WO2011024640A1 - トルクコンバータ用ロックアップ装置 - Google Patents
トルクコンバータ用ロックアップ装置 Download PDFInfo
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- WO2011024640A1 WO2011024640A1 PCT/JP2010/063528 JP2010063528W WO2011024640A1 WO 2011024640 A1 WO2011024640 A1 WO 2011024640A1 JP 2010063528 W JP2010063528 W JP 2010063528W WO 2011024640 A1 WO2011024640 A1 WO 2011024640A1
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- WIPO (PCT)
- Prior art keywords
- outer peripheral
- peripheral side
- inner peripheral
- torsion spring
- piston
- Prior art date
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- 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
- F16F15/131—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 the rotating system comprising two or more gyratory masses
- F16F15/133—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 the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
- F16F15/134—Wound springs
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- 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
- F16D33/00—Rotary fluid couplings or clutches of the hydrokinetic type
- F16D33/18—Details
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- 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
- F16F15/121—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 using springs as elastic members, e.g. metallic springs
- F16F15/123—Wound springs
- F16F15/12353—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
- F16F15/1236—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates
- F16F15/12366—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs
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- 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
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- 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
- F16H2045/0205—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up clutch
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- 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
- F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
- F16H2045/0226—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means comprising two or more vibration dampers
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- 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
- F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
- F16H2045/0226—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means comprising two or more vibration dampers
- F16H2045/0231—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means comprising two or more vibration dampers arranged in series
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- 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 present invention relates to a lockup device, and more particularly to a lockup device that is disposed in a space between a front cover of a torque converter and a turbine and mechanically connects the two.
- the torque converter is often provided with a lock-up device for transmitting torque directly from the front cover to the turbine.
- the lock-up device includes a piston that can be frictionally connected to the front cover, a drive plate fixed to the piston, a plurality of torsion springs supported by the drive plate, and a plurality of torsion springs that elastically rotate the piston in the rotational direction. And a driven plate to be connected. The driven plate is fixed to the turbine.
- the piston divides the space between the front cover and the turbine in the axial direction, and can move in the axial direction due to the hydraulic pressure difference on both sides in the axial direction. Then, when the friction facing that is annularly stretched around the outer periphery of the piston is pressed against the flat friction surface of the front cover, the torque of the front cover is transmitted to the lockup device.
- Patent Document 1 a device has already been proposed in which a torsion spring is disposed on each of an outer peripheral portion and an inner peripheral portion, and an outer peripheral side torsion spring and an inner peripheral side torsion spring are connected by an intermediate member. Yes.
- the outer periphery side torsion spring and the inner periphery side torsion spring act in series via the intermediate member. Moreover, in the torsion spring on the inner peripheral side, two coil springs are arranged so as to act in series. For this reason, the damper twist angle is wide.
- An object of the present invention is to further widen the damper twisting angle in the lockup device and further reduce the rigidity of the damper characteristics.
- a lockup device for a torque converter is a device that is disposed in a space between a front cover of a torque converter and a turbine and mechanically connects the two, a piston, a drive plate, The outer peripheral side elastic member, the float member, the driven plate, a plurality of inner peripheral side elastic members, and intermediate members are provided.
- the piston can be connected to the front cover.
- the drive plate is connected to the piston.
- Torque is input from the drive plate to the plurality of outer peripheral elastic members.
- the float member is rotatable relative to the drive plate, and causes at least two of the plurality of outer peripheral side elastic members to act in series.
- the driven plate is connected to the turbine.
- the plurality of inner peripheral side elastic members are disposed on the inner peripheral side of the outer peripheral side elastic member, and transmit torque to the driven plate.
- the intermediate member is rotatable relative to the drive plate and the driven plate, and transmits torque from the outer peripheral elastic member to the inner peripheral elastic member.
- torque from the engine is transmitted from the front cover to the piston and further to the drive plate.
- the torque transmitted to the drive plate is transmitted from the plurality of outer peripheral elastic members to the plurality of inner peripheral elastic members via the intermediate member, and further transmitted to the turbine via the driven plate.
