公开(公告)号：US10330025B2

公开(公告)日：2019-06-25

申请号：US15524728

申请日：2015-12-15

Applicant: DENSO CORPORATION

Inventor： Ryo Noumura ,  Yasushi Kawano ,  Tohru Shimizu

IPC: F02D9/10 ,  F02D11/10 ,  F16K1/22 ,  F16K1/226 ,  F16C33/78 ,  F16K1/32 ,  F16C19/06 ,  F16C19/10 ,  F16C19/52 ,  F16C21/00

Abstract: A surface of a bearing member on a flow passage forming chamber-side is disposed to be exposed to the chamber. The bearing member includes a contact part, with which a side surface of a butterfly valve that is opposed to the bearing member is in contact, on at least a part of the surface of the bearing member on the chamber-side. The bearing member is a radial ball bearing and includes an outer bearing ring that is fitted to an inner periphery of a shaft hole, so that its axial displacement relative to a body is restricted, an inner bearing ring that is fitted on an outer periphery of a rotation shaft radially inward of the outer bearing ring, and a rolling element disposed between the outer bearing ring and the inner bearing ring. The contact part is provided on a surface of the inner bearing ring on the chamber-side.

公开(公告)号：US11092086B2

公开(公告)日：2021-08-17

申请号：US16992182

申请日：2020-08-13

Applicant: DENSO DAISHIN CORPORATION ,  DENSO CORPORATION

Inventor： Koshiro Miwa ,  Yasushi Kawano ,  Kenichi Ishihara ,  Tohru Shimizu ,  Yuta Fujinaka

IPC: F02D9/10 ,  F02D11/10

Abstract: A throttle valve device includes a body, a valve, a motor, a speed reducer, and a cover. The body that defines a passage and a motor space therein. The motor includes a motor yoke, a magnet, a motor shaft, a pair of motor bearings, an armature core, a commutator, a brush, and a brush holder. The motor yoke is made of a magnetic material. The brush holder holds the brush. The motor yoke has an open end that is covered by the brush holder.

公开(公告)号：US09976492B2

公开(公告)日：2018-05-22

申请号：US14994222

申请日：2016-01-13

Applicant: DENSO CORPORATION

Inventor： Takuma Uchida ,  Akira Higuchi ,  Yasushi Kawano

IPC: F16K31/04 ,  F02D9/02 ,  F16K1/22 ,  F02D9/10

CPC classification number: F02D9/02 ,  F02D9/105 ,  F02D9/106 ,  F16K1/22 ,  F16K1/221 ,  F16K1/54 ,  F16K31/043

Abstract: A housing defines a bore in a tubular shape to draw intake air to an engine. A shaft is supported rotationally relative to the housing. A valve is located in the bore and affixed to the shaft. An electric actuator is configured to rotate one end of the shaft. A load generating unit is configured to apply a biasing load onto the shaft from the one end of the shaft toward the bore in a high-temperature state in which a temperature is higher than a predetermined temperature.

公开(公告)号：US11867309B2

公开(公告)日：2024-01-09

申请号：US16992173

申请日：2020-08-13

Applicant: DENSO DAISHIN CORPORATION ,  DENSO CORPORATION

Inventor： Makoto Uno ,  Yasushi Kawano ,  Kenichi Ishihara ,  Tohru Shimizu ,  Yuta Fujinaka

IPC: F16K3/04 ,  F02D9/10 ,  F02M26/70 ,  F02M26/72 ,  H02K7/00 ,  H02K7/08 ,  F02M26/54 ,  F16K31/04

CPC classification number: F16K31/04 ,  F02D9/1005 ,  F02D9/1035 ,  F02D9/1065 ,  F02M26/54 ,  F02M26/70 ,  F02M26/72 ,  H02K7/003 ,  H02K7/08 ,  F16K31/047

Abstract: A throttle valve device includes a body, a valve, a motor, and a cover. The body defines a passage, a motor space, and a connecting portion that connects the motor space to the passage. The motor includes a motor yoke made of a magnetic material, a plurality of magnets that are arranged on an inner circumferential surface of the motor yoke. The plurality of magnets are magnetized in a state where the motor yoke is disposed in the motor space of the body. The plurality of magnets are arranged in a circumferential direction in the motor yoke with a space. The connecting portion is aligned with the space between the plurality of magnets in a radial direction of the motor yoke.