In our life, key switches are very common, such as round key buttons, square illuminated buttons, etc. These are all available for consumers to choose and use. But sometimes we are very troubled, how is the key switch installed?
1. When the buttons are installed on the panel, they should be neatly arranged and arranged reasonably. They can be arranged from top to bottom or from left to right according to the starting sequence:
2. The installation and fixation of the button should be firm, and the wiring should be reliable. Apply a red button to stop, green or black to start or power up, don't get me wrong.
3. Due to the small distance between the button contacts, short-circuit faults are likely to occur if there is oil pollution, so the contacts should be kept clean.
4. The button board and button box on which the button is installed must be metal, and try to connect them with the general grounding bus of the machine tool. For the hanging button, a special grounding wire must be provided, and a metal pipe shall not be used as the grounding wire.
5. When the button is used in high temperature occasions, it is easy to cause the plastic deformation and aging, which will lead to loosening, resulting in a short circuit between the wiring screws. An insulating plastic tube can be added to the wiring screws to prevent short circuits.
6. The button with the indicator light is heated by the bulb, and the plastic lampshade is easily deformed after long-term use. The voltage of the bulb should be reduced to prolong the service life.
7. The "stop" button must be red; the "emergency stop" button must be a red mushroom head; the "start" button must have a protective retaining ring, and the protective retaining ring should be higher than the button head to prevent accidents Touch to make the device malfunction.
Key switch, button switch There are many structural varieties, which can be divided into ordinary button type, mushroom head type, self-locking type, self-resetting type, rotary handle type , with indicator light, with lighted symbol and key, etc., there are single button, double button, three button and different combinations, generally the building block structure is used, which consists of button cap, return spring, bridge contact and shell, etc. The composition is generally made into a composite type, with a pair of normally closed contacts and normally open contacts, and some products can increase the number of contact pairs by connecting multiple components in series. There is also a self-restraint button, which can automatically maintain the closed position after being pressed, and can be opened only after the power is turned off.
To say that key switches, button switches are often used products that are not in the electronics industry Nope, because the TVs, stereos and video recorders we often use all use key switches. Computers used in offices, game consoles that can be seen in game halls, fax machines used by companies, walkie-talkies used by security guards, company printers, copiers, machine tool control equipment in workshops, some instruments and our home use some household appliances.
