JP2534764Y2 - Brush cutter - Google Patents
Brush cutterInfo
- Publication number
- JP2534764Y2 JP2534764Y2 JP1991056807U JP5680791U JP2534764Y2 JP 2534764 Y2 JP2534764 Y2 JP 2534764Y2 JP 1991056807 U JP1991056807 U JP 1991056807U JP 5680791 U JP5680791 U JP 5680791U JP 2534764 Y2 JP2534764 Y2 JP 2534764Y2
- Authority
- JP
- Japan
- Prior art keywords
- guard member
- brush cutter
- sheath tube
- brush
- guard
- 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 - Lifetime
Links
Landscapes
- Harvester Elements (AREA)
Description
【考案の詳細な説明】[Detailed description of the invention]
【０００１】[0001]
【考案が属する技術分野】この考案は、刈払機に関する
ものであり、一層詳細には、機器本体後部に配置したエ
ンジンの駆動力を鞘管を介して本体前部の刈払手段に伝
達するとともにハンドルを把持して刈り払い作業を行う
ようにした手持ち型式の刈払機の改良に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bush cutter, and more particularly, to transmitting a driving force of an engine arranged at a rear portion of a machine body to a bush cutter at a front portion of the machine body via a sheath tube. The present invention relates to an improvement of a hand-held type brush cutter that performs a brush cutting operation by gripping a handle.
【０００２】[0002]
【従来の技術】従来より、機器本体後部に配置したエン
ジンの駆動力を鞘管を介して本体前部に配設したスチー
ルブレードやナイロンコードなどの刈払手段に伝達し、
ハンドルを把持して刈払手段を高速で回動させるたこと
により、雑草などの刈り払い作業を行う手持ち型式の刈
払機は、所要の作業を簡便に行えることから広範に使用
されている。2. Description of the Related Art Conventionally, a driving force of an engine disposed at a rear portion of an apparatus main body is transmitted to a brushing means such as a steel blade or a nylon cord disposed at a front portion of the main body through a sheath tube.
Hand-held brush cutters that perform cutting work on weeds or the like by gripping a handle and rotating the cutting brush at a high speed are widely used because required work can be easily performed.
【０００３】[0003]
【考案が解決しようとする課題】ところで、この種の刈
払機におけるスチールブレードやナイロンコードなどの
刈払手段は、作業中に刈り払い区域の立木を傷つけたり
表皮を剥いでしまったりするだけでなく、壁や小石に当
たったりするとスチールブレードの場合は刃の一部が欠
け飛んで作業者に危険が生じたり、またナイロンコード
の場合は切れ味が落ちるだけでなく小石等を飛散させて
しまうなど安全面において問題があった。そこで、例え
ば、刈払手段を覆うようにガード部材を配設する等の工
夫がなされているが、このようなガード部材は回動する
刈払手段が草木を刈払う状態を充分目視することができ
ないため作業性が低下するなど新たに解決すべき課題が
あることが指摘されていた。[Problems to be Solved by the Invention] By the way, cutting means such as steel blades and nylon cords in this kind of cutting machine not only damage the standing trees in the cutting area or peel the skin during the work. When hitting a wall or pebbles, a steel blade may cause a danger to workers due to chipping of a part of the blade, and in the case of nylon cord not only sharpness but also pebbles may be scattered. There was a problem in terms. Therefore, for example, a device such as arranging a guard member so as to cover the mowing means has been devised. However, such a guard member can sufficiently visually observe a state in which the rotating mowing means mows plants and trees. It was pointed out that there was a new problem to be solved, such as reduced workability due to the inability to do so.
