BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a step exerciser and, more particularly, to a step exerciser which can be rotated freely to provide multiple sports functions for a user.
2. Description of Related Art
A conventional step exerciser is an exercise machine popular with users who can tread on pedals thereof to imitate walking and thereby achieve an exercise effect.
However, the conventional step exerciser can only provide the user with one walking method such that it is not enough to meet the user's requirement of interesting and varied exercises.
Therefore, the invention provides a step exerciser to mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
The main objective of the present invention is to provide a step exerciser which can be rotated freely to meet the user's requirement of various exercises.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a step exerciser in accordance with the present invention;
FIG. 2 is an exploded perspective view of a pedal element of the step exerciser in accordance with the present invention;
FIG. 3 is a side view of the step exerciser in accordance with the present invention;
FIG. 4 is a perspective view of the step exerciser in accordance with the present invention in usage;
FIG. 5 is a side view of the step exerciser in accordance with the present invention in usage;
FIG. 6 is a top view view of the pedal element of the step exerciser in accordance with the present invention being rotated relative to a base; and
FIG. 7 is an exploded perspective view of a pedal and a post of the step exerciser in accordance with the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to FIGS. 1–3, a step exerciser comprises a base (10), a handle bar (11) provided upright on a first end of the base (10), and a pedal element (20) provided on a second end of the base (10). The pedal element (20) is composed of a first female hollow shank (21) pivotally mounted on the base (10), and two pedals (28), respectively, provided on two sides of the first female hollow shank (21). An interconnection element, which can enable the pedals (28) to interlock each other, is provided between the pedals (28) and the first female hollow shank (21). The interconnection element has two pairs of transverse levers (22), two second female hollow shanks (23), two wheels (24) and two cables (25). Each pair of the transverse levers (22) is pivotally mounted between two lateral sides of the first female hollow shank (21) and the associated second female hollow shank (23), and are parallel to each other. The second female hollow shanks (23), which are parallel to each other, respectively interlock and are parallel to the first female hollow shank (21) due to the transverse levers (22) being connected with the first and the second female hollow shanks (21, 23). The pedals (28) are mounted on a top end of each second female hollow shank (23). The parallel wheels (24) are, respectively, mounted on a top end of the first female hollow shank (21) via an axle (242) thereof being pivotally and transversely mounted on the first female hollow shank (21). The cables (25) are reeled, respectively, around the wheels (24), and each has two ends, respectively, connected to the transverse levers (22).
A damping element (30), which is provided on the pedal element (20), has two pneumatic cylinders (32), each of which is pivotally mounted on the transverse levers (22). Each pneumatic cylinder (32) includes a barrel (322) and a rod (324). The rods (324), each of which can move relative to the barrel (322), is pivotally connected to the axle (242), so that the barrels (322) slide corresponding to the rods (324) to generate an effect of damping when the pedal element (20) is working.
With reference to FIGS. 4–5, when a user tramps on the pedals (28), one of the pedals (28) moves downwards so that the pair of the transverse levers (22) corresponding to the lower pedal (28) pivotally rotates downwards relative to the first female hollow shank (21). Meanwhile, the cable (25) is under tension due to the lower pair of the transverse levers (22) and therefore, the other pair of the transverse levers (22) moves upwards relative to the first female hollow shank (21). Hence, the other pedal (28) corresponding to the high pair of the transverse levers (22) moves upwards so that the pedals (28) can move up and down in turn to imitate walking. Furthermore, the damping element (30) provides the user with a damping effect to enhance exercise difficulty.
With reference to FIGS. 3 and 5, two lugs (222) are, respectively, mounted on the top transverse levers (22). When the user is exercising, each of the lugs (222) can, respectively, attach to the second female hollow shank (23) in one side to limit the moving extent of the pedals (28) and enable the user to use the present invention conveniently.
Furthermore, with the reference to FIG. 6, the first female hollow shank (21) is pivotally mounted on the base (10) so that the pedal element (20) can turn right or left relative to the base (10) due to the movement of the user such as twisting the waist to achieve different effects of exercise.
With reference to FIGS. 1–2, a post (12) is securely provided on and perpendicular to the base (10). The first female hollow shank (21) is pivotally mounted around the post (12) and has two bearing elements (40) mounted on two opposed ends thereof. The two bearing elements (40), respectively, have a first cap (42) which is threaded and a second cap (422). A first ball race (44) attaches to the first cap (42) which is threadingly engaged with a threaded top end of the post (12), and a second ball race (442) attaches to the second cap (422) and is mounted adjacent to the base (10). The second cap (422) is securely mounted on a lower end of the fiat female hollow shank (21). Hence, the first female hollow shank (21) can rotate relative to the post (12) in a low friction manner due to the first and the second ball races (44, 442).
With reference to FIG. 7, two columns (282), each of which is securely provided below the pedal (28), are, respectively, inserted into and rotationally mounted in the second female hollow shanks (23) due to fasteners such as C-like fasteners (284). With reference to FIGS. 6 and 7, when the pedal element (20) rotates relative to the base (10), the pedals (28) also can rotate relative to the second female hollow shanks (23) and therefore, feet of the user can keep forward relative to his or her body. Hence, ankles and knees of the user can rotate with the rotation of the pedal element (20) to enhance the exercise effect. Furthermore, the user can twist at the waist and the ankles and knees without stamping up and down.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Patent Grant
7137928
