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公开(公告)号：EP0961672B1
公开(公告)日：2001-10-10
申请号：EP98903013.5
申请日：1998-02-05
发明人： AMTENBRINK, Klaus , STRAUCH, Martin
摘要： The invention relates to a precision screwdriver comprising a blade (1), a working tip (2) and a handle (3), which is essentially configured as a rotational body and embodies functional areas having different shapes and situated behind each other in the direction of the axis. Said functional areas comprise a first force application area (I) adjacent to the blade-side end, with a maximum cross-sectional area (5) positioned approximately in the middle of the force transfer area; a holding area (II) at the free end, which area can be turned around the axis (x-x); and a first drive area (III) situated between the holding area (II) and force application area (I). To improve the ergonomic properties of the handle, the invention provides for the force application area (I) to have the shape of truncated cones (6) joined at their bases. Each truncated cone has a plurality of force application areas (7) positioned next to each other in the direction of the circumference. The length of the intermediate zone is greater than or equal to the length of the force application area (I), which on the side of the blade has a second drive area (IV) immediately next to it.
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公开(公告)号：EP0961672A1
公开(公告)日：1999-12-08
申请号：EP98903013.0
申请日：1998-02-05
发明人： AMTENBRINK, Klaus , STRAUCH, Martin
IPC分类号： B25G1
摘要： The invention relates to a precision screwdriver comprising a blade (1), a working tip (2) and a handle (3), which is essentially configured as a rotational body and embodies functional areas having different shapes and situated behind each other in the direction of the axis. Said functional areas comprise a first force application area (I) adjacent to the blade-side end, with a maximum cross-sectional area (5) positioned approximately in the middle of the force transfer area; a holding area (II) at the free end, which area can be turned around the axis (x-x); and a first drive area (III) situated between the holding area (II) and force application area (I). To improve the ergonomic properties of the handle, the invention provides for the force application area (I) to have the shape of truncated cones (6) joined at their bases. Each truncated cone has a plurality of force application areas (7) positioned next to each other in the direction of the circumference. The length of the intermediate zone is greater than or equal to the length of the force application area (I), which on the side of the blade has a second drive area (IV) immediately next to it.
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