| 摘要 |
Disclosed herein is a power transmission apparatus, which includes a top, a bearing holder, a driving member, a transmitting plate having at least one groove, and a rotating wheel having at least one roller. The top has a body and a spindle that penetrates the center of the body and is substantially vertical to the ground. The bearing holder locates on the ground and supports one end of the spindle. The driving member is used for rotating the top. The at least one roller is embedded in the at least one groove on the transmitting plate.
|
