WO2013128590A1 - 振動低減装置 - Google Patents
振動低減装置 Download PDFInfo
- Publication number
- WO2013128590A1 WO2013128590A1 PCT/JP2012/055031 JP2012055031W WO2013128590A1 WO 2013128590 A1 WO2013128590 A1 WO 2013128590A1 JP 2012055031 W JP2012055031 W JP 2012055031W WO 2013128590 A1 WO2013128590 A1 WO 2013128590A1
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- Prior art keywords
- input
- vibration
- output
- rotating member
- side rotating
- 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
- 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
- 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
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1028—Vibration-dampers; Shock-absorbers using inertia effect the inertia-producing means being a constituent part of the system which is to be damped
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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
- F16H2045/0221—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
- F16H2045/0252—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 having a damper arranged on input side of the 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
- F16H2045/0263—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 the damper comprising a pendulum
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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
- F16H2045/0278—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 comprising only two co-acting friction surfaces
Definitions
- the present invention relates to an apparatus for reducing torsional vibration, and in particular, a vibration reducing apparatus having a configuration in which a rotating body that is rotatable relative to the rotating body is accommodated in a rotating body that receives torque. It is about.
- Rotating bodies such as drive shafts and gears for transmitting the torque generated by the power source to the target location or member are caused by fluctuations in the input torque itself, fluctuations in the load, friction, etc. Inevitably vibrates. The frequency of the vibration changes according to the number of rotations, and a higher-order vibration higher than the secondary vibration is also generated. Therefore, the amplitude becomes large due to resonance, which may cause noise and durability deterioration. is there. For this reason, devices or mechanisms for preventing vibration as described above are widely used in various devices that transmit power by rotation. Examples thereof are described in JP 2010-255853 A, JP 11-31309 A, or JP 2011-208774 A.
- a vibration reducing device described in Japanese Patent Application Laid-Open No. 2010-255853 includes an elastic damper that reduces vibration using an elastic action of a spring in a power transmission path that is output from a turbine runner constituting a torque converter, and its elasticity The vibration of the torque output from the power source is reduced and transmitted by the pendulum damper provided on the rotating body on the output side of the damper.
- the configuration of the vibration reducing device described in Japanese Patent Application Laid-Open No. 2010-255853 is configured so that torque is transmitted from the output disk connected to the turbine runner to the intermediate housing via a spring.
- the intermediate housing is connected to the output shaft and is provided to be rotatable relative to the turbine runner.
- the vibration reducing apparatus described in Japanese Patent Application Laid-Open No. 2010-255853 reduces the vibration of the torque output from the turbine runner by the elastic damper and reduces the vibration of the torque transmitted to the intermediate housing by the pendulum damper. be able to.
- the vibration reducing device described in Japanese Patent Application Laid-Open No. 11-311309 is configured to arrange an elastic damper and a pendulum damper inside the torque converter.
- the pendulum damper described in Japanese Patent Application Laid-Open No. 11-311309 is formed by recessing a wall portion constituting a torque converter so as to increase the volume, and by forming a recess in the recess, The rolling element swings along the wall surface to reduce vibration.
- the recess is formed so that oil supplied to the inside of the torque converter flows into the recess, and the oil causes a wall surface of the recess and a contact surface of the rolling element that swings along the wall surface of the recess. It is configured to lubricate.
- the elastic damper described in Japanese Patent Application Laid-Open No. 11-311309 is configured to reduce torque vibration in the process in which power is transmitted from a lockup clutch provided in the torque converter to the output shaft. . Therefore, the vibration reducing device described in Japanese Patent Laid-Open No. 11-311309 reduces the torque transmitted from the power source by the pendulum damper, and is input to the lockup clutch when the lockup clutch is engaged. By transmitting the power to the output shaft through the elastic damper, vibration can be reduced by the elastic action of the elastic damper.
- the vibration reducing device described in Japanese Patent Application Laid-Open No. 2011-208774 is configured to reduce the vibration of torque transmitted from the engine to the torque converter by an elastic damper and a pendulum damper.
- An elastic damper is constituted by a holder that rotates integrally with the crankshaft and a plate that transmits power from the holder via a spring, and is integrated with the plate.
- a pendulum damper is configured by forming a rolling chamber in which the rolling element swings by the rotating member and accommodating the rolling element in the rolling chamber. Therefore, the vibration reducing device described in Japanese Patent Application Laid-Open No. 2011-208774 can reduce the vibration of the torque input to the torque converter by the elastic damper and the pendulum damper.
