JPH0441816Y2

JPH0441816Y2 -

Info

Publication number: JPH0441816Y2
Application number: JP19193186U
Authority: JP
Priority date: 1986-12-12
Filing date: 1986-12-12
Publication date: 1992-10-01
Also published as: JPS6395451U

Description

【考案の詳細な説明】〔考案の利用分野〕本考案は、草や木の小枝等を切断する刈込機に
関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a mower for cutting grass, tree twigs, etc.

[Background of the idea]

従来の刈込機を第７〜第１１図により説明す
る。 A conventional mowing machine will be explained with reference to FIGS. 7 to 11.

第７図は、刈込機の全体斜視図、第８図は、可
動刃の部分斜視図、第９図は、可動刃の上面図、
第１０図は、Ａ２−Ａ２線断面図、第１１図は、
Ｂ２−Ｂ２線断面図である。１は刈込機本体、２
はスイツチ、３はサブハンドル、４はプロテクタ
で、５は上可動刃、６は下可動刃であり、これら
は、上補助板７と下補助板８とによつて挟持され
ている。すなわち従来の刈込機は、第８図に示し
てあるように長手方向の両側に、複数の切刃を形
成した上可動刃５とこれに対応する同様な下可動
刃６とが上下に接触状態を保ちながら、長手方向
に交互に往復動する摺動動作により、上可動刃５
と下可動刃６との切刃の前後間隔内に挿入された
草や木の小枝等を切断刈込みするものである。上
可動刃５と下可動刃６は、第９〜第１１図に示し
てあるように、左右の刃においては、刃のピツチ
P₃、刃長さl₃そして刃付け角度ｒが同じである。 FIG. 7 is an overall perspective view of the mower, FIG. 8 is a partial perspective view of the movable blade, and FIG. 9 is a top view of the movable blade.
Fig. 10 is a sectional view taken along the line A2-A2, and Fig. 11 is a sectional view taken along the line A2-A2.
It is a sectional view taken along the line B2-B2. 1 is the mower body, 2
3 is a switch, 3 is a sub-handle, 4 is a protector, 5 is an upper movable blade, and 6 is a lower movable blade, which are held between an upper auxiliary plate 7 and a lower auxiliary plate 8. In other words, as shown in FIG. 8, in the conventional mowing machine, an upper movable blade 5 having a plurality of cutting edges formed on both sides in the longitudinal direction and a corresponding lower movable blade 6 are in vertical contact with each other. The upper movable blade 5
This is for cutting and trimming grass, tree twigs, etc. inserted within the front and back spacing between the cutting blades and the lower movable blade 6. As shown in FIGS. 9 to 11, the upper movable blade 5 and the lower movable blade 6 have different pitches between the left and right blades.
P ₃ , the blade length l ₃ and the cutting angle r are the same.

この構造では、刃のピツチP₃がある程度ある
ため、その分、草木を刈り込んだ時、特に細くて
柔かい草木の場合、草木が横に倒れてむしれ切れ
したりして切り口が一様ではなかつた。また、太
い枝でも細い草木でも一緒に切断するため、刃の
寿命が落ちたり、しいては本体寿命を低下させる
恐れがあつた。また、これ以上の仕上げをするこ
とは上記した理由から難しかつた。 With this structure, the blade has a certain pitch P ₃ , so when cutting plants, especially thin and soft plants, the cutting may not be uniform as the plants may fall sideways and get torn. Ta. In addition, since both thick branches and thin plants are cut at the same time, there is a risk that the lifespan of the blade will be shortened, and the lifespan of the blade itself will also be shortened. Further, it was difficult to achieve a higher finish than this for the reasons mentioned above.

[Purpose of invention]

本考案の目的は、上記した難点を解消し、草木
の刈込みで、荒仕上げ刈込みと仕上げ切込みの使
い分けが、出来ることを可能にした刈込機を提供
するものである。 The purpose of the present invention is to provide a mower that eliminates the above-mentioned difficulties and allows for selective use of rough cutting and finishing cuts when cutting plants.

[Summary of the idea]

本考案は、可動刃の長手方向の左右についてい
る切刃について着目し、効果的な刈込みが出来る
ように、形状を工夫したものである。 The present invention focuses on the cutting blades on the left and right sides of the movable blade in the longitudinal direction, and devises the shape to enable effective cutting.

[Example of idea]

本考案の刈込機の一実施例を第１〜第６図によ
つて説明する。 An embodiment of the mower of the present invention will be described with reference to FIGS. 1 to 6.

第１図は刈込機の全体斜視図、第２図は可動刃
部分の斜視図、第３図は可動刃部の上面図、第４
図は切刃Ａ１−Ａ１線断面図、第５図は切刃Ｂ１
−Ｂ１線の断面図、第６図は草木を刈込む時の全
体斜視図である。 Figure 1 is an overall perspective view of the mower, Figure 2 is a perspective view of the movable blade, Figure 3 is a top view of the movable blade, and Figure 4 is a perspective view of the movable blade.
The figure is a cross-sectional view of the cutting edge A1-A1, and Figure 5 is the cutting edge B1.
-B1 line sectional view, FIG. 6 is an overall perspective view when cutting plants.

