How to weld the four-foot touch switch of the key switch manufacturer?

　Key switch manufacturersThe four-pin switch is a kind of touch switch common to key switch manufacturers. This touch switch looks like a four-pin switch. There's only one power switch in the concrete. Generally speaking, there is a power switch around, the top and bottom are direct, just solder on the circuit board, and the top fillet is welded. Only two feet. Through the chip-style four-foot touch switch, the direction of the solder hole and the behavior of the main body are perpendicular to the surface of the circuit board, so that the automation of the convenient equipment can be used. The position of the welding hole is parallel to the main body of the software four-pin tap switch. This type of welding hole must be located on the printed circuit board behind the welding, so that the integration of components and printed circuit board will be stronger.

In fact, we only have such a pair of contacts for the general four-corner button control power switch. Its feet are flat metal sheets, the adjacent feet are a pair, and the adjacent feet opposite the door are matched with each other here. In the case of welding, carefully contrast the power circuit, very easy to distinguish.

Key switch manufacturers through the study in the terminal welding process, touch switch terminal load is released, due to the different requirements of the standard will lead to electrical characteristics of loose, deformation and deterioration, please pay attention to the use. When applying buried-hole printed circuit boards and circuit boards that strongly recommend information technology, because the harm to our welding structure stress will cause changes in the economic development environment, please provide sufficient determination in advance on welding quality management standards through research.

Hand welding temperature is controlled at 200 ℃, welding time is about 10 seconds 2. Wave welding: temperature is controlled at 130 ℃, welding time is about 2 seconds, including manual adjustment of welding, welding frequency should be the following 2. At this time, the first and second work should be separated within five minutes. Wait until it returns to room temperature. Characteristic damage is caused if continuous heating causes deformation of the outer corridor of the wheel.

　Key switch manufacturersThe advantages of this processing technology are that the temperature is easy to control, air oxidation can be prevented during the entire welding process, and the manufacturing cost is easier to control. If the raw materials around the entire equipment using the power switch produce corrosive steam, which may cause poor contact, please make a full judgment in advance.

　　Key switch manufacturersThe touch switch can change the state of the switch contact without much force contact, so the contact capacity is very small and the structure is simple. After the switch force is removed, it can only maintain the original state, that is to say, it is quite a single-contact button switch that can be pressed with very little force without locking. At present, thin film switches and small micro switches can be regarded as touch switches, in the structure, conductive lines are mostly printed on two mutually insulated films, and the lines are connected to each other by pressing. Or a butterfly-shaped shrapnel made of thin elastic metal is used to press the shrapnel to connect the printed circuit.