- the pendulum damper when the pendulum damper is provided so as to reduce the vibration of the torque output from the torque converter, it is desirable to provide the pendulum damper inside the torque converter in order to improve the mountability of the pendulum damper. From such a request, if the pendulum damper described in Japanese Patent Application Laid-Open No. 2010-255853 is provided inside the torque converter, or if the pendulum damper described in Japanese Patent Application Laid-Open No. 11-31309 is used, Since the rolling elements that make up the pendulum damper are immersed in the oil, the vibration resistance of the rolling elements changes due to the viscous resistance of the oil, or the viscosity resistance changes with temperature, etc. There is a possibility that the effect of.
- the effect of vibration reduction by the pendulum damper changes according to the mass ratio between the rolling element and the rotating element. That is, when the mass of the rolling element becomes relatively large with respect to the mass of the rotating body, the vibration reduction effect is improved. Therefore, as described in Japanese Patent Application Laid-Open No. 11-31309, in a configuration in which the housing surrounding the rolling element is formed integrally with a rotating body that reduces vibration by a pendulum damper, the housing also has a mass of the rotating body. Since it becomes a part, the mass ratio between the rolling elements and these rotating bodies becomes small, and the vibration reduction effect may be reduced.
- This invention was made paying attention to said technical subject, and provides the vibration reduction apparatus which can improve the vibration reduction effect of the damper provided with the rolling chamber which accommodates a rolling element. It is the purpose.
- the present invention is provided with an input-side rotating member that transmits power to the elastic body and the input-side rotating member that can rotate relative to the input-side rotating member, and the power is transmitted from the elastic body.
- the vibration reduction device for reducing vibration of the output rotation member in the power transmission device including the output side rotation member that is driven, a rolling chamber that rotates integrally with the input side rotation member; and And a rolling element housed in the same direction as the output side rotating member and so as to be rotatable relative to the output side rotating member.
- the input side rotating member includes a cover member of a fluid transmission device that transmits power by a fluid flow, and the output side rotating member is driven by the fluid flow.
- the rolling chamber includes a member that rotates integrally with the member, and the rolling chamber is disposed inside the cover member, and seals the fluid that drives the driven member from flowing into the rolling chamber.
- a vibration reducing device characterized in that a seal member is provided.
- the input side rotating member includes a direct coupling clutch that mechanically transmits the input torque of the fluid transmission device to the output member of the fluid transmission device. Device.
- the present invention is characterized in that, in the above invention, the direct coupling clutch is engaged with the rolling element so as to be able to move in the axial direction relative to the rolling chamber.
- This is a vibration reducing device.
- this invention is the above-mentioned invention, wherein the input side rotating member includes an input side plate and an output side plate arranged opposite to each other in the axial direction,
- the outer peripheral surface of at least one of the input side plate and the output side plate and the direct coupling clutch are in spline engagement.
- a rolling element is provided in a rolling chamber that rotates integrally with the input side rotating member in the same direction as the output side rotating member and is relatively rotatable. Therefore, since the rolling chamber that houses the rolling element rotates integrally with the member on the input side of the elastic body, the mass of the rotating body for reducing vibration is reduced by the rolling element swinging. Can do.
- the mass of the rolling element can be relatively increased with respect to the mass of the rotating body for reducing the vibration by the oscillation of the rolling element, the effect of reducing the vibration due to the oscillation of the rolling element is improved. be able to.
- the mass of the rotating body on the input side of the elastic body increases by the mass of the rolling chamber, the moment of inertia of the rotating body on the input side can be increased. The function as a so-called mass damper can be increased.
- the fluid when the rolling chamber is disposed inside the cover member in the fluid transmission device, the fluid can be prevented from flowing into the rolling chamber by the seal member. Can be in a dry state. As a result, it is possible to suppress or prevent the viscous resistance due to the viscosity of the fluid from acting on the rolling element, so that the effect of reducing the vibration due to the rolling element swinging is reduced, or the rolling element It is possible to suppress or prevent the swinging vibration order from shifting.
- FIG. 1 shows an example in which a vibration reducing device is provided inside a torque converter 1 which is a fluid transmission device having a torque amplifying function.
- the torque converter 1 shown here is the same as a torque converter widely installed in conventional vehicles. It has the composition of. That is, the pump impeller 2 that is a member on the input side is configured by attaching the pump blades 3 arranged in an annular shape to the inner surface of the pump shell 4, and the turbine runner 5 is disposed facing the pump impeller 2. Yes.
- the turbine runner 5 has a shape that is substantially symmetric to the pump impeller 2, and is configured by fixing a large number of annularly arranged turbine blades 6 on the inner surface of an annular (or semi-doughnut-shaped) shell. Has been. Accordingly, the pump impeller 2 and the turbine runner 5 are arranged to face each other on the same axis.
