EP2536610A1 - Unité d'actionnement pour un frein à disque à actionnement électromécanique - Google Patents

Unité d'actionnement pour un frein à disque à actionnement électromécanique

Info

Publication number
EP2536610A1
EP2536610A1 EP11703419A EP11703419A EP2536610A1 EP 2536610 A1 EP2536610 A1 EP 2536610A1 EP 11703419 A EP11703419 A EP 11703419A EP 11703419 A EP11703419 A EP 11703419A EP 2536610 A1 EP2536610 A1 EP 2536610A1
Authority
EP
European Patent Office
Prior art keywords
bearing
brake
measuring device
force
deformation body
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11703419A
Other languages
German (de)
English (en)
Inventor
Jens Bachon
Holger Von Hayn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
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 Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP2536610A1 publication Critical patent/EP2536610A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005—Force, torque, stress or strain
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/50—Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing

Definitions

  • the invention relates to an actuating unit for an electromechanically actuated disc brake according to Oberbeg ⁇ reef of claim. 1
  • an electromechanically actuated disc brake which consists of a floating caliper so ⁇ as a saddle arranged on the actuating unit with an electric motor and a roller screw.
  • a force measuring device is arranged, by means of which the clamping force of the brake can be determined, wherein the force measuring ⁇ device is arranged in a bore of the threaded spindle.
  • WO 2004/083670 AI discloses a generic Actuate ⁇ tion unit for an electromechanically actuated disc brake for motor vehicles with an electric motor and operatively arranged between the electric motor and an actuator first reduction gear.
  • a force measuring element can be arranged in the first reduction gear. More detailed information on the arrangement and design of the force measuring element are not disclosed.
  • the present invention is based on the object 1, an actuating unit for an electromechanically actuated Disc brake of the type mentioned felicitzustel ⁇ len, which has a high accuracy of the clamping force determination and thereby manufacturing technology is as simple and inexpensive.
  • the invention is based on the idea that in the force flow between the threaded spindle and the caliper, a rolling bearing and a force measuring device with at least one deformation body, which deforms under the action of the force to be determined, are arranged, wherein the threaded ⁇ spindle on the rolling bearing on the Deformation body of
  • the rolling bearing is designed as a needle bearing.
  • the achievable residual clamping force significantly ver Ringert ⁇ upon failure of the electromechanically actuatable brake.
  • the rolling bearing is designed as a tapered roller bearing or a ball bearing. Due to the fact that taper roller bearings or ball bearings have a lower coefficient of friction, the achievable residual clamping force can be further reduced.
  • At least part of the deformation body of the Kraftmesseinrich ⁇ tion is formed as at least a part of the rolling bearing. Due to this "double use" of the deformable body is a clotting ⁇ Gere overall length can be achieved. Further, the thereby resulting ER aimed at reducing components to optimize costs. As a result of the reduced number of components, any contour deviations occurring at the boundary surfaces occur less frequently or have a smaller influence, which increases the accuracy of the force measurement. Particularly preferably, a part of the deformation body of the force measuring device and a part of the rolling bearing are integrally formed.
  • a part of the deformation body of Kraftmessein ⁇ direction is formed as a bearing disc of the needle bearing.
  • a part of the deformation body of the force ⁇ measuring device is preferably designed as a ball bearing ring of the ball bearing or a tapered roller bearing ring of the tapered roller bearing.
  • strain gauges For measuring the deformation of the deformation body, which is a measure of the brake application force, strain gauges, e.g. in the form of strain gauges, arranged.
  • An advantage of the invention is that an increased Wegig ⁇ ness of the clamping force determination is achieved. In this case a production-technical simplification and / or production ⁇ tion cost reduction is achieved.
  • Another advantage of the invention is that a shorter overall length is achieved by a combination of force measuring device and bearing. Due to the smaller number of components, the manufacturing costs for the operating unit are also reduced. Furthermore, the influence of manufacturing inaccuracies is reduced. The latter increases the accuracy of the force measuring device and thus the determination of the clamping force.
