The light touch button switch is a small and very sensitive spring-driven magnetic absorption type travel switch. The light touch switch has a small contact interval and a snap-action mechanism, which uses a prescribed stroke and prescribed force to perform switching actions. The contact mechanism is a kind of switch covered with a shell and a drive rod outside. Because the contact distance of the switch is relatively small, it is called a light touch switch, also called a sensitive switch. The electrical text symbol is: SM
The external mechanical force acts on the action reed through the transmission element (press pin, button, lever, roller, etc.). When the action reed is displaced to the critical point, an instantaneous action is generated, so that the moving contact at the end of the action reed is in contact with the fixed contact Tap to quickly turn on or off.
When the force on the transmission element is removed, the action reed produces a reverse action force. When the reverse stroke of the transmission element reaches the critical point of the action of the reed, the reverse action is instantaneously completed, and the contact distance of the touch switch is small. The action stroke is short, the pressing power is small, and the on-off is rapid. The action speed of the moving contact has nothing to do with the action speed of the transmission element.
The light-touch button switch has a small contact interval and a snap-action mechanism. The contact mechanism for switching action with a prescribed stroke and force is covered by a shell. There is an actuator on the outside and a small-sized light-touch switch. The figure below shows a typical light-touch switch. An example of the structure of a tact switch, a tact switch is composed of five major types of constituent elements.
The touch button switch is used in many aspects, such as computer mouse, car mouse, automotive electronics, communication equipment, military products, testing equipment, gas water heater, gas stove, small household appliances, microwave oven, rice cooker, floating ball equipment supporting, medical treatment Equipment, building automation, power tools and general electrical and radio equipment, 24-hour timers, etc.
Anyone who knows tact switches knows that there are many types of switches on the market, such as ordinary switches that we often see, and professional switches that we don’t often come into contact with. These different types of switches have different functions. Basically, these different types of switches have different shapes. We can clearly judge the style of the switch from the shape. When buying, we can also judge the shape according to the shape. The touch switch is currently the most used by people. This Tact switches are not the same as general switches, because there are so many types, and their specifications and sizes are very different. It is difficult for us to judge its function from the appearance, so we often get confused when we understand this kind of tact switches.
The patch tact switch is one of them. Now the application range of the patch tact switch has become wider and wider. This kind of tact switch is used in many devices, which also confirms its diversification. Sex, when we buy a patch tact switch, we should know the good and bad of the tact switch. There are good quality and poor quality. If we accidentally buy a poor quality tact switch What to do, let's take a look at this problem together.
In fact, it is not difficult to purchase a good tact switch. The key is to see how you choose. As long as you know the correct purchase method, you can buy a tact switch that suits your wishes. In fact, buying a patch tact switch is There are some methods. The first one is to look at its quality. A good quality tact switch is completely different from a general tact switch, because its materials are very delicate and there will not be any roughness. Because it is precisely processed, the produced switch is very beautiful, and the various parts of the switch are also very good. This kind of switch is definitely worthy of people to use. The patch touch switch is supplied.
The second thing is to look at the feel of the tact switch. A good tact switch must have a good feel. When choosing, we can pick it up and compare these different types of tact switches to see what their touch is. The switch is different. If you understand these different places, then you will know where the good touch switch feels better. It may be because the parts are relatively advanced, or it may be because the production process is very advanced, so production The touch switch that comes out is very easy to use, and such a touch switch is also very attractive.
The third method is to understand its size. Generally speaking, large tact switches have a relatively low service life because of their high degree of wear and tear, and they are easily worn out, while small tact switches are relatively small because of their small size. It is not easy to cause problems during use, and it is not easy to cause too much wear, so it can be used for a long time. If you are familiar with tact switches, you must know its pins. Every tact switch has The pins, but their pins are not the same. They are basically made of different materials. The best material is brass. This material is not easy to volatilize and can also reduce the contact resistance, so it is very safe. The copper tact switch is also very good. This tact switch is very similar to the ones we have come into contact with. It is also used the most. The worst is iron, because iron is the easiest to volatilize and is easy to oxidize. , So everyone try not to buy tact switches with iron pins.