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Operating unit for an in-vehicle system

  • US 10,343,523 B2
  • Filed: 12/12/2017
  • Issued: 07/09/2019
  • Est. Priority Date: 01/09/2017
  • Status: Active Grant
First Claim
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1. An operating unit for an in-vehicle system to control an operation of at least one in-vehicle electric device, comprising:

  • a touchscreen;

    a rotary knob that is arranged on the touchscreen;

    a shaft that extends through the touchscreen, the shaft being non-rotatably connected to the knob;

    an electromagnetic latching arrangement with a permanent magnet non-rotatably connected to the shaft and a plurality of electromagnets arranged circumferentially around an axis of rotation of the shaft in a radially outward direction with respect to the axis of rotation, the electromagnetic latching arrangement configured to allow different latched rotary positions of the rotary knob in a non-contact manner relative to the touchscreen; and

    at least one electronics assembly connected to the latching arrangement and configured to, in response to a variable function assignment of the rotary knob, control the latching arrangement by varying a number of the plurality of electromagnets to be energized such that an angle of rotation between adjacent latchable rotary positions of the rotary knob is varied.

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