What problems should be paid attention to when using micro touch switch?
来源:Dongguan Yanghan Industrial Co., Ltd. 时间:2020-11-27
Micro touch switch is widely used, so we should pay attention to the use of micro touch switch: please do not store it in high temperature, high humidity environment or direct sunlight, and corrosive gas environment
Method 1. Dust Countermeasures
Therefore, there is no sealed structure switch, so please do not use it in places with dust. When it has to be used, we should consider the protection measures such as cover.
Method 2. Preservation
In order to avoid discoloration of the terminal, please do not store it in high temperature, high humidity environment or places with direct sunlight or corrosive gas.
Method 3. Operation method
Do not apply force to repeat operation. If the plunger is pressed further, the excessive load may lead to the deformation of the tension spring of the circular panel, which may be the cause of the poor action. Especially, if too much load is applied to the transverse pressure type, the riveting part will be damaged, which will be the cause of switch damage. Therefore, when touching the switch lightly, please pay attention not to add more than excessive load. Please set the switch in the direction that the plunger can move in the straight direction. Pressing only one side of the plunger, or an oblique operating port, may result in reduced durability.
The key also has to consider the product shrapnel, product technology, first, for the pin substrate, touch switch pin substrate for brass or phosphor copper (low-level for iron), in order to reduce the touch resistance, the pin is basically silver plated, for silver in the air to understand the oxidation, directly affect the solderability and touch resistance of the switch, so high-quality light touch switch should be in the lead The silver plating thickness and silver plating process are well controlled. The order of silver plating on the market is as follows:
Silver plating thickness: above 0.3um (thick silver), 0.2um (thin silver), 0.1um (white plating);
Silver plating process: nickel plating and silver plating on the substrate, copper plating and silver plating on the substrate, and direct silver plating on the substrate;
Whether the base material silver plating has protective agent treatment or whether the switch has dust-proof and waterproof function is very important, otherwise even if the silver plating treatment is very good, the switch will also be oxidized.
Secondly, the key influencing factor of conduction reliability is the structure of touch point, because the function of touch switch is touch point and shrapnel to conduct touch conduction, the larger the touch surface of touch point is, the better. The touch surface is selected by structure. There are three kinds of structures in the market, which are good or bad as follows: big bubble (crater type) "O-type touch", slotted type "2-point touch", flat bubble type "1-point touch" ”。
Because of its small size, long life, light touch and other benefits, micro touch switch has been widely used in many fields such as household appliances. With the continuous improvement of people's living standards, the replacement of these household appliances is faster and faster, and the demand for them will be more and more large. This is also the great potential direction for us to look forward to its development prospects.
