EP4153878A1 - Drehmomentübertragungseinrichtung - Google Patents
DrehmomentübertragungseinrichtungInfo
- Publication number
- EP4153878A1 EP4153878A1 EP21727095.8A EP21727095A EP4153878A1 EP 4153878 A1 EP4153878 A1 EP 4153878A1 EP 21727095 A EP21727095 A EP 21727095A EP 4153878 A1 EP4153878 A1 EP 4153878A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- input element
- limiting device
- input
- output
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 238000004146 energy storage Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000036316 preload Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
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
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
- F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
-
- 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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0084—Assembly or disassembly
-
- 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
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
- F16F15/1297—Overload protection, i.e. means for limiting torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- the invention relates to a torque transmission device, in particular for the drive train of a motor vehicle, comprising an input element and an output element, which are rotatable relative to one another via an energy storage device and about a common axis of rotation and wherein a torque limiting device is arranged between the input element and the output element, the torque limiting device being designed To transmit a torque between the input element and output element below a torque value and to transmit at least partially, in particular completely, no torque above the torque value.
- the invention further relates to a method for producing a torque transmission device, in particular for the drive train of a motor vehicle, comprising the steps
- a known torque transmission device has become known, for example, from DE 102012 211 990 A1.
- the torque transmission device in particular for a drive train of an internal combustion engine vehicle, has an input part and an output part with a common axis of rotation about which the input part and the output part can be rotated together and rotated to a limited extent relative to one another, at least one energy store effective between the input part and the output part, which is located on the input part on the one hand and on the other hand is supported on the output part, and a kinematically arranged between the at least one energy store and the input part or the output part torque limiting device, in which the torque limiting device has a support section on which the at least one energy store is supported and which is formed on the input part or on the output part.
- Support section under deflection enables a release of the support section from the input part or from the output part.
- An object of the present invention is therefore to provide a torque transmission device that allows a limitation of torque peaks, is at the same time simple in construction and inexpensive to manufacture, and works safely and accurately.
- Another object of the present invention is to provide an alternative torque transmission device and an alternative method for producing a torque transmission device.
- the present invention solves the above-mentioned objects with an embodiment in the form of a torque transmission device for the drive train of a motor vehicle, comprising an input element and a cover element connected in a rotationally fixed manner to the input element, as well as an output element, where- in which the output element and the input element are rotatable relative to one another via an energy storage device and about a common axis of rotation A and wherein a torque limiting device is arranged between the input element and the output element, the torque limiting device being designed to transmit a torque between the input element and the output element up to a torque limit value and at to transmit at least partial torque or completely no torque when the torque limit value is exceeded, the torque limiting device being connected to the energy storage device via a non-positive and / or positive connection, and to the input element via a first frictional connection and to the cover element via a second frictional connection Connection is connected, wherein the torque limiting device comprises an axially pretensioned element for providing the frictional connections, wherein ei the prestress
- the present invention solves the above-mentioned objects with an embodiment in the form of a method for producing a torque transmission device for the drive train of a motor vehicle, comprising
- the torque limiting device Arranging the torque limiting device between the input element and the output element, the torque limiting device being designed to transmit a torque between the input element and the output element below a torque value and at least partially not to transmit any torque above the torque value,
- the contact elements are formed from the pretensioned element and / or are provided as additional elements on the pretensioning element.
- the prestressing element can preferably be made of a resilient material, such as spring steel sheet.
- the Vorspannele element is L-shaped when viewed in cross section. This shape can preferably take place by means of a forming process. It can also be used in this forming process at the same time it is provided that the contact elements are also formed from the spring steel sheet.
- the contact elements can, however, also be attached to the prestressing element subsequently as an additional part.
- the axial preloading element can also provide a radial centering surface radially on the inside, and the input element providing at least three corresponding radial bearing elements evenly distributed over the circumference. Three bearing elements evenly distributed around the circumference are particularly suitable for radial centering. Since the torque transmission device provides a viscous medium for lubrication, the viscous medium can get particularly well between the radial centering surface of the preloaded element and the bearing elements, since the centering surface is not continuous but interrupted by the individually provided bearing elements, and thus the viscous medium always returns the radial centering surface can reach.
- the radial bearing elements can be formed from the input element and / or attached to the input element as additional elements.
- FIG. 1 shows in schematic form FIG. 1, in cross section, a torque transmission device according to an embodiment of the present invention
- FIG. 2 shows a section in the area of the contact elements
- FIG. 3 shows a section in the area of the connection between the input element and the cover element
- FIG. 4 is a plan view of the prestressing element with contact elements
- FIG. 5 like FIG. 1, only with regard to setting the pretensioning force of the pretensioned element
- FIG. 6 steps of a method according to an embodiment of the present invention.
- Figure 1 shows in cross section a torque transmission device according to an embodiment of the present invention.
- Figure 1 shows a torque transmission device 1 in the form of a torsion damper with an input part 2 in the form of a primary flywheel and an output part 3 mentioned here in the form of a hub disk.
- the primary flywheel 2 and the hub disk 3 are rotatable relative to one another via an energy storage device 4 and about a common axis of rotation A.
- a torque limiting device 10 is arranged between the primary flywheel 2 and the energy storage device 4, the torque limiting device 10 being designed to transmit the torque between the primary flywheel 2 and the hub disk 3 until a limit torque is reached and at least partially to transmit no torque when the limit torque is exceeded.
- the torque limiting device 10 has an axially prestressed, essentially pot-shaped element 5 which is frictionally clamped by an axial prestress FA between the input element 2 and the cover element 16.
- pretensioning element 5 here with reference to FIGS. 2 and 4 contacts are evenly distributed over the circumference.
