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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20230047822A1
公开(公告)日：2023-02-16
申请号：US17977955
申请日：2022-10-31
Applicant: HITACHI ASTEMO, LTD.
Inventor： Yasutomo MABE , Kiyokazu NAKANE , Hiromichi KOMAI , Xiaojin ZHU , Toshiyuki MASUDA , Kenichiro ISHIKURA
Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1) .
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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
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.
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公开(公告)号：US20230332638A1
公开(公告)日：2023-10-19
申请号：US17788051
申请日：2020-12-23
Applicant: HITACHI ASTEMO, LTD.
Inventor： Kenichiro ISHIKURA , Xiaojin ZHU , Toshiyuki MASUDA
CPC classification number: F16C3/023 , B60K17/22 , F16D1/076 , F16D3/06 , F16C2226/80
Abstract: A propeller shaft (PS) has a balance piece (9) on the outer peripheral side of a stub shaft body section (31) of a stub shaft (3), which is axially separated from both spline sections (25, 34), which are spline fitting sections. Due to this configuration, changes in the gap in both spline sections (25, 34) when the balance piece (9) is welded are minimized, and the occurrence of new rotational imbalance can be minimized. As a result, rotational imbalance in the propeller shaft (PS) due to the balance piece (9) can be corrected appropriately and easily.
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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
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.
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公开(公告)号：US20220349447A1
公开(公告)日：2022-11-03
申请号：US17634099
申请日：2020-07-30
Applicant: HITACHI ASTEMO, LTD.
Inventor： Shinichi SATO , Toshiyuki MASUDA , Kenichiro ISHIKURA
Abstract: A propeller shaft includes: a cylindrical boot member including a protruding portion, and a boot band tightening portion; a shaft member which is inserted into the boot member, and which includes a first diameter portion having an outside diameter greater than an inside diameter of the protruding portion, a groove portion which has an outside diameter smaller than the outside diameter of the first outside diameter portion, and in which the protruding portion is received, and a second outside diameter portion having an outside diameter greater than the outside diameter of the first outside diameter portion; and a boot band tightened on the boot band tightening portion.
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