An electronic sub-assembly 40 for a switch 10 comprises at least one switching element 80 connected to control electronics 85 by a flexible strip 90, which deforms to permit insertion of the sub-assembly into a switch housing 20. A mechanical sub-assembly 30 for a switch comprises an elongate bushing 50 having a mounting portion 55 and a neck portion, an elongate actuation shaft 60 mounted in the bushing, and a light pipe located within and co-axial to the actuation shaft. The housing comprises a plurality of recesses 25 to accommodate the mechanical and electronic sub-assemblies. The electronic sub-assembly may comprise an LED indicator 100 adapted to indicate multiple switch states by variation in colour and/or intensity, and may be driven by a constant current source. The mechanical sub-assembly may comprise at least one bearing located between the shaft and the bushing to allow longitudinal movement of the shaft along its axis within the bushing but limit shaft motion in a lateral direction. A spring may bias the shaft to a default position within the bushing whether the switch is pushed or pulled. Either or both of the mechanical and electronic sub-assemblies may be inserted into the housing fully assembled.
展开▼
