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

IPC: F16K3/06 ,  F16K31/04

CPC classification number: F16K3/06 ,  F16K31/04

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.

公开(公告)号：US20230120892A1

公开(公告)日：2023-04-20

申请号：US18083672

申请日：2022-12-19

Applicant: DENSO CORPORATION

Inventor： Takehito MIZUNUMA ,  Shota KIMURA ,  Hiroki SHIMADA

IPC: F16K11/074

Abstract: In a valve device, a rotor has a hole closing portion configured to increase or decrease a covered area of a first flow hole of a stator in response to rotation of the rotor. The hole closing portion has a hole closing portion edge which extends in a radial direction of a predetermined axis and is located at a circumferential end of the hole closing portion on one side in a circumferential direction. In a state where the first flow hole is closed by the hole closing portion, when the rotor is rotated toward another side, which is opposite to the one side in the circumferential direction, the hole closing portion begins to open the first flow hole. The first flow hole has a one-side hole edge which is located at a circumferential end of the first flow hole on the one side and extends in the radial direction.

公开(公告)号：US20220186657A1

公开(公告)日：2022-06-16

申请号：US17686786

申请日：2022-03-04

Applicant: DENSO CORPORATION

Inventor： Akira HIGUCHI ,  Takehito MIZUNUMA ,  Ryou SANO

IPC: F01P7/16 ,  F16K3/08 ,  F16K11/074 ,  F25B41/42

Abstract: A valve device includes a housing integrally or separately having a flow path formation part where at least one flow path hole through which a fluid passes is formed. The valve device includes: a drive part that outputs a rotational force; and a rotation part that rotates about a predetermined axis by the rotational force output from the drive part. The rotation part includes a shaft and a rotor increasing or decreasing an opening degree of the flow path hole with rotation of the shaft. The rotor has a sliding surface that slides while facing an opening surface of the flow path formation part where the flow path hole is opened. At least a part of the rotation part is rotatably held by the housing.

公开(公告)号：US20220090700A1

公开(公告)日：2022-03-24

申请号：US17540979

申请日：2021-12-02

Applicant: DENSO CORPORATION

Inventor： Takuya HAMADA ,  Hiroki SHIMADA ,  Akira HIGUCHI ,  Takehito MIZUNUMA ,  Syota KIMURA ,  Ryou SANO

IPC: F16K31/53 ,  B60H1/00 ,  F16K31/04

Abstract: A valve device includes: a driving source making rotational motion; a rotated part provided rotatably around a predetermined axis; and a fluid passage portion having a flow hole for passing a fluid. The valve device further includes: a gear mechanism having gears to transmit rotational motion of the driving source to the rotated part by engagement between the gears to rotate the rotated part; and a biasing part biasing the rotated part toward one side in a circumferential direction with the predetermined axis at the center. The rotated part includes a rotor increasing or reducing an opening of the flow hole in conjunction with rotation of the rotated part and is rotated according to rotational motion of the driving source while being biased toward the one side in the circumferential direction by the biasing part.

公开(公告)号：US20220034562A1

公开(公告)日：2022-02-03

申请号：US17501402

申请日：2021-10-14

Applicant: DENSO CORPORATION

Inventor： Masamichi MAKIHARA ,  Yoshiki KATOH ,  Takahiro MAEDA ,  Kuniyoshi TANIOKA ,  Akira HIGUCHI ,  Takehito MIZUNUMA ,  Takuya HAMADA

IPC: F25B41/20 ,  F16K3/08 ,  F16K11/06 ,  F16K31/53

Abstract: A fluid circulation circuit includes a flow passage switching valve. The flow passage switching valve includes a body and a switcher. The body includes a first inlet, a second inlet, and outlets including a first outlet. The switcher is capable of switching a passage configuration to a state in which a fluid that has flowed in from the first inlet flows out of either one of the outlets and a state in which the fluid that has flowed in from the second inlet flows out of either one of the outlets.

