JPH05161411A - Walking-type lawn mower - Google Patents
Walking-type lawn mowerInfo
- Publication number
- JPH05161411A JPH05161411A JP33372091A JP33372091A JPH05161411A JP H05161411 A JPH05161411 A JP H05161411A JP 33372091 A JP33372091 A JP 33372091A JP 33372091 A JP33372091 A JP 33372091A JP H05161411 A JPH05161411 A JP H05161411A
- Authority
- JP
- Japan
- Prior art keywords
- cutter housing
- cutter
- lawn mower
- operation knob
- height
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/74—Cutting-height adjustment
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D2101/00—Lawn-mowers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は刈高さが調節可能な歩行
式芝刈機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walk-behind lawn mower having an adjustable cutting height.
【０００２】[0002]
【従来の技術】従来歩行式芝刈機において、刈高さ調節
を行うためのノブと、手の位置決めをするハンドグリッ
プはカッタハウジングの後方の上部中央寄りに設けられ
る（欧州特許第００４７５０２号公報参照）。2. Description of the Related Art In a conventional walking lawn mower, a knob for adjusting a cutting height and a handgrip for positioning a hand are provided in the rear of a cutter housing near an upper center (see European Patent No. 0047502). ).
【０００３】[0003]
【発明が解決しようとする課題】ところで前記歩行式芝
刈機において、刈高さの調節を行うには作業者が一方の
手でカッタハウジング中央寄りのハンドグリップを握り
ながらその指で操作ノブを操作し、その片手でカッタハ
ウジングを上下動して高さ調節をするため、不自然な姿
勢でその調整をすることになって余分の労力を費やし、
また芝刈機全体の外観上の体裁がよくないという不具合
があった。In the above-mentioned walk-behind lawnmower, an operator operates the operating knob with his / her finger while holding the handgrip near the center of the cutter housing with one hand in order to adjust the cutting height. However, since the height of the cutter housing is adjusted by moving the cutter housing up and down with one hand, the adjustment is made in an unnatural posture, and extra effort is spent.
In addition, there was a problem that the appearance of the entire lawn mower was not good.
【０００４】本発明はかかる実情にかんがみてなされた
もので、作業者による刈高さ調節が容易であり、また全
体の外観上の体裁のよい歩行式芝刈機を提供することを
目的とするものである。The present invention has been made in view of the above circumstances, and an object thereof is to provide a walk-behind lawnmower in which the cutting height can be easily adjusted by an operator and the overall appearance is good. Is.
【０００５】[0005]
【課題を解決するための手段】前記目的達成のため、本
発明の特徴とするところは、カッタハウジングの前，後
部にそれぞれ前，後車輪を懸架するとともにその中央部
にブレードカッタを駆動するための原動機を搭載し、ま
たその一側部に芝放出口を、その後部に操作ハンドルを
設けてなる、歩行式芝刈機において、前記カッタハウジ
ングの、芝放出口と反対側上縁後部に、該カッタハウジ
ングに設けられる刈高調節装置の操作ノブを配設し、こ
の操作ノブに沿って前記カッタハウジングの側縁部に指
差込口を開設してなる。To achieve the above object, the present invention is characterized in that front and rear wheels are suspended at the front and rear portions of a cutter housing, respectively, and a blade cutter is driven at the central portion thereof. In a walk-behind lawn mower, which is equipped with a prime mover of 1, a turf discharge port on one side thereof, and an operation handle provided on the rear side thereof, in the cutter housing, at the rear of the upper edge opposite to the turf discharge port, An operation knob of a cutting height adjusting device provided in the cutter housing is arranged, and a finger insertion opening is formed at a side edge portion of the cutter housing along the operation knob.
【０００６】[0006]
【実施例】以下、図１〜５を参照して本発明の好適な一
実施例について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIGS.
