WO2009127183A1 - Einrichtung zur verstellung der exzentrizität für ein kurbel-cvt-getriebe - Google Patents
Einrichtung zur verstellung der exzentrizität für ein kurbel-cvt-getriebe Download PDFInfo
- Publication number
- WO2009127183A1 WO2009127183A1 PCT/DE2009/000381 DE2009000381W WO2009127183A1 WO 2009127183 A1 WO2009127183 A1 WO 2009127183A1 DE 2009000381 W DE2009000381 W DE 2009000381W WO 2009127183 A1 WO2009127183 A1 WO 2009127183A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crankshaft
- worm
- eccentric
- eccentricity
- adjusting
- 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
- F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
- F16H29/02—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts
- F16H29/04—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts in which the transmission ratio is changed by adjustment of a crank, an eccentric, a wobble-plate, or a cam, on one of the shafts
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/22—Cranks; Eccentrics
- F16C3/28—Adjustable cranks or eccentrics
Definitions
- the invention relates to a crank-CVT transmission, in particular an adjusting device for the drive shaft adjustment of the crank-CVT transmission for changing the eccentricity of Exzenterbau former on the drive shaft.
- a crank-CVT transmission is known for example from DE 102 43 533 A1.
- this transmission is provided on an input shaft driven by a motor, which forms a driving shaft with respect to the transmission, an adjustable Exzenterantriebs kann with Exzenterbau former which is connected via connecting rod-like connecting elements with a driven shaft, which forms an output shaft with respect to the transmission ,
- the driven shaft is driven by the transmission of the stroke of the connecting elements by means of freewheel devices on the shaft, which are provided between the connecting elements and this shaft.
- an electric machine is further provided, which is selectively connectable via coupling means only with the drive side of the transmission or only with the motor or at the same time with the output side and the motor.
- the output side of the transmission is formed by a driven shaft and the engine by an internal combustion engine.
- the driving shaft has a recess extending in the direction of the shaft axis, which receives an adjusting shaft.
- the adjusting shaft is rotatably mounted in the recess.
- the adjusting shaft has an external toothing whose teeth are in engagement with the teeth of the internal toothing of the eccentric components.
- the adjusting shaft is centered or mounted in the recess of the driving shaft via the sections of the external toothing forming the tip circle of the external toothing.
- the invention is based on the idea to replace existing in known crank-CVT transmissions drive shaft with Stirnradver ein by a drive shaft in which a worm drive with thread adjustment is used to change the eccentricity.
- This offers the possibility to use self-locking thread, so that, unlike the known arrangements, no permanent energization of the adjusting motor at constant travel, i. without translation change, must be provided.
- from the combination of threaded and worm drive result in a very high overall ratio, so that no extra transmission gear is needed for the adjustment, which brings both weight and space advantages.
- the crankshaft can be made very stiff due to the large possible cross-section, high drive torques can be transmitted.
- the device according to the invention for adjusting the eccentricity of the axis of rotation of an eccentric relative to the axis of rotation of the crankshaft of a crank CVT transmission includes a crankshaft with at least one guide portion for an eccentric, whose outer circumference adapted to accommodate a rolling bearing for receiving connecting elements, such as connecting rod-like connecting elements is, and a snail.
- the crankshaft has an axially extending cavity into which the worm is inserted and is rotatable but not displaceable in the axial direction.
- an adjusting unit for displacing the eccentric member in a direction perpendicular to the axial direction of the crankshaft, which is engaged with the worm, so that the adjustment is made by rotating the worm.
- the eccentric component is designed in two parts. The two parts are connected, for example by screwing during assembly on the crankshaft such that an Exzenterbauteilhow is formed. This allows easy installation.
- the at least one guide region is arranged eccentrically with respect to the crankshaft axis.
- a stroke can be provided even in a starting position, without the eccentric components being additionally displaced from this position by means of the adjusting unit. This can be achieved already in the initial state, a certain translation, so that the displacement of the Exzenterbaumaschine can be kept relatively small.
- the spread of the crank-CVT transmission can be increased if the displacement path of the eccentric components provided by the adjustment unit is chosen to be relatively large and at the same time the eccentric components are provided on eccentric guide portions.
