| 摘要 |
PROBLEM TO BE SOLVED: To provide an infant swing apparatus that can drive swing motion in a more accurate and efficient manner. SOLUTION: The infant swing apparatus includes: a first pivot shaft 206 coupled with a swing arm; a motorized drive unit configured to drive rotation of the first pivot shaft 206 in alternate directions; and a swing motion sensing unit including an encoder wheel securely mounted with a second pivot shaft 222. The second pivot shaft 222 is directly coupled with the first pivot shaft 206 in angular displacement via frictional interaction. As a result, the rotation of the first pivot shaft 206 and corresponding swing motion can be monitored in a precise manner. COPYRIGHT: (C)2011,JPO&INPIT
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