JPH0411461Y2 - - Google Patents
Info
- Publication number
- JPH0411461Y2 JPH0411461Y2 JP19501684U JP19501684U JPH0411461Y2 JP H0411461 Y2 JPH0411461 Y2 JP H0411461Y2 JP 19501684 U JP19501684 U JP 19501684U JP 19501684 U JP19501684 U JP 19501684U JP H0411461 Y2 JPH0411461 Y2 JP H0411461Y2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- support
- cutting
- air
- lower side
- 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.)
- Expired
Links
- 244000025254 Cannabis sativa Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、駆動回転される刃体支持体に、刃体
を、前記刃体支持体の回転軸芯と平行な軸芯周り
で揺動自在に枢着した刈刃構造に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is characterized in that a blade support is driven and rotated, and a blade is oscillated around an axis parallel to the axis of rotation of the blade support. It relates to a mower blade structure that is freely pivoted.
かかる刈刃構造においては、刃体に他物が接当
した場合に支持体回転方向上手側に刃体を逃がす
ことができるようにする状態で、刃体を切断用位
置に保持させるに、刃体支持体の回転による遠心
力によつて切断用位置に保持させていた。
In such a cutting blade structure, the blade is held in a cutting position in a state where the blade can escape upward in the direction of rotation of the support when another object comes into contact with the blade. It was held in the cutting position by centrifugal force due to rotation of the body support.
〔考案が解決しようとする問題点〕
しかしながら、上記のように、刃体支持体の回
転による遠心力のみでは、刃体の切断用位置への
保持力が不十分なため、例えば水分を含んだ重い
芝等を刈取る際に、刃体が支持体回転方向下手側
に逃げてしまい、刈残しを生じたり刈跡が不揃い
になる不都合があつた。[Problem to be solved by the invention] However, as mentioned above, the centrifugal force generated by the rotation of the blade support alone is insufficient to hold the blade in the cutting position. When mowing heavy grass, etc., the blade escapes to the lower side in the direction of rotation of the support, resulting in inconveniences such as leaving uncut areas or uneven cutting marks.
本考案は上記実情に鑑みてなされたものであつ
て、その目的は、簡単な改造で、刃体に他物が接
当すれば、刃体を従来通り支持体回転方向上手側
に逃がすようにしながらも、刃体の切断用位置へ
の保持力を高めるようにする点にある。 The present invention was developed in view of the above-mentioned circumstances, and its purpose is to make a simple modification so that when another object comes into contact with the blade, the blade escapes to the upper side in the rotating direction of the support. However, the point is to increase the holding power of the blade in the cutting position.
本考案の特徴構成は、前記刃体が切断用位置か
ら支持体回転方向下手側に揺動することを受止め
るストツパーを、前記刃体支持体に設けると共
に、空気受止用羽根を、前記刃体支持体の回転に
伴い前記刃体を空気圧にて支持体回転方向下手側
に付勢するように、前記刃体に連設した点にあ
り、その作用及び効果は次の通りである。
The characteristic configuration of the present invention is that the blade support is provided with a stopper that prevents the blade from swinging downward from the cutting position in the direction of rotation of the support, and air catching blades are provided on the blade support. The blade body is connected to the blade body so as to urge the blade body downward in the rotating direction of the support body using air pressure as the body support rotates, and its functions and effects are as follows.
すなわち、刃体支持体の回転に伴なつて、空気
受止用羽根が受ける空気圧により刃体を支持体回
転方向下手側に付勢すると共に、前記付勢力によ
り刃体が切断用位置よりも支持体回転方向下手側
へ移動されることをストツパーにより抑制して、
刃体を前記切断用位置へ保持するようにしてい
る。
That is, as the blade support rotates, the air pressure applied to the air-receiving blades biases the blade toward the lower side in the rotating direction of the support, and the biasing force causes the blade to be supported beyond the cutting position. The stopper prevents the body from being moved downward in the direction of rotation,
The blade body is held in the cutting position.
