Touch switch is a very common electronic switch in our daily life. I believe its principle, common specifications, circuit, scope of use and other information should not be introduced. We have explained a lot and explained a lot. Now that I will write another article today, there are new discoveries. Some common problems about touch switch are all problems raised by customers in business communication and problems found in our R & D and production process, and solutions are obtained. Then I will tell you and popularize knowledge to you. Our middleman is blessed. Please praise it quickly!

 

The action type of light touch switch is light touch return. The normal button strength is 160gf and 250gf, and its return force is 50gf. As mentioned above, the normal button strength is 160 and 250, which is what we will focus on today. In order to save costs, many manufacturers in the market use domestic shrapnel made in Jiangsu and Zhejiang, and then claim to be Korean shrapnel. As an old salesman, I have never heard of any ox fork manufacturers in South Korea that produce light touch and light touch shrapnel. Of course, as a business and factory, it is understandable to boast properly, that is, because of the use of domestic shrapnel, its strength and hand feel can not be controlled The system is very precise. The normal values are 160 ± 50gf and 250gf ± 50gf. I am surprised to see this data, but it doesn't matter. The positive and negative tolerances of pinzan are all within ± 30gf.

 

According to what I said above, do you find any problems? Some professional purchasers will ask what kind of shrapnel are you using? Yes, what kind of shrapnel material is the best one to touch the switch? In order to pull orders and save costs, many people use phosphor copper shrapnel. One of the advantages of phosphor copper shrapnel is that the service life can reach the standard, and a better advantage is that it is cheap, and the disadvantage is that the positive and negative tolerance range is large. Pinzan uses three-dimensional shrapnel imported from Japan. The material of shrapnel is stainless steel. The toughness of stainless steel is very good. Its characteristics are high service life, good handle and high cost. It is very difficult for manufacturers to choose between the two. I believe many people will be troubled by this. However, we do quality work, and more factors of cost should be left to customers to consider.

 

We have laid out so much knowledge in front of us. Now we are going to focus on it. Many customers find that the handle of the touch switch is not good after using it. For example, we have 10 touch switches, and I press each switch. After pressing, we will find that the handle of each switch is not the same. It's like a roller coaster. If your product is a single dosage, you can't find this problem, and you don't have to think about the customer's reaction Because there is no problem with the function. However, if there are many touch buttons on your control panel, your problem will come. As a design engineer, it is better to consider and avoid this problem. As a light touch switch manufacturer, how do we ensure the consistency of touch switch handle? First of all, we need to analyze the cause of this. We said that the shrapnel has two kinds of materials. The phosphor copper shrapnel will have attenuation after high temperature. The positive and negative tolerance is ± 50gf. After the furnace is finished, it will become lighter, that is, it will decay. For example, the 160gf switch is in line with the range of 110gf, but after the furnace, its hand feel is only 100gf, which is the lower limit. What if the upper limit is 200gf? Then the switch you press will have the feeling force of 100gf and 200gf, which is the same as the roller coaster we mentioned before. If the imported stainless steel shrapnel is used, it will not decay and will keep good consistency. Take 160gf, the upper limit is 190gf, and the lower limit is 130gf. If it is in this range, we normal people can not feel its change.