WO2008012282A1 - Dispositif de commande, en particulier frein de stationnement d'un véhicule automobile - Google Patents

Dispositif de commande, en particulier frein de stationnement d'un véhicule automobile Download PDF

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Publication number
WO2008012282A1
WO2008012282A1 PCT/EP2007/057558 EP2007057558W WO2008012282A1 WO 2008012282 A1 WO2008012282 A1 WO 2008012282A1 EP 2007057558 W EP2007057558 W EP 2007057558W WO 2008012282 A1 WO2008012282 A1 WO 2008012282A1
Authority
WO
WIPO (PCT)
Prior art keywords
movement
magnetic body
signal transmitter
spring
body element
Prior art date
Application number
PCT/EP2007/057558
Other languages
German (de)
English (en)
Inventor
Stephan Roos
Armin Sauer
Robert Sparks
Norbert Deutloff
Joachim Heunisch
Christoph Pitsch
Thomas Reckhorn
Original Assignee
Siemens Vdo Automotive Ag
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 Siemens Vdo Automotive Ag filed Critical Siemens Vdo Automotive Ag
Publication of WO2008012282A1 publication Critical patent/WO2008012282A1/fr

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
    • B60T13/746—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 and mechanical transmission of the braking action
    • 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
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/085—Brake-action initiating means for personal initiation hand actuated by electrical means, e.g. travel, force sensors
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B60T7/107—Disposition of hand control with electrical power assistance

