Office Chair Base Lock
Office chair base locks mainly include types such as positioning lock bases, rocking function base locks, and in-place locking bases, with differences in functions and operating methods among different types.
Positioning Lock Base: Some ergonomic chairs on the market use positioning lock bases, such as the Act series from Yoee and the E3 series from Hbada. However, currently, there is limited information on the specific operating methods and functional details of positioning lock bases. It is only clear that they are applied in these specific series of ergonomic chairs. It is speculated that they may play a specific role in the positioning and fixation of chairs to meet users' needs for chair stability and specific sitting postures.
Rocking Function Base Lock: The rocking function is achieved through the linkage between the base's spring-damping system and the rotating shaft. When the seat and the backrest synchronously rock backward and tilt forward to return to the original position, this base lock comes into play. The base has a built-in adjustable damping spring. Pulling open the lock can activate the rocking function, allowing the chair to rock freely backward. Pushing back the lock can lock it in place, keeping the chair stable. Some models also support infinite suspension, meaning they can stop and remain stable at any angle. They also have a resistance fine-tuning function, allowing users to adjust the backward resistance according to their own needs for a more comfortable user experience.
Common Swivel Chair Base Lock (In-place Locking Base): Common swivel chairs generally use in-place locking bases. In terms of operation, there is a handle on the right side. Pushing it to the left can lock the backrest, keeping it in a fixed position. Pulling it to the right can unlock it, allowing the backrest to move. In addition, there is a cylindrical knob on the base. Turning it clockwise can enhance the rebound support force, providing stronger rebound when the backrest moves. Turning it counterclockwise can weaken the rebound support force, meeting different users' personalized needs for the chair's support strength.
Example of an Ergonomic Chair Base Lock (Taking the Daboli S20 Ergonomic Chair as an example): The backward tilt elasticity adjustment is located below the seat cushion and is operated using plus and minus signs. Moving in the plus direction can increase the elasticity, while moving in the minus direction can decrease it. There is a control lever on the right side of the seat cushion. Pulling out the control lever allows the chair to rock freely backward. When it reaches the desired angle, pushing back the control lever can lock it. To unlock it, pull out the control lever while applying a force to the back, and the chair will return to an upright position.
