Patent ID: 9190224
Filing Date: 2015-11-17
Classification: H01H

Abstract:
1. A switch assembly formed by a coaxial assembly along a longitudinal axis of the switch, said switch comprising: a cylindrical core axially extending from a core-base to a distal end, wherein the core-base is fixed to a base plate; a knob extending from a knob-base to a distal knob-top, wherein the knob is axially rotatable about the cylindrical core; a switching means for generating an electrical signal dependent on the rotations of the knob; and a guide means for guiding the knob in its motions relative to the core, said guide means comprising an upper-guide in the vicinity of the core-end and the knob-top, and a lower-guide in the vicinity of the core-base and the knob-base, wherein the upper-guide comprises rolling elements, said rolling elements configured to roll between an upper-guide inner race integral to the core, and an upper-guide outer race integral to the knob, wherein the outer race is truncated with upward apex, and wherein the switch assembly further comprises an upward bias means for generating an upward axial force biasing the rolling elements onto the upper-guide outer race.