JPH09103164A - Cover of rotation blade for mowing - Google Patents
Cover of rotation blade for mowingInfo
- Publication number
- JPH09103164A JPH09103164A JP7289292A JP28929295A JPH09103164A JP H09103164 A JPH09103164 A JP H09103164A JP 7289292 A JP7289292 A JP 7289292A JP 28929295 A JP28929295 A JP 28929295A JP H09103164 A JPH09103164 A JP H09103164A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- rotary
- item
- disk
- rotary blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Harvester Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転する耐衝撃材
料が障害物衝突時の回転刃の刃飛びから作業者を守るだ
けでなく、回転刃に多くの雑草を切断させるための集め
る目的の刃としても機能できるなど、作業時の安全性を
高めながら同時に作業上の不都合を解消させることが可
能となる農作業用の草刈円盤用回転カバーに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention not only protects a worker from the blade jumping of a rotary blade at the time of collision of an obstacle with a rotating impact-resistant material, but also has a purpose of collecting the weeds so that the rotary blade can cut many weeds. The present invention relates to a rotary cover for agricultural mowing disks, which can function as a blade and at the same time can improve work safety and eliminate work inconvenience.
【０００２】[0002]
【従来の技術】従来、草刈用の回転円盤には様々な形状
の回転刃が存在する。例えば様々な形状の鉄板を焼き入
れさせただけのものや、最近主流となってきた鋸状の円
盤の先端に硬質金属のチップを溶着させたチップソーな
どが存在する。2. Description of the Related Art Conventionally, rotary blades for cutting grass have rotary blades of various shapes. For example, there are those in which iron plates of various shapes are simply quenched, and there are tip saws in which a hard metal tip is welded to the tip of a saw-shaped disk which has recently become mainstream.
【０００３】[0003]
【発明が解決しようとする課題】しかし、作業時に例え
ば石やブロックに回転刃をぶつけると刃先が変形し曲が
ったり亀裂が入ったりする現象が起こり、そのまま知ら
ずに使用しているとしまいに衝撃によって割れて刃飛び
現象が発生する。この刃飛び現象は非常に危険である
為、回転刃の製造には材料段階から細心の注意が必要で
あるが、最近の価格破壊とコストダウン技術によってチ
ップソーの回転刃が急速に普及してきた。このチップソ
ーは先端のチップが小さいうえに鑞付け技術で溶着させ
る方法であるため衝撃に非常に弱く、硬質チップが飛散
してしまうという問題点がある。最近では飛散しにくい
チップの埋め込み技術が向上したため初期ほど刃飛びの
事件は聞かれなくなったが、それでも最近、製造物損害
賠償制度のＰＬ法が施行されたことにより、製造者側の
製品が万一に起こす事故から作業者を守る物が必要であ
り、それは同時に製造者側をも賠償から守ることにもな
る。However, when a rotary blade hits a stone or a block during work, for example, the blade tip is deformed, causing a phenomenon of bending or cracking. It breaks and a blade skipping phenomenon occurs. Since this blade skipping phenomenon is extremely dangerous, great care must be taken in manufacturing the rotary blade from the material stage. However, due to recent price destruction and cost reduction techniques, the rotary blade of the tip saw has rapidly spread. This tip saw has a small tip, and since it is a method of welding using a brazing technique, it is very vulnerable to impact and has a problem in that hard tips are scattered. Recently, as the technology for embedding chips that are difficult to scatter has improved, the case of blade skipping is not heard as early as in the early days, but the PL method of the product damages compensation system has recently been enforced, so that the products of the manufacturer side In the first place, there is a need for something that protects workers from accidents, which at the same time protects the manufacturer from compensation.
【０００４】[0004]
【課題を解決するための手段】このように使用者側から
も安全に草刈作業ができる一方、製造者側からもＰＬ法
の適用を少しでも減少させるために絶対必要となる本発
明の構造を図面とともに以下に詳述すると、請求項１と
して、回転円盤１を回転刃２に載せて使用する構造とし
て、この場合の回転円盤１は作業者と回転刃２とを隔て
る媒介物として存在する構造とした。また請求項２とし
て、回転円盤１は塩化ビニールやナイロンやプラスチッ
クなどの石油化成材料や炭素繊維やＦＲＰなどの繊維合
成材料や圧縮紙などの衝撃に対して破損しない材料で構
成する構造とした。また請求項３として、回転円盤１は
作業時の回転刃２からの石や欠け刃などの異物の跳ね飛
ばしを作業者側に飛ばさない為の防護カバーとして作用
する構造とした。また請求項４として、回転円盤１の形
状を回転刃２の刃先部８と略・同一形状として重ね合わ
せて一体化させた。また請求項５として、回転円盤１は
重ね合わせた回転刃２の刃先部８先端とは離れて浮いた
状態となって空間部７を有する構造とすることで、空間
部７が回転円盤１の形状や回転刃２との僅かな大きさの
差をも吸収した防護カバーとして作用する構造として、
しかも回転刃２の切れ味に影響を与えない構造にでき
る。また請求項６として、回転円盤１の一部分の先端部
分が回転刃２の刃先部８先端よりも突出する構造とする
ことで、回転円盤１の一部分が突出した分だけ石などの
異物に衝突する場合に必ず回転円盤１の該突出する一部
分が刃より先に衝突することで、刃先部８と異物が容易
にぶつからない刃先部防護構造とした。また請求項７と
して、回転円盤１の一部分の先端部分が回転刃の刃先部
８先端よりも突出しながら、回転円盤１の刃先部８形状
が回転軸芯の放射方向より回転方向へ傾角をもたせた形
状とすることで、該突出した回転円盤１の傾角によって
草木をよせ集めて逃げない構造として、回転刃２に刈り
取らせる構造とした。また請求項８として、回転円盤１
と回転刃２との重ね合わせた間の空間部７に刃先部８を
形成させることで、作業中の草木の絡み付きを空間部７
の刃先部８が防止する絡み防止刃５として働く絡み付き
