WO2010095515A1 - Stator and torque converter - Google Patents
Stator and torque converter Download PDFInfo
- Publication number
- WO2010095515A1 WO2010095515A1 PCT/JP2010/051566 JP2010051566W WO2010095515A1 WO 2010095515 A1 WO2010095515 A1 WO 2010095515A1 JP 2010051566 W JP2010051566 W JP 2010051566W WO 2010095515 A1 WO2010095515 A1 WO 2010095515A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator
- torque converter
- impeller
- turbine
- shell
- Prior art date
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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
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
- F16H41/26—Shape of runner blades or channels with respect to function
-
- 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
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
-
- 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
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
- F16H41/28—Details with respect to manufacture, e.g. blade attachment
- F16H2041/285—Details with respect to manufacture, e.g. blade attachment of stator blades
Definitions
- the present invention relates to a stator, and more particularly to a stator for rectifying the flow of hydraulic fluid from a torque converter turbine to the impeller.
- the present invention also relates to a torque converter, and more particularly to a torque converter for transmitting torque from an engine to the transmission side by fluid.
- the torque converter includes a front cover, an impeller, a turbine, and a stator. Torque from the engine is transmitted to the front cover, and then the torque transmitted to the front cover is transmitted to the impeller. When power is transmitted to the impeller, the impeller rotates to move the hydraulic oil to the turbine side, and the hydraulic oil moved to the turbine side rotates the turbine. At this time, torque is transmitted from the turbine to the transmission side shaft, and the transmission side shaft is rotated. Then, the hydraulic oil on the turbine side is returned to the impeller side via the stator.
- the stator is a mechanism for straightening the flow of hydraulic oil from the turbine to the impeller, and is disposed between the inner periphery of the impeller and the inner periphery of the turbine.
- the stator mainly includes an annular stator shell, a plurality of stator blades provided on the outer peripheral surface of the shell, and an annular stator core fixed to the tips of the plurality of stator blades.
- the stator shell is supported by a fixed shaft via a one-way clutch (Patent Document 1).
- An object of the present invention is to suppress generation of vortices at a portion where hydraulic oil separates from a stator, and to allow the hydraulic oil to efficiently flow from a turbine to an impeller so as to increase a capacity coefficient. .
- the stator of the torque converter according to claim 1 rectifies the flow of hydraulic fluid returning from the turbine of the torque converter to the impeller, and is disposed so as to radially extend from the annular shell and the annular shell on the hydraulic oil outlet side And an annular core disposed on an outer peripheral side of the blade.
- the stator of the torque converter according to claim 2 is the stator according to claim 1, wherein each of the plurality of blades has a blade width with respect to a straight line connecting the shell side end and the core side end at an end edge on the hydraulic oil outlet side. A plurality of recesses recessed in the direction are formed. Also in this case, the same function and effect as in claim 1 can be obtained.
- the stator of the torque converter according to claim 3 is the stator according to claim 1, wherein each of the plurality of blades has a blade width with respect to a straight line connecting the shell side end and the core side end at an end edge on the hydraulic oil outlet side. A plurality of projections projecting in the direction are formed. Also in this case, the same function and effect as in claim 1 can be obtained.
- the stator of the torque converter according to claim 4 is the stator according to any one of claims 1 to 3, wherein the wave shape of the plurality of blades has a ratio of the total height h of the unevenness to the full width H in the radial direction of 3% to 20%. It is below.
- the torque converter according to claim 5 is a torque converter for transmitting torque from the engine to the transmission side by fluid, and the impeller to which the torque from the engine is input is disposed opposite to the impeller and the torque is transmitted to the transmission. And a stator according to any one of claims 1 to 4 disposed on the inner peripheral side between the impeller and the turbine.
- the generation of a particularly large eddy is suppressed at the portion where the hydraulic oil separates from the stator, and the capacity coefficient can be increased.
- FIG. 7 shows a stator blade according to another embodiment of the present invention.
- FIG. 1 is a schematic longitudinal sectional view of a torque converter 1 in which one embodiment of the present invention is adopted.
- the torque converter 1 is a device for transmitting torque from an engine crankshaft (not shown) to an input shaft (not shown) of a transmission.
- An engine (not shown) is disposed on the left side of FIG. 1, and a transmission (not shown) is disposed on the right side of FIG.
- the OO line shown in FIG. 1 is the rotation axis of the torque converter 1.
- the torque converter 1 is composed of a torus 5 composed of three types of impellers (impeller 2, turbine 3, stator 4) and a lockup device 6.
