Patent ID: 11865920
Assignee: HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 7:
8. The controller for vehicle air conditioner according to claim 7, further comprising:
a circuit board and a rotation detection component comprising a first element attached to or formed on the knob assembly, and a second element arranged on the circuit board, wherein the rotation detection component is selected from a group consisting of:
(1) a rotation detection component in which the first element is a detection magnet, and the second element is a Hall element, wherein the detection magnet is attached to the knob assembly, and the Hall element is arranged on the circuit board corresponding to the detection magnet;
(2) a rotation detection component in which the first element is a toothed ring, and the second element is a photoelectric switch, wherein the toothed rind comprises a plurality of notches, and the notches are arranged spaced apart along a circumferential direction of the knob assembly; the photoelectric switch comprises a light emitter and a light receiver which are arranged opposite to each other, and spaced from each other with a gap defined therebetween; when the knob assembly rotates, the toothed ring travels through the gap between the light emitter and the light receiver and alternately blocks and exposes the light emitted by the light emitter; and
(3) a rotation detection component in which the first element is a gear, and the second element is a potentiometer, wherein the gear is engaged with the knob assembly, the potentiometer comprises a rotatable shaft to which the gear is connected.