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US 2025/0151905 A1Published application
Seat-backrest linkage device
AssigneeUe Furniture Co., Ltd
InventorsZhengfu RUAN, Ji HE, Minghua JIN
Life of this patent
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AssigneeUe Furniture Co., Ltd
InventorsZhengfu RUAN, Ji HE, Minghua JIN
Estimating the term…
A seat-backrest linkage device includes a base, a bracket plate, a swing bracket and a connecting member. The connecting member includes a crank and a connecting plate connected as a whole. The swing bracket is provided between the base and the bracket plate. Two ends of the crank are respectively hinged to the bracket plate and the swing bracket. An slide groove guide mechanism is provided between the bracket plate and the swing bracket. The swing bracket and the base are hinged in middles, such that the swing bracket, the connecting member, and the bracket plate are capable of together tilting and swinging left and right relative to the base. The support plate seat can be raised and lowered relative to the base, and the swing bracket hinged to the base is arranged between the base and the support plate seat.
A seat-backrest linkage device, comprising a base (1), a support plate seat (2) configured to support a chair seat, a swing bracket (3), and a connecting member (5) configured to connect a backrest, wherein the connecting member (5) comprises a crank (501) and a connecting plate (502) that are arranged in a front-rear direction of the base (1) and connected as a whole, the swing bracket (3) is arranged between the base (1) and the support plate seat (2), two ends of the crank (501) are respectively hinged to the support plate seat (2) and the swing bracket (3), and a slide groove guide mechanism (8) configured to guide raising/lowering of the support plate seat (2) is provided between the support plate seat (2) and the swing bracket (3);
Dependencies are inferred from the claim text.