WO2008043330A1 - Kraftübertragungseinrichtung - Google Patents
Kraftübertragungseinrichtung Download PDFInfo
- Publication number
- WO2008043330A1 WO2008043330A1 PCT/DE2007/001652 DE2007001652W WO2008043330A1 WO 2008043330 A1 WO2008043330 A1 WO 2008043330A1 DE 2007001652 W DE2007001652 W DE 2007001652W WO 2008043330 A1 WO2008043330 A1 WO 2008043330A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- output
- thrust washer
- transmission device
- power transmission
- piston element
- 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.)
- Ceased
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
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
-
- 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
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
- F16H2045/0294—Single disk type lock-up clutch, i.e. using a single disc engaged between friction members
Definitions
- the invention relates to a power transmission device, in detail with the features of the preamble of claim 1.
- the individual power transmission device comprises a hydrodynamic component with at least one impeller and a turbine wheel, preferably at least as a hydrodynamic torque converter and at least one stator and a device for bypassing the power flow via the hydrodynamic component, usually in the form of a so-called lock-up clutch.
- Such power transmission devices are characterized in that they have an input and an output, further, the hydrodynamic component with its impeller at least indirectly rotatably connected to the input and the turbine wheel is at least indirectly rotatably connected to the output. At least indirectly, this means that the connection takes place either directly or via further transmission elements.
- the coupling with the output is usually rotationally fixed with a with the output shaft, which is formed by the transmission input shaft of a downstream gear unit, connected hub member.
- the lock-up clutch is usually designed as a friction clutch and comprises a first friction surface arrangement and a second friction surface arrangement, wherein both can be brought into operative connection with one another via an actuating device.
- the friction clutch is designed as a simple disc clutch, wherein a first coupling element is non-rotatably coupled to the input or the connection between the input and impeller of the hydrodynamic component, while the second is preferably connected directly to the piston member directly rotatably. In this case, the power is transmitted via the piston, which is then part of the friction clutch.
- the actuator is rotationally fixed, but slidably connected in the axial direction to the output.
- the coupling between the piston element and the output is pressure and liquid-tight, so that there is no resource exchange between the individual chambers in the power transmission device via this connection. This is realized via a seal between the piston element and the non-rotatably coupled to the output element or the output itself.
- the piston element is used in a two-channel guided thereby by the pressure in the hydrodynamic component.
- the support is preferably carried out directly on the rotatably coupled to the output element.
- a corresponding thrust washer is provided between the piston member and the rotatably coupled to the output member. This is arranged in the axial direction next to the piston element and is guided on the E-lement rotatably coupled to the output.
- the piston element is largely flat in the area of a possible contact with the thrust washer.
- the required support region with radially oriented support surface is formed by a collar directed away in the axial direction from the hydrodynamic component. This requires an additional space requirement in the axial direction, so that here the non-rotatably coupled to the output element, which also serves as a rule also in the form of an output hub of the rotationally fixed connection of the turbine, relatively wide builds.
- the invention therefore an object of the invention to find a space-saving arrangement for the individual components of a power transmission device, in particular in the connection region between the turbine and the output.
- the solution according to the invention should be characterized by the lowest possible design and manufacturing expense.
- a power transmission device comprising an input and an output and a hydrodynamic component disposed therebetween, preferably in the form of a hydrodynamic speed / torque converter and means for at least partially bypassing the hydrodynamic power flow in the form of a lock-up clutch comprising a first friction surface arrangement and a second friction surface arrangement can be brought into operative connection with each other, comprises an actuating device which acts on the two friction surface arrangements.
- the actuating device comprises at least one piston element which is displaceable in the axial direction but at least indirectly rotationally fixed with the output, that is to say directly or via a further intermediate element in the form of a rotating test coupled to the output element, for example, a hub is connectable.
- the thrust washer is considered in the installed position in the axial direction offset in the region of the axial extent of the piston member, for which the thrust washer in the radial direction is no longer supported directly on the output or non-rotatably coupled to the output element, but the support and the axial Guidance now takes place directly on the piston element.
- the piston member has a projection or collar formed in the axial direction, which serves depending on the embodiment of the support of the thrust washer in the radial direction in the region of the outer circumference or the inner circumference.
- the guide function is taken over by a guide surface on the piston element, which is embodied on the projection forming the sealing functional surface.
- this projection or collar is characterized by a functional concentration with its two surfaces facing away from each other. Sealing function and guide function for the thrust washer can be arranged in the radial direction, so to speak, one above the other.
- the thrust washer is thus according to the invention no longer next to the piston member directly on the output hub, that is performed on the non-rotatably coupled to the output element, but on the piston element itself.
- the non-rotatably coupled to the output element in its axial extent to the width of the thrust washer be carried out with a smaller width.
- the thrust washer so the already existing and otherwise unused space is used in the axial direction, which results from the shape of the piston member and is ready.