- the plurality of outer peripheral side elastic members and inner peripheral side elastic members act in series via intermediate members. Further, at least two of the plurality of outer peripheral side elastic members act in series via the float member.
- the elastic member acts in series on the outer peripheral side where the circumferential distance can be increased, the damper twist angle can be further widened, and further reduction in rigidity can be achieved.
- the lockup device for a torque converter according to the second invention is the device according to the first invention, wherein the float member is provided so as to cover the outer peripheral portion of the outer peripheral elastic member.
- the float member can prevent the outer peripheral side elastic member from protruding to the outer peripheral side due to the centrifugal force.
- the outer peripheral elastic member expands and contracts, the outer peripheral portion of the outer peripheral elastic member and the inner peripheral surface of the float member are in sliding contact with each other, but the float member is movable in the circumferential direction. Slidable contact resistance is reduced, and hysteresis torque can be reduced.
- the lockup device for a torque converter according to the third invention is the device according to the first or second invention, wherein the float member is disposed between the piston and the outer peripheral elastic member in the axial direction.
- the damper torsion angle in the lock-up device can be further widened, and the damper characteristic can be further reduced in rigidity.
- FIG. 1 is a partial cross-sectional view of a torque converter including a lockup device according to an embodiment of the present invention.
- FIG. 1 is a partial sectional view of a torque converter 1 in which a lockup device according to an embodiment of the present invention is employed.
- An engine (not shown) is arranged on the left side of FIG. 1, and a transmission (not shown) is arranged on the right side of the figure.
- FIG. 2 is a partial front view of the lockup device.
- the torsion spring as an elastic member is omitted.
- OO shown in FIG. 1 is a rotation axis of the torque converter and the lockup device.
- the torque converter 1 is a device for transmitting torque from an engine-side crankshaft (not shown) to an input shaft of a transmission, and includes a front cover 2 fixed to an input-side member and three types of impellers ( A torque converter body 6 including an impeller 3, a turbine 4, and a stator 5) and a lockup device 7 are included.
- the front cover 2 is a disk-shaped member, and an outer peripheral cylindrical portion 10 protruding toward the axial transmission side is formed on the outer peripheral portion thereof.
- the impeller 3 includes an impeller shell 12 fixed to the outer peripheral cylindrical portion 10 of the front cover 2 by welding, a plurality of impeller blades 13 fixed to the inside thereof, and a cylindrical shape provided on the inner peripheral side of the impeller shell 12.
- the impeller hub 14 is disposed to face the impeller 3 in the fluid chamber.
- the turbine 4 includes a turbine shell 15, a plurality of turbine blades 16 fixed to the turbine shell 15, and a turbine hub 17 fixed to the inner peripheral side of the turbine shell 15.
- the turbine hub 17 has a flange 17 a extending to the outer peripheral side, and an inner peripheral portion of the turbine shell 15 is fixed to the flange 17 a by a plurality of rivets 18.
- An input shaft of a transmission (not shown) is splined to the inner peripheral portion of the turbine hub 17.
- the stator 5 is a mechanism for rectifying the hydraulic oil that is disposed between the inner periphery of the impeller 3 and the turbine 4 and returns from the turbine 4 to the impeller 3.
- the stator 5 is mainly composed of a disk-shaped stator carrier 20 and a plurality of stator blades 21 provided on the outer peripheral surface thereof.
- the stator carrier 20 is supported by a fixed shaft (not shown) via a one-way clutch 22.
- a thrust washer 25 is provided between the front cover 2 and the turbine hub 16 in the axial direction, and a thrust washer is provided between the turbine hub 17 and the stator carrier 20 and between the stator carrier 20 and the impeller shell 12. Bearings 26 and 27 are provided.
- the lockup device 7 is disposed in an annular space between the front cover 2 and the turbine 4.
- the lock-up device 7 mainly includes a piston 30, a drive plate 31, a plurality of outer and inner torsion springs 32, 33, an outer torsion spring 32, and an inner torsion spring 33, respectively. And an intermediate plate 34 and a driven plate 35.
