WO2011132270A1 - トルクリミッタおよび動力伝達装置 - Google Patents
トルクリミッタおよび動力伝達装置 Download PDFInfo
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- WO2011132270A1 WO2011132270A1 PCT/JP2010/057046 JP2010057046W WO2011132270A1 WO 2011132270 A1 WO2011132270 A1 WO 2011132270A1 JP 2010057046 W JP2010057046 W JP 2010057046W WO 2011132270 A1 WO2011132270 A1 WO 2011132270A1
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- WIPO (PCT)
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- plate
- torque limiter
- main surface
- disc spring
- power
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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
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
- F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
Definitions
- the present invention relates to a torque limiter and a power transmission device, and more particularly to a torque limiter and a power transmission device mounted on a hybrid vehicle.
- a torque fluctuation absorber disclosed in Japanese Patent Application Laid-Open No. 2005-133859 is integrated with a damper mechanism coupled to an input shaft of a transmission, a flywheel to which driving force from a driving source is transmitted, and a flywheel.
- the damper mechanism includes a disk-shaped disc, a first friction material provided on one side surface of the disc, and a second friction material provided on the other side surface. The first plate contacts the first friction material, and the second plate contacts the second friction material.
- the disc spring biases the second plate against the second friction material.
- the torque fluctuation absorbing device described in Japanese Patent Application Laid-Open No. 2009-293651 also includes a friction member provided on both surfaces of the output-side plate member, a pressure plate in contact with one friction member, and the pressure plate as a friction member. And a disc spring to be pressed.
- the disc spring biases the second plate against the friction material, and the second plate and the second friction material are in contact with each other.
- a torque exceeding a predetermined value is applied to the torque fluctuation absorber, the second plate and the second friction material start to rotate with each other.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a torque limiter and a power transmission device in which occurrence of sticking due to rust or the like is suppressed.
- a torque limiter is mounted in a hybrid vehicle and is provided in a power transmission path through which power from a drive unit is transmitted, and relieves power transmitted when excessive power is applied to the power transmission path.
- the torque limiter includes a first rotating member including a first main surface and a second main surface located on the opposite side of the first main surface, a first region facing the first main surface of the first rotating member, and a first A second rotating member including a second region facing the second main surface of the rotating member, and the first rotating member is provided between the first main surface and the first region, and transmits power from the second rotating member to the first rotating member.
- a urging member provided between the second main surface and the second region. The urging member contacts the second main surface, and urges the first rotating member toward the first region, thereby pressing the transmission member against the first region.
- the contact area between the urging member and the first rotating member is smaller than the contact area between the transmission member and the first region.
- an annular groove is formed on the second main surface, and the end of the biasing member on the second main surface side enters the groove.
- the urging member includes a disc spring body portion formed in a hollow truncated cone shape and a contact piece provided at a tip portion of the disc spring body portion. The contact piece is formed so as to protrude from the tip of the disc spring main body toward the first rotating member.
- an annular sealing member provided on the second main surface is further provided.
- the biasing member is formed in an annular shape, and a space is formed by the sealing member, the second main surface, and the biasing member, and the space is filled with a lubricant.
- the drive unit is an engine.
- the first rotating member and the second rotating member are made of metal.
- the power transmission device according to the present invention includes the torque limiter.
- FIG. 1 is a conceptual diagram showing a drive device (powertrain) of a hybrid vehicle 1 and its control system. It is sectional drawing of the torque limiter which concerns on this Embodiment 1.
- FIG. It is sectional drawing which shows the torque limiter as a comparative example. It is sectional drawing which shows a part of torque limiter which concerns on this Embodiment 2.
- FIG. It is a top view of an output plate. It is sectional drawing which shows a part of torque limiter which concerns on this Embodiment 3.
- FIG. It is a top view of an output plate. It is a perspective view which shows the disc spring provided in the torque limiter which concerns on this Embodiment 4.
- FIG. It is sectional drawing which shows the front-end
- FIG. 10 is a skeleton diagram schematically showing a configuration of a hybrid vehicle 1 according to a fifth embodiment. It is sectional drawing which shows the flywheel with a torque limiter, a motor generator, and an engine disconnecting clutch. It is sectional drawing which shows a part of torque limiter as a comparative example with respect to the torque limiter of Embodiment 5.
- FIG. 1 is a conceptual diagram showing a driving device (power train) of a hybrid vehicle 1 of the FF (front engine-front drive: front wheel driving in front of engine) type and its control system, which is an embodiment of the present invention.
- FF front engine-front drive: front wheel driving in front of engine
- hybrid vehicle 1 includes an engine 2, a power transmission device 9, a power distribution mechanism (reduction gear) 16, a motor generator 11 and a motor generator 12, a driven gear 32, and a final drive pinion gear 33.
