WO2015117606A1 - Masse thermique pour un embrayage à disque à structure à plis - Google Patents

Masse thermique pour un embrayage à disque à structure à plis Download PDF

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Publication number
WO2015117606A1
WO2015117606A1 PCT/DE2015/200019 DE2015200019W WO2015117606A1 WO 2015117606 A1 WO2015117606 A1 WO 2015117606A1 DE 2015200019 W DE2015200019 W DE 2015200019W WO 2015117606 A1 WO2015117606 A1 WO 2015117606A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermal mass
mass
folding
thermal
elevations
Prior art date
Application number
PCT/DE2015/200019
Other languages
German (de)
English (en)
Inventor
Michael Baumann
Viktor Wiege
David Smith
René Daikeler
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 DE112015000666.4T priority Critical patent/DE112015000666A5/de
Publication of WO2015117606A1 publication Critical patent/WO2015117606A1/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
    • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/02—Overheat protection, i.e. means for protection against overheating
    • F16D2300/021—Cooling features not provided for in group F16D13/72 or F16D25/123, e.g. heat transfer details
    • F16D2300/0212—Air cooling

Definitions

  • the invention relates to a thermal mass for a disc clutch.
  • thermal sheet metal masses usually have rectangular, U-shaped or L-shaped cross sections.
  • the known sheet-metal masses with these cross-sections have the following known limitations:
  • the thermal-mechanical behavior is such that under friction power input on one end side, the entire mass ringing takes place around a neutral fiber in the interior of the cross section, whereby a friction radius shifts as a result of a temperature rise. At the same time, this reduces the contact surface to a friction lining. Both effects lead to a reduction of the transmittable torque, especially in the case of several load entries immediately after one another. The material utilization is thus no longer optimal.
  • thermal mass for a disc clutch characterized in that the thermal mass is a folding mass, which is adapted to absorb heat generated due to friction with a clutch disc and deliver it to an environment again.
  • the folding mass is a folded plate or a mass with a folded structure.
  • the thermal mass is applied to a friction lining of a clutch disc.
  • the friction is generated between the friction lining of the clutch disk and regions of the thermal mass which are folded in the direction of the clutch disk.
  • the environment is an area surrounding the fold mass. More preferably, the environment is air or an oil.
  • the disc clutch is a single or multiple disc clutch, wherein the folding mass is configured as a pressure plate, a central plate, a counter plate, an intermediate plate or a lamination.
  • the disc clutch is made dry.
  • the folding mass has at least one fold with elevations and depressions.
  • a survey defines a high point and a depression a low point of the folding mass.
  • the folding is particularly preferably a folding of individual layers of sheet metal, preferably of sheet steel. This creates preferably at least one fold.
  • the elevations and depressions are arranged in a circle-shaped, elliptical-shaped, oval-shaped, spiral-shaped and / or epitrochoid-shaped along a circumferential direction of the folding mass.
  • the elevations or depressions are formed in the radial direction of the folding mass.
  • the elevations and depressions extend wholly or partially in the radial direction over a friction surface.
  • Diameter existing recesses are formed. These would limit the wear of the friction lining involved to local, circumferential areas. Associated with this would be an increase in the wear rate, expressed by the additional travel necessary for compressing a lining suspension of the clutch disk.
  • the folds in the circumferential direction are preferably not arranged on a constant, but on an alternating diameter.
  • the fold can also be arranged absolutely radially or inclined.
  • the folding mass has a cross section with opening angles in the range of 120 ° to 180 °.
  • an opening angle i. the orientation of the individual folds to each other, starting from a total contact, which corresponds to an opening angle of 0 °, vary or tend an opening to the friction surface.
  • Particularly preferred may be a survey about 180 ° (especially in an ellipse or oval-shaped configuration) or a survey about 120 ° (especially in a
  • Epitrochoid-shaped configuration be configured.
  • the folding mass has a thickness in a region of a fold which is less than a thickness in a region without folding.
  • the plate cross-section no longer tilts in its entirety, but in the form of its sub-elements.
  • the result is a reduced decrease in mean friction radius and an increased load bearing area under thermal stress.
  • the side facing away from the friction surface is increased by the folding, wherein a heat dissipation is improved by convection.
  • the elevations have ventilation openings.
  • the pleats can be provided by means of the ventilation openings, which do not lead to the reduction of the friction surface.
  • the folding mass is with a
  • Operating area in one piece executable.
  • a simultaneous use of the inner region as an actuator in the form of a well-known in direct-operated couplings pressure cup accomplish.
  • the customary in pressure pots straightening in the installed state for final adjustment of the airway is possible by using comparatively thin material.
  • 3a is a schematic detail view of a thermal mass according to the invention.
  • FIG. 3b shows a schematic section through the thermal mass of Fig. 3a
  • FIG. 4b is a schematic section through the thermal mass of Fig. 4a
  • FIG. 7 is a schematic view of a truncated thermal mass with ventilation openings
  • FIG. 8 shows a schematic section through a further thermal mass according to the invention
  • FIG. 9a shows a schematic illustration of a fold guide of a further alternative thermal mass according to the invention
  • FIG. 9b is a schematic section through the thermal mass of Fig. 9a
  • FIG. 10 shows a schematic representation of a fold guide of a further alternative thermal mass according to the invention