【０００４】[0004]
【課題を解決するための手段】このような事情から、本
考案では機器本体後部に配置したエンジンの駆動力を鞘
管を介して本体前部の刈払手段に伝達するとともにハン
ドルを把持して刈り払い作業を行う手持ち刈払機におい
て、刈払手段の外周に該刈払手段の回転径よりも若干大
きく設定した円形枠部材からなるガード部材を配設し
て、該ガード部材の両端を鞘管の端部に回動自在に枢着
し、さらに、前記ガード部材の両端枢着部に該ガード部
材を前記刈払手段の外周の水平位置と前記鞘管の上方回
動位置とに係止固定できる係止面を持った偏心カムを固
着して、該偏心カムの前記係止面を前記鞘管の端部上方
に設けた板ばねにより押圧保持し、刈払手段に対して前
記ガード部材をはね上げ自在に構成することにより、作
業の安全性と作業能率の向上を図ろうとするものであ
る。In view of such circumstances, in the present invention, the driving force of the engine disposed at the rear of the apparatus main body is transmitted to the mowing means at the front of the main body via the sheath tube, and the handle is gripped. In a hand-held brush cutter that performs a brush cutting operation, a guard member composed of a circular frame member set to be slightly larger than a rotation diameter of the brush cutter is disposed on an outer periphery of the brush cutter, and both ends of the guard member are sheathed. The guard member is rotatably pivotally attached to an end of the guard member, and further, the guard member is locked and fixed to both ends pivotally attached to the guard member at a horizontal position on the outer periphery of the mowing means and an upper rotational position of the sheath tube. An eccentric cam having a locking surface capable of being fixed is fixed, and the locking surface of the eccentric cam is pressed and held by a plate spring provided above an end of the sheath tube, and the guard member is moved against the brushing means. The safety of the work and the workability It is an attempt is made to improve.
【０００５】[0005]
【考案の実施の態様】この考案に係る刈払機では、刈払
手段の上方に配設した円形枠部材からなるガード部材が
高速回転する刈払手段の半径方向のスペーサとして機能
するので刈り払い作業を目視しながら安全に行なうこと
ができ、また、保護が不要な場合は、この円形枠型ガー
ド部材を跳ね上げて作業を行なえるので、能率の向上を
図ることができるものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the bush cutter according to the present invention, a guard member comprising a circular frame member disposed above the bush cutter functions as a radial spacer of the bush cutter rotating at a high speed. When the protection is not required, the work can be performed by flipping up the circular frame type guard member, so that the efficiency can be improved.
【０００６】次に本考案に係る刈払機の好適な実施例に
つき、添付図面を参照しながら以下詳細に説明する。Next, a preferred embodiment of the brush cutter according to the present invention will be described in detail with reference to the accompanying drawings.
【０００７】図１および図２において、本考案に係る刈
払機は、機器本体１０後端に設けたエンジン１２の回転
駆動力を、鞘管１４の内部を介してスチールブレードか
らなる刈払刃１６（刈払手段）に伝達し、ハンドル１８
を把持して雑草などの刈り払い作業を行う構成となって
いる。1 and 2, a brush cutter according to the present invention uses a brush cutter 16 made of a steel blade through the inside of a sheath tube 14 to control the rotational driving force of an engine 12 provided at the rear end of a machine body 10. (Cutting means) and handle 18
, And a mowing operation for weeds and the like is performed.
【０００８】また、鞘管１４の先端部には、前記刈払刃
１６の直径よりも若干大きい径に設定された円形枠部材
２０からなるガード部材２２が前記刈払刃１６の外周に
配置されるようにして、該ガード部材２２の両端枢着部
２０ａを鞘管１４の先端部の取付部材２４に回動自在に
枢着することにより、該ガード部材２２が刈払刃１６の
上方に水平に取付けられるとともに、該ガード部材２２
が刈払刃１６の上方の水平位置から前記鞘管１４の方向
へはね上げ自在なるように構成されている。At the tip of the sheath tube 14, a guard member 22 composed of a circular frame member 20 having a diameter slightly larger than the diameter of the brush cutter 16 is arranged on the outer periphery of the cutter blade 16. In this way, the guard member 22 is pivotally attached to the mounting member 24 at the distal end of the sheath tube 14 so that the guard member 22 is horizontally positioned above the brush cutter 16. And the guard member 22
Is configured to be able to be flipped up from the horizontal position above the brush cutter 16 toward the sheath tube 14.