- a front cover 7 covering the outer peripheral side of the turbine runner 5 is integrally joined to the outer peripheral end of the pump shell 4.
- the front cover 7 is a so-called bottomed cylindrical member having a front wall surface facing the inner surface of the pump shell 4, and oil is sealed in the inside thereof. Therefore, when the power is transmitted to the turbine runner 5 and rotated, a fluid flow enclosed in the front cover 7 is generated, and the turbine runner 5 rotates by the fluid flow to transmit the power.
- a cylindrical member 8 protruding toward the outer surface is integrally formed at the center of the front cover 7, and an engine output shaft (not shown) is inserted into the hollow portion of the cylindrical member 8.
- a plurality of nuts 9 for connecting to a drive plate (not shown) that rotates integrally with the output shaft of the engine are provided on the outer surface on the outer peripheral side of the front cover 7 in the circumferential direction. Power is transmitted to the cover 7.
- a cylindrical shaft 10 is integrally provided at an inner peripheral end portion of the pump shell 4, and the cylindrical shaft 10 extends to the back side (opposite side of the engine side) of the pump shell 4. Not connected to the oil pump.
- a fixed shaft 11 having an outer diameter smaller than the inner diameter of the cylindrical shaft 10 is inserted into the cylindrical shaft 10, and the tip portion of the torque converter 1 surrounded by the pump shell 4 and the front cover 7 is inserted. It extends to the inside.
- the distal end portion of the fixed shaft 11 is located on the inner peripheral side of the turbine runner 5 described above or the inner peripheral side of the portion between the pump impeller 2 and the turbine runner 5.
- the inner race of the clutch 12 is spline-fitted.
- a stator 13 disposed between the inner peripheral portion of the pump impeller 2 and the inner peripheral portion of the turbine runner 5 facing the outer periphery of the one-way clutch 12 is attached. That is, in a state where the speed ratio between the pump impeller 2 and the turbine runner 5 is small, the rotation of the stator 13 is prevented by the one-way clutch 12 even if the oil flowing out from the turbine runner 5 acts on the stator 13. In a state where oil is fed into the pump impeller 2 by changing the flow direction of the oil and the speed ratio becomes large and the oil strikes the so-called back surface of the stator 13, the stator 13 is rotated so as not to disturb the oil flow. It is configured.
- An output shaft (input shaft of a transmission (not shown)) 14 is rotatably inserted on the inner peripheral side of the fixed shaft 11, and its distal end protrudes (beyons) the distal end of the fixed shaft 11.
- a hub shaft 15 is spline-fitted to the outer periphery of the front end that extends from the fixed shaft 11 and extends near the inner surface of the front cover 7.
- the hub shaft 15 is formed with a flange-shaped hub 16 projecting outwardly, and the turbine runner 5 described above is connected to the hub 16 so as to be integrated with the hub 16 by a rivet 17.
- a cylindrical portion 18 formed integrally with the hub 16 so as to protrude toward the engine side is provided on the outer peripheral side of the hub 16, and the outer peripheral surface of the cylindrical portion 18 corresponds to the output side rotating member in the present invention.
- An annular center plate 19 is integrated. In other words, the hollow portion of the center plate 19 is integrated with the cylindrical portion 18 to be integrated.
- a lock-up clutch 20 is provided on the outer peripheral side of the hub shaft 15 on the engine side from the hub 16.
- the lock-up clutch 20 is configured such that the piston moves in the axial direction according to the hydraulic pressure difference between the front and back surfaces of the piston, and can be configured similarly to a conventionally known lock-up clutch. .
- the configuration of the lock-up clutch 20 will be specifically described.
- the lock-up piston 21 is formed in an annular shape, and the inner peripheral portion of the lock-up piston 21 is bent toward the engine side and can rotate relative to the hub shaft 15.
- a friction plate 23 provided on a wall surface on the outer peripheral side of the lock-up piston 21, more specifically, a wall surface facing the front cover 7.
- the lock-up clutch 20 is configured to be engaged when the speed ratio between the input rotational speed and the output rotational speed of the torque converter 1 shown in the figure is 1, and the torque converter 1 shown in the figure is engaged.
- the lockup clutch 20 is engaged when the mounted vehicle is in steady running.
