WO2006040061A1 - Mecanisme d'un frein de stationnement et frein de stationnement a pedale pour un vehicule automobile - Google Patents

Mecanisme d'un frein de stationnement et frein de stationnement a pedale pour un vehicule automobile Download PDF

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Publication number
WO2006040061A1
WO2006040061A1 PCT/EP2005/010752 EP2005010752W WO2006040061A1 WO 2006040061 A1 WO2006040061 A1 WO 2006040061A1 EP 2005010752 W EP2005010752 W EP 2005010752W WO 2006040061 A1 WO2006040061 A1 WO 2006040061A1
Authority
WO
WIPO (PCT)
Prior art keywords
pawl
parking brake
gravity
unit
center
Prior art date
Application number
PCT/EP2005/010752
Other languages
German (de)
English (en)
Inventor
Antti Paasivirta
Eckhard Reese
Michael Siemers
Rene Tibke
Original Assignee
Daimlerchrysler 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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006040061A1 publication Critical patent/WO2006040061A1/fr

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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
    • 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
    • B60T7/045—Brake-action initiating means for personal initiation foot actuated with locking and release means, e.g. providing parking brake application
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
    • B60T11/046—Using cables

Definitions

  • the present invention relates to a mechanism for setting Fest ⁇ and releasing a parking brake of a motor vehicle, which is also commonly referred to as a parking brake.
  • the present invention relates in particular Fest ⁇ parking brakes of motor vehicles, which are operated with the foot of a driver.
  • the invention furthermore relates to such a foot-operated parking brake for motor vehicles, in which the driver of the vehicle can actuate the brake via a foot pedal in the footwell of the passenger compartment and release it again by actuating it again.
  • Such foot-operated parking brakes or parking brakes for motor vehicles are known in various ways in the prior art.
  • the aim of these brakes is to make the Actuate supply and the release of the brake in the simplest possible way for the driver.
  • so-called "push-to-release" parking brakes have been developed, in which the driver retains the brake by actuating a foot pedal. The releasing of such brakes takes place by a further brief actuation and subsequent release of the pedal, which due to the restoring spring and / or return forces returns to its initial position (or neutral position).
  • foot parking brakes are known for example in the prior art from: US 4,441,380, US 4,519,270, US 5,217,094, US 6,508,341, US 4,872,368, US 5,588,335, WO 0162565, WO 9819900, DE 196 29048, DE 30 35 066.
  • foot parking brakes are impractical to use, ie, they have, for example, poor ergonomics or increased noise, whereas others are susceptible to interference due to their complex, mechanical design, and as a rule, only one ⁇ ne short life guarantee.
  • the present invention has the object to solve the disadvantages mentioned and in particular to propose a mechanism for a Popetätigbare parking brake and such a parking brake, which ensures an effective Funkti ⁇ onsele over a long period and which can be produced at the lowest possible cost.
  • the mechanism according to the invention for controlling has a pawl unit which comprises at least one pawl which is pivotally mounted about at least one axis and a latch unit which interacts with the pawl via a pawl.
  • the mechanism according to the invention is characterized in that the pawl element or the pawl is mounted both rotatably and longitudinally displaceably both about an axis of rotation R in such a manner that a gravity-induced rotation of the pawl element can be realized.
  • the pawl is mounted in particular via a pivot bearing which is fixed, wherein the longitudinal movement (linear displacement) via a correspondingly shaped groove in which the bearing can slide, can be implemented.
  • the Sperrklin ⁇ ke of the pawl unit is hereby not only for Fest ⁇ put the foot parking brake pivotally mounted on a grid out, but they are also adjusted in a predetermined by the shape of the groove linear direction.
  • the parking brake With the rotation of the pawl about the axis of rotation, the parking brake can be fixed in a desired position by simply operating a brake pedal with engagement of a ratchet tooth in a ratchet. By repeating the same foot pedal, the foot parking brake according to the invention can be released just as easily.
  • This type of brake is also referred to as "push-to-release” brakes, that is to say brakes which do not require separate solvents, such as hand levers or the like.
  • the rotational movement of the pawl is erfindungs ⁇ according realized by means of gravity, that is, the weight distribution and mass of the pawl or Sperr ⁇ pawl unit is specifically tailored to the respective Bremsenkon ⁇ out.
  • the Drehbewe ⁇ tion of the pawl in the direction of the teeth takes place completely independently on the basis of gravity and the positioning of the pivot point of the pawl.
  • the Actuate supply and the release of the pawl is carried out according to the invention by an interaction of selectively predetermined mass tions of the corresponding components of the pawl unit with the shape and orientation of the decisive for the L jossverschiebbar- groove of the pivot bearing (or the axis of rotation).
  • a targeted mass distribution can be realized, for example, by attaching weight elements to the pawl or by deliberate thickening of the material of the pawl itself.