【０００９】なお、前記円形枠部材２０の直径方向に
は、この枠部材２０の変形防止と補強を兼ねた差し渡し
部材２６を配置するのが好ましい。In addition, it is preferable to dispose a bridging member 26 which also serves to prevent deformation and reinforce the frame member 20 in the diameter direction of the circular frame member 20.
【００１０】また、ガード部材２２をはね上げ自在に構
成する手段としては、図３に示すように、取付部材２４
に対する円形枠部材２０の両端枢着部２０ａに取付けら
れた偏心カム２８と、この偏心カム２８を押さえる板ば
ね３０とが用いられる。この偏心カム２８は、ガード部
材２２を、図２に実線で示した刈払刃１６の上方の水平
位置に固定するための係止面２８ａと、ガード部材２２
を、図２に鎖線で示した鞘管１４の上方の回動位置に固
定するための係止面２８ｂとを有していて、これらの係
止面２８ａ、２８ｂのいずれか一方が、前記取付部材２
４の上面に固着した板ばね３０により弾力的に押圧保持
されるようになっており、該ガード部材２２を、必要に
応じてその両端枢着部２０ａを支点として回動すること
により、前記刈払刃１６の上方水平位置と、鞘管１４の
上方回動位置でロックできるように構成されている。As means for arranging the guard member 22 so that it can be flipped up, as shown in FIG.
An eccentric cam 28 attached to both ends pivotal portions 20a of the circular frame member 20 and a leaf spring 30 for holding the eccentric cam 28 are used. The eccentric cam 28 includes a locking surface 28a for fixing the guard member 22 at a horizontal position above the brush blade 16 shown by a solid line in FIG.
And a locking surface 28b for fixing the mounting surface 28b at a rotational position above the sheath tube 14 shown by a chain line in FIG. 2, and one of the locking surfaces 28a and 28b Member 2
4 is resiliently pressed and held by a leaf spring 30 fixed to the upper surface of the guard 4, and the guard member 22 is pivoted about its both ends pivoting portions 20a as necessary as a fulcrum, if necessary, to thereby cut the mowing. It is configured to be able to lock at the upper horizontal position of the wiping blade 16 and the upper rotation position of the sheath tube 14.
【００１１】なお、添付図面において、参照符号３２は
刈払い作業時などに刈払刃１６の回転制御を行なうため
にハンドル１８の所定個所に配置したエンジン１２のス
ロットル操作レバーであり、また、参照符号３４は刈払
刃１６の側部ガード部材である。In the accompanying drawings, reference numeral 32 denotes a throttle operation lever of the engine 12 which is disposed at a predetermined position on the handle 18 for controlling the rotation of the brush cutter blade 16 during a brush cutter operation or the like. Reference numeral 34 denotes a side guard member of the brush cutter 16.
【００１２】このように構成した本考案に係る刈払機を
使用するに際しては、好ましくはエンジン１２の始動前
あるいは壁際や立木近傍の作業を行なう前に、手指など
によってガード部材２２をその両端部２０ａを支点とし
て回動操作することにより刈払刃１６の上方に位置さ
せ、ハンドル１８の把持してスロットルレバー３２の操
作によって刈払刃１６を回転させて雑草などの刈払作業
を行なうのであるが、刈払刃１６の上方に位置ししかも
その直径よりも若干大きい径に設定したガード部材２２
が半径方向に対するスペーサとして機能するので、刈払
刃１６が刈り払い区域の立木を損傷したり、壁や小石に
当たることによって生じる不都合を回避できるものであ
る。When the brush cutter according to the present invention is used, preferably, the guard member 22 is moved to the both ends 20a by fingers or the like before starting the engine 12 or working near a wall or near a tree. The cutting operation is performed by rotating the cutting blade 16 by operating the throttle lever 32 by gripping the handle 18 and rotating the cutting blade 16 by rotating the cutting blade 16 as a fulcrum. A guard member 22 located above the brush cutter blade 16 and having a diameter slightly larger than the diameter thereof.
Functions as a spacer in the radial direction, thereby avoiding the inconvenience caused by the mowing blade 16 damaging the trees in the mowing area and hitting walls and pebbles.
