Headrest Set for Office Chair

Abstract

A headrest set for office chairs includes a bracket whose lower end is fastened on a rear side of a seat back while a top end of the bracket connects with and supports a backside plate of the headrest, a headrest, and an elastic buffering member arranged between the backside plate of the headrest and the top end of the bracket. By deformation of an elastic member, the headrest set has buffering effects. When the user's head suddenly leans against a headrest surface or the user changes the posture from sitting to reclining, the impact caused by the reaction force of the headrest surface is buffered and the headrest surface is automatically adjusted so as to enhance comfort of the headrest.

1 . A headrest set for office chairs comprising a bracket, a headrest and an elastic buffering member; wherein
 the bracket whose lower end is fastened on a rear side of a seat back while a top end of the bracket connects with and supports a backside plate of the headrest,   the headrest connects with the top end of the bracket so that a headrest surface is above top of the seta back for users' heads to lean against;   the elastic buffering member disposed between the headrest and the top end of the bracket and having at least one elastic member so that the impact from the headrest surface is buffered by deformation of the elastic member;   wherein while the user's head leaning against the headrest, impact of the headrest is buffered by the elastic member of the elastic buffering member and by pressing of the user's head, the headrest move backwards corresponding to the bracket so as to adjust a relative position of the headrest toward the seat back.   
     
     
         2 . The device as claimed in  claim 1 , wherein the headrest further comprising a backside plate while a slot base and an insertion hole are arranged on a center area of the backside plate so that a front part of a connecting member is mounted inside the horizontal slot base movably and a rear part of the connecting member inserts through the insertion hole. 
     
     
         3 . The device as claimed in  claim 1 , wherein a hollow part is arranged on the top end of the bracket and shape of the cross-section of the hollow part corresponds to the shape of the cross-section of a part of a rear part of the connecting member so that the rear part of the connecting member is sleeved into the hollow part of the bracket movably. 
     
     
         4 . The device as claimed in  claim 1 , wherein the elastic buffering member comprising a connecting member and an elastic member that is a coil compression spring inserted into the hollow part on the top end of the bracket while a rear end of the elastic member is fixed so as to form a stopping end; a front part of the connecting member is mounted inside the headrest movably while a rear part of the connecting member extends backward and movably inserts into the hollow part on the top end of the bracket so that the rear part of the connecting member leans against a head part of the elastic member; when the headrest is applied with reaction force due to user's head against the headrest, the headrest presses the connecting member to move backward and synchronously presses the head part of the elastic member to move backward so that the elastic member is compressed elastically for reducing height of the headrest. 
     
     
         5 . The device as claimed in  claim 3 , wherein the elastic buffering member comprising a connecting member and an elastic member that is a coil compression spring inserted into the hollow part on the top end of the bracket while a rear end of the elastic member is fixed so as to form a stopping end; a front part of the connecting member is mounted inside the headrest movably while the rear part of the connecting member extends backward and movably inserts into the hollow part on the top end of the bracket so that the rear part of the connecting member leans against a head part of the elastic member; when the headrest is applied with reaction force due to user's head against the headrest, the headrest presses the connecting member to move backward and synchronously presses the head part of the elastic member to move backward so that the elastic member is compressed elastically for reducing height of the headrest. 
     
     
         6 . The device as claimed in  claim 1 , wherein the bracket further comprising an upper section and a lower section while the upper section is sleeved into the lower section; an elastic ball lock is disposed on a bottom of the upper section and a plurality of vertically arranged locking slots corresponding to the elastic ball lock is arranged on an inner surface of the lower section so that when the upper section slides vertically inside the lower section, the upper section stops at a certain height inside the lower section by the elastic ball lock locked into one of the locking slots. 
     
     
         7 . The device as claimed in claim I, wherein the headrest surface of the headrest is disposed with a plurality of suspending pieces.