WO2018149437A1 - Dispositif de simulation de force de pédale, comprenant un élément ressort plat, et système d'actionnement associé - Google Patents

Dispositif de simulation de force de pédale, comprenant un élément ressort plat, et système d'actionnement associé Download PDF

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Publication number
WO2018149437A1
WO2018149437A1 PCT/DE2018/100025 DE2018100025W WO2018149437A1 WO 2018149437 A1 WO2018149437 A1 WO 2018149437A1 DE 2018100025 W DE2018100025 W DE 2018100025W WO 2018149437 A1 WO2018149437 A1 WO 2018149437A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
pedal force
simulation device
spring elements
bearing point
Prior art date
Application number
PCT/DE2018/100025
Other languages
German (de)
English (en)
Inventor
Andreas Schiebenes
Sebastian Honselmann
Manuel BAßLER
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to DE112018000850.9T priority Critical patent/DE112018000850A5/de
Publication of WO2018149437A1 publication Critical patent/WO2018149437A1/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
    • 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
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/18—Connection thereof to initiating means
    • 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
    • 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
    • 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
    • B60T8/321—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 deceleration
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • 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
    • B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
    • B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
    • 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
    • B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
    • B60T2220/06—Adjustment of accelerator pedal reaction forces

Definitions

  • the invention relates to a pedal force simulation device (ie, a pedal force simulation / pedal force simulator) for a motor vehicle, such as a car, truck, bus, or other utility vehicle, having a housing and a housing received along the housing and along a longitudinal axis the guide piston slidable guide piston, wherein the guide piston has a along the longitudinal axis (conical / conical) extending (ie widening and / or tapering in a radial direction of the longitudinal axis) cone segment and wherein on this cone segment (/ a conical surface of the cone segment) of two each other in a radial direction of the longitudinal axis facing away from each side a biased by a spring element contact element is pressed or pressed.
  • the invention relates to an actuation system for a motor vehicle clutch with this Pedalkraftsimulationsvomchtung.
  • actuation systems including actuation systems in which a sensor is present in a device coupled to the pedal force simulation device, which detects the actuation of the pedal and accordingly controls the actuation / disengagement or engagement of the clutch.
  • 24.08.2015 discloses a device for force simulation on an actuating element of a vehicle, in particular a pedal force simulator disclosed.
  • This device has a housing and an axially displaceable piston in the housing, wherein the piston is connected via a piston rod with the actuating element.
  • a spring element is present, which is at least partially, in particular completely, disposed within the housing.
  • the piston has a varying cross-section and when actuated by the actuating element, it engages in the spring element, wherein on the spring element rolling bodies are arranged, which are in operative connection with the piston and wherein the spring element consists of at least a first and a second spring part, which are interconnected.
  • the spring elements are formed so that they have a flat extension in an unloaded state, i. extend in an unloaded state along an imaginary extension plane straight / straight.
  • the spring elements are significantly easier formed and produced in a cost effective manner as a mass component.
  • numerous process steps for forming the shape of the spring elements are saved over the prior art.
  • the spring elements are each supported on three bearing points, the spring elements are permanently pressed against the cone segment.
  • a corresponding force characteristic of the pedal force simulation device is converted particularly reliably over the service life.
  • the spring elements each at a first housing-fixed bearing point (ie at a first fixed to the housing supported bearing point) and a second housing-fixed bearing point (ie at a second fixedly supported on the housing bearing point) are supported / pivotally mounted.
  • the spring elements are preferably each supported on a third bearing point, said third bearing point is in turn formed by a conical surface of the cone segment.
  • first bearing point, the second bearing point, and the third bearing point are sequentially spaced in an axial direction (i.e., along the longitudinal axis).
  • the first bearing point is thus arranged at a side facing away from the third bearing point of the second bearing point.
  • the guide piston has several, for example two slide bearing sections, which are each arranged to a different axial side of the cone segment and abut against an inner circumferential side of the housing, the guide piston is securely guided.
  • the spring elements in an operating state of the pedal force simulation device permanently press the associated contact element to a conical surface of the cone segment, ie that the contact element rests in any displaced in operation displacement position of the guide piston on the respective conical surface.
  • the respective contact element is preferably designed as a role, namely as a needle roller / needle-like role.
  • the roll forms a kind of needle roller bearing.
  • the invention relates to an actuating system for a motor vehicle clutch with the pedal force simulation device according to the invention according to at least one of the embodiments described above.
  • a pedal force simulation device / a pedal force simulator with a multi-part spring unit to form the spring elements flat.
  • the spring elements are connected via three support points (bearing points) via a holder (insertion sleeve) with the housing of the pedal force simulator.
  • the two outer contact points shorten the lever arm of the respective spring elements and thus lead to an increase in spring stiffness.
  • a two-part piston guide with a distance between the bearing surfaces (plain bearing sections) on the housing to an improved leadership by restricting the tilting movement of the piston (guide piston) in an off-center force application.
  • the scenery can be arranged within the two-piece piston.
  • Show it: 2 is a perspective view of the longitudinally cut pedal force simulation device according to FIG. 1, so that in particular the arrangement of two spring elements and their interaction with a cone segment can be recognized.
  • the figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals.
  • a preferred embodiment of a pedal power simulation device 1 serves to counteract an appropriate reaction force (pedal force) to an operator as a function of the displacement / pivoting path of an operating pedal (not shown here for clarity), namely a clutch pedal.
  • the pedal force simulation device 1 is used in an actuating system of a clutch of a drive train of a motor vehicle, not shown for the sake of clarity.
  • the pedal force simulation device 1 thus serves as a device which simulates a corresponding counterforce to the operator as a function of the position of the operating pedal.
  • the actual signal for actuating / engaging or disengaging the corresponding clutch of the motor vehicle is electronically transmitted to the respective input or release of the clutch.
  • the actuation system is therefore designed as a clutch-by-wire system.
  • the pedal force simulation device 1 basically has a housing 2, within which a guide piston 4 is displaceably guided.