- the differential case 34, the drive shaft 36, and the wheel 3 are provided.
- the power from the engine (drive unit) 2 is transmitted to the wheels 3 via the power transmission device 9, the power distribution mechanism 16, the driven gear 32, the final drive pinion gear 33, the differential case 34, the drive shaft 36, and the like sequentially.
- the power transmission device 9, the power distribution mechanism (reduction gear) 16, the motor generator 11 and the motor generator 12, the driven gear 32, the final drive pinion gear 33, and the differential case 34 are accommodated in the casing 13.
- an internal combustion engine specifically, a gasoline engine, a diesel engine, an LPG engine, a methanol engine, a hydrogen engine, or the like can be used.
- the engine 2 includes a crankshaft 7, and the crankshaft 7 rotates when the engine 2 is driven.
- the power transmission device 9 is provided in a power transmission path through which power from the engine 2 is transmitted, and in particular, is provided in a power transmission path located between the engine 2 and the power distribution mechanism 16.
- the power transmission device 9 is a device that interrupts (relaxes) the input torque transmitted when excessive power is applied to the power transmission path.
- the power transmission device 9 includes a flywheel 8 and a torque limiter 10 connected to the flywheel 8.
- the flywheel 8 is fixed to the crankshaft 7 of the engine 2, and the flywheel 8 also rotates as the crankshaft 7 rotates.
- the torque limiter 10 is provided so as to connect the input shaft 4 of the power distribution mechanism 16 and the flywheel 8.
- the torque limiter 10 has a friction material and is a shut-off device against an overload applied to the power distribution mechanism 16, and protects the power distribution mechanism 16 by cutting off (relaxing) the excessively applied input torque.
- the motor generator 11 and the motor generator 12 are provided outside the input shaft 4.
- the motor generator 11 and the motor generator 12 have both a function as an electric motor driven by the supply of electric power and a function (regeneration function) as a generator that converts kinetic energy into electric energy.
- a power storage device (BAT) 56 that supplies electric power to the motor generator 11 and the motor generator 12 is provided.
- a battery or a capacitor can be used as the power storage device 56.
- the motor generator 11 has a stator 14 (not shown) fixed to the casing 13 and a rotatable rotor 15.
- a power distribution mechanism 16 is provided outside the input shaft 4 and between the motor generator 11 and the motor generator 12.
- the power distribution mechanism 16 is constituted by a so-called single pinion type planetary gear mechanism.
- the power distribution mechanism 16 has a sun gear 17, a ring gear 18 disposed concentrically with the sun gear 17, and a carrier 20 holding a pinion gear 19 that meshes with the sun gear 17 and the ring gear 18.
- the sun gear 17 and the rotor 15 are connected so as to rotate integrally, and the carrier 20 and the input shaft 4 are connected so as to rotate integrally.
- the ring gear 18 is formed on the inner peripheral side of the annular member 21.
- a gear 22 and a parking gear 23 are formed on the outer periphery of the annular member 21, and a ring gear 24 different from the ring gear 18 is formed on the inner periphery of the annular member 21.
- a parking ball 25 that can be engaged with the parking gear 23 and can be detached from the parking gear 23 is provided in the casing 13.
- a planetary gear 26 is provided outside the input shaft 4.
- the planetary gear 26 includes a sun gear 27, a ring gear 24, and a carrier 29 that holds the pinion gear 28 meshed with the sun gear 27 and the ring gear 24.
- the motor generator 12 has a stator 30 (not shown) fixed to the casing 13 and a rotatable rotor 31.
- the sun gear 27 and the rotor 31 are connected so as to rotate integrally.
- the engine 2 and the motor generator 12 are arranged in parallel with each other with respect to the annular member 21 connected to the wheel 3.
- the carrier 29 is fixed to the casing 13. Specifically, the carrier 29 is prevented from rotating by a connecting portion 39 between the carrier 29 and the casing 13.
- the connecting portion 39 has a convex portion (not shown) protruding in the radial direction and a concave portion (not shown) in which the convex portion is disposed.
- the input shaft 4 and the output shaft 5 are arranged in parallel to each other, and a driven gear 32 and a final drive pinion gear 33 are formed on the output shaft 5.
- the gear 22 and the driven gear 32 are meshed with each other.
- the differential gear 6 is held by a differential case 34 that can be rotated about a rotational axis parallel to a rotational axis (not shown) of the output shaft 5, a ring gear 35 formed on the outer periphery of the differential case 34, and the differential case 34.
- the ring gear 35 and the final drive pinion gear 33 are fitted.
