JP2013078267A - Lawn mower - Google Patents
Lawn mower Download PDFInfo
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- JP2013078267A JP2013078267A JP2011218712A JP2011218712A JP2013078267A JP 2013078267 A JP2013078267 A JP 2013078267A JP 2011218712 A JP2011218712 A JP 2011218712A JP 2011218712 A JP2011218712 A JP 2011218712A JP 2013078267 A JP2013078267 A JP 2013078267A
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- rotary blade
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Abstract
Description
本発明は、リール式の回転刃と固定刃により芝の刈込みを行う芝刈機に関する。 The present invention relates to a lawn mower that cuts grass with a reel-type rotary blade and a fixed blade.
従来のリール式芝刈機は、本体の斜め後方上部に前後方向に対して回転自在に枢支したハンドルを有し、ハンドルを保持して前方に押すようにして本体を地面に沿って走行させ、本体内部に備えたモータやエンジン等の駆動源に連動して回転する回転刃と本体に調整可能に取付けられた固定刃の摺り合せによって芝が刈込まれ、該芝は本体後部の排出口から集草バッグに送られる構造となっている。 Conventional reel-type lawn mowers have a handle pivotally supported in the front and rear of the main body at an obliquely rear upper part, hold the handle and push it forward to run the main body along the ground, The turf is trimmed by the sliding of a rotating blade that rotates in conjunction with a drive source such as a motor or engine provided inside the main unit and a fixed blade that is adjustably attached to the main unit. It is structured to be sent to the grass bag.
また、回転刃は回動可能に軸受で両端支持されており、該軸受の支持部と回転刃の端部との間には接触しないように隙間を設けている。 The rotating blade is rotatably supported at both ends by a bearing, and a gap is provided between the supporting portion of the bearing and the end portion of the rotating blade.
長い芝の刈込み作業は、刈込まれた芝が芝刈機の本体に負荷を掛けずにスムーズに集草され、更に仕上がりがきれいに行えるように、初めに刈込み高さ調整を高い位置にセットして刈込み、順次短く刈込むことを推奨している。 Long turf trimming is done by first setting the trim height adjustment to a high position so that the trimmed turf can be collected smoothly without placing a load on the main body of the lawn mower, and the finish can be made more beautiful. It is recommended to cut down in order.
しかしながら、上記のように構成された芝刈機は、刈込み作業を行なう際に刈込み高さを調整しながら何回かに分けて刈込み作業を行なわなければならないため、作業時間が掛かっていた。 However, the lawn mower configured as described above takes a long working time because the mowing work must be performed several times while adjusting the cutting height when the mowing work is performed.
そのため、実際には作業時間短縮のために、長い芝の刈込み作業でも一度に短く刈込む場合が多く、このようにして刈込まれた芝は長くてかさばるので集草バッグまで排出されずに回転刃付近に堆積し易かった。 Therefore, in practice, in order to shorten the work time, even when mowing long turf, there are many cases where mowing is done short at once, and the turf cut in this way is long and bulky. It was easy to deposit in the vicinity.
このような状態で刈込み作業を続けると、刈込まれた長い芝は回転刃の回転軸に巻付いて芝刈機の本体に負荷を掛け、刈込み作業効率の低下を生じさせる。
また、回転刃の軸受部の支持部と回転刃の端部との間や回転刃の刃物部の間から、回転刃の中心部の回転軸に巻付いた芝を取除く作業は刃物部が邪魔になり困難であった。
If the pruning operation is continued in such a state, the pruned long turf wraps around the rotary shaft of the rotary blade and places a load on the main body of the lawn mower, causing a reduction in the pruning work efficiency.
Also, the blade part is used to remove the turf wrapped around the rotary shaft at the center of the rotary blade from between the support part of the bearing part of the rotary blade and the end part of the rotary blade or between the blade part of the rotary blade. It was difficult to get in the way.
