WO1999035019A1 - Brake device for vehicles - Google Patents

Brake device for vehicles Download PDF

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Publication number
WO1999035019A1
WO1999035019A1 PCT/DE1998/002442 DE9802442W WO9935019A1 WO 1999035019 A1 WO1999035019 A1 WO 1999035019A1 DE 9802442 W DE9802442 W DE 9802442W WO 9935019 A1 WO9935019 A1 WO 9935019A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
wheel
axle
holder
axle support
Prior art date
Application number
PCT/DE1998/002442
Other languages
German (de)
French (fr)
Inventor
Georg Blosch
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1999035019A1 publication Critical patent/WO1999035019A1/en

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Classifications

    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/52—Torque sensing, i.e. wherein the braking action is controlled by forces producing or tending to produce a twisting or rotating motion on a braked rotating member
    • 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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D2051/001—Parts or details of drum brakes
    • F16D2051/003—Brake supports
    • 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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0008—Brake supports
    • 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

Definitions

  • the invention relates to a braking device for vehicles, in particular motor vehicles, of the type defined in the preamble of Claim 1.
  • the senor is designed as a so-called pillow block force transducer, which has a laminated or solid metal block with four metal blocks running parallel to one another and to its side surfaces """.”,”O 99/35019
  • the sensor forms a fastening element between the axle carrier and the brake holder, for which purpose its metal block is clamped to the axle carrier and the brake holder on mutually facing side surfaces that run parallel to the primary winding.
  • the brake holder is attached by means of a magnetoelastic force sensor, e.g. a force measuring bolt or a micrometer, fixed in two fastening points on the axle support.
  • the force sensors measure the bearing forces proportional to the wheel brake forces, and the wheel brake forces are calculated from these measured values.
  • the braking device according to the invention with the features of claim 1 has the advantage that only the reaction torque counteracting the actual braking torque is measured by introducing the force transducer or sensor into the torque support of the wheel brake. Only a force is measured, with disturbing forces and moments resulting from the distance between the measuring plane and the effective plane of the circumferential forces in the brake actuator by appropriate design of the bearing for the brake holder in the
  • the braking device according to the invention is preferably equipped with electromechanical wheel brakes, but is equally advantageously suitable for the use of hydraulic or pneumatic wheel brakes.
  • FIG. 1 is a plan view in the direction of arrow I in FIG. 2 of a braking device for motor vehicles with a wheel brake designed as a disc brake, O 99/35019
  • FIG. 2 is a side view of the braking device in the direction of arrow II in Fig. 1,
  • FIG. 3 shows a plan view of a braking device for motor vehicles with a wheel brake designed as a drum brake
  • FIG. 4 is a rear view of the braking device in FIG. 3,
  • Fig. 5 shows a section of a force transducer in the
  • the brake devices for motor vehicles shown in detail in FIGS. 1-4 have in common that a wheel brake 10 is provided on each vehicle wheel, which has a brake body 11 connected in a rotationally fixed manner to the vehicle wheel (not shown here), a brake actuator 12 acting on the brake body 11 for braking, and one has the brake actuator 12 receiving the brake holder 13.
  • the brake holder 13 is fixed to the undercarriage, specifically on an axle support 15 which receives the wheel axle 14 (FIG. 2).
  • the brake holder 13 is fixed on the axle carrier 15 in such a way that the brake holder 13 can be pivoted about a pivot axis 16 oriented parallel to the wheel axis 14.
  • the brake holder 13 is accommodated in a main bearing 17 arranged at a radial distance from the wheel axle 14 in the axle carrier 15.
  • the main bearing 17 is formed by a bearing pin 18 which is inserted through bores 19, 20 in the brake holder 13 and axle support 15 and is secured by means of lock nuts 21.
