Office Chair Base Classification
Office chair bases can be classified into the following types based on their functions and design features:
Standard Three-Function Base Equipped with a control lever and knob, it provides three basic functions: recline locking, seat height adjustment, and recline tension adjustment. The backrest recline angle is typically 125-130ยฐ, suitable for users with basic functional needs and limited budgets, commonly found in entry-level office chairs.
Ergonomic Four-Function Base Integrates control devices using wire control technology to avoid scattered operations, adding a seat front-to-back adjustment function. The recline angle is extended to 130-135ยฐ. This design is more ergonomic, suitable for those who need to work long hours or have higher requirements for sitting comfort.
Ergonomic Five-Function Base Adds a seat angle adjustment function to the four-function base, accommodating different body types or special sitting positions (such as sitting cross-legged). Its comprehensive functionality makes it a common configuration in high-end ergonomic chairs, suitable for users with extreme demands for personalized adjustments.
Self-Weighted Four-Function Base Upgrades the recline tension adjustment to automatic adjustment, sensing the user's weight through built-in mechanical structures and matching resistance, eliminating the need for manual adjustments. This type of base simplifies the operation process, suitable for users seeking convenience, commonly found in mid-to-high-end products.
Standard Base (Fixed) Has a simple structure, serving only as a connection, without recline functionality, commonly found in inexpensive bow chairs or four-legged chairs. Suitable for short-term use scenarios (such as conference chairs), but prolonged use can easily lead to fatigue.
Single Recline Base (Basic Tilt Base) Supports backrest recline but cannot lock the angle, suitable for basic employee chairs or home computer chairs. It is affordable but has limited functionality, unable to meet the need for a fixed recline position.
Single Recline Base with Lock (Lockable Tilt Base) Adds an angle locking function to the single recline base, allowing users to freely choose and fix the recline amplitude. This design balances cost and practicality, commonly found in mainstream-priced office chairs or entry-level ergonomic chairs.
Synchronized Tilt Base (Linked Tilt Base) When reclining, the seat and backrest move in proportion (such as 2:1), maintaining body stability and reducing waist pressure. It is mostly used in mid-to-high-end ergonomic chairs, suitable for users who need to recline for long periods or have high requirements for waist support.
Wire Control Base (One-Touch Control Base) Integrates all adjustment functions into a handle, using wire control technology to achieve seat height adjustment, recline locking, and other operations without bending over. This design greatly enhances usability, commonly found in high-end products or gaming chairs.
Gravity Sensing Base (Self-Adjusting Tilt Base) Senses the user's weight through built-in sensors and automatically adjusts the recline resistance to ensure uniform support for users of different weights. This type of base has a strong technological feel, suitable for high-end users seeking an intelligent experience.
