Resistance device for an exerciser

Abstract

A resistance device for an exerciser of the present invention is provided to be exclusively applied to exercisers, such as a bicycle exerciser, a pedal-type exerciser or a running exerciser for a resisting function; the resistance device adopts an oil resistance-type device of a completely different mechanical design for an innovative structural operation to overcome the shortcomings of an conventional oil resistance-type device of high cost and with complicate peripheral elements; the advantages of the present invention are that the function derived therefrom is basic with non-step resistance and the volume thereof is light and small for endurable use and easy operation; therefore, the design of the present invention enhances the quality and the function of the abovementioned exercisers to be applied by the present invention exclusively through the provision of a resistance device with a preferred cost, volume, function, endurable and useful life.

1 . A resistance device for an exerciser with an external design thereof in a unitary machine; application of the present invention to an exerciser minimizes the volume thereof and obtains the effect of saving the most cost; the structure of the present invention mainly comprises external cases of left and right machines, a driving resistance disk, a positioning ring, a adjustable resistance disk, an oblique Y-shaped clamp, a tension spring, a main shaft and a drawing steel rope; wherein: 
 the external cases of left and right machines are locked in clamping type and filled with machine oil of high viscosity and a main shaft positioned and sealed through the cooperation of a shaft bearing and a oil seal to allow the driving resistance disk, the positioning ring, the adjustable resistance disk, the oblique Y-shaped clamp and the tension spring to exist and operate therein;    the driving resistance disk has a unitary belt wheel penetrated by the main shaft; the internal and external portions of the wheel are disposed with the shaft bearings and the oil seals; it is capable of making spinning rotation and forming a corresponding structure with the adjustable resistance disk; the front plane of the disk is disposed with a plurality of concentric circular pieces staggered and inserted with resistance pieces of the adjustable resistance disk; a proper gap is reserved between the resistance pieces; the innerest rims of the resistance pieces are disposed with circular oil lead holes and the resistance pieces are disposed with inclined and convergent slot ways; the backside of the disk is disposed with diagonal slot ways for rapidly leading the machine oil into all the resistance pieces;    the adjustable resistance disk is penetrated by the main shaft and controlled by the positioning ring, the oblique Y-shaped clamp and the tension spring; it is not capable of making spinning rotation; the front aspect of the disk is stopped and positioned by the positioning ring; the rear aspect thereof is forced by the tension spring to form a corresponding structure with the driving resistance disk; the front plane of the disk is disposed with a plurality of concentric circular pieces staggered and inserted with resistance pieces of the driving resistance disk; a proper gap is reserved between the resistance pieces; the innerest rims of the resistance pieces are disposed with circular oil lead holes and the resistance pieces are disposed with inclined and convergent slot ways; the backside of the disk is disposed with diagonal slot ways for rapidly leading the machine oil into all the resistance pieces;    the oblique Y-shaped clamp is inclined and slightly resilient; the hollow section at the bottom portion thereof straddles on the main shaft with two end foot portions respectively fastened on the backside of the adjustable resistance disk; the central position on the oblique Y-shaped clamp is fastened with the drawing steel rope penetrated into the external case of the machine; the top end point of the said oblique Y-shaped clamp is fixed onto the inner rim wall of the external case of the machine to draw the adjustable resistance disk via the drawing steel rope to form a micro adjusting function of displacing forwardly and backwardly.    
     
     
         2 . A resistance device for an exerciser according to  claim 1 , wherein the oil lead slot ways disposed on the driving resistance disk and the adjustable resistance disk are not of a corresponding structure.  
     
     
         3 . A resistance device for an exerciser according to  claim 1 , wherein the adjustable resistance disk can be a member of two semi-spheres covered externally onto the outer rim side of the driving resistance disk; the inner and outer rims of the resistance pieces of two disks are correspondingly staggered and inserted to enable the driving resistance disk to make spinning rotation under the applied external force and the adjustable resistance disk to have function of expanding displacement so as to achieve the equivalent effect of forming resistance and adjusting resistance value.