  • the brake holder 13 is supported at a radial distance from the pivot axis 16 in the pivot direction via a force transducer 22 on the axle carrier 15.
  • Measuring force transducer 22 is integrated in an articulated coupling 23 which is articulated on the one hand on the brake holder 13 and on the other hand on the axle support 15.
  • the articulation points of the articulated coupling are designated 24 and 25 and are designed as bearings similar to the main bearing 17.
  • the force transducer 22 is clamped between the two coupling parts 231 and 232 of the articulated coupling 23 such that the coupling parts 231 and 232 form force introduction members for introducing pressure and / or tensile forces into the force transducer 22.
  • the coupling parts 231, 232 and the force transducer 22 are preferably designed in one piece with one another.
  • FIG. 5 shows a longitudinal section of an exemplary embodiment for a force transducer 22 with coupling parts 231 and 232 arranged in one piece thereon.
  • the force transducer 22 has already been described in detail in the applicant's older patent application 197 20 641.7, so that it is only briefly outlined here.
  • the force sensor 22 has a coil core 30 made of a magnetoelastic solid or sintered material, which is provided with two winding slots crossed by 90 °, into which an excitation coil 31 (primary coil) and a sensor coil 32 (secondary coil) are inserted.
  • a box-shaped, magnetically conductive jacket 33 is placed around the coil core 30.
  • Force introduction surfaces 34, 35 are formed on the sides of the coil core 30 that face away from one another and are not covered by the jacket 33, on which the coupling parts 231, 232 are attached in one piece.
  • a through bore 26 and 27 is made in each case, which forms a bearing bush for the bearings formed in the articulation points 24, 25 of the articulated coupling 23.
  • the excitation coil 31 is supplied with AC voltage. Without a force acting on the force introduction surfaces 34, 35 of the coil core 30, the magnetic coil 32 in the sensor coil 32
  • Force introduction surfaces 34, 35 a tensile or compressive force on the coil core 30, the vector of the magnetic induction is rotated from its original position parallel to the sensor coil 32, and a secondary voltage proportional to the force is induced in the sensor coil 32.
  • the brake body 11 is formed by a brake disk 40 which is connected to the vehicle wheel in a rotationally fixed manner.
  • the brake actuator 12 has a brake caliper 41 with two brake pads pressing against the brake disk 40 on the left and right.
  • the brake holder 13 is designed as a so-called brake caliper 42, which receives the brake caliper 41 and is pivotally fixed in the main bearing 17 on the axle support 15.
  • the wheel brake 10 is designed as a drum brake.
  • the brake body 11 is designed as a brake drum 45 arranged coaxially to the wheel axis, the brake actuator 12 has two brake shoes 46 and the
  • Brake holder 13 is designed as a holding plate 47 on which the two brake shoes 46 are pivotably mounted so that they press their brake pads 48 against the inside of the brake drum 45 when the drum brake is activated.
  • the holding plate 47 is mounted concentrically to the wheel axle, which is not shown in FIGS. 3 and 4 for the sake of clarity, on the axle carrier 15 (FIG. 4) so as to be pivotable.
  • the pivot axis is again designated 16 in FIGS. 3 and 4.
  • the main bearing 17 for the brake holder 13 (holding plate 47) is therefore not arranged at a radial distance from the wheel axle 14, but coaxially to the wheel axle on the axle carrier 15.
  • the holding plate 47 is supported on the axle support 15 via the articulated coupling 23 with an integrated force transducer 22 in the articulation points 24, 25. 99/35019
  • the main bearing 17 of the brake caliper 42 can also be arranged in the axle carrier 15 in such a way that the bearing axis or pivot axis 16 is aligned with the wheel axis 14.
  • the brake holder 13 With its swivel axis 16 directly on the axle support 15, but - as is not shown further here - on a separate holder which can be separated from the axle support 15 and which the axle carrier 15 is connected in a rotationally fixed manner.
  • the connection is preferably made via two diametrically arranged threaded screws or bolts.
  • the force transducer 22 supporting the brake holder 13 must then also be supported on the separate holder. By loosening the two screws, the complete wheel brake 10 can then be removed and reinstalled very easily.