防止構造とした。As described above, the structure of the present invention which is absolutely necessary from the manufacturer side to reduce the application of the PL method even while the grass cutting work can be safely performed from the user side. Detailed description will be given below with reference to the drawings. As claim 1, as a structure in which a rotary disk 1 is mounted on a rotary blade 2, the rotary disk 1 in this case is present as a medium for separating an operator and the rotary blade 2. And Further, as the second aspect, the rotating disk 1 is constituted by a petroleum chemical material such as vinyl chloride, nylon or plastic, a fiber synthetic material such as carbon fiber or FRP, or a material which is not damaged by impact such as compressed paper. Further, as the third aspect, the rotary disk 1 has a structure which acts as a protective cover for preventing the splashing of foreign matters such as stones and chipped blades from the rotary blade 2 at the time of working to the worker side. Further, as a fourth aspect, the shape of the rotary disk 1 is made substantially the same as the blade tip portion 8 of the rotary blade 2 so as to be superposed and integrated. Further, according to claim 5, the rotary disk 1 has a space portion 7 in a state of being floated apart from the tip of the blade tip portion 8 of the rotary blades 2 that are overlapped with each other. As a structure that acts as a protective cover that absorbs even slight differences in shape and size with the rotary blade 2,
Moreover, a structure that does not affect the sharpness of the rotary blade 2 can be obtained. Further, according to claim 6, the tip portion of a part of the rotary disk 1 projects from the tip of the blade edge portion 8 of the rotary blade 2, so that a part of the rotary disk 1 collides with foreign matters such as stones. In this case, the protruding portion of the rotating disk 1 always collides with the blade ahead of the blade, so that the blade tip 8 and the foreign matter do not easily collide with each other. Further, according to claim 7, the tip end portion of a part of the rotary disc 1 projects from the tip end of the blade tip portion 8 of the rotary blade, and the shape of the blade tip portion 8 of the rotary disc 1 has an inclination in the rotational direction from the radial direction of the rotary shaft core. By adopting a shape, the rotary blade 2 cuts a structure in which the plants are gathered together by the angle of inclination of the protruding rotary disc 1 so as not to escape. Further, as claim 8, the rotating disk 1
By forming the blade tip portion 8 in the space portion 7 between the overlapping of the rotary blade 2 and the rotary blade 2, the entanglement of the vegetation during work can be prevented by the space portion 7.
The entanglement-preventing structure works as the entanglement-preventing blade 5 that is prevented by the blade tip portion 8 of the above.
【０００５】[0005]
【発明の実施の形態】本発明で全く新しく提案する回転
円盤１の作用は、例えば従来方法であれば複数枚刃先部
を焼き入れした回転刃２や、チップソー等の回転刃２を
そのまま草刈機４の取付部９へ取り付けさせただけで草
刈作業をおこなわせていたのに対して、本発明では新た
に回転円盤１を回転刃２に載せて一体化させることで回
転刃２と一緒に回転円盤１も回転するものとする。BEST MODE FOR CARRYING OUT THE INVENTION The operation of the rotary disc 1 proposed by the present invention is, for example, a conventional method in which a rotary blade 2 having a plurality of blade tips hardened or a rotary blade 2 such as a tip saw is used as it is as a mower. While the mowing work was performed only by attaching the rotary disc 1 to the attaching portion 9 of No. 4, in the present invention, the rotary disc 1 is newly placed on the rotary blade 2 so that the rotary disc 1 rotates together with the rotary blade 2. The disk 1 also rotates.
【０００６】したがって例えば該一体化手段の方法にも
回転円盤１の回転軸芯に回転刃２同様の中心留め穴部３
を形成させて回転刃２の取り付け時に一緒に本発明をセ
ットする方法でも良いし、または回転刃２自体の円盤盤
面に穴を複数開けて、該穴を利用して回転円盤１と回転
刃２とをリベットやネジなどの接合部品で留め合わせて
一体化させる方法や、または本図面第２図のような金属
などの媒介物の回転円盤１｀に軟質材でできた回転円盤
１を固着させて一体化させた製品を一式まとまった回転
円盤１と解釈させて前述回転刃２盤面の穴に固着させた
り、前述媒介物に形成した中心留め穴部３と回転刃２の
中心留め穴部３とを留め併せて一緒に回転させる方法な
どがある。Therefore, for example, in the method of the integrating means, the center retaining hole portion 3 similar to the rotary blade 2 is provided on the rotary shaft core of the rotary disc 1.
Alternatively, the present invention may be set together when the rotary blade 2 is attached, or a plurality of holes may be formed in the disk surface of the rotary blade 2 itself, and the rotary disk 1 and the rotary blade 2 may be used by utilizing the holes. And the method of integrating them with joint parts such as rivets and screws, or fixing the rotary disk 1 made of soft material to the rotary disk 1'of a medium such as metal as shown in Fig. 2 of this drawing. The integrated product is interpreted as a set of rotary discs 1 and fixed to the holes on the surface of the rotary blade 2 described above, or the central fastening hole 3 formed on the medium and the central fastening hole 3 of the rotary blade 2 are formed. There is a method of fastening and rotating together.
