WO2004001254A1 - Frein a disque electrique de vehicule automobile - Google Patents

Frein a disque electrique de vehicule automobile Download PDF

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Publication number
WO2004001254A1
WO2004001254A1 PCT/EP2003/006486 EP0306486W WO2004001254A1 WO 2004001254 A1 WO2004001254 A1 WO 2004001254A1 EP 0306486 W EP0306486 W EP 0306486W WO 2004001254 A1 WO2004001254 A1 WO 2004001254A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
rotor
disc brake
motor vehicle
energy
Prior art date
Application number
PCT/EP2003/006486
Other languages
German (de)
English (en)
Inventor
Andreas GRÜNDL
Bernhard Hoffmann
Friedrich MÖRTL
Original Assignee
Compact Dynamics Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compact Dynamics Gmbh filed Critical Compact Dynamics Gmbh
Priority to AU2003246561A priority Critical patent/AU2003246561A1/en
Publication of WO2004001254A1 publication Critical patent/WO2004001254A1/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/24Electric or magnetic using motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/20Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/20Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40Screw-and-nut
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/58Mechanical mechanisms transmitting linear movement
    • F16D2125/582Flexible element, e.g. spring, other than the main force generating element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00Auxiliary mechanisms
    • F16D2127/02Release mechanisms

Definitions

  • the invention relates to an electric motor vehicle disc brake.
  • the invention relates to a disc brake which enables the construction of a so-called dry brake system, i.e. without hydraulic or brake fluid, which is pressed into a cylinder / piston arrangement by a master brake cylinder when the driver actuates the brake pedal via a brake fluid line system.
  • a sensor pedal operated by the driver is used to generate control signals for an electric drive which brings the friction linings with the brake disc into and out of frictional engagement.
  • a brake arrangement for a land vehicle with an electric motor is known, which is followed by a reduction gear, the output of which is connected to the input of a clamping / application device which acts on the friction linings of a brake arrangement.
  • the reduction gear is designed to be self-locking. With an actuating mechanism, the self-locking of the reduction gear can be canceled or produced, and an opening movement of the clamping / tightening device can be carried out in the sense of releasing the friction linings from a brake disc.
  • a spiral spring is wound around a tie rod, which acts as a torsion spring. When the pull rod moves axially, the charged spring-loaded mechanism can set a pinion in rotation.
  • Drawbar moves axially and at the same time the electric motor is actuated. No torque is transmitted to the spindle of the reduction gear. Rather, the spring accumulator is tensioned in the sense of an energy charge.
  • a parking brake device on a brake caliper of a hydraulically actuated service brake in which the parking brake device comprises an electric drive, which on at least one piston Service brake works.
  • a mechanical spring accumulator which can be loaded when the parking brake is actuated and has an integrated spring element.
  • the spring element is designed as a torsion spring element, is arranged in the piston and prestresses the piston in the direction of the brake disc.
  • DE 100 50 352 Cl shows an example of such an electric motor vehicle disc brake, with a brake caliper and an actuating unit arranged on the brake caliper, which acts on two friction linings which interact with one side surface of a brake disc and are arranged displaceably in the brake caliper.
  • the actuating unit has an electric motor and a gear unit, which is operatively arranged between the electric motor and the friction linings, for converting the rotational movement of the electric motor into a translational movement for the friction linings.
  • the invention is therefore based on the problem of providing an electrically actuable motor vehicle disc brake which in particular the limited, in modern the space available for passenger motor vehicles for wheel brakes is used efficiently and a comparable fail-safe behavior and the high level of reliability of conventional hydraulic brakes are achieved
  • This arrangement makes it possible to use a self-locking gear arrangement which can have a considerably higher reduction ratio than non-self-locking gear arrangements. This also reduces the torque required on the input side. Either the electric motor can be made more compact, or the torque and consequently the braking force can be increased accordingly with the same installation space.
  • the invention is based on the consideration that the energy store merely has the energy required for overcoming the friction in the transmission, the (de-energized) electric motor and in the other components (for example bearing of the brake pads, etc.) for a release movement of the Must provide friction linings away from the brake disc.
  • the - if necessary preloaded - energy store which is at least partially charged when the friction linings move towards the brake disc, in the event of a subsequent failure of the electric motor (i.e. when the friction linings are delivered) provides the energy for overcoming the holding moments and for the return movement by the amount of the brake clearance.
