Smith machine capable of angle adjustment and swing

Abstract

A Smith machine includes: a frame part formed to have an exercise space, and including vertical two-sided pillars, a horizontal beam for connecting upper ends of the two-sided pillars, and a support base formed in lower portions of the two-sided pillars; a swing part formed in the exercise space, hinged to the support base via a shaft member, and having a rack bar having a plurality of locking jaws such that the height of the barbell can be adjusted; a guide part which is integrally coupled to the swing part so as to swing together, and guides the rise or fall of the barbell; an angle adjustment part for adjusting the angle of the swing part; a barbell part coupled to the guide part so as to be raisable; and a load support part for supporting an inclination load of the swing part by elastic force.

1 . A Smith machine comprising:
 a frame part including two vertical pillars, a horizontal beam connecting upper ends of the two pillars, and support bases formed below the two pillars and configured to form an exercise space;   a swing part formed in the exercise space and including a guide part having both columns hinge-coupled to both of the support bases, a support connecting upper ends of both of the columns, and rack bars formed in the columns;   the guide part that is integrally coupled to the swing part to perform a swing operation together so as to guide raising or lowering of a barbell;   an angle adjustment part for adjusting an angle of the swing part; and a barbell part coupled to the guide part to be vertically movable along the guide part,   wherein the angle adjustment part includes:   a swing body driven in a manual manner or electrical manner and including an extension panel, which is fixed to an upper end of a shaft member of the swing part and vertically formed downward through a slit of the support base, and a bracket panel formed at a lower end of the extension panel; and   a load support part in which a plurality of elastic members connected to the support base and the swing part are formed symmetrically to each other on both sides thereof and which compensates for a load change value and exerts a supporting force to prevent a sudden inclination when a swing angle of the swing part changes.   
     
     
         2 . The Smith machine of  claim 1 , wherein the load support part includes:
 a first elastic member that has one end fixed to a first holder formed in the support base and the other end fixed to a second holder formed in the bracket panel; and   a second elastic member that has one end fixed to a third holder formed in the support base and the other end fixed to a fourth holder formed in the bracket panel, and   any one of the first elastic member and the second elastic member has a middle part wound and bent on a roller formed in the support base to form an “L” shape or a “⊏” shape, and the first elastic member and the second elastic member are formed to be symmetrical to each other.   
     
     
         3 . The Smith machine of  claim 1 , wherein a low sensor that detects a lowermost point of the barbell is formed,
 only when the low sensor detects the barbell, is adjustment of an angle of the swing part permitted,   the low sensor includes:   a shaft having slots formed at upper and lower portions thereof and including a first operation piece formed in a longitudinal direction by coupling the upper slot and a pin formed in the column and a second operation piece formed in the longitudinal direction by coupling the lower slot of the first operation piece and the pin formed in the column;   a detection piece that is formed on one side of the second operation piece at a right angle and is in contact with a barbell bar; and   a detection member that includes a guide shaft formed in a housing mounted on the column in the longitudinal direction, an elastic body coupled to the guide shaft, and a socket supported by the elastic body, coupled to the guide shaft to vertically operate, and coupled to the detection piece,   a fitting protrusion is formed outside the socket and coupled to the housing to prevent rotation,   the elastic body of the detection member always pushes the detection piece and the shaft upward, and   when the barbell bar is spaced apart from the detection piece, the first operation piece and the second operation piece are raised, and an upper end of the first operation piece is pressed against an outer surface of a connection piece so that a current state is a locked state.   
     
     
         4 . The Smith machine of  claim 1 , further comprising bar weight compensation units formed in both of the columns to generate a load when a barbell bar rises,
 wherein each of the bar weight compensation units includes:   an elastic body embedded and mounted inside the column in a longitudinal direction;   a first pulley formed at an inner lower end of the column so that a lower portion of the elastic body is wound therearound and a direction is switched to an upward direction;   a wire connected to an end of the elastic body facing upward; and   a second pulley formed on an upper support so that the wire is wound therearound, and   the other end of the wire is fixed to the barbell bar   
     
     
         5 . The Smith machine of  claim 1 , wherein the lower support part includes:
 a brake-type deceleration motor connected to a rotary shaft of the swing part;   a clutch unit that selectively connects or separates the brake-type deceleration motor to or from a lower end of the swing part;   an angle adjustment bracket having through-holes formed therein to correspond to a plurality of angles;   an adjustment pin which is selectively fitted in the through-holes and on which a solenoid is mounted;   an encoder that is formed inside the brake-type deceleration motor and detects a current inclination angle of the swing part;   an electric angle adjustment unit that controls an operation of the clutch unit and identifies a current angle of the swing part by driving the brake-type deceleration motor; and   an operation panel that operates a manual and a program.   
     
     
         6 . The Smith machine of  claim 5 , wherein the electric angle adjustment unit changes an angle of the swing part according to a height point of the barbell according to program control so that the barbell moves at various angles like a “C” shape or an “S” shape. 
     
     
         7 . The Smith machine of  claim 1 , wherein the angle adjustment unit further includes a stopper unit that fixes or unfixes the swing part at an inclined angle or a vertical angle so as to set a fixed state or a swingable state of the swing part. 
     
     
         8 . The Smith machine of  claim 7 , wherein the stopper unit includes:
 a first link piece including a fixed handle formed in the column, an operation handle formed in the fixed handle, and a connection piece connected to the operation handle and having one end fixed to the connection piece and a middle portion hinge-coupled to the column;   a second link piece hinge-coupled to a lower end of the first link piece and having a middle portion hinge-coupled to the column and a first fixing pin formed at a lower end thereof;   a rod having one end hinge-coupled to the first link piece and horizontally formed above the frame part; and   a third link piece hinge-coupled to the rod and having a middle portion hinge-coupled to the other column and a second fixing pin formed at a lower end thereof.   
     
     
         9 . The Smith machine of  claim 7 , wherein the stopper unit includes:
 a fixed handle formed in the column;   an operation handle formed in the fixed handle;   a connection piece connected to the operation handle;   a first link piece having one end fixed to the connection piece and a middle portion hinge-coupled to the column;   an upper link piece horizontally formed at an upper end of the first link piece;   a holder formed in the upper link piece at a right angle;   a first fixing pin connected to the holder and formed to be parallel to the upper link piece; and   an angle adjustment bracket fixedly installed above the vertical pillar of the frame part and having a plurality of angle adjustment holes formed therein so that the first fixing pin is fitted therein.   
     
     
         10 . The Smith machine of  claim 5 , wherein the adjustment pin includes a housing, a shaft pin coupled to an inside of the housing and having one end coupled to the solenoid, a coil spring coupled to the shaft pin, and a cover coupled to block the housing.