JP2005176813A - Cutting blade-mounting device of bush cutter - Google Patents
Cutting blade-mounting device of bush cutter Download PDFInfo
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- JP2005176813A JP2005176813A JP2003436674A JP2003436674A JP2005176813A JP 2005176813 A JP2005176813 A JP 2005176813A JP 2003436674 A JP2003436674 A JP 2003436674A JP 2003436674 A JP2003436674 A JP 2003436674A JP 2005176813 A JP2005176813 A JP 2005176813A
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- cutting blade
- nut
- bolt
- mounting device
- bush cutter
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Abstract
Description
本発明は、刈刃の交換が市販の工具で簡単確実に出来、刈取った草が巻きつきにくくする刈払機の刈刃取付装置に関する。 The present invention relates to a cutting blade mounting device for a brush cutter that makes it possible to easily and reliably replace a cutting blade with a commercially available tool and make it difficult for the cut grass to wind.
従来の機械に於ける刈刃の取付方法は、上部と下部のホルダーで刈刃の中心円周部を挟み、左ネジボルト又はナットにて刈刃の裏側すなわち地面側から刈刃軸に専用工具で締め付ける方法がとられている。 In conventional machines, the cutting blade is attached by holding the upper and lower holders around the center circumference of the cutting blade, and using a left-hand screw bolt or nut with the special tool on the cutting blade shaft from the back side of the cutting blade, that is, from the ground side. The method of tightening is taken.
以上に述べた従来の刈払機の方法では、地面側に締め付けるためナットが付いており、刈刃交換の初期段階では、刈払機本体を反転した不安定な姿勢で、上部ホルダー、刈刃、下部ホルダー、スプリングワッシャ、ナットのセンターを同時に合せつつ左ネジナットを締めていく必要があり、コツを必要とする。 In the conventional brush cutter method described above, a nut is attached for tightening to the ground side. At the initial stage of cutting blade replacement, the upper holder, cutting blade, It is necessary to tighten the left-hand screw nut while aligning the center of the holder, spring washer, and nut at the same time.
また、ナットが作業中に擦り減ることを防止すべく外周部がナットの高さより張り出した下部ホルダーが採用されているため、刈刃の交換には専用の深穴の工具が必要となり、一般的な市販のスパナ等が利用できず不便であリ、なれない工具なので締め付けトルクの感覚がつかみにくい。 In addition, since a lower holder with an outer peripheral part protruding from the height of the nut is used to prevent the nut from being worn away during work, a special deep hole tool is required to replace the cutting blade. It is difficult to use a commercially available spanner or the like, so it is difficult to grasp the sense of tightening torque.
さらに、作業中に下部ホルダーのナット周りのすきまに泥や小石などが挟まってしまい、刈刃の取り外しの時、先の細いドライバーなどであらかじめ取り除かなければならず面倒となる。 In addition, mud and pebbles get caught in the gap around the nut of the lower holder during work, and when removing the cutting blade, it must be removed beforehand with a thin screwdriver or the like, which is troublesome.
以上に述べた従来の刈払機の刈刃取付装置では、その難しさゆえ、使用者本人が自分で刈刃の交換が出来ずに熟練者に依頼される場合がかなりあった。 In the conventional cutting blade mounting device for a brush cutter described above, due to the difficulty, the user himself / herself cannot be replaced by the user himself / herself.
本発明は、このような従来の刈払機が有していた問題を解決しようとするものであリ、誰でも自身で市販の工具で簡単かつ確実に刈刃が交換でき安心して作業で出来る刈払機を提供することを目的とするものである。 The present invention is intended to solve the problems of such a conventional brush cutter. Anyone can easily and surely replace the cutting blade with a commercially available tool and can perform the operation with peace of mind. The purpose is to provide a payment machine.
そして、本発明は上記目的を達成するため、刈払機は安定する正常姿勢のままで、片方の手で刈刃ボルトを下からセットした下部ホルダーを持ち、その上にもう片方の手で刈刃のセンターを合わせて乗せ、そのまま中空刈刃軸に下から貫通し先端にナットを取り付けスパナ等で締め付けて上部ホルダーとの間に挟持して中空刈刃軸に固定する構造にしたものである。 In order to achieve the above object, the present invention has a lower holder in which the brush cutter is set in a stable normal posture with one hand set from the bottom, and the other hand holds the cutting blade on the other hand. The center is put together, passes through the hollow cutting blade shaft as it is from below, a nut is attached to the tip, tightened with a spanner or the like, and sandwiched between the upper holder and fixed to the hollow cutting blade shaft.
