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1. 发明授权

EP2787237B1 TRIPOD TYPE CONSTANT VELOCITY UNIVERSAL JOINT AND METHOD FOR PRODUCING SAME 有权
公开(公告)号：EP2787237B1
公开(公告)日：2020-01-01
申请号：EP12853955.8
申请日：2012-11-05
申请人： NTN Corporation
发明人： MIAO Jiahua , MAKINO Shunsuke , MURAKAMI Hiroshi , ITAGAKI Taku , ADACHI Hiroshi , IKKI Makoto
IPC分类号： F16D3/205 , B24B19/08 , F16D3/20

2. 发明公开

EP2787237A1 TRIPOD TYPE CONSTANT VELOCITY UNIVERSAL JOINT AND METHOD FOR PRODUCING SAME 有权
标题翻译：哥伦比亚大使馆GLEICHLAUFGELENK UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2787237A1
公开(公告)日：2014-10-08
申请号：EP12853955.8
申请日：2012-11-05
申请人： NTN Corporation
发明人： MIAO Jiahua , MAKINO Shunsuke , MURAKAMI Hiroshi , ITAGAKI Taku , ADACHI Hiroshi , IKKI Makoto
IPC分类号： F16D3/205 , B24B19/08 , F16D3/20
摘要： Provided is a tripod type constant velocity universal joint, including: an outer joint member (2) including three track grooves (5) each formed so as to have roller-guide surfaces (6) arranged to face each other in a circumferential direction of the outer joint member (2); a tripod member (3) including three leg shafts (7) projecting in a radial direction of the tripod member (3); and roller units (4) each including a roller (11) and an inner ring (12) for supporting the roller (11) in a freely rotatable manner. The inner ring (12) is externally fitted to corresponding one of the three leg shafts (7). The roller (11) is movable along the roller-guide surfaces (6) of corresponding one of the three track grooves (5). Each of the three leg shafts (7) includes a region formed into a substantially circular-arc shape in horizontal cross-section that is orthogonal to an axial line (O) of the each of the three leg shafts (7). The each of the three leg shafts (7) has an outer peripheral surface held in contact with an inner peripheral surface (12a) of the inner ring (12) in a direction that is orthogonal to an axial line of the tripod type constant velocity universal joint. The outer peripheral surface of the each of the three leg shafts (7) and the inner peripheral surface (12a) of the inner ring (12) have a clearance (m) formed therebetween in a direction of the axial line of the tripod type constant velocity universal joint. The each of the three leg shafts (7) includes an outer peripheral surface region (7a) that is finished through grinding and held in contact with the inner peripheral surface (12a) of the inner ring (12). The each of the three leg shafts (7) includes a grinding relief portion (17) formed at an end portion in the circumferential direction of the outer peripheral surface region (7a).
摘要翻译：提供一种三脚架式等速万向接头，其包括：外接头构件（2），其包括三个轨道槽（5），每个轨道槽（5）形成为具有辊导向表面（6），辊导向表面（6）沿着外接头构件（2）; 三脚架构件（3），包括沿三脚架构件（3）的径向突出的三个腿部轴（7）; 以及滚子单元（4），每个滚子单元包括用于以可自由旋转的方式支撑滚子（11）的滚子（11）和内圈（12）。内环（12）外部装配到三个腿轴（7）中的相应一个。滚轮（11）可沿着三个轨道槽（5）中相应一个的滚子导向表面（6）移动。三个腿轴（7）中的每一个包括形成为与三根腿轴（7）中的每一个的轴线（O）正交的水平横截面的大致圆弧形状的区域。三根腿轴（7）中的每一个具有与内圈（12）的内周面（12a）保持接触的外周面，该外周面与三脚架式等速万能轴联合。三根腿轴（7）和内圈（12）的内周面（12a）的外周面在三脚架型常数的轴线方向之间形成有间隙（m）速度万向节。三个腿轴（7）中的每一个包括通过研磨完成并与内圈（12）的内周面（12a）保持接触的外周面区域（7a）。三个腿轴（7）中的每一个包括形成在外周面区域（7a）的圆周方向的端部处的磨削释放部（17）。

