Training bench

Abstract

A conventional training bench has a problem in that there is a risk of a user being hurt due to a backrest seat inclining more than necessary against the user's intention. A training bench 10 of the present invention mainly has a leg frame 11 , a back frame 12 , a movable frame 13 , a seat part 14 , a back seat 15 , an angle adjustment mechanism 16 , an operation part 17 , and a restriction part 18 . The angle adjustment mechanism 16 controls and causes the back frame 12 to transition between a fixed state and an angle adjustment state appropriately, so as to prevent the back seat 15 from inclining too much against the user's intention during training. The training bench 10 thus offers excellent safety.

1 . A training bench comprising:
 a leg frame;   a back frame that is supported by the leg frame;   a movable frame that has a first end portion turnably disposed relative to the back frame and a second end portion slidably disposed relative to the leg frame;   an angle adjustment mechanism that adjusts an inclination angle of the back frame; and   an operation part that operates the angle adjustment mechanism, wherein   the angle adjustment mechanism forms a fixed state in which turning operation of the movable frame relative to the back frame is stopped so that the back frame is positionally fixed and an angle adjustment state in which turning operation of the movable frame relative to the back frame is permitted to make the inclination angle of the back frame adjustable.   
     
     
         2 . The training bench according to  claim 1 , wherein
 in conjunction with a single operation of the operation part performed for transition from the fixed state to the angle adjustment state, the angle adjustment mechanism causes the back frame to transition from the angle adjustment state back to the fixed state.   
     
     
         3 . The training bench according to  claim 2 , wherein
 the angle adjustment mechanism has
 an angle adjustment gear that is turnably disposed relative to the back frame, 
 a first arm part that is disposed at the back frame and that engages with or separates from the angle adjustment gear, and 
 a second arm part that is disposed at the back frame and that turns in conjunction with operation of the operation part to cause the first arm part to turn, 
   the first end portion of the movable frame is fixed relative to a support shaft part to which the angle adjustment gear is fixed,   in the fixed state, the first arm part is engaged with the angle adjustment gear to stop the support shaft part from performing turning operation relative to the back frame, and   in the angle adjustment state, the first arm part separates from the angle adjustment gear to permit the support shaft part to perform the turning operation relative to the back frame.   
     
     
         4 . The training bench according to  claim 3 , wherein
 the angle adjustment mechanism further has
 a protrusion piece part that is disposed at the first arm part and 
 a guide groove that is formed in the second arm part and that guides the protrusion piece part to cause the first arm part to turn, 
   the back frame transitions from the fixed state to the angle adjustment state when the protrusion piece part moves inside the guide groove, and   the back frame transitions from the angle adjustment state to the fixed state when the protrusion piece part comes out of the guide groove after moving inside the guide groove.   
     
     
         5 . The training bench according to  claim 4 , wherein
 the angle adjustment mechanism further has a movable piece part that is disposed at the second arm part and that performs extension and contraction operation when pressed by the protrusion piece part in one direction, and   when the protrusion piece part presses the movable piece part in the one direction after coming out of the guide groove to cause the movable piece part to contract, the protrusion piece part returns back into the guide groove in conjunction with the turning operation of the second arm part.   
     
     
         6 . The training bench according to  claim 1 , wherein
 a slide link part that slides relative to the leg frame is disposed at the second end portion of the movable frame, and   a restriction part is disposed at the slide link part, the restriction part extending toward the back frame to restrict an inclination range of the back frame.   
     
     
         7 . The training bench according to  claim 2 , wherein
 a slide link part that slides relative to the leg frame is disposed at the second end portion of the movable frame, and   a restriction part is disposed at the slide link part, the restriction part extending toward the back frame to restrict an inclination range of the back frame.   
     
     
         8 . The training bench according to  claim 3 , wherein
 a slide link part that slides relative to the leg frame is disposed at the second end portion of the movable frame, and   a restriction part is disposed at the slide link part, the restriction part extending toward the back frame to restrict an inclination range of the back frame.   
     
     
         9 . The training bench according to  claim 4 , wherein
 a slide link part that slides relative to the leg frame is disposed at the second end portion of the movable frame, and   a restriction part is disposed at the slide link part, the restriction part extending toward the back frame to restrict an inclination range of the back frame.   
     
     
         10 . The training bench according to  claim 5 , wherein
 a slide link part that slides relative to the leg frame is disposed at the second end portion of the movable frame, and   a restriction part is disposed at the slide link part, the restriction part extending toward the back frame to restrict an inclination range of the back frame.