| 摘要 |
An elliptical exercise machine with adjustable stride length includes a frame, a driving unit, an adjustment unit, and a coupling unit. The driving unit includes two pedals, a pair of handlebars and a pair of wheels. The handlebars and the wheels are correspondingly and respectively mounted to the frame. A crank is interposed between the wheels. Two pedal shafts are pivotally and respectively mounted between each wheel and each handlebar. The adjustment unit includes a stationery member mounted to the frame, a driving member mounted to the stationery member, and a linearly movable coupling member. The coupling unit includes two first shafts pivotally connected to the coupling member, two second shafts respectively and pivotally mounted between each handlebar and each first shaft. Two bars are pivotally and respectively engaged to each second shaft and the crank. Thereby, a stride length of the two pedals can be simultaneously adjusted. |
| 主权项 |
1. An elliptical exercise machine with adjustable stride length, comprising:
a frame;
a driving unit, including two handlebars, two wheels, a crank, two pedal shafts and two pedals, and the two handlebars being pivotally coupled to the frame, and the two wheels being rotatably installed at the frame, and the crank being installed between the two wheels, and each pedal shaft having a first front pivoting portion pivotally coupled to the bottom of each handlebar, and a first rear pivoting portion coupled to the crank, and the two pedals being installed to the first rear pivoting portions of the two pedal shafts respectively;an adjustment unit, including a fixed seat mounted to the frame, a coupling member installed at the fixed seat and linearly moved between the first position and the second position and with respect to the driving member;a coupling unit, including two first shafts, two second shafts and two pull rods, and each first shaft having a first top pivoting portion and a first bottom pivoting portion pivotally coupled to the driving member, and each second shaft having a second top pivoting portion pivotally coupled to the first bottom pivoting portion, and a second bottom pivoting portion pivotally coupled to the handlebar, and each pull rod having a second front pivoting portion pivotally coupled to the second top pivoting portion, and a second rear pivoting portion coupled to the crank;such that when the driving member transmits the coupling member to move linearly, the coupling member drives the two first shafts synchronously to change the positions of the two first shafts, the two second shafts and the two pull rods to adjust the elliptical stride length of the two pedals synchronously. |
