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1. 发明授权

US11359676B2 Fixed-type constant velocity universal joint 有权
公开(公告)号：US11359676B2
公开(公告)日：2022-06-14
申请号：US16494372
申请日：2018-03-08
申请人： NTN CORPORATION
发明人： Tomoshige Kobayashi , Masazumi Kobayashi
IPC分类号： F16D3/224 , F16D3/2245 , F16D3/223
摘要： A fixed type constant velocity universal joint (3) includes an outer joint member (31), an inner joint member (32), eight balls (33), and a cage (34). A diameter (D31c) of the outer joint member (31) at an opening end of an inner peripheral surface (31c) is set larger than an outer diameter (D34b) of the cage (34) at a center portion in a circumferential direction of pockets (34a) when the cage (34) is seen from an axial direction of the joint. A bottom surface (31f) of a mouth section (31a) of the outer joint member (31) is arranged so as to interfere with an imaginary spherical surface (Q) being an extension of the inner peripheral surface (31c) of the outer joint member (31) toward a deep-side.

2. 发明授权

US11326649B2 Rear-wheel drive shaft 有权
公开(公告)号：US11326649B2
公开(公告)日：2022-05-10
申请号：US16494376
申请日：2018-03-08
申请人： NTN CORPORATION
发明人： Masazumi Kobayashi , Tomoshige Kobayashi
IPC分类号： F16D3/223 , F16D3/2245 , F16C3/02 , F16D3/227
摘要： A rear-wheel drive shaft (1) includes a fixed type constant velocity universal joint (3), a plunging type constant velocity universal joint (2), and an intermediate shaft (4) coupling both the constant velocity universal joints to each other. A ratio (PCDBALL(f)/DBALL(f)) of a pitch circle diameter (PCDBALL(f)) of balls (33) of the fixed type constant velocity universal joint (3) to a diameter (DBALL(f)) of each of the balls (33) is set from 3.70 to 3.87. A ratio (PCDBALL(s)/DBALL(s)) of a pitch circle diameter (PCDBALL(s)) of balls (23) of the plunging type constant velocity universal joint (2) to a diameter (DBALL(s)) of each of the balls (23) is set from 3.3 to 3.6.

3. 发明申请

US20210140489A1 SPLINE STRUCTURE, SPEED-REDUCING OR -INCREASING APPARATUS, AND CONSTANT-VELOCITY JOINT 有权
公开(公告)号：US20210140489A1
公开(公告)日：2021-05-13
申请号：US16635971
申请日：2018-07-17
申请人： THK CO., LTD.
发明人： Hideo SAITO , Yuichi MIZUTANI , Kotaro KUSHIDA
IPC分类号： F16D3/2245 , F16H57/00
摘要： Provided is a spline structure with which contact surface area between an outer-side member and balls can be ensured, and contact surface area between an inner-side member and the balls can be ensured. This spline structure is provided with an outer-side member having a first track groove on the inner surface, an inner-side member having a second track groove on the outer surface, and balls disposed between the first track groove and the second track groove so as to allow the inner-side member to be inclined relative to the outer-side member. A bottom part extending along the length direction of the first track groove has a linear shape. A bottom part extending along the length direction of the second track groove has a concave curved shape.

4. 发明授权

US10508692B2 Propeller shaft and propeller shaft production method 有权
公开(公告)号：US10508692B2
公开(公告)日：2019-12-17
申请号：US15408530
申请日：2017-01-18
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Yasutomo Mabe , Hiromichi Komai
IPC分类号： F16D3/223 , F16D3/84 , F16D1/116 , F16D3/2245 , F16D1/10
摘要： Apparatus, such as a propeller shaft, includes an outer circumferential portion or outer race to rotate as a unit with an internal shaft (serving as the propeller shaft), an inner circumferential member or inner race to rotate as a unit with an external shaft and a plurality of balls disposed between the outer race and inner race, for transmitting rotation therebetween. A sleeve rotating as a unit with the inner race includes an inside cavity for receiving the external shaft. The sleeve is coated with a coating formed on an inside circumferential surface.

5. 发明授权

US10309464B2 Fixed constant velocity universal joint 有权
公开(公告)号：US10309464B2
公开(公告)日：2019-06-04
申请号：US15124934
申请日：2015-03-12
申请人： NTN CORPORATION
发明人： Tomoshige Kobayashi , Mika Kohara , Teruaki Fujio
IPC分类号： F16D3/223 , F16D3/2245
摘要： A fixed type constant velocity universal joint includes an outer joint member having eight curved track grooves, an inner joint member having eight curved track grooves, eight torque transmission balls, and a cage configured to hold the torque transmission balls in pockets. A curvature center of each of the track grooves of the outer joint member and a curvature center of each of the track grooves of the inner joint member are offset from a joint center by an equal distance to opposite sides in the axial direction. The joint has grease sealed therein. Initial pocket gaps between the pockets and the balls each have a positive value. The grease has an initial consistency equivalent to consistency number 1 or 2, and a mixture stability of from 390 to 440.

