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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
申请人： Hitachi Astemo, Ltd.
摘要： 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：US20230099595A1
公开(公告)日：2023-03-30
申请号：US17908309
申请日：2021-03-02
申请人： HITACHI ASTEMO, LTD.
发明人： Xiaojin ZHU , Kenichiro ISHIKURA
摘要： In a coupling structure for a propeller shaft and a propeller shaft, a propeller shaft-side adapter includes: a flange portion of the propeller shaft-side adapter extending in a radial direction relative to a rotation axis of a rotation shaft, and connected to a flange portion of a vehicle-side adapter; a center pin accommodating portion formed on the rotation axis, and into which a center pin provided to the vehicle-side adapter is inserted; and an inner peripheral portion formed between the flange portion of the propeller shaft-side adapter and the center pin accommodating portion in the radial direction relative to the rotation axis, which is opposed to the vehicle-side adapter in a direction of the rotation axis, and in which a distance from the rotation axis in the radial direction relative thereto decreases extending away from the flange portion of the vehicle-side adapter in the rotation axis direction.
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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
申请人： Hitachi Astemo, Ltd.
CPC分类号： F16D3/06 , F16D3/387 , B60K17/22 , F16D2300/08
摘要： 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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公开(公告)号：US20230047822A1
公开(公告)日：2023-02-16
申请号：US17977955
申请日：2022-10-31
申请人： HITACHI ASTEMO, LTD.
发明人： Yasutomo MABE , Kiyokazu NAKANE , Hiromichi KOMAI , Xiaojin ZHU , Toshiyuki MASUDA , Kenichiro ISHIKURA
摘要： 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：US20220340003A1
公开(公告)日：2022-10-27
申请号：US17641353
申请日：2020-09-03
申请人： HITACHI ASTEMO, LTD.
发明人： Hidekazu AOKI , Kenichiro ISHIKURA
摘要： A propeller shaft includes an outer ring member having a bottom section through which a vent hole is formed, on a first end part connected to a shaft member. The propeller shaft further includes an inner ring member provided to the inner peripheral side of a second end part of the outer ring member on the side axially opposite to the first end part and connected to a rod member; a ball member between the inner and outer ring members, which is lubricated by grease; a plate member attached to the inner peripheral part of the outer ring member and forming an auxiliary chamber with the bottom section; and a communication path. The communication path allows communication between the first end part side and the second end part side of the outer ring member with the plate member interposed therebetween.
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公开(公告)号：US20240301920A1
公开(公告)日：2024-09-12
申请号：US18549449
申请日：2022-01-14
申请人： HITACHI ASTEMO, LTD.
发明人： Masashi KUBO , Kenichiro ISHIKURA
IPC分类号： F16D3/40
CPC分类号： F16D3/40
摘要： In the present invention, a first arm outer edge chamfered portion (115) and a second arm outer edge chamfered portion (125) are formed along both side edges on an outer side of each of a first arm base portion (111) and a second arm base portion (121). With this structure, it is possible to reduce a radius (radii) of rotation of a first arm portion (11) and a second arm portion (12) of a first yoke (1), then layout property of the first yoke (1) and a propeller shaft using this first yoke (1) can be increased.
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公开(公告)号：US20230272823A1
公开(公告)日：2023-08-31
申请号：US18043698
申请日：2021-09-15
申请人： Hitachi Astemo, Ltd.
IPC分类号： F16D3/41
CPC分类号： F16D3/41 , F16D2300/06
摘要： A universal joint includes: a yoke; cups; a cross shaft; a plurality of needles; washers each including; a washer main body portion which has a circular plate shape, and which is disposed between one of the cup bottom portions, and one of the shaft portions, a needle side raised portion which has an annular shape, which is integrally formed on an outer circumference side of one of the washer main body portion, and which protrudes toward the needle side, and a cup bottom portion side raised portion which has an annular shape, which is integrally formed on the outer circumference side of the one of the washer main body portions, and which protrudes toward the cup bottom portion side.
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公开(公告)号：US20210372482A1
公开(公告)日：2021-12-02
申请号：US17291048
申请日：2019-10-30
申请人： Hitachi Astemo, Ltd.
摘要： 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.
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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
申请人： HITACHI ASTEMO, LTD.
摘要： 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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公开(公告)号：US20240229936A9
公开(公告)日：2024-07-11
申请号：US18277945
申请日：2021-12-16
申请人： Hitachi Astemo, Ltd.
摘要： 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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