【０００７】また回転円盤１を請求項２のような構造と
することで、回転円盤１自体が破損することが無いだけ
でなく、さらに石などの障害物により万一回転刃が欠け
て飛散した場合でも、回転円盤１によって飛散を防止す
る働きがあり、よって作業者は安全に作業がおこなえ
る。しかも例えば回転円盤１の材質を透明なものにする
ことで、作業者はこれまで回転刃２のみを回転させてい
た時のように回転刃２が透けて見えて作業時の違和感が
ないものとなるし、また回転円盤１を蛍光塗料材料で形
成させれば夕方などの薄暗い場所などでも回転刃２の位
置を確認しながら作業ができるため安全なものとなる。Further, since the rotary disc 1 has the structure as defined in claim 2, not only the rotary disc 1 itself is not damaged, but also the rotary blade is broken due to an obstacle such as a stone and scattered. Even in such a case, the rotating disc 1 has a function of preventing the scattering, and thus the worker can safely perform the work. In addition, for example, by making the material of the rotary disk 1 transparent, the operator can see through the rotary blade 2 as when rotating only the rotary blade 2 so that there is no sense of discomfort during work. If the rotating disk 1 is made of a fluorescent paint material, the operation can be performed while checking the position of the rotating blade 2 even in a dark place such as in the evening, which is a safe operation.
【０００８】以上の働きを請求項３として、異物の跳ね
飛ばしを作業者側に飛ばさない為の防護カバーとして作
用することになる。また回転円盤１のより具体的な形状
としては例えば請求項４のように、回転円盤１の形状を
回転刃２の刃先部８と略・同一形状として重ね合わせて
使用することで、回転円盤１の円周形状は回転刃２の刃
先部８の切れ味を損ねることなく、しかも刃先部８の刃
欠けによる刃飛びを防止できるため、回転刃２の万一の
場合の製造上の強度不足など欠点のカバーだけはできる
が、石などの障害物を飛ばした場合に作業者を守ること
ができない問題点を持つ。With the above-mentioned function as the third aspect, the present invention functions as a protective cover for preventing the splashing of foreign matter from being blown to the operator side. Further, as a more specific shape of the rotary disk 1, for example, by using the shape of the rotary disk 1 and the cutting edge portion 8 of the rotary blade 2 having substantially the same shape, the rotary disk 1 is overlapped and used. Since the circumferential shape of the rotary blade 2 does not impair the sharpness of the blade tip portion 8 of the rotary blade 2 and can prevent the blade from skipping due to the chipping of the blade tip portion 8, there is a drawback such as insufficient manufacturing strength in the event of the rotary blade 2. However, it has a problem that the worker cannot be protected when an obstacle such as a stone is blown.
【０００９】また本発明の回転刃２との取り付け方法
は、回転刃２に回転円盤１を単純に載せて取付部９で締
め付けて一体化させたものでも良いし、または回転刃２
と回転円盤１とを接着剤などで張り合わせても良いし、
場合によってはリベットなどで該両者を留め合わせて予
め一体化した製品を取付部９でセットするものでも良
く、このような接着剤やリベットで一体化する場合には
発明の名称が「カバーを一体化させた草刈回転刃」であ
るとも言え、特殊な回転刃として他社が発売するもので
あっても本発明の権利範囲であると言える。The method of attaching the rotary blade 2 of the present invention may be one in which the rotary disk 1 is simply placed on the rotary blade 2 and tightened at the attachment portion 9 to be integrated, or the rotary blade 2
The rotating disk 1 and the rotating disk 1 may be bonded together with an adhesive,
Depending on the case, a product in which the both are fastened together with a rivet or the like is set in advance and the product may be set at the mounting portion 9. When the product is integrated with such an adhesive or a rivet, the title of the invention is "the cover is integrated. It can be said that it is a "cut grass blade rotary blade", and even if it is sold as a special rotary blade by another company, it is within the scope of the present invention.
【００１０】また請求項５のように、回転刃２と回転円
盤１の間に空間部７を有する構造とすることで、回転円
盤１の大きさが回転刃２と完全に一致しなくとも、空間
部７の隙間が存在することによって回転円盤１は回転刃
２の切断作用を妨害しない物となり、回転刃２の切れ味
に影響を与えない構造にできる。しかも切断作業中に刃
欠けや石飛ばしが発生しても回転円盤にぶつかるのみで
作業者には全く安全である。According to the present invention, the space 7 is provided between the rotary blade 2 and the rotary disc 1 so that the size of the rotary disc 1 does not completely match the size of the rotary blade 2. Due to the existence of the space in the space 7, the rotary disc 1 does not interfere with the cutting action of the rotary blade 2, and the structure in which the sharpness of the rotary blade 2 is not affected can be obtained. Moreover, even if a chip or a stone is thrown off during the cutting work, it only hits the rotating disk and is completely safe for the operator.
