Infinite Locking Office Chair

The infinite locking office chair is a type of office chair that achieves stable suspension of the backrest at any angle through a damping balance system. Its core function is 'infinite suspension,' meaning it can freely lock within the full recline range without manual positioning.

Technical Principle

Infinite suspension relies on the dynamic balance of precision spring sets and damping structures: when a person leans back, the support force of the backrest and gravity are matched in real-time through the damping system, enabling the backrest to recline slowly when leaning back, lock instantly when released at any angle, and return to the upright position when sitting up. High-end models like the Ergoup Youpu Butterfly Ergonomic Office Chair are also equipped with a synchronized gliding chassis, where the seat slides forward synchronously during recline to ensure continuous waist support and prevent suspension.

Core Advantages

1. Higher Angle Freedom
   It covers the full range from 100° for focused work to 135° for relaxation, supporting fine adjustments of 0.5° to avoid the stuttering or jumping issues caused by fixed positions in traditional stepped recline chairs, meeting the needs of multiple scenarios.

2. Significantly Reduced Lumbar Pressure
   Through dynamic pressure relief technology, lumbar pressure can be reduced by approximately 32%, minimizing the risk of strain from prolonged sitting in a single position, especially suitable for those working long hours.

3. Smoother Operation Experience
   Fully adaptive without manual adjustments, it avoids frequent lever interruptions to the work rhythm, enhancing efficiency. For example, the Heiling B1Pro Office Chair achieves an 'infinite locking effect wherever you want to stop' through a chassis unlocking lever.

Beware of 'Pseudo-Infinite Suspension' Phenomena

1. Stepped Illusion Type: Essentially still a stepped chair, it only creates an 'infinite' illusion by blurring the step markings;
2. Insufficient Damping Type: After suspension, the backrest will sag after more than 10 seconds due to insufficient damping force;
3. Angle-Limited Type: Only certain intermediate angles can be suspended, with the end angles unable to lock stably;
4. Non-Linked Pseudo-Suspension Type: The seat does not move forward synchronously with the backrest during recline, causing the waist to suspend and lose support.

Brands that truly achieve infinite locking must overcome three barriers: cost, tuning, and structural linkage. For example, the Ergoup Youpu Butterfly Ergonomic Office Chair adopts a flagship synchronized gliding chassis + independent damping adjustment solution, ensuring suspension stability and waist fit through precise mechanical structures.