JPH0315307A - Mowing knife plate - Google Patents
Mowing knife plateInfo
- Publication number
- JPH0315307A JPH0315307A JP1151107A JP15110789A JPH0315307A JP H0315307 A JPH0315307 A JP H0315307A JP 1151107 A JP1151107 A JP 1151107A JP 15110789 A JP15110789 A JP 15110789A JP H0315307 A JPH0315307 A JP H0315307A
- Authority
- JP
- Japan
- Prior art keywords
- corner
- straight edge
- inclined straight
- blade
- plate
- 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
- 244000025254 Cannabis sativa Species 0.000 claims description 33
- 241001494496 Leersia Species 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高速回転する刃板で雑草をなで切りに、する
草刈機の草刈刃板に係るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mowing blade plate for a mower that cuts weeds with a blade plate that rotates at high speed.
従来草刈機の草刈刃板は、色々な形状のものが開発され
ている。Conventional mowing blade plates for mowers have been developed in various shapes.
大別すると次の通りである。They can be broadly classified as follows.
Ａ．円盤の周縁にノコギリ歯を突設したタイプＢ，円盤
の周縁にラチェット歯状の突出歯を形状し、その立上が
り段状郎に刃を形成したタイプＣ．円盤の４個所若しく
は３個所に長方形の刃板を十字状或いはＹ字状に突設し
たタイプＡは刃こぼれし易い上摩耗も激しい。A. Type B has sawtooth teeth protruding from the periphery of the disk, and Type C has ratchet-like protruding teeth on the periphery of the disk and a blade is formed on the rising edge of the protruding tooth. Type A, which has rectangular blade plates protruding from four or three places on the disc in a cross or Y shape, is prone to blade spillage and is subject to severe wear.
Ｂは立ち上がり縁のところだけで切断作用を行う為切断
巾が小さくなる。また摩耗もし易いが、一番普及してい
る。Since B performs the cutting action only at the rising edge, the cutting width is small. It also wears out easily, but it is the most popular.
Ｃは切断巾を大きくしようとしたものであるが、刃板が
高速回転している為草の入り込みが悪くその成果が期待
できない。C is an attempt to increase the cutting width, but because the blade rotates at high speed, it is difficult for grass to enter, so the results cannot be expected.
本発明は、これらの考察に従って、切断中を大きくし雑
草の入り込みも良好にして、切断力にも秀れ、従来品に
比して摩耗せず数倍も長持ちする草刈刃板を完成するこ
とを課題とするものである。In accordance with these considerations, the present invention aims to complete a grass cutting blade that has a large cutting area, allows weeds to enter easily, has excellent cutting power, and lasts several times longer than conventional products without wearing out. The challenge is to
添付図面を参照して詳述すると次の通りである。 The details are as follows with reference to the accompanying drawings.
いくつかの角部１を有する角板ａの各角部１の同じ側の
角部１付近に角部２等分線に対して傾斜角を有する傾斜
直線縁部２を形成し、この傾斜直線縁部２に草刈刃ｂを
形成したことを特徴とする草刈刃板に係るものである。An inclined straight edge 2 having an inclination angle with respect to the corner bisector is formed near the corner 1 on the same side of each corner 1 of a corner plate a having several corners 1, and this inclined straight line This relates to a grass cutting blade plate characterized in that a grass cutting blade b is formed on the edge 2.
いくつかの角部１を有する角板ａの各角部ｌの同じ側の
角部１付近に角部２等分線に対して傾斜角を有する傾斜
直線縁部２を形成し、この傾斜直線縁部２に草刈刃ｂを
形成し、傾斜直線縁部２の内側に研削基準線１３を傾斜
直線縁と平行に一定間隔を置いて複数本並設したことを
特徴とする草刈刃板に係るものである。An inclined straight edge 2 having an inclination angle with respect to the corner bisector is formed near the corner 1 on the same side of each corner l of a corner plate a having several corners 1, and this inclined straight line Relating to a grass cutting blade plate characterized in that a grass cutting blade b is formed on the edge 2, and a plurality of grinding reference lines 13 are arranged parallel to the inclined straight edge 2 at regular intervals on the inside of the inclined straight edge 2. It is something.
