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公开(公告)号：US11338671B2
公开(公告)日：2022-05-24
申请号：US16888067
申请日：2020-05-29
摘要： A hydraulic transaxle of the present invention includes an axle, a hydraulic static transmission (“HST”), a center case that has pair of oil passages for circulating the hydraulic oil between the hydraulic pump and the hydraulic motor, and a gear mechanism that transmits an output of the HST to the axle. A case supports the axle and accommodates the HST while also forming an oil reservoir. A hydraulic motor of the HST includes a motor shaft, a cylinder block with a plurality of cylinders fixed to the motor shaft, a plurality of pistons inserted into the cylinders, a fixed swash plate abutted by the plurality of pistons, and a fixed swash plate holder that supports the fixed swash plate with respect to the case. The motor shaft of the hydraulic motor is supported by the center case and the fixed swash plate holder.
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公开(公告)号：US11207977B2
公开(公告)日：2021-12-28
申请号：US16718901
申请日：2019-12-18
发明人： Hiroshi Sugimoto , Akihiro Ima , Toshifumi Yasuda
摘要： An axle drive apparatus of the present invention includes an adapter unit that has an adapter case connectable to an axle drive case while supporting a first motor, an adapter input member connected to an output shaft of the first motor by connection of the first motor to the adapter case, an adapter output member that is connected to an axle drive input member of the axle drive apparatus by connection of the adapter case to an axle drive case, and an adapter power transmission mechanism that operatively transmits the rotational power of the adapter input member to the adapter output member. The axle drive apparatus is connectable to a vehicle frame through an axle drive case side frame connecting part and an adapter case side frame connecting part respectively provided at the axle drive case and the adapter case.
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公开(公告)号：US10808813B2
公开(公告)日：2020-10-20
申请号：US15341452
申请日：2016-11-02
IPC分类号： F16H37/02 , B60K6/36 , B60K6/48 , B60W10/02 , B60K6/52 , B60K6/40 , B60K6/405 , B60K6/543 , B60K6/387 , B60W10/06 , B60W10/08
摘要： A transaxle may include a motor, an input shaft, first and second output shafts, and first and second clutches. The input shaft has first and second ends. The first end of the input shaft is structured to receive an engine power from an engine. The second end of the input shaft is structured to receive motor power from the motor. The first output shaft is driven by power outputted from the input shaft. The second output shaft is driven by the motor power. The second output shaft is extended coaxially to the input shaft. The first clutch is interposed between the motor and the input shaft. The second clutch is interposed between the motor and the second output shaft. The first clutch and the second clutch are coaxially disposed between the second end of the input shaft and an axial end of the second output shaft.
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公开(公告)号：US10408319B2
公开(公告)日：2019-09-10
申请号：US15274995
申请日：2016-09-23
摘要： A MTD unit according to a present disclosure includes a bearing member that has an inner ring, a plurality of rolling elements and an outer ring and is capable of bearing a radial load and a unidirectional axial load, a retainer that has a retaining part retaining the rolling elements such that the rolling elements are rotatable around their own axes and rotates around an axis of the inner ring in accordance with an orbital motion of the rolling elements around the inner ring, and a case that accommodates the bearing member and the retainer, wherein the case has a piston that is axially movable so as to push a movable body, which is either the inner ring or the outer ring, in a first axial direction, an oil chamber provided on an opposite side of the piston from the movable body, and an oil passage for guiding pressurized oil to the oil chamber.
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公开(公告)号：US10215225B2
公开(公告)日：2019-02-26
申请号：US15469027
申请日：2017-03-24
摘要： In a power-transmitting mechanism with rolling-element bearing according to the present invention, an inner ring has plural inner ring members disposed in series in an axial direction, an outer ring has plural outer ring members respectively cooperating with the plural inner ring members. Plural rolling elements are disposed between the cooperating inner ring members and outer ring members. A retainer has plural partitions retaining the plural rolling elements at predetermined intervals in the circumferential direction such that rolling elements disposed between one pair of cooperating inner ring and outer ring members and rolling elements disposed between another pair of cooperating inner ring and outer ring members orbit the corresponding inner ring members in a synchronized manner, and a connector connecting the plural partitions such that the plural partitions integrally rotate around an axis.
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公开(公告)号：US11547051B2
公开(公告)日：2023-01-10
申请号：US16191063
申请日：2018-11-14
IPC分类号： A01D69/03 , A01D69/06 , F16H7/02 , B60K17/04 , B60K17/10 , B60K7/00 , F16H39/14 , F16D121/16
摘要： A hydrostatic transaxle includes: a casing that is provided with an openable and closable filter insertion port and is filled with hydraulic oil; a hydraulic continuously variable transmission that is arranged inside the casing; a filter holding member that includes a support base that is a hollow cylindrical portion and oil-tightly partitions an inside of a cylinder and an outside of the cylinder, and a filter connection port that is a hollow cylindrical portion extending from a peripheral side surface of the support base and communicating with the inside of the cylinder, the support base communicating the inside of the cylinder to the port, and arranged between the center section and the casing facing the port; and a filter body that is freely inserted to and removed from the casing via the filter insertion port.
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公开(公告)号：US11440401B2
公开(公告)日：2022-09-13
申请号：US17113584
申请日：2020-12-07
发明人： Hiroshi Sugimoto , Mai Terada , Koji Kiyooka
IPC分类号： B60K17/10
摘要： A transaxle casing has a fluid sump having a gear top cover, an HST, a reduction gear train and at least one axle disposed in the transaxle casing. The gear top cover accommodates a part of a rotation portion of the reduction gear train. An air supply and exhaust hole is disposed on an upper surface of the gear top cover facing an air sump and is arranged at a position different from a point above a bevel gear. A breather is attached at the air supply and exhaust hole, and a first inner wall extending downward from the upper surface of the upper casing member, is positioned between the part of the bevel gear and the air supply and exhaust hole.
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公开(公告)号：US10670127B2
公开(公告)日：2020-06-02
申请号：US15672751
申请日：2017-08-09
发明人： Hiroshi Sugimoto , Nobuhiro Shimobayashi , Toshifumi Yasuda , Takehiro Oota , Daisuke Murashima
IPC分类号： F16H47/02 , B60K17/10 , F16H57/027 , F16H57/04 , F16H57/02
摘要： A transaxle comprises a hydrostatic transmission (hereinafter, “HST”), an axle, a gear train transmitting power from the HST to the axle, a casing carrying the HST, the gear train and the axle and providing a fluid sump. The casing has an air space over the fluid sump of a gear chamber, a breather cap for ventilation of the air space and for an oil cap is installed on a top part of the casing, and a partition plate is installed right under the breather cap and prevents the fluid sup facing directly to the breather cap.
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公开(公告)号：US20190141898A1
公开(公告)日：2019-05-16
申请号：US16191063
申请日：2018-11-14
摘要： A hydrostatic transaxle includes: a casing that is provided with an openable and closable filter insertion port and is filled with hydraulic oil; a hydraulic continuously variable transmission that is arranged inside the casing; a filter holding member that includes a support base that is a hollow cylindrical portion and oil-tightly partitions an inside of a cylinder and an outside of the cylinder, and a filter connection port that is a hollow cylindrical portion extending from a peripheral side surface of the support base and communicating with the inside of the cylinder, the support base communicating the inside of the cylinder to the port, and arranged between the center section and the casing facing the port; and a filter body that is freely inserted to and removed from the casing via the filter insertion port.
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