WO2011113411A1 - Belt-driven conical pulley transmission - Google Patents
Belt-driven conical pulley transmission Download PDFInfo
- Publication number
- WO2011113411A1 WO2011113411A1 PCT/DE2011/000195 DE2011000195W WO2011113411A1 WO 2011113411 A1 WO2011113411 A1 WO 2011113411A1 DE 2011000195 W DE2011000195 W DE 2011000195W WO 2011113411 A1 WO2011113411 A1 WO 2011113411A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conical
- starting clutch
- transmission according
- torque sensor
- pulley
- Prior art date
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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
- F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
- F16H61/66272—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members characterised by means for controlling the torque transmitting capability of the gearing
Definitions
- the invention relates to a conical-pulley transmission with a first conical disk set, to which a torque sensor is assigned, and to a starting clutch.
- German Offenlegungsschrift DE 198 57 708 A1 discloses a conical-pulley transmission with a starting clutch, which is designed as a hydrodynamic torque converter and connected via two spur gears to a transmission shaft of the first conical disk set.
- German Offenlegungsschrift DE 10 2005 027 614 A1 discloses a conical-pulley belt transmission having a torque sensor and a starting clutch designed as a multi-plate clutch, which comprises a clutch basket with a cylinder region in which the outer disks of the starting clutch are suspended.
- a sensing member of the torque sensor is, indirectly via an axial toothing, rotatably connected to the peripheral surface of the cylinder portion, but axially slidably connected.
- Axial means in the direction or parallel to the axis of rotation of one of the disc sets.
- the object of the invention is to provide a conical-pulley transmission according to the preamble of claim 1, which is simple in construction and inexpensive to produce.
- the conical-pulley transmission according to the invention should require less installation space in the axial direction than conventional conical-pulley belt transmissions.
- the object is achieved in a conical-pulley transmission with a first set of conical disks, to which a torque sensor is assigned, and with a starting clutch, achieved in that the starting clutch is connected directly to the torque sensor.
- the starting clutch is preferably designed as a wet-running multi-plate clutch and can be pre-assembled as a particularly space-saving component.
- a preferred embodiment of the cone pulley belt transmission is characterized in that an output part of the starting clutch and an input part of the torque sensor are combined in a single sheet metal part.
- the sheet metal part has the function of a ramp plate or sensor plate of the torque sensor on the one hand.
- the sheet metal part exercises, for example, the function of an inner disk carrier of the run as a wet-running multi-plate clutch starting clutch.
- a further preferred embodiment of the cone pulley belt transmission is characterized in that the starting clutch is arranged radially outside the torque sensor. This provides the advantage that no additional axial space is required for the starting clutch.
- a further preferred embodiment of the cone pulley belt transmission is characterized in that the starting clutch is arranged in the same axial section as the torque sensor. This provides the advantage that no additional axial space is needed.
- a further preferred exemplary embodiment of the conical-pulley belt transmission is characterized in that the starting clutch is designed as a multi-plate clutch with an inner-plate carrier which constitutes a ramp plate or sensor plate of the torque sensor. This provides in addition to the space savings the advantage that at least one part, in particular sheet metal part is saved.
- the inner disc carrier carries inner fins which cooperate with outer fins suspended in an outer disc carrier fixed to a driven shaft.
- the outer disk carrier is preferably designed as a sheet metal part and, for example, materially bonded, in particular by welding, firmly connected to the driven shaft.
- at least one coupling element is preferably attached to the outer disk carrier in order, for example, to drive an oil pump associated with the belt pulley.
- Kegeiinsertionnumschlingungsgetriebes is characterized in that the driven shaft, at least partially, is designed as a hollow shaft and having at least one fluid passage hole which opens into an actuating pressure chamber which is bounded by an actuating piston of the starting clutch.
- the actuating piston is preferably movable back and forth in the axial direction in the actuating pressure chamber to frictionally connect the outer disk of the starting clutch with the inner disk, so that a torque can be transmitted.