6. 发明申请

US20180252271A1 BENT-AXIS HYDRAULIC PUMP MOTOR 审中-公开
公开(公告)号：US20180252271A1
公开(公告)日：2018-09-06
申请号：US15756228
申请日：2015-09-30
申请人： Komatsu Ltd.
发明人： Seita Hayashi , Takuya Miyata
IPC分类号： F16D3/2245 , F16D3/24 , F04B1/24
CPC分类号： F16D3/2245 , F03C1/0642 , F04B1/24 , F16D3/224 , F16D3/24 , F16D2003/22303 , F16D2003/22309 , F16D2300/10
摘要： A bent-axis hydraulic pump motor includes: a cylinder block, a retainer plate; and a constant velocity joint, which includes an inner joint element; an outer joint element; and a plurality of balls interposed between block-side ball grooves and shaft-side ball grooves to transmit torque between the cylinder block and the retainer plate, so that all block-side groove planes, which include respective extending axial lines of the block-side ball grooves and the inclined rotation center, are inclined with respect to an axial center of a center shaft and all drive shaft-side groove planes, which include respective extending axial lines of the shaft-side ball grooves and the inclined rotation center, are inclined with respect to an axial center of a drive shaft such that loads applied to a cage in an axial direction from the balls are balanced.

7. 发明申请

US20170350455A1 CONSTANT VELOCITY JOINT AND METHOD OF MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20170350455A1
公开(公告)日：2017-12-07
申请号：US15613314
申请日：2017-06-05
申请人： JTEKT Corporation
发明人： Tatsuya YOSHII , Yoshinari Sakai , Yoshimi Aoki , Tomohiro Nishida , Tomo Shigeno
IPC分类号： F16D3/2245 , B21K1/76 , F16D3/223 , B24B19/06
CPC分类号： F16D3/2245 , B21K1/765 , B24B19/06 , F16D2003/22309 , Y10S29/019 , Y10S464/906
摘要： Outer ball grooves of an outer joint member of a constant velocity joint each have a first ball groove for allowing a ball to roll therein when the constant velocity joint operates, and a second ball groove having a ball groove radius larger than a ball groove radius of the first ball groove. The second ball groove has a curved line and a connecting line. The curved line is connected to a groove bottom end of the first ball groove located closer to an opening of the outer joint member and is curved radially outward in a concave manner. The connecting line connects the curved line and the opening. The curved line is curved with a curvature center that is located closer to the opening than the groove bottom end of the first ball groove and that is located radially inside the outer joint member.

8. 发明授权

US09556915B2 Fixed type constant-velocity universal joint 有权
标题翻译：固定式等速万向节
公开(公告)号：US09556915B2
公开(公告)日：2017-01-31
申请号：US14431560
申请日：2013-09-03
申请人： Hiroyasu Hirukawa , Kenta Yamazaki , Kisao Yamazaki
发明人： Hiroyasu Hirukawa , Kenta Yamazaki , Kisao Yamazaki
IPC分类号： F16D3/224 , F16D3/223 , F16D3/2245
CPC分类号： F16D3/223 , F16D3/2245 , F16D2003/22309 , Y10S464/906
摘要： Track grooves of an outer joint member include first and second track groove portions. Each of the first track groove portions is formed into an arc shape having a curvature center at a position offset to an opening side with respect to a joint center. The first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line and adjacent to each other in the peripheral direction with their inclination directions opposite to each other. Each of the second track groove portions includes a linear part and is connected to the each of the first track groove portions at a position on the opening side with respect to the joint center. Track grooves of inner and outer joint members are formed to be mirror-image symmetrical with respect to a joint center plane at an operating angle of 0°.
摘要翻译：外侧接头构件的轨道槽包括第一和第二轨道槽部分。每个第一轨道槽部分形成为相对于接头中心偏离开口侧的位置的曲率中心的弧形。第一轨道槽部相对于接合轴线在外侧接头构件的圆周方向上沿周向相反地倾斜，并且倾斜方向彼此相反。每个第二轨道槽部分包括直线部分，并且在相对于接头中心的开口侧的位置处连接到每个第一轨道槽部分。内外接合构件的轨道槽以0°的操作角度相对于接头中心平面形成为镜像对称。

