Vehicle drive device
First Claim
Patent Images
1. A vehicle drive device comprising:
- a motor including a rotating member; and
a hydraulic transmission provided adjacent the motor in a direction of a rotational center axis and having a shell housing a fluid, the hydraulic transmission including a first rotating member and a second rotating member, the first rotating member extending axially in one direction to said shell, integrally coupled to said shell and said rotating member of said motor and rotatably supported by a bearing member while an axial movement of said first rotating member is prohibited, the second rotating member extending axially to said shell and in a direction opposite to the one direction of said first rotating member, integrally coupled to said shell and rotatably supported by a bearing member while an axial movement of said second rotating member is allowed.
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Accused Products
Abstract
A vehicle drive device is provided having a first source of driving force and a hydraulic transmission, into which power is input from the first source of driving force, arranged axially. A motor that transmits power by an electromagnetic action between a stator and a rotor is arranged between the first source of driving force and the hydraulic transmission. The stator is arranged to be radially distant from the rotational center axis of the hydraulic transmission. A small diameter portion formed to have a smaller outer diameter than an inner diameter of the stator is formed at a motor side of the hydraulic transmission and the hydraulic transmission is arranged with the small diameter portion being inserted axially into the inner periphery of the stator. As a result, the axial length of the vehicle drive device is shortened to thereby provide a small-size, lightweight device.
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Citations
31 Claims
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1. A vehicle drive device comprising:
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a motor including a rotating member; and
a hydraulic transmission provided adjacent the motor in a direction of a rotational center axis and having a shell housing a fluid, the hydraulic transmission including a first rotating member and a second rotating member, the first rotating member extending axially in one direction to said shell, integrally coupled to said shell and said rotating member of said motor and rotatably supported by a bearing member while an axial movement of said first rotating member is prohibited, the second rotating member extending axially to said shell and in a direction opposite to the one direction of said first rotating member, integrally coupled to said shell and rotatably supported by a bearing member while an axial movement of said second rotating member is allowed. - View Dependent Claims (2, 3, 4)
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5. A vehicle drive device comprising:
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a first housing having an inner peripheral surface;
a barrier plate portion protruding radially inward from said inner peripheral surface of said first housing;
a second housing to which said first housing is attached;
a motor having a stator fixed onto an inner peripheral surface of said first housing and a rotor relatively rotating with said stator;
a functional device fixed to said second housing;
a hydraulic transmission provided inside of the second housing and adjacent the motor in a direction of a rotational center axis, the hydraulic transmission having a first rotating member, a second rotating member and a shell housing a fluid, the first rotating member extending axially in one direction to said shell, integrally coupled to said shell and said rotating member of said motor and rotatably supported by a bearing member fixed at inner peripheral side of the barrier plate portion while an axial movement of said first rotating member is prohibited, the second rotating member extending axially to said shell and in a direction opposite to the one direction of said first rotating member, integrally coupled to said shell and rotatably supported by the function device while an axial movement of said second rotating member is allowed. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A vehicle drive device comprising:
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a first housing having an inner peripheral surface;
a barrier plate portion protruding radially inward from said inner peripheral surface of said first housing;
a second housing to which said first housing is attached;
a functional device fixed to said second housing;
a motor having a stator fixed onto an inner peripheral surface of said first housing and a rotor relatively rotating with said stator;
a hydraulic transmission provided inside of said second housing and adjacent said motor in a direction of a rotational center axis, said hydraulic transmission having a shell housing a fluid; and
shaft members integral with said rotor, said shaft members being rotatably supported by a bearing member attached to an inner peripheral portion of said barrier plate portion and rotatably supported by said functional device, wherein said stator of said motor and said hydraulic transmission are arranged to at least partially radially overlap. - View Dependent Claims (13, 14)
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15. A vehicle drive device comprising:
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a first source of driving force that generates power;
a motor arranged on the rotational center axis of the first source of driving force, the motor including a stator arranged to be radially distant from the rotational center axis and a rotor relatively rotating with said stator; and
a hydraulic transmission having a small diameter portion formed to have a smaller outer diameter than an inner diameter of said stator, the small diameter portion being inserted axially into an inner periphery of said stator, and into which power is transmitted from the first source of driving force, wherein the stator of the motor and a portion of the hydraulic transmission radially overlap. - View Dependent Claims (16, 17)
an input side member;
an output side member; and
a clutch radially arranged inside said small diameter portion and directly coupling said input side member and said-output side member.
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17. The vehicle drive device according to claim 15, wherein the hydraulic transmission is a torque converter.
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18. A vehicle drive device comprising:
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a first source of driving force that generates power, and has an output member;
a hydraulic transmission into which power is transmitted from said first source of driving force;
a motor arranged between said first source of driving force and the hydraulic transmission, said motor including a stator arranged to be radially distant from a rotational center axis of the motor and a rotor relatively rotating with said stator; and
a damper coupled to the output member of the first source of driving force, said damper being arranged to extend axially into an inner periphery of said stator and damping the power transmitted from said first source of driving forces, wherein the stator of the motor and a portion of the hydraulic transmission are arranged to radially overlap. - View Dependent Claims (19, 20)
a barrier plate portion arranged between said stator and said rotor, and a member arranged on a side of said first source of driving force in the axial direction with respect to the stator and the rotor.
