Ko Fukunaga,Masaki Sakuragi,Atsushi Yamamoto,Minoru Yamamoto
申请号：
US13859911
公开号：
US09148997B2
申请日:
2013.04.10
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A work apparatus includes a drive motor, a tool head including a tool frame, a bearing, a tool shaft and a rotary tool, a frame tube with the proximal end connected to the drive motor and the distal end connected to the tool head, and a drive shaft rotatably inserted through the frame tube for transmitting the rotation of the drive motor to the rotary tool. The rotary tool is accommodated within the tool frame and is rotatable on the tool shaft, when driven by the drive shaft. The tool shaft is journaled by the bearing which is elastically supported by a flexible elastic member disposed coaxially around the bearing and interposed between the bearing and the connection of the tool frame or the frame tube. Undesirable vibrations caused by the rotation of the rotary tool will be effectively hindered from being transmitted to the frame tube.
