When a parking brake mechanism is in a braking state and an operation switch is switched to a braking-released state, a control unit of an electric vehicle brings a parking brake mechanism into a braking-released state on the condition that the control unit detects using a stop lamp switch that the brake pedal is not depressed and detects that the shift range of the shift lever is a P range.

A parking lock of a vehicle is normally controlled by a first control unit. In the presence of a predefined condition, control of the parking lock is assumed by a second control unit of the vehicle and the first control unit is disabled, at least in part, when the predefined condition is present.

A system for the remote actuation of a parking brake in a vehicle, thereby to insure that the parking brake of the vehicle is set when the driver exits the vehicle, includes: an actuator disposed within a vehicle equipped with air brakes and a parking brake button and coupled to the parking brake button and configured to set the parking brake upon the occurrence of a predetermined event; and a remote actuation device configured to be with the driver of the vehicle and to indicate to the actuator when the driver exits the vehicle such that the actuator sets the parking brake if not already set.

A vehicle engine activation control system includes a starter connected to a battery; an input unit configured to generate an operation request in response to input from a driver; an electric parking brake device including an electric motor connected to the battery, wherein the electric motor starts driving in response to the operation request; an idle stop control unit configured to automatically stop an engine and automatically reactivate the engine by the starter; and a mediating unit configured to prohibit the driving of the electric motor in response to a predetermined operation request, in at least one of a case where the predetermined operation request is generated while the engine is automatically stopping or after the automatic stopping of the engine is completed, and a case where the predetermined operation request is generated during the reactivation of the engine.

A method for controlling a pneumatic braking system of a utility vehicle that includes a service brake and an electric parking brake, an electronic control unit being provided for controlling the electric parking brake. The parking brake assists a brake intervention of the utility vehicle when there is a circuit failure of the service brake.

The present disclosure provides an actuator assembly comprising a ballnut having a helical track, an actuator drive unit (ADU) housing having an ADU track, and a ballscrew. In various embodiments, the ballscrew comprises a first translation bearing track, wherein the helical track and the first translation bearing track form a first translation bearing raceway in which a plurality of first translation bearing balls having a first diameter are disposed, and a second translation bearing track, wherein the helical track and the second translation bearing track form a second translation bearing raceway in which a plurality of second translation bearing balls having a second diameter are disposed, wherein the first diameter and the second diameter are not equal.

A device for generating a force applied to a component includes a force generating element supported on a resilient support device having first and second, or only a second, spring elements in series in a force transmission chain being stressed during force transmission. The first spring element is less stiff than the second. The first spring element is stressed by a first supporting force over a first spring travel. A spring travel exceeding the first spring travel and a force absorption by the first spring element exceeding the first supporting force are prevented by a first mechanical engaging device. The second spring element is formed by a spring module having a second spring stressed by a second mechanical engaging device with a second supporting force permitting the second spring to only be further stressed when exceeding the second supporting force. A travel sensor detects displacement of the force generating element.

A gearing unit of a motor vehicle actuator, in particular an electric parking brake, includes a gearing housing in which a driven first shaft and a driving second shaft having fixed rotational axes are located. A first toothed wheel is mounted on the first shaft and a second toothed wheel is mounted on the second shaft. The first toothed wheel and the second toothed wheel engage with one another through a third toothed wheel. The housing for the third toothed wheel has at least two spatially offset bearing points in order to adjust a transmission ratio between the first shaft and the second shaft. An electric parking brake having a gearing unit is also provided.

Provided is a brake device that is able to achieve an improvement in versatility of the device, and which is able to reduce an uncomfortable feeling and annoyance caused by an operating noise of a parking brake. This brake device includes: left and right parking brake mechanisms configured to independently apply braking forces to left and right wheels of a vehicle, respectively, and hold the vehicle stationary; and a control device configured to control these parking brake mechanisms. The control device includes a parking brake actuation determiner configured to adjust respective timings at which the left and right parking brake mechanisms are actuated so as to reduce an uncomfortable feeling caused to an occupant of the vehicle.

Provided is an electric parking brake device in which a parking lever is driven by an electric actuator. The electric actuator includes: an electric motor which can be rotationally driven in a normal/reverse direction and of which an operation is controlled by a motor control unit in accordance with rotational loads; a converting mechanism which can convert a rotational movement into a linear movement and which can move the parking lever from a returning position to an operating position in accordance with normal rotation of the electric motor and which can move the parking lever from the operating position to the returning position in accordance with reverse rotation of the electric motor; and a load applying mechanism (a stopper, a friction material) which drives components of the converting mechanism and which applies predetermined rotational loads to the electric motor, in a state where the parking lever is moved from the operating position to the returning position in accordance with reverse rotation of the electric motor.