【０００７】図１は本発明装置を備えた芝刈機の全体斜
視図であって、この図において符号１で示される、芝刈
機のカッタハウジングの前部には一対の前車輪Ｗｆ，Ｗ
ｆが、またその後部に一対の後車輪Ｗｒ，Ｗｒが懸架さ
れる。カッタハウジング１の中央部にはバーチカル型エ
ンジンＥが搭載され、該エンジンＥの上方突出部はエン
ジンカバーＣにより被覆される。またカッタハウジング
１の後部両側には後方に向って後上りに延びる操作ハン
ドルＨが設けられ、さらに該カッタハウジング１の後部
には、刈り取られた芝を収容するためるグラスバッグＢ
が設けられる。FIG. 1 is an overall perspective view of a lawnmower equipped with the device of the present invention. A pair of front wheels Wf, W are provided at the front of a cutter housing of the lawn mower, which is designated by reference numeral 1 in this figure.
f, and a pair of rear wheels Wr, Wr are suspended at the rear portion thereof. A vertical engine E is mounted in the center of the cutter housing 1, and an upper cover of the engine E is covered with an engine cover C. Further, on both sides of the rear part of the cutter housing 1, operation handles H extending rearward and upward are provided, and at the rear part of the cutter housing 1, a grass bag B for storing cut grass.
Is provided.
【０００８】図２は歩行式芝刈機の要部平面図、図３は
図２の３−３線に沿う断面図、図４は刈高さ調節装置の
側面図、図５は図４の一部の拡大図である。2 is a plan view of a main part of a walk-behind lawn mower, FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, FIG. 4 is a side view of a cutting height adjusting device, and FIG. It is an enlarged view of a part.
【０００９】図２，３に示すようにカッタハウジング１
の中央部は中空円筒状に形成され、その下部に下面を開
放したカッタ室３が形成され、該カッタ室３に、前記エ
ンジンＥのクランク軸５に固着したブレードカッタ４が
収容されている。またカッタハウジング１の進行方向右
側には、カッタ室３の出口から後方にのび、前記グラス
バッグＢに通じる芝放出口２が形成される。As shown in FIGS. 2 and 3, the cutter housing 1
Is formed in a hollow cylindrical shape, and a cutter chamber 3 having an open lower surface is formed in the lower portion thereof, and a blade cutter 4 fixed to a crankshaft 5 of the engine E is housed in the cutter chamber 3. On the right side of the cutter housing 1 in the traveling direction, a grass outlet 2 is formed which extends rearward from the outlet of the cutter chamber 3 and communicates with the grass bag B.
【００１０】またクランク軸５は、ベルト伝動機構６、
カッタハウジング１の後部左側に設けたミッション７お
よび減速歯車機構８を介して後車輪Ｗｒ，Ｗｒに連動さ
れている。The crankshaft 5 has a belt transmission mechanism 6,
The rear wheels Wr, Wr are interlocked with each other via a transmission 7 and a reduction gear mechanism 8 provided on the left side of the rear of the cutter housing 1.
【００１１】カッタハウジング１内には、前記ブレード
カッタ４の地上高を昇降調節するための刈高調節装置Ａ
が設けられる。以下にこの装置Ａの構造を説明するに、
カッタハウジング１の前部左右両側には、対をなす菱形
状の前輪支持部材９，９の基端が上下に揺動可能に軸支
１０，１０され、これらの支持部材９，９の上端部には
前車輪Ｗｆ，Ｗｆの車軸１１，１１が軸架される。また
一対の前記前輪支持部材９，９の前端部同士は、カッタ
ハウジング１を横切る連結軸１２を以て連結され一対の
前車輪Ｗｆ，Ｗｆは同調して軸支１０，１０部回りに上
下に揺動可能である。In the cutter housing 1, a cutting height adjusting device A for vertically adjusting the ground height of the blade cutter 4 is provided.
Is provided. To explain the structure of the device A below,
On the left and right sides of the front part of the cutter housing 1, the base ends of the pair of diamond-shaped front wheel support members 9, 9 are pivotally supported 10 so as to be vertically swingable, and the upper end parts of these support members 9, 9 are supported. Axles 11, 11 of front wheels Wf, Wf are mounted on the shaft. The front end portions of the pair of front wheel support members 9, 9 are connected to each other by a connecting shaft 12 that traverses the cutter housing 1, and the pair of front wheels Wf, Wf oscillate up and down around the shaft supports 10, 10. It is possible.
