Patents Assigned to ZF Active Safety GmbH
  • Patent number: 11745709
    Abstract: The invention relates to a signal-processing device (402) for a vehicle having an ABS unit (404) and multiple wheels, each of which is assigned a sensor (S1, S2, S3, S4) for wheel signal generation. The signal-processing device (402) is designed to detect (602) a failure of a wheel signal, to form (604) a substitute signal for the failed wheel signal using the wheel signal of at least one sensor assigned to a wheel that is not affected by the failure, and to supply (606) the substitute signal to the ABS unit (404). The invention also relates to an ABS system (400) having the signal-processing device (402) and an ABS unit (404), a vehicle having the ABS system (400), a signal-processing method for a vehicle having an ABS unit (404), a computer programme having computer code for carrying out the signal-processing method, as well as a control unit containing the computer programme.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 5, 2023
    Assignee: ZF Active Safety GmbH
    Inventor: Andreas Passmann
  • Patent number: 11692602
    Abstract: Brake apparatus for a motor vehicle with a restoring apparatus, comprising a brake support body, a brake lining, a restoring apparatus for the brake lining, and a wear compensation means, the restoring apparatus being connected via the wear compensation means to the brake lining, the restoring apparatus having a lever arm which comprises a spring section, a supporting bearing and a lever bearing, the lever bearing being arranged between the spring section and the supporting bearing.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: July 4, 2023
    Assignee: ZF Active Safety GmbH
    Inventors: Paul Wecker, Marco Becker, Guido Zenzen, Lukas Madzgalla, Joerg Knieper, Florian Roessinger, Peter Mäurer, Philipp Schwenzer
  • Patent number: 11691606
    Abstract: A brake system includes a first functional unit having at least one first hydraulic pressure generator, which is designed to build up a hydraulic pressure at a wheel brake, and a first hydraulic fluid reservoir, from which the first hydraulic pressure generator can draw in hydraulic fluid. The brake system furthermore comprises a second functional unit having at least one second, electric hydraulic pressure generator, which is controllable in order to build up a hydraulic pressure at the wheel brake, a check valve and at least one second hydraulic fluid reservoir, having an outlet, via which the second, electric hydraulic pressure generator can draw in hydraulic fluid, and an inlet, relative to which the check valve is arranged upstream in such a way that it has a blocking effect toward the inlet in respect of a flow direction.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: July 4, 2023
    Assignee: ZF Active Safety GmbH
    Inventor: Heinrich Plewnia
  • Patent number: 11667263
    Abstract: An actuator for an electric parking brake, EPB, is described. The actuator comprises a motor configured to actuate an actuating member of the EPB, as well as a reception interface configured to receive an enablement code. An enablement code is assigned to the EPB actuator which individualizes the EPB actuator against other EPB actuators. The actuator further comprises an evaluation unit configured to verify the received enablement code on the basis of the enablement code allocated to the EPB actuator and to enable a control of the motor in case of a positively verified enablement code. There is further provided a control device for the EPB actuator, an electric parking brake and a vehicle having the EPB actuator and corresponding operating methods.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: June 6, 2023
    Assignee: ZF Active Safety GmbH
    Inventors: Andreas Kubb, Jens-Peter Kohrt, Ralf Kinder, Stefan Grieser-Schmitz
  • Patent number: 11643061
    Abstract: A pedal simulation device, comprising: a housing; an abutment region that is coupled with the housing in a substantially rigid manner; a piston that is received in the housing and can be moved in a direction of actuation by passing through successive first and second actuation phases; and a return device that is configured to exert a resetting force on the piston that acts counter to the displacement of the piston in the direction of actuation.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: May 9, 2023
    Assignee: ZF Active Safety GmbH
    Inventors: Carlos Erviti, Jorge Trobajo, Ana Maisterra, Omayra Zapata
  • Patent number: 11639165
    Abstract: The gear assembly can be operatively connected on the input side to a drive machine and on the output side preferably to an actuating element of the electrically operable brake and comprises at least one gear stage. The at least one gear stage comprises at least two intermeshing gear wheels, of which at least one gear wheel is rotatably mounted on an axle element by engagement of the axle element in a receptacle of the at least one gear wheel. The receptacle and the axle element have mutually corresponding peripheral surfaces, of which, in the axial direction, at least one peripheral surface has an outwardly curved contour and the other peripheral surface has a contour designed such that the peripheral surfaces roll against one another on the contours in order to bring the at least one gear wheel and the axle element into an oblique position relative to one another.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: May 2, 2023
    Assignee: ZF Active Safety GmbH
    Inventor: Jan Niklas Baer
  • Patent number: 11590957
    Abstract: The present disclosure relates to a method for testing a brake fluid sensor of a vehicle braking system, wherein the brake fluid sensor can indicate the fluid level in the fluid reservoir, wherein the method has the following steps: (1) Altering the fluid level in at least one region of the at least one fluid reservoir by means of at least one braking force generating device; and (2) Detecting whether the at least one brake fluid sensor emits a signal indicating the modified fluid level in the at least one region of the at least one fluid reservoir.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: February 28, 2023
    Assignee: ZF Active Safety GmbH
    Inventor: Heinrich Plewnia
  • Patent number: 11590958