- the fluid is preferably a hydraulic medium, such as hydraulic oil, which is conveyed as required by the previously mentioned pump in the actuating pressure chamber.
- a further preferred embodiment of the cone pulley belt transmission is characterized in that the actuating piston is biased by a spring supported on the torque sensor against the outer disk carrier.
- the spring is preferably designed as a plate spring. By the biasing force of the spring, the starting clutch is preferably biased in its open position in which no torque is transmitted.
- a further preferred embodiment of the conical-pulley belt transmission is characterized in that a portion of a transmission shaft associated with the first set of conical pulleys is rotatably arranged in the hollow shaft. As a result, further axial space can be saved. In the radial direction, an annular gap is preferably formed between the gear shaft and the hollow shaft, through which the fluid required for actuating the starting clutch is supplied.
- a radial bearing for example a needle bearing, can be arranged between the two shafts.
- a further preferred embodiment of the cone pulley belt transmission is characterized in that the inner disk carrier is supported via a thrust bearing on the transmission shaft associated with the first set of cone pulleys.
- the thrust bearing is supported, for example, on an axial stop ring, which is partially disposed in an annular groove of the transmission shaft.
- the single accompanying figure shows a section of a bevel gear according to the invention in longitudinal section.
- a conical pulley 1 is shown in fragmentary longitudinal section.
- the conical-pulley transmission 1 comprises two conical pulley sets (not shown) which are connected to each other by a belt-like means, such as a chain, for transmitting torque.
- Such pulley-belt transmissions are also referred to as CVT transmission (Continuously Variable Transmission).
- Each set of conical disks comprises an axially fixed conical disk and an axially displaceable conical disk, which is also referred to as a spacer disk.
- the conical-pulley belt transmission 1 comprises a starting clutch 5 and a torque sensor 8.
- the torque sensor 8 is arranged on a transmission shaft 11, which is assigned to the first set of conical pulleys of the conical-pulley belt transmission 1.
- One end of the gear shaft 11 is arranged in a, at least partially, designed as a hollow shaft driven shaft 12.
- the input part 14 of the starting clutch 5 is welded.
- the input part 14 is designed as a sheet metal part, which extends from the driven shaft 12 in steps and slopes radially outward and merges into a hollow cylindrical portion 18.
- outer plates 21, 22 are mounted in the hollow cylindrical portion 18 of the input part 14 .
- the input part 14 of the starting clutch 5 is an outer disk carrier 16, with which the outer disks 21, 22 rotatably, but in the axial direction are limited displaceable connected.
- an axial stop 24 is fixed.
- the outer disks 21, 22 cooperate to form a wet-running multi-plate clutch with inner disks 25, 26, the non-rotatably, but limited veriagerbar limited in the axial direction, are connected to an inner disk carrier 28.
- the inner disk carrier 28 includes within the hollow cylindrical portion 18 a further hollow cylindrical portion 29, in which the inner disks 25, 26 are mounted.
- the inner disk carrier 28 is designed as a sheet metal part 30 which is integrally connected to the hollow cylindrical portion 29. From the hollow cylindrical portion 29, the sheet metal part 30 extends with bevels and curves radially inwardly. According to an essential aspect of the invention, the sheet metal part 30 simultaneously constitutes the input part of the torque sensor 8 and is provided for this purpose with ramp elements or spreading elements which cooperate with the interposition of balls 31 with further ramp elements and spreading elements, which are provided on a sensor plate 32 of the torque sensor 8 are.
- a torque introduced into the sheet metal part 30 is introduced via the torque sensor 8 in the transmission shaft 11.
- the sheet metal part 30 acts on the balls 31 so with the sensor plate 32 of the torque sensor 8 together that torque shocks an axial Displacement of a feeler piston 33 effect, whereby the contact pressure is increased to the associated travel disc.
- a pressure acting in a pressure cylinder pressure can be adjusted in proportion to the applied torque.
- the starting clutch 5 is actuated via an actuating piston 40, which is guided in the axial direction to and fro movable on a torque sensor 8 facing the end of the driven shaft 12.
