History of light contact switches

Publish Time:2023-02-13 Author:jiaxi Views:943

when the withdrawal of pressure switch is off, its internal structure is to rely on the metal shrapnel force changes to achieve on and off.
Tacti switch consists of: insert, base, shrapnel, button, cover plate, including waterproof light contact switch in the shrapnel with a layer of polyimide film (Figure).
Tactile switch have the advantages of small contact resistance, precise operating force error, and diversified specifications, and are widely used in electronic equipment and white goods such as: audio-visual products, digital products, remote controls, communication products, household appliances, security products, toys, computer products, fitness equipment, medical equipment, money detectors, laser pen keys, etc. Because the light touch switch on the environmental conditions (applied pressure less than 2 times the elasticity / ambient temperature and humidity conditions as well as electrical performance) large equipment and high load buttons are used conductive rubber or pot switch hardware shrapnel directly to replace, such as medical equipment, TV remote control, etc..


On the issue of five-pin Tactile switch feet: two pins as a group, the switch body to the correct pressure when the four pins phase conductive, the fifth pin for grounding role.
Tactile switch is the fourth generation of switch products developed with the requirements of the development of electronic technology, the earliest volume of 12mmx12mm, 8mm and 8mm two, now 6mm owed to 6om. product structure of vertical, horizontal and horizontal with ground end three, and now there are combined (3M, 4M, SM, 6M, SM) and potentiometer light touch switch combination of two types, to meet the domestic various electronic products requirements. Installation size has 6.smm fire 4.5mm, 5.5mm and 4mm and 6mm and 4mm three. Foreign countries have 4.5mm and 4.5mm small light contact switch and piece light contact switch, the piece light contact switch is suitable for surface assembly. Currently, the use of conductive rubber switches is also very popular .
Now there is a fifth generation switch - membrane switch, which has the same function as the Tactile switch and is mainly used in electronic instruments and CNC machine tools, but with high resistance and poor feel. In order to overcome the poor feel, instead of using a silver layer as a contact point inside the membrane switch, there are also contact reeds installed.