公开(公告)号：US20150061657A1

公开(公告)日：2015-03-05

申请号：US14470387

申请日：2014-08-27

Applicant: DENSO CORPORATION

Inventor： Tomoyuki TAKIGUCHI ,  Ninh Duc HOANG ,  Yoshiyuki KONO ,  Takehito MIZUNUMA

IPC: G01B7/30 ,  B29C45/14 ,  B29C45/26 ,  G01R33/07 ,  G01B7/00

CPC classification number: B29C45/14655 ,  B29C2045/14672 ,  B29K2905/00 ,  B29K2995/0097 ,  B29L2031/3406 ,  F02D41/28 ,  F02D2200/0404 ,  G01D5/145 ,  G01R33/07

Abstract: A position detector apparatus includes a detector part, wiring, a resin part, a resin body, a terminal, and a lead frame. The resin part has a thickness at a wiring side portion of the detector part that is greater than a thickness on a side opposite to the wiring side portion. Therefore, when injection-molding the resin part, due to a thickness change of the resin part, the detector part is pressed against a metal mold and a position of the detecting part is fixed. Further, the resin body has a thick-resin portion and a thin-resin portion. The thickness of the thin-resin portion allows a predetermined amount of dislocation of the detector part. Therefore, if the detector part is exposed, water is prevented from intruding the lead frame and the terminal.

Abstract translation: 位置检测器装置包括检测器部分，布线，树脂部分，树脂体，端子和引线框架。 树脂部分在检测器部分的布线侧部分的厚度大于与布线侧部分相反的一侧的厚度。 因此，当注射成型树脂部件时，由于树脂部件的厚度变化，检测器部分被压在金属模具上，并且检测部件的位置被固定。 此外，树脂体具有厚树脂部分和薄树脂部分。 薄树脂部分的厚度允许检测器部分的预定量的位错。 因此，如果检测器部分被暴露，则防止水侵入引线框架和端子。

公开(公告)号：US20140366823A1

公开(公告)日：2014-12-18

申请号：US14300577

申请日：2014-06-10

Applicant: DENSO CORPORATION

Inventor： Hirohisa NODA ,  Tetsurou MITSUTANI ,  Dai OSADA ,  Takehito MIZUNUMA ,  Takehiro TANAKA ,  Shuhei OE ,  Yuusuke YASUKI

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426 ,  F01L2001/3443 ,  F01L2001/34433 ,  F01L2001/3445 ,  F01L2001/34459 ,  F01L2001/34483 ,  F01L2101/00 ,  F01L2250/02 ,  F01L2800/01 ,  F01L2800/03 ,  F02D41/064 ,  F02D41/065 ,  F02D2041/001 ,  F02N11/0814 ,  F02N19/004

Abstract: A main locking mechanism locks a phase at a main locking phase, at which an intake valve is closed at timing later than a bottom dead center, by inserting a main locking member into a main locking hole. A sub locking mechanism locks a phase at a sub locking phase advanced more than the main locking phase by inserting a sub locking member into a sub locking hole. A movable body disposed in the main locking hole reciprocates between an open position and a blocking position of the main locking hole. During a warm start of an engine, a driving source maintains the movable body at the open position at which the inserting of the main locking member into the main locking hole is maintained. In contrast, during a cold start of the engine, the driving source drives the movable body to the blocking position at which the main locking member is removed from the main locking hole.

