Abstract: A compact drive unit for actuating parking brakes is provided The drive unit has a reduction gear that is formed by a two-stage belt drive, in combination with a drive motor that is made up of a brushless direct current motor The two-stage belt drive preferably consists of two toothed belt drives functionally arranged in series; the direct current motor preferably has an external rotor with a rare-earth magnetic ring.

Abstract: The belt retractor has a belt spool (12) mounted rotatably in a frame (10) and a drive motor (28) coupled to the belt spool (12) via a belt drive (14, 24, 22). This drive motor (28) is a brushless direct current motor with an internal rotor that has a starting torque of at least 2 Nm.

Abstract: The invention relates to a drive for a flap provided on a vehicle, especially an engine hood. The drive comprises an electric motor, an actuation shaft that is connected to the flap, and a reduction gear by means of which the rotor of the electric motor is coupled to the actuation shaft. The drive further comprises an energy accumulator by means of which the actuation shaft can be driven independently of the electric motor. The reduction gear is configured in such a way that the actuation shaft is driven in a rotational direction only by the energy accumulator and the electric motor drives the actuation shaft in an opposite rotational direction, thereby supplying to the energy accumulator an energy that is needed to drive the actuation shaft in the rotational direction. The invention further relates to a pedestrian protection means provided on a vehicle and equipped with such a drive.

Abstract: The invention relates to an Ultrasound Sensor, especially for a vehicle and the passenger compartment thereof, comprising a can-shaped housing, a housing base, a housing closure and a sensor element arranged at the base inside the housing, and in the area of the housing closure there is arranged a contact device which is attachable, in locally fixed fashion, inside housing; the contact device presenting, in the direction of the longitudinal axis, a penetrating recess and being connected, in electrically conductive fashion, in at least one contact point with at least one electrode of the sensor element by means of thick-stranded wire. The invention also relates to a method for producing the Ultrasound Sensor.

Abstract: A park brake system for vehicles is provided that has an actuator with an electric drive motor and an electronic control unit provided with an interface. A reduction gear has an input connected to the output of the electric motor and an output member for connection to mechanical brakes of the vehicle. A command unit has a transducer connected to the electronic control unit. The transducer converts position indication signals into appropriate digital signals to enable the control unit to generate corresponding brake control commands. With appropriate control signals from the electronic control unit, the mechanical brake system can thus reflect positional brake commands from the command unit within an operating range from OFF to ON, including partial activation conditions of the park brake.

Abstract: A drive for a hood on a motor vehicle, in particular an engine hood, which is movable between a closed position and a lifted position that is abruptly achieved in the case of an accident. The drive comprises a drive unit having an electric drive motor and being effective between a vehicle structure and the hood. The drive motor moves the hood into the lifted position in the case of an accident.

Abstract: An actuator for the change speed shaft of a motor vehicle automatic transmission comprises a housing, an actuating shaft rotatably mounted in the housing, an electric motor, a reversible, low-loss reduction gearing by which the rotor of the electric motor is directly coupled to the actuating shaft, a pretensioned spiral spring forming an energy storing means by which the actuating shaft may be driven into the parking position independently of the electric motor, an electronic controller for driving the electric motor as a function of control signals, a coupling means for coupling the actuating shaft to the change speed shaft of the automatic transmission. Rotation of the actuating shaft by the coupling means is converted into angles of rotation of the change speed shaft which correspond to the control signals. The actuator replaces a conventional gearshift lever on an automatic transmission.

Abstract: A park brake system for vehicles is provided that has an actuator with an electric drive motor (36, 38) and an electronic control unit. A reduction gear has an input connected to the output of the electric motor and a pull force output member (56) for connection to mechanical brakes of the vehicle. The reduction gear has an input connected to the output of the electric motor. A command unit is connected to the electronic control unit. The reduction gear comprises a first reduction train and a second reduction train. The first reduction train includes a worm gear (42, 44) and the second reduction train includes a threaded spindle (46) and a screw nut (50) engaged with the spindle (46). The worm gear connects the spindle (46) to the output of the electric motor (36, 38). The pull force output member (56) is connected to the screw nut (50). The two-step reduction gear ensures the required high rate of reduction to generate high pull forces with a relatively compact electric motor.

Abstract: A seat belt retractor has a retractor frame, a belt spool rotatably mounted in the frame, an electric drive motor, a reduction belt gear with a toothed belt connecting the electric motor permanently with the belt spool, and a winding spring functionally arranged between the frame and the belt spool, permanently biasing the belt spool with a winding moment. The electric motor is controlled to either counteract or assist the winding spring.

Abstract: A belt retractor for an occupant restraint system comprises a frame, a belt reel rotatably mounted in the frame, an electric motor drive coupled to the belt reel, a locking mechanism for selectively blocking the belt reel, and a vehicle-sensitive sensor. The locking mechanism is actuated by an actuator. An electronic control unit is provided with an input interface and an output interface. The vehicle-sensitive sensor is connected to the input interface, and the actuator and the electric motor drive are connected to the output interface.

