The use of microswitches and precautions is very critical, the following are some core points and extended explanations summarized from what you have provided:
I. Installation and fixing
Fixing method: Use small M2 screws to fix the switch body, make sure it is placed on a smooth surface, and use a torque of 0.098N-m or less to tighten it. Excessive tightening may cause damage to the internal structure of the microswitch, while excessive loosening may cause the switch to become unstable.
Prevent loosening: To prevent the screw from loosening, it is recommended that a washer be used under the screw, which increases the friction between the screw and the fixing surface and improves the stability of the fixing.
II. Operating Precautions
Direction of force applied: In the free state, force should not be applied directly to the button or exciter. The correct operation is to apply force in the vertical direction corresponding to the push button to ensure reliable operation of the switch.
Action setting: The action setting should be at least seventy percent of the O.T. value. Avoid setting the action body directly at the action limit when the switch is in the open state, as this may result in frequent opening and closing due to shocks, which in turn may affect the service life of the microswitch.
Performance and operating conditions
Action characteristics: When the action characteristics of the microswitch jump up and down by 20% of the specification value, it usually does not cause a malfunction. However, in order to ensure the stability and reliability of the switch, it is recommended to monitor its operating characteristics to ensure that they are within the allowable range.
Soldering Precautions: When soldering microswitches, use a soldering iron with temperature adjustment and keep the temperature below 320°C. The soldering process should be completed within 3 seconds. The welding process should be completed within 3 seconds to avoid damage to the internal structure of the switch caused by prolonged heating. At the same time, the welding process should avoid applying force to the terminal section to prevent deformation or damage to the terminal.
Current and Voltage Selection: When using microswitches at tiny currents and voltages, select low power circuit type switches and avoid high power types. This helps ensure the stability and reliability of the switch while extending its service life.
In summary, the use of microswitches requires attention to a number of aspects, including installation, operation, performance and conditions of use. Following these precautions will ensure proper operation and extend the life of the microswitch.
