JPH07194224A - Electric lawn mower - Google Patents
Electric lawn mowerInfo
- Publication number
- JPH07194224A JPH07194224A JP35088393A JP35088393A JPH07194224A JP H07194224 A JPH07194224 A JP H07194224A JP 35088393 A JP35088393 A JP 35088393A JP 35088393 A JP35088393 A JP 35088393A JP H07194224 A JPH07194224 A JP H07194224A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- movable blade
- eccentric cam
- hole
- lawn mower
- 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.)
- Pending
Links
Landscapes
- Harvester Elements (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、家庭の芝刈に適する
刃先が揺動する電気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 an electric lawn mower having a blade edge suitable for lawn mowing at home.
【0002】[0002]
【従来の技術】家庭で育成する芝を刈るためには、リー
ル刃を用いる芝刈機が一般的に使用される。そして、こ
のリール刃を用いる芝刈機は、比較的広い庭でも使用で
きるが、壁とか庭石に近い部分に刈り残しができるため
に、枠体から突出した刃先が揺動する小型の電気芝刈機
が併用されている。2. Description of the Related Art A lawnmower using a reel blade is generally used for cutting grass grown at home. A lawn mower using this reel blade can be used in a relatively large garden, but since it can be left uncut near a wall or garden stone, a small electric lawn mower with its blade tip protruding from the frame swings. It is used together.
【0003】この電気芝刈機は、枠体内に電池または交
流電源で駆動するモータと減速機と偏心カムとを設け、
枠体の底板を兼ねる固定刃に可動刃を重合支持してお
り、前記偏心カムで可動刃を揺動させることによって固
定刃との間で芝を刈るものである。In this electric lawn mower, a motor driven by a battery or an AC power source, a speed reducer and an eccentric cam are provided in a frame,
The movable blade is superposed and supported on the fixed blade which also serves as the bottom plate of the frame body, and the eccentric cam swings the movable blade to cut grass between the blade and the fixed blade.
【0004】[0004]
【発明が解決しようとする課題】固定刃と可動刃との間
で芝を刈る芝刈機は、芝生の縁刈りに使用されるが、こ
の場所の芝には風に飛ばされた細かい砂が付着している
場合が多く、芝刈り時に刃先に付着する芝の液汁にこの
細かい砂が付着したまま電気芝刈機を運転すると、切刃
は急速に磨耗し、切れ味が急速に悪くなるものである。A lawn mower, which cuts lawn between a fixed blade and a movable blade, is used for cutting the edge of lawn, and fine sand blown by the wind adheres to the lawn at this location. In many cases, when the electric lawn mower is operated with the fine sand adhering to the turf juice adhering to the blade edge during lawn mowing, the cutting edge rapidly wears and sharpness deteriorates rapidly.
【0005】従来の固定刃と可動刃の動きは、普通の鋏
と同様に切刃の間に芝を挟んで芝を可動刃で押すように
して切るものであるから、切れ味が悪くなると、強い繊
維の芝は固定刃に沿って折れ曲がるだけで切断出来なく
なり、何回もの可動刃の切断操作によって芝がちぎれる
ように切れるものである。この為、芝刈りの効率が極端
に悪くなり、ひどくなると芝刈り不能になると共に、芝
の切断部分が茶色に変色して見栄えが非常に悪いもので
あった。The movement of the fixed blade and the movable blade of the related art is to cut grass by sandwiching the grass between the cutting blades and pushing the movable blade with the movable blade, like ordinary scissors. Fiber grass can only be bent along a fixed blade and cannot be cut, and the grass is torn off as the movable blade is cut many times. For this reason, the efficiency of lawn mowing becomes extremely poor, and when it becomes severe, it becomes impossible to mow the lawn, and the cut portion of the lawn is discolored brown and the appearance is very poor.
