Patent ID: 11942286
Assignee: PHOENIX CONTACT ASIA-PACIFIC (NANJING) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A rotary knob switch comprising:
a knob head;
a fixing mount disposed below the knob head and configured to allow at least a portion of a bottom of the knob head to pass through it;
cam located at a bottom of the fixing mount and configured to be mated with the bottom of the knob head, such that the cam is configured to be rotated under the control of the knob head, a side of the cam forming at least one protruding control curved surface; and
a slider, the slider being coaxial with the cam, and a ramp with different heights being provided along an edge of the slider, wherein when the cam rotates, the control curved surface of the cam presses the ramp of the slider, such that the slider slides along an axial direction towards a bottom of the rotary knob switch, and
a slider-reset spring to provide an axial restoring elastic force for the slider,, wherein the cam comprises a variety of interchangeable models, the slider comprises a variety of interchangeable models, such that in the case of only the slider and the cam being replaced, different rotation gear position types are realized through a structural cooperation of the fixing mount, the cam and the slider, and at least one of a self-locking function and a self-resetting function is provided, wherein:
the knob head comprises a indicator block transparent to light,
a lower portion of the indicator block is provided with an axial light guide column, and
the indicator block further comprises a light guide reflection structure, the light guide reflection structure is configured to be used for: a first reflection of the light incident into the light guide reflection structure through the light guide column, and a secondary reflection of part of the first reflected light, such that the reflected light is emitted from the light-emitting top surface and the light-emitting side surface.