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1. 发明公开

EP4411175A1 FEED SCREW MECHANISM AND ELECTRIC ACTUATOR 审中-实审
公开(公告)号：EP4411175A1
公开(公告)日：2024-08-07
申请号：EP22875744.9
申请日：2022-09-07
申请人： NTN Corporation
发明人： OKU Yuta , KATO Akio , SAKAI Kayo
IPC分类号： F16H25/24 , H02K7/06
CPC分类号： H02K7/06 , F16H25/24
摘要： A feed screw mechanism (30) includes: a rotary member (31) having a female screw portion (31a) on an inner peripheral surface; a linear motion member (32) having, on an outer peripheral surface, a male screw portion (32a) that is directly or indirectly screwed to the female screw portion (31a) and making a linear motion with rotation of the rotary member (31); a lubricant housed between the female screw portion (31a) and the male screw portion (32a); a housing (5) that houses the rotary member (31) and the linear motion member (32); and a wall portion (36) protruding, in a radial direction, from the outer peripheral surface of the linear motion member (32). The wall portion (36) makes a linear motion together with the linear motion member (32), and an outer radial end portion of the wall portion (36) is disposed: so as not to contact the inner peripheral surface of the housing (5) and a member provided on the inner peripheral surface of the housing (5); or so as to be slidable with respect to the inner peripheral surface of the housing (5) or the member provided on the inner peripheral surface of the housing (5).

2. 发明公开

EP4407015A1 GREASE COMPOSITION AND GREASE-SEALED BEARING 审中-实审
公开(公告)号：EP4407015A1
公开(公告)日：2024-07-31
申请号：EP22872873.9
申请日：2022-09-20
申请人： NTN Corporation
发明人： KAWAMURA, Takayuki
IPC分类号： C10M141/08 , C10N10/04 , C10N30/06 , C10N40/00 , C10N40/02 , C10N50/10 , F16C19/06 , C10N10/02 , C10N10/12
CPC分类号： F16C19/06 , C10N2050/1020130101 , C10M2201/06220130101 , C10N2010/0220130101 , C10N2010/1220130101 , C10M2207/28320130101 , C10M2219/04420130101 , C10N2010/0420130101 , C10M2215/102620130101 , C10M2205/02820130101 , C10N2040/0220130101 , C10M2207/040620130101 , C10M2207/280520130101 , C10M2219/04620130101 , C10M2219/06820130101 , C10N2030/0620130101 , C10M141/08
摘要： To provide a grease composition that is capable of effectively suppressing an early-flaking due to hydrogen embrittlement, and to provide a grease-sealed bearing in which the grease composition is sealed. A grease composition 7 contains a base oil, a thickener, and an additive. The additive contains sodium molybdate as an essential component, and sorbitan-based ester or metal sulfonate. The metal sulfonate is Ca sulfonate or Zn sulfonate. The content of the metal sulfonate is less than 3 parts by mass relative to 100 parts by mass of a total of the base oil and the thickener.

3. 发明公开

EP4406815A1 STEER-BY-WIRE STEERING SYSTEM 审中-实审
公开(公告)号：EP4406815A1
公开(公告)日：2024-07-31
申请号：EP22872801.0
申请日：2022-09-14
申请人： NTN Corporation
发明人： SATO Koji
IPC分类号： B62D5/04
CPC分类号： B62D5/04 , B62D5/005 , B62D5/006
摘要： A steer-by-wire type steering system is provided in which a steering actuator changes the direction of steered parts based on the operation amount of a steering wheel detected by a steering sensor; in which when the direction of the steered parts reaches the stroke end, the driver can reliably perceive this situation via the steering wheel; and in which even while no electric power is being supplied, the steering wheel can be locked. The steer-by-wire type steering system includes a shaft (4) coupled to the steering wheel so as to rotate in unison with the steering wheel; an outer ring (21) having an inner periphery disposed around the shaft (4); engagement elements (24) disposed between the shaft (4) and the inner periphery of the outer ring (21); a cage (25) retaining the engagement elements (24), and disposed to be circumferentially movable between an engagement position where the engagement elements (24) are engaged with the shaft (4) and the inner periphery of the outer ring (21), and a disengagement position where the engagement elements (24) are disengaged from the shaft (4) and the inner periphery of the outer ring (21); a centering spring (26) that elastically retains the cage (25) at the disengagement position, and that is rotationally fixed to the shaft (4) and the cage (25) so as to rotate in unison with the shaft (4); and a non-excited operation type electromagnetic brake (27) that brakes the cage (25).

