Papst-Motoren Gmbh & Co Kg

Papst-Motoren Kg

Papst Licensing Gmbh

Papst Licensing Gmbh & Co. Kg

Trw Automotive Electronics & Components Gmbh & Co. Kg

Papst Licencing Gmbh

Johann Von Der Heide

Dieter Elsaesser

Rolf Muller

Dieter Elsasser

Georg F Papst

Heinrich Cap

Cornelius Peter

Alfred Merkle

Fritz Schmider

Michael Hermann

Helmut Hans

Uwe Muller

Uwe Mueller

Micheal Hermann

Klaus Albrecht

Dieter Els&auml;sser

Benno Doemen

Michael B Petach

Bernhard Schuh

Daniel Baltrusch

Ega Tschiskale

Hans-Dieter Papst

Hinrich Cap

Rolf M/u/ Ller

Ernst-Moritz Korner

Rolf Mueller

Dieter Elsässer

Rolf Müller

Rolf M&uuml;ller

An arrestable tensioning device, in particular for a parking brake system, is described. The tensioning devicecomprises an actuating device, a tensioning elementcoupled to the actuating devicefor executing a tensioning motion, and a releasable arresting devicefor the tensioning element. The arresting devicehas a first contourcoupled to the tensioning element, as well as an arresting element, which for arresting the tensioning elementinteracts with the first contour, i.e. for example, is brought into engagement with the first contour. A lagging elementis provided, which upon a reversal of motion of the first contourfollows on after a time delay and in said case is movable relative to the first contourback and forth between a first relative position enabling e.g. an engagement of the arresting elementinto the first contourand a second relative position preventing an engagement of the arresting elementinto the first contour

Arrestable tensioning device, in particular for a parking brake system

A brushless direct current motor is energized by a power stage. Switches of the power stage are selectively switched by an electronic control device. In order to determine the correct commutation pattern, without using rotor position indicators such as Hall effect devices, the control device is arranged to sample the power fed to the motor. The samples, each responsive to a test signal or normal energization pulses received by the motor, in a ordered sequence define an analogue function whose parameters can be determined by mathematical analysis. The analysis applied to the samples derives the necessary commutation information and the energization signals in a rapid manner by employing a vector or complex number addition based on functions dependent on variable inductance in the operation of the motor.

Apparatus and method for controlling brushless electric motors and position encoders and indicating position thereof

An electromotive drive is provided, especially for the pump of a power-assisted steering system of a motor vehicle. The drive includes a housing () with a bearing journal () in which the shaft () of a rotor () is rotationally mounted. The drive also includes a stator () having drive windings. The bearing journal () extends through said stator and supports it. The stator () is supported by the bearing journal (), substantially in the transversal direction only. The stator () is coupled with the remaining housing () in a rotationally fixed manner, so as to transmit the engine torque. The arrangement dramatically reduces disturbing noises which occur especially when the motor is operated at full load and which are caused by relatively high-frequency torque variations.

Electromotive drive system for use with a pump of a power-assisted steering system in a motor vehicle

A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.

Disk storage device having an undercut hub member

Disk storage device having a hub sealing member feature

Disk storage device having a sealed bearing tube

Disk storage device having a radial magnetic yoke feature

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.

Drive unit for a fan in a vehicle

The driving device has a rotatable drive disc ( ) that is coupled to a motor ( ) and, arranged coaxially with the drive disc, a locking disc ( ) 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 ( ), is pivotally mounted on a stationary axis. The drive disc ( ) is provided with a recess ( ) 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 ( ), the recess ( ) forms a cam on which the tip of the pawl ( ) slides.

Driving device

Disk storage device having contamination seals

A disk storage drive is provided with a brushless drive motor having a stator with a winding. An external rotor coaxially surrounds the stator and is spaced therefrom by a substantially cylindrical air gap. The rotor includes a permanent magnet and a soft magnetic yoke. A hub is provided that is concentric to the yoke and is connected to the rotor for rotation therewith. The hub has a disk mounting portion on its outer peripheral surface that can be passed through the central opening of a standardized storage disk for mounting the storage disks for rotation therewith. At least half of the axial longitudinal dimension of the stator winding and the rotor magnet interacting therewith is housed within the disk mounting portion of the hub. The hub is made from a non-ferromagnetic material that is suitable for storage drive clean chamber use after dimensional finishing of the hub.

Disk storage device having a detachable coupling ring in the hub

A disk storage device including a housing surrounding a clean chamber, at least one storage disk having a central opening, at least one data head mounted on the housing for movement in operative relationship with the disk within the clean chamber, and motor elements for rotating the disk within the clean chamber. The motor elements include a rotatable member positioned within the clean chamber. The rotatable member has a cylindrical outer surface portion that extends into the central opening of the storage disk and is supported by a shaft and bearing system. A stator including magnetically active parts is mounted on a support member, which also supports the shaft and bearing system. The stator has a magnetic flux-producing section having poles positioned on the same side of the support member as the rotatable member. The rotatable member includes a cylindrically-shaped magnetic flux-producing and conducting element including a ferromagnetic ring and an annular permanent magnet spaced from the poles of the stator by a substantially cylindrical air gap. Further, the outside diameter of the cylindrically-shaped magnetic flux-producing and conducting element is larger than the diameter of the central opening of the storage disk.

Disk storage device, with hub and drive motor rotor features

A disk storage drive for a disk storage device having a clean chamber for a storage disk having a central opening is provided with a brushless drive motor. The drive motor includes a stator and a winding on the stator and further includes a shaft aligned with the rotation axis of said motor, and a magnetically conducting member supported for rotation about the rotation axis and having an inner wall coaxially surrounding the stator. A magnet fixed to the inner wall of the magnetically conducting member is radially spaced from the stator. The disk storage device further includes a hub positioned within the clean chamber and contiguous with the magnetically conducting member so that the hub and the magnetically conducting member together form an outer rotor of the drive motor. The outer rotor has a radially extending flange having a surface which supports said storage disk. A support member contiguous with a portion of a partition of the clean chamber supports the shaft and has a recess receiving a portion of said radially extending flange, whereby the spacing between opposing walls of the clean chamber is reduced. Further, the magnetically conducting member comprises magnetic shield means at least peripherally surrounding the stator and at one end radially extending to the bearing and shaft assembly, and the rotor has a radially extending inner wall spaced closely adjacent to said stator windings, whereby said disk storage device is compact in a direction along said disk rotation axis while said motor magnet is axially separated from the plane of said storage disk.

Spin drive motor for a disk storage device

A disc drive having a housing which encloses a clean room that is provided with a brushless DC drive motor having an external rotor and three pole shoes on a substantially ring-shaped stator for each two pole on the rotor. The stator winding is commutated by a three-phase commutation network in such a fashion that first, second and third networks in the stator winding are cyclically connected to an external DC source in accordance with rotor position. Each of the networks comprises at least one stator coil wrapped around a neck of a single corresponding one of the pole shoes.

Disc drive having a brushless DC drive motor with an external rotor for

A brushless DC drive motor with an external rotor has three pole shoes on a substantially ring-shaped stator for each two poles on the rotor. The stator winding is commutated by a three-phase commutation network in such a fashion that first, second and third networks in the stator winding are cyclically connected to an external DC source in accordance with rotor position. Each of the networks comprises at least one stator coil wrapped around a neck of a single corresponding one of the pole shoes.

Brushless DC drive motor with external rotor for use in disc drives and

Growing community of inventors

Schramberg, Germany

Johann Von Der Heide