Abstract

The invention relates to a brake device for vehicles having a wheel brake (10) on each vehicle wheel, comprising a brake element (11) joined in a non-rotating manner with the vehicle wheel, a brake actuator (12) acting on the brake element (11) for the purpose of braking, and a brake support (13) holding the brake actuator (12), which support is fixed on an axle support (15) receiving the wheel axle (14). To achieve highly accurate measurements of the brake forces in the wheel brakes (10) the brake support (13) is arranged such that it can pivot about a pivoting axis (16) situated parallel to the wheel axle (14) and is supported at a radial distance to the pivoting axis (16) in the direction of pivoting on the axle support (15) by way of a force transducer (22) which measures compressive and/or tractive forces.

Description

Bremsvorrichtung für FahrzeugeBrake device for vehicles
Stand der TechnikState of the art
Die Erfindung geht aus von einer Bremsvorrichtung für Fahrzeuge, insbesondere Kraftfahrzeuge, der im Oberbegriff des .Ansp.ruchs 1 definierten Gattung.The invention relates to a braking device for vehicles, in particular motor vehicles, of the type defined in the preamble of Claim 1.
In Bremsvorrichtungen für Kraftfahrzeuge ist die Erfassung der Radbremsmomente mittels Sensoren notwendig, um bei der radindividuellen Bremsung .Abweichungen zwischen den Rädern durch eine Bremsmomentregelung auszugleichen, sowie bei der .Antriebsschlupfregelung (ASR) radindividuelle Bremswirkungen exakt einstellen zu können oder bei der Blockierschutzregelung (ABS) ein Blockieren des Fahrzeugrads anhand der Reibkoeffizienten-Schlupf-Kurve erkennen zu können.In braking devices for motor vehicles, the detection of the wheel braking torques by means of sensors is necessary in order to compensate for discrepancies between the wheels by means of braking torque control, as well as in the case of the traction control system (ASR), in order to be able to precisely set the braking effects individually or in the case of anti-lock control (ABS) Blockage of the vehicle wheel can be identified on the basis of the coefficient of friction-slip curve.
Bei einer bekannten Bremsvorrichtung dieser Art (DE 196 05 987 AI) ist der Sensor als sog. Pillow-Block- Kraftaufnehmer ausgebildet, der einen lamellierten oder massiven Metallblock mit vier parallel zueinander und zu seinen Seitenflächen verlaufenden, den Metallblock „„„.„,„ O 99/35019In a known braking device of this type (DE 196 05 987 AI), the sensor is designed as a so-called pillow block force transducer, which has a laminated or solid metal block with four metal blocks running parallel to one another and to its side surfaces """.","O 99/35019
durchdringenden Druchgangslöchern und zwei im rechten Winkel zueinander durch die Durchgangslöcher hindurchgeführte Wicklungen aufweist, von denen die eine Wicklung (Primärwicklung) wechselstromgeεpeiεt und an der anderen Wicklung (Sekundärwicklung) eine dem Kraftfluß im Metallblock proportionale Meßspannung abnehmbar ist. Der Sensor bildet ein Befestigungselement zwischen Achsträger und Bremshalter, wozu sein Metallblock an voneinander abgekehrten, parallel zur Primärwicklung verlaufenden Seitenflächen jeweils am Achsträger und am Bremshalter festgespannt ist. Bei Bremsung wird der Bremshalter von dem Bremskörper mitgezogen, wobei die Mitnahmekraft proportional zum Bremsmoment anwächst. Diese Kraft wirkt als Scherkraft auf den Pillow-Block-Kraftaufnehmer und in der Sekundärwicklung wird jeweils eine dieser Kraft proportionale AusgangsSpannung abgenommen.penetrating through holes and two windings at right angles to each other through the through holes, of which one winding (primary winding) alternating current-fed and on the other winding (secondary winding) a measuring voltage proportional to the power flow in the metal block can be removed. The sensor forms a fastening element between the axle carrier and the brake holder, for which purpose its metal block is clamped to the axle carrier and the brake holder on mutually facing side surfaces that run parallel to the primary winding. When braking, the brake holder is pulled along by the brake body, the driving force increasing in proportion to the braking torque. This force acts as a shear force on the pillow block force transducer and an output voltage proportional to this force is taken off in the secondary winding.
