US 12,336,640 B2
Armrest-foldable chair
Libin Chen, Changzhou (CN); and Qinglei Kong, Changzhou (CN)
Assigned to Libin Chen, Changzhou (CN)
Filed by Libin Chen, Changzhou (CN)
Filed on Aug. 8, 2023, as Appl. No. 18/231,257.
Claims priority of application No. 202222131189.0 (CN), filed on Aug. 13, 2022.
Prior Publication US 2024/0049882 A1, Feb. 15, 2024
Int. Cl. A47C 4/28 (2006.01); A47C 7/54 (2006.01)
CPC A47C 4/286 (2013.01) [A47C 7/54 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An armrest-foldable chair, comprising two opposed folding mechanisms, and a first linkage mechanism and a second linkage mechanism disposed between the two opposed folding mechanisms, wherein each of the two opposed folding mechanisms comprise a main support rod, a front support rod, a rear support rod, a seat rod, a back rod, an armrest rod, an auxiliary rod;
a first connection piece slidably connected with the back rod is disposed on the back rod; a second connection piece slidably connected with the front support rod is disposed on the front support rod; a third connection piece slidably connected with the rear support rod is disposed on the rear support rod; and a fourth connection piece slidably connected with the main support rod is disposed on the main support rod;
a first end of the auxiliary rod is hinged to the first connection piece, and a second end of the auxiliary rod is hinged to an upper end of the front support rod; a lower end of the main support rod is hinged to the second connection piece, and an upper end of the main support rod is hinged to the armrest rod, an end of the armrest rod away from the main support rod is hinged to the back rod; a lower end of the back rod is hinged to the third connection piece, the seat rod is hinged to the fourth connection piece and an end of the seat rod away from the fourth connection piece is hinged to the back rod; the seat rod and the front support rod are crossed and hinged together at a crossing position; an upper end of the rear support rod is hinged to the front support rod.