  • the reduction gear as a WälzSystemgewinde- drive, in particular ball screw, formed with a drivable by means of the electric motor threaded spindle.
  • the actuator unit comprises a Zvi ⁇ rule the electric motor and a part of the drive Unterschge ⁇ disposed second reduction gear, for example, Ro ⁇ tations-rotation gear.
  • Fig. 1 is a known electromechanically actuated
  • FIG. 2 is a partial view of a first embodiment of an actuating unit according to the invention for an electromechanically actuated disc brake
  • FIG. 3 partial view of a second embodiment of the invention actuating unit for a Electromechanically actuated disc brake
  • Fig. 4 is a partial view of a third embodiment of an actuating unit according to the invention for an electromechanically actuated disc brake.
  • Fig. 1 shows a known from WO 2004/083670 AI electro ⁇ mechanically actuated brake
  • the brake caliper shown in section is slidably mounted in a stationary holder, not shown.
  • a pair of friction linings 4 and 5 are disposed in the caliper so as to face the left and right side surfaces of a brake disk 6. While the first friction lining 4 by means of a Betchanistsele ⁇ member 7 can be brought by an operating unit directly connected to the brake ⁇ disc 6 in engagement, the second friction lining 5 is formed by the action of an applied during actuation of the arrangement by the brake caliper reaction force against the gege ⁇ nüberode side surface the brake disc 6 pressed.
  • the operating unit that is mounted on the brake caliper by means not shown Fixed To ⁇ restriction means has a modular structure and consists essentially of four
  • independent subassemblies or modules namely of a driving unit 1, a first friction lining 4 actuating the first reduction gear unit 2, which converts the same time a Rotati ⁇ onsterrorism into a translational movement, one operatively connected between the driving unit 1 and the first reduction ⁇ transmission 2 second Reduction gear ⁇ 3 and an electronic control unit 8.
  • the drive unit consists of an electric motor 1, the stator 9 is arranged immovably in a motor housing 12 and the rotor 10 is connected to a shaft 13, which operatively connected to the second reduction gear 3 is.
  • the first reduction gear 2 is designed as a Kugelge ⁇ wind operation, which is arranged in a gear housing 14 ⁇ .
  • the ball screw consists of a threaded nut 16 and a threaded spindle 17, wherein between ⁇ tween the threaded nut 16 and the threaded spindle 17 a plurality of unspecified balls are arranged, which rotate during a rotational movement of the threaded spindle 17 and the threaded nut 16 in an axial or move translational motion.
  • the threaded nut 16 is made in two parts and consists of a first part 18, which forms the Be ⁇ plannedungselement 7 mentioned above, and a second part 19, in which a return region is formed for the balls, in which the balls without loading at the beginning of can run back into a supporting career.
  • the second reduction gear ⁇ be 3, for example, is designed as a planetary gear.
  • the arrangement is such that the rotor 10 or the shaft 13 of the electric motor with the interposition of the second reduction gear 3, the threaded spindle 17 rubs ant ⁇ ⁇ while the first part 18 of the threaded nut 16 is supported on the first friction lining 4.
  • the coupling of the first reduction gear 2 to the second reduction gear 3 he follows ⁇ by means of a transverse force-free plug-in connection, which carries the reference numeral 20 and which can be performed, for example, as a notched toothing ⁇ .
  • the bearing of the rotor 10 serve two radial bearings 21, 22, which are arranged in the motor housing 12.
  • Fig. 2 shows schematically a partial view of a first Aus ⁇ exemplary embodiment of an actuating unit according to the invention for an electromechanically actuated disc brake.
  • the area of the reduction gear 2, which converts a rotational movement into a translational movement, and its support on the caliper 50 is shown enlarged.
  • electric motor 1 (not shown) driven Ge ⁇ threaded spindle 17 is supported via a needle bearing 33, and a force-measuring device 30 to the brake caliper 50 from.
  • Needle bearing 33 is disposed between threaded spindle 17 and force measuring device 30 and serves inter alia, the power transmission between the spindle 17 and a deformation body 35 of the force measuring device 30.
  • Needle bearing 33 includes bearing discs 31 and 32.