Bei einer ebenfalls bekannten Bremsvorrichtung dieser Art (DE 40 24 811 C2) ist der Bremshalter mittels eines magnetoelastischen Kraftsensors, z.B. eines Kraftmeßbolzens oder einer Meßschraube, in zwei Befestigungspunkten am Achsträger festgelegt. Die Kraftsensoren messen die den Radbremskräften proportionalen Lagerkräfte, und aus diesen Meßwerten werden die Radbremskräfte errechnet.In a brake device of this type which is also known (DE 40 24 811 C2), the brake holder is attached by means of a magnetoelastic force sensor, e.g. a force measuring bolt or a micrometer, fixed in two fastening points on the axle support. The force sensors measure the bearing forces proportional to the wheel brake forces, and the wheel brake forces are calculated from these measured values.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Bremsvorrichtung mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß durch die Einbringung des Kraftaufnehmers oder -sensors in die Momentabstutzung der Radbremse nur das dem tatsächlichen Bremsmoment entgegenwirkende Reaktionsmoment gemessen wird. Es wird ausschließlich eine Kraft gemessen, wobei Störkräfte und Momente, die sich aus dem Abstand der Meßebene zur Wirkebene der Umfangskräfte in dem Bremsaktuator ergeben, durch entsprechende Auslegung des Lagers für den Bremshalter imThe braking device according to the invention with the features of claim 1 has the advantage that only the reaction torque counteracting the actual braking torque is measured by introducing the force transducer or sensor into the torque support of the wheel brake. Only a force is measured, with disturbing forces and moments resulting from the distance between the measuring plane and the effective plane of the circumferential forces in the brake actuator by appropriate design of the bearing for the brake holder in the
Achsträger, in dem der Bremsträger zwecks Schwenkbarkeit um 99/35019Axle carrier in which the brake carrier in order to pivot 99/35019
seine Schwenkachse aufgenommen ist, und dessen .AbStützung aufgenommen werden können. Nachteilige Einflüsse von Stördehnungen und sich ändernden Reibradien in der Radbremse, wie sie bei der Lagerkraftmessung in den vorstehend beschriebenen bekannten Bremsvorrichtungen auftreten, sind durch die ausschließliche Einleitung von Druck- und/oder Zugkräften in den Kraftaufnehmer ausgeschlossen, so daß eine sehr genaue Erfassung der Bremskraft möglich ist, was sich vorteilhaf auf die Bremskraftregelung auswirkt . Durch die relativ freie Auswahl der Koordinaten von Schwenkachse und Abstützpunkt des Bremsträgers läßt sich eine gute Anpassung der Hebelverhältnisse an die in der Radbremse gegebene Einbausituation mit Fertigungstoleranzen erzielen und auch eine optimierte Einbaulage zur .Anpassung an den vorgegebenen Meßbereich des Kraftaufnehmers erreichen.its swivel axis is recorded, and its support can be recorded. Adverse influences of disturbing strains and changing friction radii in the wheel brake, such as occur in the measurement of the bearing force in the known braking devices described above, are excluded by the exclusive introduction of compressive and / or tensile forces into the force transducer, so that the braking force is recorded very precisely is possible, which has an advantageous effect on the braking force control. Due to the relatively free choice of the coordinates of the swivel axis and the support point of the brake carrier, a good adaptation of the lever ratios to the installation situation in the wheel brake can be achieved with manufacturing tolerances and also an optimized installation position for adaptation to the specified measuring range of the force transducer.
Die erfindungsgemäße Bremsvorrichtung wird bevorzugt mit elektromechanischen Radbremsen ausgestattet, ist aber in gleich vorteilhafter Weise für den Einsatz von hydraulischen oder pneumatischen Radbremsen geeignet.The braking device according to the invention is preferably equipped with electromechanical wheel brakes, but is equally advantageously suitable for the use of hydraulic or pneumatic wheel brakes.
Durch die in den weiteren Ansprächen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Bremsvorrichtung möglich.Advantageous further developments and improvements of the braking device specified in claim 1 are possible through the measures listed in the further claims.
Zeichnungdrawing
Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen jeweils in schematischer Darstellung:The invention is explained in more detail in the following description with reference to exemplary embodiments shown in the drawing. Each shows in a schematic representation:
Fig. 1 eine Draufsicht in Richtung Pfeil I in Fig. 2 einer Bremsvorrichtung für Kraftfahrzeuge mit einer als Scheibenbremse ausgebildeten Radbremse, O 99/350191 is a plan view in the direction of arrow I in FIG. 2 of a braking device for motor vehicles with a wheel brake designed as a disc brake, O 99/35019
Fig. 2 eine Seitenansicht der Bremsvorrichtung in Richtung Pfeil II in Fig. 1,2 is a side view of the braking device in the direction of arrow II in Fig. 1,
Fig. 3 eine Draufsicht einer Bremsvorrichtung für Kraftfahrzeuge mit einer als Trommelbremse ausgebildeten Radbremse,3 shows a plan view of a braking device for motor vehicles with a wheel brake designed as a drum brake,
Fig. 4 eine Rückansicht der Bremsvorrichtung in Fig. 3,4 is a rear view of the braking device in FIG. 3,
Fig. 5 einen Schnitt eines Kraftaufnehmers in derFig. 5 shows a section of a force transducer in the
Bremsvorrichtung gemäß Fig. 1 und 2 oder Fig. 3 und 4.Braking device according to FIGS. 1 and 2 or FIGS. 3 and 4.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Den in Fig. 1 - 4 ausschnittweise dargestellten Bremsvorrichtungen für Kraftfahrzeuge ist gemeinsam, daß an jedem Fahrzeugrad eine Radbremse 10 vorgesehen ist, die einen mit dem hier nicht dargestellten Fahrzeugrad drehfest verbundenem Bremskörper 11, einen zur Bremsung am Bremskörper 11 angreifenden Bremsaktuator 12, sowie einen den Bremsaktuator 12 aufnehmenden Bremshalter 13 aufweist. Der Bremshalter 13 ist am Fahrwerk, und zwar an einem die Radachse 14 (Fig. 2) aufnehmenden Achsträger 15, festgelegt. Die Festlegung des Bremshalters 13 an dem Achsträger 15 ist so vorgenommen, daß der Bremshalter 13 um eine zur Radachse 14 parallel ausgerichtete Schwenkachse 16 schwenkbar ist. Hierzu ist der Bremshalter 13 in einem im Radialabstand von der Radachse 14 im Achsträger 15 angeordneten Hauptlager 17 aufgenommen. Im Ausführungsbeispiel der Fig. 1 und 2 ist das Hauptlager 17 von einem Lagerbolzen 18 gebildet, der durch Bohrungen 19,20 im Bremshalter 13 und Achsträger 15 hindurchgesteckt und mittels Kontermuttern 21 gesichert ist. Der Bremshalter 13 ist im Radialabstand von der Schwenkachse 16 in Schwenkrichtung über einen Kraftaufnehmer 22 an dem Achsträger 15 abgestützt . Der Druck- und/oder Zugkräfte 99/35019The brake devices for motor vehicles shown in detail in FIGS. 1-4 have in common that a wheel brake 10 is provided on each vehicle wheel, which has a brake body 11 connected in a rotationally fixed manner to the vehicle wheel (not shown here), a brake actuator 12 acting on the brake body 11 for braking, and one has the brake actuator 12 receiving the brake holder 13. The brake holder 13 is fixed to the undercarriage, specifically on an axle support 15 which receives the wheel axle 14 (FIG. 2). The brake holder 13 is fixed on the axle carrier 15 in such a way that the brake holder 13 can be pivoted about a pivot axis 16 oriented parallel to the wheel axis 14. For this purpose, the brake holder 13 is accommodated in a main bearing 17 arranged at a radial distance from the wheel axle 14 in the axle carrier 15. In the embodiment of FIGS. 1 and 2, the main bearing 17 is formed by a bearing pin 18 which is inserted through bores 19, 20 in the brake holder 13 and axle support 15 and is secured by means of lock nuts 21. The brake holder 13 is supported at a radial distance from the pivot axis 16 in the pivot direction via a force transducer 22 on the axle carrier 15. The pressure and / or tensile forces 99/35019
messende Kraftaufnehmer 22 ist in einer Gelenkkoppel 23 integriert, die einerseits am Bremshalter 13 und andererseits am Achsträger 15 angelenkt ist. Die Gelenkpunkte der Gelenkkoppel sind mit 24 und 25 bezeichnet und sind als Lager ähnlich dem Hauptlager 17 ausgeführt. Der Kraftaufnehmer 22 ist dabei zwischen den beiden Koppelteilen 231 und 232 der Gelenkkoppel 23 so eingespannt, daß die Koppelteile 231 und 232 Krafteinleitungsglieder zum Einleiten von Druck- und/oder Zugkräfte in den Kraftaufnehmer 22 bilden. Vorzugsweise sind dabei die Koppelteile 231,232 und der Kraftaufnehmer 22 miteinander einstückig ausgeführt.Measuring force transducer 22 is integrated in an articulated coupling 23 which is articulated on the one hand on the brake holder 13 and on the other hand on the axle support 15. The articulation points of the articulated coupling are designated 24 and 25 and are designed as bearings similar to the main bearing 17. The force transducer 22 is clamped between the two coupling parts 231 and 232 of the articulated coupling 23 such that the coupling parts 231 and 232 form force introduction members for introducing pressure and / or tensile forces into the force transducer 22. The coupling parts 231, 232 and the force transducer 22 are preferably designed in one piece with one another.
