What are the main applications of different models of tactile dome switches?

What are the main applications of different models of tactile dome switches?

As a manufacturer, especially in the early stage of engineering, how to choose a high-quality tactile dome is a big problem encountered in engineering design, because it is difficult to easily distinguish its applicability and material from the appearance of the tactile dome, especially if it is not used The case for passing the tactile dome project is even more uncertain, so how to choose a high-quality and suitable tactile dome? Below, Qingdao Shanyo has more than 20 years of experience in the industry and will give you basic knowledge: “How or how to choose a tactile dome?”

Custom Tactile Dome

To put it simply, in terms of shape: the main shapes of tactile domes are divided into the following types:

• Circle Metal Dome (smaller stroke);
• Cross-shaped tactile dome (maximum travel);
• Triangle Metal Dome (with feet is also a commonly used button);
• Oblong Metal Dome (relatively space-saving);
• Tactile domes of various shapes can be customized according to needs. In addition, special-shaped domes can also be customized.

Advantages and disadvantages of each type of tactile dome:

Four-legged tactile dome

From a structural point of view, the height of the four-legged dome is often higher than that of the other three dome, so the sense of click is also better. The four-legged dome is now mainly concentrated on relatively large domes of 5 mm to 20 mm, which is also one of its advantages. This kind of shrapnel has a greater sense of click and a longer life span, so it is also called a membrane switch dome, and it is most commonly used in membrane switches.

Circle Tactile Dome

It is a dome button with a relatively small stroke. It feels better and does not make a clear sound. Round dome sheets are generally used with double-layer dome sheet stickers. There are several types of tactile dome. The life of a round tactile dome will be longer; the shape characteristics are also better compatible with double-layer stickers, which can save excess more effectively. Taking up irreplaceable space.

Triangle Metal Dome

Generally there is only one contact in the middle and one contact on each of the three sides. The purpose is to better contact the PCB gold finger. The conductivity is better but the life span is shorter than the corners. The triangular metal dome is divided into Available with or without feet. Triangular metal dome with legs are generally used on products with PCB boards. Metal dome without legs can be used in various products with double-layer stickers. Used in conjunction with double-layer stickers, they can greatly improve the feel.

Oblong Metal Dome

Generally used on products with a single button or products with each button separated. It is generally used on products with a relatively small area and compact wiring. It is often used in softboard PCBs. It occupies a relatively small space and has a relatively long life. high;

Cross-shaped Metal Dome

The cross-shaped snap dome has a relatively large stroke, relatively heavy strength, and a short life at high strength. Customers often use gold-plated metal dome, which has low resistance and strong conductivity, and has a clear sound when operating. Can be used with stickers on products. The usage intensity is generally higher than other types of metal dome, and the stroke is also larger than other metal domes. It is mainly used in access control equipment and intercom building systems.

The shaped metal dome will have 8.5*8.5 welded pads with holes in the middle and are often used in car steering wheels.