US 12,622,527 B2Granted

Sofa unfolding device

AssigneeJason Furniture (Hangzhou) Co., Ltd.

InventorsYunhai Li, Yuanfeng Feng, Linlin Wu, Zhiyu Wang, Liang Cui

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Abstract

The present application relates to a sofa unfolding device capable of avoiding forward overturning, including a seat, a backrest assembly, a linkage assembly, and a leg rest assembly, wherein the linkage assembly is rotatably connected on the seat, the backrest assembly is rotatably connected to a rear end of the seat via the linkage assembly, the leg rest assembly is rotatably connected to a front end of the seat via the linkage assembly, a support mechanism is connected on the front end of the seat and comprises an abutting member and a support member, the abutting member is rotatably connected with the linkage assembly via a first pivot, and the support member is rotatably connected with the abutting assembly via a second pivot and is rotatably connected with the seat via a third pivot.

Claims19

Dependent claims

A sofa unfolding device, comprising a backrest assembly, a linkage assembly, and a seat;

wherein the linkage assembly is provided on the seat;
the backrest assembly is rotatably connected with the linkage assembly;
a support mechanism is provided at a front end of the linkage assembly;
and the support mechanism is configured to stretch simultaneously forward and downward with unfolding of the linkage assembly and abut against a ground to act as a support structure, the support mechanism comprises an abutting member and a support assembly;
the abutting member is rotatably connected with the linkage assembly via a first pivot;
the support assembly is rotatably connected with the abutting member via a second pivot;
and the support assembly is rotatably connected with the seat via a third pivot;
and the abutting member is configured to stretch simultaneously forward and downward with the unfolding of the linkage assembly and abut against the ground, and
a second support assembly is provided on the seat and configured to slide back and forth along the seat from a rear end of the seat to a front end of the seat, a linkage member is rotatably connected on the second support assembly via a fifth pivot and is rotatably connected with the support assembly via a sixth pivot, the second support assembly is configured to be driven by the linkage member to slide forward when the linkage assembly is unfolded, and the second support assembly comprises a support part located at the front end of the seat.

6 more elements

A sofa unfolding device, comprising a seat, a backrest assembly, a linkage assembly, and a leg rest assembly, wherein the linkage assembly is rotatably connected on the seat, the backrest assembly is rotatably connected to a rear end of the seat via the linkage assembly, the leg rest assembly is rotatably connected to a front end of the seat via the linkage assembly, a support mechanism is connected on the front end of the seat and comprises an abutting member and a support member, the abutting member is rotatably connected with the linkage assembly via a first pivot, the support member is rotatably connected with the abutting member via a second pivot and is rotatably connected with the seat via a third pivot, and the abutting member is configured to stretch simultaneously toward a front and a bottom of the seat with unfolding of the linkage assembly and abut against a ground.

Dependencies are inferred from the claim text.

Facts

Application: 18/205,610Filed 5 Jun 2023 · continuation in part
Priority: 22 Nov 2022
Published: US 2024/0164532 A123 May 2024
Granted: 12 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

A47C 1/0352
In combination with movably-coupled seat and back-rest: characterised by coupled seat and back-rest slidingly movable in the base frame, e.g. by…
A47C 17/163
Seating furniture changeable to beds by tilting or pivoting the back-rest: and a foot-rest
A47C 1/034
Having coupled concurrently adjustable supporting parts: the parts including a leg-rest or foot-rest
A47C 1/0342
The parts including a leg-rest or foot-rest: in combination with movable backrest-seat unit or back-rest