  • the mechanism according to the invention for actuating a foot-operated parking brake with a smaller number of parts a highly efficient and permanently functional parking brake can be realized with the invention, which is also extremely easy to operate. Due to the smaller number of parts, the manufacture and installation of the parking brake is less expensive than was the case with the previously known foot parking brakes. Moreover, due to the relatively small number of moving parts, the mechanism according to the invention is very resistant to interference, and the space requirement of the entire actuating mechanism in the foot region of the passenger compartment is also reduced.
  • a groove is provided on the pawl unit, which is arranged offset relative to the center of gravity (SP) of the pawl unit ange ⁇ .
  • SP center of gravity
  • Such an eccentrically offset positioning of the groove responsible for the longitudinal displacement can further increase the actuating force of the pawl, which is essentially or completely generated by gravity.
  • the shape and orientation of the groove can be selected for different purposes and varied specifically.
  • the groove for the longitudinal displacement of the pawl in Essentially V-shaped is for this purpose aligned with the opening of the "V" upwards, that is away from the latching unit.
  • At least one mass element is provided on the pawl unit for selectively adjusting the center of gravity of the pawl element for generating the Schwerkraftindu ⁇ ed adjustment of the pawl.
  • two mass elements are preferably provided at the ends of the pawl, so that an effective actuating force alone and / or, in cooperation with a biasing spring, the pawl is adjusted by actuating the foot pedal of the brake with the lowest possible weight.
  • Thickenings on the pawl itself may be provided as mass elements or weight sections.
  • separate Massenele ⁇ elements can be provided, which are mounted on the pawl.
  • the pawl has a ratchet tooth, which is arranged externally with respect to the center of gravity (SP) of the pawl unit.
  • SP center of gravity
  • the reliability and effectiveness of the pawl unit when latching with the latch unit is increased.
  • the leverage effect of the pawl about the point of rotation is thus increased, so that the locking tooth of the pawl located at the other end is held securely in the locked position or quickly reaches a locking position when the brake is actuated.
  • the center of gravity of the pawl unit is arranged on the central vertical of the groove, which is responsible for the linear Ver ⁇ adjustability of the pawl.
  • the median vertical (MS) of the groove is the vertical, imaginary line, which passes centrally through the preferably V-shaped groove.
  • a spring which causes a spring force vertically relative to the center of mass of the pawl in the direction of the mid-perpendicular of the groove of the pawl and in the direction of the latching unit.
  • the spring prevented by their bias unintentional return movement of Sperr ⁇ pawl element in the locked position of the foot parking brake.
  • the spring may for example be designed as a Spi ⁇ ral-compression spring or as a torsion spring.
  • the invention further relates to a foot-operated parking brake Fest ⁇ a motor vehicle, which is equipped with a "push-to-release" -Mechanik.
  • the parking brake according to the invention with the features of claim 9 is provided with an actuating pedal and has a transmission medium of the actuating force from the actuating pedal on the control mechanism on.
  • the control mechanism of the parking brake ver ⁇ see with a pawl unit and a locking unit, wherein the pawl unit at least one locking having pawl, which is provided with mass elements, which are designed such that on the basis of gravity based adjustment of the pawl is made possible.
  • Vorzugs ⁇ the axis of rotation of the pawl is mounted in a specifically shaped groove for longitudinal displacement, so that actuation of the pawl alone by means of Schwer ⁇ force of the mass elements is possible, the axis of rotation of the pawl as well as the ratchet of selb ⁇ personally ⁇ centrally that is, laterally offset with respect to the geometrical center of the pawl, are provided.
  • the groove and the ratchet tooth are eccentrically offset eccentrically relative to the center of gravity of the pawl.
  • FIG. 1 shows a schematic side view of a first exemplary embodiment of a mechanism according to the invention for controlling a foot-operated parking brake
  • FIG. 3 shows a schematic side view of a second exemplary embodiment of a mechanism according to the invention for actuating a foot-operated parking brake
  • FIG. 3a and 3b detail views of alternative embodiments of the mechanism according to FIG. 3 with regard to the return of the brake to zero position (linkage or cable system);
  • FIG. 4 shows a schematic side view, which represents restoring variants and end stops for a parking brake according to the invention.
  • Fig. 5 is a fragmentary, schematic side view of another embodiment of the invention, in which a securing spring is provided.
  • FIG. 1 shows a first exemplary embodiment of a mechanism 10 according to the invention for a foot-operated parking brake of a motor vehicle in a schematic or simplified view.
  • the mechanism consists essentially of two modules, namely a pawl unit 1 and a latch unit 2.
  • the pawl unit 1 has a pawl 3, which is rotatably mounted about an axis of rotation R.
  • the pawl 3 also has a ratchet tooth 12, which can engage with a ratchet arranged opposite (in the present case below) with a plurality of ratchet teeth 7 of the ratchet unit 2.