  • the arrangement according to the invention has the advantage that a release process of the friction linings caused by the electric motor away from the brake disc is supported by the release of energy from the energy store. In any case, the required installation space is reduced on the one hand by the arrangement according to the invention and at the same time the failure safety of the brake is guaranteed.
  • the energy store is designed in such a way that a rotational movement of the rotor in a first direction - preferably in the sense of a feed movement of the friction linings - supplies energy to the energy store by a predetermined first angular amount, and that the energy store extends as far as the first predetermined angular amount is exceeded unloads that another rotational movement in the first direction is enabled. This ensures that the energy store only absorbs a defined maximum energy, even if the rest position of the link of the drive unit acting on the friction linings gradually shifts - for example because of the wear of the friction linings.
  • the gear unit is designed as a spindle / nut arrangement or as a spindle / ball bushing arrangement, in which the rotor of the electric motor is connected in a rotationally fixed manner to the nut or the ball bearing bushing as the input side of the gear unit, and the spindle is connected to one Friction lining works.
  • the energy store is designed in such a way that when the rotor rotates in a second direction - preferably in In the sense of a restoring movement of the friction linings - the energy store is decoupled from the rotor and, when the rotor rotates in the first direction, the energy store is coupled to the rotor again.
  • This configuration allows the spindle of the gear unit to be completely returned to the starting position without the energy store interfering with this return movement.
  • the energy store is recharged as soon as the energy store is coupled to the rotor again.
  • the energy store is designed as a spiral spring arrangement, which is detachably coupled - directly or indirectly - to the rotor of the electric motor in the region of its first end and which is detachably coupled - directly or indirectly - to the stator in the region of its second end ,
  • the spiral spring has in the region of its second end a locking element which is oriented essentially radially outwards and which can be brought into or out of engagement with at least one locking device which is stationary relative to the stator.
  • this latching element can be the radially outwardly bent end of the spiral spring.
  • an end piece designed to match the geometric shape of the fixed latching can also be fastened in the region of the second end of the spiral spring.
  • the fixed latching can in particular have the shape of a recess.
  • the design of the second (outer) end of the spiral which in cooperation with the latching / recess ensures that an energy supply to the coil spring by turning its inner (first) end beyond a predetermined amount of energy causes a substantially radial, inward tensile force on the second end of the coil spring, so that the holding force of the outer end at the latching is exceeded and the outer end of the coil spring is pulled radially inward from the latching.
  • the result of this is that the coil spring relaxes again, expands radially and engages with its outer end in a further - or after a 360 ° movement of its outer end in the same - latching.
  • Excessive charging of the energy store that is, in the embodiment described above, an "overturning" of the spiral spring, is therefore effectively ruled out due to a correspondingly large number of rotations exerted on the inner end of the spiral spring.
  • the releasable coupling of the inner end of the spiral spring to the rotor or the nut or ball bushing of the gear unit driven directly or indirectly by the rotor is accomplished according to the invention in one embodiment in that the nut or ball bushing has at least one recess on the outer circumference , which can engage the inner end of the coil spring.
  • the recess is arranged along an imaginary chord through the circular (ring-shaped) cross section of the nut.
  • the chord encloses an essentially acute angle with an imaginary tangent at the point of intersection of the chord with the circumference.
  • the chord and the tangent form an imaginary arrow pointing in the direction of the first direction of rotation (infeed movement).
  • the electric motor with the spring accumulator is an invention which can be used independently of the above-described application of the electric motor vehicle disc brake.
  • Fig. 1 shows a schematic representation of an electric motor vehicle disc brake according to the invention in longitudinal section.
  • FIG. 2a, 2b show schematic top views of a segment of a stator with two stator windings in different embodiments.
  • FIG. 3 shows a schematic plan view of the rotor in the direction of arrows III in FIG. 1.
  • FIG. 1 shows an electrically actuable motor vehicle disc brake which has a brake caliper 10 which is essentially U-shaped in cross section and an electromechanical actuating unit 12 arranged on the brake caliper 10.
  • a brake caliper 10 which is essentially U-shaped in cross section and an electromechanical actuating unit 12 arranged on the brake caliper 10.
  • the two friction linings 14, 14 ′ are on both sides of a brake disk overlapped by the brake caliper 10 16 arranged and each interact with a side surface 16 ', 16 "of the brake disc 16 which is rotatably connected to an axle stub 18 only partially shown.
  • the friction linings 14, 14 ' are arranged in the brake caliper 10 towards the brake disc 16 or away from it.
  • this is a floating caliper arrangement in which one of the friction linings 14 can be brought into frictional engagement with the brake disk 16 by the actuating unit 12 directly and the other friction lining 14 'by the action of a reaction force applied by the brake caliper 10.