【0006】[0006]
【課題を解決するための手段】この発明は、切刃が磨耗
しても切れ味はあまり悪くならない電気芝刈機に係るも
ので、モータ1を内装した枠体2と、枠体2に固定され
る底板を兼ねた固定刃3と、モータ1の回転軸に取付け
られる減速機4と、固定刃3に重合支持されて刃先が揺
動する可動刃5と、前記減速機4に取付けられて可動刃
5を揺動駆動する偏心カム6とを有する電気芝刈機にお
いて、可動刃5には偏心カム6と嵌合する駆動孔7を設
け、かつ、固定刃3には可動刃5を重合支持する支持ピ
ン8を設け、該支持ピン8と嵌合する可動刃5の支持孔
9は駆動孔7から刃先方向をのぞむ長孔で形成し、偏心
カム6によって揺動する可動刃5の切刃は支持孔9に沿
って前後移動しながら固定刃3の切刃と噛み合わせたも
のである。SUMMARY OF THE INVENTION The present invention relates to an electric lawn mower that does not deteriorate sharply even when a cutting edge wears, and is fixed to a frame 2 having a motor 1 incorporated therein. A fixed blade 3 also serving as a bottom plate, a speed reducer 4 attached to the rotary shaft of the motor 1, a movable blade 5 overlappingly supported by the fixed blade 3 and swinging its edge, and a movable blade attached to the speed reducer 4 In an electric lawn mower having an eccentric cam 6 for oscillatingly driving 5, a movable blade 5 is provided with a drive hole 7 for fitting with the eccentric cam 6, and a fixed blade 3 is provided with a support for overlappingly supporting the movable blade 5. The pin 8 is provided, and the support hole 9 of the movable blade 5 that fits with the support pin 8 is formed as a long hole looking in the direction of the blade tip from the drive hole 7, and the cutting edge of the movable blade 5 swinging by the eccentric cam 6 is supported. It is engaged with the cutting edge of the fixed blade 3 while moving back and forth along the hole 9.
【0007】[0007]
【作用】叙上の構成であるこの発明は、モータ1に通電
すると、モータ1は減速機4を介して偏心カム6を回転
し、かつ、偏心カム6は可動刃5の駆動孔7を介して可
動刃5の刃先を揺動する。この時、固定刃3の支持ピン
8と可動刃5の長孔で形成した支持孔9とを嵌合させた
から、偏心カム6によって可動刃5の駆動孔7が円運動
すると、可動刃5は支持ピン8を中心とする揺動を行い
ながら、支持孔9の長孔に沿った前後動を行なうもので
ある。When the motor 1 is energized, the motor 1 rotates the eccentric cam 6 through the speed reducer 4, and the eccentric cam 6 passes through the drive hole 7 of the movable blade 5 when the motor 1 is energized. And swings the tip of the movable blade 5. At this time, since the support pin 8 of the fixed blade 3 and the support hole 9 formed by the elongated hole of the movable blade 5 are fitted to each other, when the drive hole 7 of the movable blade 5 is circularly moved by the eccentric cam 6, the movable blade 5 is moved. While swinging around the support pin 8, the back-and-forth movement is performed along the elongated hole of the support hole 9.
【0008】この為、固定刃3の切刃に対して可動刃5
の切刃は挟んだ芝を押すように切断するのではなく、可
動刃5が後へまたは前へ移動しながら、切刃の間に挟ん
だ芝を切断するから、切刃が磨耗した固定刃3や可動刃
5であっても確実に芝を刈取り出来るようになった。Therefore, the movable blade 5 is different from the cutting blade of the fixed blade 3.
The cutting blade of No. does not cut by pushing the sandwiched grass, but the movable blade 5 moves backward or forward to cut the grass sandwiched between the cutting blades. Even with 3 or the movable blade 5, the lawn can now be reliably mowed.
【0009】[0009]
【実施例】実施例を示す図によりこの発明の構成を説明
すると、1はモータ、2は電気芝刈機の枠体、10はモ
ータ1を制御する運転スイッチ、11は電源コードであ
り、枠体2の把手2aの部分に設けた運転スイッチ10
を切換する操作レバー10aを押すことによってモータ
1がON−OFFし、快適に電気芝刈機を操作すること
が出来る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described with reference to the drawings showing embodiments. 1 is a motor, 2 is a frame of an electric lawn mower, 10 is an operation switch for controlling the motor 1, 11 is a power cord, and the frame is Operation switch 10 provided on the handle 2a of the second
The motor 1 is turned on and off by pushing the operating lever 10a for switching the electric lawn mower.
【0010】4はモータ1の回転軸に取付けた減速機、
12は減速機4を構成する歯車が取付けられる減速機ベ
ースであり、該減速機ベース12に前記モータ1が取付
けられ、減速機ベース12によって駆動機構が一体化で
きるシンプルな構成となっている。3は枠体2の底板を
兼ねる固定刃、5は固定刃3に重合支持する可動刃、8
は可動刃5の支持孔9に貫通する支持ピンであり、可動
刃5は支持ピン8によって固定刃3と可動自在に一体化
してある。4 is a speed reducer mounted on the rotary shaft of the motor 1,
Reference numeral 12 denotes a reduction gear base to which gears constituting the reduction gear 4 are attached. The motor 1 is attached to the reduction gear base 12, and the reduction gear base 12 has a simple structure in which a drive mechanism can be integrated. Reference numeral 3 denotes a fixed blade which also serves as a bottom plate of the frame body 2, 5 denotes a movable blade which overlaps and supports the fixed blade 3, and 8
Is a support pin penetrating the support hole 9 of the movable blade 5, and the movable blade 5 is movably integrated with the fixed blade 3 by the support pin 8.