- the piston element is designed as a shaped sheet metal part and has in the radially inner region a directed in the installed position in the direction of the hydrodynamic component projection.
- This projection forms on the one hand, with its surface directed toward the axis of rotation or one surface region, a sealing functional surface which, in addition to the rotationally fixed coupling, also has a sealing function.
- the piston element forms with its in the installed position in the direction of the hydrodynamic component and thus the thrust washer surface area from a stop surface, which comes to the thrust washer to the stop.
- the thrust washer on the collar-like extension while the stop surface is taken into account, in particular the displacement.
- the element which is coupled non-rotatably to the output is provided in the region of the surface facing the piston element, in particular the surface facing the collar, with a circumferential direction.
- a - running groove-like depression provided, which serves in the axial direction of the recording of the end portion of the collar and thus of the axially formed projection.
- the piston element itself is preferably formed as a sheet-metal shaped part and adapted in its contour to the shape of the adjacent components substantially, other designs or the choice of other materials are conceivable.
- the solution according to the invention is suitable for use in motor vehicles.
- Figure 1 illustrates in a schematic simplified representation of the basic structure of a power transmission device with an inventive arrangement of a start-up disc
- Figure 2 illustrates a particularly advantageous structural design of a erfindungsge MAESSEN arrangement of a thrust washer.
- FIG. 1 shows in schematic simplified representation the basic structure of a power transmission device 1, comprising an input E and an output A.
- the power transmission device 1 further comprises a hydrodynamic component 2, here in a particularly preferred embodiment a hydrodynamic speed / torque converter 3 and one of the hydrodynamic Component 2 associated device 4 for bypassing the hydrodynamic power flow in the form of a lock-up clutch 5.
- This is designed as a friction clutch and comprises a first friction surface 6 and a second friction surface 7, which are engageable with each other via an actuating device 8 in operative connection.
- the actuator comprises for this purpose a piston member 9.
- the piston member 9 is at least indirectly mounted on the output A, that is rotatably connected thereto and formed relative to this in the axial direction displaceable.
- the hydrodynamic component 2 comprises at least one primary impeller P acting as a pump impeller, a secondary impeller T acting as a turbine wheel, and at least one stator impeller L as the hydrodynamic speed / torque converter 3.
- the pump impeller P is at least indirectly connected in a rotationally fixed manner to the input E of the power transmission device 1
- the turbine wheel T is at least indirectly rotatably coupled to the output A of the power transmission device 1.
- the coupling can be designed in various ways. In the The coupling generally takes place via a so-called output hub 10, not shown in detail in FIG. 1, with which the turbine wheel T is at least indirectly non-rotatable, that is to say directly rotationally fixed or via a further intermediate element or a functional unit, for example a device for damping vibrations is.
- the output hub in turn is non-rotatably coupled to the output A.
- the lock-up clutch 5, in particular the first friction surface 6, is at least indirectly non-rotatably connected to the input E of the power transmission device or the connection between the input E of the power transmission device 1 and the impeller P.
- the coupling is usually carried out on a rotatably connected to the impeller housing shell 11.
- the second friction surface assembly 7 is at least indirectly rotatably connected to the output A.
- the coupling also takes place here via the output hub 10.
- the piston element 9 forms the second friction surface arrangement 7, so that the lockup clutch 5 is quasi designed as a simple disc clutch, comprising a first coupling element rotatably coupled to the connection between input E and impeller P.
- a thrust washer 14 is arranged on the output hub 10 between its end face 12 directed toward the hydrodynamic component and an axial end face 13 directed away from the hydrodynamic component 2.
- the thrust washer 14 is arranged in the axial direction within the range of the axial extent of the piston member 9 and is guided on this.
- the embodiment according to the invention is characterized in that on the one hand the arrangement of the thrust washer 14 is carried out to a smallest possible diameter d m i n , which is equal to or greater than a diameter d F , which describes the position of a guide surface 30 on the piston member 9 and further by the arrangement between piston member 9 and output hub 10 a particularly space-saving design can be realized.
- FIG. 2 illustrates the design according to the invention of the arrangement of a thrust washer 14 in the axial direction between the piston element 9 and the output hub 10 on the basis of a detail according to FIG. 1.
- the piston element 9 is tightly guided relative to the output hub 10.
- the piston element 9 in the radial direction in the inner region, in particular in the support region a collar 15 which has a directed to the axis of rotation R of the power transmission device 1 surface 16 and with a pointing away in the radial direction of the axis of rotation surface 17 on the output hub 10 a Pairing of sliding surfaces 18 forms, whereby the surface pairing 16 and 17 at the same time also sealing function with über- takes.
- the surface 16 cooperates with a in a groove 19 on the output hub 10, arranged seal.
- the surface 16 acts as a sealing function surface.
