Lightly touch the switch button switch 2x4 micro switch side press switch. Lightly touch the switch is an electronic switch that can be turned on by lightly pressing the switch button. When the hand is released, the switch will be turned off. Its internal structure is achieved by the force of metal springs, which has been the fastest growing market demand and the most widely used product in the past decade. In the development of color televisions, video recorders, and combination audio systems, their internal structures rely on metal shrapnel to achieve on-off. Because of the small contact resistance, clear touch and complete height specifications, the light touch switch can be used in household refrigerators, audio and video products, digital products, remote controls, communication products, household appliances, security products, toys, computer products, fitness equipment, medical equipment, currency verification pens, laser pen keys, etc. But there are also shortcomings in lightly touching the switch, as frequent pressing can cause the metal spring to fatigue and lose its elasticity, leading to failure. Therefore, the buttons of most electrical appliances are directly replaced by conductive rubber or metal spring pieces of pan switches, such as Computer keyboard, remote control and other factors that affect the quality of touch switches. The key lies in the protection, solderability, continuity reliability, life, hand feel, production process and installation size of light touch switches, The base material for the pins of the light touch switch is brass or phosphor copper (low-grade ones are iron). To reduce contact resistance, the pins are basically silver plated, as silver will oxidize when it encounters SO2 gas in the air, directly affecting the solderability and contact resistance of the switch. Therefore, for high-quality light touch switches, the first step is to control the silver plating thickness and silver plating process of the base material of the pins, The order of advantages and disadvantages of silver plating in the market is as follows: silver plating thickness: 0.3um or above (after silver), 0.2um (thin silver), 0.1um (white) Silver plating process: substrate pre nickel plating and silver plating, substrate pre copper plating and silver plating, substrate direct silver plating. Whether the substrate is treated with protective agents after silver plating or whether the switch has dustproof and waterproof functions is crucial, otherwise even with the best silver plating treatment, the switch will be oxidized.

Secondly, the key factor affecting the reliability of conduction is the structure of the contact point, because the function of a light touch switch is to conduct contact between the contact point and the spring piece. The larger the contact surface of the contact point, the better. The contact surface is determined by the structure. There are approximately three types of structures on the market, and the order of advantages and disadvantages is as follows:

The lifespan and tactile feel of the "O contact", slotted "2 point contact", and flat bubble "1 point contact" of the large bubble (crater type) are determined by the combination of the stroke of the light touch switch and the spring piece. The shorter the stroke, the lighter the sound, and the longer the lifespan. The longer the stroke, the opposite is true. Under fixed spring piece process conditions, the lifespan of the light touch switch is mainly determined by the stroke or sound;

In addition, the key factor determining the lifespan of the shrapnel is still stamping technology. Previously, stamping technology from Japan and Taiwan was already quite popular in China. Therefore, with the improvement of technology, should the requirements for imported materials be further reduced? For example, there are four main types of 160gf shrapnel lifespan in the market

About 50000 times (domestic phosphorous copper or relatively backward stamping technology), about 100000 times, and over 200000 times (stainless steel)

The production process, with the availability of accessories, ultimately affects the quality of the assembly process. The assembly process depends on factors such as the management ability of the production company, employee quality awareness, and quality assurance ability. The final product quality produced by different assurance abilities is definitely different. Currently, there are manual and machine assembly methods in the market, and due to the further improvement of automation capabilities, each has its own advantages and disadvantages: machine assembly costs are low, but product quality is low, The cost of manual assembly is high, but the quality is also high.

The method and items of factory inspection also affect the quality of the final touch switch, such as whether the appearance, feel, conductivity, resistance, and other items are spot checked or fully inspected. For example, if some large factories require a scrap rate measured by PPM or zero defects, they need to set up spot checks or quality audits after setting up a full inspection in the factory inspection.