- the adjusting unit includes a worm gear engaged with the worm, which is fixed but rotatably mounted in the adjustment direction in the adjustment and is connected to the Exzenterbauteil via a threaded device such that by changing the threaded engagement position between the worm wheel and the threaded device the Eccentric component is displaceable relative to the crankshaft.
- the threaded device is designed as a self-locking thread, which offers the possibility to provide an energization of the drive motor for the screw only when the ratio of the transmission is to be actually changed.
- the thread means may be considered to be positionally stable, i. not rotatable, be carried out in the eccentric mounted screw, in which case the mating thread is formed as an internal thread in the worm wheel.
- a plurality of guide areas and eccentric components are arranged with associated adjusting units, which are connected to a common - A -
- Worm can be moved so that a synchronous adjustment of all Exzenterbaumaschine is ensured.
- Figure 1 is a perspective view of a crank CVT transmission
- Figure 2A shows in perspective view the device for adjusting the eccentricity of the transmission of Figure 1, wherein the eccentricity is minimal;
- Figure 2B is a view corresponding to Figure 2A, but with the eccentricity maximum
- Figure 3A is a front elevational view of the eccentricity adjustment device with the eccentricity being minimal;
- Figure 3B is a view corresponding to Figure 3A, but with the eccentricity at a maximum;
- Figure 4 shows a cross section through the means for adjusting the eccentricity in a plane perpendicular to the axial direction of the crankshaft
- Figure 5A is a longitudinal cross-sectional view of the eccentricity adjustment device with the eccentricity being minimal;
- Figure 5B is a view corresponding to Figure 5A, with the eccentricity maximum
- Figure 6 is a perspective view of the drive shaft without a worm gear unit
- Figure 7 is a perspective view of the drive shaft with Schneckenradiser
- Figures 8A and 8B are perspective views of the drive shaft with screw drive;
- Figure 9 is a perspective view of the worm gear unit;
- Figure 10 is a section through the worm gear unit
- Figure 11 shows the worm wheel in perspective view
- Figure 12 is a perspective view of a screw with anti-rotation, which is used in the device for adjusting the eccentricity.
- the crank CVT transmission 1 shown in perspective view in FIG. 1, the housing of which is not shown, contains a driving crankshaft 4 and a driven shaft 5, which are aligned parallel to one another and in each case are rotatably mounted in the housing (not illustrated). Torque introduced, for example, into the crankshaft 4 by an internal combustion engine is transmitted to the driven shaft 5 by the crank CVT transmission and can be attacked there, for example, to drive wheels of a vehicle.
- the transmission 1 provides for a suitable translation.
- the driving crankshaft 4 and the driven shaft 5 are to drive by means of several on the crankshaft 4 in the axial direction of the crankshaft 4 successively arranged eccentric units 6, on which connecting rod-like connecting elements 8 are mounted on roller bearings, and a corresponding plurality of on the driven shaft 5 in the axial direction one behind the other arranged freewheel units 7, to which the connecting elements 8 are articulated.
- the connecting rod-like connecting element 8 is pivotally mounted on a hinge region 47, which is formed on an outer ring 45 of the freewheel unit 7.
- the freewheel unit 7 per se is formed by a polygonal profile 50 formed on the outer circumferential surface of the driven shaft 5, in association with clamping bodies 42 formed by rollers interposed between the polygonal profile 50 and the inner circumferential surface of the outer race 45.
- the clamping effect is achieved as a "roller freewheel” by a profiled inner race of the polygonal profile 50 in conjunction with rollers as clamping bodies 42.
- the clamping body 42 can block a rotation of these components relative to each other, so that the shaft 5 and the outer ring are rotated together only together. Either in the other direction of relative rotation no blocking effects generated by the clamping body 42, or There are provided so-called reversible freewheels, which in addition to a neutral position in which they allow a relative rotation of the shaft 5 and the outer ring 45, have two blocking positions in which the two components block in a first and second relative rotational direction and thus in the first and second Turning direction to be twisted together. Thereby, the rotational direction of the driven shaft 5 can be changed as an output shaft, so that, for example, a reverse gear can be realized.