Abstract translation: 主锁定机构通过将主锁定构件插入主锁定孔中而将主相锁定相位锁定在主锁定阶段，在主锁定阶段进气阀在比下止点更时刻关闭。 子锁定机构通过将副锁定构件插入副锁定孔中而将锁定相位锁定在主锁定相以上。 设置在主锁定孔中的可移动体在主锁定孔的打开位置和阻挡位置之间往复运动。 在发动机的暖启动期间，驱动源将可动体保持在保持主锁定构件插入主锁定孔的打开位置。 相反，在发动机的冷启动期间，驱动源将可动体驱动到主锁定构件从主锁定孔移除的阻挡位置。

公开(公告)号：US20140306696A1

公开(公告)日：2014-10-16

申请号：US14190626

申请日：2014-02-26

Applicant: DENSO CORPORATION

Inventor： Takehito MIZUNUMA ,  Tomoyuki TAKIGUCHI ,  Takamitsu KUBOTA ,  Yoshiyuki KONO

IPC: G01D5/14

CPC classification number: G01D5/14 ,  G01D5/145 ,  G01D5/2448

Abstract: A magnetism sensing element is provided to be rotatable relative to permanent magnets and outputs a magnetic force detection value, which corresponds to a perpendicular component of magnetic flux. A Hall IC calculates and outputs an output voltage, which corresponds to a relative rotational angle between the permanent magnets and the magnetism sensing element, based on the magnetic force detection value outputted by the magnetism sensing element. The Hall IC calculates the output voltage as V2=k×arcsin(V1/(VM+α))+Voffset, in which V1, V2, VM, k, α and Voffset indicate the magnetic force detection value, the output voltage, a maximum value of the magnetic force detection value, a gain, a predetermined value and a predetermined offset value.

Abstract translation: 磁传感元件能够相对于永磁体旋转，并输出对应于磁通的垂直分量的磁力检测值。 霍尔IC基于由磁感测元件输出的磁力检测值来计算并输出与永磁体和磁感测元件之间的相对旋转角度对应的输出电压。 霍尔IC计算输出电压为V2 = k×arcsin（V1 /（VM +α））+ Voffset，其中V1，V2，VM，k，α和Voffset表示磁力检测值，输出电压a 磁力检测值的最大值，增益，预定值和预定的偏移值。

公开(公告)号：US20240003440A1

公开(公告)日：2024-01-04

申请号：US18469291

申请日：2023-09-18

Applicant: DENSO CORPORATION

Inventor： Ryo SANO ,  Shota KIMURA ,  Takehito MIZUNUMA

IPC: F16K11/074 ,  F16K27/04

CPC classification number: F16K11/074 ,  F16K27/045

Abstract: In a valve device, a housing has a mounting portion that contacts a back surface of a stationary disk which is opposite to a contact surface of the stationary disk while the contact surface is opposed to a rotor. One of the stationary disk and the mounting portion has a receiving groove that receives a gasket which seals a gap between the stationary disk and the mounting portion. The gasket has: two seal surfaces that are opposed to the stationary disk and the mounting portion, respectively; and at least one lateral projection that is opposed to a groove lateral surface of the receiving groove and projects toward the groove lateral surface. The gasket is press-fitted into the receiving groove in a state where the at least one lateral projection is in contact with the groove lateral surface.

公开(公告)号：US20230279958A1

公开(公告)日：2023-09-07

申请号：US18194220

申请日：2023-03-31

Applicant: DENSO CORPORATION

Inventor： Takehito MIZUNUMA ,  Shota KIMURA ,  Ryo SANO ,  Hiroki SHIMADA

IPC: F16K11/085 ,  F16K27/06

CPC classification number: F16K11/0856 ,  F16K27/065

Abstract: A valve device includes a housing, a flow hole forming portion and a rotor. The housing has a passage for fluid. The flow hole forming portion is fixed at the passage and includes: a plurality of flow holes, each of which is configured to conduct the fluid; and at least one partition which is placed between corresponding adjacent two of the flow holes. The rotor includes a passage opening and a closing portion. The at least one partition of the flow hole forming portion has: a parallel portion which extends in parallel with a radial direction of an imaginary circle centered on a rotational axis; and a progressively varying portion which is placed on an outer side of the parallel portion in the radial direction. A width of the progressively varying portion measured in a circumferential direction is progressively increased toward the outer side in the radial direction.