上記解決手段による作用は次のとうりである。あらかじめ下部ホルダーに刈刃のセンターを決めて、そのままの姿勢で中空刈刃軸に下から差し込めるので、途中でセンターがずれることも無い。 The effect | action by the said solution is as follows. Since the center of the cutting blade is determined in advance in the lower holder and can be inserted into the hollow cutting blade shaft from the bottom in the same posture, the center does not shift in the middle.
さらに、中空刈刃軸に刈刃ボルトとナットで締めつけをするさいに、ナットの周りの自由度が大きいので市販の工具で簡単確実に常に安定した締め付けトルクで固定出来る。万一、作業中ナットが緩んで振動した場合でも刈刃ボルトが刈刃軸に貫通されているのですぐには抜けない。 Furthermore, when tightening the hollow cutting blade shaft with a cutting blade bolt and nut, the degree of freedom around the nut is large, so that it can be fixed easily and reliably with a stable tightening torque with a commercially available tool. Even if the nut loosens and vibrates during operation, the cutting blade bolt penetrates the cutting blade shaft and cannot be removed immediately.
上述したように本発明の刈刃取付装置は、なれない人でも簡単、確実に市販の工具で刈刃の交換が出来る、利便性のや安全性の高い刈払機を提供できる。 As described above, the cutting blade mounting device of the present invention can provide a convenient and highly safe brush cutter that can be easily and surely replaced by a commercially available tool even for those who cannot.
また、刈刃と同期回転する刈刃ボルトがギアケース本体の上部に貫通した構造となっていることで、刈払った柔らかい草などがギアケースに巻きつくのを防ぐためのオプションも工夫できる。 In addition, since the cutting blade bolt that rotates synchronously with the cutting blade penetrates the upper portion of the gear case body, an option for preventing soft grass that has been cut off from being wound around the gear case can be devised.
以下、本発明を図1において説明する。 Hereinafter, the present invention will be described with reference to FIG.
図においては、1は刈刃で、2は上部ホルダー、3は下部ホルダー、4は刈刃ボルト、5は中空刈刃軸、6はギアケース、7aはナット。
刈刃1は下部ホルダー3と上部ホルダー2により挟持され、中空刈刃軸5を貫通する刈刃ボルト4とナット7aにより中空刈刃軸5に締め付けて固定される構造となる。In the figure, 1 is a cutting blade, 2 is an upper holder, 3 is a lower holder, 4 is a cutting blade bolt, 5 is a hollow cutting blade shaft, 6 is a gear case, and 7a is a nut.
The cutting blade 1 is sandwiched between the lower holder 3 and the
また、ナット7aの代わりに7bのようなノブ付ナット等のオプションなども考えられ、刈刃の取付がより容易になり、7bは刈刃1と同期回転するので、刈取られた草がギアケース6に巻きつくことを防ぐ効果も得られる。 Also, an option such as a nut with a knob such as 7b can be considered instead of the nut 7a, and the attachment of the cutting blade becomes easier, and 7b rotates synchronously with the cutting blade 1, so that the cut grass is a gear case. The effect which prevents winding to 6 is also acquired.
1 刈刃
2 上部ホルダー
3 下部ホルダー
4 刈刃ボルト
5 中空刈刃軸
6 ギアケース
7aナット
7bノブ付ナットDESCRIPTION OF SYMBOLS 1
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003436674A JP2005176813A (en) | 2003-12-17 | 2003-12-17 | Cutting blade-mounting device of bush cutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003436674A JP2005176813A (en) | 2003-12-17 | 2003-12-17 | Cutting blade-mounting device of bush cutter |
Publications (1)
Publication Number | Publication Date |
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JP2005176813A true JP2005176813A (en) | 2005-07-07 |
Family
ID=34791863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003436674A Pending JP2005176813A (en) | 2003-12-17 | 2003-12-17 | Cutting blade-mounting device of bush cutter |
Country Status (1)
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JP (1) | JP2005176813A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113661824A (en) * | 2020-05-15 | 2021-11-19 | 苏州金莱克精密机械有限公司 | Make things convenient for quick replacement function head cut and irritate machine of beating grass |
-
2003
- 2003-12-17 JP JP2003436674A patent/JP2005176813A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113661824A (en) * | 2020-05-15 | 2021-11-19 | 苏州金莱克精密机械有限公司 | Make things convenient for quick replacement function head cut and irritate machine of beating grass |
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