发明名称 DRIVER BIT STRUCTURE FOR POWER TOOL
摘要 PROBLEM TO BE SOLVED: To provide a driver bit structure for a power tool, which saves on working time and labor, and speedily and quickly carries out its operation. SOLUTION: According to the driver bit structure, a nail body working end is formed at one end of a driver bit and a tool pinching portion at the other end, respectively, and a guide portion having a tapered body is formed on a rear side of a front end of the nail body working end. A reaming cutting portion is formed on a rear side of the guide portion, and located between the nail body working end and the tool pinching portion. Further at least one cutting edge is formed in an axial direction of the reaming cutting portion, and the radial length of the cutting edge is equal to or larger than the maximum diameter of the guide portion. Thus the single driver bit has imparted thereto multiple functions of boring, reaming, and screw fastening. COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2009050969(A) 申请公布日期 2009.03.12
申请号 JP20070220541 申请日期 2007.08.28
申请人 JOKER INDUSTRIAL CO LTD 发明人 HUANG PAN-CHING
分类号 B25B21/00;B23B51/08 主分类号 B25B21/00
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