- the piston 30 is a disk-shaped plate member, and is disposed so as to divide the space between the front cover 2 and the turbine 4 into two in the axial direction.
- the outer peripheral portion of the piston 30 is a flat friction connecting portion 30a, and a friction facing 37 is provided on the axial direction engine side of the friction connecting portion 30a.
- a flat friction surface is formed on the front cover 2 so as to face the friction facing 37.
- an inner peripheral cylindrical portion 30 b extending toward the axial transmission side is provided on the inner peripheral edge of the piston 30.
- the inner peripheral surface of the inner peripheral cylindrical portion 30 b is supported so as to be movable in the axial direction and the rotational direction with respect to the outer peripheral surface of the turbine hub 17.
- the piston 30 is restricted from moving further toward the axial transmission side in a state where the tip of the inner peripheral cylindrical portion 30b is in contact with a part of the turbine hub 17.
- a seal ring 38 is provided between the inner peripheral cylindrical portion 30 b and the outer peripheral surface of the turbine hub 17.
- a space A is formed between the front cover 2 and the piston 30.
- the outer peripheral portion of the space A is blocked with the friction facing 37 in contact with the front cover 2, and the inner peripheral portion of the space A is connected to an oil passage formed in the input shaft through a groove formed in the thrust washer 25. Communicate.
- the drive plate 31 is an annular member made of sheet metal, and is disposed on the axial transmission side of the friction coupling portion 30 a in the piston 30.
- An inner peripheral portion of the drive plate 31 is fixed to the piston 30 by a plurality of rivets 40.
- a plurality of locking portions 31 a extending toward the axial transmission side are formed on the outer peripheral portion of the drive plate 31.
- the plurality of locking portions 31 a are formed at predetermined intervals in the circumferential direction, and support the end surface of the outer peripheral side torsion spring 32.
- a support portion 31 b extending toward the axial transmission side is formed above the piston mounting portion of the drive plate 31.
- the inner peripheral side of the outer peripheral side torsion spring 32 is supported by the support portion 31b.
- Each of the plurality of outer peripheral side torsion springs 32 includes a combination of a large coil spring and a small coil spring that is inserted into the large coil spring and shorter than the spring length of the large coil spring.
- a total of eight outer peripheral side torsion springs 32 are provided for two sets, and the float member 42 is provided so that the two outer peripheral side torsion springs 32 of each set act in series.
- the float member 42 is an annular member having a C-shaped cross section and is disposed above the support portion 31 b of the drive plate 31.
- the float member 42 is disposed so as to be rotatable relative to the drive plate 31, and the outer peripheral portion supports the outer peripheral portion of the outer peripheral side torsion spring 32.
- the float member 42 restricts the outer peripheral side torsion spring 32 from protruding to the outer peripheral side.
- a front end portion 42 a of the float member 42 on the transmission side in the axial direction is bent on the inner peripheral side and the engine side. . That is, both end surfaces in the circumferential direction of the bent portion 42 a are in contact with the end surfaces of the corresponding torsion springs 32.
- both ends in the circumferential direction of the pair of outer peripheral side torsion springs 32 are supported by the locking portions 31 a of the drive plate 31, and in the middle of the pair of outer peripheral side torsion springs 32.
- the bent part 42a of the float member 42 is inserted into the part. Further, the outer peripheral portion of the outer peripheral side torsion spring 32 is supported by the outer peripheral portion of the float member 42.
- the intermediate member 34 is an annular and disk-shaped plate member disposed between the piston 30 and the turbine shell 15.
- the intermediate member 34 includes a first plate 44 and a second plate 45.
- the first plate 44 and the second plate 45 are arranged with an interval in the axial direction.
- the first plate 44 is disposed on the axial engine side, and the second plate 45 is disposed on the axial transmission side.
- the first plate 44 and the second plate 45 are connected to each other by a plurality of stopper pins 46 so that the outer peripheral portions thereof cannot rotate relative to each other and cannot move in the axial direction.