- FIGS. 2A to 5B show a device 10 for adjusting the eccentricity of the axis of rotation of an eccentric component 12 provided on the crankshaft 4 relative to the axis of rotation of the crankshaft 4 in different views, namely in FIGS. 2A and 2B in a perspective view, wherein the eccentric components 12 different eccentricity in Figure 2A and Figure 2B, a front view of the crankshaft 4 in Figures 3A and 3B, in turn, the eccentric 12 have different eccentricity, a sectional view in Figure 4, wherein the section is a sectional plane perpendicular to the axial direction of the crankshaft. 4 and in longitudinal sectional views along the axial direction of the crankshaft 4 in Figs. 5A and 5B, again showing different eccentricities.
- the means 10 for adjusting the eccentricity comprises a plurality of axially arranged in succession on the crankshaft 4 eccentric units 6 with Exzenterbau tone 12, the eccentric units 6 are constructed substantially the same, so that only one will be described here.
- a storage on other suitable bearings instead of the ball bearings is also possible for the connecting elements 8.
- Each eccentric component 12 consists of two halves 13, 14, which result from a halving of the eccentric component 12 substantially along the diameter direction.
- the eccentric component halves 13, 14 are screwed and joined together by means of screws 15 provided in these recesses and threads (see FIG. 4).
- the eccentric 12 are mounted on respective guide portions 18 of the crankshaft 4 in a plane perpendicular to the crankshaft axis slidably. These guide areas 18 are arranged on the crankshaft 4 eccentric areas which are designed Kulissen Installationsartig.
- the crankshaft 4 with the corresponding guide regions 18 can best be seen from FIG. In the embodiment shown in FIG. 6, four guide regions 18 are provided, so that the associated eccentric components 12 can each be displaced on the associated guide region 18.
- crankshaft 4 Since four guide portions 18 are provided, these are mutually offset and rotated in the circumferential direction about the crankshaft axis by 90 °, so that the displacement direction of the Exzenterbaumaschine in mutually offset by 90 ° in the circumferential direction of the crankshaft axis directions, and their own eccentricity with respect to the axis the crankshaft 4 is also offset so that the provided by the individual eccentric 12 stroke during rotation of the crankshaft 4 by 360 ° uniformly, ie at equal angular intervals, is transmitted from the crankshaft 4 to the driven shaft 5 of the crank-CVT transmission.
- eccentric units 6 are to be arranged circumferentially offset with respect to their eccentricity, which is equal in size with respect to the direction of displacement, and with respect to their orientation offset.
- the guide regions 18 are shifted equally far out of the center with respect to the axis of the crankshaft 4, ie have the same dimensions of eccentricity, and are arranged rotated by 3607n relative to one another in the case of n-guide regions 18.
- adjustment units 20 for adjusting the eccentricity of the axis of rotation of the eccentric components 12 relative to the axis of rotation of the crankshaft 4 are provided in the guide regions 18 of the crankshaft 4.
- the adjustment unit 20 is shown in more detail in a perspective view in FIG. 9 and in a sectional view in FIG.
- the adjustment unit 20 includes a worm wheel 22, which is also shown in a perspective view in FIG.
- the worm wheel 22 has an internal thread 24, which extends in the adjustment of the eccentric 12 by the worm wheel and is designed as a self-locking thread 24.
- the thread 24 is brought into engagement with a screw 26, which is shown in FIG. 12, and which is secured against rotation in the adjustment direction in the respective eccentric component 12.
- the thread 24 and the screw 26 with its external thread together form a threaded device.
- this is designed at its two opposite ends with a polygonal profile, here a cuboid extension 27, which engages in a corresponding recess on the eccentric component and thus prevents rotation of the screw 26.
- the thread of the screw 26 is designed as an external thread and corresponds in terms of self-locking the internal thread 24 in the worm wheel 22nd
- radial bearings 28 and thrust bearings 29 are provided so that the worm wheel 22 about its axis corresponding to the threaded axis of the thread 24, rotatable, but not displaceable in the axial direction, is stored.
- the radial bearings 28 also prevent radial displacement, but allow the mentioned rotation.
- corresponding guide regions 30 for the radial bearings 28 and 31 for the axial bearings 29 are provided on the worm wheel 22.
- the guide portions 18 are each designed with a tapered recess, which allows the insertion of the worm wheel 22 from one side.
- the worm wheel 22 is fastened after insertion together with the bearings 28, 29 by means of a nut 32.