- a drive shaft 36 is connected to the side gear, and the wheel 3 is connected to the drive shaft 36. Further, a vehicle speed sensor 37 that detects the number of rotations of the wheel 3 is provided in the vicinity of the drive shaft 36.
- the electronic control unit 50 is composed of a processing unit (CPU or MPU), a storage unit (RAM and ROM), and a microcomputer mainly including an input / output interface. It is configured.
- the electronic control device 50 includes a signal from the vehicle speed sensor 37, a signal from the charge amount sensor of the power storage device 56, a signal from the engine speed sensor, a signal from the acceleration request sensor, a signal from the braking request sensor, and a signal from the shift position sensor.
- FIG. 1 exemplifies the vehicle speed SP from the vehicle speed sensor 37, the engine speed NE from the engine speed sensor, and the state of charge value SOC from the charge amount sensor of the power storage device 56 as some of these signals. .
- the electronic control device 50 outputs a signal for controlling the engine 2, a signal for controlling the motor generator 11 and the motor generator 12, and the like.
- FIG. 1 exemplifies a torque target value Tr1 of the motor generator 11, a torque target value Tr2 of the motor generator 12, and an engine speed target value Nref of the engine 2 as a part of these signals.
- Torque target values Tr1 and Tr2 are realized by a PCU (Power Control Unit) 55 including a power converter for converting DC power supplied from the power storage device 56 into driving power for the motor generator 11 and the motor generator 12. AC power is supplied to the motor generator 11 and the motor generator 12.
- PCU Power Control Unit
- hybrid vehicle 1 configured as described above, engine 2, motor generator 11, and motor generator 12 are controlled based on a signal input to electronic control device 50 and data stored in electronic control device 50. .
- the motor generator 11 when the engine 2 is started, the motor generator 11 is operated as an electric motor. Then, the ring gear 18 of the power distribution mechanism 16 becomes a reaction force element, and the torque of the motor generator 11 is transmitted to the engine 2 via the carrier 20 and the input shaft 4 so that the engine 2 is cranked.
- the engine 2 is cranked and the fuel is combusted so that the engine 2 can rotate autonomously.
- the torque of the engine 2 is transmitted to the gear 22 via the input shaft 4, the carrier 20, and the ring gear 18.
- the torque of the gear 22 is transmitted to the wheel 3 via the output shaft 5 and the differential gear 6 to generate a driving force.
- the hybrid vehicle 1 shown in FIG. 1 can travel by using at least one of the engine 2 and the motor generator 12 as a driving force source and transmitting the torque to the wheels 3.
- the kinetic energy of the hybrid vehicle 1 is transmitted to the motor generator 12 via the differential gear 6, the output shaft 5, and the gear 22, and the motor generator 12 is caused to function as a generator. It is also possible to charge the power storage device 56 with the generated power.
- FIG. 2 is a cross-sectional view of the torque limiter 10 according to the present embodiment.
- the torque limiter 10 includes a sleeve 4 a that is spline-fitted to the input shaft 4, and an output including a main surface 61 and a main surface 62 that is formed so as to protrude from the peripheral surface of the sleeve 4 a.
- a disc spring (biasing member) 65 The sleeve 4 a is spline-fitted to the input shaft 4.
- the output plate 60 is formed in a plate shape, and the main surface 61 and the main surface 62 are disposed so as to face each other.
- the output plate 60 is typically formed in a disc shape, but various shapes can be adopted as the shape of the output plate 60.
- the friction material 64 is fixed to the main surface 61 and is formed in an annular shape around the center line of the input shaft 4.
- the friction material 64 is made of, for example, resin.
- the disc spring 65 has a hollow truncated cone shape on the input shaft 4.
- the center line of the disc spring 65 is also arranged so as to coincide with the center line of the input shaft 4.
- the input plate 63 includes a counter plate (first region) 66 arranged to face the main surface 61 and a counter plate 67 arranged to face the main surface 62.
- the counter plate 66 and the counter plate 67 are mutually connected by a rivet (fixing member) 68.
- the input plate 63 is disposed so as to cover the outer peripheral edge of the output plate 60.
- the disc spring 65 is disposed between the main surface 62 of the output plate 60 and the opposing plate 67.
- the disc spring 65 presses the output plate 60 toward the counter plate 66, and the friction material 64 is pressed against the counter plate 66.
- the sleeve 4a is spline-fitted to the input shaft 4.
- the torque limiter 10 is mounted on a so-called hybrid vehicle, and the power of the motor generators 12 and 11 and the engine 2 is applied to the power distribution mechanism 16.
- the torque limiter 10 slips between the friction material 64 and the opposed plate 66, and the power transmitted from the opposed plate 66 to the output plate 60 is cut off. (Relaxed).
