surface. What is necessary is just to become the structure made to cut and cut.

固定刃２及び可動刃３の補強材の形状を例示的に図５で説明すると、固定刃２の補強材形状は、固定刃２及び可動刃３の両ピッチへの草木等の進入の阻害とならない刈刃体１の進行方向の反対側部又は上部に設ける。他に例えば円筒形格子状を固定刃２と兼ねる補強材として設ける。また、可動刃３は円筒状の補強材１３の外側周面にコイルばね状の可動刃３を設ける。或は、草木等の刈込み後の排出をよくするために、円筒格子状等の補強材１３を設けることで刈刃体１の伸縮変形を防止する。  The shape of the reinforcing material of the fixed blade 2 and the movable blade 3 will be described by way of example with reference to FIG. 5. The shape of the reinforcing material of the fixed blade 2 is obstruction of entry of plants and the like into both pitches of the fixed blade 2 and the movable blade 3. It is provided on the opposite side or upper part of the moving direction of the cutting blade body 1 that does not become. In addition, for example, a cylindrical lattice shape is provided as a reinforcing material that also serves as the fixed blade 2. The movable blade 3 is provided with a coil spring-like movable blade 3 on the outer peripheral surface of a cylindrical reinforcing member 13. Or, in order to improve the discharge after cutting of plants and the like, the reinforcing member 13 having a cylindrical lattice shape is provided to prevent the cutting blade body 1 from being stretched and deformed.

また、図２及び図５の刈刃体１の長さｌを刈面ｅの刈込み幅ｗに合わせて、刈刃体１を数種類設け駆動連繋部材Ｇとして、例えばギアケース或はフレキシブルシャフト等において、例えばカップリング又はネジ止め等で嵌合部より、容易に交換可能に構成することで、従来の円盤型回転刃或はチップソーに比べて、一動作において刈刃体１の長ｌに応じて、数倍の刈面ｅを刈込み切断できる。  Further, the cutting blade body 1 shown in FIGS. 2 and 5 is made to have a length l corresponding to the cutting width w of the cutting surface e, and several kinds of cutting blade bodies 1 are provided as drive connecting members G, for example, in a gear case or a flexible shaft. In accordance with the length l of the cutting blade body 1 in one operation as compared with a conventional disk-type rotary blade or tip saw, for example, by being configured to be easily exchangeable from the fitting portion by coupling or screwing, for example. The cutting surface e several times larger can be cut and cut.

図７は、本発明の固定刃２の別の実施例を示す正面断面図である。この実施例では固定刃２の受刃４を設けた内側縁面１０の形状は円形とし、外側縁面１１の形状を内側縁面１０と外側縁面１１との厚みを回転変化できる楕円形状に形成し、固定刃２の中心を可動刃３の回転中心ｆと一致させ、無段階で正逆回転ｄでき例えば刈込み高ｈは、ｈ１ｈ２ｈ３ｈ４と９０°づつ回転させることにより、地面ｇ間との厚みを変化させることで刈込み高ｈの調整を行うことができる。また、図１記載の刈刃体１の先端又は、刈刃体１の駆動連繋部材Ｇ側の後端或は、刈刃体１の両端に、上記記載の無段階の刈込み高調整機能を有する枠体で、刈刃体１を覆う構成において、草木等の刈込み高ｈの調整ができる。FIG. 7 is a front sectional view showing another embodiment of the fixed blade 2 of the present invention. In this embodiment, the shape of the inner edge surface 10 provided with the receiving blade 4 of the fixed blade 2 is circular, and the shape of the outer edge surface 11 is an elliptical shape in which the thicknesses of the inner edge surface 10 and the outer edge surface 11 can be changed. Formed, the center of the fixed blade 2 coincides with the center of rotation f of the movable blade 3, and can be rotated forward and backward in a stepless manner. For example, the cutting height h is rotated by 90 ° with h 1 h 2 h 3 h 4 by 90 °. The cutting height h can be adjusted by changing the thickness between the ground g. 1 has the stepless trimming height adjusting function described above at the tip of the cutting blade body 1 shown in FIG. 1 or the rear end of the cutting blade body 1 on the side of the drive connecting member G or both ends of the cutting blade body 1. In the configuration in which the cutting blade body 1 is covered with the frame body, the cutting height h of plants and the like can be adjusted.

