Pace-adjusting mechanism of an elliptical cross trainer

Abstract

A pace-adjusting mechanism of an elliptical cross trainer having a U-shaped coupling rod pivotally and laterally disposed on a bottom support frame. An electric adjusting mechanism is interposed between the U-shaped coupling rod and the frame unit. The electric adjusting mechanism includes a motor, a guide spindle sleeve and a telescopic spindle. When the telescopic spindle is driven to be moved, it results in the adjustment of the relative angle of the U-shaped coupling rod, and wherein an L-shaped connecting rod is pivotally coupled to each top side of the U-shaped coupling rod while the end of the L-shaped connecting rod is pivotally attached to a treadle plank so that the vertical position of the treadle planks is adjustable by changing the angle of the U-shaped coupling rod and, therefore, the adjustment of the exercise pace is achieved.

Description

BACKGROUND OF THE INVENTION [0001] 1. Fields of the Invention [0002] The invention relates to a pace-adjusting mechanism of an elliptical cross trainer, and more particularly, to a mechanism that can rapidly adjust the movement pace at will. [0003] 2. Description of the Related Art [0004] The elliptical cross trainer is so used that the operator's feet can make an elliptical movement path, thereby simulating the real running and walking path. Moreover, the horizontal pace (simulating the movement on a flat ground) and the inclined pace (simulating the uphill and downhill movement) can be changed when the vertical position of the treadles of the elliptical cross trainer changes. This is the main intention of the invention. [0005] U.S. Pat. No. 6,090,013 discloses such a mechanism that employs a plurality of selection holes in treadle planks. By selecting a desired hole in the treadle plank for connection, the coupling angle of the treadle plank can be changed to achieve the above-men...

AI Technical Summary

Benefits of technology

[0007] It is a primary object of the invention is to provide a pace-adjusting mechanism of an elliptical cross trainer that employs an electric adjusting mechanism instead of a manual adjusting mechanism. In this way, the operator can easily perform a desired adjustment during the exercise session without stopping the exercise and affecting the movement rhythm. Accordingly, the pace-adjusting mechanism of an elliptical cross trainer can be easily and practically used.

[0008] In order to achieve the above-mentioned object, an electric adjusting mechanism is employed to ensure a change of the supporting angle of a U-frame relative to a frame unit pivotally coupled thereto. Meanwhile, connecting rods are pivotally connected to treadle planks, respectively, thereby adjusting the position of the treadles and changing the movement pace.

Problems solved by technology

In fact, the manual adjustment of the aforementioned prior art is not a practical solution.

Thus, it is hardly possible to use the pace-adjusting mechanism during the exercise sessions so that this kind of the pace-adjusting mechanism is not so practical and valuable as expected.

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