  • Fig. 11 a is a schematic representation of a folding guide another alternative inventive thermal mass
  • Fig. 11 b is a schematic representation of a folding guide another alternative inventive thermal mass.
  • Fig. 1 shows a schematic section through a known from the prior art thermal mass.
  • the thermal mass 1 is arranged on a clutch disc 6.
  • the thermal mass is designed as a movable pressure plate.
  • the clutch disc 6 has, viewed in order from left to right, a friction lining 7, a carrier plate 8, a lining suspension 9, a lining suspension 10, a carrier plate 11 and a friction lining 12.
  • a counterweight (not shown) is provided along the other side of the clutch disc 6, a counterweight (not shown) is provided.
  • the resulting heat in the friction lining 12 is transmitted in the direction of the thermal mass 1.
  • the thermal mass 1 changes its starting position and reaches a position according to the dashed line in Fig. 1.
  • this reduces a friction radius of the thermal mass 1.
  • a central friction radius 13 moves according to the temperature increase in the thermal mass 1 in leaf level from top to bottom.
  • thermal masses 1 according to FIGS. 2 to 1 1 b are designed as folding masses.
  • Fig. 2 shows a schematic section through a thermal mass according to the invention.
  • the thermal mass 1 is arranged on a clutch disc 6.
  • the thermal mass 1 is designed as a movable pressure plate.
  • the clutch disc 6 has the same structure as described in Fig. 1, on.
  • the thermal mass 1 has a folded structure and is formed as a folding mass.
  • the folding mass has elevations 2 and depressions 3, which alternate and produce multiple folds.
  • the resulting heat in the friction lining 12 is transmitted in the direction of the thermal mass 1.
  • the thermal mass 1 changes its starting position and reaches a position according to the dashed line in FIG. 2. Due to the design, an average friction radius 13 of the thermal mass 1 remains and does not change its position despite the temperature increase in the thermal mass 1. There is a uniform transfer of temperatures (heat conduction).
  • the folding of the thermal mass 1 shows an improved thermo-mechanical behavior under thermal stress, with the plate cross-section no longer tipping in its entirety but in the form of its subelements.
  • the result is a reduced decrease in mean friction radius 13 and an increased load bearing area under thermal stress.
  • FIG. 3a shows a schematic detail view of a thermal mass according to the invention and FIG. 3b shows a schematic section through the thermal mass from FIG. 3a.
  • the thermal mass 1 has rotationally symmetrical parallel to each other
  • FIG. 4a shows a schematic detail view of an alternative thermal mass according to the invention
  • FIG. 4b shows a schematic section through the thermal mass from FIG. 4a.
  • the thermal mass 1 has rotationally symmetrical parallel to each other
  • the thermal mass 1 is designed in one piece with an actuating region 14.
  • FIG. 5a shows a schematic detail view of a further alternative thermal mass according to the invention.
  • the thermal mass 1 has rotationally symmetrical parallel to each other
  • the thermal mass 1 has a cross-section, which no longer permits an opening angle between the individual folds.
  • FIG. 5b shows a schematic detail view of a further alternative thermal mass according to the invention.
  • the thermal mass 1 has rotationally symmetrical parallel to each other
  • the thermal mass 1 has a cross-section which no longer permits an opening angle between the individual folds.
  • 5c shows a schematic detail view of a further alternative thermal mass according to the invention.
  • the thermal mass 1 has rotationally symmetrical parallel to each other
  • the thermal mass 1 has a cross-section, which no longer permits an opening angle between the individual folds, the depressions 3 being made wide.
  • FIG. 6 shows a schematic detail view of a further alternative thermal mass according to the invention.
  • the thermal mass 1 has rotationally symmetrical parallel to each other
  • the thermal mass 1 has a cross-section, which no longer allows an opening angle between the individual folds, wherein the recesses 3 are made only slightly wide.
  • the drape is not at right angles to the friction surface.
  • Fig. 7 shows a schematic view of a truncated thermal mass with ventilation openings.
  • the ventilation openings 5 are distributed approximately symmetrically on the thermal mass 1 and have an oval shape. The ventilation openings 5 do not lead to the reduction of the friction surface.
  • FIG. 8 shows a schematic section through a further thermal mass according to the invention.
  • the thermal mass 1 has elevations 2 and depressions 3, which define the cross section of the thermal mass 1.
  • an opening angle 4 is established, which in the present case measures approximately 65 °.
  • FIG. 9a shows a schematic representation of a fold guide of a further alternative thermal mass according to the invention
  • FIG. 9b shows a schematic section through the thermal mass from FIG. 9a.
  • the dashed lines shown outer line and dashed lines shown inner line describe the course of the folding in the circumferential direction over the thermal mass. Both lines are oval-shaped.
  • FIG. 10 shows a schematic representation of a fold guide of a further alternative thermal mass according to the invention.
  • the dashed lines shown outer line and dashed lines shown inner line describe the course of the folding in the circumferential direction over the thermal mass. Both lines are epitrochoid-shaped.
  • FIG. 11 a shows a schematic representation of a fold guide of a further alternative thermal mass according to the invention
  • FIG. 11 b shows a schematic representation of a further fold guide of a further alternative thermal mass according to the invention.
  • both embodiments have a folding of the thermal mass 1 carried out in the radial or mainly radial direction.
  • thermo-mechanical behavior wherein the heat dissipation is improved by convection.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