図８は、湾曲刈面或は、起伏刈面等において、刈刃体１を長尺に形成し、柔軟体の軟性素材製にて構成する。例えば可動刃３内部側にピッチを有しないコイルばね状の内部材に可動刃３となるピッチｂを有するコイルばね状を設けることにより、長い刈面ｅに柔軟な刈刃体１を馴染ませることができる。  In FIG. 8, the cutting blade body 1 is formed in a long shape on a curved cutting surface or an undulating cutting surface, and is made of a soft material made of a flexible body. For example, by providing a coil spring shape having a pitch b to be the movable blade 3 on a coil spring-shaped inner member having no pitch on the inner side of the movable blade 3, the flexible cutting blade body 1 can be adapted to the long cutting surface e. Can do.

図９は、刈刃体１の先端及び後端に自転、自走できる車輪１３等を設け、油圧モーター等により駆動し、大型重機械等により係合して、河川等の法面の長い草木等の刈込み能力が増大する一方、刈込み動作を縮小することができる。  FIG. 9 shows a long-sloped plant such as a river by providing wheels 13 or the like that can rotate and run at the front and rear ends of the cutting blade body 1, driven by a hydraulic motor or the like, and engaged by a large heavy machine or the like. While the cutting ability such as the above is increased, the cutting action can be reduced.

本発明を実施するための最良の形態における使用状態の側面図である。  It is a side view of the use condition in the best form for implementing this invention. 本発明の一実施例に用いられる固定刃と可動刃の一部分単線による（Ａ）は側面図（Ｂ）正面図である。  (A) by the partial single line of the fixed blade and movable blade used for one Example of this invention is a side view (B) front view. 同上の要部断面図である。  It is principal part sectional drawing same as the above. 同上の複数の可動刃を構成する（Ａ）正面及び（Ｂ）側面の単線図である。  It is a single line figure of (A) front and (B) side which constitute a plurality of movable blades same as the above. 同上の補強材を設けた（Ａ）側面及び（Ｂ）正面の要部断面図である。  It is principal part sectional drawing of the (A) side surface and (B) front which provided the reinforcing material same as the above. 同上にてこれの（Ａ）（Ｂ）（Ｃ）（Ｄ）夫々は固定刃及び可動刃の形態を示す要部断面図である。  In the above, (A), (B), (C), and (D) are cross-sectional views of the main part showing forms of the fixed blade and the movable blade. 本発明の他の実施例に用いられる正面の要部断面図である。  It is principal part sectional drawing of the front used for the other Example of this invention. 本発明の他の実施例に用いられる側面図である。  It is a side view used for the other Example of this invention. 本発明の他の実施形態に用いられる側面図である。  It is a side view used for other embodiments of the present invention.

符号の説明Explanation of symbols

Ｍ 原動機 Ｈ ハンドル
Ｐ パイプ Ｇ 駆動連繋部材
ａ 固定刃ピッチ ｂ 可動刃ピッチ
ｃ 回転摺動接点 ｄ 回転方向
ｅ 刈面 ｆ 回転中心
ｇ 地面 ｈ 刈込み高 ｈ１ｈ２ｈ３ｈ４
ｌ 刈刃体の長さ
１ 刈刃体 ２ 固定刃
３ 可動刃 ４ 受刃
５ 切刃 ６ 固定刃の補強材
７ 可動刃の補強材 ８ 固定刃の嵌合部
９ 可動刃の嵌合部 １０ 固定刃の内側縁面
１１ 可動刃の外側縁面 １２ 固定刃の外側縁面
１３ 車輪 １４ 固定刃の刈込み高調整方向M Motor H Handle P Pipe G Drive connecting member a Fixed blade pitch b Movable blade pitch c Rotating sliding contact d Rotating direction e Cutting surface f Center of rotation g Ground h Cutting height h 1 h 2 h 3 h 4
1 Length of cutting blade body 1 Cutting blade body 2 Fixed blade 3 Movable blade 4 Receiving blade 5 Cutting blade 6 Fixed blade reinforcing material 7 Movable blade reinforcing material 8 Fixed blade fitting portion 9 Movable blade fitting portion 10 Inner edge surface 11 of the fixed blade Outer edge surface of the movable blade 12 Outer edge surface 13 of the fixed blade 13 Wheel 14 Cutting height adjustment direction of the fixed blade