  • the actuating unit 12 is attached to the side of the brake caliper 10 and has an electric motor 20 and a gear in the form of a nut / spindle arrangement 22 arranged between the electric motor 20 and a friction lining 14.
  • This gear 22 serves to convert the rotary movement of the electric motor 20 into a longitudinal movement for the friction linings 14, 14 '.
  • the electric motor 20 has a stator 24 with two annular stator windings 26, 26 '. On the two end faces of each stator winding 26, 26 'there is a ring of pole shoes 28a, 28b; 28a '28b' arranged (see also FIG. 2a), which partially overlap the outer lateral surface of the respective stator winding 26, 26 'with their free ends 30a, 30b, 30a', 30b '.
  • the radially inner ends of the pole shoes 32a, 32b; 32a ', 32b' of a ring are connected to one another by a magnetically conductive, integrally molded ring (not designated further).
  • stator winding 26, 26 ' engage along the circumference of the respective stator winding 26, 26 'alternately into one another and each protrude laterally.
  • the two adjoining rings of pole shoes 28b, 28a ', which are arranged between the two stator windings 26, 26' are designed as uniform components which have an essentially T-shaped configuration (see FIG. 1 below).
  • Each stator winding 26, 26 ' is arranged on a ring 34, 34' made of sheet iron, which serves as a magnetic yoke.
  • the pole pieces are made of sintered iron powder, the grains of which are electrically and magnetically insulated from one another by a plastic coating.
  • the electric motor 20 also has a rotor 40 in the form of an annular cylinder 40a, on the side facing away from the brake caliper 10, an end wall 40b is formed.
  • the rotor 40 with its ring cylinder 40a engages around the stator windings 26, 26 'in the radial and in the axial direction.
  • the end wall 40b of the rotor 40 is coupled to the input side of the gear unit 22 in such a way that the end wall 40b is connected to the nut 22a of the nut / spindle 22 in a rotationally fixed (welded or form-fitting) manner.
  • the magnets which are aligned with the pole shoes surrounding a stator winding and which are arranged on the rotor in the circumferential direction adjacent to one another have an alternating magnetic orientation.
  • the nut 22a of the nut / spindle arrangement 22 is rotatably mounted in a flange 48 formed on the leg 10 'of the brake caliper 10, but is not displaceable in the axial direction.
  • the nut 22a is coupled to the spindle 22c via balls 22b, the spindle 22c moving in the longitudinal direction when the nut 22a rotates and thereby pushing the brake pad 14 toward the brake disk 16 or away from it via a pressure plate 52.
  • an energy store in the form of a spiral spring 50 is provided on the end face. wall 40b of the rotor 40 arranged.
  • the spiral spring 50 is detachably coupled to the rotor 40 of the electric motor 20. Since the rotor 40 is non-rotatably seated on the nut 22a, the coil spring 50 is mounted surrounding the nut 22a.
  • the nut 22a has a recess 60 into which the inner, angled end 52 of the spiral spring 50 can engage. The recess runs along an imaginary chord s through the circular cross section of the nut 22a or the recirculating ball bushing.
  • the chord includes an essentially acute angle W with an imaginary tangent T at the intersection of the chord s with the circumference of the nut 22a.
  • the chord s and the tangent T thus form an imaginary arrow which is oriented in the direction of the first direction of rotation R1. (see Fig. 3).
  • the spiral spring 50 is detachably coupled to the stator 24.
  • the spiral spring 50 is angled in the region of its second end 54 to form an essentially radially outward-oriented latching element 56 in order to come into or out of engagement with a latching 58 which has a sawtooth-shaped shape, with a shape in the first direction R1 tooth flank growing radially outwards. It can be seen that a large number of such catches 58 are arranged one behind the other along the inner circumference of an annular web 62.
  • a cover 64 for the spiral spring 50 (not shown in FIG. 1) is arranged on the ring web 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un frein à disque électrique de véhicule automobile, comprenant un étrier de frein (10), une unité d'actionnement (12) disposée contre l'étrier de frein, ainsi que deux garnitures de friction (14) qui sont disposées dans l'étrier de frein de façon à pouvoir être déplacées de manière limitée et qui coopèrent respectivement avec une surface latérale d'un disque de frein, ces garnitures de friction pouvant être mis en position de frottement avec le disque de frein (16) par l'intermédiaire de l'unité d'actionnement (12). Cette unité d'actionnement comprend un moteur électrique (20) qui est pourvu d'au moins un stator (24) et d'au moins un rotor (40), ainsi qu'une unité d'entraînement (22) qui est disposée fonctionnellement entre le moteur électrique et une garniture de friction et qui sert à convertir le mouvement de rotation du moteur électrique en un mouvement de translation des garnitures de friction. Selon l'invention, l'unité d'actionnement comporte un accumulateur d'énergie (50) qui emmagasine de l'énergie lorsque les garnitures de friction décrivent un mouvement vers une position fermée et qui favorise un mouvement d'ouverture de ces garnitures de friction par libération d'énergie.
PCT/EP2003/006486 2002-06-21 2003-06-18 Frein a disque electrique de vehicule automobile WO2004001254A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003246561A AU2003246561A1 (en) 2002-06-21 2003-06-18 Electric automotive disc brake

