JPS61132112A - Cutter housing of power type lawnymower - Google Patents
Cutter housing of power type lawnymowerInfo
- Publication number
- JPS61132112A JPS61132112A JP59253177A JP25317784A JPS61132112A JP S61132112 A JPS61132112 A JP S61132112A JP 59253177 A JP59253177 A JP 59253177A JP 25317784 A JP25317784 A JP 25317784A JP S61132112 A JPS61132112 A JP S61132112A
- Authority
- JP
- Japan
- Prior art keywords
- housing
- cutter housing
- wall
- cutter
- lawnymower
- 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.)
- Granted
Links
Landscapes
- Harvester Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は動力式芝刈機のカッタハウジングに間するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a cutter housing for a power lawn mower.
（従来の技術）
力ｉタハウジング内に水平面内で回転するカシタブレー
ドを備え、四輪を備え、カフタブレード及び車輪をエン
ジンで駆動するようにした動力式芝刈機は実用に供され
ている。(Prior Art) A power lawn mower is in practical use, which is equipped with a cap blade that rotates in a horizontal plane within a power output housing, has four wheels, and has the cap blade and wheels driven by an engine.
従来のカッタハウジング（５０）は第５図に示される如
くで１円形のｔｉｌ！！（５１）、上壁（５２）先備え
、上壁（５２）の−側寄り部から上後傾する如くスクロ
ール状の案内部（５３）が形成され、案内部（５３）は
後部のダクト部（５０につながり、ダクト部（５４）の
案内部（５３）とは反対側の部分（５５）はフラットな
上壁（５２）と合流させるため隔！！ （５Ｂ）を急勾
配で前下傾して設け、隔壁（５Ｂ）と上壁（５２）との
間には直角に近い折曲部（５７）が形成されることとな
る。The conventional cutter housing (50) has a circular shape as shown in FIG. ! (51), the top wall (52) has a tip, and a scroll-shaped guide part (53) is formed so as to tilt upward and backward from the negative side part of the top wall (52), and the guide part (53) is a duct part in the rear part. (Connected to 50, the part (55) on the opposite side of the duct part (54) from the guide part (53) is separated to merge with the flat upper wall (52)!! (5B) is tilted forward and downward at a steep slope) A nearly right-angled bent portion (57) is formed between the partition wall (5B) and the upper wall (52).
（発明が解決しようとする問題点）
以上の従来技術は、芝排出用のダクト、案内部を形成す
るため上壁（５２）の一部に折曲部（５７）が形成され
、この部分で急激な断面変化があり、ハウジングを軽合
金等の金属で成形する場合においては素材自体が剛性１
強度が高いため実用上支障はないが、ハウジングを合成
樹脂で成形した場合には素材自体が金属に比して剛性１
強度の点で劣り、折曲部（５６）の部分に応力が集中し
、この部分剛性が不足したりして曲がったりする恐れが
あり、これを防止すべくハウジングの肉厚を大とした場
合には返って重量が大きくなり、軽量化の要請に反する
。(Problems to be Solved by the Invention) In the above conventional technology, a bent part (57) is formed in a part of the upper wall (52) in order to form a duct and a guide part for discharging grass. There is a sudden change in cross section, and when the housing is made of metal such as a light alloy, the material itself has a rigidity of 1.
There is no problem in practical use due to its high strength, but when the housing is molded from synthetic resin, the material itself has a rigidity of 1 compared to metal.
It is inferior in terms of strength, stress is concentrated at the bending part (56), and there is a risk that this part lacks rigidity and bends, and in order to prevent this, the housing wall thickness is increased. In return, the weight increases, which goes against the request for weight reduction.
本発明は以上の技術課題を解決すべくなされたものであ
る。The present invention has been made to solve the above technical problems.
（発明の目的）
未発明の目的とする処は、カッタハウジングを合成樹脂
で成形した場合において、急激な断面変化による脆弱部
をなし、剛性、強度上有利で、且つ機能性に優れる動力
式芝刈機のカッタハウジングを提供するにある。(Objective of the Invention) The object of the invention is to provide a power lawn mower which is advantageous in terms of rigidity and strength, and has excellent functionality, since when the cutter housing is molded from synthetic resin, there is no brittle part due to sudden cross-sectional changes. The cutter housing of the machine is provided.
