Perhaps many people have never heard of the micro switch, let alone know what it is. In fact, in our lives, it is necessary to use it frequently, as long as it is an electronic device, it is inseparable from it. Today we will take a look at the principle of the micro switch and what are the precautions for the micro switch , let's take a look!
1. Principle of micro switch
The mechanism of the micro switch is composed of tiny contact intervals and fast action. In those devices that need to be frequently switched circuits, they are automatically controlled and safe protected. They are usually widely used in electronic equipment, instruments, mines, and power. Systems, household appliances, aerospace, missiles, tanks, and many other fields, its principle is that the external mechanical force passes through the transmission element, and then the force is applied to the action reed, when the displacement of the action reed reaches a critical point , It will produce instantaneous action, so that the moving contact and fixed contact of the end of the action reed can be quickly connected or disconnected, and the reverse action can be completed instantly.
Second, what are the precautions for the micro switch
1. If it is the main body of the fixed switch, be sure to use M2 small screws, and then place the small screws on the smooth surface with a torque of 0.098N · m or less. In addition, in order to prevent the screws from loosening, it is best Also use washers under the screws.
2. In the free state, it must be noted that the force cannot be directly applied to the button or actuator, but should be applied to the vertical direction corresponding to the button when it is used.
3. The operation setting after the operation of the micro switch should be more than 70% of the OT value. When the switch is turned on, the operation body cannot be directly set at the position of the operation limit, otherwise it is easy The opening and closing due to the impact occurs, which shortens its service life.
4. Even if the action characteristic of the micro switch jumps up and down about 20% of the specification value, it will not cause malfunction due to changes.
5. In the case of welding with a micro-switch, be sure to remember to use an electric temperature of 320 ℃ max.), And complete the operation within 3 seconds, and must not be on the terminal part during the completion of the operation Apply force.
6. If the micro switch is used under the small current and voltage, it is recommended to use the low-power circuit type, not the high-power circuit.
Xiaobian Summary: The above is the principle of micro-switch on the share of small series as well as the entire contents of which micro-switch has the precautions. The micro switch is mainly composed of five categories, so be sure to understand before buying. If you want to know more about decoration, please continue to pay attention to this website!
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