In Fig. 5 ist ein Längsschnitt eines Ausführungsbeispiels für einen Kraftaufnehmer 22 mit daran einstückig angeordneten Koppelteilen 231 und 232 dargestellt.5 shows a longitudinal section of an exemplary embodiment for a force transducer 22 with coupling parts 231 and 232 arranged in one piece thereon.
Der Kraftaufnehmer 22 ist bereits in der älteren Patentanmeldung 197 20 641.7 der Anmelderin ausführlich beschrieben, so daß er hier nur kurz skizziert wird. Der Kraftsensor 22 weist einen Spulenkern 30 aus einem magnetoelastischen Voll- oder Sintermaterial auf, der mit zwei um 90° gekreuzten Wicklungsnuten versehen ist, in die eine Erregerspule 31 (Primärspule) und eine Sensorspule 32 (Sekundärspule) eingelegt sind. Um den Spulenkern 30 ist ein kastenförmiger, magnetisch leitender Mantel 33 gelegt. An den voneinander abgekehrten, nicht von dem Mantel 33 abgedeckten Seiten des Spulenkerns 30 sind Krafteinleitungsflächen 34,35 ausgebildet, an denen einstückig die Koppelteile 231,232 angesetzt sind. In den Koppelteilen 231 und 232 ist jeweils eine Durchgangsbohrung 26 bzw. 27 eingebracht, die eine Lagerbuchse für die in den Gelenkpunkten 24,25 der Gelenkkoppel 23 ausgebildeten Lager bildet . Die Erregerspule 31 ist mit WechselSpannung gespeist. Ohne eine Krafteinwirkung auf die Krafteinleitungsflächen 34,35 des Spulenkerns 30 wird in der Sensorspule 32 aufgrund der magnetischenThe force transducer 22 has already been described in detail in the applicant's older patent application 197 20 641.7, so that it is only briefly outlined here. The force sensor 22 has a coil core 30 made of a magnetoelastic solid or sintered material, which is provided with two winding slots crossed by 90 °, into which an excitation coil 31 (primary coil) and a sensor coil 32 (secondary coil) are inserted. A box-shaped, magnetically conductive jacket 33 is placed around the coil core 30. Force introduction surfaces 34, 35 are formed on the sides of the coil core 30 that face away from one another and are not covered by the jacket 33, on which the coupling parts 231, 232 are attached in one piece. In the coupling parts 231 and 232, a through bore 26 and 27 is made in each case, which forms a bearing bush for the bearings formed in the articulation points 24, 25 of the articulated coupling 23. The excitation coil 31 is supplied with AC voltage. Without a force acting on the force introduction surfaces 34, 35 of the coil core 30, the magnetic coil 32 in the sensor coil 32
Differenzbildung keine Spannung induziert . Wirkt über die 99/35019Difference formation no voltage induced. Acts over the 99/35019
Krafteinleitungsflächen 34,35 eine Zug- oder Druckkraft auf den Spulenkern 30 wird der Vektor der magnetischen Induktion aus seiner ursprünglichen, zur Sensorspule 32 parallelen Lage gedreht, und es wird in der Sensorspule 32 eine der Kraft proportionale SekundärSpannung induziert .Force introduction surfaces 34, 35 a tensile or compressive force on the coil core 30, the vector of the magnetic induction is rotated from its original position parallel to the sensor coil 32, and a secondary voltage proportional to the force is induced in the sensor coil 32.
Bei der in Fig. 1 und 2 als Scheibenbremse ausgeführten Radbremse 10 wird der Bremskörper 11 von einer Bremsscheibe 40 gebildet, die drehfest mit dem Fahrzeugrad verbunden ist. Der Bremsaktuator 12 weist eine Bremszange 41 mit zwei sich links und rechts an die Bremsscheibe 40 anpressenden Bremsbelägen auf. Der Bremshalter 13 ist als sog. Bremssattel 42 ausgebildet, der die Bremszange 41 aufnimmt und im Hauptlager 17 an dem Achsträger 15 schwenkbar festgelegt ist.In the case of the wheel brake 10 embodied as a disk brake in FIGS. 1 and 2, the brake body 11 is formed by a brake disk 40 which is connected to the vehicle wheel in a rotationally fixed manner. The brake actuator 12 has a brake caliper 41 with two brake pads pressing against the brake disk 40 on the left and right. The brake holder 13 is designed as a so-called brake caliper 42, which receives the brake caliper 41 and is pivotally fixed in the main bearing 17 on the axle support 15.