（問題点を解決するための手段）
以との技術ＷＩＮを解決する手段は、カッタブレードを
囲むｌｉＩ壁上を覆う上壁を中央部の開口部を除いて後
上傾する如くフラットとし、土壁後部の下面の左右方向
中間部に刈り取り芝排出用ダクト部を画成する隔壁を縦
設するようにした。(Means for solving the problem) The means for solving the above technical WIN is to make the upper wall that covers the liI wall surrounding the cutter blade flat so that it slopes backwards and upwards except for the opening in the center, and A partition wall defining a duct for discharging grass clippings is vertically installed at the middle part in the left-right direction on the lower surface of the rear part of the wall.
（上記手段による作用）
と記によればハウジング上壁は左右両側ともフラットと
なり、折曲部が前後方向においては発生せず、従って土
壁部に脆弱部が発生せず、一方、隔壁を縦設することに
より排出ダクト部を形成することができ、又ハウジング
後部の剛性、強度を高めることができ、ハウジングを合
成樹脂で成形しつつ剛性１強度の点で有利なものが得ら
れ、機能的にも優れたものが得らえる。(Effects achieved by the above means) According to the description, the upper wall of the housing is flat on both the left and right sides, no bends occur in the front-rear direction, and therefore no weak parts occur in the earthen wall. This makes it possible to form a discharge duct part, and also to increase the rigidity and strength of the rear part of the housing.Although the housing is molded from synthetic resin, it is possible to obtain an advantage in terms of rigidity and strength, and it is functional. You can also get better things.
（実施例）
次に本考案の好適−実施例を添付図面に従って、４＄述
する。(Embodiments) Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
第１図は動力式芝刈４１（１）の外観を示す斜視図で１
合成樹脂で成形せるカッタハウジング（２）の四隅に左
右の前輪（３）、後輪（０の四輪を備え、ハウジング（
２）の中央部にはエンジン（５）を備え、これの周りは
エンジンカバー（８）で覆われている。ハウジング（２
）の後部左右には後上方にハンドル（７）が延設され、
又ハウジング（２）の後方に刈り取った芝を収納するグ
ラスバッグ（８）が付設されている。Figure 1 is a perspective view showing the external appearance of the power lawn mower 41 (1).
The cutter housing (2), which can be molded from synthetic resin, has four left and right front wheels (3) and rear wheels (0) at the four corners of the cutter housing (2).
2) is equipped with an engine (5) in the center, and the engine cover (8) covers the area around the engine (5). Housing (2
) has handles (7) extending rearward and upward on the left and right sides,
A grass bag (8) for storing cut grass is attached to the rear of the housing (2).
以上のカー、タハウジングは第２図、第３図に示される
如（で、カッタハウジング（２）は円形の周９（２０１
）を備え、Ｒ壁（２０１）は下に開放され、周壁（２０
１）上端部は上壁（２０２）を備え、上１！ （２０２
）中央部（２０３）は−役低く円形に成形され、上に搭
載したバーチカルエンジン（５）の縦向のクランクシャ
フト（５０１）の出力ＩＩＡ（５０２）が円形の開口部
（２０４）を通って垂下され、出力部（５０２）下端に
はカッタブレード（９）が固設され、これの上に同軸に
ディスチャージ用ファン（１０）が固設され、ファン（
１０）の周囲を内情ｍ （２０５）で覆っている。エン
ジン（５）はシリンダ（５０３）が横向でクランクシャ
フト（５０１）が縦向でクランクシャツ） （５０１）
の１端部には冷却ファン（５０４）が固設され１以上の
エンジンの周りをカバー（８）で覆い、カバー（８）中
央部上にはりコイルスタータプーリ（＋１）が設けられ
ている０以上のエンジン（５）の垂下した出力部（５０
２）でカッタブレード（８）を水平面内で回転駆動せし
め芝刈ｆｖ−業を行うとともに同軸のファン（１０）を
回転駆動せしめ、芝を排出するディスチャージ川の風を
生成し、空気は開口部（２Ｇ４）から内筒部（２０５）
内に引き込んでハウジング（２）の後部の排出ダクト部
（２０Ｂ）へ刈り取った芝を移送する。尚図中（５０８
）はクランクシャフト（５０１）で駆動される後輪（４
）駆動用の中間軸である。The cutter housing (2) has a circular circumference 9 (201
), the R wall (201) is open downward, and the peripheral wall (20
1) The upper end is provided with an upper wall (202), and the upper 1! (202
) The central part (203) is formed into a low circular shape, and the output IIA (502) of the vertical crankshaft (501) of the vertical engine (5) mounted above passes through the circular opening (204). A cutter blade (9) is fixed to the lower end of the output part (502), and a discharge fan (10) is coaxially fixed on the cutter blade (9).