いくつかの角部１を有する角板ａの各角部１の同じ側の
角部１付近に角部２等分線に対して傾斜角を有する傾斜
直線縁部２を形成し、この傾斜直線縁部２に刃縁が波状
に連続する草刈刃ｂを形成したことを特徴とする草刈刃
板に係るものである。An inclined straight edge 2 having an inclination angle with respect to the corner bisector is formed near the corner 1 on the same side of each corner 1 of a corner plate a having several corners 1, and this inclined straight line This relates to a grass cutting blade plate characterized in that a grass cutting blade b whose blade edge is continuous in a wavy manner is formed on the edge portion 2.
いくつかの角部１を有する角板ａの各角部１の同じ側の
角部１付近に角部２等分線に対して傾斜角を有する傾斜
直線縁部２を形成し、この傾斜直線縁部２に傾斜直線縁
と交叉する方向に一面が凸状態で反対面が凹状態の突条
３を並設して傾斜直線縁と平行する方向の断面形状を凹
凸波型に変形せしめ、この凹凸波型に変形した傾斜直線
縁部２を上向き又は下向き斜面４に研削して刃縁が波状
に連続する草刈刃ｂを形成したことを特徴とする草刈刃
板に係るものである。An inclined straight edge 2 having an inclination angle with respect to the corner bisector is formed near the corner 1 on the same side of each corner 1 of a corner plate a having several corners 1, and this inclined straight line Projections 3 having one side convex and the other side concave are arranged in parallel on the edge 2 in a direction intersecting the inclined straight edge, and the cross-sectional shape in the direction parallel to the inclined straight edge is deformed into a concave and convex wave shape. The present invention relates to a mowing blade plate characterized in that an inclined straight edge 2 deformed into an uneven wave shape is ground into an upward or downward slope 4 to form a mowing blade b whose blade edge continues in a wavy manner.
請求項４記載の草刈刃板において、突条３を並設せしめ
る範囲全体を板面より凸出せしめ、この凸出範囲ｌ４に
凹条巧を凹設して凹条巧の裏側を凸出範囲１４の裏面よ
りも裏側へ突出せしめて裏側突条３゜を形成し、表側の
凹条巧間に表側の突条３を形成せしめたことを特徴とす
る草刈刃板に係るものである。In the mowing blade plate according to claim 4, the entire area where the protrusions 3 are arranged side by side is made to protrude from the plate surface, and the concave grooves are recessed in this protruding area l4, and the back side of the concave grooves is formed into the protruding area. This relates to a grass cutting blade plate characterized in that a back side protrusion 3° is formed to protrude to the back side from the back side of the blade 14, and a front side protrusion 3 is formed between the concave grooves on the front side.
請求項１ ．２ ，３ ，４ ．５記載の草刈刃板にお
いて、角板ａの角部１を角部２等分線を軸とする左右回
転対称形に形成し、双方の傾斜直線縁部２・２゛に草刈
刃ｂ − ｂ’を形成したことを特徴とする草刈刃板に
係るものである。Claim 1. 2, 3, 4. In the mowing blade plate according to No. 5, the corner portion 1 of the corner plate a is formed in a left-right rotationally symmetrical shape with the corner bisector as an axis, and the mowing blade b-b is provided on both inclined straight edges 2.2゜. The present invention relates to a grass cutting blade plate characterized in that it is formed with '.
請求項ｌにおいて、角板ａを例えば第１図のような方形
板とすれば角部２等分線に対して傾斜直線縁部２は４５
度となる。In claim 1, if the corner plate a is a rectangular plate as shown in FIG.
degree.
この傾斜直線縁部２に草刈刃ｂを形成すると草刈刃ｂの
艮さａが長くなり、且つ第２図斜線イの部分の面積が大
きくなり、例え高速回転しても草の入り込みが良好とな
る。When the grass cutting blade b is formed on this inclined straight edge 2, the length a of the grass cutting blade b becomes longer, and the area of the part indicated by the diagonal line A in FIG. Become.