【００１３】なお、立木近傍や壁際の作業が終了した
り、広い刈り払い区域などにおいては、図１および図２
の破線で示すように、ガード部材２２を適宜はね上げ、
通常の刈払機と同様に作業を行なえば、作業能率の向上
を図ることができる。1 and 2 when the work near the standing trees or near the wall is completed, or in a large mowing area.
As shown by the broken line, the guard member 22 is appropriately raised,
If the work is performed in the same manner as a normal brush cutter, the work efficiency can be improved.
【００１４】図１乃至図３に示した実施例は、刈払刃１
６の外周に配置するガード部材２２を、該刈払刃１６の
上方に取付けた場合を示しているが、ガード部材２２は
刈払刃１６の外周に配置されていれば、図４に示す実施
例のように、刈払刃１６の下方に水平に保持できるよう
にしてもよい。この場合にも、取付部材２４に対する円
形枠部材２０の両端枢着部は、前記の偏心カム２８及び
板ばね３０と同様な錠止機構（図示せず）により、刈払
刃１６の下方水平位置と、鞘管１４の上方回動位置でロ
ックできるように構成されるが、この実施例のように、
ガード部材２２を刈払刃１６の下方に水平に保持した場
合には、ガード部材２２を刈り払い作業時における橇部
材として使用することができ、作業能率をさらに向上す
ることができる。The embodiment shown in FIG. 1 to FIG.
6 shows a case where the guard member 22 arranged on the outer periphery of the brush cutter blade 6 is mounted above the brush cutter blade 16. However, if the guard member 22 is arranged on the outer periphery of the brush cutter blade 16, the embodiment shown in FIG. As in the example, it may be configured to be able to be held horizontally below the brush cutter blade 16. Also in this case, the pivoting portions of both ends of the circular frame member 20 with respect to the mounting member 24 are positioned below the brush cutter 16 by a locking mechanism (not shown) similar to the eccentric cam 28 and the leaf spring 30. And can be locked at the upper rotation position of the sheath tube 14, but as in this embodiment,
When the guard member 22 is horizontally held below the brush cutter blade 16, the guard member 22 can be used as a sled member at the time of the brush cutting operation, and the working efficiency can be further improved.
【００１５】[0015]
【考案の効果】先に述べたように、本考案に係る刈払機
によれば、刈払手段の上方に配設したガード部材が、立
木や壁との間のスペーサとして機能するので刈り払い作
業時における非刈り払い物の損傷の阻止とともに刈払手
段の損傷や小石などの飛び跳ねも確実に防止できるので
安全性の向上を図ることができるだけでなく、広い刈り
払い区域などにおいては、所望に応じてガード部材を跳
ね上げれば良いので作業能率の向上も図ることができる
等種々の利点を有しその実用的効果は極めて大きい。As described above, according to the bush cutter according to the present invention, the guard member disposed above the bush cutter functions as a spacer between a tree and a wall, so that the bush cutting operation can be performed. In addition to preventing damage to the non-cutting material at the time, damage to the cutting means and jumping of pebbles can be reliably prevented, so that not only can safety be improved, but also in a large cutting area, etc. Since the guard member only has to be flipped up, the working efficiency can be improved, and there are various advantages, and the practical effect is extremely large.
【００１６】以上、本考案に係る刈払機の好適な実施例
としてスチールブレードを刈払手段として使用した刈払
機を例示して説明したが、本考案はこの実施例に限定さ
れるものではなく、刈払手段としてナイロンコードを使
用するときはそのナイロンコードがガードの外側まで延
びることのないようにガードの適所に適宜の切断機構を
配設する等、本考案の精神を逸脱しない範囲内において
種々の改変をなし得ることは勿論である。As described above, the preferred embodiment of the brush cutter according to the present invention has been described by exemplifying a brush cutter using a steel blade as a brush cutter. However, the present invention is not limited to this embodiment. When a nylon cord is used as a brush cutter, various cutting mechanisms may be provided without departing from the spirit of the present invention. For example, an appropriate cutting mechanism may be provided at an appropriate position on the guard so that the nylon cord does not extend outside the guard. Can of course be modified.
