Versatility of small membrane keypads and silicone switch mats

Efficient input in small format

Article Membrane keyboards and silicone switch mats

The versatility of membrane keypads and silicone switch mats

Smart home applications and their control via smartphones offer a multitude of functions and allow the control of various devices via a single platform. This versatility is undoubtedly practical and opens up numerous application possibilities. Nevertheless, smartphones and smart applications reach their limits in certain situations, such as when the device is lost or there is no internet connection. In such cases, it has always proven its worth a proven hand-held transmitter as the ideal input solution.

Handheld transmitters are generally simple and intuitive to use. They have dedicated buttons for specific functions that are easy to locate and press. Thanks to their direct wireless connection to the receiver, they offer an instant response and enable virtually lag-free control. Furthermore, handheld transmitters are designed for specific applications to withstand daily use and harsh environments. Comparison to smartphones are hand transmitters more robust and shock-resistantThis makes them less susceptible to damage from falls or other impacts. Furthermore, no complex software programming is required.

Hand switch with membrane keypad and silicone switch mat

The applications of conventional handheld transmitters are extremely diverse. They range from car keys and remote controls in building automation to lighting controls and alarm or panic buttons. In recent years, the design of handheld transmitters has also become increasingly important, as manufacturers increasingly focus on slimmer, lighter, and more elegant models. Heavy and bulky handheld transmitters are rarely found on the market these days.

They are particularly suitable as input keyboards membrane keypads or silicone keymats. Both variants allow adaptation to customer-specific needs and convince with a high variety of designs and equipment. The presence of physical buttons allows users to control the handheld transmitter quickly and precisely. Since each button has a specific function, the risk of operating errors is significantly reduced.

membrane keypad

The membrane keypad is very flat and is usually placed on the Housing glued. A membrane keypad consists of several layers of flexible materials with printed circuits and contacts. The construction of this film composite allows for the design of a thin and flexible keyboard, which ideal for integration into portable, small devicesThe decorative film, the top layer of the keyboard, is made of polyester or polycarbonate and is printed on the back to ensure maximum protection against abrasion. Compared to other flexible materials, polyester offers a long lifespan of over 1 million switching cycles, very high abrasion resistance, and chemical resistance.

Small membrane keypads
Small membrane keypads

The membrane keypads are generally very robust and resistant to dust, moisture and other environmental influences, which makes them ideal for applications in industrial plants or outdoors, for example. Membrane keyboards can also score points with their closed surface for medical devices that are frequently cleaned and disinfected.

Offer through embossed buttons or through the integration of metal domes membrane keypads tactile feedback, which facilitates operation without visual feedback. The snap disks, also known as snappers, are available in various sizes, shapes and actuation forces. Additional integrated LEDs or signaling devices provide the user with acoustic or optical feedback.

The Design variety of membrane keypads enables individually labeled or color-coded keys and thus ensures a high level of user-friendliness. Their attachment to the housing contributes significantly to the design of the device. Combined with their economical manufacture and ease of integration, they make them an attractive option for manufacturers and users alike.

silicone keymat

silicone keymats are the preferred choice for integration into a housing. They are characterized by their high adaptability and flexibility. The haptic perception and the variety of available surface structures deserve special mention. Keycaps made of metal or plastic, different key shapes and individual key colors can be easily combined with silicone keymats. Special coatings enable abrasion-resistant keys.

Silicone switch mats with plastic housing
Silicone switch mats with plastic housing

The safety mat activates a direct switching function on the underlying circuit board. The silicone safety mat influences not only the feel, visual appearance, and tactile impression, but also the electrical behavior via the integrated contact elements. The safety mat acts as a seal on the circuit board. Button designs with integrated seals ensure dust and moisture-proof integration of the housing up to IP67.

Silicone switch mat with light channel
Silicone switch mat with light channel

The silicone keymat It has a long mechanical lifespan of up to 10 million switching cycles, making it durable and virtually maintenance-free. The illumination of individual keys or the entire mat is achieved using LEDs in combination with transparent silicone or integrated light guides. A precise 2K injection molding process makes it possible to Status indicators in individual buttons to represent.

The force-displacement behavior of a silicone safety mat is individually adapted to the specific requirements of the respective application. high actuation forces of 200g to 500g and actuation travel from 0,3 to 5,0 mm typical for industrial applications. The advantages of the silicone keypad are particularly evident in large-scale production. While high tooling costs make small-scale production quite costly, they are significantly more cost-effective than individual switches, even in medium-sized series.

Multi-component injection molding

Another option for small handheld transmitters is the complete overmolding of a housing with integrated keyboard layout. A flat keyboard layout is injected onto the front panel of the housing. After the electronics are installed, they are ultrasonically welded to the back panel. The result is an optimal bond between the individual components and a completely sealed surface with a protection rating of up to IP68. Another advantage of multi-component injection molding technology is that only a single component is constructed. This significantly reduces investment costs and the effort required for production and quality assurance.

Plastic case with keyboard layout
Plastic case with keyboard layout

Conclusion

To select the ideal input keyboard, it is crucial to carefully consider the specific requirements of the product. The desired design, the required usability, and the tactile experience all play a crucial role. Ultimately, the goal should be to enable optimal interaction between user and product.

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Keyboard solutions have always been one of our core competencies and we support and advise you in detail with the equipment and the choice of materials. Also the complete one Development and construction We can take care of finding the right keyboard for your application. We look forward to your Inquiry!

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