Our Silicone Rubber Keypad Design guide assist product designers to understand the key parameters that need be considered when designing rubber keypads.
Our Silicone Rubber Keypad Design Guide gives designers an over view of all the elements that must be considered when they are looking to incorporate a Silicone rubber keypad in their products Human Machine Interface.
The Design Guide covers areas such as design of webbing, Force/travel considerations and other key design elements that need to be included when preparing CAD drawings.
We strongly recommend requesting our FREE Silicone Rubber Keypad Design Tool which will help when deciding on the ideal force and travel for your individual keys.
Our own UK design team are available to support you at any point in the process from simple concept discussions to detailed considerations of web design and keypad life. Please contact us via our web form or on +44(0)477 500206 to discuss your project in detail.
The section below is a sample of information available in our Silicone Rubber Keypad Design Guide
The snap ratio of a keypad is directly linked to the tactile feel experienced by the user. Designers should attempt to maintain ratios of around 40-60% only dropping below this if they are prepared to compromise tactile to ensure longer life.
Snap ratio is measured as F1-F2 divided by F1, where F1 is the actuation force and F2 is the contact force. See figure 3.
F1 = Actuation Force
F2 = Contact Force
FR = Min Return Force
FD = Drop Force (F1-F2)
S1 = Peak Stroke
S2 = Contact Stroke
Fig 3 – Snap Ratio Push Curve