- the first plate 44 and the second plate 45 are respectively formed with windows 44a and 45a penetrating in the axial direction.
- the window portions 44 a and 45 a are formed to extend in the circumferential direction, and a cut-and-raised portion that is cut and raised in the axial direction is formed in the inner peripheral portion and the outer peripheral portion. .
- a plurality of locking portions 44 b extending to the outer peripheral side torsion spring 32 are formed at the outer peripheral end of the first plate 44.
- the plurality of locking portions 44b are formed by bending the tip of the first plate 44 toward the axial engine side.
- the plurality of locking portions 44b are arranged at predetermined intervals in the circumferential direction, and a pair of outer peripheral side torsion springs 32 that act in series are arranged between the two locking portions 44b. Yes.
- Each of the plurality of inner peripheral side torsion springs 33 includes a combination of a large coil spring and a small coil spring inserted into the large coil spring and having the same length as the spring length of the large coil spring.
- Each inner peripheral side torsion spring 33 is disposed in the windows 44 a and 45 a of both plates 44 and 45 of the intermediate member 34.
- Each inner torsion spring 33 is supported at both ends in the circumferential direction and both sides in the radial direction by the windows 44a and 45a. Furthermore, each inner peripheral side torsion spring 33 is restricted from projecting in the axial direction by the cut and raised portions of the window portions 44 and 45.
- the driven plate 35 is an annular and disk-shaped member, and an inner peripheral portion thereof is fixed to the flange 17 a of the turbine hub 17 by a rivet 18 together with the turbine shell 15.
- the driven plate 35 is disposed between the first plate 44 and the second plate 45 so as to be rotatable relative to both the plates 44 and 45.
- a window hole 35 a is formed in the outer peripheral portion of the driven plate 35 corresponding to the window portions 44 a and 45 a of the first and second plates 44 and 45.
- the window hole 35a is a hole penetrating in the axial direction, and an inner peripheral torsion spring 33 is disposed in the window hole 35a.
- a plurality of notches 35b that are long in the circumferential direction are formed on the outer peripheral portion of the driven plate 35, as indicated by broken lines in FIG. And the stopper pin 46 has penetrated this notch 35b to the axial direction. Therefore, the driven plate 35 and the plates 44 and 45 constituting the intermediate member 34 can be rotated relative to each other within an angle range where the notch 35b is formed.
- the torque is transmitted in the order of the piston 30, the drive plate 31, the outer peripheral side torsion spring 32, the intermediate member 34, the inner peripheral side torsion spring 33, and the driven plate 35, and is output to the turbine hub 17.
- the lockup device 7 transmits torque and absorbs and attenuates torque fluctuations input from the front cover 2. Specifically, when torsional vibration occurs in the lockup device 7, the outer peripheral side torsion spring 32 and the inner peripheral side torsion spring 33 are compressed in series between the drive plate 31 and the driven plate 35. Furthermore, also in the outer peripheral side torsion spring 32, one set of outer peripheral side torsion springs 32 is compressed in series. For this reason, the twist angle can be widened. In addition, since the outer peripheral side torsion spring 32 that can take a long distance in the circumferential direction acts in series, a wider torsion angle can be secured. This means that the torsional characteristics can be further reduced in rigidity, and vibration absorption / damping performance can be further improved.
- this lockup device 7 has a two-stage torsional characteristic.
- the outer peripheral side torsion spring 32 tries to move to the outer peripheral side by centrifugal force. For this reason, the member which controls the movement to the outer peripheral side of the outer peripheral side torsion spring 32 is needed.
- the movement of the outer peripheral side torsion spring 32 to the outer peripheral side is regulated by supporting the outer peripheral part of the outer peripheral side torsion spring 32 by the float member 42. At this time, since the float member 42 moves together with the outer peripheral side torsion spring 32, the sliding resistance can be reduced as compared with the case where the outer peripheral portion of the outer peripheral side torsion spring is supported by the drive plate as in the conventional device. it can.