- the thrust washer 14 is arranged in the axial direction between the piston element 9 and the output hub 10. According to the invention, the arrangement is effected in such a way that piston element 9 and thrust washer 14 are not arranged next to one another in the axial direction, but the thrust washer 14, viewed in the axial direction, is moved in the region of the axial extension of piston element 9.
- the thrust washer 14 is no longer characterized by an inner diameter d
- Such a surface 20 is formed parallel to the surface 16 on the collar 15 and anyway present due to the required formation of the sealing and sliding pair 18.
- the thrust washer 14 is thus in the axial arrangement in the region of the axial extent of the piston member 9 on the output hub 10th added.
- This offset is achieved by increasing the inner diameter dn 4 of the thrust washer 14. Due to the geometry of the piston member, in particular the orientation of the piston sheet collar 15, which is arranged in the radially inner end portion 21 of the piston member 9, and the adjoining region of the piston element can thus In the axial direction otherwise required space in juxtaposition of thrust washer 14 and piston member 9 can be saved.
- the region adjoining the radially inner region 21 simultaneously forms a piston-side contact surface 22 or stop for the thrust washer 14.
- the contact surface 22 and the collar 15 are aligned in the same direction, that is, toward the hydrodynamic component 2 and from the piston surface 12. which forms a chamber 23 with the housing shell 11, directed away.
- the hub 10 is aligned with a circumferentially aligned circumferential axial recess 24 executed, wherein the axial recess 24 is formed on the vertical surface 25 to the sealing function surface 16,
- the surface 25 forms in the axial direction the hub-side stop for the thrust washer 14.
- the thrust washer 14 is formed as an annular disk-shaped element, which by an inner and outer diameter dn 4 and ⁇ AM is characterized.
- the inner diameter is determined as a function of the outer diameter of the direction away from the axis of rotation R surface 20 on the collar 15 of the piston member 9.
- the output hub 10 is rotatably connected to the output A.
- the stator L is mounted for example via a freewheel F on the support shaft 27, which in turn is rotatably supported at a relative speed to the output shaft A on this.
- the connection of the turbine wheel T takes place in a rotationally fixed manner to the output hub 10.
- the output hub 10 has a region 28 aligned in the radial direction, which forms a contact or flange surface 29 for coupling to the turbine wheel T.
- the arrangement of the thrust washer 14 in the radially inner region of the piston element 9 represents a particularly advantageous embodiment in terms of material requirements and required space.
- the arrangement is also here in the region of the collar 15 of the piston member 9 supporting surface. It would also be conceivable to displace the thrust washer 14 into the axial extension and thus the already available installation space for the piston element 9 by enlarging the inner diameter and arrangement on a corresponding axially aligned guide element on the piston element 9.
- a further embodiment in this regard is the guide element in the radial direction to move further out and possibly to use by the shape of the piston member certain other larger radial regions and axial regions, in which case, the hub would be carried out in the radial direction according to an enlarged outer diameter to the required contact surface to form the directed away from the hydrodynamic component end face.
- the thrust washer 14 is preferably made of a Kunststoffbautei! or made of a steel component with appropriate coating. Other possibilities are conceivable. It is crucial that the thrust washer 14, if possible, at least partially flat support of the piston member to the hub 10 is used.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112007002234T DE112007002234A5 (de) | 2006-10-09 | 2007-09-13 | Kraftübertragungseinrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006047643 | 2006-10-09 | ||
| DE102006047643.3 | 2006-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008043330A1 true WO2008043330A1 (de) | 2008-04-17 |
Family
ID=38895961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2007/001652 Ceased WO2008043330A1 (de) | 2006-10-09 | 2007-09-13 | Kraftübertragungseinrichtung |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE112007002234A5 (de) |
| WO (1) | WO2008043330A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10117746A1 (de) * | 2000-04-28 | 2001-11-22 | Luk Lamellen & Kupplungsbau | Drehmomentübertragungseinrichtung |
| US6926131B1 (en) * | 1999-07-27 | 2005-08-09 | Valeo | Hydrokinetic coupling appliance, in particular for motor vehicle |
| WO2007140756A2 (de) * | 2006-06-07 | 2007-12-13 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehmomentübertragungseinrichtung |
-
2007
- 2007-09-13 DE DE112007002234T patent/DE112007002234A5/de not_active Withdrawn
- 2007-09-13 WO PCT/DE2007/001652 patent/WO2008043330A1/de not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6926131B1 (en) * | 1999-07-27 | 2005-08-09 | Valeo | Hydrokinetic coupling appliance, in particular for motor vehicle |
| DE10117746A1 (de) * | 2000-04-28 | 2001-11-22 | Luk Lamellen & Kupplungsbau | Drehmomentübertragungseinrichtung |
| WO2007140756A2 (de) * | 2006-06-07 | 2007-12-13 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehmomentübertragungseinrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112007002234A5 (de) | 2009-06-25 |
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