公开(公告)号：US20220122754A1

公开(公告)日：2022-04-21

申请号：US17566230

申请日：2021-12-30

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SASAO

IPC: H01F7/16 ,  H01F7/08

Abstract: A solenoid includes a coil portion, a yoke having a side portion and a bottom portion, a plunger, and a stator core. The stator core has a magnetic attraction core and a sliding core which has a tubular core portion and a first magnetic flux transfer portion formed from the tubular core portion and the core end portion toward an outside in a radial direction to transfer magnetic flux between the yoke and the core portion. A breathing groove communicating an inside and an outside of the first magnetic flux transfer portion in the radial direction is formed on at least one of a first facing surface facing the bottom portion in a first magnetic flux transfer portion and a second facing surface facing the first magnetic flux transfer portion at the bottom portion so as to be positioned in a vertical direction when the solenoid is assembled.

公开(公告)号：US20210278007A1

公开(公告)日：2021-09-09

申请号：US17327213

申请日：2021-05-21

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SASAO ,  Yutaro WATARI

IPC: F16K31/06 ,  H01F7/16 ,  H01F7/08

Abstract: A solenoid includes a coil, a plunger, a yoke, and a stator core. The yoke includes a side wall and a bottom. The stator core includes a magnetic attraction core, a slide core, and a magnetic flux passage restricting portion. The slide core includes: a core portion formed in a tubular shape; and a first magnetic flux transmitting portion configured to transmit magnetic flux between the yoke and the plunger through the core portion. The magnetic flux passage restricting portion is configured to restrict passage of the magnetic flux between the slide core and the magnetic attraction core. A second magnetic flux transmitting portion is configured to transmit the magnetic flux between the magnetic attraction core and the side wall. An elastic member is arranged in contact with an end surface of the magnetic attraction core and is configured to bias the stator core toward the bottom.

公开(公告)号：US20200089261A1

公开(公告)日：2020-03-19

申请号：US16573074

申请日：2019-09-17

Applicant: DENSO CORPORATION

Inventor： Masaaki KONO ,  Yusuke KIMURA ,  Fukuo KITAGAWA ,  Takahiro TOMEDA ,  Tadayoshi NAKASE ,  Shinichi KONDO ,  Kazuhiro SASAO ,  Masato ARAI ,  Motoyoshi ANDO

IPC: G05D16/20 ,  F16K31/06 ,  G05B19/042

Abstract: A current control device includes a target setting unit, a storage unit, an oil pressure ratio calculation unit, a specific current detection unit and a correction unit. The target setting unit adds a dither amplitude to a target current so that the current of the solenoid periodically changes at a dither cycle period longer than a PWM cycle period of the solenoid. The storage unit stores a stroke-current relationship between a stroke of the spool and the current of the solenoid. The oil pressure ratio calculation unit calculates an oil pressure ratio which is a value calculated by dividing an amplitude of the output oil pressure by an average value of the output oil pressure. The specific current detection unit detects a specific current based on the oil pressure ratio. The correction unit corrects the stroke-current relationship based on the specific stroke and the specific current.

公开(公告)号：US20220084730A1

公开(公告)日：2022-03-17

申请号：US17474441

申请日：2021-09-14

Applicant: DENSO CORPORATION

Inventor： Shinichi KONDOU ,  Kazuhiro SASAO ,  Masato ARAI

IPC: H01F7/08 ,  H01F7/16 ,  F16K31/06

Abstract: A solenoid valve includes a valve portion and a solenoid portion. The valve portion has a sleeve and a valve body. The solenoid portion includes a tubular coil portion, a magnetic yoke having a side surface portion and a bottom portion, a columnar plunger, a shaft, a stator core having a core shaft hole for sliding the plunger in the axial direction, and a base portion having a base shaft hole. In a radial thickness of the sleeve, a thickness of a part corresponding to an end outer peripheral surface is smaller than a thickness of a sliding portion of an inner peripheral surface of the sleeve, which is a portion on which the valve body slides.

公开(公告)号：US20210327626A1

公开(公告)日：2021-10-21

申请号：US17327374

申请日：2021-05-21

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SASAO ,  Yutaro WATARI

IPC: H01F7/16 ,  F16K31/06

Abstract: A solenoid includes: a coil; a plunger; a yoke including a side wall provided along the axial direction and a bottom opposed to a base end surface of the plunger; and a stator core including a magnetic attraction core, a slide core, and a magnetic flux passage restricting portion. The slide core includes: a core portion; and a first magnetic flux transmitting portion expanding radially outward from an end portion of the core portion and transmits magnetic flux between the yoke and the plunger through the core portion. The magnetic flux passage restricting portion restricts passage of the magnetic flux between the slide core and the magnetic attraction core. A second magnetic flux transmitting portion transmits the magnetic flux between the magnetic attraction core and the side wall. The first magnetic flux transmitting portion is pressed and in contact with at least one of the side wall or the bottom.