【0011】6は減速機4の最終ギアに設けた偏心カ
ム、7は可動刃5に設けた駆動孔であり、固定刃3と一
体に支持された可動刃5の駆動孔7に偏心カム6を嵌合
し、固定刃3を枠体2にネジで取付するとき、枠体2と
固定刃3との間に前記減速機ベース12を挟着すること
によって、モータ1及び減速機4を枠体2内に取付ける
組み付け易い構成となっている。Reference numeral 6 denotes an eccentric cam provided in the final gear of the reduction gear 4, 7 denotes a drive hole provided in the movable blade 5, and the eccentric cam 6 is provided in the drive hole 7 of the movable blade 5 supported integrally with the fixed blade 3. When the fixed blade 3 is fitted to the frame body 2 with a screw, the reduction gear base 12 is sandwiched between the frame body 2 and the fixed blade 3 so that the motor 1 and the reduction gear 4 are framed. The structure is such that it can be easily mounted inside the body 2.
【0012】3aは固定刃3の先端で構成する固定刃
先、5aは可動刃5の先端で構成する可動刃先であり、
モータ1が回転すると減速機4を介して偏心カム6が回
転し、可動刃5は支持ピン8を中心に揺動するので、可
動刃先5aの切刃と固定刃先3aの切刃との間に芝を挟
んで芝刈りが出来るものである。Reference numeral 3a is a fixed blade tip formed by the tip of the fixed blade 3, and 5a is a movable blade tip formed by the tip of the movable blade 5,
When the motor 1 rotates, the eccentric cam 6 rotates via the speed reducer 4, and the movable blade 5 swings around the support pin 8. Therefore, between the cutting blade of the movable blade tip 5a and the cutting blade of the fixed blade tip 3a. You can mow the lawn with the grass in between.
【0013】この発明では、偏心カム6と嵌合する駆動
孔7の形状をカム形状と同じ丸孔とすると共に、支持ピ
ン8と嵌合する支持孔9を駆動孔7から刃先方向をのぞ
む長孔で形成したものであり、偏心カム6が回転すると
可動刃5は前後移動と左右の揺動を連続して行なってお
り、前後移動は支持孔9の長孔に沿って、また、左右の
揺動は支持ピン8が回動中心となって行なわれる。According to the present invention, the driving hole 7 fitted into the eccentric cam 6 has the same round shape as the cam shape, and the support hole 9 fitted into the support pin 8 is long from the driving hole 7 in the cutting edge direction. When the eccentric cam 6 rotates, the movable blade 5 continuously moves back and forth and oscillates left and right, so that the back and forth movement is performed along the long hole of the support hole 9 and left and right. The swing is performed with the support pin 8 as the center of rotation.
【0014】このため、図1において一点鎖線で表す可
動刃5のスタート位置から偏心カム6が90度回転する
と、実線矢印で示す可動刃5の実線位置へ可動刃先5a
の先端が移動するものであり、点線矢印で示す従来の単
なる揺動だけによる芝の切断に比べて、一方の切刃が他
方の切刃に対して滑りながら芝を切断しており、従来二
つの切刃の間に位置した芝を一度に押切りする時と比べ
て、挟んだ芝を一方の切刃に擦り付けるように切断する
から、固定刃3や可動刃5の磨耗が進んで切刃が鈍って
も、芝は確実に切断出来るようになった。Therefore, when the eccentric cam 6 rotates 90 degrees from the start position of the movable blade 5 indicated by the alternate long and short dash line in FIG. 1, the movable blade edge 5a moves to the solid line position of the movable blade 5 indicated by the solid arrow.
The tip of the blade moves, and compared with the conventional cutting of grass by simple swinging, which is indicated by the dotted arrow, one cutting edge cuts the grass while sliding against the other cutting blade. Compared with the case of pressing the grass located between two cutting blades at once, the sandwiched grass is cut so as to rub against one of the cutting blades, so that the fixed blade 3 and the movable blade 5 are worn away and the cutting blade is cut. Even if it is dull, the grass can be cut reliably.