- the disc spring 65 is fixed to the counter plate 67. When slip occurs between the friction material 64 and the counter plate 66, slip also occurs between the disc spring 65 and the output plate 60.
- the threshold for driving the torque limiter 10 is set to be larger than the maximum output of the engine 2. For example, when the hybrid vehicle 1 travels on a wavy road and the input shaft 4 resonates, the torque limiter 10 is driven. Thus, the torque limiter 10 is not driven during normal travel, and there are few cases where the torque limiter 10 is driven. Even when the torque limiter 10 mounted on the hybrid vehicle is driven, the output plate 60 and the friction material 64 are only slightly rotated relative to the disc spring 65 and the input plate 63. Since the rotation amount of the output plate 60 rotating relative to the disc spring 65 is small, the disc spring 65 is hardly worn even if the disc spring 65 is brought into direct contact with the output plate 60.
- FIG. 3 is a cross-sectional view showing a torque limiter 10A as a comparative example.
- the torque limiter 10 ⁇ / b> A shown in FIG. 3 includes an input plate 63 including a counter plate 66 and a counter plate 67, and an output plate 60, similarly to the torque limiter 10 according to the first embodiment.
- the torque limiter 10 ⁇ / b> A includes a friction material 75 provided on the main surface 62 of the output plate 60, a friction material 64 provided on the main surface 61 of the output plate 60, and a disc spring 65 fixed to the counter plate 67.
- a pressing member 74 that is coupled to the counter plate 67 and pressed toward the friction material 75 by the disc spring 65.
- the members In the path where power is transmitted from the input plate 63 to the output plate 60, the members can move relative to each other at the contact portion of the friction material 64 and the counter plate 66 and the contact portion of the pressing member 74 and the friction material 75. Are in contact with each other. For this reason, if rust occurs in the contact portion between the friction material 64 and the counter plate 66 and the contact portion between the pressing member 74 and the friction material 75, the members are fixed to each other, and the threshold value at which the torque limiter 10A is activated increases.
- the members move relative to each other in the contact portion between the friction material 64 and the counter plate 66 and the contact portion between the disc spring 65 and the output plate 60. Contact is possible.
- the torque limiter 10 according to the first embodiment and the torque limiter 10A of the comparative example are common in that the friction material 64 and the counter plate 66 are in contact with each other.
- the output plate 60 and the disc spring 65 are in line contact
- the pressing member 74 and the friction material 75 are in surface contact. ing.
- the area where the members are in contact with each other so that they can move relative to each other is smaller in the torque limiter 10 than in the torque limiter 10A.
- the torque limiter 10A Since the fixing force due to rust increases as the area where the members come into contact with each other, even if rust occurs in the torque limiter 10 and the torque limiter 10A, the torque limiter 10A has the same fixing force due to rust. Smaller than.
- the fixing force generated between the output plate 60 and the disc spring 65 of the first embodiment is greater than the fixing force generated between the pressing member 74 and the friction material 75 of the comparative example. Becomes smaller.
- the torque limiter 10 even if rust is generated at each contact portion, it is possible to suppress the threshold value for starting the torque limiter 10 from becoming too large. Accordingly, when a torque exceeding a predetermined value is applied to the torque limiter 10, it is possible to suppress the disc spring 65 and the output plate 60 from slipping and transmitting a large input torque to the power distribution mechanism 16.
- the torque limiter 10 does not include the friction material 75 and the pressing member 74, and the number of parts is reduced.
- the contact area between the friction material 64 and the counter plate 66 is larger than the contact area between the disc spring 65 and the output plate 60, it is possible to suppress the surface pressure applied to the friction material 64 from being excessive, and the friction The progress of wear of the material 64 can be suppressed.
- the contact portion between the disc spring 65 and the output plate 60 and the central portion in the width direction of the inner and outer peripheral edges of the friction material 64 are arranged in the axial direction of the input shaft 4. Further, since the center line of the friction material 64 and the center line of the disc spring 65 coincide with the rotation center line of the input shaft 4, the pressing force from the disc spring 65 is distributed substantially uniformly throughout the friction material 64. The side surfaces of the friction material 64 contact the counter plate 66 evenly. As a result, a substantially uniform surface pressure is applied to the contact portion between the friction material 64 and the counter plate 66, and the friction material 64 is prevented from being locally worn.
- the output plate 60 is made of a metal material that is harder than the disc spring 65. For this reason, it is possible to suppress a portion of the main surface 62 that comes into contact with the disc spring 65 from being worn and forming a recess or groove due to wear on the main surface 62.
- the limiter torque can be prevented from fluctuating due to fixation, and the number of parts can be reduced as compared with the conventional torque limiter. .