- the front cover 10 is a disk-like member, and is disposed close to the tip of the crankshaft of the engine.
- a center boss 11 is fixed to the inner peripheral portion of the front cover 10 by welding.
- a plurality of nuts 12 are fixed at equal intervals in the circumferential direction.
- An outer peripheral cylindrical portion 13 extending toward the transmission in the axial direction is formed on an outer peripheral portion of the front cover 10.
- the outer peripheral edge of the impeller shell 15 of the impeller 2 is fixed to the end of the outer peripheral cylindrical portion 13 by welding.
- the front cover 10 and the impeller 2 form a fluid chamber in which the working oil (fluid) is filled.
- the impeller 2 mainly includes an impeller shell 15, a plurality of impeller blades 16 fixed to the inside of the impeller shell 15, and an impeller hub 17 fixed to the inner circumferential portion of the impeller shell 15.
- An annular impeller core 18 is fixed to the inside of the plurality of impeller blades 16.
- the central portion of the circle of impeller blade 16 is semi-circular, and impeller core 18 has a cross-sectional shape along it.
- the turbine 3 is axially opposed to the impeller 2 in the fluid chamber.
- the turbine 3 includes a turbine shell 20, a turbine blade 21, a turbine core 22, and a turbine hub 23.
- the turbine shell 20 is an annular member, and the inner peripheral side thereof is fixed to the turbine hub 23 by welding.
- the turbine blades 21 are members fixed to the inside of the turbine shell 21 and arranged in plural in the circumferential direction.
- the turbine core 22 is a portion provided at the tip of the turbine blade 21.
- the turbine hub 23 is a portion attached to a transmission-side shaft so as not to be relatively rotatable, and includes a cylindrical portion 23 a and a disk-shaped flange 23 b.
- the cylindrical portion 23a is disposed on the outer peripheral side of the transmission-side shaft, and the flange 23b protrudes from substantially the center of the cylindrical portion 23a in the axial direction toward the outer peripheral side.
- the stator 4 is a mechanism for rectifying the flow of the hydraulic oil from the turbine 3 back to the impeller 2.
- the stator 4 is an integral member formed by casting of resin, aluminum alloy or the like.
- the stator 4 is disposed between the inner periphery of the impeller 2 and the inner periphery of the turbine 3.
- the stator 4 mainly includes an annular stator shell 25, a plurality of stator blades 26 provided on the outer peripheral surface of the stator shell 25, and an annular stator core 27 fixed to the tips of the plurality of stator blades 26. ing.
- the stator shell 25 is supported by a fixed shaft (not shown) via a one-way clutch 30. Further, a retainer 31 is disposed on the axial direction engine side of the one-way clutch 30.
- the retainer 31 is disposed between the one-way clutch 30 and the flange 23 b of the turbine hub 23 and holds the one-way clutch 30. Further, a plurality of grooves extending in the radial direction are formed in the contact surface of the retainer 31 with the flange 23b, and hydraulic fluid can flow from the inner peripheral side to the outer peripheral side.
- a thrust bearing 32 is disposed between the impeller hub 17 and the stator shell 25.
- a seal member 33 is disposed between the inner ring of the one-way clutch 30 and the outer peripheral portion of the cylindrical portion 23 a of the turbine hub 23.
- the stator blade 26 is a plate-like portion having a predetermined width connecting the stator shell 25 and the stator core 27 as partially enlarged in FIG. 2.
- the stator blade 26 has an inlet-side edge and an outlet-side edge, and the inlet-side edge is formed to connect the shell side end S1 and the core side end C1 in a straight line. There is.
- the shell side end S2 and the core side end C2 are not connected by the straight line M, and three concave portions 26a which are recessed inward (entrance side) in the width direction with respect to the straight line M Is formed.
- the recess 26 a is formed to be recessed in an arc shape.
- two convex portions 26b are formed to be tapered in the flow direction of the hydraulic fluid.
- the edge on the outlet side is formed in a wave shape having unevenness in the blade width direction.
- the uneven portions 26a and 26b are not formed to an extent due to manufacturing errors, but are positively formed uneven.
- the length (height of the protrusion 26b) h of the recess 26a is 3% or more and 20% or less preferable.
- the lockup device 6 mainly includes a piston 40 and a damper mechanism 41.
- the piston 40 is a disk-shaped member disposed between the front cover 10 and the turbine 3.
- An inner peripheral cylindrical portion 42 extending toward the transmission in the axial direction is formed on the inner peripheral portion of the piston 40.
