Quality Discrimination and Wiring Method of Light Touch Key Switch
Release time：2019-04-12 Clicks： Click
The method of quality identification and wiring of touch button switch is introduced to you. We should pay attention to these problems when purchasing. The details are introduced below.
1. Appearance is divided into outer frame, inner frame and functional parts. The inner and outer frames of good touch button switches are made of PC. PC material is known as polycarbonate, commonly known as bullet-proof glue. It has the characteristics of flame retardant, anti-distortion, impact resistance, non-easy dyeing and external lubrication. Usually, you can see that some of the outstanding parts behind the switch are functional parts. If it is white 8 Chengdu, they are made of PC. If it's black, we should pay attention to ask the purchasing guide. Because the PC material is white, of course, we don't clean it with black yeast.
2. Then the functional parts inside need to be turned over before we can see. I probably said that I don't understand and have no connection. After turning over the functional parts, there is something like a seesaw inside. Let's call him a seesaw. Usually the good switches are non-sliding ones, and the bad ones are sliding ones. There is a silver-white contact at the end of the seesaw. The light touch of the key switch is to turn off the current by him. Good switch contacts are all silver alloys, some are silver-nickel alloys, some are silver-chromium alloys, whatever the alloy, the intention is to enhance the hardness of silver, increase its melting point to avoid melting silver when the current is too high; and the warping plate is a current-carrying device, which is used to carry current, its raw material is tin-phosphorus bronze, you can also ask the shop assistant, if he wants to say brass, do not buy it, this. Some of them can't be seen when you buy because of the layout inside, so I'll probably say that you can do it by asking the clerk.
3. If the hole of the button switch is lightly touched from the outside, if there is something black or white to hide the copper sheet inside, then it proves that there is a maintenance door layout. It can take a hairpin or hard thing to poke at the single hole, and it can not prove that there is a self-locking device. It is a good socket. If there is no maintenance door, it must not be bought. The so-called maintenance door of miscellaneous brands is plastic, and high-quality products. All of them are reinforced nylon, fire-proof and patient. There are special attention for children at home, and maintenance doors to avoid the bucket lights when children are cunning. This is very important.
4. Looking at its wiring method, the best wiring method nowadays is the fast wiring method. The card wiring method used is stripping the wire out without screw and inserting it directly into the wiring hole behind the switch. We may feel that this is nothing, not related to the user, just the electrician is convenient, but the wiring method can detect the safety of the switch. Sex, do not neglect; we can also use the general layout of double-hole pressure plate, this can be seen from the appearance, you turn the switch over, see the outstanding behind some, that is, functional parts, there are several holes behind him, you can see from the hole, if you see a screw and a small plate with two holes on one side, around the hole there are several millimeters to several millimeters of marks, It turns out that this is the layout.