Ball switch is a kind of vibration switch that controls the circuit opening or opening by the principle of bead rolling contact with the guide pin. It has a wide range of applications in a variety of fields, such as tire pressure monitoring systems, bicycle lights, digital photo frame rotation. In recent years, the application of ball switches in thermal water kettles has gradually received attention, which has brought more intelligence and safety to this daily product.
First, the working principle of the ball switch
The working principle of the ball switch is based on the rolling of the internal steel ball, and when the external vibration or tilt occurs, the steel ball will roll inside the switch, changing the contact state between it and the contact point, thus controlling the circuit on and off. In the application of thermal water bottles, the ball switch is usually installed in a specific position of the lid or the body of the cup to detect the opening and closing state of the lid or the tilt Angle of the body.
When the lid of the thermal kettle is closed or the cup body is in the vertical state, the steel ball inside the ball switch is in a stable position, so that the contact point remains disconnected and the circuit is disconnected. At this time, the thermal kettle will not perform any heating or cooling operation. When the lid is opened or the cup body is tilted to a certain Angle, the steel ball rolls and contacts the corresponding contact point, the circuit is closed, and the thermal insulation kettle can start heating or maintain the temperature according to the preset function.