  • the housing 2 has a sleeve-like outer wall 16, which extends cylindrically along an imaginary longitudinal axis 3 of the housing 2.
  • the housing 2 thus forms an interior, within which the guide piston 4 is slidably received along the longitudinal axis 3.
  • the guide piston 4 at two, as explained in more detail below, slide bearing sections 13 and 14 on an inner peripheral side 12 of the housing 2 / the outer wall 16 slidably guided.
  • the cone segment 5 is, as can be seen well in Fig. 2, formed as a plate-shaped segment and has two mutually facing each other in a radial direction of the longitudinal axis 3 conical surfaces 7a and 7b.
  • the cone segment 5 extends in particular along an axial direction of the longitudinal axis 3 and in an imaginary radial plane along a first radial direction. Consequently, the cone segment 5 is aligned with an imaginary plane of extension in which it extends transversely, namely perpendicular to a second radial plane extending in a second radial direction.
  • the cone segment 5 tapers in a first section and thickened thereafter in a second section.
  • the conical surfaces 7a and 7b extend, as seen in the axial direction, complementary to one another, so that the two conical surfaces 7a and 7b are mirror-inverted with respect to the plane of extent of the conical segment 5.
  • the cone segment 5 is firmly received in the guide piston 4.
  • the cone segment 5 is inserted / received in recesses within the guide piston 4.
  • the cone segment 5 is secured to the guide piston 4 in such a manner that the cone segment 5 is fixed / secured in position in the axial direction as well as in the first radial direction (in the first radial plane corresponding to the plane of extent).
  • the cone segment 5 In the second radial direction (in the second radial plane) extending transversely to the plane of extent of the cone segment 5, however, the cone segment 5 is received in a displaceably displaceable manner in the region of the recesses between two stops of the guide piston 4.
  • a contact element 6a or 6b assigned to it is pressed.
  • a first contact element 6a is connected to a first conical surface 7a
  • a second contact element 6b is to a second, facing away from the first conical surface 7a Cone surface 7b pressed.
  • the contact elements 6a, 6b are each designed as a roller, namely as a needle roller.
  • the contact elements 6a and 6b are in turn rotatably mounted / received on a respective spring element 8a and 8b.
  • the contact elements 6a and 6b are each part of one of the spring elements 8a or 8b, so that the spring element 8a, 8b is designed in several parts.
  • the spring elements 8a and 8b are components of a spring unit 17 mounted in the housing 2. According to the invention, the spring elements 8a and 8b are shaped in such a way that, in their unloaded state, they are in a plane, i. just reach.
  • the spring unit 17 is designed in several parts. In addition to two individual spring elements 8a and 8b, the spring unit 17 also has an insertion sleeve 15.
  • the insertion sleeve 15 serves as a holder / receptacle for the spring elements 8a and 8b in the housing 2.
  • the insertion sleeve 15 is preferably pressed or screwed on the inner peripheral side 12 of the housing 2. In principle, other types of attachment for the insertion sleeve 15 in the housing 2 can be implemented in this context.
  • the insertion sleeve 15 is always fixed, namely firmly integrated in the housing 2 in the axial and in the radial direction.
  • the spring elements 8a and 8b are each attached to a first bearing point 9, which is arranged on an end region of the spring elements 8a, 8b facing away from the respective contact element 6a and 6b, attached to the insertion sleeve 15 and thus indirectly fixed to the housing / supported.
  • the first bearing point 9 thus forms a pivot point, on which the spring elements 8a, 8b are firmly clamped.
  • the spring elements 8a and 8b extend substantially in the axial direction towards the cone segment 5 / to the contact elements 6a and 6b, but are slightly angled in their extension to the longitudinal axis 3.
  • the spring elements 8a and 8b are also fixed to the housing at a second bearing point 10 / supported on the insertion sleeve 15.
  • the spring elements 8a and 8b respectively lie, with the formation of a fulcrum, on support elements 18 in the form of Support pins on.
  • the individual bearing points 9, 10 and 1 1 are spaced apart in the axial direction, in particular the distance (first distance) between the first bearing point 9 and the second bearing point 10 is smaller than the further distance (second distance) between the second bearing point 10 and the third storage point 1 1 is.
  • sliding bearing sections 13, 14, are each arranged to one axial side of the cone segment 5.
  • a first sliding portion / slide bearing portion 13 is arranged in the axial direction to a first side of the cone segment 5, while a second sliding portion / slide bearing portion 14 is disposed to a first slide bearing portion 13 remote from the second side of the cone segment 5 in the axial direction.
  • Both slide bearing portions 13 and 14 are designed substantially as annular portions and are slidably on the inner peripheral side 12.
  • the second sliding bearing section 14 also merges into a journal region 19. This pin portion 19 receives a piston rod 20 against displacement.
  • the piston rod 20 is connected in the usual way with the operating pedal of the motor vehicle.
  • a compression spring 21 in the form of a screw compression spring, which is arranged outside the housing 2, is typically present.
  • the compression spring 21 is supported at a first end to a housing-fixed area and coupled to a second end non-displaceable with the piston rod 20.
  • the compression spring 21 is used for biasing the piston rod 20 (and indirectly the guide piston 4) in an extended position relative to the housing 2.
  • the compression spring 21 is completely surrounded in the radial direction from radially outside by a schematically illustrated mudguard 22.
  • the contact elements 6a and 6b are permanently pressed by the spring elements 8a and 8b with a certain biasing force on the cone surfaces 7a and 7b, the contour of the conical surfaces / conical segment, the biasing force of the spring elements 8a and 8b and the biasing force of the compression spring 21 the corresponding force curve for simulating the corresponding pedal force.
  • the embodiment according to the invention of a prior art pedal force simulation device 1 is distinguished, in particular, by the fact that the component geometry is simplified with regard to manufacturability by means of a flat spring element 8a, 8b.
  • the storage concept was adapted accordingly and now represents a three-point bearing 9, 10, 1 1. Two of the bearing points 9,10 are in the fastener (insertion sleeve 15), the third bearing point 1 1 is the point of contact between the scenery (cone segment 5) and the needle rollers 6a, 6b located on the multi-part spring element 8a, 8b. In order to ensure the seat of the spring elements 8a, 8b they are to be clamped permanently.
  • the slide 5 is axially and radially fixed in the two-part piston (guide piston 4) on their contact points on the piston 4, wherein a certain radial movement is possible, but limited by stops.
  • the leadership of the piston 4 in the housing 2 via two spaced-apart contact surfaces (plain bearing sections 13, 14) located on the right and left of the gate 5) to reduce the susceptibility to tipping by an off-center force on the piston 4.
  • the force characteristic is determined upon actuation of the pedal force simulator 1 by the interaction of the compression spring 21, the shape of the link 5 and the spring stiffness.
  • the effective lever arm of the spring element 8a, 8b is directly influenced, which thus brings about an increase or reduction of the spring rigidity.
  • a change in the gate shape increases or decreases, upon actuation of the pedal force simulator 1, the deflection of the spring elements 8a, 8b and thus changes the force curve of the overall system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