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20. The vehicle drive device according to claim 18, wherein the hydraulic transmission is a torque converter.
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21. A vehicle drive device comprising:
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a first source of driving force that generates power;
a hydraulic transmission into which power is transmitted from said first source of driving force;
a motor arranged between said first source of driving force and said hydraulic transmission and including a stator arranged to be radially distant from a rotational center axis and a rotor relatively rotating with said stator; and
a detector arranged on a side of an inner periphery of said stator that detects relative rotational positions of said stator and said rotor. - View Dependent Claims (22, 23, 24)
a barrier plate portion arranged between said stator and said rotor, and a member arranged on a side of said first source of driving force in the axial direction with respect to the stator and the rotor.
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23. The vehicle drive device according to claim 21, wherein said detector comprises a detector stator and a detector rotor, the device further comprising a barrier plate portion arranged between said detector and the stator and the rotor of said motor,
wherein the detector stator is attached onto a side surface of said barrier plate portion facing said first source of driving force, and said detector rotor and the rotor of the motor are attached to a rotating shaft passing through said barrier plate portion. -
24. The vehicle drive device according to claim 21, wherein the hydraulic transmission is a torque converter.
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25. A vehicle drive device comprising:
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a first source of driving force that generates power;
a hydraulic transmission into which the power is transmitted from said first source of driving force;
an input shaft arranged along a rotational center axis of said hydraulic transmission and coupled to said hydraulic transmission;
a motor arranged between said first source of driving force and said hydraulic transmission and including a stator arranged to be radially distant from the rotational center axis and a rotor attached to the radially extending portion of said input shaft;
a barrier plate portion that extends radially outward from the center axis to separate said first source of driving force and said motor, said barrier plate portion including a through hole passing through said input shaft; and
a detector that detects relative rotations of said stator and said rotor in a rotation direction, said detector including a detector rotor attached to the radially extending portion of said input shaft to axially extend into an inner periphery of the rotor of said motor, and a detector stator fixed onto an inner wall surface of said barrier plate portion and radially facing said detector rotor. - View Dependent Claims (26)
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27. A vehicle drive device comprising:
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a first source of driving force that generates power;
a second source of driving force that has a rotational member;
a rotating input member to which the power is transmitted from said first source of driving force, said rotating input member having a hub portion provided with a radially-protruding plate-shape portion; and
a hydraulic transmission, into which the power is transmitted from said first source of driving force, said hydraulic transmission including a shell housing a fluid, wherein part of said shell of said hydraulic transmission is formed by a front cover having an opening portion formed at a rotational center axis, the front cover being integrally fixed to the hub portion and the hub portion forming the part of said shell by fitting the plate-shape portion of said hub portion into the opening portion of the front cover, the rotational member of said second source of driving force is integrally attached to a portion of the hub portion positioned outside of said shell, and the second source and a portion of the hydraulic transmission radially overlap. - View Dependent Claims (28, 29)
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30. A vehicle drive device, comprising:
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a first source of driving force that generates power, and has an output member;
a second source of driving force that has a rotational member;
a damper mechanism having an output side member and an input side member attached to the output member of said first source of driving force; and
a hydraulic transmission having an input shaft coupled through a spline to the output side member of said damper mechanism and a shell which houses a fluid and is attached to the input shaft and, the rotational member of said second source of driving force being coupled through the input shaft to part of the shell, wherein the second source and a portion of the hydraulic transmission radially overlap. - View Dependent Claims (31)
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Specification
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Current AssigneeToyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
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Original AssigneeToyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
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InventorsTabata, Atsushi, Ibaraki, Ryuji, Nagano, Shuji, Taga, Yutaka, Nakamura, Seiji, Amano, Masaya
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Primary Examiner(s)Marmor, Charles A.
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Assistant Examiner(s)Lewis, Tisha D.
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Application NumberUS09/389,755Time in Patent Office868 DaysField of Search475/5, 475/1, 477/2, 477/3, 477/5, 477/6, 180/65-- 6, 192/48.92, 290/4.C, 290/47, 290/46US Class Current475/5CPC Class CodesB60K 6/26 characterised by the motors...B60K 6/38 characterised by the drivel...B60K 6/387 Actuated clutches, i.e. clu...B60K 6/40 characterised by the assemb...B60K 6/485 Motor-assist typeB60W 10/10 including control of change...Y02T 10/62 Hybrid vehiclesY10S 903/906 Motor or generatorY10S 903/912 Drive line clutchY10S 903/914 Actuated, e.g. engaged or d...Y10S 903/945 Characterized by control of...Y10S 903/951 Assembly or relative locati...