  • the fest ⁇ underlying pivot point of the rotation axis R (pivot pin or bearing) of the pawl 3 is arranged in the present embodiment in a V-shaped groove, via which a linear adjustment of the pawl with respect to the pivot point R in je ⁇ Weils two predetermined directions is possible ,
  • the groove 5 is provided off-center, as well as the locking tooth 12, näm ⁇ Lich in the present case, the groove 5 is arranged on the right of the geo ⁇ metric center or the center of gravity of the pawl 3 ange ⁇ .
  • the pawl 3 is further provided with Massenele ⁇ elements 4 at their ends, which are as specific Ge serve weight distribution elements.
  • the toothing of the latch unit 2 is an arc-shaped latching area 8, which itself is rotatably arranged around a main bearing 17.
  • the operation of the brake is illustrated in Fig. 1 with the actuating pedal 9 and the actuating force F B.
  • a neutral position arm 11 is provided on the latch unit, by means of which the provision of the parking brake is realized, as will be explained in more detail later (to FIGS. 3 and 4).
  • FIGS. 2a-2d show various positions in the functional sequence of the parking brake in partial side views.
  • FIG. 2 a shows the pawl 3 with its obliquely formed locking tooth 15 in engagement with the latching or between two latching teeth 7 of the latching unit 2.
  • This is the actuating position of the parking brake in which the vehicle is held stationary .
  • conventional brake systems and vehicle brakes such as hydraulically operated drum or disc brakes.
  • Other types of brake systems may also be combined with the invention.
  • the Wheel ⁇ bearing or the pivot with the axis of rotation R of the pawl 3 is in this position in the extreme right end
  • the weight sections or mass elements 4 are matched to the center of gravity SP of the pawl 3 so that it is rotated in the counterclockwise direction (see arrow in FIG.
  • the latch 6 and / or the pawl 3 may be shaped differently than is the case in this embodiment. Also, instead of two mass elements 4 only one can be provided.
  • Fig. 2b shows the securing position of the parking brake, in which the locking tooth 15 in the screening 7 (8) is engaged and the force of gravity F 3 acts in the direction of the screening out.
  • the pawl 3 according to the invention can be held in engagement due to the oblique shape of the ratchet tooth 15 and the correspondingly shaped ratchet teeth 7.
  • the ratchet tooth 6 is positively engaged between the ratchet teeth 7 (or in contact contact) and the pivot pin R of the pawl 3 is located at the left end of the V-groove 5 at.
  • FIG. 2c shows the control mechanism 10 in the solution position.
  • Gravity F 5 causes the blocking jack 3 clockwise automatically unscrewed from the grid 7 of the catch unit 2 and held in this opening position of the parking brake (see movement arrow in Fig. 2c).
  • FIG. 2 d shows a variant of a possibility for resetting the mechanism 10 for a foot parking brake according to the invention.
  • Reset means in this case that the brake returns to its original position (or release position).
  • a restoring arm or neutral position arm 11 is provided, which is rigidly connected to the catch unit 2 and, when rotated about the main bearing 17, can be in contact with the pawl 3 for its return. This activates the reset.
  • the Mecha ⁇ technology 10 and thus the parking brake is operated with a foot pedal 9 by the driver. After loosening the mechanism 10 by pressing the foot pedal 9 again, the brake automatically returns to its initial position (neutral position - see also Fig. 1) back.
  • the brake is reset in known such brake mechanisms by their remind ⁇ spring. This is also the case here.
  • the provision of the pawl 3 is based on the construction of the invention on a different principle than before, namely the equilibrium principle. In this case, preferably only gravity alone is used. Alternatively, it would also be possible to use a combination of gravity and other restoring mechanisms for the pawl 3, as disclosed, for example, in the aforementioned prior art.
  • the pawl 3 is forced to rotate counterclockwise and follow the course of the groove 5.
  • the shape of the groove 5 may also be different according to the present invention, as long as the gravity F 3 is at least partially used for the movement of the pawl 3.
  • FIG. 3 shows an alternative embodiment of the invention, and FIGS. 3a and 3b show details for explaining the same in a simplified representation.
  • a lever or knob 13 is automatically actuated.
  • a power transmission element can either a cable 12 or a lever mechanism or a linkage 16 die ⁇ NEN. Combinations of the mentioned types of power transmission are also possible.
  • FIG. 4 an alternative provision variant of the mechanism 10 is shown. It should be noted that the invention is not limited to a specific variant for the provision and that combinations of the illustrated possibilities or others are possible without departing from the scope of the invention.
  • the variant shown in FIG. 4 functions as follows:
  • the end region of the pawl 18 is designed as a smooth arcuate region 8. The pawl can therefore follow the course of the arc during the movement of the pawl 18. In the neutral position, the contact between the pawl 3 and the arcuate section 8 of the latching unit 2 ensures that the pawl 3 remains in its position and also prevents an unwanted return movement thereof.
  • the Vorspann ⁇ spring (see force F F in this Fig.) Can be either a compression coil spring or a torsion spring. Other types of preload may fit as well.
  • F F in this Fig.
  • the bias With the bias, a return movement of the pawl 3 is also verhin ⁇ changed when the vehicle on a slope with a steep slope is turned off.
  • the biasing spring increases the automatic return movement of the pawl third