【００１１】以上のような構造に請求項６の特徴を加え
ると、回転刃２よりも回転円盤１の一部分が突出するこ
とで、作業中に石など障害物に最初に衝突する場合には
回転軸芯から最も遠い部分が最初にぶつかるために、回
転円盤１の突起部分が回転刃２の先端よりも最初に衝突
することになり、刃先部８が障害物に衝突することは無
くなり安全な刃先部防護構造にできる。このような回転
円盤１の作用は異物の飛ばし片を防護する単なるカバー
としての役割だけでなく、刃先部８自体をも障害物から
守って刃先部８自体の刃欠け飛ばし現象自体をも起こさ
せないという積極的な意味をもつ防護カバーにできる。When the feature of claim 6 is added to the above-mentioned structure, a part of the rotary disk 1 projects from the rotary blade 2 so that the rotary disk 1 rotates when it first collides with an obstacle such as a stone during work. Since the part farthest from the axis first hits, the protruding part of the rotating disk 1 will collide with the tip of the rotary blade 2 first, and the cutting edge portion 8 will not collide with obstacles, so that the cutting edge is safe. Partial protection structure is possible. The action of the rotating disk 1 not only serves as a cover for protecting the flying pieces of foreign matter, but also protects the cutting edge portion 8 itself from obstacles and does not cause the cutting edge flying phenomenon itself of the cutting edge portion 8 itself. It can be a protective cover with a positive meaning.
【００１２】さらに請求項７のようにすることで、回転
力によってに回転方向へ傾角をもたせて突出した回転円
盤１が回転刃２で切断する草木をよせ集めて逃げないよ
うにして、回転刃２に刈り取らせることができて、作業
時の草木の回転物からの刃逃げを防止して回転刃２の
「切れ味」を高めることができる作用がある。しかも回
転円盤１自体は請求項６のような障害物に対して安全な
刃先部防護構造でもある。Further, according to the seventh aspect, the rotary disk 1 which is inclined by the rotational force in the direction of rotation to project in the direction of rotation prevents the grass to be cut by the rotary blade 2 from gathering and escaping. 2 has the effect of being able to mow the blade, preventing the blade from escaping from the rotating object of the vegetation during work, and increasing the "sharpness" of the rotating blade 2. In addition, the rotary disk 1 itself is also a blade edge protection structure that is safe against obstacles as in claim 6.
【００１３】さらに請求項８のようにすることで、回転
円盤１と回転刃２との間に形成させた刃先部８によっ
て、作業中の草木の絡み付きを切断する絡み防止刃５と
して作用するだけでなく、絡み防止刃５は作業者側から
は回転円盤１を隔てた反対面に設置されているために不
用意に該絡み付き防止の刃先部８に触れられない構造で
あるためにも安全な構造である。また絡み防止刃５は刃
先部８全く同じ形状でも良いし異なった形状でも良い。Further, according to claim 8, the blade tip portion 8 formed between the rotary disk 1 and the rotary blade 2 only functions as the entanglement preventing blade 5 for cutting the entanglement of the vegetation under work. In addition, since the entanglement prevention blade 5 is installed on the opposite surface of the operator from the rotary disk 1 side, it is a safe structure because the entanglement prevention blade edge 8 cannot be inadvertently touched. It is a structure. The entanglement preventing blades 5 may have the same shape or different shapes.
【００１４】これが例えば、従来存在する製品で金属円
盤状の回転刃２の通常透かし穴などが形成されている盤
面に絡み付き防止の刃物が形成されたものがあるが、通
常の草刈作業では草木が回転軸に絡み付く現象が必ず発
生するが、この絡み付きの度合いは蔓などの草木の種類
や枯れ草かどうかによっても異なり、場合によっては該
絡み付き防止の刃先部８では切断できずに該刃へ絡み付
く現象も起こり得る。このような場合は必ず作業者が手
で絡み付きをほぐして取り払うが、容易に作業者の手が
届く状況である該従来の絡み付き防止用の刃先部８は、
往々にして草刈機４のスロットルが戻されていない場合
もあり、該刃先部８で手を切ったり指を落とすなどの現
実もあり、非常に危険なものであったが、本発明のよう
に作業者はカバーとなる回転円盤１の反対面の空間部７
にサンドイッチ状に中に挟み込んだ絡み防止刃５であれ
ば作業者は草刈機４を装着したままで回転円盤１の反対
面の空間部７にまで手を届かすことができないため安全
であるし、草刈機４を取り降ろして絡み付きをほぐすと
いう余裕も生まれる。とくに回転円盤１がビニールなど
の軟材質でできていれば不用意に回転中に手を出しても
指を切断されるなどの事故は起こらないものとなるし、
また該絡み防止刃が形成された回転刃２の製品に本発明
の請求項２までの特徴の回転円盤１を後付けさせるよう
なにしても良い。For example, there is a conventionally existing product in which a blade for preventing entanglement is formed on a board surface on which a metal plate-like rotary blade 2 is usually formed with a watermark hole, but in the normal mowing work, vegetation is removed. The phenomenon of entanglement with the rotating shaft always occurs, but the degree of this entanglement varies depending on the type of vegetation such as vines and whether or not it is dead grass, and in some cases it cannot be cut by the blade tip portion 8 for preventing the entanglement and entangles with the blade. Can also happen. In such a case, the operator always unravels and removes the entanglement by hand, but the conventional entanglement-preventing blade edge portion 8 which is easily accessible by the operator is
In some cases, the throttle of the mower 4 is not returned in some cases, and there is a reality such as cutting a hand or dropping a finger at the blade portion 8, which is very dangerous, but like the present invention. The operator is to cover the space 7 on the opposite side of the rotating disk 1
If the entanglement prevention blade 5 is sandwiched in the inside, it is safe because the operator cannot reach the space 7 on the opposite surface of the rotating disk 1 with the mower 4 still attached. There is also room to take down the mower 4 and loosen the entanglement. In particular, if the rotating disk 1 is made of a soft material such as vinyl, accidents such as cutting your fingers even if you carelessly put your hand out during rotation will not occur.