刈込機の上可動刃５、下可動刃６の長手方向の
左右についている切刃５ａ，６ａの形状を変え
る。片側は刃と刃のピツチP1は太枝が入る大さ
にし、反対側はP1よりも小さい刃ピツチP2をと
る。また、刃の長さl₂も1₃より小さくとり、ま
た、切刃の刃付け角度も、片側の刃付け角度αを
反対側の角度βよりも大きくする。このように、
刈込機の上可動刃５、下可動刃６の長手方向の両
側についている切刃５ａ，６ａの形状を左右で変
える。このように可動刃の形状を変えることによ
り、第３図から解るように、片側の刃ピツチP2
の切刃の方は、刃ピツチが狭いので草木が横に倒
れることが少なく、また、刃付け角度αも大きい
ので、切り口が良い。また、太い枝も入りにくい
ので刃こぼれや、本体側の負担が軽くてすむ。 The shapes of cutting blades 5a and 6a attached to the left and right in the longitudinal direction of the upper movable blade 5 and lower movable blade 6 of the mower are changed. On one side, the pitch between the blades, P1, is large enough to accommodate a thick branch, and on the other side, the pitch is smaller than P1, P2. Further, the length l ₂ of the blade is also set smaller than 1 ₃ , and the cutting angle of the cutting blade is set so that the cutting angle α on one side is larger than the angle β on the opposite side. in this way,
The shapes of cutting blades 5a and 6a attached to both sides of the upper movable blade 5 and lower movable blade 6 in the longitudinal direction of the mowing machine are changed on the left and right sides. By changing the shape of the movable blade in this way, as can be seen from Figure 3, the blade pitch on one side is P2.
The cutting blade has a narrow blade pitch, so plants are less likely to fall sideways, and the cutting angle α is large, so the cutting edge is good. Also, since thick branches are difficult to penetrate, there is no need to worry about spilling the blade and reducing the burden on the main body.

荒仕上げをするのには、反対側の切刃を使用す
る。第６図のように、刈込む時は、最初にＨ方向
を刈込んで荒仕上げをして、逆方向Ｊに戻す時に
上記した理由で刈込み面が仕上がるので、一台で
効果的な刈込みが可能となる。 Use the opposite cutting edge for rough finishing. As shown in Figure 6, when mowing, first cut in the H direction to give a rough finish, and when returning to the opposite direction J, the mowed surface is finished for the reasons mentioned above, allowing effective mowing with one machine. becomes.

[Effect of idea]

以上説明したように、本考案の刈込機によれ
ば、可動刃の長手方向の左右の切刃を仕上げ用
と、荒仕上げ用と分けたので、荒仕上げ用の刃ピ
ツチの大きい側の切刃で草木を刈込み、折り返し
もう一方の刃ピツチの小さい側の切刃で刈込むこ
とによつて、切断部の不揃い部分をなくし、良好
な仕上げ面を形成することができる。 As explained above, according to the mowing machine of the present invention, the left and right cutting edges in the longitudinal direction of the movable blade are divided into finishing and rough finishing, so the cutting edge on the side with a larger blade pitch is used for rough finishing. By cutting the plants with the blade, then turning back and cutting with the smaller cutting edge of the other blade, you can eliminate irregularities in the cut area and form a good finished surface.

[Brief explanation of the drawing]

第１〜第６図は本考案の一実施例を示し、第１
図は刈込機の全体斜視図、第２図は可動刃の斜視
図、第３図は可動刃の上面図、第４図はＡ１−Ａ
１断面図、第５図はＢ１−Ｂ１線断面図、第６図
は刈込み時の全体斜視図、第７〜第１１図は従来
の刈込機の例を示し、第７図は刈込機の全体斜視
図、第８図は可動刃の部分斜視図、第９図は可動
刃の上面図、第１０図はＡ２−Ａ２線断面図、第
１１図はＢ２−Ｂ２線断面図。１……本体、２……スイツチ、３……サブハン
ドル、４……プロテクタ、５……上可動刃、６…
…下可動刃、７……上補助板、８……下補助板、
９……Ａ１−Ａ１線断面図、１０……Ｂ１−Ｂ１
線断面図、１１……草木、P₁……刃と刃のピツ
チ、P₂……刃と刃のピツチ、l₁……刃長さ、l₂…
…刃長さ、α……刃付け角度、β……刃付け角
度、Ｈ……刈込方向、Ｊ……刈込方向、５ａ……
切刃、６ａ……切刃。 1 to 6 show an embodiment of the present invention.
The figure is an overall perspective view of the mower, Figure 2 is a perspective view of the movable blade, Figure 3 is a top view of the movable blade, and Figure 4 is A1-A.
1 sectional view, FIG. 5 is a sectional view taken along the line B1-B1, FIG. 6 is an overall perspective view during mowing, FIGS. 7 to 11 show examples of conventional mowers, and FIG. 8 is a partial perspective view of the movable blade, FIG. 9 is a top view of the movable blade, FIG. 10 is a sectional view taken along line A2-A2, and FIG. 11 is a sectional view taken along line B2-B2. 1...Main body, 2...Switch, 3...Sub handle, 4...Protector, 5...Upper movable blade, 6...
...Lower movable blade, 7...Upper auxiliary plate, 8...Lower auxiliary plate,
9...A1-A1 line sectional view, 10...B1-B1
Line cross-sectional view, 11...Plants, P ₁ ...Pitch between the blades, P ₂ ...Pitch between the blades, l ₁ ...Blade length, l ₂ ...
...Blade length, α...Blade angle, β...Blade angle, H...Mowing direction, J...Mowing direction, 5a...
Cutting blade, 6a... Cutting blade.

Claims

[Claim for Utility Model Registration] An upper movable blade with a plurality of cutting edges formed on both sides in the longitudinal direction and a corresponding lower movable blade are alternately rotated in the longitudinal direction by a rotational drive source while maintaining vertical contact. In a mowing machine that slides back and forth to trim vegetation, the blade pitch of the cutting blade on one side of the movable blade is made smaller than the blade pitch of the cutting blade on the other side,
A movable blade for a mowing machine, characterized in that the cutting angle of the cutting blade on the side with the smaller blade pitch is set to be more acute than the cutting angle on the other side.