| 摘要 |
An elliptical trainer has a base, and two crank assemblies, a handle assembly and a linkage assembly mounted on the base. Each crank assembly has two cranks and a transmission wheel. A transmission strip is mounted around the transmission wheels of the crank assemblies to simulate rotations of the crank assemblies. The linkage assembly connects the cranks of the crank assemblies to the handle assembly. When the elliptical trainer is operated, the linkage assembly drives the cranks to alternately rotate upwardly and downwardly. The cranks that rotate downwardly drag the other cranks to rotate upwardly. Therefore, the crank assemblies and the linkage assembly operate smoothly, and consequently, the user is capable of smoothly performing walking or running movements.
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