公开(公告)号：US20250065884A1

公开(公告)日：2025-02-27

申请号：US18943564

申请日：2024-11-11

Applicant: ZF CV Systems Global GmbH ,  ZF Friedrichshafen AG

Inventor： Felix Müller-Deile ,  Johannes Heseding ,  Franz Bitzer

IPC: B60W40/068 ,  B60W50/00

Abstract: A method is for estimating coefficients of friction for a vehicle, in particular utility vehicle, which can be driven by an electric drive. The method includes the steps of: operating, with a torque, a wheel of the vehicle, in particular utility vehicle, that is arranged on an underlying surface; ascertaining the slip of the wheel; applying a temporally predetermined excitation torque to the wheel, wherein the excitation torque is applied to the wheel periodically with a frequency; ascertaining a change in slip depending on the excitation torque, wherein the change in slip is ascertained taking into account the frequency; and ascertaining a coefficient of friction on the basis of the change in slip.

公开(公告)号：US20250042248A1

公开(公告)日：2025-02-06

申请号：US18292489

申请日：2022-07-22

Applicant: ZF Friedrichshafen AG

Inventor： Stefan Igl ,  Thomas Oberbuchner

IPC: B60K17/28 ,  B60K17/02 ,  B60K17/08

Abstract: The present invention relates to a powertrain (10) for a working machine, with a first electric machine (12) having a first drive output shaft (16) for providing drive power to the working machine and a second electric machine (14) having a second drive output shaft (24) for providing an auxiliary power take-off of the working machine. In addition, the powertrain (10) comprises a driving range transmission (18) with a countershaft (34). The driving range transmission (18) is designed to connect the first drive output shaft (16) to a driven axle (20) of the working machine, selectively either as a straight-through gear or, by way of a first gear ratio, by means of the countershaft (34). The second drive output shaft (24) is arranged coaxially with the countershaft (34). Furthermore, the invention relates to a working machine.

公开(公告)号：US12218551B2

公开(公告)日：2025-02-04

申请号：US17735620

申请日：2022-05-03

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Steffen Matschas ,  Steffen Einenkel ,  Thomas Walter ,  Gerald Viernekes ,  Günter Fahl

IPC: H02K11/21 ,  B60K6/26 ,  H02K1/32 ,  H02K7/00 ,  H02K9/19

Abstract: A rotor carrier for an electric machine having a sleeve-shaped receiving region and at least one flange-like carrier region connected to a hub or shaft. The receiving region has on its outer circumferential surface at least one driving groove extending in axial direction, and a plurality of radial oil bore holes are provided in the receiving region so as to be distributed over the circumference. An encoder wheel having a nonmagnetic material is provided at an axial end of the rotor carrier, and in that the encoder wheel protrudes over the receiving region in radial direction to serve as an axial limit for a rotor lamination stack.

公开(公告)号：US12215738B2

公开(公告)日：2025-02-04

申请号：US17782524

申请日：2020-11-20

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Günter Reddehase ,  Jörg Heemann

IPC: F16C11/06 ,  B60G7/00

Abstract: A three-point link having two control arms forming an acute angle and meet at a central joint. The central joint has a cylindrical dome extending perpendicular to a plane defined by the control arms. The central joint has a joint ball penetrated by the dome. To prevent separation of the central joint, it has a captive securing device which functions as a stop that extends perpendicular to an axial direction. The securing device is penetrated by the dome and is secured against axial withdrawal by an annular securing element. Viewed in axial direction, the annular securing element is arranged on a side of the captive securing device) remote of the joint ball and engages in a circumferential groove of the dome. The annular securing element is snugly surrounded in radial direction by the captive securing device to prevent a withdrawal of the annular securing element from the circumferential groove.

公开(公告)号：US12215737B2

公开(公告)日：2025-02-04

申请号：US18002872

申请日：2021-06-23

Applicant: ZF Friedrichshafen AG

Inventor： Artur Berger ,  Thomas Richter

IPC: B60G17/019 ,  F16C11/04 ,  F16C11/06 ,  G01B7/30

Abstract: A chassis component (1, 38, 40) has a joint inner portion (2) and a structural component (3), where the joint inner portion (2) is fitted and able to move in an articulated manner in a joint holder (4). A measuring device (5) is configured to determine a relative position of the joint inner portion (2) with respect to the structural component (3) and includes a first measuring element (6) and a second measuring element (7). The first measuring element (6) is on the structural component (3) and the second measuring element (7) is on the joint inner portion (2). In one example, the joint inner portion (2) extends out of the joint holder (4) and the second measuring element (7) is attached on a section (8) of the joint inner portion (2) which is outside the joint holder (4).

