One-way transmission device

A one-way transmission device comprising:

• a housing having a cylindrical inner wall formed therein;
• a first coil spring coaxially receiving in said housing and resiliently pressed at its outer periphery against said cylindrical inner wall, said first coil spring having first and second ends which are bent radially inwardly;
• a second coil spring coaxially received in said housing beside said first coil spring, said second coil spring being pressed at its outer periphery against said cylindrical inner wall, said second coil spring having first and second ends which are bent radially inwardly;
• an annular core coaxially and rotatably received in the coaxially arranged first and second coil springs and having at a peripheral portion thereof a sectoral recess into which said first and second ends of said first and second coil springs are received, said sectoral recess being defined by circularly spaced first and second walls;
• input and output shafts respectively connected to axially opposed sides of said annular core to rotate therewith;
• an output member including a base portion having a bore through which said output shaft passes and a pawl projecting into said sectoral recess, said pawl having a slit with which said first end of said first coil spring is engaged;
• and
• said first end of said second coil spring is arranged between said first wall of said sectoral recess and said pawl, and in which said second ends of said first and second coil springs are each arranged between said second wall of said sectoral recess and said pawl.