A new lumbar support adjustment mechanism

By employing a toothed meshing locking and elastic reset coordinated control mechanism, the problems of small adjustment range and unstable support in traditional lumbar support adjustment mechanisms are solved, achieving large stroke adjustment and stable support, thus improving the user experience.

CN224387077UActive Publication Date: 2026-06-23JIANGSU ARUNA SEAT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU ARUNA SEAT CO LTD
Filing Date
2025-07-03
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional lumbar support adjustment mechanisms suffer from limited adjustment range, unstable support, and complex operation, making it difficult to meet the needs of users with different body types and diverse sitting postures.

Method used

It adopts a toothed engagement locking and elastic reset collaborative control mechanism. The large stroke adjustment is achieved through the engagement and separation design of the sliding block and the toothed structure of the base. It also forms a self-locking effect under pressure. Combined with the handwheel box drive wire control cable, it realizes flexible adjustment and stable support of the waist support.

Benefits of technology

It achieves flexibility and stability with large-stroke linear adjustment, adapts to the lumbar support needs of various sitting postures, and improves user experience and ease of operation.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224387077U_ABST
    Figure CN224387077U_ABST
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Abstract

The utility model discloses a novel waist support adjusting mechanism, including installation bottom plate, waist and adjusts the mechanism and hand wheel box, installation bottom plate is installed on the chair back, and the waist and adjusts the mechanism to install on the installation bottom plate, and the hand wheel box passes through the wire control pull line control waist and adjusts the mechanism, and the sliding block is removed through the wire control pull line control of pulling both ends, and then drive support block jacks up the waist support fixed plate and rotates around the plug screw, to realize the waist support jacks up and reduces, through the meshing separation mechanism of sliding block and base tooth structure, realizes big stroke stepless sliding adjustment, when being pressed, then through the tooth surface rigid occlusion forms self -locking. Utilize the double -line control pull line control of hand wheel box both ends, realizes accurate synchronous displacement control. The mechanism has realized the effect integration of wide range linear regulation, rigid anti -backoff support and convenient operation, and the adaptability of waist support and user operation experience have been improved significantly.
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