10) is covered with internal information m (205). The engine (5) has a horizontal cylinder (503) and a vertical crankshaft (501) (crank shirt) (501)
A cooling fan (504) is fixedly installed at one end of the engine, one or more engines are covered with a cover (8), and a coil starter pulley (+1) is installed on the center of the cover (8). The hanging output part (50
In 2), the cutter blade (8) is rotated in a horizontal plane to perform lawn mowing work, and the coaxial fan (10) is rotated to generate a discharge river wind to discharge the grass, and the air is passed through the opening ( 2G4) to the inner cylinder part (205)
The cut grass is transferred to the discharge duct section (20B) at the rear of the housing (2). In the figure (508
) is a rear wheel (4) driven by a crankshaft (501).
) It is an intermediate shaft for driving.
以上のハウジング（２）の上壁（２０２）は中央部（２
０３）が−役低く円形をなし、これの中央部に既述の開
口（２０４）が形成され、中央部（２０３）の周囲は起
壁部（２０７）として成形されている。土壁（２０２）
の左右の部分（２０８）、（２０８）は後上傾する如く
フラー／ ）に形成され、前記起壁部（２０７）の上端
部に連続し、最も高位の後部（２１Ｇ）へ幅方向に連続
する。The upper wall (202) of the above housing (2) is
03) has a low circular shape, the aforementioned opening (204) is formed in the center thereof, and the periphery of the center portion (203) is formed as a raised wall portion (207). Earthen wall (202)
The left and right portions (208), (208) are formed in a fuller/ ) so as to tilt rearward and upward, and continue to the upper end of the raised wall portion (207) and continue in the width direction to the highest rear portion (21G). do.
周壁（２０１）は第３図の底面図で示す如く円形をなし
、後部（２１０）の下面の幅方向中間部には左右に区画
するための隔壁（２１１）が縦設され、−側を排出ダク
） （２１２）とし、ダク） （２１２）は隔壁（２１
１）が斜めに設けられ、これの延長部（２１３）が中央
部の接線方向に形成され、周壁（２０１）内をスクロー
ル状に形成し、片側に案内部（２１４）を形成し カッ
タブレード（３）は図中反時計方向に回転し、既述のフ
ァン（ｌＯ）で刈り取った芝を案内部（２１４） ダ
ク） （２１２）に送り込み、グラスバッグ（８）に芝
を排出収納させる。尚第３図は具体的なハウジングの例
を示し１図中（２１５）は前部のリブ、（２１，８）、
（２１ｆｉ）は両側部のリブである。The peripheral wall (201) has a circular shape as shown in the bottom view of FIG. 3, and a partition wall (211) is vertically provided in the middle part of the lower surface of the rear part (210) in the width direction to partition the left and right parts, and the - side is used for exhaust. (212), and (212) is the bulkhead (21).
1) is provided diagonally, an extension part (213) of this is formed in the tangential direction of the central part, the inside of the peripheral wall (201) is formed in a scroll shape, a guide part (214) is formed on one side, and the cutter blade ( 3) rotates counterclockwise in the figure, and the aforementioned fan (lO) sends the cut grass to the guide section (214) (212), and the grass is discharged and stored in the grass bag (8). Fig. 3 shows a specific example of the housing, and in Fig. 1 (215) is the front rib, (21, 8),
(21fi) are ribs on both sides.
（発明の効果）
以上で明らかな如く本発明によれば、カッタハウジング
の上壁の左右に従来の如く一方が低く、他方が高く、低
い部分と後部との間に没差に起因する折曲部がな（、左
右がフラットで後部と連続しているため脆弱部がなく、
従って合成樹脂でカッタハウジングを成形したとしても
剛性、強度の弘で有利なものが得られ、且つ隔壁でダク
ト部を形成し、スクロール状の案内部も形成でさるため
機能性の点でも充分なものが得られる。(Effects of the Invention) As is clear from the above, according to the present invention, one side of the upper wall of the cutter housing is low and the other side is high, and there is no bending caused by the depression between the lower part and the rear part. The left and right sides are flat and continuous with the rear, so there are no weak parts.
