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公开(公告)号：US20240084853A1
公开(公告)日：2024-03-14
申请号：US17767891
申请日：2020-10-08
Applicant: NTN CORPORATION
Inventor： Takayuki KAWAMURA , Ryouta KONDOU , Makoto SEKI , Susumu YAMAJI
IPC: F16C33/66 , C10M107/02 , C10M115/08 , C10M169/02 , F16C19/18
CPC classification number: F16C33/6633 , C10M107/02 , C10M115/08 , C10M169/02 , F16C19/183 , F16C2326/02
Abstract: To provide an axle bearing having a low torque property and superior bearing lifetime. A hub bearing 6 is configured to rotatably support a wheel of a vehicle, and has a grease composition 10 sealed in an inner space thereof. The grease composition 10 contains a base oil and a thickener. The shear stress of the grease composition at the shear rate of 1,000-10,000 s−1 at 25° C. is 3,000 Pa or less. The viscosity of the grease composition is 1 Pas or less. The yield stress of the grease composition at 25° C. measured by a dynamic viscoelasticity analysis method using a rheometer is 1,300-3,000 Pa.
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公开(公告)号：US20170144483A1
公开(公告)日：2017-05-25
申请号：US15424803
申请日：2017-02-04
Applicant: NTN Corporation
Inventor： Kazuhisa SHIGEOKA , Hiroto SUMA , Kentarou NISHIKAWA , Makoto SEKI
CPC classification number: B60B35/18 , B60B27/00 , B60B27/0015 , B60B27/0047 , B60B2900/131 , B60B2900/133 , F16C19/186 , F16C19/527 , F16C2326/02 , F16F15/02 , F16F15/1442
Abstract: A wheel bearing apparatus has an outer member, an inner member and double row rolling elements contained between outer raceway surfaces and inner raceway surfaces, respectively, of the outer member and the inner member. A vibration damping mechanism is mounted on a portion of the outer member or the inner member except at portions engaging with mating components.
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公开(公告)号：US20150231921A1
公开(公告)日：2015-08-20
申请号：US14700675
申请日：2015-04-30
Applicant: NTN Corporation
Inventor： Shinsuke HIRANO , Makoto SEKI
CPC classification number: B60B27/0005 , B60B27/0031 , B60B27/0036 , B60B27/0084 , B60B27/0094 , B60B2380/12 , B60B2380/73 , F16C19/08 , F16C19/186 , F16C33/586 , F16C35/063 , F16C2326/02 , F16D1/076 , F16D3/223 , F16D2003/22326 , F16D2250/0023 , F16D2250/0053
Abstract: A wheel bearing apparatus has a double row rolling bearing detachably united with a constant velocity universal joint. The double row rolling bearing has an outer member, an inner member, and double row rolling elements rollably disposed between the double row raceway surfaces of the outer member and inner member. The constant velocity universal joint has an outer joint member, a shoulder portion, and a shaft portion. A female thread is formed on the shaft portion. End faces of the shoulder portion and the caulked portion are formed with face splines, respectively. The face spline of the caulked portion has a portion where a tooth height of a tooth space of a portion radially outside the pitch circle diameter is set lower than that of other portions of the tooth space.
Abstract translation: 车轮轴承装置具有可拆卸地与等速万向接头组合的双列滚动轴承。 双列滚动轴承具有可滚动地设置在外部构件和内部构件的双列滚道表面之间的外部构件，内部构件和双列滚动元件。 等速万向接头具有外接头构件，肩部和轴部。 内螺纹形成在轴部上。 肩部和铆接部分的端面分别形成有面花键。 铆接部的面花键具有将节圆径径向外侧的部分的齿空间的齿高设定得低于齿空间的其他部分的齿高的部分。
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公开(公告)号：US20140010487A1
公开(公告)日：2014-01-09
申请号：US14020819
申请日：2013-09-07
Applicant: NTN Corporation
Inventor： Makoto SEKI , Yasuhiro ARITAKE , Tomoko BABA , Tadashi MITSUISHI
CPC classification number: B60B27/0005 , B60B7/0013 , B60B27/00 , B60B27/0073 , F16C19/186 , F16C33/583 , F16C33/64 , F16C33/723 , F16C33/76 , F16C33/768 , F16C33/783 , F16C41/007 , F16C43/045 , F16C2220/70 , F16C2240/40 , F16C2240/46 , F16C2240/56 , F16C2326/02
Abstract: A wheel bearing apparatus has a protecting cover formed from non-magnetic steel sheet with a cup-shaped configuration. The protective cover has a cylindrical fitting portion, a disk-shaped shield portion, a radially reducing portion, a stepped portion and a bottom portion. The cylindrical fitting portion is press-fit into the inner circumference of the inner-side end of the outer member. The disk-shaped shielding portion extends radially inward from the fitting portion, via the radially reducing portion. The inner-side surface of the shielding portion is arranged close to or in contact with a rotation speed detecting sensor. The bottom portion is continuous with the shielding portion, via the stepped portion to close the inner-side end of the inner member. A full deflection of the side surface of the shielding portion that is caused by a load the same as that applied to the protecting cover when it is press-fit into the outer member is limited to a predetermined value or less.
