Tactile switch also known as key switch, first appeared in Japan [referred to as: the use of sensitive switches to meet the operating conditions of the operating pressure switch to the direction of the operating pressure switch is turned on, when the switch is disconnected when the pressure is off, the The internal structure is by metal shrapnel force changes to achieve on-off.
Touch switch by: insert, base, shrapnel, buttons, cover composed of one of the waterproof type touch switch on the dome add a layer of polyimide film.
Tactile switch with a small contact resistance load, the accuracy of the operating error, the diversity of specifications and other advantages, in the electronic equipment and white goods and other aspects of a wide range of applications such as: audio-visual products, digital products, remote control, communications products, home Electrical appliances, security products, toys, computer products, fitness equipment, medical equipment, Yanchao pen, laser pen keys and so on. Because the touch of the switch on the environment conditions (exert pressure less than 2 times the elastic / environmental temperature and humidity conditions and electrical properties) large equipment and high-load buttons are used conductive rubber or metal switch directly to replace the metal dome, such as medical equipment, TV remote control and so on. The company is located in:
Pin on the five-foot touch switch problem: two pins as a group, the correct pressure to the switch body when the four pin phase conduction, the fifth pin is grounded.
Tactile switch with the development of electronic technology and the development of the fourth generation switch products, the earliest volume of 12mmx12mm, 8mm and 8mm two, now 6mm owed 6om. There are three types of products, vertical, horizontal and horizontal with the ground, and now there are two combinations (3M, 4M, SM, 6M, SM) and potentiometer touch switch combination to meet the domestic requirements of various electronic products . Installation size 6.smm fire 4.5mm, 5.5mm and 4mm and 6mm and 4mm three. Foreign 4.5mm 4.5mm and has a small touch switch and chip tactile switch, chip tactile switch suitable for surface assembly. The current use of conductive rubber switch is also very popular.
Now there are the fifth generation of switch - membrane switch, the same function and touch switch, mainly for electronic instruments and CNC machine tools, but the resistance, feel poor. In order to overcome the phenomenon of poor touch, but also in the membrane switch is not made of silver contact point, but install the contact reed.