Therefore, even if the cutter housing is molded from synthetic resin, it is advantageous in terms of rigidity and strength, and since the duct part is formed by the partition wall and the scroll-shaped guide part is also formed, it is sufficient in terms of functionality. You can get something.
図面は未発明の一実施例を示すもので、第１図は動力式
芝刈機の外観を示す斜視図、第２図はカッタハウジング
の外観を模式的に示した斜視図、第３図はカッタハウジ
ングの具体的−例を示す１氏面図、第４図は芝刈機の一
例を示す縦断側面図、第５図は徒来のカッタハウジング
の外観斜視図である。
尚図面申（１）は芝刈機、（２）はカッタハウジング、
（２０１）は周壁、 （２０２）は上壁、 （２０８
）、（２０９）は左右の部分 （２１０）は後部、（２
１１）は隔壁である。The drawings show an embodiment of the invention, in which Fig. 1 is a perspective view showing the appearance of a power lawn mower, Fig. 2 is a perspective view schematically showing the appearance of the cutter housing, and Fig. 3 is a perspective view showing the appearance of the cutter housing. 1 is a plan view showing a specific example of the housing, FIG. 4 is a vertical sectional side view showing an example of a lawn mower, and FIG. 5 is an external perspective view of a conventional cutter housing. In addition, drawing (1) is the lawn mower, (2) is the cutter housing,
(201) is the peripheral wall, (202) is the upper wall, (208
), (209) are the left and right parts, (210) is the rear part, (2
11) is a partition wall.
Claims (1)
ドをエンジンにより水平面内で回転駆動し、芝刈り取り
を行うようにした動力式芝刈機のカッタハウジングにお
いて、前記ハウジングを合成樹脂で形成し、該ハウジン
グの上壁の左右の部分をフラットに連続して形成すると
ともに、上壁後方の下面の左右方向中間部に排出ダクト
を画成するための隔壁を縦設したことを特徴とする動力
式芝刈機のカッタハウジング。In a cutter housing for a power lawn mower, the cutter blade surrounded by a cutter housing is rotated in a horizontal plane by an engine to cut grass, and the housing is made of synthetic resin. A power lawn mower characterized in that the left and right parts of the upper wall are formed continuously in a flat manner, and a partition wall for defining a discharge duct is vertically installed in the middle part in the left and right direction of the lower surface at the rear of the upper wall. cutter housing.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59253177A JPS61132112A (en) | 1984-11-30 | 1984-11-30 | Cutter housing of power type lawnymower |
| GB08529434A GB2167636B (en) | 1984-11-30 | 1985-11-29 | Cutter housing for power-driven lawn mower |
| DE19853542276 DE3542276A1 (en) | 1984-11-30 | 1985-11-29 | KNIFE HOUSING FOR A MOTOR DRIVEN LAWN MOWER |
| FR858517755A FR2573954B1 (en) | 1984-11-30 | 1985-11-29 | HOUSING FOR THE CUTTING DEVICE OF A MOTORIZED LAWN MOWER |
| US06/803,720 US4711077A (en) | 1984-11-30 | 1985-12-02 | Cutter housing for power-driven lawn mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59253177A JPS61132112A (en) | 1984-11-30 | 1984-11-30 | Cutter housing of power type lawnymower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61132112A true JPS61132112A (en) | 1986-06-19 |
| JPH0437681B2 JPH0437681B2 (en) | 1992-06-22 |
Family
ID=17247609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59253177A Granted JPS61132112A (en) | 1984-11-30 | 1984-11-30 | Cutter housing of power type lawnymower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61132112A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5548308A (en) * | 1978-10-05 | 1980-04-07 | Matsushita Electric Works Ltd | Gathering device for lawn mower |
| JPS5774222U (en) * | 1980-10-23 | 1982-05-07 | ||
| JPS5962738U (en) * | 1982-10-20 | 1984-04-25 | 本田技研工業株式会社 | Mowing height adjustment device for lawn mowers |
-
1984
- 1984-11-30 JP JP59253177A patent/JPS61132112A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5548308A (en) * | 1978-10-05 | 1980-04-07 | Matsushita Electric Works Ltd | Gathering device for lawn mower |
| JPS5774222U (en) * | 1980-10-23 | 1982-05-07 | ||
| JPS5962738U (en) * | 1982-10-20 | 1984-04-25 | 本田技研工業株式会社 | Mowing height adjustment device for lawn mowers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0437681B2 (en) | 1992-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |