Office Chair Mechanical Chassis

The office chair mechanical chassis was a common type in the early days. Nowadays, there are various types of chassis in mid-to-high-end products, some of which can be regarded as improvements or variants of it. Common types include single-spring, dual-spring, adaptive, and fiberglass chassis, each with its own characteristics.

The single-spring chassis is a relatively basic type. It feels easy to sit on during the first half of its use, but becomes more strenuous in the latter half. This is because its travel is relatively short, and the spring force distribution is uneven. During prolonged use, this uneven spring force can cause fatigue for the user, affecting the overall experience.

The dual-spring chassis is an improvement over the single-spring type, adding an extra spring to assist in controlling the force. This design effectively solves the problem of uneven resistance during reclining, significantly enhancing the stability of the seat. Users of office chairs with dual-spring chassis can enjoy more comfortable and stable support, whether in a normal sitting position or reclining for a rest.

The adaptive chassis is a relatively intelligent type that can automatically adjust the reclining force according to the user's weight. This design meets the needs of people with different weights to a certain extent, providing users with a personalized and comfortable experience. However, when the user's weight exceeds the normal range, the adjustment function may become inaccurate, significantly reducing comfort.

The fiberglass chassis is characterized by minimal deformation during reclining, with uniform resistance throughout the travel. This allows users to feel smooth and stable support during the reclining process. However, due to differences in production processes and technological levels among manufacturers, the experience of fiberglass chassis varies greatly across different products.

In addition, traditional mechanical chassis achieve seat tilt angle adjustment and locking through mechanical locking mechanisms, such as four-position locking chassis, which allow users to fix the backrest angle in different working postures, maintaining the natural curvature of the lumbar spine and providing important support for ergonomic design.