Bei der in Fig. 3 und 4 schematisch skizzierten Bremsvorrichtung ist die Radbremse 10 als Trommelbremse ausgebildet . Der Bremskörper 11 ist insoweit als koaxial zur Radachse angeordnete Bremstrommel 45 ausgebildet, der Bremsaktuator 12 weist zwei Bremsbacken 46 auf und der3 and 4, the wheel brake 10 is designed as a drum brake. To this extent, the brake body 11 is designed as a brake drum 45 arranged coaxially to the wheel axis, the brake actuator 12 has two brake shoes 46 and the
Bremshalter 13 ist als Halteplatte 47 ausgebildet, auf welcher die beiden Bremsbacken 46 schwenkbar so gelagert sind, daß sie sich bei aktivierter Trommelbremse mit ihren Bremsbelägen 48 an das Innere der Bremstrommel 45 anpressen. Die Halteplatte 47 ist konzentrisch zur Radachse, die in Fig. 3 und 4 der Übersichtlichkeit halber nicht dargestellt ist, an dem Achsträger 15 (Fig. 4) schwenkbeweglich gelagert. Die Schwenkachse ist in Fig. 3 und 4 wieder mit 16 bezeichnet. Im Gegensatz zu der Scheibenbremse gemäß Fig. l und 2 ist also hier das Hauptlager 17 für den Bremshalter 13 (Halteplatte 47) nicht mit radialem .Abstand von der Radachse 14, sondern koaxial zur Radachse am Achsträger 15 angeordnet. Die Halteplatte 47 stützt sich über die Gelenkkoppel 23 mit integriertem Kraftaufnehmer 22 in den Gelenkpunkten 24,25 an dem Achsträger 15 ab. 99/35019Brake holder 13 is designed as a holding plate 47 on which the two brake shoes 46 are pivotably mounted so that they press their brake pads 48 against the inside of the brake drum 45 when the drum brake is activated. The holding plate 47 is mounted concentrically to the wheel axle, which is not shown in FIGS. 3 and 4 for the sake of clarity, on the axle carrier 15 (FIG. 4) so as to be pivotable. The pivot axis is again designated 16 in FIGS. 3 and 4. In contrast to the disc brake according to FIGS. 1 and 2, the main bearing 17 for the brake holder 13 (holding plate 47) is therefore not arranged at a radial distance from the wheel axle 14, but coaxially to the wheel axle on the axle carrier 15. The holding plate 47 is supported on the axle support 15 via the articulated coupling 23 with an integrated force transducer 22 in the articulation points 24, 25. 99/35019
Die Erfindung ist nicht auf die vorstehend beschriebenen Ausführungsbeispiele beschränkt. So kann bei der Scheibenbremse gemäß Fig. l und 2 das Hauptlager 17 des Bremssattels 42 im Achsenträger 15 auch so angeordnet sein, daß die Lagerachse bzw. Schwenkachse 16 mit der Radachse 14 fluchtet .The invention is not restricted to the exemplary embodiments described above. 1 and 2, the main bearing 17 of the brake caliper 42 can also be arranged in the axle carrier 15 in such a way that the bearing axis or pivot axis 16 is aligned with the wheel axis 14.
Zur Vereinfachung der Montage und Demontage der Radbremse 10 ist es von Vorteil, den Bremshalter 13 mit seiner Schwenkachse 16 nicht unmittelbar auf dem Achsträger 15 festzulegen, sondern - wie hier nicht weiter dargestellt ist - auf einem von Achsträger 15 trennbaren, separaten Halter, der mit dem Achsträger 15 drehfest verbunden ist. Die Verbindung erfolgt dabei vorzugsweise über zwei diametral angeordnete Gewindeschrauben oder -bolzen. Der den Bremshalter 13 abstützende Kraftaufnehmer 22 ist dann notwendigerweise auch an dem separaten Halter abzustützen. Durch Lösen der beiden Schrauben kann die komplette Radbremse 10 dann sehr leicht aus- und wieder eingebaut werden. To simplify the assembly and disassembly of the wheel brake 10, it is advantageous not to fix the brake holder 13 with its swivel axis 16 directly on the axle support 15, but - as is not shown further here - on a separate holder which can be separated from the axle support 15 and which the axle carrier 15 is connected in a rotationally fixed manner. The connection is preferably made via two diametrically arranged threaded screws or bolts. The force transducer 22 supporting the brake holder 13 must then also be supported on the separate holder. By loosening the two screws, the complete wheel brake 10 can then be removed and reinstalled very easily.