【００１２】またカッタハウジング１の後部左右両側に
は、対をなす三角形状の後輪支持部材１４，１４の基端
が上下に揺動可能に軸支１５，１５され、これら支持部
材１４，１４の上端部には後車輪Ｗｒ，Ｗｒの車軸１
６，１６が軸架される。前記軸支１５，１５点と同心軸
上において、カッタハウジング１には、前記ミッション
７から左右に延びる左右出力軸１７，１８が支持され、
これらの左右出力軸１７，１８は前記減速歯車機構８，
８を介して車軸１６，１６に連動される。一対の後輪支
持部材１４，１４の下端部同士は連結軸１９をもって連
結され、一対の後車輪Ｗｒ，Ｗｒは同調して軸支１５，
１５部回りに上下に揺動可能である。左側前輪支持部材
９の後方自由端部には前部連結ロッド２０の前端がピン
連結２１される。この前部連結ロッド２０は後方に略水
平にのびてカッタハウジング１の上壁１1 を貫通してお
り、その後端には、カッタハウジング１内で、その側壁
に枢軸２２をもって揺動自在に枢支される扇形状の高さ
調節プレート２３の基端がピン連結２４される。前部連
結ロッド２０の中間部には、圧縮コイルばねよりなるカ
ウンタばね２５が介装され、このばね２５の一端はカッ
タハウジング１に形成した着座部２６に着座され、また
その他端は前部連結ロッド２０に設けたばね座２７に着
座され、カウンタばね２５の弾発力は前部連結ロッド２
０を図２，４で左方に移動するように偏倚している。On the left and right sides of the rear portion of the cutter housing 1, the base ends of paired triangular rear wheel support members 14, 14 are pivotally supported 15 and 15 so as to be vertically swingable. On the upper end of the rear wheel Wr, Wr axle 1
6, 16 are suspended. Left and right output shafts 17, 18 extending from the mission 7 to the left and right are supported on the cutter housing 1 on the same axis as the shaft supports 15 and 15.
These left and right output shafts 17, 18 are the reduction gear mechanism 8,
It is interlocked with the axles 16, 16 via 8. The lower end portions of the pair of rear wheel support members 14, 14 are connected to each other by a connecting shaft 19, and the pair of rear wheels Wr, Wr are synchronized with each other to support the shaft 15,
It can swing up and down around 15 parts. The front end of the front connecting rod 20 is pin-connected 21 to the rear free end of the left front wheel support member 9. The front connecting rod 20 extends through the top wall 1 1 of the cutter housing 1 extends substantially horizontally to the rear, in its rear end, in the cutter housing 1, swingably pivot with a pivot 22 to the side wall The base end of the supported fan-shaped height adjustment plate 23 is pin-connected 24. A counter spring 25, which is a compression coil spring, is interposed in the middle of the front connecting rod 20, one end of the spring 25 is seated on a seat 26 formed in the cutter housing 1, and the other end is connected to the front connecting rod. The counter spring 25 is seated on a spring seat 27 provided on the rod 20, and the elastic force of the counter spring 25 is applied to the front connecting rod 2.
0 is biased to move to the left in FIGS.
【００１３】また左側後輪支持部材１４の上方自由端部
には、後部連結ロッド２８の下端がピン連結２９され
る。この後部連結ロッド２８はカッタハウジング１内を
上方に延びてその上端が、前記高さ調節プレート２３の
自由端部後側にピン連結３０されている。扇形状の高さ
調節プレート２３の、枢軸２２を中心とする円弧状外周
面には複数の係止溝３１…が周方向に間隔を存して列設
されている。The lower end of the rear connecting rod 28 is connected to the upper free end of the left rear wheel support member 14 by a pin 29. The rear connecting rod 28 extends upward in the cutter housing 1, and the upper end thereof is pin-connected 30 to the rear side of the free end of the height adjusting plate 23. A plurality of locking grooves 31 ... Are arranged in a row in the circumferential direction on the arc-shaped outer peripheral surface of the fan-shaped height adjusting plate 23 with the pivot 22 as the center.
