Which component is responsible for keeping an elevator car stationary when not in use?

The component responsible for keeping an elevator car stationary when not in use is the car brake. This is a critical safety feature in elevator systems. The car brake is designed to engage and securely hold the elevator car in place, preventing any unintended movement when the elevator is not being operated.

When the elevator reaches a designated floor and the doors are opening or closed, the brake engages to ensure that the elevator car remains level and stable, providing a safe environment for passengers to enter and exit. This braking system is essential for the overall functionality and safety of the elevator, as it helps prevent accidents that could ensue if the car were to move unexpectedly while unoccupied.

Other components, while important for the elevator’s operation, do not play the same direct role in maintaining the car’s stationary position when idle. For instance, the counterweight serves to balance the load of the car during movement, while the hoisting mechanism is responsible for raising and lowering the car. The door interlock ensures that the doors are securely closed before the elevator moves but does not directly keep the car stationary. Hence, the car brake is the sole component that ensures the elevator car remains stationary when not in use.