公开(公告)号：US20220260172A1

公开(公告)日：2022-08-18

申请号：US17736294

申请日：2022-05-04

Applicant: DENSO CORPORATION

Inventor： Ryo NOUMURA

IPC: F16K31/04

Abstract: A shaft end section of a shaft is inserted into a receiving hole of a shaft receiver of a gear arrangement. An outer periphery, which forms an outer periphery of the shaft end section, has an end section flat surface portion and an end section curved surface portion. A receiving hole inner periphery, which forms an inner periphery of the receiving hole, has a receiving hole flat surface portion and a receiving hole curved surface portion. The shaft end section is press-fitted such that the receiving hole flat surface portion contacts at least a part of the end section flat surface portion, and the receiving hole curved surface portion contacts at least a part of the end section curved surface portion, while a central axis of the shaft end section overlaps with a central axis of the receiving hole.

公开(公告)号：US20170342914A1

公开(公告)日：2017-11-30

申请号：US15524728

申请日：2015-12-15

Applicant: DENSO CORPORATION

Inventor： Ryo NOUMURA ,  Yasushi KAWANO ,  Tohru SHIMIZU

IPC: F02D9/10 ,  F16K1/32 ,  F16K1/22

CPC classification number: F02D9/10 ,  F02D9/106 ,  F02D11/10 ,  F16C19/06 ,  F16C19/10 ,  F16C19/52 ,  F16C21/00 ,  F16C33/783 ,  F16C33/7889 ,  F16C2361/91 ,  F16K1/22 ,  F16K1/224 ,  F16K1/2268 ,  F16K1/32

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.