その上母体角板の板取りが経済的に行なわれ、且つ軽量
な草刈刃板となる。Moreover, the base square plate can be cut economically, and the mowing blade plate is lightweight.
請求項２において、草刈刃ｂが切れなくなって研削する
場合には次の内側の研削基準線爲を目安としてそこまで
研削する。In claim 2, when the mowing blade b becomes dull and needs to be ground, the next inner grinding reference line is used as a guide and the cutting blade b is ground to that point.
請求項３において、また、傾斜直線縁部２に刃縁が波状
に連続する草刈刃ｂを形成すると、上記作用に加えて雑
草を確実に波状の谷内部に捕らえてなで切り切断するか
ら一層秀れた切断作用を発揮する草刈刃板となる。In claim 3, if the mowing blade b whose blade edge is continuous in a wavy manner is formed on the inclined straight edge portion 2, in addition to the above-mentioned effect, the weeds are reliably captured and cut within the wavy valleys, so that the mowing blade b is even more effective. It becomes a grass cutting blade that exhibits excellent cutting action.
請求項４において、傾斜直線縁部２に例えば角部２等分
線と斜めに交叉する方向に一面が凸状態で反対面が凹状
態の突条３を並設して傾斜直線縁部２と平行する方向の
断面形状を凹凸波型に変形せしめ、この凹凸波型変形し
た傾斜直線縁部２を上向き又は下向き斜面４に研削して
刃付すると、刃縁が波状に連続する草刈刃ｂが形成され
、回転方向に対して第３図の実施例の場合には直縁刃５
はなで切り作用を発揮し、また凹縁刃６はその谷内部で
雑草をとらえて切断する作用を発揮する。In claim 4, the inclined straight edge 2 is provided with a protrusion 3 having one side convex and the opposite side concave in a direction obliquely intersecting the corner bisector, for example, so that the inclined straight edge 2 is formed. When the cross-sectional shape in the parallel direction is deformed into a concave and convex wave shape, and the sloped straight edge 2 which has been deformed into the concave and convex wave shape is ground into an upward or downward slope 4 and a blade is attached, a mowing blade b whose blade edge is continuous in a wave shape is obtained. In the embodiment of FIG. 3, a straight edge edge 5 is formed and
It exhibits a cutting action, and the concave edge blade 6 has an action of catching and cutting weeds within its valley.
以上、いずれの場合も草刈刃ｂの切断中はＱとなり、従
来品に比して非常に巾広くなる。In any of the above cases, the mowing blade b becomes Q during cutting, and is much wider than the conventional product.
そして第２図の斜線部分の面積イが従未品に比して非常
に広くなるから高速回転しても雑草の入り込みがさまた
げられることながく、草刈刃ｂの全中で切断を司さどる
ことになる。And since the area (A) of the shaded area in Figure 2 is much wider than that of conventional products, weeds will not be obstructed even when the blade rotates at high speed, and cutting will be carried out within the entire mowing blade (B). become.
再刃付けに際しては上向き又は下向き斜面４を砥石で直
線的になでるだけの簡単な研ぎ動作で最初の切れ味に復
帰させることができ、次の内側の研削基準線１３まで研
削すれば常に最初の形状を保持することになる。When re-sharpening, the initial sharpness can be restored by simply stroking the upward or downward slope 4 in a straight line with a whetstone, and by grinding to the next inner grinding reference line 13, the sharpness will always remain in the original shape. will be retained.
第４図のように、角板ａの角部１を２等分線を軸とする
左右回転対称形に形成し、双方の傾斜直線縁部２・２′
に草刈刃ｂ − ｂ’を形成すると、一方の傾斜直線縁
部２の草刈刃ｂが摩耗したら草刈刃ｂ゛が反対而に形成
されている場合には裏返しにして草刈刃ｂ゜を使用する
ことができるし、草刈刃ｂ゜か同じ面に形成されている
場合には反対回転せしめて草刈刃ｂ゜を使用することが
できる。As shown in Fig. 4, the corner part 1 of the square plate a is formed in a left-right rotationally symmetrical shape with the bisector as the axis, and both inclined straight edges 2 and 2'
If the grass cutting blade b-b' is formed on the slanted straight edge 2, if the grass cutting blade b on one inclined straight edge 2 wears out, if the grass cutting blade b' is formed on the opposite side, turn it over and use the grass cutting blade b'. If the mowing blade b° is formed on the same surface, the mowing blade b° can be used by rotating it in the opposite direction.