Abstract: The invention relates to a housing for an electronics unit, especially for an airbag control device, whereby at least the metal walls of the housing are provided with a moisture repellent coating. The inventive housing is made of bent and interconnecting sheet metal elements which are extrusion-coated with plastic on at least one side.

Abstract: A drive unit for fans in vehicles has a brushless DC motor and an electronic actuation system. The electronic actuation system is surrounded by a housing made of plastics that supports the DC motor. The housing has an integrally molded bearing sleeve for mounting the rotor of the DC motor, which is configured as an external rotor. The upper part of the housing is the only supporting component of the drive unit.

Abstract: A housing for an electronic monitoring device on a vehicle part such as a lead accumulator comprises a metallic, load-bearing baseplate and an injection molded, generally parallelepipedal housing body encapsulating the baseplate. The baseplate projects out of the housing body on at least one side with a cantilevered attachment section.

Abstract: A park brake system for vehicles is provided that has an actuator with an electric drive motor and an electronic control unit provided with an interface. A reduction gear has an input connected to the output of the electric motor and an output member for connection to mechanical brakes of the vehicle. A command unit has a transducer connected to the electronic control unit. The transducer converts position indication signals into appropriate digital signals to enable the control unit to generate corresponding brake control commands. With appropriate control signals from the electronic control unit, the mechanical brake system can thus reflect positional brake commands from the command unit within an operating range from OFF to ON, including partial activation conditions of the park brake.

Abstract: The automotive electric power supply includes a rechargeable battery and a distributor comprising an input for one battery terminal and several outputs furnishing the battery voltage for various consumers. Arranged between the input for one battery terminal and the outputs are semiconductor switches driven by a digital controller. The controller has an input interface for sensor signals representing operating parameters. The power supply is smart in ensuring that electrical energy is furnished to the various consumers in the vehicle only as required.

Abstract: The driving device has a rotatable drive disc (16) that is coupled to a motor (10) and, arranged coaxially with the drive disc, a locking disc (20) that can be rotated to a limited extent relative to the drive disc. The locking disc has detent teeth on its outer circumference. A pawl (30), is pivotally mounted on a stationary axis. The drive disc (16) is provided with a recess (28) on its outer circumference. The outer circumference of the drive disc extends radially beyond the tips of the detent teeth. The recess has a bottom of approximately the same radial depth as the gaps of the detent teeth. Together with the outer circumference of the drive disc (16), the recess (28) forms a cam on which the tip of the pawl (30) slides.

Abstract: The proposed system for safe high-temperature operation of a flash memory is suitable, more particularly, for use in automotive technology, for example, for a transmission controller, the flash memory being programmed prior to use at high temperatures such that each data set in the flash memory is saved redundant. The system is provided with a temperature sensor for sensing the temperature characterizing the temperature of the flash memory, and with a control unit connected to the temperature sensor and the flash memory. The control unit, including a timer, is configured such that it receives the temperature signals from the temperature sensor and is able to establish an accumulated heat load value of the flash memory by integrating the resulting temperature values versus time.

Abstract: The invention relates to a drive for a flap provided on a vehicle, especially an engine hood. The drive comprises an electric motor, an actuation shaft that is connected to the flap, and a reduction gear by means of which the rotor of the electric motor is coupled to the actuation shaft. The drive flier comprises an energy accumulator by means of which the actuation shaft can be driven independently of the electric motor. The reduction gear is configured in such a way that the actuation shaft is driven in a rotational direction only by the energy accumulator and the electric motor drives the actuation shaft in an opposite rotational direction, thereby supplying to the energy accumulator an energy that is needed to drive the actuation shaft in the rotational direction. The invention further relates to a pedestrian protection means provided on a vehicle and equipped with such a drive.

Abstract: The torque developed at a belt shaft of a belt retractor coupled to an electric motor via a drive belt is controlled so as to avoid a hysteresis. For this purpose, the direction of rotation of the belt shaft is detected and, depending on the direction of rotation as detected, the electric current supplied to the electric motor is changed from a first value to a second value that is different from the first value by an amount required to compensate for hysteresis.

Abstract: An actuator for the change speed shaft of a motor vehicle automatic transmission comprises a housing, an actuating shaft rotatably mounted in the housing, an electric motor, a reversible, low-loss reduction gearing by which the rotor of the electric motor is directly coupled to the actuating shaft, a pretensioned spiral spring forming an energy storing means by which the actuating shaft may be driven into the parking position independently of the electric motor, an electronic controller for driving the electric motor as a function of control signals, a coupling means for coupling the actuating shaft to the change speed shaft of the automatic transmission. Rotation of the actuating shaft by the coupling means is converted into angles of rotation of the change speed shaft which correspond to the control signals. The actuator replaces a conventional gearshift lever on an automatic transmission.