本発明の目的は、芝刈込み作業時、長い芝を刈込んだ場合でも回転刃の回転軸に芝が直接巻付くのを抑制すると共に、芝が巻付いた場合でも芝刈機の本体に負荷を掛けることが少なく、しかも簡単に芝を取除くことが出来る芝刈機を提供することである。 The purpose of the present invention is to suppress the lawn from being directly wound around the rotary shaft of the rotary blade even when the lawn is trimmed, even when the lawn is trimmed, and even when the lawn is wound, the load on the lawn mower body It is to provide a lawn mower that can be removed easily and can be removed easily.
上記目的を達成するため、本発明は、芝刈機の回転刃を回動可能に両端支持している軸受の支持部と回転刃の刃物部を保持するプレートとの間にスペーサを設けて隙間を無くし、スペーサの取付部の内径は回転刃の回転軸径より大きくすることで達成される。 In order to achieve the above object, according to the present invention, a spacer is provided between the support portion of the bearing that rotatably supports the rotary blade of the lawn mower and the plate that holds the blade portion of the rotary blade, thereby providing a gap. This is achieved by making the inner diameter of the spacer mounting portion larger than the rotation shaft diameter of the rotary blade.
本発明によれば、刈込まれた芝草が回転刃の回転軸に直接巻付くことがなく、回転軸より径の大きなスペーサに巻付くことにより、作業者が芝草を容易に取除くことができる。
また、スペーサを回転刃の回動に連動しないように取付けることで、回転刃と独立したスペーサに巻付くので、回転刃への影響が少なくなり、芝刈機の本体への負荷も軽減出来るようになる。更に、スペーサは回転刃に関係なく回動可能なため、回転刃を動かさなくてもスペーサに巻付いた芝を簡単に取除くことが出来るようになる。
According to the present invention, the trimmed turf grass is not directly wound around the rotary shaft of the rotary blade, but the operator can easily remove the turf grass by winding it around the spacer having a diameter larger than that of the rotary shaft.
In addition, by attaching the spacer so that it does not interlock with the rotation of the rotary blade, it winds around the spacer independent of the rotary blade, so the influence on the rotary blade is reduced and the load on the lawn mower body can be reduced Become. Furthermore, since the spacer can be rotated regardless of the rotary blade, the turf wrapped around the spacer can be easily removed without moving the rotary blade.
本発明の芝刈機の一実施形態を図１から図４に従って説明する。 An embodiment of a lawn mower according to the present invention will be described with reference to FIGS.
図1は本発明の実施例のリール式芝刈機の本体の部分断面側面図、図２は図１のハンドル部拡大図、図３は回転刃の取付け状態図、図４はスペーサの斜視図である。
リール式芝刈機１は、駆動源としてのモータ７と、モータ７を収容する本体２の斜め後方上方に前後方向に対して回転自在に枢支したハンドル３と、本体２に回転可能に支持される図示しない車軸の両端に取り付けられた車輪２３とを備える。本体２の内部には、モータ７と、モータ７からベルト９及びプーリー１０を介して接続された回転刃１１と、回転刃１１の外周に近接して設けられた固定刃１２がそれぞれ配設されている。
芝刈機１は、ハンドル３の図２に示すセフティロックスイッチ４を操作しながらメインスイッチ５を入れることにより、電源コード６により電力が本体２に内蔵のモータ７に供給され、モータ７軸の回転が該モータ７軸に直結されたプーリー(ａ)８とベルト９によって連結されたプーリー(ｂ)１０に直結された回転刃１１が追従して回転する。これにより、芝刈機１の固定刃１２と回転刃１１の外周とが摺り合わされ、芝刈作業を行うことができる。尚、固定刃１２は回転刃１１との間隔が調整可能に構成されている。
1 is a partial sectional side view of a main body of a reel type lawn mower according to an embodiment of the present invention, FIG. 2 is an enlarged view of a handle portion of FIG. 1, FIG. 3 is a mounting state diagram of a rotary blade, and FIG. is there.