【図１】本考案に係る刈払機の好適な実施例を示す概略
斜視図である。FIG. 1 is a schematic perspective view showing a preferred embodiment of a brush cutter according to the present invention.
【図２】図１に示す刈払機の概略側面図である。FIG. 2 is a schematic side view of the brush cutter shown in FIG.
【図３】図１に示す刈払機におけるガード部材の取付状
態を示す断面説明図である。FIG. 3 is an explanatory cross-sectional view showing a mounting state of a guard member in the bush cutter shown in FIG. 1;
【図４】本考案に係る刈払機の別の実施例を示す要部側
面図である。FIG. 4 is a main part side view showing another embodiment of the brush cutter according to the present invention.
１０ 機器本体、 １２ エンジン、 １
４ 鞘管、 １６ 刈払刃（刈払手段）、１８ ハンドル、 ２
０ 円形枠部材、 ２２ ガード部材 ２４ 取付部材、 ２
６ 差し渡し部材、 ２８ 偏心カム、 ３０ 板ばね、 ３
４ 側部ガード、 ３２ スロットルレバー、10 equipment body, 12 engine, 1
4 sheath tube, 16 mowing blades (mowing means), 18 handles, 2
0 circular frame member, 22 guard member 24 mounting member, 2
6 cross member, 28 eccentric cam, 30 leaf spring, 3
4 side guards, 32 throttle levers,
Claims (1)
力を鞘管を介して本体前部の刈払手段に伝達するととも
にハンドルを把持して刈り払い作業を行う手持ち刈払機
において、刈払手段の外周に該刈払手段の回転径よりも
若干大きく設定した円形枠部材からなるガード部材を配
設して、該ガード部材の両端を鞘管の端部に回動自在に
枢着し、さらに、前記ガード部材の両端枢着部に該ガー
ド部材を前記刈払手段の外周の水平位置と前記鞘管の上
方回動位置とに係止固定できる係止面を持った偏心カム
を固着して、該偏心カムの前記係止面を前記鞘管の端部
上方に設けた板ばねにより押圧保持することにより、刈
払手段に対して前記ガード部材をはね上げ自在に構成し
たことを特徴とする刈払機。1. A hand-held brush cutter for transmitting a driving force of an engine disposed at a rear portion of a device main body to a bush cutting device at a front portion of the main body via a sheath tube and holding a handle to perform a brush cutting operation. than the rotation diameter of該刈payment means on the outer periphery of disposed a guard member made of a slightly larger the circular frame member, the ends of the guard member pivotally attached rotatably to the end portion of the sheath tube, further , the guard across pivot point of said guard member
The cutting member on the horizontal position of the outer circumference of
An eccentric cam having a locking surface that can be locked and fixed to the one-side rotation position, and the locking surface of the eccentric cam is fixed to an end of the sheath tube.
A brush cutter, wherein the guard member is configured to be able to be flipped up with respect to the brush cutter by being pressed and held by a leaf spring provided above .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991056807U JP2534764Y2 (en) | 1991-06-26 | 1991-06-26 | Brush cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991056807U JP2534764Y2 (en) | 1991-06-26 | 1991-06-26 | Brush cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH052622U JPH052622U (en) | 1993-01-19 |
| JP2534764Y2 true JP2534764Y2 (en) | 1997-05-07 |
Family
ID=13037667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991056807U Expired - Lifetime JP2534764Y2 (en) | 1991-06-26 | 1991-06-26 | Brush cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2534764Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE524198C2 (en) * | 2002-11-19 | 2004-07-06 | Electrolux Ab | Motor-driven work tools eg. bar hedge shears with a locking mechanism for the angle adjustment between a cutting unit and a bar |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50157179A (en) * | 1974-06-15 | 1975-12-18 | ||
| JPS5311723A (en) * | 1976-07-16 | 1978-02-02 | Yamada Kikai Kogyo Kk | Power bush cleaner with safety coverrgathering implement combination |
-
1991
- 1991-06-26 JP JP1991056807U patent/JP2534764Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH052622U (en) | 1993-01-19 |
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