請求項５において、突条３を並設せしめる範囲全体を板
而より凸出せしめ、この凸出範囲１４に凹条１５を凹設
して凹条１５の裏側を凸出範囲１４の裏面よりも裏側へ
突出せしめて裏側突条３゛を形成し、表側の凹条巧間に
表側突条３を形成せしめると、第ｌ３図のように板面の
表裏に対する出入りの厚さ（刃厚）、すなわちｈが第１
４図に示すＨ （第３図の断面図）より小さくなるから
それだけ切断抵抗が小さくなる。In claim 5, the entire range in which the protrusions 3 are arranged side by side is made to protrude from the plate, and the concave strip 15 is recessed in this protruding range 14 so that the back side of the concave strip 15 is lower than the back side of the protruding range 14. When the back side protrusion 3 is formed by protruding to the back side, and the front side protrusion 3 is formed between the concave grooves on the front side, the thickness (blade thickness) of entering and exiting from the front and back of the board surface as shown in Fig. 13, That is, h is the first
Since it is smaller than H shown in FIG. 4 (cross-sectional view in FIG. 3), the cutting resistance becomes correspondingly smaller.
請求項６において、角板ａの角部ｌを角部２等分線を軸
とする左右回転対称形に形成し、双方の傾斜直線縁部２
・２゜に草刈刃ｂ − ｂ’を形成したから草刈刃ｂが
摩耗したら裏返して新しい草刈刃ｂ′を使用することが
できる。In claim 6, the corner l of the corner plate a is formed in a left-right rotationally symmetrical shape with the corner bisector as an axis, and both inclined straight edges 2
- Since the mowing blade b-b' is formed at 2 degrees, when the mowing blade b becomes worn, it can be turned over and a new mowing blade b' can be used.
〔実施例〕
第１図は、略＊９ｃｘ角程度の四角板ａの傾斜直線縁部
２に草刈刃ｂを刃付けしたものである。[Embodiment] Fig. 1 shows a rectangular plate a having an approximately *9cx angle, with a mowing blade b attached to an inclined straight edge 2 thereof.
尚、傾斜直線縁部２は正確な直線でなくとも直線的な刃
縁であれば良い。Incidentally, the inclined straight edge portion 2 does not have to be an exact straight line as long as it is a straight blade edge.
図中符号８は取付孔、９は区画凹部である。In the figure, reference numeral 8 is a mounting hole, and 9 is a partition recess.
第２図は、略１９ｃｍ角程度の四角板ａの傾斜直線縁部
２に斜めに８個の凹溝ロを研削して刃縁が波状に連続す
る草刈刃ｂを形成した場合を図示している。Figure 2 shows a case in which eight grooves are obliquely ground on the inclined straight edge 2 of a square plate a of about 19 cm square to form a mowing blade b with a continuous wavy edge. There is.
第３図は、傾斜直線縁部２に、傾斜直線縁！４２に対し
て略４５度で交叉する方向に、一面が凸状態で反対面が
凹状態の突条３を数ＨＩＭ間隔で並設し、傾斜直線縁部
２を上向き傾斜で研削して直縁刃５と凹縁刃６とが交互
に配された刃縁が波状に連続する草刈刃ｂを設けた場合
を図示している。Figure 3 shows an inclined straight edge 2 and an inclined straight edge! 42, protrusions 3 with one side convex and the other side concave are arranged in parallel at several HIM intervals, and the inclined straight edge 2 is ground with an upward slope to form a straight edge. A case is shown in which a mowing blade b is provided with a continuous wave-shaped blade edge in which blades 5 and concave edge blades 6 are arranged alternately.
第４図は、傾斜直線縁部２と対向する傾斜直線縁部２″
に草刈刃ｂ゜を草刈刃ｂと反対向きに、すなわち角板ａ
を裏返しにしたとき草刈刃ｂ゛か草刈刃ｂになる関係に
設けた場合を図示している。FIG. 4 shows an inclined straight edge 2'' opposite an inclined straight edge 2.
