Back-support assembly and chair with back-support assembly

EP4757667A1Pending Publication Date: 2026-06-17RAZER ASIA PACIFIC
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Patent Information

Application Number
EP2023948621
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-08-07
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Conventional chairs often lack adequate lumbar support, leading to discomfort and posture-related issues due to generic backrest designs that fail to cater to individual ergonomic needs.

Method used

A back-support assembly for a chair that includes a displaceable member and a motion converter, allowing for adjustable lumbar support by moving the displaceable member along a primary movement axis and coupling back-support members to the displaceable member via a link arrangement.

Benefits of technology

The solution provides customizable lumbar support, allowing users to adjust the height and depth of lumbar supports to accommodate individual spinal alignment needs, thereby enhancing comfort and preventing strain during prolonged sitting.

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Abstract

According to various embodiments, there may be provided a back-support assembly for a chair. The back-support assembly may include a back-support mounting frame and a displaceable member that is displaceable relative to the back-support mounting frame. The back-support assembly may further include a motion converter that operatively couples the displaceable member to the back-support mounting frame. The motion converter may be configured to convert an input motion applied to the motion converter into an output motion that displaces the displaceable member along the primary movement axis. The back-support assembly may further include a link arrangement for coupling one or more back-support members to the displaceable member, the link arrangement being operatively engaged with the displaceable member so as to be movable relative to the displaceable member along a secondary movement axis that is non-parallel to the primary movement axis.
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