A tactile switch is an electronic switch typically used to control the opening and closing of circuits. Its working principle is as follows:
The tactile switch mainly consists of two metal contacts and a spring. The two metal contacts are connected to the two endpoints of the circuit, respectively, and the spring keeps the two contacts in a normally closed state. When the user presses the switch, the spring is compressed, the two contacts are separated, and the circuit is disconnected. When the user releases the switch, the spring returns to its original state, the two contacts reconnect, and the circuit is re-established.
The working principle of the tactile switch is mainly based on the interaction between the mechanical spring and metal contacts to achieve the switching of the circuit. Here is a detailed explanation of its working principle:
Basic structure:
The tactile switch usually consists of a button, a casing, contacts, and a mechanical spring.
The button is generally made of plastic or metal material and can be pressed to control the switch.
The casing protects the internal components and is also usually made of plastic or metal.
The contacts are made of metal material and are used to achieve circuit contact when the button is pressed.
The mechanical spring is made of spring steel, which has elasticity and resilience.
Working principle:
When the button is pressed, the mechanical spring bends and compresses, allowing metal contacts to come into contact and thus completing the circuit.
When the button is released, the mechanical spring rebounds, separating the metal contacts and thus breaking the circuit.
Due to its advantages such as small contact resistance, precise operating force tolerance, and diverse specifications, tactile switches are widely used in various fields such as audio-visual products, digital products, remote controls, communication products, household appliances, and security products. Tactile switches usually have the characteristic of fast response, which can complete the opening and closing operation of the circuit in a short time.