WO2022156840A1 - Lamelle de friction avec motif de rainures formé par un patin de garniture de friction - Google Patents

Lamelle de friction avec motif de rainures formé par un patin de garniture de friction Download PDF

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Publication number
WO2022156840A1
WO2022156840A1 PCT/DE2021/100948 DE2021100948W WO2022156840A1 WO 2022156840 A1 WO2022156840 A1 WO 2022156840A1 DE 2021100948 W DE2021100948 W DE 2021100948W WO 2022156840 A1 WO2022156840 A1 WO 2022156840A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove pattern
pad
friction lining
friction
pads
Prior art date
Application number
PCT/DE2021/100948
Other languages
German (de)
English (en)
Inventor
Benjamin Baerwald
Christian DENDA
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 CN202180091106.5A priority Critical patent/CN116783403A/zh
Publication of WO2022156840A1 publication Critical patent/WO2022156840A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/648—Clutch-plates; Clutch-lamellae for clutches with multiple lamellae
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • 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
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples

Definitions

  • the invention relates to a groove pattern for friction plates with the features according to the preamble of claim 1.
  • EP 20 66 911 B1 discloses friction disks with a Y-shaped groove pattern distributed over the circumference in the radial direction.
  • WO 2018 171 834 A1 and WO 2018 171 835 A1 disclose a pad geometry made up of pentagonal friction lining pads.
  • the invention is based on the object of minimizing the drag losses in friction discs by means of a suitable groove pattern (cf. FIG. 2).
  • the groove pattern according to the invention for friction disks therefore provides that the groove pattern is formed by means of friction lining pads and the friction lining pads have a pentagonal shape, with the corners being rounded off.
  • the pentagonal shape of the friction lining pads is basically composed of a rectangle and an isosceles triangle with a base that coincides with one side of the rectangle.
  • a preferred embodiment of the groove pattern is characterized in that all five pad interior angles have a degree of between 85 and 135 degrees. Included in each pad corner is a pad interior angle.
  • a further preferred exemplary embodiment of the groove pattern is characterized in that all 5 pad corners are rounded along the peripheral contour. This has proven advantageous with regard to the flow around the friction lining pads.
  • Another preferred exemplary embodiment of the groove pattern is characterized in that the rounding radii in the pad corners are greater than or equal to one millimeter. This has proven advantageous with regard to the flow around the friction lining pads.
  • a further preferred exemplary embodiment of the groove pattern is characterized in that identical or almost identical friction lining pads are arranged in a two-row pad design.
  • all of the friction lining pads are of substantially the same shape and size.
  • Friction lining pads arranged in a radially inner row are advantageously directed radially outwards with their tips.
  • Friction lining pads arranged in a radially outer row are advantageously directed radially inwards with their tips.
  • the friction lining pads arranged in two rows are offset from one another in the circumferential direction in such a way that essentially Y-shaped grooves result between the friction lining pads.
  • each tip of a friction lining pad is assigned a branching point which is spaced apart in the radial direction from an inner or outer peripheral edge of the groove pattern.
  • the friction lining pads have widths and heights that have a width to height ratio that is less than two for each friction lining pad.
  • the width-to-height ratio of the friction lining pads is preferably between 1.5 and 1.7. This The width-to-height ratio advantageously applies both to so-called inner pads arranged in an inner row and to so-called outer pads arranged in an outer row.
  • the groove pattern has inner webs with a width or a cross section that is smaller than twice the width or twice the cross section of branching intermediate grooves, which in turn is smaller, in particular narrower, i.e. less wide than the outer ridges of the groove pattern.
  • the friction lining pads are preferably designed and arranged in the groove pattern in such a way that the cross-section through which flow occurs in the groove pattern is reduced by ten percent from the outside to the inside.
  • a further preferred exemplary embodiment of the groove pattern is characterized in that the groove angles of the intermediate grooves are between 90 and 100 degrees.
  • a particularly preferred groove angle of the intermediate grooves is 90.2 degrees.
  • a further preferred exemplary embodiment of the groove pattern is characterized in that the outer webs have a radial extension that makes up 10 percent to 20 percent of the radial extension of the groove pattern.
  • the outer webs particularly advantageously have a radial extent of 13.5 percent of the radial extent of the groove pattern.
  • the invention also relates to a friction lining pad for a groove pattern as described above.