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002127828 DE10227828B4 (de) 2002-06-21 2002-06-21 Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse
DE10227828.8 2002-06-21

Publications (1)

Publication Number Publication Date
WO2004001254A1 true WO2004001254A1 (fr) 2003-12-31

Family

ID=29795845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/006486 WO2004001254A1 (fr) 2002-06-21 2003-06-18 Frein a disque electrique de vehicule automobile

Country Status (3)

Country Link
AU (1) AU2003246561A1 (fr)
DE (1) DE10227828B4 (fr)
WO (1) WO2004001254A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2905103A1 (fr) * 2006-08-25 2008-02-29 Renault Sas Dispositif de securite pour systeme de freinage electrique de vehicule automobile.
WO2012079969A1 (fr) * 2010-12-17 2012-06-21 Continental Teves Ag & Co. Ohg Frein à actionnement électromécanique et procédé permettant de faire fonctionner un frein à actionnement électromécanique
WO2016155716A1 (fr) * 2015-04-02 2016-10-06 Schaeffler Technologies AG & Co. KG Agencement d'actionneurs pour actionner une unité mécanique, de préférence pour actionner un embrayage
WO2017080548A1 (fr) * 2015-11-13 2017-05-18 Schaeffler Technologies AG & Co. KG Actionneur
CN109017734A (zh) * 2018-07-19 2018-12-18 浙江零跑科技有限公司 一种齿轮式epb失效驻车装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014205858A1 (de) * 2014-03-28 2015-10-01 Volkswagen Aktiengesellschaft Elektromechanischer Bremskraftverstärker
JP7047788B2 (ja) * 2019-01-28 2022-04-05 トヨタ自動車株式会社 電動ブレーキアクチュエータ

