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    • 3. 发明公开
    • FIXED-TYPE CONSTANT VELOCITY UNIVERSAL JOINT
    • EP3434923A1
    • 2019-01-30
    • EP17769958.4
    • 2017-03-09
    • NTN Corporation
    • FUJIO, TeruakiFUNAHASHI, Masashi
    • F16D3/2245
    • Track grooves of an outer joint member comprise: first track groove portions (7a) located on a depth side; and second track groove portions (7b) located on an opening side, wherein the first track groove portions (7a) each have a ball raceway center line (Xa) having a single curvature radius (R1) with a curvature center that is prevented from being offset in an axial direction with respect to a joint center (O), wherein planes (M) each including the ball raceway center line (Xa) and the joint center (O) that are inclined with respect to a joint axial line (N-N) so that the planes (M) are inclined in directions opposite to each other in the first track groove portions (7a) that are adjacent to each other in a circumferential direction, wherein an end portion (A) of the ball raceway center line (Xa) of each of the first track groove portions (7a) is located on the opening side with respect to the joint center (O), wherein a ball raceway center line (Xb) of each of the second track groove portions (7b) is connected to the end portion (A), wherein a ball raceway center line (Y) of each of the track grooves of the inner joint member is formed so as to be mirror-image symmetrical with a ball raceway center line of corresponding one of the paired track grooves of the outer joint member with respect to a plane (P) that includes the joint center (O) at an operating angle of 0° and is orthogonal to the joint axial line (N-N), wherein the ball raceway center line (Xb) of the each of the second track groove portions (7b) has a single curvature radius (R2) with a curvature center that is offset in a radial direction with respect to the joint axial line (N-N), and wherein the curvature radius (R2) is set larger than the curvature radius (R1).
    • 5. 发明公开
    • FIXED CONSTANT-VELOCITY UNIVERSAL JOINT
    • 通用FESTGLEICHLAUFGELENK
    • EP2905491A1
    • 2015-08-12
    • EP13843819.7
    • 2013-09-03
    • NTN Corporation
    • HIRUKAWA HiroyasuYAMAZAKI KentaYAMAZAKI Kisao
    • F16D3/20F16D3/2245
    • Track grooves (7) of an outer joint member (2) include first track groove portions (7a) and second track groove portions (7b). Each of the first track groove portions (7a) 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 (7a) are inclined in a peripheral direction of the outer joint member (2) 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 the second track groove portions (7b) includes a linear part so as to increase an effective track length at a maximum operating angle, and is connected to the each of the first track groove portions (7a) at a position on the opening side with respect to the joint center (O). Track grooves (9) of an inner joint member (3) are each formed so as to be mirror-image symmetrical with corresponding one of the paired track grooves (7) of the outer joint member (2) with respect to a joint center plane (P) at an operating angle of 0°.
    • 外接头构件(2)的履带槽(7)包括第一履带槽部(7a)和第二履带槽部(7b)。 每个第一轨道槽部分(7a)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(7a)相对于接合轴线(N-N)在外侧接头构件(2)的周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(7b)包括直线部分,以便以最大操作角度增加有效轨道长度,并且在开口侧的位置处连接到每个第一轨道槽部分(7a) 相对于联合中心(O)。 内侧接头构件(3)的轨道槽(9)分别形成为与外侧接头构件(2)的一对轨道槽(7)相对于接头中心面 (P),工作角度为0°。