    Abstract: A method for detecting undesirable vibrations of an actuator of an electromechanical brake includes the steps of: (1) providing an electrical signal comprising at least one piece of information about a current consumption of the actuator or a parameter correlated with the current consumption; (2) monitoring an operation of the actuator on the basis of the gradient of the electrical signal in such a way that after switching on the actuator and preferably after a subsequent delay time, which includes determining: whether the amount of an initial instantaneous value of the gradient exceeds the amount of a threshold and whether a subsequent second instantaneous value of the gradient has an inverted sign compared to the first instantaneous value; (3) evaluating the results to ensure that an undesirable vibration is assessed as detected the aforementioned conditions are met.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: February 28, 2023
    Assignee: ZF Active Safety GmbH
    Inventors: Andreas Müller, Ralf Kinder
  • Patent number: 11590945
    Abstract: An electrohydraulic vehicle braking system is provided, comprising an electrically controllable first hydraulic pressure generator and an electrically controllable second hydraulic pressure generator. The braking system further comprises a first valve device for each wheel brake, having at least one first valve, wherein in an electrically uncontrolled state the first valve device separates its associated wheel brake from an output of the first hydraulic pressure generator, and in an electrically controlled state connects it to the output of the first hydraulic pressure generator. In addition, a second valve device for each wheel brake is provided, having a second valve between an output of the second hydraulic pressure generator and its associated wheel brake, as well as a third valve between this wheel brake and a first hydraulic fluid reservoir. The first valve device and the second valve device are arranged in parallel to one another.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: February 28, 2023
    Assignee: ZF Active Safety GmbH
    Inventors: Frank Einig, Blaise Ganzel, Nicholas Alford
  • Patent number: 11590946
    Abstract: A method and device for a vehicle having wheels which are each assigned a sensor for generating wheel signals. The unit determines whether a wheel is affected by a failure of the corresponding wheel signal. The unit acquires wheel signals which are assigned to the wheels, and for a wheel affected by a wheel signal failure, the corresponding wheel signal is acquired in the form of a substitute signal. The unit calculates a target brake pressure for a wheel at which an increase in brake pressure is necessary. The increase in brake pressure takes place in accordance with the wheel signal which is obtained for the wheel and in accordance with the determination as to whether the wheel is affected by a wheel signal failure. The unit further determines a slip threshold for an anti-lock brake control operation applied to the wheel affected by the wheel signal failure.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: February 28, 2023
    Assignee: ZF Active Safety GmbH
    Inventor: Andreas Passmann
  • Patent number: 11542628
    Abstract: The present disclosure relates to an electrode for eloxing a component, in particular a component of a vehicle brake system, comprising an electrolyte inlet for feeding an electrolyte into the electrode, an inlet channel, which connects the electrolyte inlet to an electrolyte outlet opening formed in the region of an outer surface of the electrode, an electrolyte inlet opening formed in the region of the outer surface of the electrode at a distance from the electrolyte outlet opening, an electrolyte flow path, which runs between the electrolyte outlet opening and the electrolyte inlet opening along the outer surface of the electrode and is designed to bring a surface portion of the component, which surface portion is to be eloxed, into fluid contact with the electrolyte flowing through the electrolyte flow path, an outlet channel, and an electrolyte outlet.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: January 3, 2023
    Assignee: ZF Active Safety GmbH
    Inventor: Dennis Monpetit
  • Patent number: 11535228
    Abstract: A filling level sensing device for a liquid reservoir, in particular for a compensation tank of a vehicle brake system, includes at least one float, at least one sensor element connected to the at least one float, and at least two sensors for detecting the position of the at least one sensor element. The float may be designed to come into contact with the liquid in the liquid reservoir. At least one of the two sensors may sense a change in the filling level of the liquid reservoir depending on the position of the at least one sensor element relative to the at least two sensors.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: December 27, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Daniel Noll, Dennis Wagner, Soeren Lehmler
  • Patent number: 11536331
    Abstract: The invention relates to a disc brake, comprising a brake carrier, a brake caliper, brake shoes, and an actuating piston. The brake carrier has at least one mounting point for mounting on a vehicle. The actuating piston is displaceably accommodated on the brake caliper and is actuatable for carrying out a service brake function of the disc brake. At least one further actuating piston is provided, which in the direction of its longitudinal axis is displaceably accommodated on the brake caliper. For carrying out the service brake function, the at least two actuating pistons are actuatable, and for carrying out a parking brake function, one of the actuating pistons is actuatable. The invention further relates to a disc brake system and a parking brake system.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: December 27, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Guido Zenzen, Frank Wilhelm Madzgalla, Christian Schroeter
  • Patent number: 11472380