4. 发明公开

EP4397877A1 TRIPOD-TYPE CONSTANT VELOCITY UNIVERSAL JOINT 审中-实审
公开(公告)号：EP4397877A1
公开(公告)日：2024-07-10
申请号：EP22864219.5
申请日：2022-08-10
申请人： NTN Corporation
发明人： ITAGAKI Taku
IPC分类号： F16D3/205 , F16D3/20
CPC分类号： F16D3/20 , F16D3/205
摘要： In a tripod type constant velocity universal joint of a double roller type, a projection 40 is provided in regions including both end portions in a direction orthogonal to a joint axial line O on a shaft end side with respect to an inner ring 12 on an outer peripheral surface of a leg shaft 32 of a tripod member 3. A ratio T/ag1 between a dimension T in a direction of the joint axial line O of the projection 40 and a major diameter ag1 of a contact portion with the inner ring on the outer peripheral surface of the leg shaft 32 is 0.3 or more.

5. 发明公开

EP4397876A1 TRIPOD-TYPE CONSTANT VELOCITY UNIVERSAL JOINT 审中-实审
公开(公告)号：EP4397876A1
公开(公告)日：2024-07-10
申请号：EP22864216.1
申请日：2022-08-10
申请人： NTN Corporation
发明人： ITAGAKI Taku
IPC分类号： F16D3/20 , F16D3/205
CPC分类号： F16D3/20 , F16D3/205
摘要： In a tripod type constant velocity universal joint 1 of a double roller type, a carbon content in a core portion of a tripod member 3 is set to 0.23 to 0.44%, and a hardened layer 16 of a carburized layer is provided on the surface of a leg shaft 32. A first region P having a radius of curvature Ra in a cross section in a direction orthogonal to a joint axial direction including an axial line of the leg shaft 32 and a second region Q having a radius of curvature Rb in a cross section in the joint axial direction including the axial line of the leg shaft 32 are provided in an intermediate portion 33 provided between a body portion 31 of the tripod member 3 and the leg shaft 32. Ra > Rb is set.

6. 发明公开

EP4365442A1 MOBILE STRUCTURE, AND STRUCTURAL UNIT 审中-实审
公开(公告)号：EP4365442A1
公开(公告)日：2024-05-08
申请号：EP22832969.4
申请日：2022-06-22
申请人： NTN Corporation
发明人： KARASAWA, Ryosuke , MATSUURA, Fumihiko
IPC分类号： F03D9/32
CPC分类号： F03D9/32
摘要： Provided is a mobile structure that can be used even in non-electrified areas or the like and can suppress noise in a desired space inside the structure. The mobile structure includes: a structure (4) having a box-like shape, the structure being movable and having a space (S1) inside for at least one of living, office duties, work, rest, business, and medical services; a wind turbine generator (30) supported on the structure (4); and a power supply mechanism (2) configured to supply power generated by the wind turbine generator (30) to electrical equipment (53) provided to the structure (4). The structure (4) has a storage (M) inside, the storage housing the power supply mechanism (2). The storage (M) faces an inner surface of the peripheral wall (13) of the structure (4) on which the wind turbine generator (30) is supported. In addition, the structure (4) includes a partition wall (51) inside, the partition wall partitioning the storage (M) from the space (S1).