- the hysteresis torque as a whole is a combination of the hysteresis torque on the inner peripheral side and the outer peripheral side.
- the hysteresis torque of the outer peripheral side torsion spring is small and the hysteresis torque of the inner peripheral side torsion spring is not different from that shown in the conventional patent document 1, and therefore the hysteresis torque as a whole. Becomes smaller. Therefore, vibration absorption / damping performance can be improved, and fuel consumption can be reduced by expanding the lock-up region.
- the elastic member is configured by a coil spring, but an elastic member formed of another resin or the like may be used.
- the number and length of the coil springs constituting the outer peripheral side and inner peripheral side torsion springs are not limited to the above embodiment.
- the damper twist angle in the lock-up device can be further widened, and the damper characteristic can be further reduced in rigidity.
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Abstract
Description
トルクコンバータ1は、エンジン側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にトルクを伝達するための装置であり、入力側の部材に固定されるフロントカバー2と、3種の羽根車(インペラー3、タービン4、ステータ5)からなるトルクコンバータ本体6と、ロックアップ装置7とから構成されている。
ロックアップ装置7は、フロントカバー2とタービン4との間の環状の空間に配置されている。ロックアップ装置7は、主に、ピストン30と、ドライブプレート31と、それぞれ複数の外周側及び内周側のトーションスプリング32,33と、外周側のトーションスプリング32と内周側のトーションスプリング33とを連結する中間部材34と、ドリブンプレート35と、を有している。
ピストン30は円板状のプレート部材であり、フロントカバー2とタービン4との間の空間を軸方向に2分割するように配置されている。ピストン30の外周部は平坦な摩擦連結部30aとなっており、この摩擦連結部30aの軸方向エンジン側には摩擦フェーシング37が設けられている。この摩擦フェーシング37に対向して、フロントカバー2には平坦な摩擦面が形成されている。また、ピストン30の内周縁には軸方向トランスミッション側に延びる内周筒状部30bが設けられている。内周筒状部30bの内周面はタービンハブ17の外周面に対して軸方向及び回転方向に移動可能に支持されている。なお、内周筒状部30bの先端がタービンハブ17の一部に当接した状態で、ピストン30がそれ以上軸方向トランスミッション側に移動するのが規制されている。内周筒状部30bとタービンハブ17の外周面との間にはシールリング38が設けられている。
ドライブプレート31は、板金製の環状の部材であり、ピストン30における摩擦連結部30aの軸方向トランスミッション側に配置されている。このドライブプレート31の内周部が複数のリベット40によってピストン30に固定されている。また、ドライブプレート31の外周部には、軸方向トランスミッション側に延びる複数の係止部31aが形成されている。複数の係止部31aは円周方向に所定の間隔をあけて形成されており、外周側トーションスプリング32の端面を支持している。さらに、ドライブプレート31のピストン取付部の上方には、軸方向トランスミッション側に延びる支持部31bが形成されている。この支持部31bによって外周側トーションスプリング32の内周側が支持されている。
複数の外周側トーションスプリング32のそれぞれは、大コイルスプリングと、大コイルスプリングの内部に挿入され大コイルスプリングのスプリング長より短い小コイルスプリングと、の組合せからなる。ここでは、1組2個で合計8個の外周側トーションスプリング32が設けられており、各組の2個の外周側トーションスプリング32が直列に作用するように、フロート部材42が設けられている。フロート部材42は、断面C字状で環状の部材であり、ドライブプレート31の支持部31bの上方に配置されている。このフロート部材42は、ドライブプレート31と相対回転可能に配置されており、外周部が外周側トーションスプリング32の外周部を支持している。すなわち、フロート部材42によって外周側トーションスプリング32の外周側への飛び出しを規制している。フロート部材42の軸方向トランスミッション側の先端部42aは、内周側でかつエンジン側に折り曲げられており、この先端部の折り曲げ部42aが1組の外周側トーションスプリング32の間に挿入されている。すなわち、折り曲げ部42aの円周方向の両端面が、対応するトーションスプリング32の端面に当接している。