【００１４】前記高さ調節プレート２３の上方におい
て、カッタハウジング１には、リリースレバー３３の基
端が上下に揺動可能に枢支３４され、該レバー３３の自
由端部３３1 は上方にＬ字状に屈曲されてその上端は、
カッタハウジング１の上壁１1 の通孔３５を貫通して上
方に突出され、そこに操作ノブ３６が固着される。この
操作ノブ３６は切欠部３６1 を有して平面視略Ｌ字状を
なしており、カッタハウジング１の前進方向左側の上縁
後部に形成した凹部３７に収納される。この凹部３７は
図１，２に示すように前記操作ノブ３６を囲むような平
面視三角形状に形成されており、前記切欠部３６1 と凹
部３７とにより指差込口３８（図１，２）が形成され、
作業者は自己の指をこの指差込口３８を通して前記操作
ノブ３６の裏面に入れられるようになっている。そして
図３，４の実線に示すように芝刈機が通常の走行状態に
あるとき、操作ノブ３６の上面は、カッタハウジング１
の上壁面と略面一になるようになっている。Above the height adjusting plate 23, a base end of a release lever 33 is pivotally supported 34 on the cutter housing 1 so as to be vertically swingable, and a free end portion 33 1 of the lever 33 is upwardly moved to L. It is bent like a letter and its upper end is
Protrude upward through the wall 1 1 of the through hole 35 on the cutter housing 1, which operating knob 36 is fixed to. The operation knob 36 has a notch portion 36 1 and is substantially L-shaped in a plan view, and is accommodated in a recess 37 formed at a rear portion of an upper edge on the left side of the cutter housing 1 in the forward direction. As shown in FIGS. 1 and 2, the concave portion 37 is formed in a triangular shape in plan view so as to surround the operation knob 36, and the notch portion 36 1 and the concave portion 37 form a finger insertion port 38 (see FIGS. ) Is formed,
An operator can insert his / her own finger into the back surface of the operation knob 36 through the finger insertion opening 38. When the lawnmower is in a normal traveling state, as shown by the solid lines in FIGS. 3 and 4, the upper surface of the operation knob 36 has the cutter housing 1
It is designed to be approximately flush with the upper wall of the.
【００１５】リリースレバー３３の中間部には、係合ピ
ン４０が突設されるとともに、一端を高さ調節プレート
２３に結着４２した引張ばね４１の他端が結着４３さ
れ、このばね４１の引張力は、係合ピン４０を前記複数
の係止溝３１…の一つに選択的に係合できるように作用
する。An engagement pin 40 is provided at an intermediate portion of the release lever 33, and a tension spring 41 whose one end is attached to the height adjusting plate 23 is attached to the other end 43 thereof. Is applied so that the engaging pin 40 can be selectively engaged with one of the plurality of locking grooves 31 ...
【００１６】図５に示すように高さ調節プレート２３の
円弧状外周面に形成した複数のＵ字状係止溝３１…は、
最下端のものを除いて、前記カウンタばね２５の弾発力
により、係合ピン４０が偏倚される側の側面３１1 の外
端に、内方に向かう、係合ピン４０の離脱防止用突片３
１2 が一体に形成され、図５に示すようにこの突片３１
2 は、リリースレバー３３の枢支３４点を中心として係
合ピン４０の、係止溝３１の側面３１1 と係合する側の
外周面を通る仮想円弧ａの内側に突出しており、芝刈機
が正規の状態（前，後車輪Ｗｆ，Ｗｒが地面に接地して
おり、かつ芝刈機本体の重量がそれらの車輪Ｗｆ，Ｗｒ
にかかっている状態）でリリースレバー３３を揺動操作
しないかぎり、濫りに係合ピン４０が係止溝３１から離
脱しないようになっている。As shown in FIG. 5, the plurality of U-shaped engaging grooves 31 ... Formed on the arcuate outer peripheral surface of the height adjusting plate 23,
Except for the lowermost one, the elastic force of the counter spring 25 pushes the engagement pin 40 inward toward the outer end of the side surface 31 1 on the side where the engagement pin 40 is biased. Piece 3
1 and 2 are integrally formed, and as shown in FIG.
The reference numeral 2 projects inside the virtual arc a passing through the outer peripheral surface of the engaging pin 40 on the side that engages with the side surface 31 1 of the locking groove 31 around the pivot 34 of the release lever 33. Is in a normal state (the front and rear wheels Wf and Wr are in contact with the ground, and the weight of the lawn mower body is equal to those wheels Wf and Wr).
The engaging pin 40 is prevented from being disengaged from the locking groove 31 unless the release lever 33 is swung in a state of being engaged with the engaging groove 40.
【００１７】なお最下端の係止溝３１に突片３１2 を設
けないのは、この溝３１から係合ピン４０が外れても、
係合ピン４０は調節プレート２３の突出係止部ｅに当り
止まるため前，後車輪Ｗｆ，Ｗｒが飛び出ることがない
からである。The reason why the projection 31 2 is not provided in the locking groove 31 at the lowermost end is that even if the engaging pin 40 is disengaged from this groove 31,
This is because the front and rear wheels Wf and Wr do not pop out because the engagement pin 40 stops by hitting the protruding locking portion e of the adjustment plate 23.