Moreover, the rotary disk 1 having the features up to claim 2 of the present invention may be additionally attached to the product of the rotary blade 2 on which the entanglement preventing blade is formed.
【００１５】このように本発明は、基本的に回転刃２の
欠け刃の飛びや、異物の跳ね飛ばしから作業者を守るも
のであると同時に、作業者が万一の不用意に回転刃２を
触れないように隔てるための回転する「衝立」でもあ
る。しかも以下の請求項のように作業時の切れ味を損ね
ない働きや、障害物にぶつけたときにも刃先部８自体を
守り刃飛び自体を起こさせない刃飛び防止の働きや、さ
らに切断時の草木の逃げを起こさせなくしてより以上の
草木の切断性や作業性を高める積極的な草刈性向上の働
きや、さらに草木の回転軸への絡み付きを絡み付き防止
用刃先部８で防止しながら且つ安全性の高い構造にする
など草刈作業時の作業者の安全性と切断性を同時に高め
ながら、しかも回転刃２の製造者にとっても本発明の回
転円盤１を装着させることで、例えば欠陥商品の回転刃
２であっても欠け刃の刃飛び事故を未然に防止できてＰ
Ｌ法の訴訟件数も減るという両者にとって画期的な商品
にできるものである。As described above, the present invention basically protects the worker from the jumping of the broken blade of the rotary blade 2 and the splashing of foreign matter, and at the same time, the worker carelessly takes care of the rotary blade 2 It is also a rotating "partition" that separates you from touching. Moreover, as described in the following claims, the function of not impairing the sharpness at the time of working, the function of protecting the blade tip portion 8 itself even when hitting an obstacle and preventing the blade jumping itself, and the plant at the time of cutting The function of positively improving the cutting ability and the workability by further increasing the cutting ability and workability of the vegetation without causing the escape of the vegetation, and further preventing the entanglement of the rotation axis of the vegetation with the entanglement prevention blade portion 8 For example, by rotating the rotary disc 1 of the present invention to the manufacturer of the rotary blade 2 while simultaneously improving the safety and cutting performance of the worker during mowing work, for example, rotating defective products. Even with the blade 2, it is possible to prevent accidental jumping of a chipped blade.
This will be an epoch-making product for both parties that the number of lawsuits under the L Law will decrease.
【００１６】ところで本発明の請求項２の耐衝撃材料に
は石油化成材料などで材料自体を変形し易い軟質材料に
して、衝撃に対してゴムのように弾性で変形するもので
あっても問題ない。By the way, the impact resistant material of claim 2 of the present invention may be a soft material such as petroleum chemical conversion material which is easily deformed and may be elastically deformed like rubber upon impact. Absent.
【００１７】[0017]
【００１８】[0018]
【図１】とＡ、Ｂ、Ｃ、Ｄ、Ｅ、Ｆ、Ｇ、Ｈ、Ｉ、Ｊ、
Ｋの図は、本発明によるＡ図の第１実施例からＫ図の第
１１実施例までを示す断面斜視図及び部分断面図及び部
分平面図である。本発明の特徴は回転円盤１を草刈機４
へセットする回転刃２と一緒に取り付けて回転させるも
のであるが、回転円盤１をそれぞれの目的に合わせてＡ
図からＫ図のような特徴をもたせることができる。1] and A, B, C, D, E, F, G, H, I, J,
The drawing of K is a sectional perspective view, a partial sectional view and a partial plan view showing the first embodiment of FIG. A to the eleventh embodiment of K diagram according to the present invention. The feature of the present invention is that the rotary disc 1 is provided with a mower 4.
It is attached and rotated together with the rotary blade 2 to be set to
From the figure, it is possible to have a characteristic like the figure K.
【００１９】Ａ図の部分断面図は請求項４のように回転
刃２へ回転円盤１を重ね合わせる構造とするが、この場
合に回転円盤１が図のような回転刃２と同径、大きい
径、小さい径の３種類考えられる。しかし該重ね合わせ
る方法の場合には最も理想な形状に回転円盤１と回転刃
２とが略・同径で、しかも回転刃２の刃先部８に略・同
形状の回転円盤１が、重なるものとなる。このような場
合に接着剤やリベットで両者を留め合わせて「安全カバ
ー一体化草刈円盤用刃」として発売しても良い。The partial sectional view of FIG. A has a structure in which the rotary disc 1 is superposed on the rotary blade 2 as in claim 4, and in this case the rotary disc 1 has the same diameter and a large size as the rotary blade 2 as shown. There are three types: small diameter and small diameter. However, in the case of the superposing method, the rotary disk 1 and the rotary blade 2 have substantially the same diameter as the most ideal shape, and the rotary disk 1 having the substantially same shape overlaps the blade tip portion 8 of the rotary blade 2. Becomes In such a case, the two may be fastened together with an adhesive or a rivet and released as a "safety cover integrated blade for mowing disc".
【００２０】Ｂ図の部分断面図は請求項５のように空間
部７が存在することにより、回転円盤１の大きさの多少
の差異があっても回転刃２の切断作用を妨害しない物と
なり、回転刃２の切れ味に影響を与えない構造にでき
る。しかも刃先部８からの異物の跳ね飛ばしが発生した
場合でも、たとえ図のように回転円盤１の径のほうが小
さい場合であっても図中の点線の軌道で飛散するため、
作業者の顔面など特定の部分だけは守ることができる。
また請求項８のように空間部７を利用して絡み防止刃５
やチップソーと同形状の刃先部８を取り付けても良い。The partial sectional view of FIG. B is such that even if there is a slight difference in the size of the rotary disk 1, the cutting action of the rotary blade 2 is not obstructed by the presence of the space 7 as in claim 5. A structure that does not affect the sharpness of the rotary blade 2 can be obtained. In addition, even if foreign matter is splashed from the cutting edge portion 8, even if the diameter of the rotating disk 1 is smaller as shown in the figure, it scatters along the dotted line trajectory in the figure,
Only specific parts such as the operator's face can be protected.
Further, as in claim 8, the space portion 7 is used to prevent the entanglement blade 5
Alternatively, a cutting edge portion 8 having the same shape as the tip saw may be attached.
【００２１】Ｃ図の部分断面図もＢ図と同様に請求項５
と請求項８の特徴を持たせたものであるが、異なる点は
回転円盤１の形状が半球形状的なものと平板の中心付近
を窪ませた形状の違いがあるが、該形状はどのようにし
たものでも良く、例えばコの字断面ように窪んだもの
や、縁が末広がりとなった台形状断面に窪んだものなど
であっても良い。The partial sectional view of FIG. 6C is the same as that of FIG.
However, the difference is that the shape of the rotating disk 1 is hemispherical and the shape in which the center of the flat plate is recessed is different. For example, it may be recessed like a U-shaped cross section, or may be recessed in a trapezoidal cross section with an edge widening.
【００２２】Ｄ図の部分平面図は、回転円盤１の外周形
状であるが本図のものをＡ図、Ｂ図、Ｃ図などどのよう
な断面形状にしても良い。したがってＡ図のようにチッ
プソーなど様々な刃先部８の形状と一致するようにして
回転刃２に載せる方法でも良いし、Ｂ図、Ｃ図のように
して回転刃２の径より大小異径の状態で使用しても良
い。The partial plan view of FIG. D shows the outer peripheral shape of the rotary disk 1, but this figure may have any sectional shape such as A, B and C. Therefore, as shown in FIG. A, a method of placing the blade on the rotary blade 2 so as to match the shape of various blade tips 8 such as a tip saw may be used, or as shown in FIGS. You may use it in the state.
【００２３】Ｅ図の部分平面図は、請求項７の特徴をも
たせたもので、刃先部８が放射方向となる図中の点線よ
り回転方向へ傾いて形成されることで、該傾角によって
草木がよせ集められて逃げられないようにして、下側の
回転刃２が刃先部８で草木を切断するものである。この
ときの回転円盤１の断面形状はＡ図、Ｂ図、Ｃ図などど
の回転刃２の外径よりも突出して大きいことが望まし
い。The partial plan view of the drawing E has the characteristics of claim 7, and the blade edge portion 8 is formed so as to be inclined in the rotational direction from the dotted line in the drawing, which is the radial direction, so that the inclination angle causes the plant or tree to grow. The lower rotary blade 2 cuts the plants at the blade tip 8 so that they are not gathered and cannot escape. At this time, it is desirable that the cross-sectional shape of the rotary disk 1 is projected and larger than the outer diameter of any rotary blade 2 in FIGS. A, B, and C.
【００２４】Ｆ図の部分平面図は、請求項６の特徴をも
たせたもので、刃先部８が複数箇所突出していること
で、回転中に異物が刃先部８に衝突する現象を、回転円
盤１の該突起部が回転刃２よりも先に衝突するため、刃
先部８と異物が容易にぶつからない刃先部防護構造にで
きる。このような回転円盤１の断面形状はＡ図、Ｂ図、
Ｃ図などの回転刃２の外径よりも突出して大きいことが
望ましい。The partial plan view of Fig. F has the characteristics of claim 6, and the phenomenon that foreign matters collide with the cutting edge portion 8 during rotation due to the cutting edge portion 8 projecting at a plurality of positions Since the projecting portion 1 collides with the rotary blade 2 before the rotary blade 2, the blade edge portion protection structure in which the blade edge portion 8 and foreign matter do not easily collide can be provided. The cross-sectional shape of such a rotating disk 1 is shown in FIGS.
It is desirable that it is larger than the outer diameter of the rotary blade 2 as shown in FIG.
【００２５】Ｇ図の部分断面図は、Ｈ図〜Ｋ図も同様に
回転円盤１を複数の材料で形成する方法を提案するもの
で、衝撃に破損しない材質の外周部分の回転円盤１と例
えば金属や硬質材料で形成した回転円盤１｀を留め合わ
せて一体化させる際に、２枚の材料をスポット溶接など
の手段で図のように張り合わせて一体化している。Ｈ図
の部分断面図は、内径が同一の２枚の回転円盤１｀を張
り合わせて一体化している。The partial sectional view of FIG. G also proposes a method of forming the rotary disk 1 from a plurality of materials in the same manner as in FIGS. H to K. When the rotating discs 1'made of metal or hard material are fastened together to be integrated, the two materials are joined together by means such as spot welding as shown in the figure. In the partial cross-sectional view of Figure H, two rotating discs 1'having the same inner diameter are attached and integrated.
