Brake Function Office Chair

There are two main types of office chairs with brake functions, and their braking principles and characteristics are as follows:

Footwheel Brake Device of RENBERGET Office Chair

The braking function of the RENBERGET office chair is achieved through an automatic brake device built into the footwheels. Its core design is to trigger a locking mechanism when standing up, keeping the chair stationary; and automatically release the lock when sitting down, restoring mobility. This function relies on springs or gravity-sensing components inside the footwheels: when the user stands up and leaves the seat, the absence of gravity triggers the spring to reset, and the locking structure of the footwheel (such as a buckle or friction plate) comes into contact with the wheel, preventing it from rolling; when the user sits back down, gravity presses the spring, the locking structure separates, and the footwheel regains free rolling. This design requires no manual operation and is suitable for office scenarios that require frequent standing up/sitting down, such as answering phone calls or organizing files, avoiding safety hazards caused by accidental chair sliding.

Dual Locking Mechanism of Lightweight Footwheel Dual-brake Office Chair

The lightweight footwheel dual-brake office chair adopts a linked dual-locking design, simultaneously controlling the rolling and rotational freedom of the wheels by stepping on the brake pedal. Its working principle is as follows:

1. Cam Mechanism Linkage: When the brake pedal is stepped on, the cam structure simultaneously acts on two key parts:
   • Wheel Outer Edge Friction Surface: The cam presses the brake pad against the outer edge of the wheel, preventing it from rolling through friction;
   • Steering Bracket Positioning Teeth: The other end of the cam engages with the positioning teeth slots of the steering bracket, restricting the rotational direction of the footwheel (i.e., the chair cannot turn).
2. Materials and Durability: The base of high-quality dual-brake footwheels is usually made of cold-rolled steel, providing high-strength support; the brake pads are nylon-coated, ensuring friction while reducing wear. After durability testing, the braking force decay can be controlled within a reasonable range (for example, the braking force does not decrease by more than 15% after 100,000 steps), ensuring long-term use stability.

The advantage of dual locking is a significant improvement in safety: for example, on inclined surfaces or in scenarios where the chair's position needs to be fixed (such as cleaning the floor or repairing equipment), it can prevent the chair from tipping over due to external forces causing it to slide or turn. In addition, the linkage mechanism simplifies the operation steps, and users do not need to lock the rolling and rotational functions separately.