- an annular input side plate 24 is provided on the engine side of the center plate 19, and a bottomed cylindrical output side plate 25 is provided on the turbine runner 5 side of the center plate 19. That is, the input side plate 24 and the output side plate 25 are disposed so as to sandwich the center plate 19. Further, the input side plate 24 is integrally connected to the outer peripheral end of the output side plate 25 so as to close the opening of the output side plate 25. Further, the input side plate 24 and the output side plate 25 are fitted to the cylindrical portion 18 so as to be relatively rotatable. That is, the input side plate 24 and the output side plate 25 rotate integrally, and the plates 24 and 25 and the center plate 19 can be rotated relative to each other.
- the input side plate 24 and the output side plate 25 correspond to the input side rotating member in the present invention, and each of the plates 24 and 25 functions as a housing that houses a rolling element 28 described later.
- the center plate 19, the input side plate 24, and the output side plate 25 are respectively provided with receiving holes 19 a penetrating in the axial direction at the same location in the radial direction, as shown in FIG. 2.
- a spring 26 that can be expanded and contracted in the circumferential direction is arranged at 19a. That is, when the rotational speed of the input side plate 24 and the output side plate 25 increases or decreases with respect to the rotational speed of the center plate 19, the spring 26 is circumferentially moved by the input side plate 24, the output side plate 25, and the center plate 19. It is arranged to be compressed in the direction. Therefore, the vibration of the torque input to the input side plate 24 and the output side plate 25 can be reduced by the elastic action of the spring 26 and the torque can be transmitted to the center plate 19. That is, the spring 26 is configured to function as an elastic damper.
- seal members 27 and 27 for sealing the gaps between the center plate 19 and the respective plates 24 and 25 are provided on the outer peripheral side from the place where the spring 26 is provided, and the seal members 27 and 27 are provided.
- the plates 24 and 25 form a space A corresponding to the rolling chamber in the present invention. That is, the oil supplied to the inside of the torque converter 1 does not flow into the space A formed by the seal members 27, 27 and the plates 24, 25.
- the space A is so-called dry. The state is maintained.
- a plurality of rolling elements 28 held by the center plate 19 are arranged.
- a plurality of insertion holes 19b into which the rolling elements 28 are inserted in the space A are formed along the circumferential direction of the center plate 19, and the rolling elements 28 are respectively provided in the respective insertion holes 19b.
- the outer diameter of both end portions in the axial direction of the rolling element 28 is formed larger than the width of the insertion hole 19b formed in the center plate 19. ing.
- the intermediate part formed smaller than the outer diameter of both ends of the rolling element 28 is inserted into the insertion hole 19 b formed in the center plate 19.
- the inner wall surface 19c on the outer peripheral side is formed in an arc shape, and the rolling element 28 swings along the inner wall surface 19c. That is, the rolling element 28 is inserted into the center plate 19 so as to rotate in the same direction as the center plate 19 and to rotate relative to the center plate 19. More specifically, the shape of the inner wall surface 19c will be described.
- the lockup clutch 20 is engaged, the inner wall surface is made to swing the rolling element 28 in accordance with the order of torque vibration input to the front cover 7. 19c is formed.
- the shape of the wall surface facing the inner wall surface 19c is not particularly limited.
- the rolling element 28 shown in the figure has large both end portions in order to prevent the rolling element 28 from being detached from the insertion hole 19b formed in the center plate 19 in the axial direction.
- the shape of the rolling element is not limited. In short, it may be configured so that the rolling element 28 can swing along the insertion hole 19b.
- the rolling element 28 swings along the inner wall surface 19 c of the insertion hole 19 b formed in the center plate 19, lubrication between the rolling element 28 and the inner wall surface 19 c of the insertion hole 19 b formed in the center plate 19 is performed.
- the surface of the rolling element 28 may be coated with resin, and grease is applied to the outer peripheral surface of the rolling element 28 or the inner wall surface 19c of the insertion hole 19b formed in the center plate 19. Also good.
- a sleeve is formed on the outer peripheral surface of each of the plates 24 and 25, and a spline that engages with the sleeve is formed on the outer peripheral portion of the lockup piston 21 described above. Therefore, the lock-up piston 21 and the plates 24 and 25 rotate together, and the lock-up piston 21 can move in the axial direction with respect to the plates 24 and 25.
- the torque transmitted from the drive plate to the front cover 7 is transmitted to the lockup piston 21 via the friction plate 23. Further, since the lockup piston 21 and the input side plate 24 and the output side plate 25 are spline-engaged, the power transmitted to the lockup piston 21 is transmitted to the plates 24 and 25. That is, the lockup piston 21 and the plates 24 and 25 rotate together. Further, the torque transmitted to the plates 24 and 25 is transmitted to the center plate 19 via the spring 26. At that time, the vibration of the torque transmitted to each of the plates 24 and 25 is reduced by the spring 26 and transmitted to the center plate 19. The torque transmitted to the center plate 19 is transmitted to the output shaft 14 via the hub shaft 15. That is, the center plate 19, the hub shaft 15 and the output shaft 14 rotate together. Since the hub shaft 15 and the turbine runner 5 are integrated by the rivet 17, the turbine runner 5 also rotates integrally with the center plate 19.