- the inner circumferential tubular portion 42 is supported on the outer circumferential surface of the turbine hub 23 so as to be capable of relative rotation and axial movement.
- the axial transmission end of the inner cylindrical portion 42 abuts on the flange 23 b of the turbine hub 23 so that the movement toward the axial transmission is limited to a predetermined position.
- a seal ring 43 is disposed on the outer peripheral surface of the turbine hub 23, and the seal ring 43 seals axial spaces at the inner peripheral portion of the piston 40.
- the outer peripheral portion of the piston 40 functions as a clutch connecting portion. That is, an annular friction facing 45 is fixed to the engine side of the outer peripheral portion of the piston 40. The friction facing 45 is opposed to an annular and flat friction surface formed on the inner surface of the outer periphery of the front cover 10.
- the damper mechanism 41 includes a retaining plate 46, a driven plate 47, and a plurality of torsion springs 48.
- the retaining plate 46 is fixed to the turbine 3 side of the outer peripheral portion of the piston 40 by a plurality of rivets 49.
- the retaining plate 46 has a cut-and-raised portion for storing and supporting the torsion spring 48.
- the plurality of torsion springs 48 are coil springs extending in the circumferential direction, and are accommodated in the retaining plate 46 and supported at both circumferential ends.
- the driven plate 47 is an annular plate fixed to the outer peripheral side of the turbine shell 20 of the turbine 3.
- the driven plate 47 has protruding claws 47 a which extend toward the front cover 10 and engage with both circumferential ends of the torsion spring 48.
- Torque is transmitted from a crankshaft of an engine (not shown) to the front cover 10 and the impeller 2.
- the hydraulic oil driven by the impeller blade 16 of the impeller 2 rotates the turbine 3.
- the rotation of the turbine 3 is output to an input shaft (not shown) on the transmission side via a turbine hub 23.
- the hydraulic oil flowing from the turbine 3 to the impeller 2 flows toward the impeller 2 through a passage defined by the stator shell 25 of the stator 4 and the stator core 27.
- the flow of the hydraulic oil passing through the stator 4 is restricted by the stator blade 26 and is separated from the stator blade 26 at the end edge of the stator blade 26 on the outlet side.
- the flow velocity of the hydraulic oil flowing from the edge on the outlet side to the impeller 2 is not uniform, and the wave shape It changes according to the unevenness of. For this reason, large vortices generated in the conventional stator blade are less likely to be generated, relatively small vortices are irregularly generated, and as a result, these vortices cancel each other.
- FIG. 4 shows a comparison of the characteristics of a conventional torque converter using a stator blade and a torque converter using the stator blade 26 of the present embodiment.
- the characteristic indicated by the solid line is the characteristic of the present embodiment
- the characteristic indicated by the broken line is the characteristic of the conventional torque converter.
- the capacity coefficient of this embodiment is characteristic Cc1
- the torque ratio is characteristic T1
- the torque transfer efficiency is characteristic ⁇ 1
- the conventional capacity coefficient is characteristic Cc2
- the torque ratio is characteristic T2
- the torque transfer efficiency is characteristic It is ⁇ 2.
- FIG. 5 shows another embodiment of the stator blade.
- the stator blade 26 ' has a plurality of convex portions 26b' projecting outward in the width direction with respect to a straight line M connecting the shell side end S2 and the core side end C2 at the edge on the outlet side.
- the convex portion 26b ' is formed to be tapered toward the flow direction of the hydraulic oil, and a concave portion 26a' is formed between the convex portions 26b 'to form a wave shape as a whole.
- the generation of a particularly large eddy is suppressed at the portion where the hydraulic oil separates from the stator, and the capacity coefficient can be increased.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
図1は本発明の一実施形態が採用されたトルクコンバータ1の縦断面概略図である。トルクコンバータ1は、エンジンのクランクシャフト(図示せず)からトランスミッションの入力シャフト(図示せず)にトルクの伝達を行うための装置である。図1の左側に図示しないエンジンが配置され、図1の右側に図示しないトランスミッションが配置されている。図1に示すO-O線がトルクコンバータ1の回転軸である。 [Basic structure of torque converter]
FIG. 1 is a schematic longitudinal sectional view of a torque converter 1 in which one embodiment of the present invention is adopted. The torque converter 1 is a device for transmitting torque from an engine crankshaft (not shown) to an input shaft (not shown) of a transmission. An engine (not shown) is disposed on the left side of FIG. 1, and a transmission (not shown) is disposed on the right side of FIG. The OO line shown in FIG. 1 is the rotation axis of the torque converter 1.