  • Force measuring device 30 is supported on the brake caliper housing 50, according to the embodiment in FIG. 2 via a further component 34, and in particular fixed, insbeson ⁇ particular rotation, on the caliper (housing) 50 is arranged.
  • Bearing ⁇ disc 32 and the deformed body 35 of the force measuring device 30 are hardened.
  • a needle bearing 33 is advantageous due to the small available space.
  • Fig. 3 shows schematically a partial view of a second Aus ⁇ exemplary embodiment of an actuating unit according to the invention for an electromechanically actuated disc brake.
  • ⁇ at the arranged between the threaded spindle 17 and force measuring device 40 rolling bearing is designed as a ball bearing 42.
  • the rolling bearing may be designed as a tapered roller bearing (not shown).
  • a ball bearing 42 or a Kegelrollenla ⁇ gers instead of a needle bearing 33 is particularly advantageous because ball or tapered roller bearings 42 permit a lower coefficient of friction due to design. Due to the design needle roller bearings 33 have a higher coefficient of friction, especially when loaded with axial ⁇ forces.
  • a ball or tapered roller bearing 42 thus, the advantage can be achieved that, when ei ⁇ nem failure of the electro-mechanically actuated (operation) brake, the residual clamping force to be set can be reduced to a Mi ⁇ nimum.
  • a ball bearing 42 offers the further advantage in the production very to be inexpensive.
  • the force measuring device is advantageously designed such that a part of the ball or tapered roller bearing ⁇ or the ball or tapered roller bearing itself the deformation body 43 of the force measuring device 40 forms.
  • ball bearing 42 is arranged between threaded spindle 17 and force measuring device 40, wherein ball bearing 42 serves to transmit power between threaded spindle 17 and force measuring device 40.
  • Force measuring device 40 is supported on the caliper ⁇ housing 50, according to the embodiment of a wide ⁇ res component 44.
  • Ball bearing 42 comprises a first bearing ring 41 and a second bearing ring 43, between which rolling balls 45 are arranged.
  • Force measuring device 40 is designed such that at least part of its deformation ⁇ ment body 43 forms part of the ball bearing 42, namely the outer ball bearing ring 43 of the ball bearing 42nd
  • Fig. 2 In an operation unit according to the firstticiansbei ⁇ game (Fig. 2) are bearing disc 32 and force measuring device 30, at least at low clamping forces, only over an annular edge in contact (line contact of the Kraftmessein ⁇ direction 30). Due to the manufacturing technology of the bearings, bearing washers 31, 32 and the deformation body 35 are small contour deviations (with respect to parallelism, flatness) in the range of less ⁇ possible, which cause the deformation of the deformation body 35 of the force measuring device 30 is not homogeneous, and thus the output signal having deviate ⁇ deviations from the ideal characteristic. This may possibly lead to a slightly reduced accuracy of the clamping force measurement lead.
  • the residual clamping force can be reduced in case of failure of the electromechanically actuated brake, the construction ⁇ length remains the same or even reduced compared to the use of a needle bearing. Furthermore, the influence of contour inhomogeneities is reduced by the reduced number of components (by at least partial "integration” or “combination” of bearing 42 and force measuring device 40), whereby the accuracy of the force measuring device is increased.
  • Fig. 4 schematically shows a partial view of a third example of a guide from ⁇ operating unit according to the invention for an electromechanically operable disc brake.
  • ⁇ at the arranged between the threaded spindle 17 and force measuring device 60 rolling bearing is designed as a needle bearing 63.
  • Needle bearing 63 comprises a first bearing disk 61.
  • Verform stresses 65 of the force measuring device 60 is formed such that it serves as a second bearing disc 65 for needle roller bearings 63.
  • a needle bearing 63 is advantageous because of the low for Availability checked ⁇ supply installation space.
  • the deformation element 65 of the force-measuring device 60 By the execution of the deformation element 65 of the force-measuring device 60 as a part of the needle bearing (bearing plate), the number of components is verrin ⁇ Gert, whereby the influence of Konturinhomogenticianen verrin- will be. Thus, the accuracy of the force measuring device 60 can be increased.
  • Force measuring device 30, 40, 60 comprises, for example, a deformation body, for example a deformation ring or a disc made of steel, on which strain gauges, for example made of silicon, are arranged for deformation detection.