  • the friction lining pads can be traded separately.
  • FIG. 4 dimensioning of the groove design according to the invention
  • FIG. 5 dimensioning of the groove design according to the invention
  • FIG. 6 dimensioning of the groove design according to the invention
  • FIG. 7 An inner pad of the groove design according to the invention
  • FIG. 8 An outer pad of the groove design according to the invention
  • branching angle (8) is between 90° and 100°, preferably 90.2°.
  • the cross-section of the groove increases from the inside to the outside (5)(6)(7) (diffuser effect) and creates an additional pressure reduction in the groove and thus shifts the intake of air to low speeds. The drag torque can thus be further reduced.
  • FIG. 1 three Cartesian coordinate diagrams are shown one above the other.
  • a speed during operation of the wet-running multi-plate clutch 1 with the friction part 15 is plotted in a suitable unit on an x-axis 20 .
  • a volume flow is plotted in a suitable unit on a y-axis 21 .
  • a gap filling degree is plotted in a suitable unit on a y-axis 22 .
  • a drag torque is plotted in a suitable unit on a y-axis 23 .
  • FIG. 1 illustrates how an air intake 26 occurs as a result of a conveyed volume flow 24 if this exceeds the supplied volume flow 25 . From this limit, the degree of gap filling 26 decreases and the lubricating gap between the lamellae contains air. Above this limit, a supplied volume flow contains 25 air. The bottom of FIG. 2 shows that the intake of air 26 occurs at a maximum drag torque 27 .
  • FIG. 2 shows how the air intake 28 is shifted to a low speed in a drag torque curve 30 with the stressed friction part 15 .
  • the conveying effect of the cooling and/or lubricating medium can be improved by the groove pattern shown in FIG.
  • FIG. 3 shows a groove pattern 10 according to the invention, which is also referred to as a groove design.
  • the groove pattern 10 includes friction lining pads 11 to 17 which are arranged in two rows on a carrier plate 18 .
  • the carrier disk 18 with the friction lining pads 11 to 17 is referred to as the friction disk 19 .
  • the friction lining pads 11 to 17 all have a pentagonal shape with rounded corners.
  • the friction lining pads 15 to 17 are arranged in a radially inner row, while the friction lining pads 11 to 14 are arranged in a radially outer row of the groove pattern 10, which is designed in two rows. Tips of the friction lining pads 15 to 17 are directed radially outwards. Tips of the friction lining pads 11 to 14 are directed radially inwards.
  • a friction lining pad 40 with five corners 31 to 35 and five sides 41 to 45 is shown in FIG. 9 to illustrate the terminology.
  • all corners of the friction lining pads 11 to 17 are rounded.
  • the corners 31 to 35 each enclose an interior angle.
  • the size of the interior angles and also the size of the rounding radii in the corners 31 to 35 are described below with regard to the groove pattern 10 claimed.
  • the friction lining pad 12 is shown enlarged in FIG.
  • Reference number 1 designates three pad interior angles.
  • the size of the pad interior angles 1 can vary between 85 and 135 degrees.
  • All rounding radii in the corners of the friction lining pad 12 are denoted by 2 in FIG.
  • a width of the friction lining pad 12 is denoted by 3 .
  • a height of the friction lining pads 12 is denoted by 4 .
  • a ratio of the widths 3 to the heights 4 of the friction lining pads 12 is preferably less than two.
  • the width/height ratio of the friction lining pads is preferably between 1.5 and 1.7.
  • the width of an inner web between the friction lining pads 15 and 16 is indicated by a double arrow 5 in FIG.
  • the width of an outer web between the friction lining pads 11 and 12 is indicated by a double arrow 7 .
  • the inner webs 5 of the groove pattern 10 are connected to the outer webs 7 by intermediate grooves 6 .
  • a groove angle between two intermediate webs 6 is denoted by 8 .
  • a radial extension of the outer web between the friction lining pads 11 and 12 is represented by a double arrow 9 .
  • the inner web is wider than the intermediate grooves 6. However, the width 5 of the inner web is smaller than twice the width of the intermediate grooves 6.
  • the outer webs 7 have a width which is greater than twice the width of the intermediate grooves 6. From radially outward to radially inward, a reduction of ten percent is aimed for in groove pattern 10.
  • the groove angle 8 between the intermediate grooves 6 is preferably between 90 and 100 degrees, preferably 90.2 degrees.
  • the radial extent 9 of the outer groove is preferably between 10 and 20 percent of the radial extent of the groove pattern 10, preferably 13.5 percent of the radial extent of the groove pattern 10.
  • the friction lining pad 15 shown in FIG. 7 is also referred to as the inner pad because it is arranged in the inner row of the two-row groove pattern.
  • the friction lining pad 12 shown in FIG. 8 is also referred to as the outer pad.
  • Interior angles are indicated by double arrows 51 to 56 in FIGS. The degrees of the interior angles 51 to 56 are 90.366 in the order mentioned; 93.2; 131.6; 96.8; 86.8; 134.8 degrees.