L'invention concerne un dispositif de simulation de force de pédale (1) pour un véhicule à moteur, comprenant un boîtier (2) ainsi qu'un piston de guidage (4) logé dans le boîtier (2) et pouvant coulisser le long d'un axe longitudinal (3) du boîtier (2), le piston de guidage (4) présentant un segment conique (5) s'étendant le long de l'axe longitudinal (3). Un élément de contact (6a, 6b) respectif, positionné par un élément ressort (8a, 8b), peut être pressé contre ce segment conique (5) par deux côtés opposés l'un à l'autre dans une direction radiale de l'axe longitudinal (3). Les éléments ressorts (8a, 8b) sont conçus de façon à présenter une étendue plane à l'état non sollicité. L'invention concerne en outre un système d'actionnement pour un embrayage de véhicule à moteur équipé de ce dispositif de simulation de force de pédale (1).
PCT/DE2018/100025 2017-02-16 2018-01-16 Dispositif de simulation de force de pédale, comprenant un élément ressort plat, et système d'actionnement associé WO2018149437A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112018000850.9T DE112018000850A5 (de) 2017-02-16 2018-01-16 Pedalkraftsimulationsvorrichtung mit ebenem Federelement sowie Betätigungssystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017103211.8A DE102017103211A1 (de) 2017-02-16 2017-02-16 Pedalkraftsimulationsvorrichtung mit ebenem Federelement sowie Betätigungssystem
DE102017103211.8 2017-02-16