Claims

O 99/35019Ansprüche O 99/35019 claims
1. Bremsvorrichtung für Fahrzeuge mit einer Radbremse (10) an jedem Fahrzeugrad, die einen mit dem Fahrzeugrad drehfest verbundenen Bremskörper (11) , einen zur Bremsung auf den Bremskörper (11) wirkenden Bremsaktuator (12) , sowie einen den Bremsaktuator (12) tragenden Bremshalter (13) aufweist, der an einem die Radachse (14) aufnehmenden Achsträger (15) festgelegt ist, und mit einem zwischen Achsträger (15) und Bremshalter (13) angeordneten Sensor zum Erfassen des Radbremsmoments, dadurch gekennzeichnet, daß die Festlegung des Bremshalters (13) an dem Achsträger (15) schwenkbar um eine zur Radachεe (14) parallel ausgerichtete Schwenkachse (16) vorgenommen und der Bremshalter (13) im Radialabstand von der Schwenkachse (16) in Schwenkrichtung über den Sensor an dem Achsträger (15) abgestützt ist und daß der Sensor als ein Druck- und/oder Zugkräfte messender Kraftaufnehmer (22) ausgebildet ist. 1. Brake device for vehicles with a wheel brake (10) on each vehicle wheel, which has a brake body (11) connected to the vehicle wheel in a rotationally fixed manner, a brake actuator (12) acting on the brake body (11) for braking, and a brake actuator (12) Has brake holder (13) which is fixed to an axle support (15) receiving the wheel axle (14), and with a sensor arranged between the axle support (15) and brake holder (13) for detecting the wheel braking torque, characterized in that the brake holder is fixed (13) on the axle support (15) is pivotable about a pivot axis (16) oriented parallel to the wheel axis (14) and the brake holder (13) is supported at the radial distance from the pivot axis (16) in the pivoting direction via the sensor on the axle carrier (15) and that the sensor is designed as a force transducer (22) measuring pressure and / or tensile forces.
2. Bremsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Kraftaufnehmer (22) in einer Gelenkkoppel (23) integriert ist, die einerseitε am Bremεhalter (13) und andererseits am Achsträger (15) angelenkt ist.2. Braking device according to claim 1, characterized in that the force transducer (22) is integrated in an articulated coupling (23) which is articulated on the one side on the brake holder (13) and on the other hand on the axle support (15).
3. Bremsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Kraftaufnehmer (22) zwischen zwei jeweils einen Gelenkpunkt (24,25) tragenden Koppelteilen (231,232) der Gelenkkoppel (23) so eingespannt iεt, daß die Koppelteile (231,232) Krafteinleitungεglieder für den Kraftaufnehmer (22) bilden.3. Braking device according to claim 2, characterized in that the force transducer (22) between two respective articulation points (24, 25) carrying coupling parts (231, 232) of the articulated coupling (23) is clamped so that the coupling parts (231, 232) force introduction members for the force transducer (22) form.
4. Bremε orrichtung nach .Ansprach 2, dadurch gekennzeichnet, daß Kraftaufnehmer (22) und Koppelteile (231,232) der Gelenkkoppel (23) miteinander einstückig ausgeführt sind.4. Brake device according to .An Rede 2, characterized in that force transducers (22) and coupling parts (231, 232) of the articulated coupling (23) are made in one piece with one another.
5. Bremsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Bremεhalter (13) in einem im Radialabεtand von der Radachse (14) angeordneten Lager (17) im Achsträger (15) aufgenommen ist.5. Braking device according to claim 1 or 2, characterized in that the Bremεhalter (13) in a Radialabεtand from the wheel axle (14) arranged bearing (17) is received in the axle support (15).
6. Bremsvorrichtung nach .Ansp.ruch l oder 2, dadurch gekennzeichnet, daß der Bremεhalter (13) in einem koaxial zur Radachεe (14) angeordneten Lager (17) im Achεträger (15) aufgenommen iεt.6. Braking device according to .Ansp.ruch l or 2, characterized in that the brake holder (13) is accommodated in a bearing (17) arranged coaxially to the Radachεe (14) in the axle support (15).
7. Bremsvorrichtung nach .Anspruch 1 , dadurch gekennzeichnet, daß die Schwenklagerung und Abεtützung des Bremshaiterε (13) nur mittelbar am Achsträger (15) an einem mit dem Achsträger (15) lösbar verbundenen, separaten Halter vorgenommen ist.7. Braking device according to .Anspruch 1, characterized in that the pivot bearing and support of the Bremshaiterε (13) is made only indirectly on the axle support (15) on a with the axle support (15) detachably connected, separate holder.
8. Bremsvorrichtung nach Ansp.ruch 7, dadurch gekennzeichnet, daß die Befeεtigung deε Halterε am Achεträger (15) mittelε mindestens zweier Schrauben vorgenommen ist. 8. Braking device according to claim 7, characterized in that the fastening of the holder on the axle support (15) is carried out by means of at least two screws.
PCT/DE1998/002442 1998-01-08 1998-08-21 Brake device for vehicles WO1999035019A1 (en)

Applications Claiming Priority (2)

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DE19800422.2 1998-01-08
DE1998100422 DE19800422A1 (en) 1998-01-08 1998-01-08 Brake device for vehicles

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EP2360259A2 (en) 2000-07-27 2011-08-24 The Johns Hopkins University School Of Medicine Promyostatin peptides and methods of using same
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DE10309726A1 (en) * 2003-03-06 2004-09-16 Bayerische Motoren Werke Ag Wheel brake for motor vehicle has relative movement between wheel and brake used to operate air cooling fan for brake
DE102005021719A1 (en) * 2005-05-11 2006-11-16 Zf Friedrichshafen Ag Method and device for controlling a vehicle brake system
ES2572979T3 (en) * 2006-03-29 2016-06-03 Meggitt Sa Device for measuring the braking power of an aircraft's brake system
IT202100030617A1 (en) * 2021-12-03 2023-06-03 Brembo Spa Gripper and holder assembly and method

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