| 摘要 |
PCT No. PCT/CH90/00239 Sec. 371 Date Jun. 13, 1991 Sec. 102(e) Date Jun. 13, 1991 PCT Filed Oct. 10, 1990 PCT Pub. No. WO91/05900 PCT Pub. Date May 2, 1991.An assembly for detachably mounting a tool such as a drill, a punch or a needle for a sewing machine on a driving member. The assembly includes a tool carrier, a mounting head for connecting the tool carrier to the driving member having at least one seat surface being cooperatively engaged with a corresponding portion of the tool carrier, a device for holding the tool carrier in contact with the seat, and positioning element to place the mounting head in a specific position relative to the tool carrier when the tool carrier is held by the holding device. The positioning element includes at least one stop member preventing displacement of the tool carrier on the seat, abutment members disposed in a specific direction for preventing displacement of the tool carrier on the seat in any path transverse to the direction, and at least one thrust member acting on the tool carrier in the direction for holding the tool carrier in permanent contact with the stop member in the specific position with respect to said mounting head. |