- a toothed area 34 is further provided, which lies on the outer peripheral surface of the worm wheel 22 and is adapted to engage a worm 40, not shown in FIG. 10, so that an adjusting rotational movement of the worm 40 as a rotational movement into the worm wheel 22 is initiated.
- FIGS. 8A and 8B show, in different perspective views, the crankshaft 4 with the guide regions 18 and the adjusting units 20 used, including the screw 26.
- the position and positioning of the worm 40 can also be seen from the longitudinal cross-section through the crankshaft 4 shown in FIGS. 5A and 5B.
- the screw 40 is inserted into a designed as an axial bore cavity 41, which extends in the longitudinal direction, ie axial direction, in the crankshaft 4 as a blind hole.
- the position of the worm 40 and the worm wheels 22 are selected such that the tooth regions 34 of the worm wheels 22 with the worm 40 can comb.
- the worm 40 itself is rotatably supported by needle bearings 43 inserted into the cavity 41 and is held by thrust bearing 44 in position with respect to the axial direction.
- the screw 40 is rotated by an electric motor or other drive means not shown in the figures.
- the worm 40 can not move due to axial fixing in the axial direction.
- the worm 40 is engaged with the worm wheels 22 of the adjusting units 20 housed in the guide portions 18 of the crankshaft 4. By the rotation of the worm 40, the worm wheels 22 are also rotated.
- the position of the adjusting unit 20 relative to the position of the eccentric component 12 is changed by means of the threaded engagement between the screw 26 which is fixed in the Exzenterbau former 12, and the adjustment unit 20 mounted in the crankshaft 4.
- the worm wheel 22 shifts along the axial direction of the screw 26 and thus in the adjustment direction of the eccentric units 12 with respect to the crankshaft 4.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Transmission Devices (AREA)
- Gear Transmission (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112009000818T DE112009000818A5 (de) | 2008-04-15 | 2009-03-19 | Einrichtung zur Verstellung der Exzentrizität für ein Kurbel-CVT-Getriebe |
| CN200980113386.4A CN102027267B (zh) | 2008-04-15 | 2009-03-19 | 用于调节用于曲柄-cvt变速器的偏心量的装置 |
| JP2011504308A JP5675585B2 (ja) | 2008-04-15 | 2009-03-19 | クランクcvt変速機のための偏心量を調整する装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12422008P | 2008-04-15 | 2008-04-15 | |
| US61/124,220 | 2008-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009127183A1 true WO2009127183A1 (de) | 2009-10-22 |
Family
ID=40774500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2009/000381 Ceased WO2009127183A1 (de) | 2008-04-15 | 2009-03-19 | Einrichtung zur verstellung der exzentrizität für ein kurbel-cvt-getriebe |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5675585B2 (de) |
| CN (1) | CN102027267B (de) |
| DE (2) | DE102009013996A1 (de) |
| WO (1) | WO2009127183A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150292605A1 (en) * | 2012-12-27 | 2015-10-15 | Honda Motor Co., Ltd. | Continuously variable transmission |
| US20170108032A1 (en) * | 2015-10-16 | 2017-04-20 | General Electric Company | Stepped shaft assembly |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011016991A1 (de) | 2010-04-29 | 2011-11-03 | Schaeffler Technologies Gmbh & Co. Kg | Verstelleinrichtung für die Übersetzungsverstellung eines stufenlos verstellbaren Getriebes, insbesondere eines Kurbel-CVT-Getriebes |
| US9121483B2 (en) | 2011-06-30 | 2015-09-01 | Honda Motor Co., Ltd. | Four-joint link type continuously variable transmission |
