Adjustable weight-bearing mechanism

Abstract

The invention is an adjustable weight-bearing mechanism, especially the stepless adjustable weight-bearing mechanism designed for fitness exercise equipment that can be adjusted in accordance with one's weight bearing without the differentiation in weight, comprising a trough-shaped case equipped with a friction wheel, a spool, a one-way clutch, a return spring coil, a pressure plate and a pressure button. A pulling rope is coiled on the spool for the pulling of the fitness equipment with the one way clutch to control the friction wheel to rotate with the pulled pulling rope, while remains still in the reversal direction. Then the pressure plate allows it and the pressure button to adjust the friction caused by the revolving friction wheel to form the bearing weight during the pulling of the pulling rope, yet the weight can be adjusted with the pressure button to fit in with the user's exercising demand.

What is claimed is:  
     
         1 . An adjustable weight-bearing mechanism, comprising a case, a friction wheel and a spool, characterized in that: 
 said case is a trough-shaped mechanism with said friction wheel and said spool installed inside and can be set on fitness exercise equipment;    said friction wheel is a pair of stepless adjustable weight-bearing mechanism passing through a center of said case with an axle link, on an edge of said wheel is designed with a concave ring trough with a hollow screw passing through said axle link at said center, and at a corresponding location to said case is set with a pressure plate and a pressure button, on a front edge of said pressure plate is installed with a lining against said concave ring trough in accordance with width of said concave ring trough, a screw shaft stretching in front of said pressure button presses against a back of said pressure plate through case screws to adjust friction caused by said pressure plate to said friction wheel; and    said spool is a pair of revolving wheels for receiving force and for pulling, a pulling rope coils around said wheel with a ball head of said rope protruding against a locating plate of said case, the interior of said spool is divided as a middle-wheel and an internal wheel, on an edge of said internal ring of said middle wheel are set with several grooves for a return spring coil to clench, interior of said wheel can be placed with a return spring coil and a pair of one-way clutch meshed inside said internal wheel, on an edge of said internal wheel of a clutch is set with threads corresponding to threads of a hollow screw allowing said spool to combine with said friction wheel by a screwed hollow screw of an one-way clutch and drive said friction wheel to revolve in compliance with characteristics of said one-way clutch, while on the reverse causes it to idle, meanwhile, a pinned button is installed adequately on an edge of said case's surface connecting a pinion shaft inside said case meshing a pair of transposable gear wheels with said protruding locating pins fixed, said locating pins can be inserted with a fixed part of an internal ring of said return spring coil so that said button can adjust bounce of said return spring coil by rotating said locating pin, all components thus form a stepless adjustable weight-bearing mechanism through connection of each part.