La présente invention concerne une masse thermique (1) pour embrayage à disque, caractérisée en ce que la masse thermique est une masse à structure à plis qui est conçue pour absorber la chaleur générée par les frottements avec un disque d'embrayage et la dissiper dans un environnement. Cette masse à structure à plis comporte des parties saillantes et des parties en creux, et se présente sous la forme d'un plateau de pression, d'un plateau de centrage, d'un contre-plateau, d'un plateau intermédiaire ou d'une lamelle de tôle.
PCT/DE2015/200019 2014-02-05 2015-01-22 Masse thermique pour un embrayage à disque à structure à plis WO2015117606A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112015000666.4T DE112015000666A5 (de) 2014-02-05 2015-01-22 Thermische Masse für eine Scheibenkupplung mit gefalteter Struktur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014202065 2014-02-05
DE102014202065.4 2014-02-05

Publications (1)

Publication Number Publication Date
WO2015117606A1 true WO2015117606A1 (fr) 2015-08-13

Family

ID=52672145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2015/200019 WO2015117606A1 (fr) 2014-02-05 2015-01-22 Masse thermique pour un embrayage à disque à structure à plis

Country Status (2)

Country Link
DE (1) DE112015000666A5 (fr)
WO (1) WO2015117606A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020937A (en) * 1975-12-10 1977-05-03 Borg-Warner Corporation Fabricated clutch pressure plate
DE2758366A1 (de) * 1976-12-27 1978-06-29 Borg Warner Kupplungsdruckplatte und verfahren zu deren herstellung
CN103133577A (zh) * 2011-11-30 2013-06-05 舍弗勒技术股份两合公司 离合器的摩擦盘

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020937A (en) * 1975-12-10 1977-05-03 Borg-Warner Corporation Fabricated clutch pressure plate
DE2758366A1 (de) * 1976-12-27 1978-06-29 Borg Warner Kupplungsdruckplatte und verfahren zu deren herstellung
CN103133577A (zh) * 2011-11-30 2013-06-05 舍弗勒技术股份两合公司 离合器的摩擦盘

Also Published As

Publication number Publication date
DE112015000666A5 (de) 2016-12-08

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