【0015】[0015]
【効果】以上のような構成・作用を有する本発明は、固
定刃3に対し可動刃5が前後移動しながら揺動して芝を
切断するから、可動刃5を固定刃3に押し付けるように
切断する従来構造で、しばしば発生していた芝が折曲っ
て固定刃3と可動刃5との間に倒れこみ切断不能になる
というトラブルが、非常に発生し難くなった。[Effect] According to the present invention having the above-described structure and action, the movable blade 5 swings while moving back and forth with respect to the fixed blade 3 to cut grass, so that the movable blade 5 is pressed against the fixed blade 3. With the conventional structure of cutting, the problem that grass that often occurs is bent and falls between the fixed blade 3 and the movable blade 5 to make it impossible to cut is very unlikely to occur.
【0016】この為、切刃が磨耗して従来構造では切断
不能の時でも、快適に芝刈が出来るようになったもので
あり、固定刃3及び可動刃5を研磨する回数を減らすこ
とが出来る極めて実用的な発明である。Therefore, even when the cutting blade is worn and cannot be cut by the conventional structure, lawn mowing can be comfortably performed, and the number of times of polishing the fixed blade 3 and the movable blade 5 can be reduced. It is an extremely practical invention.
【図1】この発明となる固定刃と可動刃とを一体に保持
した刃先の状態を示す平面図である。FIG. 1 is a plan view showing a state of a cutting edge integrally holding a fixed blade and a movable blade according to the present invention.
【図2】この発明となる電気芝刈機の断面図である。FIG. 2 is a sectional view of an electric lawn mower according to the present invention.
1 モータ 2 枠体 3 固定刃 4 減速機 5 可動刃 6 偏心カム 7 駆動孔 8 支持ピン 9 支持孔 1 Motor 2 Frame 3 Fixed Blade 4 Reducer 5 Movable Blade 6 Eccentric Cam 7 Drive Hole 8 Support Pin 9 Support Hole
Claims (1)
固定される底板を兼ねた固定刃3と、モータ1の回転軸
に取付けられる減速機4と、固定刃3に重合支持されて
刃先が揺動する可動刃5と、前記減速機4に取付けられ
て可動刃5を揺動駆動する偏心カム6とを有する電気芝
刈機において、可動刃5には偏心カム6と嵌合する駆動
孔7を設け、かつ、固定刃3には可動刃5を重合支持す
る支持ピン8を設け、該支持ピン8と嵌合する可動刃5
の支持孔9は駆動孔7から刃先方向をのぞむ長孔で形成
し、偏心カム6によって揺動する可動刃5の切刃は支持
孔9に沿って前後移動しながら固定刃3の切刃と噛み合
うことを特徴とする電気芝刈機。1. A frame 2 containing a motor 1, a fixed blade 3 also serving as a bottom plate fixed to the frame 2, a speed reducer 4 attached to a rotary shaft of the motor 1, and a fixed blade 3 overlappingly supported. In an electric lawn mower having a movable blade 5 whose blade edge is swung, and an eccentric cam 6 which is attached to the speed reducer 4 to swing the movable blade 5, the movable blade 5 is fitted with the eccentric cam 6. Is provided with a driving hole 7, and the fixed blade 3 is provided with a support pin 8 for superposing and supporting the movable blade 5, and the movable blade 5 is fitted with the support pin 8.
The supporting hole 9 of the movable blade 5 is formed as an elongated hole looking in the direction of the cutting edge from the driving hole 7, and the cutting edge of the movable blade 5 which is swung by the eccentric cam 6 moves back and forth along the supporting hole 9 to form the cutting edge of the fixed blade 3. An electric lawn mower characterized by meshing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35088393A JPH07194224A (en) | 1993-12-28 | 1993-12-28 | Electric lawn mower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35088393A JPH07194224A (en) | 1993-12-28 | 1993-12-28 | Electric lawn mower |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07194224A true JPH07194224A (en) | 1995-08-01 |
Family
ID=18413546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP35088393A Pending JPH07194224A (en) | 1993-12-28 | 1993-12-28 | Electric lawn mower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07194224A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200460362Y1 (en) * | 2009-11-04 | 2012-05-21 | 김원태 | The brush cutter knife |
CN115918390A (en) * | 2022-12-02 | 2023-04-07 | 南京信息工程大学 | Solar photovoltaic panel anti-trailing plant equipment |
-
1993
- 1993-12-28 JP JP35088393A patent/JPH07194224A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200460362Y1 (en) * | 2009-11-04 | 2012-05-21 | 김원태 | The brush cutter knife |
CN115918390A (en) * | 2022-12-02 | 2023-04-07 | 南京信息工程大学 | Solar photovoltaic panel anti-trailing plant equipment |
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