7. 发明公开

EP4357736A1 ANGLE DETECTING DEVICE 审中-实审
公开(公告)号：EP4357736A1
公开(公告)日：2024-04-24
申请号：EP22824880.3
申请日：2022-06-08
申请人： NTN Corporation
发明人： KOIKE, Takashi , FUKUSHIMA, Yasuyuki
IPC分类号： G01D5/245 , B25J19/02 , G01D5/244
CPC分类号： B25J19/02 , G01D5/245 , G01D5/244
摘要： An angle detecting device (4) includes: an encoder unit (6) having a magnetic track on which N poles and S poles are alternately arrayed; and a magnetic sensor (7) facing the magnetic track with a gap interposed therebetween. The magnetic track has, when being expressed with a reference magnetic pole width (P) and a reference magnetic pole pair number (n), a main track (2) having a magnetic pole width of (P) and a sub track (3) having a magnetic pole width of (Pn/(n-1)), the main track (2) and the sub track (3) being provided adjacent and parallel to each other along a longitudinal direction of a sheet-shaped encoder magnetic material (1). The encoder unit (6) is formed of the sheet-shaped encoder magnetic material (1) which has a length not larger than a reference length (L=2Pn) and which is wound around and fixed to an outer circumference portion or an inner circumference portion of a rotary body (5). The angle detecting device (4) further includes a correction calculator (10) configured to multiply an absolute angle calculated by a calculator (9) of the magnetic sensor (7) by a correction coefficient based on a diameter of the encoder unit (6), to correct the absolute angle of the rotary body.

8. 发明公开

EP4286703A1 CLUTCH UNIT 审中-实审转让
公开(公告)号：EP4286703A1
公开(公告)日：2023-12-06
申请号：EP22745925.2
申请日：2022-01-26
申请人： Shiroki Corporation , NTN Corporation
发明人： MIKASA, Kunihiro , HIBI, Yasumasa , SASANUMA, Kyohei , BIAN, Shaoluan
IPC分类号： F16D63/00 , F16D67/02 , F16D65/16 , F16D121/16 , F16D127/06 , F16D127/10 , F16D43/02 , F16D41/06 , F16D41/067 , F16D41/10
摘要： Provided is a clutch unit in which an output-side outer ring member is attached to a base plate without welding. A clutch unit (100) includes an output-side clutch (60) and a housing (11) that accommodates the output-side clutch (60). The output-side clutch (60) includes an output-side outer ring member (62). The output-side outer ring member (62) and the housing (11) have an engagement protrusion (62s) and an engagement groove (11s) that engage with each other to restrict relative rotation therebetween.

9. 发明公开

EP4286250A1 HUB UNIT WITH STEERING FUNCTION, STEERING SYSTEM, AND VEHICLE 无效
公开(公告)号：EP4286250A1
公开(公告)日：2023-12-06
申请号：EP22745789.2
申请日：2022-01-24
申请人： NTN Corporation
发明人： OOBA, Hirokazu , OHATA, Yusuke
IPC分类号： B62D7/09 , B62D5/04 , B60B35/14
摘要： Provided is a hub unit (1) with a steering function. The hub unit (1) includes a hub bearing assembly (3) including a hub bearing (21) configured to rotatably support a wheel (13) of a vehicle (11), a unit support member (5) configured to be coupled to a suspension system (33) and supporting the hub bearing assembly (3), and a rotation-permitting support member (7) rotatably supporting the hub bearing assembly (3), about a turning axis (A) that extends in a vertical direction, on the unit support member (5). The hub bearing (21) is configured to be coupled with a driveshaft (53) that transmits drive power from a drive source of the vehicle (11).

10. 发明公开

EP4265932A1 CLUTCH UNIT 无效
公开(公告)号：EP4265932A1
公开(公告)日：2023-10-25
申请号：EP21906524.0
申请日：2021-12-10
申请人： NTN Corporation , Shiroki Corporation
发明人： SASANUMA, Kyohei , MIKASA, Kunihiro
IPC分类号： F16D41/066 , F16D41/08 , B60N2/16
摘要： Provided is a clutch unit (1) including: a static system (housing (40)); an output shaft (30); a first clutch part (10); and a second clutch part (20). The first clutch part (10) includes: an input rotary body including an inner ring (13); an output rotary body including an outer ring (14); and a plurality of cylindrical rollers (15) disposed therebetween. The clutch unit (1) includes: a rotation suppressing member (70) configured to apply rotational resistance to the output rotary body of the first clutch part (10); and rotation stopping mechanisms (80) (recessed portions (71) of the rotation suppressing member (70) and extending portions (41) of the housing (40)) configured to restrict rotation of the rotation suppressing member (70) with respect to the housing (40).

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