次にステータブレード26について、図2~図4を用いて詳細に説明する。ステータブレード26は、図2で一部を拡大して示すように、ステータシェル25とステータコア27とを結ぶ所定の幅を有するプレート状の部分である。ステータブレード26は入り口側の端縁と出口側の端縁とを有しており、入り口側の端縁は、シェル側端部S1とコア側端部C1とを直線で結ぶように形成されている。一方、出口側の端縁は、シェル側端部S2とコア側端部C2とが直線Mでは結ばれておらず、直線Mに対して幅方向において内側(入り口側)に凹む3つの凹部26aが形成されている。この凹部26aは、円弧状に凹むように形成されている。換言すれば、ステータブレード26の出口側の端縁には、作動油の流れる方向に向かって先細に形成された2つの凸部26bが形成されている。このように、出口側の端縁はブレード幅方向において凹凸を有する波形状に形成されている。 [Stator blade]
Next, the
次に、ロックアップ装置6について説明する。ロックアップ装置6は、主に、ピストン40とダンパー機構41とから構成されている。 [Lockup device]
Next, the
図示しないエンジンのクランクシャフトからフロントカバー10及びインペラー2にトルクが伝達される。インペラー2のインペラーブレード16により駆動された作動油は、タービン3を回転させる。このタービン3の回転はタービンハブ23を介して図示しないトランスミッション側の入力シャフトに出力される。タービン3からインペラー2へと流れる作動油は、ステータ4のステータシェル25とステータコア27により決められた通路を通ってインペラー2側へと流れる。 [Operation]
Torque is transmitted from a crankshaft of an engine (not shown) to the
本発明はかかる上記実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変形又は修正が可能である。 [Other embodiments]
The present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the scope of the present invention.
2 インペラー
3 タービン
4 ステータ
25 ステータシェル
26 ステータブレード
26a 凹部
26b 凸部
27 スタータコア Reference Signs List 1
Claims (8)
- トルクコンバータのタービンからインペラーに戻る作動油の流れを整流するためのステータであって、
環状のシェルと、
前記環状のシェルから放射状に延びるように配置され、作動油出口側の端縁が波形状に形成された複数のブレードと、
前記ブレードの外周側に配置された環状のコアと、
を備えたトルクコンバータのステータ。 A stator for rectifying the flow of hydraulic fluid returning from a torque converter turbine to an impeller, comprising:
With an annular shell,
A plurality of blades arranged to extend radially from the annular shell, the edge on the hydraulic oil outlet side being formed in a wave shape;
An annular core disposed on an outer peripheral side of the blade;
Torque converter stator with. - 前記複数のブレードのそれぞれは、作動油出口側の端縁において、シェル側端とコア側端とを結ぶ直線に対してブレード幅方向に凹む複数の凹部が形成されている、請求項1に記載のトルクコンバータのステータ。 Each of the plurality of blades has a plurality of recesses formed in the blade width direction with respect to a straight line connecting the shell side end and the core side end at an end edge on the hydraulic oil outlet side. Torque converter stator.
- 前記複数のブレードのそれぞれは、作動油出口側の端縁において、シェル側端とコア側端とを結ぶ直線に対してブレード幅方向に突出する複数の凸部が形成されている、請求項1に記載のトルクコンバータのステータ。 Each of the plurality of blades is formed with a plurality of protrusions projecting in the blade width direction with respect to a straight line connecting the shell side end and the core side end at an end edge on the hydraulic oil outlet side. Stator of the torque converter according to.
- 前記複数のブレードの波形状は、径方向の全幅Hに対する凹凸の全高さhの比が3%以上20%以下である、請求項1に記載のトルクコンバータのステータ。 The stator of a torque converter according to claim 1, wherein a ratio of a total height h of the unevenness to a full width H in the radial direction is 3% or more and 20% or less.
