The oblong metal dome is a regular rectangular shape with a large surface area. On the one hand, it increases the contact area with other components, improves the conductivity and stability of signal transmission; on the other hand, it also provides better conditions for heat dissipation, helps to reduce the temperature of electronic equipment during operation, and improves the reliability and life of the equipment.
What are metal domes?
A metal dome is a thin sheet element made of metal materials (such as stainless steel, beryllium copper, spring steel, brass, etc.) with elasticity and conductivity. It usually has a specific shape and size, can be deformed when subjected to external force, and quickly returns to its original shape after the external force is removed.
Metal domes are mainly used in membrane switches, contact switches, PCB boards, FPC boards, medical devices and other products. It plays a high-quality switch role between the operator and the product through its elasticity and conductivity, and provides the operator with high-quality tactile feedback by using its stable rebound force and ultra-long life.
What are the different metal dome shapes?
The main shapes of metal domes include round, cross, triangle and ellipse. These shapes of metal domes range in diameter from 3mm to 20mm, and can be made according to customer drawings or requirements.
Circular metal domes are the most common shape and are widely used in various electronic devices. Cross-shaped metal domes are usually used in applications that require a larger contact area. Triangular metal domes are suitable for designs that require special mechanical properties. Elliptical metal domes are used in some special-shaped switch designs.
In addition, metal domes can also be divided into different types such as gold plating, nickel plating, and silver plating according to surface electroplating treatment to meet different electrical and mechanical performance requirements.
What is an ellipse shape dome?
Ellipse dome is a metal dome, also known as an ellipse pot or an ellipse metal dome. It is made of ultra-thin and ultra-thick stainless steel materials and is mainly used in products such as membrane switches, contact switches, PCB boards, FPC boards, and medical devices.
The working principle of ellipse dome is similar to that of metal domes of other shapes. When pressed, the center point of the shrapnel is concave and contacts the circuit on the PCB, thus forming a loop, and the current passes through, so that the product can work normally.
The main application areas of the elliptical shrapnel include the key switches of mobile phones, remote controls, toys, headphones and other products. It has a stable resistance value and a low resistance value, and can provide good conductivity and operating feel.
What is an oblong metal dome?
The oblong metal dome is in the shape of a oblong.
First of all, the rectangular design gives it a great advantage in space utilization. With the trend of increasing miniaturization and integration of electronic equipment, the oblong metal dome can better adapt to the limited space and provide more possibilities for the layout of electronic components.
Secondly, the oblong metal dome usually has a large surface area. This not only increases the contact area with other components, improves the conductivity and stability of signal transmission, but also provides better conditions for heat dissipation.
In addition, the edges of the oblong metal dome are usually more regular, which helps to improve the accuracy and stability of its installation. In the automated production process, the regular edges can better cooperate with the production equipment to achieve efficient and accurate installation.
How does metal dome work?
The working principle of metal dome is realized through its elasticity and conductivity. When the metal dome is pressed, its center point will be concave and contact the circuit on the PCB board, thus forming a loop, allowing current to pass through and making the product work normally.
The main characteristics of metal dome include high elasticity, excellent conductivity, low contact resistance, corrosion resistance, strong wear resistance, high precision and good stability. These characteristics enable the metal dome to deform when subjected to external force and quickly return to its original shape after the external force is removed, while ensuring good conduction of the circuit and reducing signal loss and energy loss.
How are oblong metal dome made?
Oblong metal domes are usually made of metal materials with good elasticity and conductivity, such as stainless steel, copper, beryllium copper, etc. These materials have high strength and elastic modulus, can be elastically deformed when subjected to external force, and quickly return to their original shape after the external force disappears.
The processes for manufacturing oblong metal domes mainly include stamping, etching and electroplating. Stamping is to stamp a metal sheet into the required rectangular shape through a die. This process has the advantages of high production efficiency and low cost. Etching is to process a metal sheet into a specific shape by chemical corrosion, which is suitable for manufacturing high-precision and complex-shaped shrapnel. Electroplating is to plate a layer of metal with good conductivity, such as gold, silver, tin, etc., on the surface of the shrapnel to improve the conductivity and corrosion resistance of the shrapnel.
How does the oblong metal dome work?
The working principle of the oblong metal dome is based on its elastic deformation characteristics. When an external force acts on the shrapnel, the shrapnel will deform elastically, thereby contacting or separating from other components to achieve circuit on-off control. This simple and reliable working principle makes the oblong metal dome widely used in electronic devices.
In the field of consumer electronics, oblong metal dome is widely used in key switches of mobile phones, tablets, laptops and other devices. Its good hand feedback and reliable performance provide users with a comfortable operating experience. In addition, oblong metal dome also plays an important role in remote controls, game controllers and other devices.
In the field of automotive electronics, oblong metal dome is used in switches and sensors in car dashboards, central control panels, seat adjustments and other parts. Its high reliability and resistance to harsh environments can meet the strict requirements of automotive electronic equipment.
In the field of industrial control, oblong metal dome is used in control panels of various instruments and automation equipment. Its stable performance and long life provide reliable guarantee for industrial production.
In short, as an important component in the field of electronics, oblong metal dome has made important contributions to the development of electronic equipment with its unique shape, excellent performance and wide application.