【００１８】次にこの実施例の作用について説明する
と、いまエンジンＥを駆動してブレードカッタ４を水平
面内において、時計方向に回転すれば、芝刈作業を行う
ことができる。刈取った芝は芝放出口２を通ってグラス
バッグＢに収集される。The operation of this embodiment will now be described. When the engine E is driven and the blade cutter 4 is rotated clockwise in the horizontal plane, the lawn mowing work can be performed. The cut grass is collected in the grass bag B through the grass outlet 2.
【００１９】次に刈取られるべき芝の高さを調節、すな
わち前，後車輪Ｗｆ，Ｗｒに対するカッタハウジング１
の高さを調節する場合について説明する。Next, the height of the grass to be mowed is adjusted, that is, the cutter housing 1 for the front and rear wheels Wf, Wr.
A case of adjusting the height of will be described.
【００２０】いま作業者は一方の手で操作ハンドルＨを
握り、他方の手の指先を操作ノブ３６の回りの指差込口
３８に差し込んで、操作ノブ３６を握り、普通の力（実
作業で人間工学上普通とされている力）を指にかけて図
４鎖線に示すように、上方に引上げると、係合ピン４０
はカウンタばね２５の弾発力に抗して複数の係止溝３１
…の一つから外れる。こゝで操作ノブ３６側のハンドル
Ｈを握った他方の手でカッタハウジング１を持ち上げる
と、カウンタばね２５の弾発力により前部連結ロッド２
０を前方に押出すとともに高さ調節プレート２３を枢軸
２２回りに時計方向に回動して後部連結ロッド２８を下
方に押し出す。これにより前輪支持部材９を軸支１０部
回りに、また後輪支持部材１４を軸支１５部回りにそれ
ぞれ揺動し、カッタハウジング１を、その自重に抗して
押上げるように作用する。ここで作業者はこの押上げ力
に逆らうように操作ノブ３６を握った姿勢で手でカッタ
ハウジング１を押下げながら、該カッタハウジング１、
すなわちブレードカッタ４の高さを調節し、その高さが
決定したら、操作ノブ３６を押下げて係合ピン４０をそ
の位置に対応する、係止溝３１に係合すれば、ブレード
カッタ４は所定の高さに保持されて芝刈高さの調節が完
了する。そして芝刈機自重とカウンタばね２５の弾発力
はつり合いの状態となる。Now, the operator grasps the operation handle H with one hand, inserts the fingertip of the other hand into the finger insertion opening 38 around the operation knob 36, grasps the operation knob 36, and then applies normal force (actual work). Ergonomically normal force) is applied to the finger and pulled up as shown by the chain line in FIG.
Is a plurality of locking grooves 31 against the elastic force of the counter spring 25.
It's out of one of ... When the cutter housing 1 is lifted with the other hand that holds the handle H on the operation knob 36 side with this, the elastic force of the counter spring 25 causes the front connecting rod 2 to move.
0 is pushed forward and the height adjusting plate 23 is rotated clockwise around the pivot 22 to push the rear connecting rod 28 downward. As a result, the front wheel support member 9 is swung around the shaft support 10 part, and the rear wheel support member 14 is swung around the shaft support 15 part, so that the cutter housing 1 is pushed up against its own weight. Here, the worker pushes down the cutter housing 1 with his / her hand while holding the operation knob 36 against the pushing force,
That is, when the height of the blade cutter 4 is adjusted and the height is determined, the operation knob 36 is pushed down to engage the engaging pin 40 with the engaging groove 31 corresponding to the position, and the blade cutter 4 is removed. The height of the lawn mowing is maintained at a predetermined height to complete the adjustment of the lawn mowing height. Then, the own weight of the lawn mower and the elastic force of the counter spring 25 are in balance.
【００２１】ところで前記操作ノブ３６はカッタハウジ
ング１の芝放出口２と反対側の上縁後部にに配設される
ので、作業者は片方の手で操作ハンドルＨを握っている
にもかかわらず他方の手により至近距離で作動し易い位
置にある操作ノブ３６の操作を楽な姿勢で容易に行うこ
とができ、高齢者や婦人でも難なく操作できる。By the way, since the operation knob 36 is disposed at the rear portion of the upper edge of the cutter housing 1 opposite to the lawn discharge port 2, the operator holds the operation handle H with one hand. The other hand can easily operate the operation knob 36 at a position where it can be easily operated at a short distance in a comfortable posture, and can be operated by an elderly person or a lady without difficulty.