Claims (6)

ピッチを有するコイルばね状に形成した外枠の内側縁面に、受刃を設けた固定刃と、この固定刃の内部にピッチを有するコイルばね状に形成した内枠の外側縁面に、切刃を設けた可動刃で構成し、固定刃の中心と可動刃の回転中心を一致させ、可動刃に設けた切刃が固定刃の受刃と回転摺動することを特徴とする草刈機用刈刃装置。  A fixed blade provided with a receiving blade on the inner edge surface of an outer frame formed in a coil spring shape having a pitch, and an outer edge surface of an inner frame formed in a coil spring shape having a pitch inside the fixed blade. For a mowing machine comprising a movable blade provided with a blade, the center of the fixed blade and the rotation center of the movable blade are aligned, and the cutting blade provided on the movable blade rotates and slides with the receiving blade of the fixed blade Cutting blade device. 固定刃及び可動刃となる棒材は、受刃又は切刃となる鋭角頂辺を有する湾曲面或は、平坦面を備えた断面で多角形状を呈していることを特徴とする請求項１記載の草刈機用刈刃装置。  The bar material used as a fixed blade and a movable blade has a curved surface having an acute apex side serving as a receiving blade or a cutting blade, or a polygonal shape in a cross section having a flat surface. Blade device for grass mowers. 固定刃を容易に着脱交換可能な嵌合部を形成することを特徴とする請求項１記載の草刈機用刈刃装置。  The mowing blade device for a mower according to claim 1, wherein a fitting portion capable of easily attaching and detaching the fixed blade is formed. 固定刃の外側縁面と内側縁面との厚みを変化させ、正面断面形状を楕円状に形成することを特徴とする請求項１記載の草刈機用刈刃装置。  The cutting blade device for a mower according to claim 1, wherein the thickness of the outer edge surface and the inner edge surface of the fixed blade is changed to form an elliptical front cross-sectional shape. 固定刃及び可動刃の材質を柔軟体の軟性素材製に形成することを特徴とする請求項１記載の草刈機用刈刃装置。  The cutting blade device for a mower according to claim 1, wherein the material of the fixed blade and the movable blade is made of a soft material of a flexible body. 固定刃が自転自走或は、刈刃体の先端に車輪を設けて自走できるように形成することを特徴とする請求項１記載の草刈機用刈刃装置。  2. The cutting blade device for a mower according to claim 1, wherein the fixed blade is self-propelled for rotation or is provided so as to be capable of self-propelling by providing a wheel at the tip of the cutting blade body.
JP2005130369A 2005-03-30 2005-03-30 Mowing blade device for mower Expired - Fee Related JP4022774B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7272526B1 (en) 2022-02-08 2023-05-12 正孝 都築 Weeding units and weeders

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2491384A (en) * 2011-06-02 2012-12-05 Ken Roberts Cutter for a lawnmower
JP6760635B2 (en) * 2016-10-18 2020-09-23 正孝 都築 Weeding unit and brush cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7272526B1 (en) 2022-02-08 2023-05-12 正孝 都築 Weeding units and weeders
JP2023115792A (en) * 2022-02-08 2023-08-21 正孝 都築 Weeding unit and weeder

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