Then move the mowing blade b゜ in the opposite direction to the mowing blade b, that is, the square plate a.
The figure shows a case in which the blade is installed in such a manner that it becomes the grass cutting blade b when it is turned over.
第５図は、突条３の断面図を拡大し、突条３の付け方を
示したものである。FIG. 5 is an enlarged cross-sectional view of the protrusion 3 and shows how the protrusion 3 is attached.
第６図は、角板ａの周辺を第７図のように上向きに折曲
せしめた場合を図示しているもので、角板ａを浅皿状に
形成して刃板周辺に上向き傾斜部７を形成し、この上向
き傾斜郎７の傾斜直線縁部２・２゛に草刈刃ｂ − ｂ
’を形成すると、刃板が薄くとも丈夫な草刈刃板となる
上、反対側の草刈刃ｂ゜側が常に研磨作用を受けて研削
されることになる。Figure 6 shows the case where the periphery of the square plate a is bent upward as shown in Figure 7, where the square plate a is formed into a shallow dish shape and there is an upwardly inclined part around the blade plate. 7, and a mowing blade b-b is attached to the slanted straight edge 2.
By forming '', the blade plate becomes strong even if it is thin, and the grass cutting blade b° side on the opposite side is constantly subjected to polishing action and ground.
そして裏返しにして使用すると研削された新しい草刈刃
ｂ゜を使用することができ、このことを繰返して行えば
常に研削された切れ味の良い状態で使用できる。If you turn it upside down and use it, you can use a freshly ground mowing blade b°, and if you repeat this process, you can always use it in a well-ground and sharp state.
また、再研磨する場合には草刈機に取付けた状態のまま
で地面などに置いた砥石に草刈刃板を回転させた状態で
押し当てるだけで上き向傾斜部７の先端々面の全周が研
削され、容易に再刃付けができることになる。In addition, when re-sharpening, simply rotate the mowing blade plate and press it against a whetstone placed on the ground while it is still attached to the mower. This means that the blade can be easily re-sharpened.
更に上向き傾斜郎７を上向き状態で草刈りする場合と、
下向状態で草刈する場合とが生じ、草の切断高を２段に
使い分けることができる。Furthermore, when mowing the grass with the upward slope 7 facing upward,
There are cases where the grass is mowed in a downward position, and the grass cutting height can be divided into two stages.
第８図は、略三角板ａを角部１を９０度に形成し、傾斜
直線縁部２に第２図と同様な草刈刃ｂを設けた場合を図
示している。FIG. 8 shows a case where a substantially triangular plate a is formed with a corner 1 at 90 degrees, and a mowing blade b similar to that shown in FIG. 2 is provided on an inclined straight edge 2.
第９図は、角板ａと取替用刃板１１に構成し、取替用刃
板１１を角板ａの傾斜直線縁部２に例えばボルトナット
機構捻で固定し、この取替用刃板１ｌに第２図のような
草刈刃ｂを形成した場合を図示している。FIG. 9 shows a structure consisting of a square plate a and a replacement blade plate 11, and the replacement blade plate 11 is fixed to the inclined straight edge 2 of the square plate a with, for example, a bolt-nut mechanism twist. This figure shows a case where a mowing blade b as shown in FIG. 2 is formed on the plate 1l.
第ｌＯ、１１，１２図は、略三角形、略四角形、略五角
形板ａを角部１を略９０度に形成し、傾斜直線縁部２に
第３図と同様な草刈刃ｂを設け、夫々の草刈刃ｂの傾斜
直線縁部２に平行な研削基準線ｌ３を並設し、角部１の
刃付しない部分を巾広くした場合を図示している。10, 11 and 12, a substantially triangular, substantially quadrangular, and substantially pentagonal plate a is formed with a corner 1 of approximately 90 degrees, and a mowing blade b similar to that shown in FIG. 3 is provided on an inclined straight edge 2. A case is shown in which a grinding reference line l3 parallel to the inclined straight edge 2 of the mowing blade b is arranged in parallel, and the portion of the corner 1 where the blade is not attached is widened.