したがつて、既設の刃体及び刃体支持体夫々に
空気受止用羽根及びストツパーを設けるだけの簡
単な改造で、刃体に他物が接当すれば、従来通り
支持体回転方向上手側に逃がすようにしながら
も、刃体の切断用位置への保持力を高めることが
できるので、たとえ重い芝であつても刈残しを生
じることなく、あるいは刈跡が不揃いになること
なく良好に刈取作業を行なうことができるのであ
り、もつて、一層便利に使用できる刈刃構造を得
るに至つた。
Therefore, by simply modifying the existing blade and blade support by installing air-catching vanes and stoppers, if another object comes into contact with the blade, the upper side of the support in the rotating direction can be moved as before. The ability to hold the blade in the cutting position can be increased while allowing the blade to escape to the cutting position, so even heavy grass can be cut well without leaving uncut areas or leaving uneven mowing marks. As a result, we have achieved a cutting blade structure that is even more convenient to use.
以下、本考案の実施例を図面に基づいて説明す
る。
Hereinafter, embodiments of the present invention will be described based on the drawings.
第４図に示すように、左右一対の前車輪１，１
及び後車輪２，２の夫々を遊転状態で取付け、か
つ、刈刃Ｋを備えた刃体支持体４を縦軸芯周りで
回動自在に内装した機体フレーム兼用刈刃ハウジ
ング５の上側に、前記支持体４を駆動するエンジ
ン６を取付けると共に、前記刈刃ハウジング５の
後部に、操縦ハンドル７及び芝収納容器８を付設
して、歩行型芝刈機を構成してある。 As shown in Fig. 4, a pair of left and right front wheels 1, 1
The rear wheels 2, 2 are each mounted in an idle state, and a blade support 4 equipped with a cutting blade K is mounted on the upper side of a cutting blade housing 5 that also serves as a machine frame and has a blade support 4 equipped with the cutting blade K so as to be rotatable around the vertical axis. , an engine 6 for driving the support body 4 is attached, and a control handle 7 and a grass storage container 8 are attached to the rear of the cutting blade housing 5 to constitute a walk-behind lawn mower.
前記刈刃構造について説明する。 The above-mentioned cutting blade structure will be explained.
第１図乃至第３図に示すように、駆動回転され
る円盤状の刃体支持体４の周端部付近に、刃部３
ａを備えた２枚の刃体３，３を、前記刃部３ａが
支持体外方側に突出された状態で、刃体支持体４
の回転軸芯と平行な軸芯周りで揺動自在にボルト
９で枢着して、支持体４の回転による遠心力で前
記刃体３を切断用位置に保持させるように構成し
てある。そして、支持体４の回転に伴なう空気圧
を受け止めて、前記刃体３を支持体回転方向下手
側に付勢するための空気受止用羽根Ａを、夫々の
刃体３を折曲げることにより形成すると共に、前
記羽根Ａによる付勢力により刃体３が切断用位置
よりも支持体回転方向下手側へ移動されることを
抑制するためのストツパーＳを、支持体４に溶接
等により設けて、前記支持体４の回転による遠心
力だけでなく、支持体４の回転力に伴なう空気圧
をも利用して刃体３の切断用位置への保持力を高
めるようにしてある。 As shown in FIGS. 1 to 3, a blade portion 3 is located near the peripheral end of the disk-shaped blade support 4 that is driven and rotated.
The two blade bodies 3, 3 equipped with
The blade body 3 is pivotally mounted by a bolt 9 so as to be swingable around an axis parallel to the rotation axis of the support body 4, and the blade body 3 is held in a cutting position by centrifugal force caused by the rotation of the support body 4. Then, each of the blades 3 is bent to receive the air pressure caused by the rotation of the support 4 and urge the blade 3 toward the lower side in the rotational direction of the support. At the same time, a stopper S is provided on the support body 4 by welding or the like to prevent the blade body 3 from being moved downward in the rotational direction of the support body from the cutting position due to the biasing force of the blade A. In addition to the centrifugal force caused by the rotation of the support 4, the air pressure accompanying the rotational force of the support 4 is also used to increase the holding force of the blade 3 in the cutting position.
