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    SCREWDRIVER BIT LOCKING MECHANISM
    1.
    发明授权
    SCREWDRIVER BIT LOCKING MECHANISM 有权
    螺丝刀位锁定机构

    公开(公告)号：EP1863609B1

    公开(公告)日：2018-05-16

    申请号：EP06705183.9

    申请日：2006-02-17

    申请人： Frühm, Hermann

    发明人： Frühm, Hermann

    IPC分类号： B23B31/103 ,  B25B23/00 ,  B25B23/12

    CPC分类号： B25B23/12 ,  B23B31/103 ,  B23B2260/10 ,  B25B23/0035

    摘要： Chuck (12) is formed in screwdriver shaft (10). Slot (14) in shaft (10) intersects chuck (12). Lever (16) is pivotally mounted in slot (14). Spring (24) biases the lever's tab (37) into chuck (12). Bit (28) has a collar (34) of length equalling the difference between the distance from pivot point (18) to (i) the tab's rearward face (38), and (ii) the chuck's rearward end. As bit (28) enters chuck (12), the bit's rearward end slides under lever (16), overcoming the spring's bias and pivoting the lever into a bit insert/release position. When the collar's forward face (36) moves rearwardly of rearward face (38), spring (24) pivots lever (16) into a closed position in which tab (37) protrudes into the chuck's rearward end, latching the tab's rearward face (38) against the collar's forward face (36), preventing unintended withdrawal of the bit from the chuck.

    SCREWDRIVER BIT LOCKING MECHANISM
    3.
    发明公开
    SCREWDRIVER BIT LOCKING MECHANISM 有权
    螺丝刀头锁定机制

    公开(公告)号：EP1863609A1

    公开(公告)日：2007-12-12

    申请号：EP06705183.9

    申请日：2006-02-17

    申请人： Frühm, Hermann

    发明人： Frühm, Hermann

    IPC分类号： B23B31/103 ,  B25B23/00 ,  B25B15/00 ,  B23Q3/12

    CPC分类号： B25B23/12 ,  B23B31/103 ,  B23B2260/10 ,  B25B23/0035

    摘要： Chuck (12) is formed in screwdriver shaft (10). Slot (14) in shaft (10) intersects chuck (12). Lever (16) is pivotally mounted in slot (14). Spring (24) biases the lever's tab (37) into chuck (12). Bit (28) has a collar (34) of length equalling the difference between the distance from pivot point (18) to (i) the tab's rearward face (38), and (ii) the chuck's rearward end. As bit (28) enters chuck (12), the bit's rearward end slides under lever (16), overcoming the spring's bias and pivoting the lever into a bit insert/release position. When the collar's forward face (36) moves rearwardly of rearward face (38), spring (24) pivots lever (16) into a closed position in which tab (37) protrudes into the chuck's rearward end, latching the tab's rearward face (38) against the collar's forward face (36), preventing unintended withdrawal of the bit from the chuck.