Keyboard switch for some use of the structure is particularly serious, usually we will understand and understand the structure of the key switch, after finishing, we will communicate and communicate with you, so that we can better complete the use of the key switch after detailed understanding and more familiar with the light vehicle when maintenance and replacement.
Keyboard switch: A switch with a small contact interval and a fast-acting mechanism, which operates with a prescribed stroke and force and is covered by a shell, and has a driving rod outside. (hereinafter referred to as switches) Contact: In the type of switch, compared with semiconductor switches with switching characteristics, mechanical switches of contacts are used to realize the functions of switches. Contact form: Electrical input and output circuits of contacts are formed according to various uses.
Rated value: Generally refers to the value used as the guarantee reference for switching characteristics and performance, such as rated current, rated voltage, etc. The premise is specific conditions (load type, current, voltage, frequency, etc.).
Resin immobilization (plastic-sealed terminals): After wiring the terminals with wires, this part is fixed by filling resin, eliminating the exposed charged parts to improve the anti-dripping method.
Insulation resistance: refers to the value of resistance between non-connected terminals, between terminals and non-charged metal parts, between terminals and ground.
Voltage withstanding: The critical value of insulating damage will not be caused by the high voltage added by the key switch manufacturer for 1 minute at the specified measuring position.
Contact resistance: It represents the resistance of the contact part of the contact point, but generally represents the resistance value of the conductor resistance including the spring and terminal part.
Vibration resistance: When the vibration key switch is used by misoperation, because the vibration closed contact points are not separated in the vibration range within the specified time.
Impact Resistance: Durable impact means that the key switch will not be damaged by the impact of the machine in transportation or installation, V and meet the impact within the range of action characteristics.
Mis-action impact refers to the impact range of the closed contact when the key switch is used because of the impact within a specified period of time.
The formation of these basic parameters allows us to use the button switch more clearly these problems, hoping to help you.
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