| JP6000152B2 (ja) * | 2013-02-05 | 2016-09-28 | 本田技研工業株式会社 | 車両用動力伝達装置 |
| JP6002605B2 (ja) * | 2013-03-07 | 2016-10-05 | 本田技研工業株式会社 | 無段変速機 |
| JP6132751B2 (ja) * | 2013-11-25 | 2017-05-24 | 本田技研工業株式会社 | 動力伝達装置 |
| WO2015104805A1 (ja) * | 2014-01-08 | 2015-07-16 | 本田技研工業株式会社 | 車両用動力伝達装置 |
| JP6463070B2 (ja) * | 2014-10-17 | 2019-01-30 | 津田駒工業株式会社 | クランク式駆動装置 |
| US20170227096A1 (en) * | 2016-02-10 | 2017-08-10 | Vincent Jean Bellis | Variable ratio crankshaft transmission |
| DE102016106070B4 (de) * | 2016-04-04 | 2025-02-13 | Stadler Anlagenbau Gmbh | Kurbelwelle für eine Sortiervorrichtung und Sortiervorrichtung |
| DE102023102906B4 (de) * | 2023-02-07 | 2024-08-14 | Schaeffler Technologies AG & Co. KG | Aktorikeinheit aufweisend Getriebeeinrichtung mit selbstregulierender Übersetzung |
| DE102024112195A1 (de) * | 2024-04-30 | 2025-10-30 | Stadler Anlagenbau Gmbh | Exzentrisch stehende Untergurtrolle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE687365A (de) * | 1966-09-26 | 1967-03-01 | ||
| DE1267504B (de) * | 1963-05-20 | 1968-05-02 | Sig Schweiz Industrieges | Getriebe mit stufenlos veraenderbarem UEbersetzungsverhaeltnis |
| DE10243533A1 (de) * | 2001-09-26 | 2003-04-10 | Luk Lamellen & Kupplungsbau | Antriebsanordnung |
| EP1650071A2 (de) * | 2004-10-22 | 2006-04-26 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Antriebsanordnung |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5089755A (de) * | 1973-12-18 | 1975-07-18 | ||
| JPS61153052A (ja) * | 1984-12-26 | 1986-07-11 | Shigeyoshi Karasawa | クランク機構式無段変速装置 |
| GB2215415B (en) * | 1988-03-02 | 1992-04-15 | Peter Goss | Variable speed transmission |
| CN2041379U (zh) * | 1988-05-23 | 1989-07-19 | 方映江 | 多相短摆臂式机械无级变速器 |
| CN1031590A (zh) * | 1988-06-04 | 1989-03-08 | 陈大勇 | 刚性非摩擦式无级变速器 |
| CN1019227B (zh) * | 1988-06-27 | 1992-11-25 | 约翰·H·布莱克墨里 | 无级变速机械传动装置 |
| GB8826112D0 (en) * | 1988-11-08 | 1988-12-14 | Egan M J | Variable ratio drive transmission |
| CN2282091Y (zh) * | 1997-01-10 | 1998-05-20 | 倪金良 | 一种齿轮啮合无级变速器 |
-
2009
- 2009-03-19 WO PCT/DE2009/000381 patent/WO2009127183A1/de not_active Ceased
- 2009-03-19 CN CN200980113386.4A patent/CN102027267B/zh not_active Expired - Fee Related
- 2009-03-19 JP JP2011504308A patent/JP5675585B2/ja not_active Expired - Fee Related
- 2009-03-19 DE DE200910013996 patent/DE102009013996A1/de not_active Withdrawn
- 2009-03-19 DE DE112009000818T patent/DE112009000818A5/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1267504B (de) * | 1963-05-20 | 1968-05-02 | Sig Schweiz Industrieges | Getriebe mit stufenlos veraenderbarem UEbersetzungsverhaeltnis |
| BE687365A (de) * | 1966-09-26 | 1967-03-01 | ||
| DE10243533A1 (de) * | 2001-09-26 | 2003-04-10 | Luk Lamellen & Kupplungsbau | Antriebsanordnung |
| EP1650071A2 (de) * | 2004-10-22 | 2006-04-26 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Antriebsanordnung |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150292605A1 (en) * | 2012-12-27 | 2015-10-15 | Honda Motor Co., Ltd. | Continuously variable transmission |
| US9441716B2 (en) * | 2012-12-27 | 2016-09-13 | Honda Motor Co., Ltd. | Stepless transmission |
| US20170108032A1 (en) * | 2015-10-16 | 2017-04-20 | General Electric Company | Stepped shaft assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009013996A1 (de) | 2009-10-22 |
| CN102027267B (zh) | 2014-07-09 |
| DE112009000818A5 (de) | 2011-01-05 |
| JP5675585B2 (ja) | 2015-02-25 |
| CN102027267A (zh) | 2011-04-20 |
| JP2011518290A (ja) | 2011-06-23 |
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