- FIGS. 4 and 5 The torque limiter 10 according to the second embodiment will be described with reference to FIGS. 4 and 5. Of the configurations shown in FIGS. 4 and 5, configurations that are the same as or correspond to the configurations shown in FIGS. 1 and 2 may be assigned the same reference numerals and explanation thereof may be omitted.
- the torque limiter 10 according to the second embodiment is also mounted on the hybrid vehicle 1 as shown in FIG.
- the main surface 62 of the output plate 60 is formed with a groove portion 69 extending in an annular shape around the input shaft 4, and the tip of the disc spring 65 on the output plate 60 side is formed in the groove portion 69. Department is accepted.
- the disc spring 65 is in contact with the surface of the output plate 60 that defines the groove 69 and presses the surface.
- the central portion of the contact portion of the surface of the output plate 60 that defines the tip of the disc spring 65 and the groove 69 and the central portion O between the outer peripheral edge and the inner peripheral edge of the friction material 64 are in the axial direction of the input shaft 4. Are arranged.
- the relative positional relationship between the disc spring 65 and the friction material 64 can also be accurately positioned. Thereby, it can suppress that the friction material 64 contacts the opposing plate 66 equally, and the friction material 64 wears out locally.
- the torque limiter 10 further includes a sealing member 72 provided on the main surface 62 of the output plate 60 and formed in an annular shape as shown in FIG.
- a sealing member 72 for example, an O-ring or the like is employed.
- An annularly extending space 73 is formed by the sealing member 72, the tip of the disc spring 65, and the main surface 62 of the output plate 60.
- the tip of the disc spring 65 is in contact with the main surface 62 of the output plate 60.
- the tip surface of the disc spring 65 is formed so as to be separated from the main surface 62 toward the input shaft 4 from a contact position with the main surface 62.
- the sealing member 72 is fitted into an annular corner defined by the tip surface of the disc spring 65 and the main surface 62. Thereby, a space 73 extending in an annular shape is formed by the sealing member 72, the main surface 62, and the tip surface of the disc spring 65.
- This space 73 is filled with a lubricant 71 such as grease.
- a lubricant 71 such as grease.
- FIG. 8 is a perspective view showing a disc spring 65 provided in the torque limiter 10 according to the fourth embodiment.
- the disc spring 65 includes a disc spring main body 81 formed in a hollow truncated cone shape and a contact piece 80 formed at the tip of the disc spring main body 81.
- a circular opening is formed at the tip of the disc spring body 81, and the contact piece 80 is formed at the opening edge of the disc spring body 81.
- FIG. 9 is a cross-sectional view showing the tip of the disc spring 65 and a part of the output plate 60. As shown in FIG. 9, the contact piece 80 is formed so as to protrude from the opening edge of the disc spring main body 81 toward the radially inner side of the disc spring 65.
- the contact piece 80 has a base 83 on the outer peripheral side connected to the tip of the disc spring main body 81.
- the tip 84 of the contact piece 80 located on the inner peripheral side is in contact with the main surface 62 of the output plate 60.
- the distal end portion 84 is formed so as to protrude to the output plate 60 side from the root portion 83, and the distal end portion 84 and the output plate 60 can be brought into contact with each other when the torque limiter 10 is assembled.
- the contact piece 80 includes a curved portion 82 formed in a curved surface shape, and the curved portion 82 is formed so as to be farthest from the output plate 60 in the central portion between the root portion 83 and the distal end portion 84. Yes.
- a space in which oil can enter is formed by the curved portion 82 and the main surface 62 of the output plate 60.
- the oil is stored at the bottom of the casing 13 shown in FIG. 1, and is pumped up by a gear or the like. The pumped up oil enters between the curved portion 82 and the output plate 60.
- the contact piece 80 is formed to be cantilevered with respect to the disc spring main body 81.
- the contact piece 80 bends, and at least the tip 84 contacts the output plate 60.
- FIGS. 10 to 12 A fifth embodiment applied to a parallel hybrid vehicle will be described with reference to FIGS. 10 to 12.
- the same or corresponding components as those shown in FIGS. 1 to 9 may be denoted by the same reference numerals and description thereof may be omitted.
- FIG. 10 is a skeleton diagram schematically showing the configuration of the hybrid vehicle 1 according to the fifth embodiment.
- the hybrid vehicle 1 includes an engine 40, a flywheel with a torque limiter (power transmission device) 42 connected to the crankshaft 41 of the engine 40, and one end connected to the flywheel 42 with a torque limiter.
- the flywheel shaft 43 and the engine disconnecting clutch 44 connected to the other end of the flywheel shaft 43 are provided.
- the hybrid vehicle 1 includes a motor generator 45 connected to the engine disconnecting clutch 44 and the main shaft 48, a transmission 49, and a forward / reverse switching mechanism 50 provided at the end of the main shaft 48.