The reel-type lawn mower 1 is supported rotatably on the main body 2, a motor 7 as a drive source, a handle 3 pivotally supported in the front-rear direction and obliquely rearward and upward of the main body 2 housing the motor 7. And wheels 23 attached to both ends of an axle (not shown). Inside the main body 2, a motor 7, a rotary blade 11 connected from the motor 7 via a belt 9 and a pulley 10, and a fixed blade 12 provided close to the outer periphery of the rotary blade 11 are arranged. ing.
The lawn mower 1 turns on the main switch 5 while operating the safety lock switch 4 shown in FIG. 2 of the handle 3 so that power is supplied to the motor 7 built in the main body 2 by the power cord 6, and the rotation of the motor 7 axis The rotary blade 11 directly connected to the pulley (a) 8 directly connected to the shaft of the motor 7 and the pulley (b) 10 connected by the belt 9 rotates following the rotation. Thereby, the fixed blade 12 of the lawn mower 1 and the outer periphery of the rotary blade 11 are rubbed together, and the lawn mowing work can be performed. The fixed blade 12 is configured such that the distance from the rotary blade 11 can be adjusted.
また、回転刃１１は回転軸１３に３枚の刃物部１４がプレート１５，１６，１７を介して各々保持されて形成しており、回転軸１３の両側に圧入された軸受(ａ)１８，(ｂ)１９を支持部(ａ)２０，(ｂ)２１によって回動可能に両端支持され、互いに接触しない様に該刃物部１４の両端部と支持部(ａ)２０，(ｂ)２１との間には各々ａ，ｂの隙間があるように構成している。
本発明では、図３に示すように、回転刃１１の両端のプレート１５，１７と支持部(ａ)２０，(ｂ)２１との間にスペーサ２２が取付けられている。スペーサ２２は、図４に示すように中空の内径部２２ａと、外径部２２ｂとを備えた円筒状に形成されている。スペーサ２２の内径部２２ａには回転刃１２の回転軸１３の端部が挿通されている。ここで、内径部２２ａは回転軸１３の外径よりも大きく構成されているため、遊びを持った状態で嵌め込まれ、回転軸１３に対して自由に相対回転可能なよう構成されている。尚、外径部は回転刃１１の刈込み径や刃物部１４の内径よりも小さく形成されており、一部が刃物部１４の内側において刃物部１４と軸方向にオーバーラップするよう設けられている。
上記のように構成された芝刈機１での刈込み作業は、刈った長い芝が刃物部１４の両端部と支持部(ａ)２０，(ｂ)２１との隙間ａ，ｂから入り込んだ際にはスペーサ２２に巻付くようになる。
以上、本発明を実施例に基づいて説明したが、本発明は上述の実施例に限定されるものではなく、その趣旨を逸脱しない範囲内で種々の変更が可能である。例えば、スペーサ２２の外側の形状は円筒状としたがこれに限らず、多角形状とすることで、芝の巻付き防止が向上する。
Further, the rotary blade 11 is formed by holding three blade portions 14 on the rotary shaft 13 via plates 15, 16, 17, respectively, and bearings (a) 18, press-fitted on both sides of the rotary shaft 13, (b) 19 is supported at both ends by the support portions (a) 20 and (b) 21 so as to be rotatable, and both end portions of the blade portion 14 and the support portions (a) 20 and (b) 21 There is a gap between a and b.
