Exercise apparatus

Abstract

An exercise apparatus according to an embodiment of the present disclosure includes a support, a cushion disposed on the support, containing fluid therein, and having a deformable shape, a rotating member arranged at one side of the support, and an actuator connecting the cushion to the rotating member and operating the rotating member in line with deformation of the cushion.

1 . An exercise apparatus comprising:
 a support;   a cushion disposed on the support, containing fluid therein, and having a deformable shape;   a rotating member arranged at one side of the support; and   an actuator connecting the cushion to the rotating member and operating the rotating member in line with deformation of the cushion.   
     
     
         2 . The exercise apparatus of  claim 1 , wherein the cushion contracts and moves the fluid therein toward the actuator when pressure applied from outside increases, and the cushion expands and the fluid is introduced from the actuator into the cushion when the pressure applied from the outside decreases, and
 the actuator rotates the rotating member according to movement of the fluid.   
     
     
         3 . The exercise apparatus of  claim 1 , wherein the actuator comprises:
 a flow channel having one end connected to the cushion and through which the fluid moves;   a valve connected to another end of the flow channel; and   an operating member connected to the valve and operating according to pressure of the valve to rotate the rotating member.   
     
     
         4 . The exercise apparatus of  claim 3 , wherein, when the pressure of the valve increases while one end of the operating member is coupled to the valve, the operating member rotates and comes into contact with a protrusion connected to one end of the rotating member, thereby rotating the rotating member in one direction, and
 the operating member rotates in an opposite direction when the pressure of the valve decreases.   
     
     
         5 . The exercise apparatus of  claim 1 , wherein one or more seating grooves, in which an outer inclined surface is higher than an inner inclined surface, are formed on an upper surface of the support. 
     
     
         6 . The exercise apparatus of  claim 1 , wherein two cushions are arranged separately from each other on top of the support,
 two rotating members are arranged on one side and another side of the support so as to be connected to the two cushions, respectively, and   two actuators are arranged to respectively operate the rotating members independently.   
     
     
         7 . The exercise apparatus of  claim 1 , wherein the rotating member rotates with one end connected to the support and has a ball at another end. 
     
     
         8 . The exercise apparatus of  claim 1 , further comprising a pressure regulator connected to the cushion and controlling internal pressure of the cushion by controlling an amount of fluid contained inside the cushion. 
     
     
         9 . An exercise apparatus which allows a user to perform knee-extension exercises while lying down, the exercise apparatus comprising:
 a support supporting both knees of the user,   a pair of cushions arranged separately from each other on top of the support to correspond to both knees of the user and deformed according to pressure applied by the user's knees,   a pair of rotating members arranged on both sides of the support and connected to the pair of cushions, and   a pair of actuators respectively connected to the pair of cushions to independently operate the pair of rotating members in line with deformation of the pair of cushions when the pair of cushions are deformed by the pressure applied by the user's knees.