1. Overview of micro switch
Micro switch is a common electronic component, also known as limit switch, mechanical switch or push button switch. It consists of a spring contact and a movable arm, which controls the on and off of the circuit by manual or automatic operation. Micro switches are widely used in various electrical equipment, such as household appliances, industrial machinery, automobiles, etc.
2. Structure of micro switch
Micro switch mainly consists of three parts: contact part, operating part and shell part.
The contact part includes two metal sheets, static contact and dynamic contact. The static contact is fixed in the shell, while the dynamic contact is connected to the operating part by a spring.
The operating part consists of a button, a lever and a spring. When the button is pressed, the spring compresses and moves the lever down, so that the movable arm contacts the static contact and turns the circuit on and off.
The shell part is the protective cover of the micro switch, which prevents dust, water and other substances from entering the micro switch and provides additional protection.
3. Working principle of micro switch
The micro switch can control the on and off of the circuit by manual or self-operation. When the micro switch is in the closed state, a closed circuit is formed between the static contact and the dynamic contact, and the current can flow through the micro switch. When the micro switch is in the open state, the circuit is disconnected between the static contact and the dynamic contact, and the current will be cut off.
In practical applications, micro switches are often used as limit switches. For example, in industrial machinery, when the operation of the machine reaches a certain position, the micro switch can automatically trigger and stop the operation of the machine.
4. Application of micro switches
Due to its simple structure, easy installation and use, and high reliability, micro switches have been widely used in various electrical equipment. The following are some common application scenarios:
1. Household appliances: such as washing machines, ovens, refrigerators, etc.
2. Industrial machinery: such as plate rolling machines, CNC machine tools, etc.
3. Automobiles: such as car door locks, car lights, etc.
4. Medical equipment: such as operating tables, medical instruments, etc.
5. Summary
The micro switch is a common electronic component, which consists of three parts: the contact part, the operating part, and the shell part. The on/off of the circuit is controlled by manual or self-operation. Due to its simple structure, easy installation and use, and high reliability, micro switches are widely used in various electrical equipment.
