Position-limiting apparatus of a pendulum mechanism of an exercise equipment

Abstract

A position-limiting apparatus of a pendulum mechanism of an exercise equipment, wherein the pendulum of the pendulum mechanism creates an expected coupled swing action responsive to the reciprocating movement done by a certain exercise equipment when subject to the action of a force, thereby providing a proper inertia movement and a gravity load action. A position-limiting apparatus is disposed at a certain position tangential to the swinging path of a pendulum of the pendulum mechanism for an effective restriction of the maximal swing of the pendulum. Moreover, a pneumatic cylinder is provided for creating a proper exercise resistance.

1 . A position-limiting apparatus of a pendulum mechanism of an exercise equipment, wherein the pendulum mechanism creates a coupled swing action responsive to reciprocating movement of the exercise equipment, thereby providing an inertia movement and a gravity load action; and wherein a position-limiting apparatus is disposed at a position to tangentially engage a swinging path of the pendulum mechanism so as to provide graduated restriction of a maximal swing of the pendulum mechanism. 
     
     
         2 . The position-limiting apparatus of a pendulum mechanism of an exercise equipment as recited in  claim 1 , wherein the position-limiting apparatus comprises a subsidiary support and several high-strength flexible metal pieces that are mounted at a side of the pendulum mechanism; and wherein the pendulum includes a compression roller at a position corresponding to a respective metal piece such that the compression roller is brought gradually in contact with the respective metal piece along the direction tangential to the movement path when the pendulum approaches the swing peak. 
     
     
         3 . The position-limiting apparatus of a pendulum mechanism of an exercise equipment as recited in  claim 1 , wherein an adjustable pneumatic cylinder having a telescopic rod is pivotally coupled between the pendulum and a base frame of the exercise equipment; and wherein the pneumatic cylinder. 
     
     
         4 . A position-limiting apparatus of a pendulum mechanism applied to a waist-twisting exerciser, the waist-twisting exerciser having a base frame, a pair of swivel pedals, and a handrail frame with a handle, wherein a pendulum mechanism is coupled at the back of the swivel pedals; wherein a position-limiting apparatus is disposed at a certain position tangential to the swinging path of a pendulum of the pendulum mechanism for an effective restriction of the maximal swing of the pendulum; wherein the position-limiting apparatus primarily consists of a subsidiary support and two high-strength flexible metal pieces that are mounted at the side of the pendulum of the pendulum mechanism; and wherein the pendulum includes a compression roller at a position corresponding to the metal pieces such that the compression roller is gradually in contact with the metal pieces along the direction tangential to the movement path when the pendulum approaches to the swing peak; at that time, the metal pieces are subject to the compression force and therefore gradually deformed, thereby creating a graduate counteracting effect with their own strength, whereby an effective restriction of the maximal swing of the pendulum is ensured. 
     
     
         5 . The position-limiting apparatus of a pendulum mechanism of an exercise equipment as recited in  claim 4 , wherein a pneumatic cylinder having a telescopic rod is pivotally coupled between the pendulum and the base frame of the exercise equipment; and wherein the pneumatic cylinder is provided with air holes for adjusting the amount of the inlet air and the outlet air, thereby creating a proper exercise resistance. 
     
     
         6 . A position-limiting apparatus of a pendulum mechanism applied to an elliptical cross trainer, the elliptical cross trainer having a base frame, a front ground-touching rod, a rear ground-touching rod, a front support with two handles, two pedal-connecting rods, and a pendulum mechanism having two pendulums and coupled with the pedal-connecting rods, wherein a position-limiting apparatus is disposed at a position tangential to a swinging path of the pendulum mechanism; wherein the position-limiting apparatus comprises a subsidiary support and four high-strength flexible metal pieces that are mounted at the side of pendulums of the pendulum mechanism; and wherein the pendulums each include two compression rollers arranged at a position corresponding to the metal pieces such that the respective compression roller is brought gradually in contact with the metal pieces along the direction tangential to the movement path when the pendulum approaches a swing peak such that the metal pieces are subject to a compression force and therefore gradually deformed, thereby creating a graduated counteracting effect. 
     
     
         7 . The position-limiting apparatus of a pendulum mechanism of an exercise equipment as recited in  claim 6 , wherein a pneumatic cylinder having a telescopic rod is pivotally coupled between the pendulum and the base frame of the exercise equipment; and wherein the pneumatic cylinder is adjustable.