Publications (1)

Publication Number Publication Date
WO2018149437A1 true WO2018149437A1 (fr) 2018-08-23

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PCT/DE2018/100025 WO2018149437A1 (fr) 2017-02-16 2018-01-16 Dispositif de simulation de force de pédale, comprenant un élément ressort plat, et système d'actionnement associé

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DE (2) DE102017103211A1 (fr)
WO (1) WO2018149437A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019216855A1 (de) * 2019-10-31 2021-05-06 Zf Friedrichshafen Ag Krafterzeugungseinrichtung, insbesondere Pedalkraftsimulator, für ein Betätigungselement eines Kraftfahrzeugs

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061569A1 (de) * 2007-12-19 2009-06-25 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Kupplungsbetätigungssystem
DE102014203271A1 (de) * 2013-03-12 2014-09-18 Schaeffler Technologies Gmbh & Co. Kg Betätigungseinrichtung für eine Kupplung
DE102014225996A1 (de) * 2013-12-17 2015-06-18 Schaeffler Technologies AG & Co. KG System zur Pedalkraftsimulation, insbesondere für ein Kupplungsbetätigungssystem
WO2015165449A1 (fr) * 2014-04-29 2015-11-05 Schaeffler Technologies AG & Co. KG Dispositif permettant de simuler l'application d'une force sur un élément d'actionnement d'un véhicule, de préférence simulateur de pédale
DE102014211481A1 (de) * 2014-06-16 2015-12-17 Schaeffler Technologies AG & Co. KG Pedalkraftsimulator
WO2016146117A1 (fr) * 2015-03-16 2016-09-22 Schaeffler Technologies AG & Co. KG Dispositif de simulation de force sur un élément d'actionnement d'un véhicule, notamment du type simulateur de force de pédale
WO2016162623A1 (fr) * 2015-04-07 2016-10-13 Valeo Embrayages Émulateur d'effort pour commande électrique de système de transmission
DE102015215029A1 (de) * 2015-08-06 2017-02-09 Schaeffler Technologies AG & Co. KG Vorrichtung zur Kraftsimulation an einem Betätigungselement eines Fahrzeuges, insbesondere einem Pedalkraftsimulator
DE102015216146A1 (de) 2015-08-24 2017-03-02 Schaeffler Technologies AG & Co. KG Vorrichtung zur Kraftsimulation an einem Betätigungselement eines Fahrzeugs, insbesondere Pedalkraftsimulator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061569A1 (de) * 2007-12-19 2009-06-25 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Kupplungsbetätigungssystem
DE102014203271A1 (de) * 2013-03-12 2014-09-18 Schaeffler Technologies Gmbh & Co. Kg Betätigungseinrichtung für eine Kupplung
DE102014225996A1 (de) * 2013-12-17 2015-06-18 Schaeffler Technologies AG & Co. KG System zur Pedalkraftsimulation, insbesondere für ein Kupplungsbetätigungssystem
WO2015165449A1 (fr) * 2014-04-29 2015-11-05 Schaeffler Technologies AG & Co. KG Dispositif permettant de simuler l'application d'une force sur un élément d'actionnement d'un véhicule, de préférence simulateur de pédale
DE102014211481A1 (de) * 2014-06-16 2015-12-17 Schaeffler Technologies AG & Co. KG Pedalkraftsimulator
WO2016146117A1 (fr) * 2015-03-16 2016-09-22 Schaeffler Technologies AG & Co. KG Dispositif de simulation de force sur un élément d'actionnement d'un véhicule, notamment du type simulateur de force de pédale
WO2016162623A1 (fr) * 2015-04-07 2016-10-13 Valeo Embrayages Émulateur d'effort pour commande électrique de système de transmission
DE102015215029A1 (de) * 2015-08-06 2017-02-09 Schaeffler Technologies AG & Co. KG Vorrichtung zur Kraftsimulation an einem Betätigungselement eines Fahrzeuges, insbesondere einem Pedalkraftsimulator
DE102015216146A1 (de) 2015-08-24 2017-03-02 Schaeffler Technologies AG & Co. KG Vorrichtung zur Kraftsimulation an einem Betätigungselement eines Fahrzeugs, insbesondere Pedalkraftsimulator

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DE112018000850A5 (de) 2019-10-24
DE102017103211A1 (de) 2018-08-16

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