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DE-102024132612-A1 - Operating device of a motor vehicle and motor vehicle

DE102024132612A1DE 102024132612 A1DE102024132612 A1DE 102024132612A1DE-102024132612-A1

Abstract

Operating device for a motor vehicle, comprising a carrier (21), an operating element (22) which is displaceable on the carrier (21) from a rest position to an operating position in an actuation direction (B), and a magnetic operating haptic device (28) which is operatively connected to the operating element (22) such that, in the event of a displacement of the operating element (22) between the rest position and the actuation position caused by a load on the operating element (22) by a person, a counterforce acts in accordance with a predefined force-displacement characteristic, wherein the operating haptic device (28) comprises a first magnetic unit (30) and a second magnetic unit (40), wherein the first magnetic unit (30) is configured to load the operating element (22) against the actuation direction (B), and the second magnetic unit (40) is configured to load the operating element (22) in the actuation direction (B).

Inventors

  • Manuel Kühner
  • Thomas Schreiber
  • Bastian Duntz

Assignees

  • DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20241108

Claims (12)

  1. Operating device for a motor vehicle, comprising a carrier (21), an operating element (22) which is displaceable on the carrier (21) from a rest position to an operating position in an actuation direction (B), and a magnetic operating haptic device (28) which is operatively connected to the operating element (22) such that, in the event of a displacement of the operating element (22) between the rest position and the actuation position caused by a load on the operating element (22) by a person, a counterforce acts in accordance with a predefined force-displacement characteristic, characterized in that the operating haptic device (28) has a first magnetic unit (30) and a second magnetic unit (40), wherein the first magnetic unit (30) is configured to load the operating element (22) against the actuation direction (B), and the second magnetic unit (40) is configured to load the operating element (22) in the actuation direction (B).
  2. Operating device according to Claim 1 , characterized in that the magnetic units (30, 40) each comprise a permanent magnet (32, 42) and a ferromagnetic element (34, 44).
  3. Operating device according to Claim 2 , characterized in that the permanent magnet (32, 42) of the magnet unit (30, 40) is arranged on the control element (22) and the ferromagnetic element (34, 44) of the magnet unit (30, 40) is arranged on the carrier (21) or the ferromagnetic element (34, 44) is arranged on the control element (22) and the permanent magnet (32, 42) is arranged on the carrier (21).
  4. Operating device according to Claim 3 , characterized in that the permanent magnet (32) of the first magnet unit (30) is arranged on the control element (22) and forms the permanent magnet (42) of the second magnet unit (40), wherein the ferromagnetic elements (34, 44) of the magnet units (30, 40) are arranged on the carrier (21).
  5. Operating device according to Claim 3 , characterized in that the ferromagnetic element (34) of the first magnet unit (30) is arranged on the control element (22) and forms the ferromagnetic element (44) of the second magnet unit (40), wherein the permanent magnets (32, 42) of the magnet units (30, 40) are arranged on the carrier (21).
  6. Operating device according to one of the Claims 2 until 5 , characterized in that the distance between the permanent magnet (32) and the ferromagnetic element (34) of the first magnet unit (30) increases with the adjustment of the control element (22) in the direction of actuation (B) and the distance between the permanent magnet (42) and the ferromagnetic element (44) of the second magnet unit (40) decreases with the adjustment of the control element (22) in the direction of actuation (B).
  7. Operating device according to one of the preceding claims, characterized in that the force-displacement characteristic is designed such that the counterforce decreases when the operating element (22) is adjusted in the direction of actuation (B).
  8. Operating device according to Claim 7 , characterized in that the counterforce decreases linearly when the control element (22) is adjusted in the direction of actuation (B).
  9. Operating device according to one of the preceding claims, characterized in that the operating element (22) in the actuating position abuts a support fixed stop (50).
  10. Operating device according to one of the preceding claims, characterized in that the operating element (22) can be translationally displaced between the rest position and the actuating position.
  11. Operating device according to one of the preceding claims, characterized in that the operating element (20) is guided by the carrier (21) during the adjustment between the rest position and the actuating position.
  12. motor vehicle with an operating device (20) according to one of the Claims 1 until 11 .

Description

The invention relates to an operating device for a motor vehicle, comprising a carrier, an operating element which is mounted on the carrier in an actuation direction from a rest position to an actuation position, and a magnetic operating haptic device which is operatively connected to the operating element, such that when the operating element is displaced between the rest position and the actuation position by a person applying a load to it, a counterforce acts in accordance with a predefined force-displacement characteristic. Such operating devices are generally known from the prior art and are used in vehicle interiors for various applications and functions. For example, such an operating device can form a start-stop button, i.e., for starting and switching off a motor vehicle's traction engine. In the DE 10 2019 101 961 A1 For example, such an operating device is disclosed, wherein the operating device has an operating element that can be moved between a rest position and an actuated position. The operating element is operatively connected to an operating haptic device to provide a predefined force-displacement profile when the operating element is actuated, i.e., when it is moved between the rest and actuated positions. The operating haptic device has a magnetic unit and a spring unit, which are designed such that the magnetic unit causes a load on the actuating element opposite to the direction of actuation, and the spring unit also causes a load on the actuating element opposite to the direction of actuation. With this design, a force-displacement profile increases from the rest position to the actuated position, i.e., in the direction of actuation. Another haptic or force-displacement characteristic is that the force decreases in the direction of actuation, especially until the end stop. Crucially, for a positive tactile experience when a person operates the control element, a relatively high load or actuation force is required to release the control element from its rest position, followed by a significant drop in force until the actuation position is reached. This makes the haptic feedback when the control element is operated more pronounced. A problem with counterforce provided by a single magnetic unit is that the force drop is limited by the physics of magnets. The object of the invention is therefore to provide an operating device which requires a relatively high load or actuating force to release the operating element from the rest position, and provides a subsequent large force drop until the actuating position is reached. The problem is solved by the features of claim 1. According to the invention, the operating haptic device comprises a first magnetic unit and a second magnetic unit, wherein the first magnetic unit is configured to bias the operating element against the direction of actuation, and the second magnetic unit is configured to bias the operating element in the direction of actuation. The direction of actuation is defined such that the operating element moves from the rest position to the actuation position. The two magnetic units form a resultant force-displacement characteristic. The first magnetic unit provides a basic force-displacement characteristic such that a relatively high load is required to release the control element from its rest position. The force-displacement characteristic of the second magnetic unit is such that it has no significant effect on the holding force in the rest position or the release force from the rest position of the control element. Only after a certain distance has been traveled, particularly shortly after the control element has been released from its rest position, is the control element additionally loaded by the second magnetic unit. As the control element moves in the direction of actuation, the load on the control element from the first magnetic unit decreases, while the load on the control element itself increases. This results in a resultant force-displacement characteristic in which the counterforce decreases, particularly linearly, when the control element is moved in the direction of actuation. In this way, an operating device is provided which is designed such that when a person activates the control element, a relatively high load or actuation force is required to release the control element from its rest position, whereby a significant force drop occurs during the subsequent movement of the control element in the actuation direction until the actuation position is reached. In other words, the greatest possible force drop occurs over a predefined stroke, for example, 1 mm, when the control element is actuated. This improves the haptic feedback when The operation of the control element by a person was perceived as particularly concise and crisp. Preferably, both magnet units each have a permanent magnet and a ferromagnetic element, which allows the magnet units to be designed in a space-saving and cost-effective manner. The perman