- the rotating body whose vibration is reduced by the rolling elements 28 is a hub shaft 15, the turbine runner 5, the output shaft 14, and a transmission (not shown) connected to the output shaft 14. That is, a member provided to form a space A in which the rolling element 28 is accommodated from a rotating object whose vibration is reduced by the rolling element 28, more specifically, the input side plate 24 and the output side plate 25.
- the seal member 27 is removed.
- the mass of the input side plate 24, the output side plate 25, and the seal member 27 can be excluded from the mass of the rotating body whose vibration is reduced by the rolling element 28.
- the mass (mass ratio) of the rolling element 28 with respect to the mass of the rotating body can be increased.
- the vibration reduction effect can be improved by increasing the mass ratio.
- the input side mass of the spring 26 can be increased by rotating the input side plate 24, the output side plate 25, and the seal member 27 together with the front cover 7.
- the moment of inertia in the rotating body on the input side of the spring 26 can be increased, and the function as a so-called mass damper can be increased, so that vibration input to the spring 26 can be reduced.
- the vibration input by the rolling element 28 to the target rotating body whose vibration is to be reduced can be reduced.
- the fluid transmission device according to the present invention only needs to have a drive side member and a driven side member, and thus may be a fluid transmission device or a fluid coupling other than the above-described torque converter having a torque amplification action.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Vibration Dampers (AREA)
Abstract
Description
前記入力側プレートと前記出力側プレートとの少なくともいずれか一方の外周面と、前記直結クラッチとがスプライン係合していることを特徴とする振動低減装置である。
n=√(R/L)
Claims (5)
- 弾性体に動力を伝達する入力側回転部材と、該入力側回転部材と相対回転することができるように設けられ、前記弾性体から動力が伝達されて駆動する出力側回転部材とを備えた動力伝達装置における前記出力回転部材の振動を低減する振動低減装置において、
前記入力側回転部材と一体に回転する転動室と、
該転動室に、前記出力側回転部材と同方向でかつ前記出力側回転部材に対して相対回転可能に収容された転動体と
を備えていることを特徴とする振動低減装置。 - 前記入力側回転部材は、流体流によって動力を伝達する流体伝動装置のカバー部材を含み、
前記出力側回転部材は、前記流体流によって駆動させられる従動側部材と一体となって回転する部材を含み、
前記転動室は、前記カバー部材の内部に配置され、
前記転動室の内部に前記従動側部材を駆動させる流体が流入しないように封止するシール部材が設けられている
ことを特徴とする請求項1に記載の振動低減装置。 - 前記入力側回転部材は、前記流体伝動装置の入力トルクを機械的に該流体伝動装置の出力部材に伝達する直結クラッチを含むことを特徴とする請求項2に記載の振動低減装置。
- 前記直結クラッチは、前記転動室に対して相対的に軸線方向に移動することができるように、前記転動体と係合されていることを特徴とする請求項3に記載の振動低減装置。
- 前記入力側回転部材は、軸線方向に対向して配置された入力側プレートと、出力側プレートとを含み、
前記入力側プレートと前記出力側プレートとの少なくともいずれか一方の外周面と、前記直結クラッチとがスプライン係合していることを特徴とする請求項3ないし5のいずれかに記載の振動低減装置。
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CN201280070749.2A CN104136802B (zh) | 2012-02-29 | 2012-02-29 | 减振装置 |
JP2014501894A JP5850132B2 (ja) | 2012-02-29 | 2012-02-29 | 振動低減装置 |
PCT/JP2012/055031 WO2013128590A1 (ja) | 2012-02-29 | 2012-02-29 | 振動低減装置 |
US14/362,332 US9416860B2 (en) | 2012-02-29 | 2012-02-29 | Vibration damping device |
EP12870149.7A EP2821669B2 (en) | 2012-02-29 | 2012-02-29 | Vibration reduction device |
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Also Published As
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US9416860B2 (en) | 2016-08-16 |
CN104136802B (zh) | 2016-01-20 |
CN104136802A (zh) | 2014-11-05 |
EP2821669B2 (en) | 2023-02-22 |
JPWO2013128590A1 (ja) | 2015-07-30 |
EP2821669A4 (en) | 2016-04-13 |
EP2821669B1 (en) | 2018-07-04 |
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US20140374207A1 (en) | 2014-12-25 |
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