Patent ID: 6966239
Filing Date: 2005-11-22
Classification: B25B

Abstract:
1. A driving shaft for a ratchet spanner, the ratchet spanner having a spanner body and being connected to a selected one of a wrench sleeve and a polygonal head of a screwdriver, said driving shaft being adapted to be journalled on the spanner body and comprising: a shaft body including a polygonal driving end that is adapted to be received fittingly within the wrench sleeve and that has an end surface with a polygonal screwdriver-engaging groove adapted for receiving the head of the screwdriver fittingly, an annular outer surface that is formed with a hole communicated with said screwdriver-engaging groove in said end surface, and an annular inner that defines said surface screwdriver-engaging groove therein; and a sleeve-retaining member disposed within said screwdriver-engaging groove in said end surface of said driving end of said shaft body and having an integral projection that extends through said hole in said annular outer surface of said driving end of said shaft body and that is adapted to be biased to press against the wrench sleeve so as to retain the wrench sleeve on said driving end of said shaft body, wherein said sleeve-retaining member is configured as a U-shaped reed spring that includes two parallel side plates which abut against said annular inner surface of said driving end of said shaft body, said side plates of said sleeve-retaining member being adapted to flank and abut against the head of the screwdriver, said integral projection being formed integrally with one of said side plates of said sleeve-retaining member.