US-12623640-B2 - Actuation device for a motor vehicle, motor vehicle

US12623640B2US 12623640 B2US12623640 B2US 12623640B2US-12623640-B2

Abstract

An actuation device for a motor vehicle, in particular for specifying a braking and/or acceleration request, with a first and a second housing portion is disclosed. The first housing portion includes an actuating surface on a top surface facing away from the second housing portion, or a cover with the actuating surface is arranged on the top surface. The housing portions are connected to each other by a hinge. An axis of rotation of the hinge is arranged laterally spaced apart from the actuating surface.

Inventors

Guenter Escher
Bernd Lutz
Eduard Maiterth
Juergen Kissner
Manfred Fischer
Martin Baeuml
Martin Winkler
Stephan Knackert
Timo Knecht

Assignees

ROBERT BOSCH GMBH

Dates

Publication Date: 20260512
Application Date: 20231115
Priority Date: 20221122

Claims (18)

1 . An actuation device for a motor vehicle for specifying a braking and/or acceleration request, comprising: a housing having a first housing portion; and a second housing portion, wherein the first housing portion includes an actuating surface on a top surface facing away from the second housing portion, or a cover with the actuating surface arranged on the top surface, wherein the first housing portion and the second housing portion are connected to each other by a hinge, and wherein an axis of rotation of the hinge is arranged laterally spaced apart from the actuating surface.
2 . The actuation device according to claim 1 , wherein at least one of the first housing portion and the second housing portion is configured at least approximately mirror-symmetrically in transverse extension and/or longitudinal extension.
3 . The actuation device according to claim 1 , wherein the axis of rotation is arranged in a plane below the actuating surface.
4 . The actuation device according to claim 1 , wherein the axis of rotation runs at least approximately parallel to an edge of the actuating surface and/or at least one of the first housing portion and the second housing portion and/or is aligned transversely to a longitudinal extension of the actuating surface and/or at least one of the first housing portion and the second housing portion.
5 . The actuation device according to claim 4 , wherein a distance of the axis of rotation to the edge is less than half of the longitudinal extension of the actuating surface and/or at least one of the first housing portion and the second housing portion.
6 . The actuation device according to claim 4 , wherein a distance of the axis of rotation to the edge is less than the longitudinal extension of the actuating surface and/or at least one of the first housing portion and the second housing portion.
7 . The actuation device according to claim 1 , wherein the hinge with the axis of rotation is arranged on the actuation device such that the axis of rotation, when used as intended, is arranged in the longitudinal direction of the actuating surface behind the actuating surface.
8 . The actuation device according to claim 1 , wherein: the hinge includes a first and a second hinge element, and the hinge elements are pivotally mounted to each other around the axis of rotation.
9 . The actuation device according to claim 8 , wherein: the first hinge element is formed integrally with the first housing portion, and/or the second hinge element is formed integrally with the second housing portion.
10 . The actuation device according to claim 8 , wherein: the first hinge element is connected to the first housing portion, and/or the second hinge element is connected to the second housing portion.
11 . The actuation device according to claim 8 , wherein at least one of the hinge elements is formed integrally with one of the first housing portion and the second housing portion.
12 . The actuation device according to claim 8 , wherein at least one of the hinge elements is connected to one of the first housing portion and the second housing portion.
13 . The actuation device according to claim 1 , further comprising at least one electrical component of a sensor arrangement for detecting an actuating force exerted on the actuating surface arranged in a bottom region of the second housing portion.
14 . The actuation device according to claim 13 , further comprising at least one illumination device arranged in a bottom region of the second housing portion, wherein the at least one electrical component of the sensor arrangement and the illumination device are arranged on a common printed circuit board.
15 . The actuation device according to claim 1 , further comprising at least one illumination device arranged in a bottom region of the second housing portion.
16 . The actuation device according to claim 15 , further comprising a light-guiding element for the illumination device, wherein: the light-guiding element is arranged in the first housing portion or the second housing portion, and the light-guiding element extends from the illumination device to an opening in the actuating surface.
17 . The actuation device according to claim 15 , wherein the at least one illumination device includes a light-emitting diode.
18 . A motor vehicle comprising at least one actuation device according to claim 1 .

