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公开(公告)号：US11953059B2
公开(公告)日：2024-04-09
申请号：US17137730
申请日：2020-12-30
Applicant: DENSO CORPORATION
Inventor： Ryo Ishibashi , Akira Takagi , Takumi Sugiura
CPC classification number: F16D13/52 , F16D23/12 , F16H25/12 , F16D2023/123 , F16D28/00
Abstract: A speed reducer is configured to reduce a rotational speed of rotation generated by torque received from a drive device and output the torque of the rotation of the reduced rotational speed. A drive cam has a plurality of drive cam grooves formed at one end surface of the drive cam and is rotated by the torque outputted from the speed reducer. A driven cam has a plurality of driven cam grooves formed at one end surface of the driven cam while each of the plurality of rolling elements is clamped between a corresponding one of the plurality of drive cam grooves and a corresponding one of the plurality of driven cam grooves. At least a part of each of the plurality of drive cam grooves overlaps with the speed reducer in the axial direction.
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公开(公告)号：US11808306B2
公开(公告)日：2023-11-07
申请号：US17583725
申请日：2022-01-25
Applicant: DENSO CORPORATION
Inventor： Ryo Ishibashi , Takumi Sugiura , Akira Takagi
IPC: F16D23/12 , F16D13/46 , F16C19/06 , F16D13/32 , F16D13/52 , F16D25/0638 , F16D43/26 , F16D48/02 , F16D48/06 , F16H1/46 , F16H25/12 , F16J15/10
CPC classification number: F16D13/46 , F16C19/06 , F16D13/32 , F16D13/52 , F16D23/12 , F16D25/0638 , F16D43/26 , F16D48/02 , F16D48/06 , F16H1/46 , F16H25/12 , F16J15/10
Abstract: Torque of a prime mover is input into a sun gear. A planetary gear revolves in a circumferential direction of the sun gear while rotating and meshing with the sun gear. A carrier has an annular shape, rotatably supports the planetary gear, and is rotatable relative to the sun gear. A first ring gear is fixed to a housing, and meshes with the planetary gear. A second ring gear meshes with the planetary gear, is different from the first ring gear in number of teeth of a tooth portion, and outputs torque to a rotation portion. At least a part of the sun gear in an axial direction is located radially inward of the carrier. At least a part of the first ring gear and at least a part of the second ring gear in the axial direction are located radially outward of the carrier.
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公开(公告)号：US20220145942A1
公开(公告)日：2022-05-12
申请号：US17582593
申请日：2022-01-24
Applicant: DENSO CORPORATION
Inventor： Souichirou Hayashi , Takumi Sugiura , Akira Takagi
Abstract: A state changing unit is provided radially outward of a translation portion and movable in an axial direction relative to the translation portion. The state changing unit is in contact with or separated from the clutch. The state changing unit receives a force in the axial direction from the translation portion such that the state changing unit is pressed against the clutch. The state changing unit is capable of changing a state of the clutch to an engaged state or a disengaged state according to a position of the translation portion in the axial direction relative to the housing. A movement restriction portion is provided on the translation portion and located between the state changing unit and the clutch. The movement restriction portion contacts the state changing unit and restricts movement of the state changing unit relative to the translation portion toward the clutch.
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公开(公告)号：US09927023B2
公开(公告)日：2018-03-27
申请号：US15044540
申请日：2016-02-16
Applicant: DENSO CORPORATION
Inventor： Akira Takagi , Hiroshi Tanimura , Hajime Yokohama , Hirohisa Noda
CPC classification number: F16H61/0206 , F16H61/0021 , F16H61/0251 , F16H2061/0253
Abstract: A first-type passage switching valve is in an oil supply line connecting a friction element to an N/H type pressure control valve and a second-type passage switching valve is in another oil supply line connecting another friction element to an N/L type pressure control valve. A working-pressure output valve outputs a hydraulic working pressure to each of the first-type and the second-type passage switching valves. The first-type passage switching valve changes communication condition from a first state connecting the friction element and the pressure control valve with each other to a second state connecting the friction element and a drain side with each other, or vice versa. The second-type passage switching valve changes communication condition from a first state connecting the friction element and the pressure control valve with each other to a third state connecting the friction element and a hydraulic pressure source with each other, or vice versa.
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公开(公告)号：US09816640B2
公开(公告)日：2017-11-14
申请号：US14728207
申请日：2015-06-02
Applicant: DENSO CORPORATION
Inventor： Ryo Ishibashi , Akira Takagi
CPC classification number: F16K31/0675 , F16K31/0613 , G05D16/202
Abstract: In a method for setting a command-response characteristic of an oil pressure control apparatus for each oil temperature, the command-response characteristic actually measured at a reference oil temperature is treated as a reference I-P characteristic. Then, a stroke-response characteristic is calculated based on the reference I-P characteristic, a thrust-force correlation and a restoring-force correlation. An overlapping length and a clearance width of overlapping areas between a sleeve and a spool of the oil pressure control apparatus are estimated based on the reference I-P characteristic and the stroke-response characteristic. Finally, the command-response characteristics for each oil temperature are decided and set based on the overlapping length and the clearance width.