- the hybrid vehicle 1 includes a counter shaft 53 connected to the driven pulley 52 of the transmission 49, a forward clutch 54 provided on the counter shaft 53, a first reduction gear 55 connected to the forward clutch 54, and a first reduction.
- a reduction shaft 56 provided with a second reduction gear 57 that meshes with the gear 55, a final drive gear 58 provided on the reduction shaft 56, a differential gear 91 provided with a final driven gear 90 that meshes with the final drive gear 58, And a drive shaft 92 connected to the differential gear 91.
- the motor generator 45 includes a stator 46 and a rotor 47, and the rotor 47 is connected to the engine disconnect clutch 44 and the main shaft 48.
- the transmission 49 includes a drive pulley 51, a driven pulley 52, and a metal belt that connects the drive pulley 51 and the driven pulley 52.
- the drive pulley 51 is fixed to the outer peripheral surface of a sleeve 51 a provided on the outer peripheral surface of the main shaft 48.
- the sleeve 51 a is provided to be rotatable with respect to the main shaft 48.
- the drive pulley 51 is connected to the forward / reverse switching mechanism 50.
- the forward / reverse switching mechanism 50 rotates the drive pulley 51 in the forward rotation direction with respect to the rotation direction of the main shaft 48 or rotates the drive pulley 51 in the reverse rotation direction with respect to the rotation direction of the main shaft 48.
- the forward clutch 54 is a wet multi-plate type clutch, and connects the first reduction gear 55 and the counter shaft 53, or releases the connection between the first reduction gear 55 and the counter shaft 53.
- the power from the engine 40 includes a crankshaft 41, a flywheel 42 with a torque limiter, a flywheel shaft 43, a motor generator 45, a main shaft 48, a forward / reverse switching mechanism 50, a transmission 49, a countershaft. 53, a forward clutch 54, a first reduction gear 55, a second reduction gear 57, a final drive gear 58, a final driven gear 90, a differential gear 91, and a drive shaft 92, in order, to drive wheels Is transmitted to.
- the engine disconnecting clutch 44 is connected to improve energy recovery efficiency.
- the forward / reverse switching mechanism 50 includes a sun gear 93 that is fixed to the carrier 20, a planetary carrier 94 that is rotatably provided with respect to the main shaft 48, and a planetary carrier 94 that is rotatably provided with the sun gear 93.
- a plurality of pinion gears 95 that mesh with each other and a ring gear 96 that meshes with the pinion gears 95 are provided.
- the forward / reverse switching mechanism 50 is provided between the reverse clutch 97 provided between the case and the planetary carrier 94, the clutch guide 100 connecting the sleeve 51a and the ring gear 96, and the clutch guide 100 and the sun gear 93.
- the forward clutch 99 is provided.
- FIG. 11 is a cross-sectional view showing a flywheel 42 with a torque limiter, a motor generator 45, and an engine disconnecting clutch 44.
- the flywheel shaft 43 is provided with a closing member 101 through a ball bearing.
- the closing member 101 is fixed to the rotor 47 with bolts.
- the engine disconnecting clutch 44 is formed at an end portion of the flywheel shaft 43 and is formed so as to project outward in the radial direction, and a clutch disc 103 fitted into the outer peripheral surface of the clutch hub 102. And a plurality of clutch plates 104 fitted on the inner peripheral surface of the rotor 47, a hydraulic mechanism 105, and an elastic member 106.
- the engine disconnecting clutch 44 is always engaged by the biasing force of the elastic member 106.
- the rotor 47 rotates, and the rotational force of the rotor 47 sequentially passes through the engine disconnecting clutch 44, the flywheel shaft 43, the flywheel 42 with the torque limiter, and the crankshaft 41, Is transmitted to.
- the flywheel with torque limiter 42 includes a drive plate 110 fixed to the end of the crankshaft 41, a mass 111 fixed to the outer peripheral edge of the drive plate 110, a torque limiter 112, and a damper 113.
- the torque limiter 112 includes an input plate 63 fixed to the drive plate 110, an output plate 60, a friction material 64, and a disc spring 65 together with the mass 111 by bolts 114.
- the input plate 63 includes a counter plate 66 and a counter plate 67.
- the opposing plate 66 and the opposing plate 67 are formed so that the interval between them is larger on the radially inner side than the bolt 114.
- the disc spring 65, a part of the output plate 60, and the friction material 64 are disposed between the opposing plate 66 and the opposing plate 67.
- the disc spring 65 is disposed between the opposed plate 67 and the output plate 60, and the friction material 64 is disposed between the output plate 60 and the opposed plate 66.
- the disc spring 65 is fixed to the counter plate 67, and the inner end portion of the disc spring 65 is in direct contact with the output plate 60.
