WO2024017957A1 - Roue de blocage de stationnement - Google Patents

Roue de blocage de stationnement Download PDF

Info

Publication number
WO2024017957A1
WO2024017957A1 PCT/EP2023/070051 EP2023070051W WO2024017957A1 WO 2024017957 A1 WO2024017957 A1 WO 2024017957A1 EP 2023070051 W EP2023070051 W EP 2023070051W WO 2024017957 A1 WO2024017957 A1 WO 2024017957A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
parking lock
pawl
wheel rim
lock wheel
Prior art date
Application number
PCT/EP2023/070051
Other languages
German (de)
English (en)
Inventor
Michael Jungwirth
Josef Sebastian Lermer
Original Assignee
Zf Friedrichshafen 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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2024017957A1 publication Critical patent/WO2024017957A1/fr

Links

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
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels

Definitions

  • a sudden stopping of a moving drive train of a vehicle is opposed by the summed mass moment of inertia of the drive train, which is made up of the mass moments of inertia of the individual moving components of the drive train.
  • One of these components is the parking lock wheel, which, after a pawl has engaged, secures the parking position occupied by the vehicle through positive connection between the pawl and the parking lock wheel.
  • the dimensions of the parking lock wheel are determined in particular by the dimensions of the pawl and must have a wheel rim with pawl gaps whose pawl gap width corresponds at least to the pawl width.
  • a connection area between the wheel hub and the wheel rim is made narrower without affecting the stability of the parking lock wheel.
  • Stamped parking lock wheels are also known which have a constant width and have material recesses between the wheel hub and the wheel rim to reduce mass.
  • a braking device with a parking brake with a comparatively low mass moment of inertia and a drive unit with a braking device with a comparatively low mass moment of inertia should be found.
  • the task is solved for a parking lock wheel for a vehicle, with a wheel hub and a wheel rim, on which a large number of pawl gaps are present, which have a pawl gap width in an axial direction of the parking lock wheel, in that the wheel rim has a wheel rim width between the pawl gaps is smaller than the pawl gap width, which saves material and thus mass on the circumference of the parking lock wheel compared to a parking lock wheel with a constant wheel rim width equal to the pawl gap width, which has a maximum effect on reducing the mass moment of inertia.
  • the wheel hub and the wheel rim are advantageously connected to one another only via spokes.
  • one spoke is arranged radially between one of the pawl gaps and the wheel hub.
  • the cross section of the wheel rim between two of the pawl gaps is optimally continuously tapered across the wheel rim width towards a center between the pawl gaps and a radial wheel rim thickness is constant.
  • the cross section of the spokes advantageously has a spoke width that is constant in the axial direction of the parking lock wheel and a spoke thickness perpendicular to this decreases continuously towards a center of the spoke, so that the spoke tapers towards the center.
  • the task is solved in that the parking brake contains a parking lock wheel according to the invention.
  • the object is achieved in that the braking device contains a parking brake with a parking lock wheel according to the invention.
  • the invention is explained in more detail below with reference to a drawing.
  • Fig. 1 shows an advantageous embodiment of a parking lock wheel in a perspective view.
  • the parking lock wheel shown in Fig. 1 can be divided into a wheel hub 1, a wheel rim 2 with a plurality of pawl gaps 3 and a number of spokes 4, which corresponds to the plurality of pawl gaps 3.
  • the pawl gaps 3 each set an interface between the parking lock wheel and an engaging pawl and their shape and size are therefore determined by the shape and size of the pawl.
  • the size of the wheel hub 1 is largely predetermined by the diameter of the axle on which the parking lock wheel is to be arranged.
  • the diameter of the parking lock wheel is also determined by the spatial arrangement of the pawl mechanism relative to the axle and / or other components of a braking device into which the parking lock wheel is integrated.
  • the parking lock wheel is loaded by the flow of force between the pawl and the axle when the pawl is latched into one of the pawl gaps 3 or when the pawl is latched when the vehicle is parked on a slope.
  • the spokes 4 are optimally arranged radially between the pawl gaps 3 and the wheel hub 1. They have a spoke width bs which is constant over the length of the spokes 4, limited by the wheel hub 1 and the wheel rim 2, and is equal to or only slightly smaller than a pawl gap width bK.
  • the spoke thickness ds changes depending on the distance to the wheel hub 1. Starting at the wheel rim 2, the spoke thickness ds first decreases towards the middle of the spoke 4 and then steadily increases again. There are no jumps in the change in spoke thickness ds, so that there are no steps in the surface of the spokes 4.
  • a wheel rim thickness dp is constant over the entire wheel rim 2, with the wheel rim 2 being reinforced by the adjacent spokes 4 over the pawl gap lengths IK.
  • the spoke thickness ds adjacent to the wheel rim 2 is preferably larger or at least the same size as the pawl gap length IK.
  • the mass moment of inertia is significantly reduced compared to parking lock wheels known from the prior art.
  • the parking lock wheel shown in FIG. 1 is a particularly advantageous embodiment. Parking lock wheels with a different cross-sectional shape of the spokes 4 or the wheel rim 2 between the pawl gaps 3 are conceivable. The shape of the pawl gaps 3 and their number are only given here as an example.