〔発゜明の効果〕
本発明は上述のように構成したから従来品に比較して
（１） ｍ草を切断する刃縁の長さを非常に長くするこ
とかできる。[Effects of the invention] Since the present invention is configured as described above, compared to conventional products, (1) the length of the blade edge for cutting grass can be made much longer.
（２）角部先端の最大径の回転軌跡円から刃板を差し引
いた面積イが非常に大きくなるからそれだけ雑草の切断
縁への入り込み圧接が有効となる。(2) Since the area (i) obtained by subtracting the blade plate from the rotation locus circle with the maximum diameter at the tip of the corner becomes very large, it becomes more effective to press the weeds into the cutting edge.
（３）刃縁か波状に連続する草刈刃を採用した場合には
、谷内部で雑草を的確にとらえてなで切りするから切断
能力が増大する。(3) When a mowing blade with a continuous wave-like edge is adopted, weeds can be accurately caught and cut within the valley, resulting in increased cutting ability.
（４）草刈刃の刃縁長が長いから摩耗しにくい耐久的な
草刈刃板となり、特に波状の草刈刃を採用した場合には
一層摩耗しにくい草刈刃板となる。(4) Since the blade edge length of the mowing blade is long, it becomes a durable mowing blade that is less likely to wear out, and especially when a wavy mowing blade is adopted, the mowing blade becomes even more resistant to wear.
（５）いずれの−タイプも刃付される部分が角部２等分
線に対して斜傾しているため、地面、石等に接触しても
破損することが軽減され、且つ作業者側に対して石、土
等のはねかえりが少なく安全である。(5) In both types, the bladed part is inclined with respect to the corner bisector, reducing the risk of damage even if it comes into contact with the ground, stones, etc. It is safe because there is little splashing of stones, soil, etc.
（６）従来品の草刈刃板に比較して板取りが経済的で且
つ非常に軽い草刈刃板となり、それだけ作業がし易く作
業者の負担が小さくなる。(6) Compared to conventional grass cutting blades, the cutting blade is economical to cut and is very light, making it easier to work and reducing the burden on the operator.
（７）従来品の再刃付けは非常に難しかったが、本発明
の草刈刃板は刃付斜面を砥石で直線的になでるだけで再
刃付けが可能となり、更に上向き傾斜部を設けた場合に
は取り付けたまま回転させて砥石に当てるだけで直ちに
再刃付けすることが可能となる。(7) It was very difficult to re-sharpen the conventional products, but the mowing blade of the present invention can be re-sharpened simply by stroking the blade slope in a straight line with a whetstone. It is now possible to immediately resharpen the blade by simply rotating it while it is attached and placing it against a whetstone.
（８）研削基準線を目安にして研削できるから研削か容
易となり、常に所定の形状に研削できる。(8) Grinding is easy because the grinding reference line can be used as a guide, and the grinding can always be done to a predetermined shape.
（９）第１３図のように形成すると刃板に対する刃付郎
の出入りの厚さｈが小さくなるから切断抵抗が小さくな
り、それだけ雑草の切断が良好に行なわれ、切味の良い
草刈刃板となる。(9) When formed as shown in Fig. 13, the thickness h of the blade entering and exiting from the blade plate becomes smaller, so the cutting resistance becomes smaller, and weeds can be cut better to that extent, resulting in a mower blade with good sharpness. becomes.
などの特長が発揮され、実用性秀れた草刈刃板となる。These features make it a highly practical mowing blade.