【００２６】Ｉ図の部分断面図は、リベットによって回
転円盤１の材料部品同士を留め合わせて一体化する方法
である。Ｊ図の部分断面図は、Ｉ図の留め合わせ方法で
あるが、回転円盤１｀に絡み防止刃５として刃先部８を
形成させて回転円盤１と一体化させたものである。この
場合の刃先部８は金属が望ましいが回転円盤１｀からバ
ーリングなどで彫り起こしても良いし、刃先部８を回転
円盤１｀へ後付けして一体化させても良い。また図のよ
うな回転円盤１｀の中心付近窪み形状は回転刃２に載せ
たときに空間部７を形成するための構造である。The partial sectional view of FIG. 1 shows a method in which the material parts of the rotating disk 1 are fastened together by rivets and integrated. The partial cross-sectional view of FIG. J shows the fastening method of FIG. I, but the blade tip portion 8 is formed as the entanglement-preventing blade 5 on the rotary disc 1 ′ and integrated with the rotary disc 1. In this case, the blade edge portion 8 is preferably made of metal, but may be carved up from the rotary disc 1'by burring or the blade edge portion 8 may be retrofitted to the rotary disc 1'and integrated. Further, the hollow shape near the center of the rotary disk 1'as shown in the figure is a structure for forming the space 7 when the rotary disk 1 is mounted on the rotary blade 2.
【００２７】Ｋ図の部分断面図は、Ｇ図の留め合わせ方
法であるが、Ｊ図と異なる位置に刃先部８を形成させて
絡み防止刃５としている。The partial sectional view of the K diagram shows the fastening method of the G diagram, but the blade tip portion 8 is formed at a position different from the J diagram to form the entanglement preventing blade 5.
【００２８】[0028]
【図２】は、本発明の第１２実施例を示す回転円盤の構
成部品の斜視図である。本図は回転円盤１を複数部品で
構成し一体化させる場合の回転円盤１｀であるが、特徴
は刃先部８を形成させる形態の様々な提案例である。図
のように４箇所に形成させた刃先部８はそれぞれ４つの
形成方法を提案するものであるし、また図のような４箇
所で形成させる刃先部８を別部品にしてスポット溶接な
どで後付けするなどの方法でも良い。FIG. 2 is a perspective view of components of a rotary disk showing a twelfth embodiment of the present invention. This drawing shows the rotary disk 1'in the case where the rotary disk 1 is composed of a plurality of parts and integrated, but the feature is various proposal examples of the form in which the cutting edge portion 8 is formed. As shown in the figure, the blade tip portions 8 formed at four locations propose four forming methods, respectively, and the blade tip portions 8 formed at four locations as shown in the figure are separated into parts and are later attached by spot welding or the like. It is also possible to do so.
【００２９】[0029]
【発明の効果】本発明は、回転円盤を草刈機の回転刃に
載せて共に回転させて使用することにより作業性を損な
うことなく、回転する耐衝撃材料が障害物衝突時の石飛
ばしや回転刃の刃飛びから作業者を守る防護カバーとし
て働くだけでなく、請求項６のように回転円盤の一部分
を回転刃の先端よりも突出させることで、石などの異物
に衝突した場合でも回転円盤が先に衝突し、回転刃の刃
先部へ異物をぶつけさせない刃先部防護構造にもできる
し、また請求項７のようにさせることで草木を逃がさな
いぶんだけ刈払い効率が向上するし、また請求項８のよ
うにすることで、作業時に発生する草木の絡み付きを絡
み防止刃によって切断して防止できるうえ、該絡み防止
刃と作業者の間にカバーとして回転円盤が媒介するため
に回転刃の刃先部や絡み防止刃に容易に触れない構造で
あるため安全である。According to the present invention, the rotating disk is placed on the rotary blade of a mower and is used together by rotating the blade so that the rotating impact-resistant material does not impair the workability. Not only does it act as a protective cover to protect the operator from the blade jumping, but by making a part of the rotary disk project beyond the tip of the rotary blade as in claim 6, even when the rotary disk collides with foreign matter such as stones. Can collide first and prevent foreign matter from hitting the blade tip of the rotary blade, and by adopting the structure of claim 7, the efficiency of brush cutting can be improved as much as it does not allow the plants to escape. According to claim 8, the entanglement of vegetation that occurs during work can be prevented by cutting it with the entanglement prevention blade, and the rotary disc acts as a cover between the entanglement prevention blade and the operator so that the rotation blade Blade part Since a structure which does not easily touch the anti-blade entanglement is safe.
【図１】のＡ図からＫ図までは、本発明の第１実施例か
ら第１１実施例を示す断面斜視図及び部分平面図及び部
分断面図である。1A to 1K are a sectional perspective view, a partial plan view and a partial sectional view showing the first to eleventh embodiments of the present invention.
【図２】は、本発明の第１２実施例を示す斜視図であ
る。FIG. 2 is a perspective view showing a twelfth embodiment of the present invention.