【００２２】また操作ノブ３６は、芝放出口２とは反対
側にあるため、操作ノブ３６の、前述の配置によっても
刈芝の排出抵抗が増すようなことはない。Further, since the operation knob 36 is located on the opposite side of the lawn discharge port 2, the above-mentioned arrangement of the operation knob 36 does not increase the discharge resistance of the cut grass.
【００２３】係合ピン４０が係止溝３１の一つに係合す
れば、カウンタばね２５の弾発力が常に高さ調節プレー
ト２３を図３〜５において時計方向に係合するように偏
倚しているので、係合ピン４０に係止溝３１の、突片３
１2 を有する側の側面３１1 が圧接され、係合ピン４０
と係止溝３１との係合力が高められる。When the engaging pin 40 is engaged with one of the locking grooves 31, the elastic force of the counter spring 25 is biased so that the height adjusting plate 23 is always engaged in the clockwise direction in FIGS. Therefore, the engaging pin 40 has the engaging groove 31 and the protrusion 3
The side surface 31 1 on the side having 1 2 is pressure-contacted, and the engaging pin 40
The engaging force between the locking groove 31 and the locking groove 31 is increased.
【００２４】芝刈作業の終了後、芝刈機のカッタハウジ
ング１内、あるいはその足回りのメンテナンスを行うべ
く芝刈機を横倒しにすると、前記カウンタばね２５の弾
発力に逆らうように働いていた芝刈機の自重が除かれ
る。ここでもし係止溝３１に前記突片３１2 がない場合
を想定すると、リリースレバー３３の操作ノブ３６を指
で軽く引いただけで係合ピン４０が係止溝３１から簡単
に外れ、前記カウンタばね２５の弾発力で負荷のかかっ
ていない、前，後車輪Ｗｆ，Ｗｒが外方に飛び出すおそ
れがあるが、この実施例では、係止溝３１の突片３１2
が、リリースレバー３３の枢支３４部を中心として前記
係合ピン４０の、係止溝３１の側面３１1 側外周面を通
る仮想円弧ａの内側に突出していることにより、高さ調
整用車輪が浮いていても操作ノブ３６を強い力で引き上
げない限り、係合ピン４０が濫りに係止溝３１から外れ
ることがなく、前述のように芝刈機を横倒しにして前，
後車輪Ｗｆ，Ｗｒにかかる負荷を解除し、普通の力で操
作ノブ３６を引き上げようとしてもカウンタばね２５と
係止溝３１の突片３１2 とで係合ピン４０が外れるのを
阻止するばかりでなく芝刈高さを調節し直す煩わしさが
ない。After the lawn mowing work is completed, when the lawn mower is laid down sideways for maintenance of the cutter housing 1 of the lawn mower or its undercarriage, the lawn mower worked against the elastic force of the counter spring 25. The self-weight of is removed. If it is assumed that the protrusion 31 2 does not exist in the engaging groove 31, the engaging pin 40 can be easily disengaged from the engaging groove 31 by simply pulling the operating knob 36 of the release lever 33 with a finger. The front and rear wheels Wf and Wr, which are not loaded by the elastic force of the spring 25, may jump out. In this embodiment, however, the protrusion 31 2 of the locking groove 31 is ejected.
Of the engaging lever 40, which is located inside the imaginary arc a passing through the outer peripheral surface of the engaging groove 31 on the side surface 31 1 side around the pivot 34 of the release lever 33. Even if there is a float, unless the operation knob 36 is pulled up with a strong force, the engaging pin 40 will not be disengaged from the locking groove 31 inadvertently.
Even if the load applied to the rear wheels Wf and Wr is released and the operation knob 36 is pulled up with a normal force, the engagement pin 40 is prevented from coming off by the counter spring 25 and the projection 31 2 of the locking groove 31. Not the trouble of adjusting the lawn mowing height.
【００２５】なお、以上の実施例では本発明装置を四輪
式動力芝刈機に実施した場合を説明したが、これを３輪
式動力芝刈機にも実施できることは勿論である。In the above embodiments, the case where the device of the present invention is applied to a four-wheel power lawnmower has been described, but it goes without saying that this can also be applied to a three-wheel power lawnmower.
【００２６】またカッタハウジング１の上壁１1 には、
操作ノブ３６の上方を覆うようなカバーを一体に設けて
もよい。[0026] In addition to the top wall 1 1 of the cutter housing 1,
A cover that covers the upper side of the operation knob 36 may be integrally provided.
