The principle of the use of the finger spring
Spring-built capacitive inductors Electro-capacitive sensing is a robust alternative to traditional mechanical switches. Some uses cannot place the printed circuit board directly under the overlay or attach the printed circuit board to the device housing. Such uses include household appliances such as stoves, washing machines, refrigerators, and microwave ovens, as well as various vehicle electronics such as radios, TV tuners, control panels, and occupant detection systems in seats.
Metal Spring Sensors - Can be used instead of solid-state conductivity sensors so that the PCB can be oriented away from the overlay and can provide reliable sensor connection under operating conditions with strong vibration or sharp temperature changes. In addition, springs can be used for backlighting, fusing mechanical and capacitive buttons, among other functions.
Product material
Carbon steel wire, low carbon steel wire, high carbon steel, manganese steel wire, nickel wire, 60SizMNA, stainless steel wire for spring and other materials.
Outer surface plating
Eco-friendly nickel, nickel-plated nickel-free white K, straight gold, bottom gold, silver, bronze, ancient silver, etc.
Selection specifications
Contact button products provide the following parameters: A. Diameter of round hardware contacts. B. Spring wire diameter . C, spring height . D. Number of spring turns. E. Spring outer diameter . F. If it is a hollow contact button, the inner circle diameter needs to be supplied.
Scope of application
It is suitable for induction cooker, light wave stove, electric cake pan, disinfection cabinet, range hood, water heater, fan fan, vegetable washing machine, money counting machine, massager, electric oven, electronic wine cabinet, water dispenser and a series of intelligent contact small household appliances.
Precautions
Spring products are commonly used hardware parts in major occupations, and are not equal to [screws, nuts] standard parts; Screws and nuts are sold in all hardware stores, but there are few springs, such as two manufacturers, the appearance of the product is almost the same, but the required spring size, tightening elasticity, tension, torque is completely different. So springs don't have to do a lot of inventory.