发明名称 |
DRILLING DEVICE |
摘要 |
<p>A drilling device drilling to a desired depth without a gauge. The drilling device includes a distance sensor positioned on an imaginary line spanning between a front end of the housing and a hand gripped portion. The distance sensor is away form a front end of a gear housing by a distance Ls. The distance sensor provides an effective measurement range. The relationship of L1≰Ls and Ls+Lb≰L2 is satisfied where L1 represents a distance between the distance sensor and a point closest to the distance sensor and defining a lower limit of the effective measurement range, L2 represents a distance between the distance sensor and a point farthest from the distance sensor and defining an upper limit of the effective measurement range, and Lb represents a distance between the front end of the housing and a tip end of the end bit.</p> |
申请公布号 |
EP2558249(A1) |
申请公布日期 |
2013.02.20 |
申请号 |
EP20110716666 |
申请日期 |
2011.04.12 |
申请人 |
HITACHI KOKI CO., LTD. |
发明人 |
OKUBO, TAKAHIRO;ABE, SATOSHI;IWATA, KAZUTAKA |
分类号 |
B25D16/00;B23B49/00;B25F5/00 |
主分类号 |
B25D16/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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