図面は本発明の一実施例を示すもので、第１図は本発明
の請求項ｌの草刈刃板の平面図、第２図は請求項３の草
刈刃板の平面図、第３図は請求項４の草刈゜刃板の平面
図、第４図は角部を境として対向する傾斜直線縁部の双
方に草刈刃を設けた別例請求項４の草刈刃板の要部の裏
面図、第５図は第４図のＡ−Ａ線の断面図、第６図は別
例の草刈刃板の裏面図、第７図は第６図のＢ−Ｂ線の断
面図、第８図は別例請求項４の草刈刃板の平面図、第９
図（よ取替用刃板を採用した別例の要部の平面図、第ｌ
Ｏ、１１，１２図は夫々三角板、四角板五角板を母体と
し、請求項２を実施した別例の草刈刃板の平面図、第１
３図は請求項５の草刈刃板の刃厚を示す要部の断面図、
第１４図は請求項４の草刈刃板の刃厚を示す断面図、第
１５図は第ｌＯ図の草刈刃板の刃厚を示ず断面図である
。
ａ・・・角仮、ｂ，ｂ’・・・草刈刃、■・・・角部、
２．２゛・・・傾斜直線縁部、３・・突条、３゜・・・
裏側突条、４・・・斜面、７・・上向き傾斜部、１１・
・・取替用刃板、１３・・・研削基準線、ｌ４・・・凸
出範囲、１５・・・凹条。
７３の
しづ−」
プｑ層
＊／＃
／
５１し知
／〕
ブ６〃
−
７７／Ａ
？θ■■■
７／０の
手続補正書（自発）The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a grass cutting blade plate according to claim 1 of the present invention, FIG. 2 is a plan view of a grass cutting blade plate according to claim 3, and FIG. Fig. 4 is a plan view of the mowing blade plate according to claim 4, and Fig. 4 is a back view of the main part of the mowing blade plate according to another embodiment in which mowing blades are provided on both inclined straight edges facing each other with a corner as a boundary. , FIG. 5 is a sectional view taken along line A-A in FIG. 4, FIG. 6 is a back view of another example of the mowing blade plate, FIG. 7 is a sectional view taken along line BB in FIG. 6, and FIG. is a plan view of the mowing blade plate according to another claim 4, No. 9
Figure (plan view of the main parts of another example that uses a replacement blade plate, part 1
Figures 0, 11 and 12 are plan views of another example of a mowing blade plate in which claim 2 is implemented using a triangular plate, a square plate and a pentagonal plate, respectively.
Figure 3 is a sectional view of the main part showing the blade thickness of the mowing blade plate according to claim 5;
FIG. 14 is a sectional view showing the blade thickness of the grass cutting blade plate according to the fourth aspect, and FIG. 15 is a sectional view showing the blade thickness of the grass cutting blade plate of FIG. a... corner temporary, b, b'... mowing blade, ■... corner,
2.2゛...slanted straight edge, 3...projection, 3゛...
Back side protrusion, 4... Slope, 7... Upward slope, 11.
... Replacement blade plate, 13... Grinding reference line, l4... Convex range, 15... Concave line. 73 no Shizu-” Puq layer */#/51 Shichi/] Bu6〃-77/A? θ■■■ 7/0 procedural amendment (voluntary)
Claims (1)
部付近に角部２等分線に対して傾斜角を有する傾斜直線
縁部を形成し、この傾斜直線縁部に草刈刃を形成したこ
とを特徴とする草刈刃板。 ２ いくつかの角部を有する角板の各角部の同じ側の角
部付近に角部２等分線に対して傾斜角を有する傾斜直線
縁部を形成し、この傾斜直線縁部に草刈刃を形成し、傾
斜直線縁部の内側に研削基準線を傾斜直線縁と平行に一
定間隔を置いて複数本並設したことを特徴とする草刈刃
板。 ３ いくつかの角部を有する角板の各角部の同じ側の角
部付近に角部２等分線に対して傾斜角を有する傾斜直線
縁部を形成し、この傾斜直線縁部に刃縁が波状に連続す
る草刈刃を形成したことを特徴とする草刈刃板。 ４ いくつかの角部を有する角板の各角部の同じ側の角
部付近に角部２等分線に対して傾斜角を有する傾斜直線
縁部を形成し、この傾斜直線縁部に傾斜直線縁と交叉す
る方向に一面が凸状態で反対面が凹状態の突条を並設し
て傾斜直線縁と平行する方向の断面形状を凹凸波型に変
形せしめ、この凹凸波型に変形した傾斜直線縁部を上向
き又は下向き斜面に研削して刃縁が波状に連続する草刈
刃を形成したことを特徴とする草刈刃板。 ５ 請求項４記載の草刈刃板において、突条を並設せし
める範囲全体を板面より凸出せしめ、この凸出範囲に凹
条を凹設して凹条の裏側を凸出範囲の裏面よりも裏側へ
突出せしめて裏側突条を形成し、表側の凹条間に表側突
条を形成せしめたことを特徴とする草刈刃板。 ６ 請求項１、２、３、４、５記載の草刈刃板において
、角板の角部を角部２等分線を軸とする左右回転対称形
に形成し、双方の傾斜直線縁部に草刈刃を形成したこと
を特徴とする草刈刃板。[Claims] 1. An inclined straight edge having an inclination angle with respect to the corner bisector is formed near the corner on the same side of each corner of a corner plate having several corners, and this A mowing blade plate characterized by having a mowing blade formed on an inclined straight edge. 2. Form an inclined straight edge having an angle of inclination with respect to the corner bisector near the corner on the same side of each corner of a corner plate having several corners, and cut grass on this inclined straight edge. A mowing blade plate characterized in that a blade is formed and a plurality of grinding reference lines are arranged parallel to the inclined straight edge at regular intervals on the inside of the inclined straight edge. 3 An inclined straight edge having an inclination angle with respect to the corner bisector is formed near the corner on the same side of each corner of a square plate having several corners, and a blade is attached to this inclined straight edge. A grass cutting blade plate characterized by forming a grass cutting blade with continuous wavy edges. 