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Patent Agency Ranking
公开(公告)号：US09631721B2
公开(公告)日：2017-04-25
申请号：US14802191
申请日：2015-07-17
Applicant: DENSO CORPORATION
Inventor： Akira Takagi
CPC classification number: F16H61/0031 , F16H61/0206 , F16H61/12 , F16H2059/683 , F16H2059/746 , F16H2061/0087 , F16H2061/1212
Abstract: Oil pressure is produced by an electrical pump during an engine operation is temporarily stopped according to an idling-stop function and respectively supplied to multiple electromagnetic valves. A command value for a drive current is supplied to each of a driver circuit in order to adjust the oil pressure to be outputted from the corresponding electromagnetic valve. Such adjusted oil pressure is applied to a corresponding gear-change element and an oil-pressure a detecting device detects the oil pressure applied to the gear-change element to obtain detection value for the oil pressure. A current-command characteristic for each of the electromagnetic valves is updated based on the command value of the drive current and the detection value of the oil pressure.
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公开(公告)号：US20140283794A1
公开(公告)日：2014-09-25
申请号：US14097700
申请日：2013-12-05
Applicant: DENSO CORPORATION
Inventor： Akira Takagi , Makoto Kondo , Yuichi Takemura
IPC: F02M25/08
CPC classification number: F02M25/0836 , F02M21/0239 , Y02T10/32
Abstract: A pressure control valve controls a pressure of a gaseous fuel according to an engine operation state. The pressure control valve has a movable valve body, a manifold chamber that communicates with an intake manifold, and a passage that is connected to an injector. An intake manifold pressure from the manifold chamber moves the movable valve body in a valve opening direction and an output pressure from the passage moves the movable valve body in a valve closing direction. In such manner, the pressure control valve changes a magnitude of a differential pressure between the output pressure and the intake manifold pressure according to a magnitude of the intake manifold pressure.
Abstract translation: 压力控制阀根据发动机运转状态控制气体燃料的压力。 压力控制阀具有可动阀体，与进气歧管连通的歧管室以及连接到喷射器的通道。 来自歧管室的进气歧管压力使可动阀体沿阀打开方向移动，并且来自通道的输出压力使可动阀体沿关闭方向移动。 以这种方式，压力控制阀根据进气歧管压力的大小改变输出压力和进气歧管压力之间的差压的大小。
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公开(公告)号：US12071985B2
公开(公告)日：2024-08-27
申请号：US18532909
申请日：2023-12-07
Applicant: DENSO CORPORATION
Inventor： Hirohisa Noda , Ryo Ishibashi , Akira Takagi
CPC classification number: F16D23/12 , F16D28/00 , F16D2023/123
Abstract: A housing is placed at an inside space of a case to be installed on a vehicle. The housing includes: a housing plate portion configured to contact a case plate portion of the case; and a receiving space located on one side of the housing plate portion which is opposite to the case plate portion. An electric motor is placed at the receiving space and is configured to output a torque. The housing includes: a housing ventilation hole that extends through the housing plate portion and communicates between an outside space of the housing and the receiving space; and a breathable filter that is placed on a side of the housing ventilation hole, at which the case plate portion is placed, to cover the housing ventilation hole, while the breathable filter is configured to perm it a gas to pass through the breathable filter.
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公开(公告)号：US11815136B2
公开(公告)日：2023-11-14
申请号：US17576394
申请日：2022-01-14
Applicant: DENSO CORPORATION
Inventor： Souichirou Hayashi , Takumi Sugiura , Akira Takagi
IPC: F16D23/12 , F16H37/12 , F16H57/02 , H02K7/108 , H02K7/116 , F16D13/22 , F16D125/36 , F16D127/02
CPC classification number: F16D23/12 , F16H37/124 , F16H57/02 , H02K7/108 , H02K7/116 , F16D13/22 , F16D2023/123 , F16D2125/36 , F16D2127/02 , F16H2057/02034 , F16H2057/02043
Abstract: A rotational translation unit includes a rotation portion that rotates relative to a housing upon receiving an input of torque output from a speed reducer, and a translation portion that moves relative to the housing in an axial direction according to rotation of the rotation portion relative to the housing. A clutch is provided between a first transmission portion and a second transmission portion that are rotatable relative to the housing, and the clutch allows transmission of the torque between the first transmission portion and the second transmission portion in an engaged state of the clutch, and interrupts the transmission of the torque between the first transmission portion and the second transmission portion in a disengaged state of the clutch. A return spring is capable of urging the rotational translation unit in a direction away from the clutch relative to the housing.
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公开(公告)号：US11773915B2
公开(公告)日：2023-10-03
申请号：US17582482
申请日：2022-01-24
Applicant: DENSO CORPORATION
Inventor： Akira Takagi , Ryo Ishibashi , Takumi Sugiura
IPC: F16D13/46 , F16C19/06 , F16D13/32 , F16D13/52 , F16D23/12 , F16D25/0638 , F16D43/26 , F16D48/02 , F16D48/06 , F16H1/46 , F16H25/12 , F16J15/10
CPC classification number: F16D13/46 , F16C19/06 , F16D13/32 , F16D13/52 , F16D23/12 , F16D25/0638 , F16D43/26 , F16D48/02 , F16D48/06 , F16H1/46 , F16H25/12 , F16J15/10
Abstract: A housing includes an accommodation space for a prime mover and a speed reducer. A rotational translation unit includes a rotation portion that rotates relative to the housing upon receiving torque outputted from the speed reducer, and a translation portion that moves relative to the housing in an axial direction according to rotation of the rotation portion. The accommodation space is between the rotation portion and the housing. A clutch in a clutch space allows or interrupts transmission of torque between a first transmission portion and a second transmission portion. The rotation portion is between the clutch space and the accommodation space. A sealing member has an annular shape in contact with the rotation portion, and maintains an air-tight or liquid-tight state between the accommodation space and the clutch space.
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