In the present invention, as shown in FIG. 3, spacers 22 are attached between the plates 15 and 17 at both ends of the rotary blade 11 and the support portions (a) 20 and (b) 21. As shown in FIG. 4, the spacer 22 is formed in a cylindrical shape having a hollow inner diameter portion 22a and an outer diameter portion 22b. The end portion of the rotary shaft 13 of the rotary blade 12 is inserted into the inner diameter portion 22 a of the spacer 22. Here, since the inner diameter portion 22 a is configured to be larger than the outer diameter of the rotating shaft 13, the inner diameter portion 22 a is fitted with play and is configured to be freely rotatable relative to the rotating shaft 13. The outer diameter portion is formed smaller than the trimming diameter of the rotary blade 11 and the inner diameter of the blade portion 14, and a part of the outer diameter portion is provided so as to overlap the blade portion 14 in the axial direction inside the blade portion 14. .
The mowing work with the lawn mower 1 configured as described above is performed when the long cut grass enters through the gaps a and b between the both ends of the blade 14 and the support portions (a) 20 and (b) 21. Wraps around the spacer 22.
As mentioned above, although this invention was demonstrated based on the Example, this invention is not limited to the above-mentioned Example, A various change is possible within the range which does not deviate from the meaning. For example, the outer shape of the spacer 22 is a cylindrical shape, but the shape is not limited to this.
１…芝刈機、２…本体、３…ハンドル、４…セフティロックスイッチ、５…メインスイッチ、６…電源コード、７…モータ、８…プーリー(ａ)、９…ベルト、１０…プーリー(ｂ)、１１…回転刃、１２…固定刃、１３…回転軸、１４…刃物部、１５…プレート、１６… プレート、１７…プレート、１８…軸受(ａ)、１９…軸受(ｂ)、２０…支持部(ａ) 、２１…支持部(ｂ) 、２２…スペーサ、ａ…距離、ｂ…距離である。
DESCRIPTION OF SYMBOLS 1 ... Lawn mower, 2 ... Main body, 3 ... Handle, 4 ... Safety lock switch, 5 ... Main switch, 6 ... Power cord, 7 ... Motor, 8 ... Pulley (a), 9 ... Belt, 10 ... Pulley (b) , 11 ... Rotary blade, 12 ... Fixed blade, 13 ... Rotating shaft, 14 ... Blade part, 15 ... Plate, 16 ... Plate, 17 ... Plate, 18 ... Bearing (a), 19 ... Bearing (b), 20 ... Support Part (a), 21 ... support part (b), 22 ... spacer, a ... distance, b ... distance.
Claims (3)
前記駆動源を保持する本体と、
前記本体の後方に伸びたハンドルと、
前記駆動源により回転するリール式の回転刃と、
前記本体に取り付けられる固定刃を備えた芝刈機であって、
前記回転刃を回動可能に両端支持している軸受の支持部と前記回転刃の刃物部を保持するプレートとの間にスペーサを設けたことを特徴する芝刈機。 A driving source;
A main body for holding the drive source;
A handle extending rearward of the body;
A reel-type rotary blade rotated by the drive source;
A lawn mower provided with a fixed blade attached to the main body,
A lawn mower characterized in that a spacer is provided between a support portion of a bearing that rotatably supports the rotary blade at both ends and a plate that holds the blade portion of the rotary blade.
3. The lawn mower according to claim 1, wherein the spacer is a lightweight member such as a resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011218712A JP2013078267A (en) | 2011-09-30 | 2011-09-30 | Lawn mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011218712A JP2013078267A (en) | 2011-09-30 | 2011-09-30 | Lawn mower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2013078267A true JP2013078267A (en) | 2013-05-02 |
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ID=48525251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011218712A Pending JP2013078267A (en) | 2011-09-30 | 2011-09-30 | Lawn mower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2013078267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337887A (en) * | 2019-07-02 | 2019-10-18 | 深圳市俊达通办公智能科技有限公司 | A kind of convenient and fast mobile smoothly grass trimmer of push rod dismounting |
-
2011
- 2011-09-30 JP JP2011218712A patent/JP2013078267A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337887A (en) * | 2019-07-02 | 2019-10-18 | 深圳市俊达通办公智能科技有限公司 | A kind of convenient and fast mobile smoothly grass trimmer of push rod dismounting |
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