Definitions

  • Control device in particular motor vehicle parking brake
  • the invention relates to an adjusting device, in particular a motor vehicle parking brake, with the features specified in the preamble of patent claim 1.
  • force sensor In motor vehicle parking brakes, which are designed as so-called electronic parking brakes, the use of a magnetic lifting force sensor (hereinafter referred to as "force sensor” for short) is known which operates on the “slide-by principle". This principle is based on a force-dependent passage of a magnet body to a signal transmitters via, for example a Hall sensor, the magnetic change detected in the signal ge ⁇ about allows a conclusion to a movement-causing force. It is known that such force sensors consist of an electronic part and a mechanical part. From the prior art, it is known to use a spring element in the form of a leaf spring in order to allow a possible play-free relative movement between the magnet and the Hall sensor. The purpose of the spring element is to ensure that the force sensor is insensitive to manufacturing and assembly tolerances perpendicular to the direction of movement.
  • the force sensor After assembly, the force sensor is calibrated once. Its resulting individual characteristic is stored in an electronic memory of the parking brake. All other operations of the force sensor are then carried out with reference to this stored characteristic. This means that all changes in the relative position of the magnet to signal generator in the unloaded state, as they can occur ⁇ example, by temperature changes, over the life of the parking brake, etc., affect the accuracy of the force sensor to be measured.
  • a disadvantage of the known force sensors is the oblique position of the magnet caused by the leaf spring, which can lead to inaccuracies in the measurement, to increased mechanical wear and in extreme cases to tilting of the magnet body. Also disadvantageous is the long tolerance chain in the direction of movement between the electronic and the mechanical part of the force sensor.
  • An object of the present invention is therefore to enable a particularly safe and reliable operation of such a control device.
  • a secure and permanent contact between the two surfaces of izoflä- magnetic body element and signal transmitter element according to the invention is ensured by the fact that the magnetic body member is independent of the action of a spring element mitge ⁇ taken. This ensures a particularly safe operation of the measuring device.
  • the spring element presses the magnetic body element at least during a movement in ei ⁇ ner movement direction at the same time against the stop.
  • the spring member serves not only for urging the magnetic body member in a direction perpendicular to the moving direction toward the magnetic body member.
  • a loading of the Magnet Economics- element also takes place against the stop, which entrains the Magnet Economics- element in one movement. This will not only a particularly secure system of the magnetic body element on the stop, but at the same time a particularly secure contacting of the two contact surfaces of the magnetic body element and signal element reaches.
  • the spring element is preferably arranged obliquely to the direction of movement for this purpose. It is particularly advantageous since at ⁇ that then both results can be achieved by the use of a ⁇ Zigen spring element. Alternatively, it is of course also possible, for the application of the magnetic body element perpendicular to the movement ⁇ direction on the one hand and obliquely to the direction of movement on the stop on the other hand to use separate spring elements ⁇ the.
  • the described effects can be achieved in a particularly simple manner in that a helical compression spring is used as the spring element, which engages around a holding pin of the magnetic body element extending at an angle to the direction of movement.
  • the force sensor is insensitive to manufacturing and assembly tolerances not only perpendicular to the direction of movement, but also in the direction of movement.
  • the adjusting device according to the invention allows a significantly shorter tolerance chain in the direction of movement, which makes it possible to exploit a larger range of the magnetic stroke.
  • the accuracy of the measuring device and the safety of the actuator is improved overall interpreting ⁇ Lich.
  • FIG. 1 shows a detail view from FIG. 1
  • FIG. 4 shows a detail view from FIG. 3
  • a motor vehicle parking brake 1 This consists essentially of a power-driven drive in the form of an electric motor (not shown), which drives an actuator in the form of a spindle nut 4 via gear elements. At the associated spindle 5, a brake cable (not shown) is attached.
  • a measuring device in the form of a force sensor 10 is used to measure the movement of the spindle nut 4 and thus to switch off the electric motor when reaching or exceeding a certain braking force. As a result, excessive loads on the parking brake 1 should be avoided.
  • the switching off of the electric motor based on a control signal from a control unit (not shown) is generated based on the findings ⁇ ge of the measuring signal of the force sensor 10th
  • the force sensor 10 comprises a mechanical sensor part 12 connected to the spindle nut 4 via an axial needle bearing 11, inter alia with force sensor springs 13 and the like, as well as an electronic sensor part 14 arranged separately therefrom.
  • the mechanical sensor part 12 is moved during a movement of the spindle nut 4 and comprises a magnetic body element 15.
  • the electronic sensor part 14 consists essentially of a signal transmitter element 16, a E- lektronikplatine 17, a memory (not shown) for
  • the signal transmitter element 16 comprises a Hall sensor 18 which is mounted under a plastic cover 19 on the stationary electronics board 17 of the sensor part elekt ⁇ tronic fourteenth
  • the magnetic body element 15 comprises a magnetic body 20, which is surrounded by a magnetic housing 21 made of a plastic material and held by this. For a particularly secure hold of the magnetic body 20 is encapsulated with the magnet housing 21.
  • the force sensor 10 operates on the "slide-by principle", according to which a magnetic field change detected in the Hall sensor 18 allows a conclusion to be drawn on a force causing the movement of the spindle nut 4.
  • a leaf spring 22 is provided which presses the magnetic body element 15 to the plastic cover ⁇ 19 of the signal element 16, namely perpendicular to the direction of movement 23 of the operable by the electric motor spindle nut 4.
  • the leaf spring 22 is fixed at one end to a rivet pin 24 of the mechanical sensor part 12. With its other end engages around a supporting edge 25 of the mechanical sensor part 12.
  • the magnet housing 31 is no longer held above the mechanical ⁇ rule sensor part 12 but rests in a cup-shaped receptacle 34 of the sensor part 12th
  • the mechanical sensor part 12 is modified in this respect.
  • a ball-shaped end face 35 of the magnet housing 31 is located on the
  • the opposite end face 37 of the magnet housing 31 is parallel to the rear side 38 of the receiving ⁇ 34 and serves to guide the magnetic body element 15 in the receptacle 34th
  • the magnet housing 31 is pressed by a helical compression spring 42 both against the stop 32, and against the contact surface 27 of the plastic cover 19.
  • the fferendruckfe ⁇ 42 is disposed obliquely against the direction of movement 23 when tightening the parking brake 1 and engages around a just ⁇ so obliquely arranged retaining pin 43, which is formed as part of the Mag ⁇ netgepuruses 31st
  • the screw ⁇ compression coil spring 42 is supported on a support surface 44, which is part of the mechanical sensor part 12 and thus connected to the stop 32.
  • Helical compression spring 42 This ensures that the magnet housing 31 is always applied in the sense of a tolerance compensation gleichze ⁇ SSIG on the bearing surface 27 of the plastic cover 19 and slides on this safely along.
  • the spring force of the helical compression spring 42 is selected such that the end face 37 of the magnet housing 31 rests at no time on the rear side 38 of the receptacle 34.
  • the abutment 32 - always acted upon by the helical compression spring 42 - always lies, i. even with a release of the parking brake 1 and thus an opposite movement of the spindle nut 4, on the end face 35 at.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un dispositif de commande (1), en particulier un frein de stationnement d'un véhicule automobile, comprenant un entraînement actionné par une force extérieure, un actionneur (4) pouvant être actionné par l'entraînement et un dispositif de mesure (10) pour la mesure d'un déplacement de l'actionneur (4). Le dispositif de mesure (10) comprend un élément générateur de signaux (16) avec un générateur de signaux (18) sensible aux champs magnétiques et un élément magnétique (15) avec un aimant (20), lesquels sont disposés de manière déplaçable les uns par rapport aux autres de telle sorte qu'une variation du champ magnétique détectée dans le générateur de signaux (18) permette d'en déduire une force provoquant le déplacement ; l'élément générateur de signaux (16) et l'élément magnétique (15) présentent chacun une surface d'appui (27, 33) ; un élément de ressort (42) presse l'élément magnétique (15) avec une composante de force de ressort orientée perpendiculairement à la direction de déplacement (23) contre l'élément générateur de signaux (16) de telle sorte que ces deux éléments (15, 16) viennent en contact au niveau de leurs surfaces d'appui (27, 33). Pour un fonctionnement particulièrement sûr et fiable d'un tel dispositif de commande (1), l'élément magnétique (15) s'appuie selon l'invention contre une butée (32) entraînée au cours du déplacement et est entraîné par celle-ci dans le cas d'un déplacement dans la direction de déplacement (23).
PCT/EP2007/057558 2006-07-26 2007-07-23 Dispositif de commande, en particulier frein de stationnement d'un véhicule automobile WO2008012282A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610034594 DE102006034594B4 (de) 2006-07-26 2006-07-26 Stelleinrichtung
DE102006034594.0 2006-07-26