公开(公告)号：US20250033693A1

公开(公告)日：2025-01-30

申请号：US18359408

申请日：2023-07-26

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Ryan Noerenberg

IPC: B62D5/04

Abstract: A steering system for use in turning steerable vehicle wheels includes a steering wheel and a housing. A pinion is in the housing and connected to the steering wheel such that rotation of the steering wheel results in rotation of the pinion about a rotational axis relative to the housing. A first bearing rotatably supports a first end of the pinon in the housing. A second bearing rotatably supports a second end of the pinon in the housing. A worm wheel is meshed with the pinion in the housing and connected to steerable vehicle wheels. The worm wheel transfers torque from the steering wheel to the steerable vehicle wheels to effect turning of the steerable vehicle wheels. A pressing device applies a pressing force to the second end of the pinion via the second bearing to urge the pinion toward the worm wheel.

公开(公告)号：US20250033690A1

公开(公告)日：2025-01-30

申请号：US18359325

申请日：2023-07-26

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Ryan Noerenberg

IPC: B62D5/00 ,  B62D5/04

Abstract: A steering system for use in turning steerable vehicle wheels includes a gear in a housing and rotatable relative to the housing via an electric motor. A planetary gear stage is in the housing and has a sun gear, a planetary gear meshed with the sun gear, and a carrier connected to the planetary gear. Rotation of the gear urges the sun gear to rotate about an axis. Rotation of the sun gear urges the planetary gear to rotate relative to the housing and orbit the sun gear. The carrier is urged to rotate about the axis in response to the planetary gear rotating relative to the housing and orbiting the sun gear. A bearing has a first race on the gear and a second race on the carrier. The gear and the carrier are rotatably supported in the housing on one another via the bearing.

公开(公告)号：US20250033687A1

公开(公告)日：2025-01-30

申请号：US18716254

申请日：2022-12-07

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Ingo BECKER

IPC: B62D1/16 ,  B62D5/00

Abstract: The invention relates to a method for producing an arrangement (1) for a steering device, said arrangement (1) comprising an input shaft (2) and an output shaft (3) and a torsion element (12) coupling the input shaft (2) and the output shaft (3), wherein, in the assembly of the arrangement (1), a coupling status is adopted in which the input shaft (2) is rotationally fixed to the output shaft (3) in an orientation defined by a coupling device (5), and the coupling status is released before the fixing of the torsion element (12) on the input shaft (2) and/or the output shaft (3).

公开(公告)号：US12212204B2

公开(公告)日：2025-01-28

申请号：US17435795

申请日：2020-03-03

Applicant: ZF Friedrichshafen AG

Inventor： Katja Willacker ,  Christian Brückner ,  Daniel Schmitt

IPC: H02K11/25 ,  H02K3/50

Abstract: The disclosure relates to a wiring configuration for a stator of an electric machine. The wiring configuration comprises a busbar which forms a segment of a switching ring with an outer connection and a winding connection. Outer connection elements and winding connection elements are arranged in a wiring region. The wiring configuration additionally comprises a receiving element which is at least thermally coupled to the busbar. The receiving element is arranged outside of the wiring region. The disclosure additionally relates to a temperature sensor device for plugging onto the receiving element of the wiring configuration and to a system for detecting the temperature of a stator.

公开(公告)号：US12212186B2

公开(公告)日：2025-01-28

申请号：US17554489

申请日：2021-12-17

Applicant: ZF Friedrichshafen AG

Inventor： Martin Christians ,  David Wörzler ,  Rayk Gersten ,  Stefan Spühler ,  Martin Jelinewski ,  Wolfgang Hübler ,  Timo Hele ,  Karlheinz Hoher

IPC: H02K1/20 ,  H02K3/52 ,  H02K9/16

Abstract: A cooling arrangement for cooling a stator for an electric machine. The cooling arrangement comprising a stator fixedly mounted relative to a rotational axis. The stator comprises a stator yoke and stator grooves. Windings are provided in the stator grooves, which form first and second winding heads. First and second fluid rings are provided at opposite ends on the stator yoke. The first fluid ring has a fluid inflow opening from a stator housing. The stator yoke has a plurality of axial stator ducts extending in the axial direction, which enable the inflowing fluid to flow through from the first fluid ring to the second fluid ring, and the second fluid ring redirects some of the fluid.