- エンジンからのトルクを流体によってトランスミッション側に伝達するためのトルクコンバータであって、
前記エンジンからのトルクが入力されるインペラーと、
前記インペラーに対向して配置され、前記トランスミッションにトルクを出力可能なタービンと、
前記インペラーと前記タービンとの間の内周側に配置されたステータと、
を備え、
前記ステータは、
環状のシェルと、
前記環状のシェルから放射状に延びるように配置され、作動油出口側の端縁が波形状に形成された複数のブレードと、
前記ブレードの外周側に配置された環状のコアと、
を有している、
トルクコンバータ。 A torque converter for transmitting torque from an engine to a transmission through a fluid,
An impeller to which torque from the engine is input;
A turbine disposed opposite to the impeller and capable of outputting torque to the transmission;
A stator disposed on an inner circumferential side between the impeller and the turbine;
Equipped with
The stator is
With an annular shell,
A plurality of blades arranged to extend radially from the annular shell, the edge on the hydraulic oil outlet side being formed in a wave shape;
An annular core disposed on an outer peripheral side of the blade;
have,
Torque converter. - 前記複数のブレードのそれぞれは、作動油出口側の端縁において、シェル側端とコア側端とを結ぶ直線に対してブレード幅方向に凹む複数の凹部が形成されている、請求項5に記載のトルクコンバータ。 The plurality of recesses according to claim 5, wherein each of the plurality of blades has a plurality of recessed portions recessed in the blade width direction with respect to a straight line connecting the shell side end and the core side end at an end edge on the hydraulic oil outlet side. Torque converter.
- 前記複数のブレードのそれぞれは、作動油出口側の端縁において、シェル側端とコア側端とを結ぶ直線に対してブレード幅方向に突出する複数の凸部が形成されている、請求項5に記載のトルクコンバータ。 Each of the plurality of blades is formed with a plurality of projections projecting in the blade width direction with respect to a straight line connecting the shell side end and the core side end at an end edge on the hydraulic oil outlet side. Torque converter as described in.
- 前記複数のブレードの波形状は、径方向の全幅Hに対する凹凸の全高さhの比が3%以上20%以下である、請求項5に記載のトルクコンバータ。
The torque converter according to claim 5, wherein a ratio of a total height h of the unevenness to a full width H in the radial direction is 3% or more and 20% or less.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800080434A CN102317651A (en) | 2009-02-17 | 2010-02-04 | Stator and torque converter |
DE112010000842T DE112010000842T5 (en) | 2009-02-17 | 2010-02-04 | Stator and torque converter |
US13/201,526 US20110311367A1 (en) | 2009-02-17 | 2010-02-04 | Stator and torque converter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009033618A JP4620785B2 (en) | 2009-02-17 | 2009-02-17 | Stator and torque converter |
JP2009-033618 | 2009-02-17 |
Publications (1)
Publication Number | Publication Date |
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WO2010095515A1 true WO2010095515A1 (en) | 2010-08-26 |
Family
ID=42633799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/051566 WO2010095515A1 (en) | 2009-02-17 | 2010-02-04 | Stator and torque converter |
Country Status (5)
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JP (1) | JP4620785B2 (en) |
KR (1) | KR20110112423A (en) |
CN (1) | CN102317651A (en) |
DE (1) | DE112010000842T5 (en) |
WO (1) | WO2010095515A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6476875B2 (en) | 2015-01-13 | 2019-03-06 | アイシン精機株式会社 | Torque converter stator wheel and torque converter |
KR101862673B1 (en) * | 2017-05-22 | 2018-05-31 | 김종길 | Toque converter |
KR102094239B1 (en) * | 2018-11-20 | 2020-03-27 | 삼영엠티 주식회사 | Torque converter with enhanced fluid acceleration efficiency |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0783309A (en) * | 1993-09-16 | 1995-03-28 | Nissan Motor Co Ltd | Torque converter |
JPH1122805A (en) * | 1997-07-07 | 1999-01-26 | Jatco Corp | Stator structure |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3745942B2 (en) | 2000-06-14 | 2006-02-15 | 株式会社エクセディ | Stator |
-
2009
- 2009-02-17 JP JP2009033618A patent/JP4620785B2/en not_active Expired - Fee Related
-
2010
- 2010-02-04 DE DE112010000842T patent/DE112010000842T5/en not_active Withdrawn
- 2010-02-04 CN CN2010800080434A patent/CN102317651A/en active Pending
- 2010-02-04 WO PCT/JP2010/051566 patent/WO2010095515A1/en active Application Filing
- 2010-02-04 KR KR1020117018488A patent/KR20110112423A/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0783309A (en) * | 1993-09-16 | 1995-03-28 | Nissan Motor Co Ltd | Torque converter |
JPH1122805A (en) * | 1997-07-07 | 1999-01-26 | Jatco Corp | Stator structure |
Also Published As
Publication number | Publication date |
---|---|
JP2010190273A (en) | 2010-09-02 |
CN102317651A (en) | 2012-01-11 |
KR20110112423A (en) | 2011-10-12 |
JP4620785B2 (en) | 2011-01-26 |
DE112010000842T5 (en) | 2012-09-20 |
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