公开(公告)号：US20130146799A1

公开(公告)日：2013-06-13

申请号：US13710747

申请日：2012-12-11

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SASAO

IPC: F16K3/24

CPC classification number: F16K3/24 ,  F16K11/07 ,  F16K31/0696

Abstract: An oil pressure control device includes a valve body and a spool valve arranged in the valve body. When the valve body is mounted to a vehicle, the valve body is arranged in air, and has a concave portion which stores oil at a position facing on an upper side. The spool valve has a damper chamber and an orifice causing the damper chamber to communicate with outside. The concave portion is arranged to communicate with a clearance defined between a sleeve of the spool valve and the valve body, and the orifice is opened in a bottom part of the concave portion.

Abstract translation: 油压控制装置包括阀体和配置在阀体内的滑阀。 当阀体安装在车辆上时，阀体布置在空气中，并且具有在面向上侧的位置上储存油的凹部。 滑阀具有阻尼室和使阻尼室与外部连通的孔口。 凹部被设置成与滑阀的套筒和阀体之间限定的间隙连通，并且孔口在凹部的底部开口。

公开(公告)号：US20200088309A1

公开(公告)日：2020-03-19

申请号：US16569965

申请日：2019-09-13

Applicant: DENSO CORPORATION

Inventor： Masaaki KONO ,  Takahiro TOMEDA ,  Fukuo KITAGAWA ,  Yusuke KIMURA ,  Tadayoshi NAKASE ,  Shinichi KONDO ,  Kazuhiro SASAO ,  Masato ARAI ,  Motoyoshi ANDO

IPC: F16K11/07 ,  F16K27/04 ,  F16F1/04 ,  F16K31/56

Abstract: A spool valve unit includes a sleeve member having a high-pressure port and a low-pressure port, a spool member movably accommodated in the sleeve member in an axial direction, and a spring member for biasing the spool member in a first axial direction. The spool valve unit produces an intermediate fluid pressure to be outputted to an outside of the spool valve unit, when electromagnetic force is applied to the spool member so that the spool member is moved at a high speed between the high-pressure port and the low-pressure port. The spring member is composed of a non-linear spring, a biasing force of which is non-linearly changed with respect to a displacement of the spool member.

公开(公告)号：US20210278008A1

公开(公告)日：2021-09-09

申请号：US17327283

申请日：2021-05-21

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SASAO

IPC: F16K31/06 ,  H01F7/16

Abstract: A solenoid includes: a coil that generates magnetic force when energized; a plunger formed in a columnar shape and configured to slide in an axial direction; a yoke provided along the axial direction and includes a tubular portion; a bottom opposed to a base end surface of the plunger; and a stator core. The stator core includes: a magnetic attraction core that magnetically attracts the plunger by magnetic force; a slide core; and a magnetic flux passage restricting portion that restricts passage of the magnetic flux between the slide core and the magnetic attraction core. The slide core includes: a core portion arranged radially outside the plunger; and a magnetic flux transmitting portion that expands radially outward from an end portion of the core portion. The yoke includes a magnetic flux passage area expansion portion that is formed on the tubular portion and protrudes radially inward from the tubular portion.

公开(公告)号：US20140299081A1

公开(公告)日：2014-10-09

申请号：US14247515

申请日：2014-04-08

Applicant: DENSO CORPORATION

Inventor： Shinya NAKATA ,  Kazuhiro SASAO ,  Takashi OOGA ,  Takehiro TANAKA ,  Kosei TAKAGI ,  Yuusuke YASUKI ,  Shuhei OE

IPC: F02D13/02

CPC classification number: F02D13/02 ,  F01L1/3442 ,  F01L31/06 ,  F01L2001/34423 ,  F01L2001/34426 ,  F01L2001/34453 ,  F01L2013/116 ,  Y02T10/18

Abstract: A valve timing control apparatus includes a temperature sensing member which expands at a main lock phase when a temperature of an engine is higher than or equal to a predetermined temperature so as to prohibit a main lock component from moving out of a main lock hole to a guide slot. The temperature sensing member shrinks at the main lock phase when the temperature of the engine is lower than the predetermined temperature so as to allow the main lock component to move out of the main lock hole toward the guide slot.

Abstract translation: 气门正时控制装置包括温度检测构件，其在发动机的温度高于或等于预定温度时在主锁定阶段膨胀，以便禁止主锁定部件从主锁孔移出到 导槽 当发动机的温度低于预定温度时，温度感测部件在主锁定阶段收缩，从而允许主锁定部件朝向引导槽移出主锁定孔。

公开(公告)号：US20230013945A1

公开(公告)日：2023-01-19

申请号：US17948962

申请日：2022-09-20

Applicant: DENSO CORPORATION

Inventor： Kazuhiro SASAO

IPC: F16K31/06

Abstract: A valve portion of a solenoid valve has a sleeve and a spool. The sleeve has a housing portion larger than an insertion hole in a radial direction. An elastic member is arranged in the housing portion to urge a stator core toward a bottom of a yoke. The elastic member is in contact with a surface of the housing portion, which is non-contact with the spool, facing toward a solenoid portion. The elastic member is in contact with an end surface of a magnetic attraction core adjacent to the valve portion.