3. 发明公开

EP2682622A1 THERMAL PROCESSING METHOD, OUTER CONNECTING MEMBER, AND TRIPOD-TYPE CONSTANT VELOCITY UNIVERSAL JOINT 有权
标题翻译：热处理方法，外接连接件和三脚型恒速通用接头
公开(公告)号：EP2682622A1
公开(公告)日：2014-01-08
申请号：EP12752929.5
申请日：2012-02-22
申请人： NTN Corporation
发明人： ITAGAKI Taku , KATO Seiya , DRIER Brian
IPC分类号： F16D3/20 , F16D3/205
CPC分类号： F16D3/202 , F16D3/2055 , F16D2250/0053 , F16D2300/10
摘要： Proposed are a heat treatment method capable of molding, by mobile quenching of induction quenching, an outer joint member of a tripod type constant velocity universal joint excellent in a strength thereof without forming hardened layers in larger radially-inner portions, and the outer joint member and the tripod type constant velocity universal joint which are manufactured by the above-mentioned heat treatment method. Mobile quenching is performed in such a manner that a high-frequency induction heating coil (51) is moved in an axial direction relative to an outer joint member (21), and thus hardened layers (S) are formed on the roller guide surfaces (27) of the outer joint member (21). Magnetic field line cut-out bodies (A) for cutting out magnetic field lines generated through the high-frequency induction heating coil are arranged on the high-frequency induction heating coil (51), and each of the larger radially-inner portions (46) of the outer joint member (21) becomes an unquenched portion (50) by cutting out the magnetic field lines with the magnetic field line cut-out bodies (A).
摘要翻译：本发明提供一种热处理方法，该热处理方法能够通过高频淬火的可动式淬火来模制在大径向内部不形成硬化层且强度优异的三球销型等速万向接头的外侧接头部件，并且外侧接头部件以及通过上述热处理方法制造的三球销型等速万向接头。以高频感应加热线圈（51）相对于外侧接头部件（21）沿轴向移动的方式进行移动淬火，在辊引导面上形成硬化层（S） 27）。在高频感应加热线圈51上配置有用于切断通过高频感应加热线圈产生的磁力线的磁场线切口体（A），该高频感应加热线圈51的大径向内侧部分（46 ）通过利用磁场线切除体（A）切除磁力线而成为未切断部（50）。

4. 发明公开

EP4160031A1 TRIPOD-TYPE CONSTANT-VELOCITY UNIVERSAL JOINT 审中-实审
公开(公告)号：EP4160031A1
公开(公告)日：2023-04-05
申请号：EP21818297.0
申请日：2021-05-13
申请人： NTN Corporation
发明人： ITAGAKI Taku , SUGIYAMA Tatsuro , ISHIJIMA Minoru
IPC分类号： F16C19/26 , F16C19/44 , F16C33/58 , F16C35/04 , F16D3/205
摘要： Provided is a tripod type constant velocity universal joint (1), including: an outer joint member (2) having three track grooves (5) each including roller guide surfaces (6) arranged so as to be opposed to each other in a circumferential direction of each of the track grooves; a tripod member (3) including three leg shafts (7) projecting in a radial direction of the tripod member; and roller units (4) each including a roller (11) and an inner ring (12) configured to support the roller (11) in a freely rotatable manner, in which an outer peripheral surface (1 1a) of the roller (11) is formed of a partially spherical surface having a curvature center on an axis (7x) of each of the leg shafts (7), in which the roller guide surfaces (6) are each formed of a partially cylindrical surface having a curvature center on a horizontal line (X-X) passing an intersection (T) of a pitch circle (PC) of the track grooves (5) and a center line (5x) of each of the track grooves (5), and in which under a state in which no torque is applied to the joint, an end portion (11e) of the outer peripheral surface (11a) of the roller (11) is held in abutment against the roller guide surfaces (6).