中間部材34は、ピストン30とタービンシェル15との間に配置された環状かつ円板状のプレート部材である。中間部材34は第1プレート44と第2プレート45とから構成されている。第1プレート44と第2プレート45とは軸方向に間隔を開けて配置されている。第1プレート44が軸方向エンジン側に配置され、第2プレート45が軸方向トランスミッション側に配置されている。第1プレート44と第2プレート45とは、外周部が複数のストッパピン46によって互いに相対回転不能でかつ軸方向に移動不能に連結されている。第1プレート44及び第2プレート45には、それぞれ軸方向に貫通する窓部44a,45aが形成されている。窓部44a,45aは、図2から明らかなように、円周方向に延びて形成されており、内周部と外周部には、軸方向に切り起こされた切り起こし部が形成されている。
複数の内周側トーションスプリング33のそれぞれは、大コイルスプリングと、大コイルスプリングの内部に挿入され大コイルスプリングのスプリング長と同じ長さの小コイルスプリングと、の組合せからなる。各内周側トーションスプリング33は、中間部材34の両プレート44,45の窓部44a,45a内に配置されている。そして、各内周側トーションスプリング33は窓部44a,45aによって円周方向両端及び半径方向両側が支持されている。さらに、各内周側トーションスプリング33は窓部44,45の切り起こし部によって軸方向への飛び出しが規制されている。
ドリブンプレート35は、環状かつ円板状の部材であり、内周部がタービンシェル15とともにリベット18によってタービンハブ17のフランジ17aに固定されている。このドリブンプレート35は、第1プレート44と第2プレート45との間に、両プレート44,45に対して相対回転可能に配置されている。そして、ドリブンプレート35の外周部には、第1及び第2プレート44,45の窓部44a,45aに対応して、窓孔35aが形成されている。窓孔35aは軸方向に貫通する孔であり、この窓孔35aに内周側トーションスプリング33が配置されている。また、ドリブンプレート35の外周部には、図2の破線で示すように、円周方向に長い複数の切欠き35bが形成されている。そして、この切欠き35bをストッパピン46が軸方向に貫通している。したがって、ドリブンプレート35と中間部材34を構成する両プレート44,45とは、この切欠き35bが形成された角度範囲内で相対回転が可能である。
次に、動作について説明する。エンジン側のクランクシャフトからのトルクはフロントカバー2に入力される。これにより、インペラー3が回転し、作動油がインペラー3からタービン4へ流れる。この作動油の流れによりタービン4は回転し、タービン4のトルクは図示しない入力シャフトに出力される。
本発明は以上のような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。
2 フロントカバー
4 タービン
7 ロックアップ装置
30 ピストン
31 ドライブプレート
32 外周側トーションスプリング
33 内周側トーションスプリング
34 中間部材
35 ドリブンプレート
42 フロート部材
Claims (3)
- トルクコンバータのフロントカバーとタービンとの間の空間に配置され、両者を機械的に接続するためのロックアップ装置であって、
前記フロントカバーに連結可能なピストンと、
前記ピストンに連結されたドライブプレートと、
前記ドライブプレートからトルクが入力される複数の外周側弾性部材と、
前記ドライブプレートと相対回転可能であり、前記複数の外周側弾性部材の少なくとも2つを直列に作用させるフロート部材と、
前記タービンに連結されたドリブンプレートと、
前記外周側弾性部材の内周側に配置され、前記ドリブンプレートにトルクを伝達する複数の内周側弾性部材と、
前記ドライブプレート及び前記ドリブンプレートと相対回転可能であり、トルクを前記外周側弾性部材から前記内周側弾性部材に伝達するための中間部材と、
を備えたトルクコンバータ用ロックアップ装置。 - 前記フロート部材は前記外周側弾性部材の外周部を覆うように設けられている、請求項1に記載のトルクコンバータ用ロックアップ装置。
- 前記フロート部材は、軸方向において前記ピストンと前記外周側弾性部材との間に配置されている、請求項1又は2に記載のトルクコンバータ用ロックアップ装置。
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CN201080035840.1A CN102472378B (zh) | 2009-08-26 | 2010-08-10 | 转矩变换器用锁定装置 |
DE112010003407.9T DE112010003407B4 (de) | 2009-08-26 | 2010-08-10 | Wandlerüberbrückungsvorrichtung |
US13/379,974 US8746425B2 (en) | 2009-08-26 | 2010-08-10 | Torque converter lock-up device |
KR1020127000481A KR101348328B1 (ko) | 2009-08-26 | 2010-08-10 | 토크 컨버터용 록업 장치 |
