To provide a screw driver with the screw holding function of high screw holding capacity with simple use, by restraining labor and cost of manufacture.
This screw driver 1A with the screw holding function can fasten a screw while holding the screw 6 by engaging with a recess 7 formed in a head part 61 of the screw 6. A plurality of engaging parts 4 for engaging with the recess 7 are formed in a tip part of the driver 1A, and a diametrically contracting slit 5 for respectively elastically deforming the tip of these respective engaging parts 4 in the diametrically contracting direction, is formed along the axial direction between the mutual respective engaging parts 4, and an interval L of an outside surface 41 of the mutual respective engaging parts 4 is formed larger than an interval L0 of an inside surface 71 of the engaging recess 7, and the respective engaging parts 4 have a pressure contact surface 42 capable of coming into pressure contact under predetermined pressure with the inside surface 71 of the recess 7 by being elastically deformed in the diametrically contracting direction when engaging with the recess 7.
| JP2000079568A | 2000-03-21 | |||
| JPS6070U | 1985-01-05 |
Motoko Kobayashi
Kiyotaka Kanamaru
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