【００２７】[0027]
【発明の効果】以上のように本発明によれば、歩行式芝
刈機において、カッタハウジングの芝放出口の反対側上
縁後部に、該カッタハウジングに設けられる刈高調節装
置の操作ノブを配設し、この操作ノブに沿って前記カッ
タハウジングに指差込口を開設したので、作業者は片方
の手で操作ハンドルを握りながら、他方の手により至近
距離で作動し易い位置にある操作ノブを楽な姿勢で操作
して刈高さ調節を簡単容易に行うことができ、高齢者や
婦人でも難なく前記操作が可能になる。As described above, according to the present invention, in the walk-behind lawn mower, the operation knob of the cutting height adjusting device provided in the cutter housing is arranged at the rear of the upper edge of the cutter housing on the side opposite to the lawn discharge port. Since the finger insertion port was opened in the cutter housing along this operating knob, the operator can easily operate the operating knob at a close range with the other hand while holding the operating handle with one hand. The cutting height can be adjusted easily and easily by operating in a comfortable posture, and the operation can be performed without difficulty by the elderly and women.
【００２８】また前記操作ノブはカッタハウジングのデ
ッドスペースを有効利用して配設され、刈芝の排出抵抗
を増すこともない。Further, the operation knob is arranged by effectively utilizing the dead space of the cutter housing, and does not increase the discharge resistance of the grass clippings.
【００２９】さらに人の目につき易いカッタハウジング
の上面中央部には、操作ノブが存しないので芝刈機全体
の外観上の体裁がよくなるものである。Further, since there is no operation knob at the center of the upper surface of the cutter housing, which is easily noticeable by human eyes, the appearance of the entire lawn mower is improved.
【図１】本発明歩行式芝刈機の全体斜視図FIG. 1 is an overall perspective view of a walking lawn mower according to the present invention.
【図２】該芝刈機の要部平面図FIG. 2 is a plan view of the main part of the lawn mower.
【図３】図２の３−３線に沿う断面図FIG. 3 is a sectional view taken along line 3-3 of FIG.
【図４】刈高さ調節装置の側面図FIG. 4 is a side view of the cutting height adjusting device.
【図５】図４の一部拡大図5 is a partially enlarged view of FIG.
１ カッタハウジング ２ 芝放出口 ４ ブレードカッタ １４ 後輪支持部材 ３８ 指差込口 Ａ 刈高調節装置 Ｅ 原動機（エンジン） Ｈ 操作ハンドル Ｗｆ 前車輪 Ｗｒ 後車輪 1 Cutter Housing 2 Turf Discharge Port 4 Blade Cutter 14 Rear Wheel Support Member 38 Finger Insert A A Cutting Height Adjuster E Motor (Engine) H Operating Handle Wf Front Wheel Wr Rear Wheel
Claims (1)
れぞれ前，後車輪（Ｗｆ，Ｗｒ）を懸架するとともにそ
の中央部にブレードカッタ（４）を駆動するための原動
機（Ｅ）を搭載し、またその一側部に芝放出口（２）
を、その後部に操作ハンドル（Ｈ）を設けてなる、歩行
式芝刈機において、前記カッタハウジング（１）の、芝
放出口（２）と反対側上縁後部に、該カッタハウジング
（１）に設けられる刈高調節装置（Ａ）の操作ノブ（３
６）を配設し、この操作ノブ（３６）に沿って前記カッ
タハウジング（１）の側縁部に指差込口（３８）を開設
してなることを特徴とする歩行式芝刈機。1. A cutter housing (1) is provided with front and rear wheels (Wf, Wr) suspended at the front and rear portions thereof, and a prime mover (E) for driving a blade cutter (4) is mounted at the center thereof. , And a turf outlet on one side of it (2)
In a walk-behind lawn mower having an operation handle (H) at its rear part, the cutter housing (1) is provided at the rear of the upper edge of the cutter housing (1) on the side opposite to the grass outlet (2). Operation knob (3) of the cutting height adjusting device (A) provided
6) A walk-behind lawn mower characterized in that a finger insertion opening (38) is provided on the side edge portion of the cutter housing (1) along the operation knob (36).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3333720A JP2599658B2 (en) | 1991-12-17 | 1991-12-17 | Walking lawn mower |
| DE19924238414 DE4238414C2 (en) | 1991-12-17 | 1992-11-13 | Walk-guided lawn mower |
| FR9213849A FR2684837B1 (en) | 1991-12-17 | 1992-11-18 | LAWNMOWER WITH HEIGHT ADJUSTMENT MECHANISM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3333720A JP2599658B2 (en) | 1991-12-17 | 1991-12-17 | Walking lawn mower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05161411A true JPH05161411A (en) | 1993-06-29 |
