ZhiJian Hardware

Dome slices (because it looks like a demolded pot, also known as metal shrapnel or metal dome, snap dome), choose thin (0.05mm-0.1mm thickness) and super hard (general strength is the middle of HV480-550) made of stainless steel sheet). Dome chips are mainly used in membrane keys, key switches, operation panels, nameplates, controllers, instrumentation equipment, small power switches, PCB boards, printed circuit boards, forced boards and other products, as well as on mobile phones, wireless walkie-talkies , wireless phone, MP3, MP4, iPhone, PAD, etc., with several advantages such as stable touch, strong basic law of guiding, stable rebound force, and outstanding touch.

Due to its excellent on-off characteristics, the dome can have excellent power switch on and control functions between the operator and the product. The key is to rely on the basic law of dome chips to have a good on-off, high-quality tactile power switch between the operator and the product. At the same time, using the stable resilience of the dome (automatic return after pressing down) and long service life, it can give the operator high-quality tactile feedback, which is one of the most popular electronic device switch cabinets. essential part. Secondly, the stable resilience of the dome slices (automatic return after pressing and holding) can give the operator a comfortable impression. In addition, the dome sheet has a long service life of 100,000 touches, which provides the most specific quality support point for the main product. According to the requirements of different product structures and grades, the dome can be subjected to various surface treatments such as nickel plating, gold plating, and gold plating.

Generally, the basic dome is divided into: annular dome (waist circle/oval), cross-shaped dome, triangular dome, square dome, diameter from 3mm to 20mm, range From 100g to 600gf, even 6,000gf (triangular shrapnel can only be done with some unique diameters/materials, very rarely used).

In addition, it is possible to press multiple dome pieces according to a certain position, and apply glued PET to fit them together, which is convenient and quick to assemble and accurately locate. General board, according to the matching PAD (solder layer) part of the pcb circuit board to allocate each metal material shrapnel / dome part, and other electronic devices to set the matching avoidance position and precise positioning hole, etc. . This kind of product is called the conductive film of the dome sheet, or the electric film of the metal material shrapnel, and the Dome sheet. Sometimes, people often say that the dumplings also refer to this product. It is a piece of PET sheet including metal material shrapnel (dome), used as a power switch on PCB or FPC and other pcb circuit boards, and has a key feel-type power switch between users and equipment. . Compared with traditional silicone keys, plastic film keys have stronger tactile sensation, longer service life, and can indirectly improve the productivity of various types of power switches using conductive films.