Patent ID: 6196076
Filing Date: 2001-03-06
Classification: B25D,Y10T

Abstract:
A knob switch device comprising:an inner casing having a canister with a circumference, a plurality of teeth on the circumference of the canister;a press ring fit over the canister;a spring disposed for urging the press ring toward the canister of the inner casing;a stop ring engaging the canister and being freely rotatable on the canister;a switch set and a switch block both fit over the canister and both comprising respective teeth thereon to be engageable with each other and also disengageable;a vibration block comprising teeth on one end, and being fit into the inner casing, anda fixing member having teeth on one end, the fixing member being fit in the inner casing, the teeth of the vibration block and of the vibration set correspond to each other and the teeth of the vibration block are engageable with the teeth of the fixing member;an output shaft over which a spring, the switch set, the switch block, the vibration block, and the fixing member are sequentially fit, the output shaft being received in the canister of the inner casing,a stop ring having a plurality of arc sections of unequal inner radii, each defining continuous paths having different heights, the stop ring being fit over the canister of the inner casing and freely rotatable thereon;a switch device set on the top end of the stop ring comprising:a stop board comprising a convex ring having an inner radius fit over the canister of the inner casing, the convex ring having a notch formed thereon, the stop board comprising a plurality of arc sections engageable with the paths defined by the arc sections of the stop ring;a gyrator ring having a circular inner circumference having a recess, the recess having a radius greater than radius of the circular inner circumference;a pin-like clutch disposed in the notch of the stop board;a turning ring, which is a circular shape disk having plural holes lined along the circular shape of the turning ring, the turning ring being drivingly coupled to the switch block;an inward-toothed ring comprising a circular disk having plural posts lined circularly, the posts having a radius smaller than radius of the holes of the turning ring and received in the holes of the turning ring;an outward-toothed ring having plural teeth on an outer circumference, the number of the teeth of the outward-toothed ring being one tooth lesser than the teeth of the inward-toothed ring outward-toothed ring and being received in the inward-toothed ring with the teeth engaging each other in an eccentric manner; anda knob covering the stop ring and the gyrator ring the knob allowing a rotation of 360.degree. to switch the clutch between the switch block and switch set, and thus making the output shaft to be switched between simple rotation and rotation with vibration.