4 An inclined straight edge having an inclined angle with respect to the corner bisector is formed near the corner on the same side of each corner of a square plate having several corners, and an inclined straight edge is formed on this inclined straight edge. Protrusions with one side convex and the other side concave are arranged in parallel in the direction intersecting the straight edge, and the cross-sectional shape in the direction parallel to the inclined straight edge is transformed into an uneven wave shape. A grass cutting blade plate characterized in that a grass cutting blade having a continuous wavy edge is formed by grinding an inclined straight edge into an upward or downward slope. 5. In the mowing blade plate according to claim 4, the entire area where the protrusions are arranged side by side is made to protrude from the plate surface, and the grooved line is recessed in this protruding area, so that the back side of the grooved line is made from the back side of the protruding area. A mowing blade plate characterized in that a back side protrusion is formed by protruding to the back side, and a front side protrusion is formed between the concave grooves on the front side. 6. In the mowing blade plate according to claims 1, 2, 3, 4, and 5, the corner portions of the square plate are formed in a left-right rotationally symmetrical shape with the corner bisector as an axis, and both inclined straight edges are A grass cutting blade plate characterized by forming a grass cutting blade.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1151107A JPH0315307A (en) | 1989-06-13 | 1989-06-13 | Mowing knife plate |
| KR1019890011806A KR910008441B1 (en) | 1988-09-02 | 1989-08-18 | Knife of reaper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1151107A JPH0315307A (en) | 1989-06-13 | 1989-06-13 | Mowing knife plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0315307A true JPH0315307A (en) | 1991-01-23 |
Family
ID=15511505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1151107A Pending JPH0315307A (en) | 1988-09-02 | 1989-06-13 | Mowing knife plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0315307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993004574A1 (en) * | 1991-08-30 | 1993-03-18 | Masaru Tsuda | Mowing machine, structure thereof for discharching mowed grass, and structure for replacing rotary weeder |
| US5402629A (en) * | 1991-08-30 | 1995-04-04 | Masaru; Tsuda | Mowing machine and structure for discharged mowed grass |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5534750U (en) * | 1978-08-30 | 1980-03-06 |
-
1989
- 1989-06-13 JP JP1151107A patent/JPH0315307A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5534750U (en) * | 1978-08-30 | 1980-03-06 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993004574A1 (en) * | 1991-08-30 | 1993-03-18 | Masaru Tsuda | Mowing machine, structure thereof for discharching mowed grass, and structure for replacing rotary weeder |
| US5402629A (en) * | 1991-08-30 | 1995-04-04 | Masaru; Tsuda | Mowing machine and structure for discharged mowed grass |
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