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

L'invention concerne un mécanisme (10) servant à commander un frein de stationnement d'un véhicule automobile, notamment un frein de stationnement à pédale d'une voiture particulière. Le mécanisme selon l'invention comprend une unité à cliquet d'arrêt (1) comprenant au moins un cliquet d'arrêt qui est monté pivotant autour d'au moins un axe (R), ainsi qu'une unité d'encliquetage (2) qui coopère avec le cliquet d'arrêt par l'intermédiaire d'un doigt d'encliquetage (6) afin d'immobiliser et de libérer le frein de stationnement. L'unité à cliquet d'arrêt (1) est montée à la fois mobile en rotation autour d'un axe de rotation (R) et déplaçable longitudinalement par rapport à l'axe de rotation (R), ce qui permet une rotation induite par la gravité de l'unité à cliquet d'arrêt (1).
PCT/EP2005/010752 2004-10-09 2005-10-06 Mecanisme d'un frein de stationnement et frein de stationnement a pedale pour un vehicule automobile WO2006040061A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410049270 DE102004049270A1 (de) 2004-10-09 2004-10-09 Mechanismus einer Feststellbremse sowie fußbetätigbare Feststellbremse für ein Kraftfahrzeug
DE102004049270.0 2004-10-09

Publications (1)

Publication Number Publication Date
WO2006040061A1 true WO2006040061A1 (fr) 2006-04-20

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PCT/EP2005/010752 WO2006040061A1 (fr) 2004-10-09 2005-10-06 Mecanisme d'un frein de stationnement et frein de stationnement a pedale pour un vehicule automobile

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DE (1) DE102004049270A1 (fr)
WO (1) WO2006040061A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010090155A1 (fr) * 2009-02-06 2010-08-12 本田技研工業株式会社 Dispositif de frein de stationnement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929033A (en) * 1974-11-20 1975-12-30 Atwood Vacuum Machine Co Vehicle parking brake control
US5609066A (en) * 1990-11-17 1997-03-11 Simplistik Design Limited Mechanism for actuating a vehicle parking brake
US5816111A (en) * 1996-01-10 1998-10-06 Ed Scharwachter Gmbh & Co. Kg Actuator for a hand brake of a motor vehicle
US6016718A (en) * 1996-12-30 2000-01-25 Hyundai Motor Company Hand brake with the foldable operating lever
EP1378410A2 (fr) * 2002-07-06 2004-01-07 Dietz-automotive GmbH & Co. KG Actionneur d'un frein de stationnement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929033A (en) * 1974-11-20 1975-12-30 Atwood Vacuum Machine Co Vehicle parking brake control
US5609066A (en) * 1990-11-17 1997-03-11 Simplistik Design Limited Mechanism for actuating a vehicle parking brake
US5816111A (en) * 1996-01-10 1998-10-06 Ed Scharwachter Gmbh & Co. Kg Actuator for a hand brake of a motor vehicle
US6016718A (en) * 1996-12-30 2000-01-25 Hyundai Motor Company Hand brake with the foldable operating lever
EP1378410A2 (fr) * 2002-07-06 2004-01-07 Dietz-automotive GmbH & Co. KG Actionneur d'un frein de stationnement

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