- the friction material 64 is fixed to the plate 60b.
- the output plate 60 includes a plate 60a and a plate 60b, and the plate 60a and the plate 60b are fixed by a fixing member 115.
- the disc spring 65 presses the output plate 60 (plate 60 a) toward the counter plate 66, and the friction material 64 is in contact with the counter plate 66.
- the plate 60a and the plate 60b are formed so as to be spaced apart from each other on the radially inner side with respect to the fixing member 115.
- the plate 60a and the plate 60b are accommodated in a radially inner side with respect to the fixing member 115 so as to accommodate a spring described later.
- a portion 116 is formed.
- the damper 113 includes a sleeve 120 that is spline-fitted to the flywheel shaft 43, a second output plate 117 that is fixed to the peripheral surface of the sleeve 120, a receiving hole 118 that is formed in the second output plate 117, and a receiving hole A spring 119 disposed in 118 and the output plate 60 are provided.
- the plate 60 a and the plate 60 b are formed with a window portion (not shown), and the spring 119 is engaged with the inner peripheral edge portion of the window portion and also with the inner peripheral surface of the accommodation hole 118.
- the power from the engine is transmitted to the flywheel shaft 43 via the crankshaft 41, the opposing plate 66, the friction material 64, the output plate 60, the spring 119, the second output plate 117, and the sleeve 120.
- the output plate 60 and the second output plate 117 are provided so as to rotate relative to each other, and the spring 119 suppresses fluctuations in torque transmitted from the output plate 60 to the second output plate 117.
- the disc spring 65 and the output plate 60 are in contact with each other in the path in which power is transmitted from the input plate 63 to the output plate 60, and the output plate 60 and the disc spring 65 are in contact with each other. In contact.
- FIG. 12 is a sectional view showing a part of a torque limiter 112A as a comparative example with respect to the torque limiter 112 of the fifth embodiment.
- the torque limiter 112A includes a friction material 64 fixed to the plate 60b, a friction material 122 fixed to the plate 60a, a disc spring 65 fixed to the counter plate 66, A pressing plate 121 that is pressed by a spring 65 and contacts the friction material 122 is provided.
- the pressing plate 121 is connected to the counter plate 66.
- the friction material 64 is pressed against the counter plate 67 by the pressing force from the disc spring 65.
- the pressing plate 121 and the friction material 122 are in contact with each other so as to be able to move relative to each other.
- the plates 67 are also in contact with each other so as to be able to move relative to each other.
- the disc spring 65 and the plate 60a are in direct contact with each other.
- the torque limiter 112 In the path where power is transmitted from the input plate 63 to the output plate 60, the area where the members are in contact with each other in a state where they can move relative to each other is compared with the torque limiter 112 according to the fifth embodiment. It is smaller than the torque limiter 112A of the example.
- the fixing force generated in the torque limiter 112 according to the fifth embodiment is suppressed to be smaller than the fixing force generated in the torque limiter 112A of the comparative example, and the torque limiter 112 according to the fifth embodiment Accordingly, even when rust is generated, it is possible to prevent the threshold at which the torque limiter 112 starts from becoming too large.
- the present invention can be applied to a torque limiter and a power transmission device, and is particularly suitable for a torque limiter and a power transmission device mounted on a hybrid vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
