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公开(公告)号：US20250028346A1
公开(公告)日：2025-01-23
申请号：US18909341
申请日：2024-10-08
Applicant: DENSO CORPORATION
Inventor： Daisuke HOKUTO , Etsugo YANAGIDA , Yuki MATSUNAGA , Masashi ARAO , Ryo SANO , Kengo ITO
Abstract: A pedal device includes: a pedal configured to rotate about a rotational axis; and a reaction force generator configured to generate a reaction force corresponding to an urging force generated by pressing operation of the pedal. The pedal includes an urging portion configured to transmit the urging force to the reaction force generator when the urging portion is rotated integrally with the pedal. The reaction force generator includes a linearly moving portion configured to move linearly in an extending direction of a central axis of the reaction force generator when the pressing operation is performed. The urging portion has an urging surface configured to urge a contact surface of the linearly moving portion. The urging portion is placed at a position where a virtual urging center passes through a virtual axis perpendicular line when the pedal is rotated within a predetermined rotational range.
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公开(公告)号：US20240003429A1
公开(公告)日：2024-01-04
申请号：US18468972
申请日：2023-09-18
Applicant: DENSO CORPORATION
Inventor： Takuya HAMADA , Ryo SANO , Atsushi TANAKA
Abstract: A valve device includes a stationary disk, a shaft and a rotor. The valve device includes: a housing that has a boss portion, through which the shaft is inserted; and a seal member that is shaped in a ring form and is configured to seal a gap between the shaft and the boss portion. The shaft includes a holder that has a contact portion which is in contact with the seal member. The holder is made of a polymer material which includes reinforcing fibers contained in resin. At least the contact portion at the holder extends in an axial direction of the shaft, and a distal end portion of the holder located on one side in the axial direction is coupled to a gear arrangement of a drive device. The distal end portion of the holder has a trace of an injection gate for injecting the polymer material.
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公开(公告)号：US20230228333A1
公开(公告)日：2023-07-20
申请号：US18190565
申请日：2023-03-27
Applicant: DENSO CORPORATION
Inventor： Takuya HAMADA , Ryo SANO , Atsushi TANAKA , Akira HIGUCHI
CPC classification number: F16K3/0254 , F16K3/08 , F16K3/34 , F16K31/44
Abstract: A valve device includes a housing, a stationary disk, a drive device, a shaft and a rotor. The stationary disk is fixed at an inside of the housing and has at least one flow passage hole. The shaft is rotated about a central axis by the drive device. The rotor increases or decreases an opening degree of the at least one flow passage hole. The rotor includes: a drive disk that slides relative to the stationary disk; and a lever that is fixed to the drive disk and couples between the drive disk and the shaft. A torsion spring is placed between the shaft and the lever and urges the lever relative to the shaft in a circumferential direction around the central axis of the shaft. The shaft has a plurality of contact portions configured to contact the lever and respectively located at a plurality of locations.
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公开(公告)号：US20240003458A1
公开(公告)日：2024-01-04
申请号：US18468925
申请日：2023-09-18
Applicant: DENSO CORPORATION
Inventor： Shota KIMURA , Ryo SANO
Abstract: In a valve device, a rotor is configured to increase or decrease an opening degree of at least one passage hole formed at a stationary disk in response to rotation of a shaft. The rotor includes a drive disk and a lever while the lever is fixed to the drive disk and couples between the drive disk and the shaft and enables integral rotation of the drive disk and the shaft. The drive disk has a drive-side insertion hole through which the shaft is inserted. A hole diameter of the drive-side insertion hole is larger than a shaft diameter of the shaft, and a hole diameter of at least one of two end portions of the drive-side insertion hole, which are opposite to each other in the axial direction, is larger than a smallest hole diameter of the drive-side insertion hole.
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公开(公告)号：US20200256241A1
公开(公告)日：2020-08-13
申请号：US16779845
申请日：2020-02-03
Applicant: DENSO CORPORATION
Inventor： Ryo SANO
Abstract: A cooling-water control valve device includes a valve member, a housing for accommodating the valve member, a pipe unit, a valve seat member, a spring and so on. The pipe unit has, at its axial end on a side facing to the valve member, an outside cylindrical portion and an inside cylindrical portion, which is coaxially arranged with the outside cylindrical portion at a radial-inside position of the outside cylindrical portion. An annular accommodation space is formed between the inside cylindrical portion and the outside cylindrical portion. The spring and the valve seat member are arranged in the annular accommodation space.
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Patent Agency Ranking
公开(公告)号：US20140034029A1
公开(公告)日：2014-02-06
申请号：US13948689
申请日：2013-07-23
Applicant: DENSO CORPORATION
Inventor： Kazushi SASAKI , Ryo SANO , Satoshi ISHIGAKI , Hiroki SHIMADA
CPC classification number: F02M26/54 , F16K31/042 , F16K31/047 , F16K31/52408 , F16K37/0083
Abstract: A valve apparatus performs at least one of a first operation in which an electric motor is energized in a valve-close direction and a rotation shaft is rotated until its rotation is stopped and a second operation in which the electric motor is deenergized and a valve is fully closed by a biasing force of a return spring. Thereby, a rotation angle of the rotation shaft becomes a rotation-stop angle or the rotation angle becomes in the backlash range, so that a biasing force of the return spring is not transmitted to the rotation shaft. Then, the electric motor generates a specified torque, which is less than a valve-opening torque by which the valve starts opening. Thereby, a rotation angle of the rotation shaft can be stopped at a full-close angle. The full-close angle can be made correspond to an output of a rotational angle sensor.