Landscapes

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

Abstract

L'invention se rapporte à une roue de blocage de stationnement pour un véhicule, ayant un moyeu de roue (1) et une jante de roue (2) sur laquelle sont disposés une pluralité d'espaces de verrouillage (3) qui présentent une largeur d'espace de verrouillage (bK) dans une direction axiale de la roue de blocage de stationnement, la jante de roue (2) présentant, entre les espaces de verrouillage (3), une largeur de jante de roue (bR) qui est inférieure à la largeur d'espace de verrouillage (bK). L'invention se rapporte également à un dispositif de freinage pour un véhicule équipé d'un frein de stationnement pourvu d'une roue de blocage de stationnement, ainsi qu'à un système d'entraînement pour un véhicule équipé d'un tel dispositif de freinage.
PCT/EP2023/070051 2022-07-21 2023-07-19 Roue de blocage de stationnement WO2024017957A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022207485.8A DE102022207485A1 (de) 2022-07-21 2022-07-21 Parksperrenrad
DE102022207485.8 2022-07-21

Publications (1)

Publication Number Publication Date
WO2024017957A1 true WO2024017957A1 (fr) 2024-01-25

Family

ID=87429347

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/070051 WO2024017957A1 (fr) 2022-07-21 2023-07-19 Roue de blocage de stationnement

Country Status (2)

Country Link
DE (1) DE102022207485A1 (fr)
WO (1) WO2024017957A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2715251A1 (de) * 1976-04-05 1977-10-27 Nissan Motor Feststellbremse fuer kraftfahrzeuggetriebe
DE102006058858A1 (de) * 2006-12-13 2008-06-19 Volkswagen Ag Parksperrenrad
DE102007062349A1 (de) * 2007-12-22 2009-06-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Parksperreneinrichtung in einem Getriebe
DE102014000772A1 (de) * 2014-01-24 2015-07-30 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Parksperrenanordnung
US10054224B2 (en) * 2016-10-14 2018-08-21 Industrial Technology Research Institute Parking brake
CN108825775A (zh) * 2018-09-08 2018-11-16 赣州经纬科技股份有限公司 一种汽车用变速器驻车机构
DE102020215532A1 (de) * 2020-12-09 2022-06-09 Robert Bosch Gesellschaft mit beschränkter Haftung Elektrische Antriebseinrichtung für ein Fahrzeug und Verfahren zum Herstellen einer elektrischen Antriebseinrichtung für ein Fahrzeug

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002282954A (ja) 2001-03-26 2002-10-02 Press Kogyo Co Ltd パーキングギヤおよびその成形方法・装置
CN207049289U (zh) 2017-07-28 2018-02-27 玉环伟琳机械有限公司 一种棘轮
CN108799492B (zh) 2018-08-31 2023-12-12 海马汽车有限公司 驻车锁止机构及汽车
DE102019118828B4 (de) 2019-07-11 2021-02-04 Schaeffler Technologies AG & Co. KG Parksperrenvorrichtung für eine elektrische Antriebsachse und elektrische Antriebsachse mit einer Parksperrenvorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2715251A1 (de) * 1976-04-05 1977-10-27 Nissan Motor Feststellbremse fuer kraftfahrzeuggetriebe
DE102006058858A1 (de) * 2006-12-13 2008-06-19 Volkswagen Ag Parksperrenrad
DE102007062349A1 (de) * 2007-12-22 2009-06-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Parksperreneinrichtung in einem Getriebe
DE102014000772A1 (de) * 2014-01-24 2015-07-30 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Parksperrenanordnung
US10054224B2 (en) * 2016-10-14 2018-08-21 Industrial Technology Research Institute Parking brake
CN108825775A (zh) * 2018-09-08 2018-11-16 赣州经纬科技股份有限公司 一种汽车用变速器驻车机构
DE102020215532A1 (de) * 2020-12-09 2022-06-09 Robert Bosch Gesellschaft mit beschränkter Haftung Elektrische Antriebseinrichtung für ein Fahrzeug und Verfahren zum Herstellen einer elektrischen Antriebseinrichtung für ein Fahrzeug

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Publication number Publication date
DE102022207485A1 (de) 2024-02-01

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