| 摘要 |
A speed change mechanism includes a housing, a guiding disc, a plurality of rolling columns, an input shaft, an output disc, and plural sleeves. The housing includes an orifice, the guiding disc includes a connecting hole, a plurality of notches, and the plurality of rolling columns equidistantly arranged and fixed in the plurality of notches. The input shaft includes a first stem, a second stem, and a cam, the output disc includes an aperture, an output shaft, and plural posts. The plural sleeves are fitted on the plural posts and between the housing and the plurality of rolling columns, and the plurality of rolling columns abut against the cam, such that when the input shaft rotates, it drives the plurality of rolling columns to rotate. |
| 主权项 |
1. A speed change mechanism comprising:
a housing including an orifice defined on a central position thereof; a guiding disc mounted in the housing and including a connecting hole formed on a central position thereof and being coaxial with the orifice of the connecting hole, the guiding disc also including a plurality of notches equidistantly arranged around a peripheral side thereof and relative to the connecting hole; a plurality of rolling columns equidistantly arranged and fixed in the plurality of notches of the guiding disc; an input shaft secured in the housing and including a first stem, a second stem, and a cam; wherein the first stern extends outwardly from a central position of a first end of the cam and inserts into the connecting hole and the orifice, and the second stem extends outwardly from a central position of a second end of the cam; an output disc disposed on the housing and including an aperture defined on a central position thereof and fitting with the second stem of the input shaft, the output disc also including an output shaft extending outwardly from a first end thereof and plural posts extending outwardly from a second end thereof, wherein the output shaft is located at the central position of the output disc, the aperture passes through the output shaft, and the plural posts are equidistantly arranged around a peripheral side of the second end of the output disc relative to the aperture; and plural sleeves fitted on the plural posts and between the housing and the plurality of rolling columns; wherein the plurality of rolling columns abut against the cam, such that when the input shaft rotates, it drives the plurality of rolling columns to rotate. |