Abstract translation: 阀装置执行以下操作中的至少一个：电动机在关闭方向上通电并且旋转轴旋转直到其旋转停止的第一操作和电动机断电的第二操作和阀是 由复位弹簧的偏置力完全关闭。 由此，旋转轴的旋转角度成为止转角，或旋转角度成为间隙范围，使得复位弹簧的作用力不会传递给旋转轴。 然后，电动机产生规定的转矩，该转矩小于开阀开阀的开阀力矩。 由此，旋转轴的旋转角度能够以全角度停止。 全关角度可以对应于旋转角度传感器的输出。
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公开(公告)号：US20130263830A1
公开(公告)日：2013-10-10
申请号：US13859091
申请日：2013-04-09
Applicant: DENSO CORPORATION
Inventor： Katsuya TORII , Ryo SANO
IPC: F02M25/07
CPC classification number: F02M26/54
Abstract: A rotational angle sensor for an EGR valve memorizes a correlated characteristic between hall voltage and output voltage. Hall voltage of the rotational angle sensor at a reference angle is matched to a boundary value for the hall voltage on a valve closing side, wherein the reference angle is set at such an angle, which is shifted by a predetermined angle in the valve closing side from an upper-limit angle of a flow-rate dead zone. A valve full-closing control is carried out in order that the hall voltage will coincide with the boundary value on the valve closing side. An actual value of the rotational angle coincides with a value, which is shifted from the reference angle in a valve closing or opening direction by a changing range decided by changing factors of a sensor side and/or a mechanical-part side.
Abstract translation: 用于EGR阀的旋转角度传感器存储霍尔电压和输出电压之间的相关特性。 旋转角度传感器的参考角的霍尔电压与关闭侧的霍尔电压的边界值相匹配，其中基准角被设定为在关闭侧偏移预定角度的角度 从流量死区的上限角度。 进行阀门全闭合控制，以使霍尔电压与阀关闭侧的边界值一致。 旋转角度的实际值与从关闭或打开方向的参考角度偏移由传感器侧和/或机械部分侧的变化因素决定的变化范围的值相一致。
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公开(公告)号：US20240003431A1
公开(公告)日：2024-01-04
申请号：US18469004
申请日：2023-09-18
Applicant: DENSO CORPORATION
Inventor： Atsushi TANAKA , Ryo SANO
Abstract: A valve device includes: a housing; a passage forming portion that has at least one passage hole configured to conduct a fluid; a drive device that is configured to output a rotational force; and a shaft that is configured to be rotated about a central axis. The valve device includes: a rotor that is configured to increase or decrease an opening degree of the at least one passage hole in response to rotation of the shaft; and a torsion spring that surrounds the central axis and is configured to urge the shaft relative to the housing in a circumferential direction of the central axis of the shaft. The housing has a stopper that is configured to contact the shaft and thereby limit a rotational drive range of the shaft when the shaft is rotated to a predetermined position. The stopper is placed at an inside of the torsion spring.
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公开(公告)号：US20240003430A1
公开(公告)日：2024-01-04
申请号：US18469218
申请日：2023-09-18
Applicant: DENSO CORPORATION
Inventor： Takehito MIZUNUMA , Ryo SANO
Abstract: In a valve device, a rotor includes a drive disk and a lever fixed to the drive disk. The lever couples between the drive disk and a shaft. In the valve device, a first torsion spring is placed between a housing and the shaft, and a second torsion spring is placed between the shaft and the lever. A drive device includes an electric motor configured to drive the shaft in a rotational drive range, which is between an initial rotational position and a maximum rotational position, in a first rotational direction toward the initial rotational position and a second rotational direction opposite to the first rotational direction. The first torsion spring urges the shaft relative to the housing in the second rotational direction in the state where the shaft is placed in the initial rotational position upon the rotation of the shaft in the first rotational direction.
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公开(公告)号：US20230228335A1
公开(公告)日：2023-07-20
申请号：US18190514
申请日：2023-03-27
Applicant: DENSO CORPORATION
Inventor： Ryo SANO
Abstract: A valve device includes a housing, a stationary disk, a drive device, a shaft and a rotor. The stationary disk is fixed at an inside of the housing and has at least one flow passage hole. The shaft is rotated about a central axis by the drive device. The rotor increases or decreases an opening degree of the at least one flow passage hole. The rotor includes: a drive disk that slides relative to the stationary disk; and a lever that is fixed to the drive disk and couples between the drive disk and the shaft. A first torsion spring is placed between the housing and the shaft and urges the shaft relative to the housing in a circumferential direction around the central axis, and a second torsion spring is placed between the shaft and the lever and urges the lever relative to the shaft in the circumferential direction.
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