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US4784244A (en) * 1985-11-20 1988-11-15 Bendix France Electrical braking device for vehicles
DE19711382A1 (de) * 1997-03-19 1998-10-01 Daimler Benz Ag Feststellbremsvorrichtung an einem Bremssattel einer hydraulisch betätigbaren Betriebsbremse
DE19748318C1 (de) * 1997-10-31 1999-05-06 Lucas Ind Plc Bremsanordnung für ein Landfahrzeug
DE10050352C1 (de) * 2000-10-11 2002-01-03 Compact Dynamics Gmbh Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse
US6349801B1 (en) * 1998-02-20 2002-02-26 Lucas Industries Public Limited Company Electromechanically actuatable disk brake

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DE3410006A1 (de) * 1984-03-19 1985-09-19 Alfred Teves Gmbh, 6000 Frankfurt Verfahren zur steuerung einer bremsanlage fuer kraftfahrzeuge und vorrichtung zur durchfuehrung des verfahrens
US4865162A (en) * 1986-12-15 1989-09-12 Opus Acquisition Corporation Electrically actuated aircraft brakes
US4850457A (en) * 1987-10-07 1989-07-25 Allied-Signal Inc. Electrically actuated disc brake
US5348123A (en) * 1991-09-02 1994-09-20 Akebono Brake Industry Co., Ltd. Brake actuating apparatus for a vehicle
DE19543098C2 (de) * 1995-05-19 1997-03-20 Continental Ag Bremsaktor für elektrisch betätigbare Fahrzeugbremse
EP0847508B1 (fr) * 1995-09-21 2003-03-05 Lucas Industries Limited Ameliorations concernant des ensembles frein a disque a actionnement electrique pour vehicules
GB9522631D0 (en) * 1995-11-04 1996-01-03 Lucas Ind Plc Improvements in electrically-operated disc brake assemblies for vehicles
DE19851668A1 (de) * 1998-11-10 2000-05-11 Bosch Gmbh Robert Radbremsvorrichtung
DE19945703A1 (de) * 1999-09-23 2001-04-19 Knorr Bremse Systeme Zuspannvorrichtung für eine Fahrzeugbremse
DE10014226A1 (de) * 2000-03-22 2001-09-27 Bosch Gmbh Robert Elektromechanische Radbremsvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784244A (en) * 1985-11-20 1988-11-15 Bendix France Electrical braking device for vehicles
DE19711382A1 (de) * 1997-03-19 1998-10-01 Daimler Benz Ag Feststellbremsvorrichtung an einem Bremssattel einer hydraulisch betätigbaren Betriebsbremse
DE19748318C1 (de) * 1997-10-31 1999-05-06 Lucas Ind Plc Bremsanordnung für ein Landfahrzeug
US6349801B1 (en) * 1998-02-20 2002-02-26 Lucas Industries Public Limited Company Electromechanically actuatable disk brake
DE10050352C1 (de) * 2000-10-11 2002-01-03 Compact Dynamics Gmbh Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2905103A1 (fr) * 2006-08-25 2008-02-29 Renault Sas Dispositif de securite pour systeme de freinage electrique de vehicule automobile.
WO2012079969A1 (fr) * 2010-12-17 2012-06-21 Continental Teves Ag & Co. Ohg Frein à actionnement électromécanique et procédé permettant de faire fonctionner un frein à actionnement électromécanique
US9677632B2 (en) 2010-12-17 2017-06-13 Continental Teves Ag & Co. Ohg Electromechanically actuatable brake and method for operating an electromechanically actuatable brake
WO2016155716A1 (fr) * 2015-04-02 2016-10-06 Schaeffler Technologies AG & Co. KG Agencement d'actionneurs pour actionner une unité mécanique, de préférence pour actionner un embrayage
WO2017080548A1 (fr) * 2015-11-13 2017-05-18 Schaeffler Technologies AG & Co. KG Actionneur
CN109017734A (zh) * 2018-07-19 2018-12-18 浙江零跑科技有限公司 一种齿轮式epb失效驻车装置
CN109017734B (zh) * 2018-07-19 2020-01-17 浙江零跑科技有限公司 一种齿轮式epb失效驻车装置

Also Published As

Publication number Publication date
DE10227828A1 (de) 2004-01-29
AU2003246561A1 (en) 2004-01-06
DE10227828B4 (de) 2007-06-06

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