公开(公告)号：US20090148246A1

公开(公告)日：2009-06-11

申请号：US12329390

申请日：2008-12-05

申请人： Tomomasa NISHIKAWA ,  Kenji KOBORI ,  Shingo YAMAZAKI

发明人： Tomomasa NISHIKAWA ,  Kenji KOBORI ,  Shingo YAMAZAKI

IPC分类号： B23B27/00

CPC分类号： B23Q11/006 ,  Y10T408/453 ,  Y10T408/50

摘要： According to the invention, a drilling tool includes: a driving source; a transmission drive unit for transmitting a rotation force of the driving source; and a dust collector for collecting dust produced from a workpiece drilled by the end tool and blowing air against the workpiece, wherein a filtering means for filtering the air mixed with the collected dust and a centrifugal fan for taking in the filtered air and sending out the filtered air in a circumferential direction are provided, the centrifugal fan is disposed in a housing formed with an airflow sending port for sending a part of the air taken in to the dust collector and a discharge port for discharging a rest of the air to an outside, and a distance from the airflow sending port to the discharge port in a forward direction in a direction of rotation of the centrifugal fan is longer than the distance from the airflow sending port to the discharge port.

摘要翻译： 根据本发明，钻具包括：驱动源; 用于传递所述驱动源的旋转力的传动驱动单元; 以及集尘器，用于收集由末端工具钻出的工件产生的灰尘并将空气吹向工件，其中过滤装置用于过滤与收集的灰尘混合的空气和离心风扇，用于吸入经过滤的空气并发出 设置有沿圆周方向的过滤空气，离心式风扇设置在形成有用于将吸入到集尘器中的一部分空气送出的送风口的外壳和用于将其余空气排出到外部的排出口 并且在离心式风扇的旋转方向上从气流送出口向排出口向前方的距离比从气流送出口到排出口的距离长。