MITSUBISHI HEAVY INDUSTRIES MEIKI ENGINES CO LTD;三菱重工メイキエンジン株式会社
发明人:
霜上 純,上野山 和之,SHIMOGAMI JUN,UENOYAMA KAZUYUKI
申请号：
JP2018239942
公开号：
JP2020099253A
申请日:
2018.12.21
申请国别(地区):
JP
年份:
2020
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide a rotational force transmission device for a brush cutter capable of suppressing abnormal noise caused by contact with other components of a coil spring at the start of rotation transmission by the coil spring. A rotating force transmitting device for a brush cutter configured to transmit a rotating force generated by a rotating force generator to a cutting blade via a coil spring, wherein one side seat of a wire rod of the coil spring is provided. Shaft member including a first side seat contact portion configured to be capable of contacting the second side seat contact portion configured to be capable of contacting the other side seat of the wire of the coil spring. Is disposed between the first shaft member and the second shaft member, and the first shaft member and the second shaft member are disposed via the both end surfaces of the wire material of the coil spring. A coil spring configured to transmit a rotational force between the shaft member and the first side seat abutting portion and the second side seat abutting portion so that the coil spring is clamped in the axial direction. And/or a compressed state holding member configured to hold the compressed state in the twisting direction. [Selection diagram]【課題】コイルばねによる回転伝達の開始時におけるコイルばねの他部品との接触により生じる異音を抑制することができる刈払機の回転力伝達装置を提供する。【解決手段】回転力発生装置が発生させた回転力をコイルばねを介して刈刃に伝達するように構成された刈払機の回転力伝達装置であって、コイルばねの線材の一方の側座に当接可能に構成された第１の側座当接部を含む第１の軸部材と、コイルばねの線材の他方の側座に当接可能に構成された第２の側座当接部を含む第２の軸部材と、第１の軸部材と第２の軸部材との間に配置されるとともに、コイルばねの線材の両先端面を介して、第１の軸部材と第２の軸部材との間で回転力を伝達するように構成されたコイルばねと、第１の側座当接部および第２の側座当接部にコイルばねを挟持させてコイルばねを軸方向に、且つあるいは捩じり方向に圧縮状態で保持するように構成された圧縮状態保持部材と、を備える。【選択図】 図３