Abstract translation: 轮轴承装置具有由具有杯形构造的非磁性钢板形成的保护盖。 保护罩具有圆筒形的配合部分，盘形的屏蔽部分，径向减小部分，阶梯部分和底部部分。 圆筒形配合部压配合到外部构件的内侧端部的内周。 盘形屏蔽部分经由径向减小部分从配合部分径向向内延伸。 遮蔽部的内侧面与旋转速度检测传感器接近或接触。 底部与屏蔽部分相连通，经由阶梯部分封闭内部件的内侧端部。 当被压配合到外部构件中时，由与施加到保护盖上的负载相同的负载引起的屏蔽部分的侧表面的完全偏转被限制在预定值以下。
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Patent Agency Ranking
公开(公告)号：US20220403874A1
公开(公告)日：2022-12-22
申请号：US17774456
申请日：2020-11-02
Applicant: NTN CORPORATION
Inventor： Tomoya SAKAGUCHI , Naoto SHIBUYA , Makoto SEKI
Abstract: To provide a hub bearing that is capable of reducing a delay in a response of the hub bearing and improving a steering stability of a vehicle. A hub bearing 1 includes an outer ring 2 serving as a stationary side raceway ring, a hub wheel 3 and an inner ring 5 serving as a rotatable side raceway ring, balls 4 serving as a plurality of rolling elements disposed between a raceway surface of the stationary side raceway ring and a raceway surface of the rotatable side raceway ring, and grease that lubricates a rolling contact part between each of the raceway surfaces and the rolling elements. The surface roughness of at least one raceway surface selected from the raceway surface of the stationary side raceway ring and the raceway surface of the rotatable side raceway ring in the rolling contact part is 0.03 μmRa or less. Further, the grease has a traction coefficient in the rolling contact part of 0.04 or less at 40° C. when a vehicle speed is 20 km/h or more.
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公开(公告)号：US20170144482A1
公开(公告)日：2017-05-25
申请号：US15424796
申请日：2017-02-04
Applicant: NTN Corporation
Inventor： Kazuhisa SHIGEOKA , Hiroto SUMA , Kentarou NISHIKAWA , Makoto SEKI
CPC classification number: B60B35/18 , B60B27/00 , B60B27/0015 , B60B27/0047 , B60B2900/131 , B60B2900/133 , F16C19/186 , F16C19/527 , F16C2326/02 , F16F15/02 , F16F15/1442
Abstract: A wheel bearing apparatus has an outer member, an inner member and double row rolling elements contained between outer raceway surfaces and inner raceway surfaces, respectively, of the outer member and the inner member. A vibration damping mechanism is mounted on a portion of the outer member or the inner member except at portions engaging with mating components.
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公开(公告)号：US20200277993A1
公开(公告)日：2020-09-03
申请号：US16647271
申请日：2018-09-14
Applicant: NTN CORPORATION
Inventor： Makoto SEKI , Hisanori KOBAYASHI
Abstract: A sealing member of a bearing device for vehicle wheel including: a sealing plate having a sealing plate fitting section (7a) fitted to an inner circumferential surface of an outer ring, an annular support section (7c) extending radially inwardly from the sealing plate fitting section, and sealing lips provided on one side surface of the support section; and a slinger (8) having a slinger fitting section (8a) fitted to the outer circumferential surface of an inner ring (4) and an annular upright plate section (8b) extending radially outwardly from the slinger fitting section and facing the support section. The plurality of sealing lips are in contact with one side surface of the upright plate section or with the slinger fitting section, the support section is bent to form an annular groove section, and the outer peripheral portion of the upright plate section is bent to form a cylindrical wall section.
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公开(公告)号：US20200109745A1
公开(公告)日：2020-04-09
申请号：US16497033
申请日：2018-03-23
Applicant: NTN CORPORATION
Inventor： Makoto SEKI
Abstract: A bearing device for vehicle wheel includes a sealing ring (71) that includes: a core bar (72) and sealing rubber (73). The sealing rubber (73) includes: a first sealing lip (73b) that is formed to the radial-direction outside of the fitting part (72a) and has a tip end part that is in sliding contact with a sealing plane part (3h); and a second sealing lip (73c) that is formed to the radial-direction inside of the fitting part (72a) and has a tip end part that is in sliding contact with the sealing plane part (3h). A flat surface (73e) that can be contacted by a press-fitting tool (P) and by the tip end part of the fitting part (72a) of another bearing device for vehicle wheel is formed between the first sealing lip (73b) and the second sealing lip (73c).
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公开(公告)号：US20200025243A1
公开(公告)日：2020-01-23
申请号：US16494018
申请日：2018-03-14
Applicant: NTN CORPORATION
Inventor： Makoto SEKI
IPC: F16C19/38
Abstract: This bearing device (1) for vehicle wheels comprises: an inner undercut part (8) provided in a portion at which an inner rolling surface (3d) formed on the inner side of an inner member (3) and an inner flange surface (3m) of the inner rolling surface (3d) intersect; an outer undercut part (9) provided in a portion at which an inner rolling surface (3c) formed on the outer side of the inner member (3) and an outer flange surface (3n) of the inner rolling surface (3c) intersect; and a vehicle wheel installation flange (3e) provided at a portion adjacent to the inner rolling surface (3c) formed on the outer side of the inner member (3), wherein, when the radius of curvature of the inner undercut part (8) is Ri, and the radius of curvature of the outer undercut part (9) is Ro, the relationship of Ri
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