9. 发明授权

US09551382B2 Fixed type constant velocity universal joint 有权
标题翻译：固定式等速万向节
公开(公告)号：US09551382B2
公开(公告)日：2017-01-24
申请号：US14439901
申请日：2013-10-10
申请人： Hiroyasu Hirukawa , Teruaki Fujio , Kenta Yamazaki
发明人： Hiroyasu Hirukawa , Teruaki Fujio , Kenta Yamazaki
IPC分类号： F16D3/224 , F16D3/223 , F16D3/2233 , F16D3/2245
CPC分类号： F16D3/223 , F16D3/2233 , F16D3/2245 , F16D2003/22309 , Y10S464/906
摘要： Provided is a fixed type constant velocity universal joint, in which: each of first track groove portions positioned on an interior side of an outer joint member includes an arc part having a curvature center that is positioned without being offset in an axial direction with respect to a joint center; the first track groove portions are inclined in a peripheral direction with respect to a joint axial line (N-N) and adjacent to each other in the peripheral direction with their inclination directions opposite to each other; each of second track groove portions positioned on an opening side is formed into a different shape from a shape of the each of the first track groove portions so as to increase an effective track length at a maximum operating angle; the each of the first track groove portions and the each of the second track groove portions are connected to each other at a position on the opening side with respect to the joint center; each of track grooves of an inner joint member is formed so as to be mirror-image symmetrical with corresponding one of paired track grooves of the outer joint member with respect to a plane including the joint center and being perpendicular to the joint axial line at an operating angle of 0°; and an axial clearance between the inner joint member and a cage is set to be larger than an axial clearance corresponding to a clearance between each of balls and each of the track grooves.
摘要翻译：本发明提供一种固定式等速万向接头，其中：位于外侧接头构件内侧的第一轨道槽部各自具有弧形部，该圆弧部的曲率中心相对于联合中心; 所述第一轨道槽部相对于所述接合轴线（N-N）的周向倾斜，并且在周向上彼此相邻，并且倾斜方向彼此相反; 位于开口侧的每个第二轨道槽部分形成为与每个第一轨道槽部分的形状不同的形状，以便以最大操作角度增加有效轨道长度; 所述第一轨道槽部和所述第二轨道槽部中的每一个相对于所述接合中心在所述开口侧的位置处彼此连接; 内接头构件的轨道槽中的每一个形成为与外接头构件的对应的一对轨道槽相对于包括接头中心并且垂直于接头轴线的平面的镜像对称地工作角度为0°; 并且内关节构件和保持架之间的轴向间隙被设定为大于对应于每个球和每个轨道槽之间的间隙的轴向间隙。

10. 发明申请

US20050202881A1 Constant velocity joint 失效
标题翻译：恒速接头
公开(公告)号：US20050202881A1
公开(公告)日：2005-09-15
申请号：US10513789
申请日：2003-06-05
申请人： Tomonori Ohwaki , Tomoo Suzuki , Kazuyuki Ichikawa
发明人： Tomonori Ohwaki , Tomoo Suzuki , Kazuyuki Ichikawa
IPC分类号： F16D3/2245 , F16D3/16
CPC分类号： F16D3/224 , F16D3/2237 , F16D2003/22309 , Y10S464/906
摘要： The contact angle of the ball 15 with each first guide track 21 of an inner joint member 12 is made to become smaller gradually from an opening portion side toward a bottom portion side, and the curvature radius for the first guide track 21 is made to become larger gradually from the opening portion side toward the bottom portion side. If the contact angle only were made to become smaller gradually from the opening portion side toward the bottom portion side, the contact angle would become too small thereby to cause chattering in rotation to be generated. If the curvature radius only were made to become larger gradually from the opening portion side toward the bottom portion side, a contact ellipse M2 defined by the ball 15 and the first guide track 21 would become tool small, which would cause the ball 15 to make dents on the surface of the first guide track 21. However, the aforementioned drawbacks can be obviated by gradually diminishing the contact angle and gradually enlarging the curvature radius from the opening portion side toward the bottom portion side.
摘要翻译：使内侧接头构件12的球15与各第一导轨21的接触角从开口部侧朝向底部侧逐渐变小，使第一导轨21的曲率半径成为从开口部侧朝向底部侧逐渐变大。如果接触角仅从开口部侧朝向底部侧逐渐变小，则接触角变得太小，从而产生旋转颤动。如果仅使曲率半径从开口部侧朝向底部侧逐渐变大，则由球15和第一导轨21限定的接触椭圆M 2将变小，这将导致球15 在第一导轨21的表面上形成凹痕。然而，通过逐渐减小接触角并且从开口部侧朝向底部侧逐渐扩大曲率半径，可以消除上述缺点。

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