| JP2599658B2 JP2599658B2 (en) | 1997-04-09 |
Family
ID=18269207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3333720A Expired - Lifetime JP2599658B2 (en) | 1991-12-17 | 1991-12-17 | Walking lawn mower |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2599658B2 (en) |
| DE (1) | DE4238414C2 (en) |
| FR (1) | FR2684837B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100974379B1 (en) * | 2007-08-06 | 2010-08-05 | 가부시끼 가이샤 구보다 | Walk-behind-type mower |
| JP2011206015A (en) * | 2010-03-30 | 2011-10-20 | Honda Motor Co Ltd | Walking lawn mower |
| JP2011206011A (en) * | 2010-03-30 | 2011-10-20 | Honda Motor Co Ltd | Walking lawn mower |
| CN108323312A (en) * | 2018-03-09 | 2018-07-27 | 浙江亚特电器有限公司 | A kind of grass trimmer height-regulating mechanism |
| CN109258068A (en) * | 2018-10-19 | 2019-01-25 | 苏州杰森电器有限公司 | The grass-mowing machine telescoping tube folded can be prevented when a kind of work |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5526633A (en) * | 1994-08-12 | 1996-06-18 | Black & Decker Inc. | Lawn mower having improved deck height adjustment mechanism |
| DE102004045338A1 (en) * | 2004-09-16 | 2006-03-23 | Viking Gmbh | Height adjustment on a mobile implement |
| JP5530781B2 (en) * | 2010-03-30 | 2014-06-25 | 本田技研工業株式会社 | Lawn mower |
| CN103959980B (en) * | 2014-04-15 | 2016-05-04 | 东华大学 | A kind of vibration cutting type multi-functional mower |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132855U (en) * | 1977-03-25 | 1978-10-21 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2419364C3 (en) * | 1974-04-22 | 1982-12-16 | Wolf-Geräte GmbH, 5240 Betzdorf | Cutting height adjustment device for lawn mowers |
| DE3033345A1 (en) * | 1980-09-04 | 1982-04-01 | Wolf-Geräte GmbH, 5240 Betzdorf | SICKLE LAWN MOWER WITH REAR EJECT |
| DE3168909D1 (en) * | 1980-09-04 | 1985-03-28 | Wolf Geraete Gmbh | Cutting-height adjustment device for lawn mowers |
| CA2041099C (en) * | 1990-06-01 | 1996-01-30 | Kristoffer A. Hess | Lawn mower height-adjust systems |
-
1991
- 1991-12-17 JP JP3333720A patent/JP2599658B2/en not_active Expired - Lifetime
-
1992
- 1992-11-13 DE DE19924238414 patent/DE4238414C2/en not_active Expired - Lifetime
- 1992-11-18 FR FR9213849A patent/FR2684837B1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132855U (en) * | 1977-03-25 | 1978-10-21 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100974379B1 (en) * | 2007-08-06 | 2010-08-05 | 가부시끼 가이샤 구보다 | Walk-behind-type mower |
| JP2011206015A (en) * | 2010-03-30 | 2011-10-20 | Honda Motor Co Ltd | Walking lawn mower |
| JP2011206011A (en) * | 2010-03-30 | 2011-10-20 | Honda Motor Co Ltd | Walking lawn mower |
| CN108323312A (en) * | 2018-03-09 | 2018-07-27 | 浙江亚特电器有限公司 | A kind of grass trimmer height-regulating mechanism |
| CN108323312B (en) * | 2018-03-09 | 2024-01-26 | 浙江亚特电器股份有限公司 | Mower height-adjusting mechanism |
| CN109258068A (en) * | 2018-10-19 | 2019-01-25 | 苏州杰森电器有限公司 | The grass-mowing machine telescoping tube folded can be prevented when a kind of work |
| CN109258068B (en) * | 2018-10-19 | 2023-11-21 | 苏州杰森电器有限公司 | Telescopic pipe of grass mower capable of preventing folding during working |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4238414A1 (en) | 1993-06-24 |
| FR2684837A1 (en) | 1993-06-18 |
| JP2599658B2 (en) | 1997-04-09 |
| DE4238414C2 (en) | 1995-09-07 |
| FR2684837B1 (en) | 1999-01-15 |
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