Lift chair with adjustable backrest

By incorporating a serrated locking structure and hooks on the backrest frame of the adjustable chair, combined with elastic components and a rotation range limiting structure, the problem of the backrest being unable to be adjusted freely is solved, enabling multi-angle adjustment of the backrest and improving the flexibility and comfort of use.

CN224474225UActive Publication Date: 2026-07-10XINXIANG PINGYUAN AVIATION TECH ENGCO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XINXIANG PINGYUAN AVIATION TECH ENGCO
Filing Date
2025-07-16
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The backrests of existing height-adjustable chairs cannot be adjusted at will, which limits their adaptability and makes them unable to meet the needs of different work environments.

Method used

An adjustable chair with a backrest was designed. By setting a serrated locking structure and hook on the backrest frame, and using elastic elements and a rotation range limiting structure, the backrest can be adjusted at multiple angles. Combined with the design of sliding parts and follower rods, the backrest can be flexibly adjusted.

Benefits of technology

The chair back is adjustable to multiple angles to adapt to different work environments, improving its flexibility and comfort.

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    Figure CN224474225U_ABST
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Abstract

The utility model relates to a lifting chair with adjustable backrest, the cushion frame has the extension part of the rear extension to the rear side of backrest frame, the both sides of backrest frame are provided with the support rod of oblique setting in the rear, the lower extreme of support rod is hinged on the extension part, the upper extreme of support rod is close to the side of backrest frame and has the sawtooth shape and stops structure, and backrest frame has the hook portion that can stop with each card slot of sawtooth shape and stops structure in proper order. The both sides of backrest frame are provided with the support rod of oblique setting, the upper extreme of support rod is close to the side of backrest frame and has the sawtooth shape and stops structure, backrest frame has the hook portion that can stop with each card slot of sawtooth shape and stops structure in proper order, when needing to adjust backrest frame, push backrest frame and turn to the vertical direction and separate hook portion and sawtooth shape and stops structure, after rotating backrest frame to the appropriate position, rotate support rod and carry out the positioning of hook portion and sawtooth shape and stops structure in the appropriate position and stop to can complete the adjustment of backrest frame.
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Citation Information

Patent Citations

  • Convertible creeper assembly

    CN103781601A