Landscapes

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

Abstract

L'invention concerne une unité d'actionnement pour un frein à disque à actionnement électromécanique, notamment pour des véhicules à moteur, montée sur un étrier de frein (50) dans lequel deux garnitures de frein interagissant respectivement avec une surface latérale d'un disque de frein sont logées de façon à coulisser de manière limitée. Une des garnitures de frein peut être amenée en prise avec le disque de frein directement par l'unité d'actionnement au moyen d'un élément d'actionnement, et l'autre garniture de frein peut être amenée en prise avec le disque de frein sous l'effet d'une force de réaction produite par l'étrier de frein (50). L'unité d'actionnement comporte un moteur électrique et un engrenage réducteur disposé en terme d'action entre le moteur électrique et l'élément d'actionnement, comportant une broche filetée (17) pouvant être entraînée par le moteur électrique, s'appuyant axialement sur l'étrier de frein (50). Un palier à roulement (42) et un dispositif de mesure de force (40) comportant un corps de déformation (43), se déformant sous l'effet de la force à mesurer, sont disposés dans le flux de forces entre la broche filetée (17) et l'étrier de frein (50), la broche filetée (17) s'appuyant sur le corps de déformation du dispositif de mesure de force (40) au moyen du palier à roulement (42).
EP11703419A 2010-02-16 2011-02-03 Unité d'actionnement pour un frein à disque à actionnement électromécanique Withdrawn EP2536610A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010001986 2010-02-16
DE102011002565A DE102011002565A1 (de) 2010-02-16 2011-01-12 Betätigungseinheit für eine elektromechanisch betätigbare Scheibenbremse
PCT/EP2011/051503 WO2011101247A1 (fr) 2010-02-16 2011-02-03 Unité d'actionnement pour un frein à disque à actionnement électromécanique

Publications (1)

Publication Number Publication Date
EP2536610A1 true EP2536610A1 (fr) 2012-12-26

Family

ID=44317411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11703419A Withdrawn EP2536610A1 (fr) 2010-02-16 2011-02-03 Unité d'actionnement pour un frein à disque à actionnement électromécanique

Country Status (6)

Country Link
US (1) US20120298455A1 (fr)
EP (1) EP2536610A1 (fr)
KR (1) KR20130004295A (fr)
CN (1) CN102762426B (fr)
DE (1) DE102011002565A1 (fr)
WO (1) WO2011101247A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP2852517B1 (fr) 2012-04-20 2019-05-15 IPGate AG Dispositif de palier d'un entraînement coaxial
DE102012216588A1 (de) * 2012-09-17 2014-03-20 Continental Teves Ag & Co. Ohg Kombinierte Fahrzeugbremse
US9757793B2 (en) * 2013-06-20 2017-09-12 Goodrich Corporation Reinforced electromechanical actuator housing
KR101860581B1 (ko) * 2013-07-26 2018-05-23 주식회사 만도 전동식 디스크 브레이크 장치
ES2850203T3 (es) 2017-06-08 2021-08-26 Ims Gear Se & Co Kgaa Disposición de engranaje de ruedas planetarias, en particular para un freno de servicio electromecánico o un freno de estacionamiento electromecánico para un vehículo de motor
DE102019004673B4 (de) * 2019-07-07 2021-08-12 Haldex Brake Products Ab Bremsbetätigungsmechanismus und Scheibenbremse sowie Herstellungsverfahren
DE102021212879A1 (de) 2021-11-16 2023-05-17 Continental Automotive Technologies GmbH Elektromechanische Bremsvorrichtung
DE102022123155A1 (de) * 2022-09-12 2024-03-14 Zf Active Safety Gmbh Bremsaktorbaugruppe und Verfahren zur Herstellung einer Bremsaktorbaugruppe
DE102023122191A1 (de) * 2023-08-18 2025-02-20 Zf Active Safety Gmbh Bremsaktuatoreinheit, Dehnungssensor für eine solche Bremsaktuatoreinheit sowie elektromechanische Bremse
DE102024130284A1 (de) * 2024-10-18 2026-04-23 Schaeffler Technologies AG & Co. KG Wälzgewindetrieb für einen Bremsaktuator sowie Verfahren zur Montage und zum Betrieb eines Gewindetriebs

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Also Published As

Publication number Publication date
WO2011101247A1 (fr) 2011-08-25
KR20130004295A (ko) 2013-01-09
CN102762426B (zh) 2016-02-03
US20120298455A1 (en) 2012-11-29
CN102762426A (zh) 2012-10-31
DE102011002565A1 (de) 2011-08-18

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