Landscapes

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

Abstract

L'invention concerne un patin (11, 12, 13, 15, 16) de garniture de friction à cinq sommets doté de cinq coins arrondis de patin. Une lamelle de friction comprend une lamelle d'appui et à cinq sommets patins (11, 12, 13, 15, 16) de garniture de friction. Un motif (10) de rainures est formé par la lamelle d'appui et les patins (11, 12, 13, 15, 16) de garniture de friction, qui sont disposés en deux rangées, des toiles intérieures (5) et des toiles extérieures (6) de lamelle d'appui disposées entre les patins (11, 12, 13, 15, 16) de garniture de friction formant des rainures radiales, et des rainures intermédiaires (6) étant disposées entre les rainures radiales.
PCT/DE2021/100948 2021-01-22 2021-11-30 Lamelle de friction avec motif de rainures formé par un patin de garniture de friction WO2022156840A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180091106.5A CN116783403A (zh) 2021-01-22 2021-11-30 具有借助于摩擦衬垫形成的槽图案的摩擦片

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102021101322 2021-01-22
DE102021101322.4 2021-01-22
DE102021103682 2021-02-17
DE102021103682.8 2021-02-17

Publications (1)

Publication Number Publication Date
WO2022156840A1 true WO2022156840A1 (fr) 2022-07-28

Family

ID=79024061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2021/100948 WO2022156840A1 (fr) 2021-01-22 2021-11-30 Lamelle de friction avec motif de rainures formé par un patin de garniture de friction

Country Status (2)

Country Link
DE (1) DE102021131361A1 (fr)
WO (1) WO2022156840A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045456A1 (de) * 2006-09-26 2008-04-03 Borgwarner Inc., Auburn Hills Reibteil für eine reibschlüssig arbeitende Einrichtung und reibschlüssig arbeitende Einrichtung mit einem solchen Reibteil
US20140054125A1 (en) * 2012-08-27 2014-02-27 GM Global Technology Operations LLC Tabbed clutch plates
US20180106299A1 (en) * 2016-10-14 2018-04-19 Ford Global Technologies, Llc Clutch plate separation for drag loss reduction
WO2018171834A1 (fr) 2017-03-21 2018-09-27 Schaeffler Technologies AG & Co. KG Élément de friction
WO2018171835A1 (fr) 2017-03-21 2018-09-27 Schaeffler Technologies AG & Co. KG Élément de friction
US20190249737A1 (en) * 2016-09-08 2019-08-15 Aisin Kako Kabushiki Kaisha Wet friction material
DE102018105215A1 (de) * 2018-03-07 2019-09-12 Schaeffler Technologies AG & Co. KG Reibteil

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045456A1 (de) * 2006-09-26 2008-04-03 Borgwarner Inc., Auburn Hills Reibteil für eine reibschlüssig arbeitende Einrichtung und reibschlüssig arbeitende Einrichtung mit einem solchen Reibteil
EP2066911B1 (fr) 2006-09-26 2014-04-16 BorgWarner, Inc. Élément de friction pour un dispositif travaillant par friction et dispositif travaillant par friction doté d'un tel élément de friction
US20140054125A1 (en) * 2012-08-27 2014-02-27 GM Global Technology Operations LLC Tabbed clutch plates
US20190249737A1 (en) * 2016-09-08 2019-08-15 Aisin Kako Kabushiki Kaisha Wet friction material
US20180106299A1 (en) * 2016-10-14 2018-04-19 Ford Global Technologies, Llc Clutch plate separation for drag loss reduction
WO2018171834A1 (fr) 2017-03-21 2018-09-27 Schaeffler Technologies AG & Co. KG Élément de friction
WO2018171835A1 (fr) 2017-03-21 2018-09-27 Schaeffler Technologies AG & Co. KG Élément de friction
DE102018105215A1 (de) * 2018-03-07 2019-09-12 Schaeffler Technologies AG & Co. KG Reibteil

Also Published As

Publication number Publication date
DE102021131361A1 (de) 2022-07-28

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