5. 发明公开

EP3734090A1 POWER TRANSMISSION SHAFT 有权
公开(公告)号：EP3734090A1
公开(公告)日：2020-11-04
申请号：EP18895178.4
申请日：2018-12-21
申请人： NTN Corporation
发明人： ITAGAKI Taku , ISHIJIMA Minoru
IPC分类号： F16C3/02 , F16D1/02
摘要： Provided is a power transmission shaft, including: a metal shaft member; and a resin shaft member connected to the metal shaft member in an axial direction of the power transmission shaft. The resin shaft member is made of fiber reinforced plastic. The metal shaft member and the resin shaft member are joined to each other through a close-contact fitting portion between a male spline, which is formed in an outer surface of the metal shaft member, and a female spline formed by press-fitting the male spline into the resin shaft member. An edge is formed at a radially outer edge portion of a press-fitting-start end surface of the male spline of the metal shaft member.

6. 发明公开

EP3222862A1 POWER TRANSMISSION SHAFT 审中-公开
标题翻译：电力传输轴
公开(公告)号：EP3222862A1
公开(公告)日：2017-09-27
申请号：EP15861557.5
申请日：2015-11-02
申请人： NTN Corporation
发明人： ITAGAKI Taku , ASANO Yuichi , KOBAYASHI Tomoshige , KONOMOTO Takeyoshi , ISHIJIMA Minoru
IPC分类号： F16C3/02
CPC分类号： F16C3/02 , F16C3/026 , F16C2204/00 , F16C2208/02
摘要： A corrugated portion is formed in one end edge portion of the metallic shaft main body (2), and a triangular corrugated portion (11) is formed in an end edge portion of the shaft auxiliary body (3) on the metallic shaft main body side. The metallic shaft main body (2) and the shaft auxiliary body (3) are integrated by being linearly arranged by way of meshing that brings a side of the triangular corrugated portion (9) on the main body side and a side of the triangular corrugated portion (11) on the auxiliary body side into contact with each other. A fiber orientation angle (θ) of the fiber reinforced plastic of the shaft auxiliary body (3) is set so as to be in the same direction as a direction of stress generated in a hypotenuse of each triangular portion under a torque load state.
摘要翻译：在金属轴主体（2）的一个端部边缘部分中形成波纹部分，并且在轴辅助体（3）的金属轴主体侧（3）的端部边缘部分中形成三角波纹部分（11）。金属轴主体（2）和轴辅助体（3）通过使三角波纹部（9）的主体侧的一侧与三角波状的一侧在辅助体侧的部分（11）彼此接触。轴辅助体（3）的纤维增强塑料的纤维取向角度（θ）被设定为与转矩负荷状态下的各三角形部分的斜边中产生的应力的方向相同的方向。

7. 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.

8. 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.

9. 发明公开

EP3904716A1 TRIPOD-TYPE CONSTANT VELOCITY UNIVERSAL JOINT 有权
公开(公告)号：EP3904716A1
公开(公告)日：2021-11-03
申请号：EP19905147.5
申请日：2019-12-20
申请人： NTN Corporation
发明人： ITAGAKI Taku , SUGIYAMA Tatsuro , KAWATA Shouta
IPC分类号： F16D3/20 , F16D3/205
摘要： A tripod type constant velocity universal joint 1 includes an outer joint member 2 that includes track grooves 5, a tripod member 3 that includes three leg shafts 7 protruding in a radial direction, a roller 11 that is inserted into the track groove 5, and an inner ring 12 that is fitted onto the leg shaft 7, and rotatably supports the roller 11. A hardened layer 16 is formed on a surface of each leg shaft 7 by carburizing, hardening, and tempering. The tripod member 3 is formed a steel material having a carbon content of 0.23% to 0.44%. An effective hardened layer depth of the hardened layer 16 by using, as a Ts torque, 0.3 times a minimum static torsional torque at which a shaft 9 coupled to the tripod member 3 causes torsional fracture and 600HV as limit hardness is equal to or greater than a maximum shear stress depth Z when the Ts torque is applied.

10. 发明授权

EP2682622B1 THERMAL PROCESSING METHOD, OUTER CONNECTING MEMBER, AND TRIPOD-TYPE CONSTANT VELOCITY UNIVERSAL JOINT 有权
公开(公告)号：EP2682622B1
公开(公告)日：2019-07-31
申请号：EP12752929.5
申请日：2012-02-22
申请人： NTN Corporation
发明人： ITAGAKI Taku , KATO Seiya , DRIER Brian
IPC分类号： F16D3/202 , F16D3/205

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