Publications (1)

Publication Number Publication Date
WO2008012282A1 true WO2008012282A1 (fr) 2008-01-31

Family

ID=38719911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057558 WO2008012282A1 (fr) 2006-07-26 2007-07-23 Dispositif de commande, en particulier frein de stationnement d'un véhicule automobile

Country Status (2)

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DE (1) DE102006034594B4 (fr)
WO (1) WO2008012282A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008011818U1 (de) * 2008-09-05 2010-02-11 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Antriebsanordnung zur motorischen Betätigung einer Kraftfahrzeugkomponente
DE102012018142A1 (de) 2012-09-14 2014-03-20 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Getriebeeinheit
EP3620754B1 (fr) 2018-09-06 2022-01-05 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Support d'aimant et capteur de course avec le support d'aimant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701637A1 (de) * 1997-01-20 1998-07-23 Mannesmann Vdo Ag Pedaleinrichtung
WO1998056633A1 (fr) * 1997-06-09 1998-12-17 Küster & Co. Gmbh Systeme de freinage de stationnement pour vehicules
WO2002063245A1 (fr) * 2001-02-03 2002-08-15 Robert Bosch Gmbh Dispositif de mesure pour determiner sans contact un angle de rotation
WO2005061293A1 (fr) * 2003-12-22 2005-07-07 Siemens Aktiengesellschaft Dispositif de positionnement, notamment frein de stationnement d'automobile
EP1593569A1 (fr) * 2004-05-06 2005-11-09 Sila Holding Industriale Spa dispositif de contrôle pour servofrein de véhicule
WO2005113306A1 (fr) * 2004-05-18 2005-12-01 Siemens Aktiengesellschaft Systeme de frein de stationnement muni d'un capteur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8712723D0 (en) * 1987-05-29 1987-07-01 Anilam Electronics Europ Ltd Transducer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701637A1 (de) * 1997-01-20 1998-07-23 Mannesmann Vdo Ag Pedaleinrichtung
WO1998056633A1 (fr) * 1997-06-09 1998-12-17 Küster & Co. Gmbh Systeme de freinage de stationnement pour vehicules
WO2002063245A1 (fr) * 2001-02-03 2002-08-15 Robert Bosch Gmbh Dispositif de mesure pour determiner sans contact un angle de rotation
WO2005061293A1 (fr) * 2003-12-22 2005-07-07 Siemens Aktiengesellschaft Dispositif de positionnement, notamment frein de stationnement d'automobile
EP1593569A1 (fr) * 2004-05-06 2005-11-09 Sila Holding Industriale Spa dispositif de contrôle pour servofrein de véhicule
WO2005113306A1 (fr) * 2004-05-18 2005-12-01 Siemens Aktiengesellschaft Systeme de frein de stationnement muni d'un capteur

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DE102006034594B4 (de) 2010-02-04
DE102006034594A1 (de) 2008-02-07

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