- These contact elements 17a, 17b, 17c, 17d, 17e, 17f form a first frictional connection 9 to the input element 2 5 molded.
- a second frictional connec tion 14 is formed with the cover element 16.
- a circumferentially extending radial centering surface 19 is provided radially on the inside of the prestressing element 5 and is radially centered on corresponding radial bearing elements 21 of the input element 2.
- a torque between the input element 2 and the output element 3 is transmitted below a predeterminable maximum torque, for example by selecting the materials and / or the axial preload.
- the frictional connection provided by the axial preload is canceled; only a slight or no torque is introduced into the energy storage device 4.
- damage to the torque transmission device 1 and also further in the subsequent drive train can be avoided.
- the pretensioning element 5 is axially pretensioned by means of a cover element 16 which, on the output side, next to the primary flywheel 2, forms a toroidal space 11 for the energy storage device 4 arranged in the direction of rotation.
- the prestressing element 5 also provides a non-positive and / or positive connection 8 in order to control the energy store 4.
- FIG. 2 shows a section in the area of the contact elements. It can be clearly seen here that the contact element 17 was formed out of the preloading element 5 and that it forms the first frictional connection with the input element 2.
- the radial centering surface 19, which is directed towards the radial bearing elements 21, can also be clearly seen here.
- FIG. 3 shows a section in the area of the connection between the input element 3 and the cover element 16.
- a collar 24 is provided on the input element 3, which collar extends axially.
- the prestressing element 5 with reference to FIG. 1
- the cover element 16 can be displaced in the axial direction along the collar 24.
- a precisely defined pre-tensioning force FA can be set. This is particularly important for the actual function of the slipping of the prestressing element 5.
- the cover element 16 is advantageously connected to the input element by means of a weld 30.
- FIG. 4 shows a plan view of the prestressing element 5 with the contact elements 17a, 17b, 17c, 17d, 17e, 17f.
- 6 contact elements are evenly distributed around the circumference.
- a distance at an angle ⁇ is provided between the contact elements 17a, 17b, 17c, 17d, 17e, 17f.
- an existing viscous medium can intervene and ensure a permanent function of slipping when a limit torque is exceeded.
- the number of contact elements can vary and that the distance between the contact elements can also be non-uniform.
- FIG. 5 shows a representation like FIG. 1, only with regard to the setting of the pre-tensioning force FA of the pre-tensioning element 5. Due to actio equals reactio, the same pre-tensioning force FA is established on the first frictional connection 9 as on the second frictional connection 14.
- FIG. 6 shows steps of a method according to an embodiment of the preceding invention.
- the procedure consists of the following steps
- a first step S1 an input element is provided.
- step S2 an output element is provided.
- step S3 an energy storage device is provided.
- a torque limiting device is provided, the torque limiting device being designed to transmit a torque up to a torque limit value and to transmit at least partially or no torque at all when the torque limit value is exceeded.
- step S5 the cover element is provided.
- the input element and output element are arranged relative to one another via the energy storage device and rotatable about a common axis of rotation.
- the torque limiting device is arranged between the input element and the output element.
- the torque limiting device is connected to the energy storage device via a non-positive and / or positive connection and to the input element via a frictional connection.
- At least one of the embodiments of the invention has at least one of the following advantages:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Friction Gearing (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020206189.0A DE102020206189A1 (de) | 2020-05-18 | 2020-05-18 | Drehmomentübertragungseinrichtung |
| PCT/EP2021/062600 WO2021233755A1 (de) | 2020-05-18 | 2021-05-12 | Drehmomentübertragungseinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4153878A1 true EP4153878A1 (de) | 2023-03-29 |
Family
ID=76059867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21727095.8A Withdrawn EP4153878A1 (de) | 2020-05-18 | 2021-05-12 | Drehmomentübertragungseinrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20230184298A1 (de) |
| EP (1) | EP4153878A1 (de) |
| CN (1) | CN115667745A (de) |
| DE (1) | DE102020206189A1 (de) |
| WO (1) | WO2021233755A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777843A (en) * | 1987-06-05 | 1988-10-18 | Eaton Corporation | Two mass flywheel assembly with viscous damping assembly |
| GB2239928B (en) * | 1989-12-21 | 1993-06-30 | Luk Lamellen & Kupplungsbau | Apparatus for damping torsion vibrations |
| DE102012211990A1 (de) | 2011-08-08 | 2013-02-14 | Schaeffler Technologies AG & Co. KG | Drehmomentübertragungseinrichtung |
| DE102012208268A1 (de) | 2012-05-16 | 2013-11-21 | Schaeffler Technologies AG & Co. KG | Zweimassenschwungrad |
| DE102014220404A1 (de) * | 2014-10-08 | 2016-04-14 | Schaeffler Technologies AG & Co. KG | Drehmomentübertragungseinrichtung |
| DE102018123744A1 (de) * | 2017-10-30 | 2019-05-02 | Schaeffler Technologies AG & Co. KG | Drehmomentübertragungseinrichtung |
-
2020
- 2020-05-18 DE DE102020206189.0A patent/DE102020206189A1/de not_active Withdrawn
-
2021
- 2021-05-12 EP EP21727095.8A patent/EP4153878A1/de not_active Withdrawn
- 2021-05-12 US US17/924,007 patent/US20230184298A1/en not_active Abandoned
- 2021-05-12 CN CN202180035759.1A patent/CN115667745A/zh active Pending
- 2021-05-12 WO PCT/EP2021/062600 patent/WO2021233755A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020206189A1 (de) | 2021-11-18 |
| CN115667745A (zh) | 2023-01-31 |
| WO2021233755A1 (de) | 2021-11-25 |
| US20230184298A1 (en) | 2023-06-15 |
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