| 摘要 |
A portable power wrench is controlled by an operation control unit and comprises a housing (10;50) with a rotation motor, a gear casing (15;55) including a gearing (18;56, 57) and a drive spindle (19;60) and being releasably and/or rotatably connected to the housing via a swivel or multi-position connection, an operation parameter sensing device (22, 23;68) is associated with the drive spindle (19, 60). The sensing device (22, 23;68) communicates with the operation control unit via a first signal transferring device (28;82) which is disposed between the drive spindle (19;60) and the gear casing (15; 55), and a second signal transferring device (31; 84) is disposed between the gear casing (15;55) and the housing (10;50), wherein the second signal transferring device (31; 84) communicates with the operation control unit. At least the first signal transferring device (28;82) between the drive spindle (19;60) and the gear casing (15;55) comprises a contact free transfer device. |
