Posts Tagged ‘Metal Dome’

Metal dome venting design

Wednesday, May 31st, 2017

It is very improtant is the metal dome with venting, as it will affect the click feeling.How to design the venting of metal dome? There are three ways as below:

1. Open one line venting between the two metal domes;
2. Drill a hole on the top of Mylar;
3. Design the curved venting around the metal domes.

The first of above three methods are more commonly used, it’s very convenient and quick way. If you also need to know more about the metal dome, please feel free to contact us.

How to increase the click feeling of metal dome?

Wednesday, March 29th, 2017

The click feeling of metal dome is the most improtance factor of entire product using effect, but how to increase the click feeling, let’s take a look at the following.
1, Use high height of the metal domes, such as the four-leg metal dome, the circle metal dome with side dimples, the click feeling is better than others;
2, Adjust the click feeling value of metal dome, Value = (force – reforce) / force, the higher value, the better feeling, but it generally can not exceed 70%, too high will affect the metal dome life;
3, UV Plunger Metal Dome Array design;
4, The actuators of Silicone can not make too large, too large will reduce the click feeling;
5, The assembly process, to make sure the metal domes in the center. Bcause in the middle of the dome array is the best feeling.

If you need more information about the metal dome, please contact with us.

How to design the actuators of Silicone?

Wednesday, November 2nd, 2016

As we know, the silicone with actuators always design above the metal dome. But how to design the actuators? As it will affect the click feeling of metal domes.

CMD Manufacture recommends that the bottom of silicone with flat actuators, the size should not exceed 25% of the diameter of metal dome, and it must be in the center of the metal dome.

The unreasonable design for actuators will directly affects the metal dome click feeling, and will affect the quality of end-products. So at the beginning of design, if you are not very familiar, please contact us and we will give a reasonable design.

Several factors affect the quality of the metal dome

Tuesday, July 29th, 2014

In today’s society, there are a lot of customers are not well know the metal dome,just know more cheaper more better. But this is actually one of the biggest mistakes, so we should see several factors affect the quality of the metal dome .

Metal dome is an important part used in membrane switch, PCB boards and other products, has played an important role in conducting circuit, when you press, the line will be turned on, when you release it will automatically disconnect. If the metal dome has a problem, it will affect your product, or even a brand of your company’s. So I would like to tell you to pay attention to the following items:

1, The metal domes life:

Nowadays there are a lot of metal dome life is not up to standard, four-leg only 200,000 times to 300,000 times, the price is relatively cheap, but life can be achieved in the 500,000 to 1,000,000 times we make, and round metal dome, like 4C, C5 small dome, domestic only 700,000 to 800,000 times life, the price is relatively low. Our C4, C5 can react to 1,000,000 times.

2, The metal domes force:

Metal domes force is the most stringent requirements of foreign customers, that is speaking to each metal dome force is used to be uniform, can not have one high and one low and to be controlled at a certain tolerance (±30gf).

3, The metal dome material:

There are three kinds of material: domestic materials, South Korean materials, and Janpan material.  The metal dome biggest weakness is “Dead Key”. It’s very difficult to see which better from the appearance of the materials, we onlt can find the better from the testing.

4, The metal domes appearance:

When selecting metal domes, pay attention to the appearances if have dirt, scratches, grease, crushing, etc. ……

Our company is specialized in producing metal domes, our products have more than 80% of exports to the overseas marketing, and we have also opened the domestic customers in recent years. Our four-leg metal dome, life can reach 500,000 to 1,000,000 times, especially 4C, 5C round metal dome, has a real one million times life,and the force can be controlled within (± 15gf) range.

We are according to high-quality, high-service, fast-deliverytime, and good price for our customers. CMD Manufacture Co., Ltd. is a professional production of metal domes in China! ! !