Waterproof Membrane Switch

Waterproof Membrane Switches Type

Flexible Membrane Switch 

The flexible membrane switch is a typical form of membrane switch. Such a membrane switch is called flexible because the mask layer, the isolating layer and the circuit layer of the membrane switch are all composed of software films of various properties. 

The circuit layer of the flexible membrane switch adopts the polyester film (PET) with good electrical function as the carrier of the switch circuit pattern. And this layer also divides the handle elastic piece and the upper and lower circuit. Because of the properties of the polyester film, the membrane switch has good insulation, heat resistance, folding resistance and high resilience. 

The pattern of the switching circuit, including the connection of the switch and its lead-out line, is printed with a low-resistance, conductive coating cured under low temperature conditions. Therefore, the composition of the entire membrane switch has a certain degree of flexibility. And is not only suitable for use on a planar body, but also can be matched with a curved body. 

The flexible membrane switch lead-out wire is integrated with the switch body itself. When the group switch is made in series, it is collected at a certain position of the film. And extends outward according to the specified position and scale of the design. As a soft The arbitrarily bent, sealed lead wire is connected to the rear circuit of the whole machine. 

Hard Membrane Switch 

The hard membrane switch means that the pattern and wiring of the switch are made on a common printed circuit copper clad laminate. The characteristics of the rigid membrane switch are that the material is easy to handle. The process is not disordered, the resistance is low, and some components in the circuit can be directly soldered on the back side. 

In the case of a small area, the hard lining layer can be omitted. Hard membrane switches generally use metal guides as the conduction labyrinth contacts, so a better feel. 

The unfavorable aspect is that it is not convenient to install the soft film switch in the whole machine. And it is often necessary to solder the insert and lead the lead through the flat cable. Information feedback of the rigid membrane switch In addition to the buzzer signal and LED indication. Metal feel shrapnel is generally used. 

Flat Membrane Switch The button on the membrane switch, which indicates the position, shape and size of the key body in different colors, is more common in the initial stage of the membrane switch. 

Stereo membrane switch: Usually, the buttons on the membrane switch only use color to express the position, shape and size of the key body. In this way, the correctness of the manipulation can only be recognized by the operator's vision. Because there is no suitable feedback information indicating whether the finger is pressed in the effective range of the switch. Thereby affecting the confidence and manipulation speed of the whole machine monitoring. 

A membrane switch that makes the pivoting body slightly protrude. Slightly higher than the panel, and constitutes a three-dimensional shape, is called a stereo key switch. 

The stereo key not only correctly gives the range of the key body. But also improves the recognition speed, makes the touch of the operator more sensitive. And also enhances the decorative effect of the appearance of the product. 

The production of the stereo key must be done in the design stage of the panel. The paving provide with process holes for precise positioning when the mold is pressed. And the height of the three-dimensional protrusion is generally not more than twice the thickness of the substrate. 

For the appearance of an aesthetic product, there are many variations in highlighting the protrusion of the membrane switch.