Description

This application claims priority under 35 U.S.C. § 119 to patent application no. DE 10 2022 212 427.8, filed on Nov. 22, 2022 in Germany, the disclosure of which is incorporated herein by reference in its entirety. The disclosure relates to an actuation device for a motor vehicle, in particular to specify a braking and/or acceleration request. In addition, the disclosure relates to a motor vehicle having at least one such actuation device. BACKGROUND From the prior art, it is known to detect an actuation of an actuation device for a motor vehicle which can be actuated by a driver using a sensor assigned to the actuation device. If the driver actuates the actuation device, a braking or acceleration request of the driver is in particular detected as a function thereof. For example, brake systems with electromechanical brake amplifiers are known that, together with a vehicle assistance system, in particular an electronic stability program (ESP), form a redundant brake-by-wire system, in which there is no mechanical connection from the actuation device to the brake system. A braking request is forwarded, for example, as a function of an actuation of the actuation device to an electromechanical actuator which is designed to carry out a pressure build-up in the braking system. Analogously, actuation devices for drive units, in particular with internal combustion engines and/or electric motors, are known from motor vehicles which are part of a drive-by-wire system without a mechanical connection to the drive unit. For example, an acceleration request is detected as a function of an actuation of the actuation device and forwarded to the drive unit. Due to the lack of mechanical coupling of the actuation devices to the brake system and/or the drive unit, it is possible to design such actuation devices which are stroke-free or with at least a low stroke of a few millimeters. The use of different measurement methods is known for detecting the actuation. For example, the disclosure documents DE 10 2017 119 392 A1, DE 102 39 913 A1, and DE 103 12 547 A1 each disclose stroke-free pedals as well as the detection of an actuation of a stroke-free pedal by means of strain gages. SUMMARY The actuation device according to the disclosure is characterized in that it comprises a first and a second housing portion, the first housing portion comprises an actuating surface on a top side facing away from the second housing portion, or that a cover with the actuating surface is arranged on the top side, the housing portions are connected to each other by a hinge, and in that an axis of rotation of the hinge is arranged laterally spaced apart from the actuating surface. The hinge arranged laterally spaced apart from the actuating surface ensures a particularly advantageous mounting of a low-stroke actuation device as described above. The axis of rotation is not mounted below the actuating surface, but rather is outside the actuating surface. This ensures that the actuation device can be actuated via the actuating surface whenever it is actuated. There is a sufficiently large lever arm between the actuating surface and the axis of rotation that always allows actuation regardless of where a force is applied to the actuating surface. The actuation device according to the disclosure thus provides an advantageous alternative to actuation devices with traditional kinematics, in particular pedal assemblies with a long swing arm and fixation to a motor vehicle's firewall, as well as pedals with a tilt axis lying below a tread surface. In contrast, a novel arrangement of the axis of rotation with a short swing arm is provided in the actuation device according to the disclosure, which is advantageously ensured by the correspondingly arranged axis of rotation of the hinge. The mounting point is therefore not arranged on a body of the motor vehicle, in particular on the firewall, but is part of the actuation device or the housing portions themselves. The elimination of the long swing arm advantageously reduces the cost of assembly and generates additional space that is useful for other components. In addition, the elimination of the long pedal lever significantly reduces the mass of the entire actuator. The hinge with the axis of rotation connects the first housing portion as a housing upper portion to the actuating surface and the second housing portion as a housing lower portion. The second housing portion is in particular configured to be mounted in a ground region of the motor vehicle in front of a driver's seat. When installed in the motor vehicle as intended, the hinge is located in the longitudinal direction, in particular spaced apart from the actuating surface, as well as below a plane of the actuating surface, in particular at the height of the second housing portion. Preferably, at least one spring element, in particular configured as a coil spring, is arranged between the housing portions as a return spring. Particularly preferably, a