Chair

Abstract

A load-supporting body includes a base plate constituting a framework; a cushion material arranged on a front surface side of the base plate; an upholstery material stretched to cover an outside surface of the cushion material and an outer peripheral edge of the base plate; and a tightening cord inserted through a peripheral edge of the upholstery material and tightened to allow end parts to be tied together on a rear surface side of the base plate in a state in which the upholstery material has covered the outside surface of the cushion material and the outer peripheral edge of the base plate. The base plate is provided with a first side wall and a first protruding wall that restricts displacement of the tightening cord in a base-plate center direction, and a second side wall and a second protruding wall that restrict displacement of the tightening cord in a base plate outward direction. This provides a chair that can appropriately restrict the displacement of the tightening cord and a peripheral edge of the upholstery material and can reduce positional deviation of the upholstery material.

1 . A chair, comprising a load-supporting body, the load-supporting body including:
 a base plate constituting a framework;   a cushion material arranged on a front surface side of the base plate;   an upholstery material stretched to cover at least an outside surface of the cushion material and an outer peripheral edge of the base plate; and   a tightening cord inserted through a peripheral edge of the upholstery material and tightened to allow end parts to be tied together on a rear surface side of the base plate in a state in which the upholstery material has covered the outside surface of the cushion material and the outer peripheral edge of the base plate,   wherein the base plate is provided with first locking means for restricting displacement of the tightened tightening cord in a base-plate center direction, and second locking means for restricting displacement of the tightened tightening cord in a base plate outward direction.   
     
     
         2 . The chair according to  claim 1 ,
 wherein the base plate is formed in a substantially rectangular shape having corner parts at four corners and linear parts between the corner parts,   wherein the corner parts are provided with the first locking means, and   wherein at least some of the linear parts are provided with the second locking means.   
     
     
         3 . The chair according to  claim 1 ,
 wherein the first locking means includes a first side wall protruding from a rear surface of the base plate to a rear side, and a first protruding wall protruding in an outward direction of the base plate from the vicinity of a protruding end of the first side wall, and   wherein the second locking means includes a second side wall protruding from the rear surface of the base plate to the rear side, and a second protruding wall protruding in an inward direction of the base plate from the vicinity of a protruding end of the second side wall.   
     
     
         4 . The chair according to  claim 3 ,
 wherein a recessed groove that is continuous in a circumferential direction of the base plate is formed in the rear surface of the base plate, the first side wall is an inside wall of the recessed groove, and the second side wall is an outside wall of the recessed groove.   
     
     
         5 . The chair according to  claim 3 ,
 wherein the first protruding wall and the second protruding wall are arranged so as to be separated from each other in a direction in which the tightening cord extends, and to be adjacent to each other.   
     
     
         6 . The chair according to  claim 5 ,
 wherein respective tip parts of the first protruding wall and the second protruding wall that are provided adjacent to each other extend to positions with substantially half lengths of the separation width of the first side wall and the second side wall in a direction intersecting the direction in which the tightening cord extends.   
     
     
         7 . The chair according to  claim 3 ,
 wherein tip parts of the first protruding wall and the second protruding wall are arranged at positions that face each other.   
     
     
         8 . The chair according to  claim 3 ,
 wherein portions of tip parts of the first protruding wall and the second protruding wall are arranged to face each other, and remaining portions thereof are arranged so as to be separated from each other in a direction in which the tightening cord extends.   
     
     
         9 . The chair according to  claim 2 ,
 wherein the first locking means includes a first side wall protruding from a rear surface of the base plate to a rear side, and a first protruding wall protruding in an outward direction of the base plate from the vicinity of a protruding end of the first side wall, and   wherein the second locking means includes a second side wall protruding from the rear surface of the base plate to the rear side, and a second protruding wall protruding in an inward direction of the base plate from the vicinity of a protruding end of the second side wall.   
     
     
         10 . The chair according to  claim 9 ,
 wherein a recessed groove that is continuous in a circumferential direction of the base plate is formed in the rear surface of the base plate, the first side wall is an inside wall of the recessed groove, and the second side wall is an outside wall of the recessed groove.   
     
     
         11 . The chair according to  claim 9 ,
 wherein the first protruding wall and the second protruding wall are arranged so as to be separated from each other in a direction in which the tightening cord extends, and to be adjacent to each other.   
     
     
         12 . The chair according to  claim 11 ,
 wherein respective tip parts of the first protruding wall and the second protruding wall that are provided adjacent to each other extend to positions with substantially half lengths of the separation width of the first side wall and the second side wall in a direction intersecting the direction in which the tightening cord extends.   
     
     
         13 . The chair according to  claim 9 ,
 wherein tip parts of the first protruding wall and the second protruding wall are arranged at positions that face each other.   
     
     
         14 . The chair according to  claim 9 ,
 wherein portions of tip parts of the first protruding wall and the second protruding wall are arranged to face each other, and remaining portions thereof are arranged so as to be separated from each other in a direction in which the tightening cord extends.