- the actuating piston 40 extends in steps and curves substantially radially outward to the disk set of the starting clutch 5. In a stepped portion of the actuating piston 40 with the interposition of at least one seal 42 on the outer disk carrier 16 to limit an actuating pressure chamber 44.
- a fluid passage hole 45 which extends substantially transversely through the driven shaft 12.
- the fluid passage hole 45 connects the actuating pressure space 44 with an annular gap 48 which is formed in the radial direction between the transmission shaft 11 and the driven shaft 12.
- a radial bearing 50 is arranged, which is designed for example as a needle bearing.
- the annular gap 48 serves to guide an actuating fluid, in particular hydraulic medium, via the fluid through-hole 45, as required, into the actuating pressure chamber 44.
- the actuating fluid is provided by a pump, in particular a hydraulic pump, which is driven by a coupling element 34 fixed externally to the outer plate carrier 16.
- the actuating piston 40 is biased by a preferably designed as a plate spring spring 52 in the axial direction against the outer disk carrier 16.
- the spring 52 is supported on the sheet metal part 30, which constitutes the inner disk carrier 28.
- the sheet metal part 30 is radially inwardly supported in the axial direction on a thrust bearing 54, which in turn is supported on a stop ring 55 which is partially disposed in an annular groove of the transmission shaft 11.
- a thrust bearing 54 By the axial bearing 54 is an axial movement of the sheet metal part 30 in Figure 1 to the left, that is to the driven shaft 12, prevented.
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 |
---|---|---|---|
DE112011100936T DE112011100936A5 (en) | 2010-03-18 | 2011-02-28 | cone pulley |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010011811 | 2010-03-18 | ||
DE102010011811.7 | 2010-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011113411A1 true WO2011113411A1 (en) | 2011-09-22 |
Family
ID=44041453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2011/000195 WO2011113411A1 (en) | 2010-03-18 | 2011-02-28 | Belt-driven conical pulley transmission |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE112011100936A5 (en) |
WO (1) | WO2011113411A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0338219A2 (en) * | 1988-04-22 | 1989-10-25 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Transmission unit for motor vehicles |
WO1990006457A1 (en) * | 1988-12-05 | 1990-06-14 | Ford Motor Company Limited | A control system for the supply of pressure medium to an automatic transmission |
DE19857708A1 (en) | 1997-12-22 | 1999-06-24 | Luk Getriebe Systeme Gmbh | Gearbox with pressure medium operation |
US6017286A (en) * | 1994-12-15 | 2000-01-25 | Luk Getriebe-Systems Gmbh | Power train |
DE102005027614A1 (en) | 2004-06-25 | 2006-01-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Disk arrangement with start up clutch and torque sensor, also serving as reversing device |
-
2011
- 2011-02-28 DE DE112011100936T patent/DE112011100936A5/en not_active Withdrawn
- 2011-02-28 DE DE201110012602 patent/DE102011012602A1/en not_active Withdrawn
- 2011-02-28 WO PCT/DE2011/000195 patent/WO2011113411A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0338219A2 (en) * | 1988-04-22 | 1989-10-25 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Transmission unit for motor vehicles |
WO1990006457A1 (en) * | 1988-12-05 | 1990-06-14 | Ford Motor Company Limited | A control system for the supply of pressure medium to an automatic transmission |
US6017286A (en) * | 1994-12-15 | 2000-01-25 | Luk Getriebe-Systems Gmbh | Power train |
DE19857708A1 (en) | 1997-12-22 | 1999-06-24 | Luk Getriebe Systeme Gmbh | Gearbox with pressure medium operation |
DE102005027614A1 (en) | 2004-06-25 | 2006-01-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Disk arrangement with start up clutch and torque sensor, also serving as reversing device |
Also Published As
Publication number | Publication date |
---|---|
DE112011100936A5 (en) | 2013-01-24 |
DE102011012602A1 (en) | 2011-09-22 |
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