図1は、この発明の一実施例である、FF(フロントエンジン-フロントドライブ:エンジン前置き前輪駆動)形式のハイブリッド車両1の駆動装置(パワートレイン)およびその制御系統を示す概念図である。
図4および図5を用いて、本実施の形態2に係るトルクリミッタ10について説明する。なお、図4および図5に示す構成のうち、上記図1および図2に示す構成と同一または相当する構成については同一の符号を付してその説明を省略する場合がある。なお、本実施の形態2に係るトルクリミッタ10も、上記図1に示すようなハイブリッド車両1に搭載される。
図6および図7を用いて、本実施の形態3に係るトルクリミッタ10について説明する。なお、図6および図7に示す構成のうち、上記図1から図5に示す構成と同一または相当する構成については、同一の符号を付してその説明を省略する場合がある。
図8および図9を用いて、本実施の形態4に係るトルクリミッタ10について説明する。なお、図8および図9に示す構成のうち、上記図1から図7に示す構成と同一または相当する構成については、同一の符号を付してその説明を省略する場合がある。
図10から図12を用いて、パラレル方式のハイブリッド車両に適用した実施の形態5について説明する。なお、図10から図12に示す構成のうち、上記図1から図9に示す構成と同一または相当する構成については、同一の符号を付してその説明を省略する場合がある。
Claims (5)
- ハイブリッド車両(1)に搭載され、駆動部からの動力が伝達される動力伝達経路内に設けられ、前記動力伝達経路に過大な動力が加えられたときに伝達する動力を緩和するトルクリミッタであって、
第1主表面(61)、および前記第1主表面と反対側に位置する第2主表面(62)を含む第1回転部材(60)と、
前記第1回転部材の前記第1主表面と対向する第1領域(66)および前記第1回転部材の前記第2主表面と対向する第2領域(67)を含む第2回転部材(63)と、
前記第1主表面および前記第1領域の間に設けられ、前記第2回転部材から前記第1回転部材に動力を伝達することが可能な伝達部材(64)と、
前記第2主表面と前記第2領域との間に設けられた付勢部材(65)とを備え、
前記付勢部材は、前記第2主表面と接触し、前記第1回転部材を前記第1領域に向けて付勢することで、前記伝達部材を前記第1領域に押圧し、
前記付勢部材と前記第1回転部材との接触面積は、前記伝達部材と前記第1領域との接触面積よりも小さい、トルクリミッタ。 - 前記第2主表面に環状の溝部(69)が形成され、前記付勢部材の前記第2主表面側の端部が前記溝部内に入り込む、請求の範囲第1項に記載のトルクリミッタ。
- 前記付勢部材は中空の円錐台形状に形成された皿バネ本体部(81)と、前記皿バネ本体部の先端部に設けられた接触片(80)とを含み、
前記接触片は、前記皿バネ本体部の先端部より前記第1回転部材側に突出するように形成された、請求の範囲第1項に記載のトルクリミッタ。 - 前記第2主表面に設けられた環状の封止部材(72)をさらに備え、
前記付勢部材は環状に形成され、
前記封止部材と前記第2主表面と前記付勢部材とによって空間が形成され、
前記空間内に潤滑材(71)が充填された、請求の範囲第1項に記載のトルクリミッタ。 - 請求の範囲第1項に記載のトルクリミッタを備えた、動力伝達装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2010/057046 WO2011132270A1 (ja) | 2010-04-21 | 2010-04-21 | トルクリミッタおよび動力伝達装置 |
JP2012511446A JP5316704B2 (ja) | 2010-04-21 | 2010-04-21 | トルクリミッタおよび動力伝達装置 |
DE112010005512T DE112010005512T5 (de) | 2010-04-21 | 2010-04-21 | Momentbegrenzer und Leistungsübertragungsgerät |
US13/637,378 US8814708B2 (en) | 2010-04-21 | 2010-04-21 | Torque limiter and power transmission device |
Applications Claiming Priority (1)
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PCT/JP2010/057046 WO2011132270A1 (ja) | 2010-04-21 | 2010-04-21 | トルクリミッタおよび動力伝達装置 |
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WO2011132270A1 true WO2011132270A1 (ja) | 2011-10-27 |
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US (1) | US8814708B2 (ja) |
JP (1) | JP5316704B2 (ja) |
DE (1) | DE112010005512T5 (ja) |
WO (1) | WO2011132270A1 (ja) |
Cited By (2)
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---|---|---|---|---|
DE102012009953A1 (de) | 2011-11-22 | 2013-05-23 | Volkswagen Aktiengesellschaft | Kraftfahrzeug |
WO2020084154A3 (en) * | 2018-10-25 | 2020-06-04 | Valeo Otomotiv Sanayi Ve Ticaret A.S. | A torque limiter with a load device |
Families Citing this family (4)
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EP3736319A1 (en) | 2014-02-07 | 2020-11-11 | GOJO Industries, Inc. | Compositions and methods with efficacy against spores and other organisms |
US10563723B2 (en) * | 2016-03-16 | 2020-02-18 | Schaeffler Technologies AG & Co. KG | Integrated slip clutch with drive plate for dry damper applications |
CN107642563A (zh) * | 2016-07-22 | 2018-01-30 | 株洲时代新材料科技股份有限公司 | 一种扭矩限制器 |
FR3130340B1 (fr) * | 2021-12-13 | 2024-02-09 | Valeo Embrayages | Dispositif d’amortissement d’oscillations de torsion |
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- 2010-04-21 JP JP2012511446A patent/JP5316704B2/ja not_active Expired - Fee Related
- 2010-04-21 WO PCT/JP2010/057046 patent/WO2011132270A1/ja active Application Filing
- 2010-04-21 US US13/637,378 patent/US8814708B2/en not_active Expired - Fee Related
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Also Published As
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JPWO2011132270A1 (ja) | 2013-07-18 |
US20130015031A1 (en) | 2013-01-17 |
JP5316704B2 (ja) | 2013-10-16 |
DE112010005512T5 (de) | 2013-02-07 |
US8814708B2 (en) | 2014-08-26 |
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