发明名称 |
Handheld power tool having a shiftable mechanism |
摘要 |
A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring. |
申请公布号 |
US8978780(B2) |
申请公布日期 |
2015.03.17 |
申请号 |
US201314135878 |
申请日期 |
2013.12.20 |
申请人 |
Robert Bosch GmbH |
发明人 |
Grunwald Michael-Andreas;Pawlowski Marco;Welke Joerg;Saur Dietmar |
分类号 |
B25F5/00;B25B21/00;B23B45/00 |
主分类号 |
B25F5/00 |
代理机构 |
Kenyon & Kenyon LLP |
代理人 |
Kenyon & Kenyon LLP |
主权项 |
1. A handheld power tool, comprising:
a gear comprising at least two gear stages and a shiftable mechanism which is adjustable by a user control element between a first of the gear stages and a second of the gear stages of the hand-held power tool; and a coupling spring which acts on at least one mechanical component of the shiftable mechanism and is embodied as a metastable coupling spring which in a first operating position assumes a stable position and in a second operating position assumes a quasi-stable position, wherein in the quasi-stable position the coupling spring exerts a lesser spring force than in an intermediate position between the two operating positions. |
地址 |
Stuttgart DE |