US14/265,842 US9163677B2 (en) | 2009-08-26 | 2014-04-30 | Torque converter lock-up device |
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JP2009195109A JP4773553B2 (ja) | 2009-08-26 | 2009-08-26 | トルクコンバータ用ロックアップ装置 |
JP2009-195109 | 2009-08-26 |
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US13/379,974 A-371-Of-International US8746425B2 (en) | 2009-08-26 | 2010-08-10 | Torque converter lock-up device |
US14/265,842 Continuation US9163677B2 (en) | 2009-08-26 | 2014-04-30 | Torque converter lock-up device |
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JP (1) | JP4773553B2 (ja) |
KR (1) | KR101348328B1 (ja) |
CN (1) | CN102472378B (ja) |
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JP2013060997A (ja) * | 2011-09-13 | 2013-04-04 | Exedy Corp | トルクコンバータのロックアップ装置 |
JP2013064457A (ja) * | 2011-09-20 | 2013-04-11 | Exedy Corp | トルクコンバータのロックアップ装置 |
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JP4773553B2 (ja) * | 2009-08-26 | 2011-09-14 | 株式会社エクセディ | トルクコンバータ用ロックアップ装置 |
JP5418531B2 (ja) | 2011-03-28 | 2014-02-19 | アイシン・エィ・ダブリュ株式会社 | ダンパ装置 |
JP5844601B2 (ja) | 2011-10-18 | 2016-01-20 | ジヤトコ株式会社 | 振動減衰装置 |
US20130255242A1 (en) * | 2012-03-30 | 2013-10-03 | Caterpillar Inc. | Impeller with associated wear member |
CN104620015B (zh) * | 2012-07-18 | 2016-07-06 | 舍弗勒技术股份两合公司 | 振动减振器,尤其是用于机动车的振动减振器以及相应的摩擦离合器和相应的机动车 |
DE102012213015A1 (de) * | 2012-07-25 | 2014-02-13 | Zf Friedrichshafen Ag | Anfahrelement mit Torsionsschwingungsdämpfer und Schwingungstilger |
JP5555748B2 (ja) * | 2012-09-13 | 2014-07-23 | 株式会社エクセディ | トルクコンバータのロックアップ装置 |
JP5805704B2 (ja) * | 2013-05-16 | 2015-11-04 | 株式会社エクセディ | トルクコンバータのロックアップ装置 |
DE102014214553A1 (de) * | 2013-08-06 | 2015-02-12 | Schaeffler Technologies Gmbh & Co. Kg | Deckelbaugruppe für einen Drehmomentwandler, die eine Antriebsplatte mit einem elastischen Vorspannungselement aufweist |
JP5828030B1 (ja) * | 2014-10-29 | 2015-12-02 | 株式会社エクセディ | トルクコンバータのロックアップ装置 |
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CN102472378A (zh) | 2012-05-23 |
KR20120034191A (ko) | 2012-04-10 |
US20140231204A1 (en) | 2014-08-21 |
DE112010003407T5 (de) | 2012-08-09 |
JP2011047442A (ja) | 2011-03-10 |
KR101348328B1 (ko) | 2014-01-08 |
JP4773553B2 (ja) | 2011-09-14 |
US9163677B2 (en) | 2015-10-20 |
US20120090936A1 (en) | 2012-04-19 |
US8746425B2 (en) | 2014-06-10 |
CN102472378B (zh) | 2015-04-15 |
DE112010003407B4 (de) | 2016-09-22 |
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