What is the principle of membrane switch
Membrane switch is a certain flexibility of the insulating material layer composed of a multi-layer structure (plane) type (non-locking) key switch, integrated circuit. Keys, indicating elements, instrument panels and other functions as a whole. Membrane switch action only by the vertical direction of the elastic film bouncing to achieve, the elastic film, although after millions of times of creep, and creep when the amplitude is very small, only 0.1-0.3MM, coupled with the reasonableness of the choice of materials, so the film material can withstand a million times more than a large life without deformation, these are the durability of the decision of the membrane switch.
What is the principle of membrane switch
Membrane switch has a beautiful appearance, long service life, simple structure, easy to install, the use of good feel, occupies an area of smaller and other characteristics, and is widely used in all walks of life, from small household appliances to high-tech products, and slowly replaced some of the light touch switch market, in the market occupies a great share and advantage.
Membrane switches are classified according to their structure
1, flat non-tactile
Long service life, but no touch;
2, film convex tactile
Good tactile, but the service life is relatively short;
3, convex bezel non-tactile
Beautiful appearance, strong three-dimensional, but no touch;
No touch;
Touch;
All the other features of the membrane switches, such as the touch switch, are widely used in various industries. Touch;
4, convex frame touch type
beautiful appearance, a strong sense of three-dimensionality, and have a sense of touch;
5, the face of the plate to play convex touch type
(a) type: when the design is not appropriate, easy to have the phenomenon of the two segments, but the face of the plate is damaged, the electrical performance also exists;
(b) type: there is no phenomenon of the two segments and the structure of the layer is less, more economical, if the plate is damaged, the electrical performance also exist;
(b) type: there is no phenomenon of the two segments, and less structural layer, more economical.
6, metal shrapnel type
(a) type: the most basic and most commonly used structure. Shrapnel both play a tactile role and the role of the upper line;
(b) type: complex structure, used for more dense shrapnel and do not have to jump the line of the occasion. Shrapnel placed on the upper line, the upper and lower lines of the conductive surface are up, the upper line needs to be punched. This structure of the four feet and the center of the shrapnel conductive point is not in the same plane, there are "two sections" of the situation. At the same time, the shrapnel is often in the excessive anti-concave state, over time, the shrapnel will not rebound phenomenon, is not recommended;
(c) type: the shrapnel is placed in the upper line, only to play a tactile role, the conductive side of its upper line down, the conductive side of the lower line up, there are "two segments" of the situation, is not recommended;
(d) type: shrapnel placed in the lower line, the upper and lower lines are aligned, the shrapnel both play a tactile role and play a role in the upper and lower lines are connected; used for more shrapnel, denser and do not have a jumper occasions, simpler than the structure of the (b) type. Designed to pay attention to line alignment to avoid the four legs of the shrapnel to ensure that there is no short circuit.
7, light-emitting body type: be sure to open the bottom rubber mold
(a) LED lines and the lower line of the same layer: the structure is simple, but if the selected LED lamp height is high, the LED lamp will be topped panel, at this time the panel should be LED window to do convex processing, or thicken the thickness of the surface adhesive layer, so that its thickness is greater than the thickness of the LED lamp;
(b) LED Line and the lower line of different layers: complex structure, but the LED window does not have to be convex, but must be hollowed out in the area above the LED lights, to prevent the light can not pass through the LED light holes. Note: At this time, the lower line alignment needs to be avoided around the LED light hole alignment.
8, folded
This type can be avoided to avoid jumping lines and do not need to make the conductive surface can be down the hole, the disadvantage of this structure in the folded easily line is easy to break.
9, inside and outside the frame of the waterproof type
Outside the frame is a closed frame, there is no line, the inner frame to play a protective role in preventing moisture from the line notch into the chassis.
Membrane switch structure is rigorous, beautiful appearance, good sealing. With moisture-proof, long service life and other characteristics. Widely used in electronic communications, electronic measurement instruments, industrial control, medical equipment, automotive industry, intelligent toys, household appliances and other fields. On what is the principle of membrane switch for you to organize and membrane switch according to the structure of the classification of the relevant content, I hope the content of the article can help you.