Ａ、Ｂ、Ｃ、Ｄ、Ｅ、Ｆ、Ｇ、Ｈ、Ｉ、Ｊ、Ｋ−−実施
例、 １−−回転円盤、２−−回転刃、３−−中心留め
穴部、４−−草刈機、５−−絡み防止刃、６−−接合部
品、７−−空間部、８−−刃先部、９−−取付部、１０
−−傾角、A, B, C, D, E, F, G, H, I, J, K-Examples, 1-Rotating disk, 2-Rotating blade, 3-Center retaining hole, 4-Mowing Machine, 5--entanglement prevention blade, 6-joining part, 7-space part, 8-edge part, 9-mounting part, 10
--- tilt angle,
Claims (8)
た草刈円盤に於いて、回転円盤を回転刃に載せて使用す
る構造として、この場合の該回転円盤は作業者と回転刃
とを隔てる媒介物として存在する構造としたことを特徴
とする草刈用回転刃カバー。1. A grass cutting disc having a blade tip formed in a radial direction from a core of a rotary shaft, wherein the rotary disc is mounted on the rotary blade for use. In this case, the rotary disc is composed of an operator and a rotary blade. A rotary blade cover for mowing, characterized by having a structure that exists as a medium that separates.
料で構成する構造とした特許請求の範囲第１項記載の草
刈用回転刃カバー。2. The rotary blade cover for mowing according to claim 1, wherein the rotary disk is made of a material which is not damaged by impact.
や欠け刃などの異物の跳ね飛ばしを作業者側に飛ばさな
い為の防護カバーとして作用する構造とした特許請求の
範囲第１項及び第２項記載の草刈用回転刃カバー。3. The rotary disk has a structure which acts as a protective cover for preventing the splashing of foreign matters such as stones and chipped blades from the rotary blade during the work from being blown to the operator side. The rotary blade cover for mowing according to the above items and 2.
・同一形状として重ね合わせて一体化させた特許請求の
範囲第１項及び第２項及び第３項記載の草刈用回転刃カ
バー。4. The rotary blade for mowing according to claim 1, 2 or 3, wherein the rotary disk has a shape which is substantially the same as the blade tip portion of the rotary blade and is integrated with each other. cover.
部先端とは一部分または全体が離れて浮いた状態となっ
て空間部を有する構造とした特許請求の範囲第１項及び
第２項及び第３項記載の草刈用回転刃カバー。5. The structure according to claim 1 or 2, wherein the rotary disk has a space part in which the rotary disk partly or entirely separates from the tip of the blade tips of the superposed rotary blades and floats. And the rotary blade cover for mowing according to item 3.
の刃先部先端よりも突出する構造とすることで、該回転
円盤の該突出する一部分が刃より先に衝突することで、
刃先部と異物が容易にぶつからない刃先部防護構造とし
た特許請求の範囲第１項及び第２項及び第３項及び、第
４項叉は第５項記載の草刈用回転刃カバー。6. A structure in which a tip portion of a part of the rotary disk is projected more than a tip of a blade tip of a rotary blade, whereby the projecting part of the rotary disk collides before the blade,
The rotary blade cover for mowing according to claim 1, claim 2, claim 3 or claim 4 or claim 5, wherein the blade edge protection structure prevents foreign matter from easily hitting the blade edge.
の刃先部先端よりも突出しながら、該回転円盤の刃先部
形状が回転軸芯の放射方向より回転方向へ傾角をもたせ
た形状とすることで、該突出した該回転円盤の傾角によ
って草木をよせ集めて逃げない構造として、該回転刃に
刈り取らせる構造とした特許請求の範囲第１項及び第２
項及び第３項及び、第４項叉は第５項、及び第６項記載
の草刈用回転刃カバー。7. The shape of the edge of the rotary disk is tilted in the rotational direction from the radial direction of the rotary shaft while the tip of the rotary disk is projected from the tip of the edge of the rotary blade. Therefore, the structure in which the plants are gathered and collected by the tilt angle of the projecting rotary disk to prevent the plants from escaping, and the rotary blade is trimmed is claimed.
The rotary blade cover for mowing according to the item (3), the item (3), the item (4) or the item (5), and item (6).
の空間部に刃先部を形成させることで、作業中の草木の
絡み付き防止構造とした特許請求の範囲第１項及び第２
項及び第３項及び、第４項叉は第５項、及び第６項及び
第７項記載の草刈用回転刃カバー。8. A structure for preventing entanglement of vegetation during work by forming a cutting edge portion in a space between the rotary disc and the rotary blade which are overlapped with each other.
The rotary blade cover for mowing according to the above item, item 3, item 4, item 4 or item 5, item 6 and item 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7289292A JPH09103164A (en) | 1995-10-11 | 1995-10-11 | Cover of rotation blade for mowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7289292A JPH09103164A (en) | 1995-10-11 | 1995-10-11 | Cover of rotation blade for mowing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09103164A true JPH09103164A (en) | 1997-04-22 |
Family
ID=17741298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7289292A Pending JPH09103164A (en) | 1995-10-11 | 1995-10-11 | Cover of rotation blade for mowing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09103164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007295862A (en) * | 2006-05-01 | 2007-11-15 | Ryobi Ltd | Lawn mower |
| KR101424062B1 (en) * | 2012-11-20 | 2014-08-13 | 대한민국 | A motorized weeding apparatus having a fixed blade |
-
1995
- 1995-10-11 JP JP7289292A patent/JPH09103164A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007295862A (en) * | 2006-05-01 | 2007-11-15 | Ryobi Ltd | Lawn mower |
| KR101424062B1 (en) * | 2012-11-20 | 2014-08-13 | 대한민국 | A motorized weeding apparatus having a fixed blade |
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