Interlocking device, bracket, seat unit, and seat for zero backrest gap

The interlocking device optimizes angular relationships to allow seat backrests to be installed flush against walls without gaps, enhancing space efficiency and comfort by offsetting backward rotation with forward movement, thus improving structural stability and flexibility.

KR103001101B1Active Publication Date: 2026-08-05REMACRO TECHNOLOGY CO LTD
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Patent Information

Application Number
KR1020237041294
Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-05-31
Filing Date
2022-03-15
Publication Date
2026-08-05
Estimated Expiration
2042-03-15

AI Technical Summary

Technical Problem

Conventional seat backrests cannot be installed flush against a wall without gaps, occupying significant space, and suffer from limited backrest angle adjustment, leading to poor comfort and restricted movement.

Method used

An interlocking device with specific angular relationships and mechanisms between the backrest mechanism, bracket side plate, and interlocking mechanism, allowing the backrest to rotate forward and upward to offset backward rotation, enabling gapless installation against walls and optimizing angle adjustments.

Benefits of technology

The interlocking device ensures the seat backrest can be installed flush against a wall without gaps, saving space, improving structural stability, and enhancing comfort by increasing deployment distance and reducing sitting height.

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Abstract

An interlocking device for zero backrest gap, a bracket, a seat unit, and a seat are provided, wherein the interlocking device for zero backrest gap comprises a base (1), an interlocking mechanism (2), a bracket side plate (3), and a backrest mechanism (4), wherein the interlocking mechanism (2) is rotatably connected between the base (1) and the bracket side plate (3), and the backrest mechanism (4) is rotatably connected to the bracket side plate (3) and the interlocking mechanism (2), respectively; a side plate interlocking point (31) and a backrest point (32) are installed on the bracket side plate (3), and the bracket side plate (3) is rotatably connected to the interlocking mechanism (2) at the side plate interlocking point (31), and the bracket side plate (3) is rotatably connected to the backrest mechanism (4) at the backrest point (32); The backrest mechanism (4) includes a backrest mounting member (41) and a backrest interlocking member (42), and when the backrest mechanism (4) is folded to a limit position, the angle α between the connecting line of both ends of the backrest mounting member (41) and the connecting line of the backrest point (32) and the side plate interlocking point (31) is an acute angle. The seat bracket can satisfy the design of various styles of seat backrests (5), and the seat backrest (5) of the seat unit can be installed close to the wall without gaps to save space and improve aesthetics.
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