4 * 4 when the light touch switch is used, the switch can be turned on by quietly pressing the switch button. When the hand is released, the switch will be turned off. Its internal structure is completed by the force bouncing of metal shrapnel. 4 * 4 light touch switch is widely used in household appliances due to small touch resistance, crisp touch when pressed, obvious hand feeling, complete height and specifications, etc., such as video and audio products, digital products, remote controls, communication products, household appliances, security products, playing equipment, computer products, fitness devices, medical devices, banknote pen, laser pen keys, etc.



The first is the pin base material. The pin base material of the 4 * 4 light touch switch is brass or phosphor copper (low-level iron). In order to reduce the touch resistance, the pin is basically silver plated, so that the silver can understand the oxidation of SO2 gas in the air, which directly affects the solderability and touch resistance of the switch. Therefore, the high-quality 4 * 4 light touch switch should first be controlled in terms of the silver plating thickness and silver plating process of the base material of the pin. The key influencing factor of conduction reliability is the structure of the touch point. Since the function of the 4 * 4 light touch switch is to touch the touch point and shrapnel for conduction, the larger the touch surface of the touch point, the better. The touch surface is determined by the structure. There are probably three types of structures in the mall. The order of quality is as follows: large bubble (crater type), "o-touch", slotted "2-point touch" and flat bubble "1-point touch". The life and feel are determined by the stroke of the 4 * 4 light touch switch and the shrapnel. The shorter the stroke, the lighter the sound, the longer the life, and vice versa. In the case of fixed shrapnel technology, it mainly depends on the stroke or sound to determine the life of the 4 * 4 light touch switch; In addition, the key factor to determine the life of shrapnel is stamping technology.



How to operate the internal structure of 4 * 4 touch switch circuit



However, the 4 * 4 light touch switch also has its shortcomings. Frequent pressing will make the metal shrapnel tired, lose elasticity and fail. Therefore, the buttons of most electrical appliances are directly replaced by conductive rubber or pot switch hardware shrapnel, such as computer keyboard, remote control, etc. A good 4 * 4 touch switch is also very important for the longevity of the whole product. For example, computer keyboard, remote control and so on. If it is a defective 4 * 4 touch switch, it will make the metal shrapnel tired, lose elasticity and fail after frequent pressing. Therefore, the selection of 4 * 4 light touch switch is appropriate and important. The key factors affecting the quality of 4 * 4 light touch switch are the protection, weldability, conduction reliability, service life, hand feeling, production technology and installation size of 4 * 4 light touch switch. With accessories, the final impact on the quality is the assembly process. The assembly process depends on the management ability of the production company, the quality meaning of employees and the ability of quality assurance. The final production and quality can be determined by different guarantees. Now there are people and machines in the assembly method of shopping malls. Due to the improvement of automation ability, each has its own advantages and disadvantages: the cost of machine assembly is low, but the production and quality is low, The cost of manual assembly is high, but the quality is also high.