公开(公告)号：US20240133468A1

公开(公告)日：2024-04-25

申请号：US18277945

申请日：2021-12-16

Applicant: Hitachi Astemo, Ltd.

Inventor： Shoichi ICHIKAWA ,  Daiki TSUTSUMI ,  Toshiyuki MASUDA ,  Kenichiro ISHIKURA

IPC: F16J15/52 ,  F16C3/02 ,  F16C33/76

CPC classification number: F16J15/52 ,  F16C3/02 ,  F16C33/76 ,  B60K17/22

Abstract: A water-impermeable cover includes an opening part extending toward an opening part of a holding ring of a stub shaft of a propeller shaft, and is disposed to face the opening part of the holding ring. The water-impermeable cover is fixed at a position to face the opening part of the holding ring of the stub shaft, and the opening part of the water-impermeable cover extends to approach the opening part of the holding ring: therefore, even if muddy water etc. scatters obliquely toward the opening part of the holding ring, the risk of muddy water etc. entering the opening part of the holding ring is reduced, and as a result, also the risk of muddy water etc. entering an interior of a center bearing is reduced.

公开(公告)号：US20240151273A1

公开(公告)日：2024-05-09

申请号：US18549241

申请日：2021-12-16

Applicant: Hitachi Astemo, Ltd.

Inventor： Shoichi ICHIKAWA ,  Daiki TSUTSUMI ,  Toshiyuki MASUDA ,  Kenichiro ISHIKURA

IPC: F16D3/06 ,  B60K17/22 ,  F16D3/38

CPC classification number: F16D3/06 ,  F16D3/387 ,  B60K17/22 ,  F16D2300/08

Abstract: As a stopper for restricting movement of a rotary shaft 31 of a transmission device 3 and a shaft part 41 of a first drive-side joint member J11 in a direction of approaching each other, a stopper part 5 is formed separately from the shaft part 41 and a yoke body part 42 of the first drive-side joint member so that the stopper function of the first drive-side joint member J11 is guaranteed by the separately-formed stopper part 5 in the present invention. With this configuration, a change in the gravity center position of the first drive-side joint member caused due to build-up processing on the shaft part or the yoke body part is suppressed. It is possible to restrict relative movement of the first drive-side joint member and the rotary shaft while ensuring adequate machining for formation of a shaft-part-side seal surface on the first drive-side joint member.

公开(公告)号：US20240229936A9

公开(公告)日：2024-07-11

申请号：US18277945

申请日：2021-12-16

Applicant: Hitachi Astemo, Ltd.

Inventor： Shoichi ICHIKAWA ,  Daiki TSUTSUMI ,  Toshiyuki MASUDA ,  Kenichiro ISHIKURA

IPC: F16J15/52 ,  F16C3/02 ,  F16C33/76

CPC classification number: F16J15/52 ,  F16C3/02 ,  F16C33/76 ,  B60K17/22

Abstract: A water-impermeable cover includes an opening part extending toward an opening part of a holding ring of a stub shaft of a propeller shaft, and is disposed to face the opening part of the holding ring. The water-impermeable cover is fixed at a position to face the opening part of the holding ring of the stub shaft, and the opening part of the water-impermeable cover extends to approach the opening part of the holding ring: therefore, even if muddy water etc. scatters obliquely toward the opening part of the holding ring, the risk of muddy water etc. entering the opening part of the holding ring is reduced, and as a result, also the risk of muddy water etc. entering an interior of a center bearing is reduced.

公开(公告)号：US20250052284A1

公开(公告)日：2025-02-13

申请号：US18723767

申请日：2022-12-14

Applicant: HITACHI ASTEMO, LTD.

Inventor： Shoichi ICHIKAWA ,  Daiki TSUTSUMI ,  Toshiyuki MASUDA ,  Kenichiro ISHIKURA

IPC: F16D3/38 ,  B60K17/22

Abstract: A propeller shaft for transmitting driving force of a vehicle includes a first shaft unit mounted to the vehicle via a vehicle mounting member. The first shaft unit includes a sleeve yoke, a stub shaft, and a tube. The sleeve yoke is connected to an output shaft of a transmission of the vehicle, and receives the driving force via the output shaft. The stub shaft is disposed oppositely to the sleeve yoke in a direction of a rotational axis of the first shaft unit. The tube connects the sleeve yoke and the stub shaft. The stub shaft includes a weakest part structured to be less in torsional strength than a remaining part of the first shaft unit and formed at a position at which the stub shaft overlaps with the vehicle mounting member in the direction of the rotational axis.

公开(公告)号：US20210372482A1

公开(公告)日：2021-12-02

申请号：US17291048

申请日：2019-10-30

Applicant: Hitachi Astemo, Ltd.

Inventor： Daiki TSUTSUMI ,  Yasushi AKITA ,  Kenichiro ISHIKURA

IPC: F16D1/10 ,  F16D3/06 ,  F16C3/03

Abstract: In a propeller shaft, a crowning portion of a male spline portion is provided in a predetermined range including a front end portion in an axial direction, and a tooth tip surface is shaped in such a manner that a tooth thickness thereof gradually increases from the front end portion toward an intermediate portion of the male spline portion in the axial direction.