尚、前記支持体４の回転中、前記刃体３に他物
が接当した場合には、その刃体３を支持体回転方
向上手側に逃がすことができることは勿論であ
る。 It should be noted that, when the blade 3 comes into contact with another object while the support 4 is rotating, it is of course possible to release the blade 3 to the upper side in the rotation direction of the support.
前記実施例では、支持体４に２枚の刃体３を取
付けたが、１枚あるいは３枚以上の刃体を取付け
てもよい。
In the embodiment described above, two blade bodies 3 are attached to the support body 4, but one blade body or three or more blade bodies may be attached.
又、前記実施例では、空気受止用羽根Ａと刃体
３とを一体形成したが、前記羽根Ａと刃体３とを
夫々別体形成して、それらを連設するようにして
もよい。 Further, in the above embodiment, the air-receiving blade A and the blade body 3 are integrally formed, but the blade A and the blade body 3 may be formed separately and arranged in series. .
さらに、前記実施例では、刃体支持体４に円盤
状のものを用いたが、長方形あるいは三角形のも
のでもよく、その形状は各種のものを用いること
ができる。 Further, in the above embodiment, the blade support 4 is disk-shaped, but it may be rectangular or triangular, and various shapes can be used.
図面は本考案に係る刈刃構造の実施例を示し、
第１図は刈刃構造を示す平面図、第２図は刃体の
取付部を示す斜視図、第３図は第１図における
−線断面図、第４図は芝刈機の全体側面図であ
る。
３……刃体、４……刃体支持体、Ａ……空気受
止用羽根、Ｓ……ストツパー。
The drawings show an example of the cutting blade structure according to the present invention,
Figure 1 is a plan view showing the mowing blade structure, Figure 2 is a perspective view showing the attachment part of the blade, Figure 3 is a sectional view taken along the - line in Figure 1, and Figure 4 is an overall side view of the lawn mower. be. 3...Blade body, 4...Blade body support, A...Air catching blade, S...Stopper.
Claims (1)
前記刃体支持体４の回転軸芯と平行な軸芯周り
で支持体回転方向下手側及び上手側に揺動自在
に枢着した刈刃構造であつて、前記刃体３が切
断用位置から前記刃体支持体４の回転方向下手
側に揺動することを受止めるストツパーＳを、
前記刃体支持体４に設けると共に、空気受止用
羽根Ａを、前記刃体支持体４の回転に伴い前記
刃体３を空気圧にて支持体回転方向下手側に付
勢するように、前記刃体３に連設してある刈刃
構造。 ２ 前記刃体３及び前記空気受止用羽根Ａを一体
形成してある実用新案登録請求の範囲第１項に
記載の刈刃構造。[Claims for Utility Model Registration] 1. The blade 3 is mounted on the blade support 4 which is driven and rotated.
The cutting blade has a structure in which the cutting blade is pivotally pivoted to the lower side and the upper side in the rotating direction of the support around an axis parallel to the rotation axis of the blade support 4, and the blade 3 is pivoted from the cutting position to the lower side and the upper side in the rotating direction of the support. A stopper S that receives the swinging of the blade support 4 toward the lower side in the rotational direction,
The blade support 4 is provided with air-receiving blades A so as to urge the blade 3 downward in the rotational direction of the support with air pressure as the blade support 4 rotates. A cutting blade structure connected to the blade body 3. 2. The cutting blade structure according to claim 1, wherein the blade body 3 and the air catching blade A are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19501684U JPH0411461Y2 (en) | 1984-12-22 | 1984-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19501684U JPH0411461Y2 (en) | 1984-12-22 | 1984-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61108134U JPS61108134U (en) | 1986-07-09 |
| JPH0411461Y2 true JPH0411461Y2 (en) | 1992-03-23 |
Family
ID=30752505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19501684U Expired JPH0411461Y2 (en) | 1984-12-22 | 1984-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411461Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802766B1 (en) * | 1999-12-23 | 2002-09-27 | Kuhn Sa | CUTTING ELEMENT OF A ROTATING PLANT CUTTING MACHINE AND ROTATING PLANT CUTTING MACHINE COMPRISING SUCH A CUTTING ELEMENT |
-
1984
- 1984-12-22 JP JP19501684U patent/JPH0411461Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61108134U (en) | 1986-07-09 |
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