Underneath the Office Chair
The area underneath an office chair mainly features knob functional components, a lifting mechanism, a core chassis structure, and locking and unlocking functional components. Here is a detailed introduction:
Knob Functional Components: These include knobs for adjusting backrest hardness and reclining elasticity. The backrest hardness adjustment knob changes the support force of the backrest by rotating clockwise or counterclockwise. Rotating clockwise hardens the backrest, enhancing support, while rotating counterclockwise softens it, providing more flexible support. The reclining elasticity adjustment knob, located at the bottom of the chassis and cylindrical in shape, controls the rebound force of the chair back when reclining. It adjusts the pressure of springs or dampers through rotation to meet different users' needs for reclining comfort.
Lifting Mechanism: A circular knob or lever is installed beneath the seat, working in conjunction with a gas lift to achieve height adjustment. Rotating the lever upward causes the high-pressure nitrogen inside the gas lift to push the piston, raising the chair; rotating it downward lowers the chair, enabling a smooth lifting process. This allows users to adjust the seat height according to the height of their desk and personal usage habits.
Core Chassis Structure: The chassis serves as the 'command center' of the office chair, integrating three major functions: horizontal rotation, reclining angle control, and load-bearing connection. The horizontal rotation function enables the seat to rotate around the axis of the gas lift, enhancing office flexibility and facilitating communication with colleagues or access to items. Reclining angle control adjusts the tilt angle of the chair back through internal springs or fiberglass springs, supporting modes such as 'back-tilt', 'seat-tilt', or 'synchronous-tilt' to meet users' different resting and working posture needs. The load-bearing connection function ensures the upper end is connected to the seat frame and the lower end is fitted over the gas lift, transmitting lifting power and distributing body weight pressure to ensure the chair's stability and durability.
Locking and Unlocking Function: Some levers support inward pushing to lock the current state, such as fixing the reclining angle, and outward pulling to unlock it, allowing users to adjust and fix the seat state as needed during use.
