Windup spring drive unit
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United States of America Patent
Stats
-
Jun 8, 2004
Grant Date -
Jan 1, 2004
app pub date -
May 16, 2003
filing date -
May 21, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A windup spring drive unit improving the operability of winding when incorporated in an apparatus such as a toy, and increasing a degree of freedom in design. The windup spring drive unit comprises: a spring 2 as a power source; a windup shaft 3 which manually winds up the spring 2; an output shaft 4; and a gear train 5 which transmits the power of the spring 2 to the output shaft 4, these members being accommodated in a casing 6. A crown gear 8 is included in the gear train 5, the crown gear 8 has its center of rotation axis being arranged in parallel with the windup shaft 3. The output shaft 4 and the windup shaft 3 are arranged to be orthogonal to each other, and the windup shaft 3 is provided to pierce in a thin direction t of the casing 6.
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