US 11,744,368 B2
Mechanical extension apparatus for reclining seat having extendable chair unit
Xiaohong Li, Jiangsu (CN); Wei Liu, Jiangsu (KR); Gang Song, Jiangsu (CN); and Yuankun Li, Jiangsu (KR)
Assigned to Remacro Technology Co., Ltd., Jiangsu (CN)
Filed by REMACRO TECHNOLOGY CO., LTD., Jiangsu (CN)
Filed on Oct. 28, 2021, as Appl. No. 17/513,863.
Application 17/513,863 is a continuation of application No. PCT/CN2021/119049, filed on Sep. 17, 2021.
Claims priority of application No. 202110534473.X (CN), filed on May 17, 2021; and application No. 202110651109.1 (CN), filed on Jun. 10, 2021.
Prior Publication US 2022/0361674 A1, Nov. 17, 2022
Int. Cl. A47C 1/035 (2006.01); G05G 11/00 (2006.01); A47C 1/0355 (2013.01)
CPC A47C 1/0355 (2013.01) [A47C 1/0352 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A mechanical extension apparatus, applied to an extendable seat with a seat, a backrest and a footrest, comprising:
a reclining apparatus comprising multiple links attached to the seat, the backrest and the footrest of the extendable seat, wherein the reclining apparatus is configured to convert the extendable seat between a sitting position, a TV position, and a lying position, and wherein, in the sitting position, the backrest is substantially upright and the footrest is folded below the seat; in the TV position, the backrest is substantially upright and the footrest is substantially horizontally disposed in front of the seat; and in the lying position, an angle between the seat and the backrest is generally larger than the angle between the seat and the backrest in the TV position;
a support assembly, wherein the support assembly support the mechanical extension apparatus directly or indirectly on ground, and the support assembly comprises a gliding support assembly or a rocking support assembly;
a leg extension unit for mounting the footrest, a seat bracket for mounting the seat, and a backrest bracket for mounting the backrest, wherein the leg extension unit, the seat bracket, and the backrest bracket are pivotally connected in sequence;
a pull link, wherein a rear end of the pull link is pivotally connected to the backrest bracket in front of a pivot connection point between the seat bracket and the backrest bracket, a front end of the pull link is pivotally connected to the support assembly; and
an actuator that is attached to the reclining apparatus, wherein the actuator is configured to electronically convert the extendable seat between the sitting position and the TV position; and
wherein the reclining apparatus is configured to convert the extendable seat between the TV position and the lying position by non-electric actuation.