Seating Mechanism and Chair

Abstract

A seating mechanism according to the present invention includes: a support provided on a holder; a seat plate provided pivotably in a substantially vertical direction around the support; and two control portions that are provided with the support therebetween, and apply, when a vertical force is applied to the seat plate, a resisting force against the vertical force to the seat plate. A chair according to the present invention includes the seating mechanism placed on a leg.

1 . A seating mechanism comprising: 
 a support provided on a holder;    a seat plate provided pivotably in a substantially vertical direction around said support; and    two control portions that are provide with said support therebetween, and    apply, when a vertical force is applied to said seat plate, a resisting force against said vertical force to said seat plate.    
   
   
       2 . The seating mechanism according to  claim 1 , wherein said two control portions includes a first control portion placed forward of said support in a seating direction, and a second control portion placed backward of said support in the seating direction.  
   
   
       3 . The seating mechanism according to  claim 2 , wherein said first control portion applies a vertically upward resisting force to said seat plate, and 
 said second control portion applies a vertically downward resisting force to said seat plate.    
   
   
       4 . The seating mechanism according to  claim 2 , wherein said first control portion is provided to previously urge said seat plate vertically upward, and 
 said second control portion is provided to previously urge said seat plate vertically downward.    
   
   
       5 . The seating mechanism according to  claim 1 , wherein said seat plate has a protruding portion provided forward of said support in the seating direction.  
   
   
       6 . The seating mechanism according to claims  1 , wherein said support is provided to extend across the width of said seat plate.  
   
   
       7 . The seating mechanism according to claims  2 , wherein a fixing portion is provided in a protruding manner on said holder closer to an edge than said second control portion in said seating direction.  
   
   
       8 . The seating mechanism according to claims  1 , wherein said two control portions are elastic bodies and/or cylinder devices.  
   
   
       9 . The seating mechanism according to any one of claims  1 , wherein said support is provided so that the position thereof in said seating direction is adjustable.  
   
   
       10 . A chair comprising: 
 a seating mechanism according to claims  1 ; and    a leg on which said seating mechanism is placed.