    Abstract: A force input member for a brake actuating device of a vehicle brake system includes at least one first portion connected to the brake actuating device; at least one second portion connected to a brake pedal; and at least one coupling device. The at least one coupling device couples the first portion and the second portion to one another wherein the at least one coupling device is designed to permit a relative movement between the first portion and the second portion in the case of a force acting on the force input element which is greater than or equal to a predetermined release force.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: October 18, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Klaus Lemke, Christian Freund, Robert Barnkow
  • Patent number: 11472393
    Abstract: The present disclosure pertains to a coupling device for coupling a fluid reservoir for a brake fluid with a brake actuation device. The coupling device includes at least one coupling extension provided at the fluid reservoir with a first recess, a second recess configured in the area of an edge of the brake actuation device as well as a hole configured in the brake actuation device and open to the second recess, a bridge element crossing the second recess along the edge of the brake actuation device and a coupling element with at least one striker, wherein, when the fluid reservoir is coupled to the brake actuation device, the hole is aligned with the first recess along a central longitudinal axis of the striker and the striker passes through the first recess and engages with the hole. The present disclosure also pertains to a vehicle brake system equipped with such a coupling device.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: October 18, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Markus Mallmann, Marcus Janson
  • Patent number: 11466739
    Abstract: A brake caliper arrangement includes a housing, a restoring device, a first brake lining arrangement and a second brake lining arrangement. The first brake lining arrangement and the second brake lining arrangement can be moved relative to one another from a respective starting position with a reduction of an initial spacing which exists between them. The restoring device includes first and second restoring elements. The first restoring element may prestress the first brake lining arrangement into its starting position, while the second restoring element may prestress the second brake lining arrangement into its starting position. The first and/or second restoring elements may be supported, on both sides of a central region of the brake lining arrangement, on the associated brake lining arrangement. The first and/or second restoring elements may be twisted elastically at least in sections in order to generate the prestress.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: October 11, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Guido Zenzen, Marco Becker, Frank Wilhelm Madzgalla, Christian Schroeter, Jörg Knieper, Florian Roessinger, Peter Mäurer
  • Patent number: 11448276
    Abstract: A brake lining restoring device includes at least one clamping limb with at least one first aperture, at least one base limb, and at least one clamping limb. The clamping limb and the one base limb may be connected to one another via at least one spring section. The clamping limb may be moved under elastic deformation relative to the at least one base limb. The brake lining restoring device may include a frictionally locking connection to a holding element which is assigned to the brake lining arrangement can be established via one edge (R) of the first aperture of the clamping limb.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: September 20, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Guido Zenzen, Marco Becker, Lukas Madzgalla, Peter Mäurer, Philipp Schwenzer, Paul Wecker, Jörg Knieper, Florian Roessinger
  • Patent number: 11448275
    Abstract: The present disclosure relates to a method for operating a vehicle brake. The vehicle brake includes a hydraulic service brake having an actuating piston, which for generating a first braking force component is movable, under the action of a hydraulic pressure, into an actuating position in which the actuating piston presses a friction lining against a rotatingly supported brake disc, and an electric parking brake, with an actuating element, that is designed to build up a second braking force component that acts on the brake disc. The method includes ascertaining the hydraulic pressure, determining a first braking force component, establishing a second braking force component to be set by means of the parking brake, based on the first braking force component and a desired total braking force, and establishing a position of the actuating element of the parking brake to be set.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: September 20, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Erwin Michels, Benedikt Ohlig, Michael Bast, Matthias Fuchs
  • Patent number: 11312343
    Abstract: The invention relates to a motor vehicle control unit. The control unit comprises a first processor system, which is designed to control an actuator of an electric parking brake and at least one additional motor vehicle function unit. A second processor system of the control unit is designed to control the at least one actuator in an at least partially redundant manner to the first processor system. Furthermore, there is a changeover device, which is designed to enable an activation of the at least one actuator either via the first processor system or the second processor system.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: April 26, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Ingo Alfter, Stefan Grieser-Schmitz
  • Patent number: 11312346
    Abstract: A hydraulic motor vehicle braking system comprises an electronic stability control (ESC) system of dual-circuit design, a first brake circuit which acts on one or more first wheel brakes, and a second brake circuit which acts on one or more second wheel brakes. The first brake circuit comprises a first hydraulic pressure generator which is electrically controllable for control interventions, and the second brake circuit comprises a second hydraulic pressure generator which is electrically controllable, independently of the first hydraulic pressure generator, for control interventions.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 26, 2022
    Assignee: ZF Active Safety GmbH
    Inventors: Erwin Michels, Benedikt Ohlig, Matthias Fuchs