Fixed uniform-motion universal joint

Fixed uniform-motion universal joint

  • CN 102,066,794 A
  • Filed: 05/28/2009
  • Published: 05/18/2011
  • Est. Priority Date: 06/13/2008
  • Status: Active Application
First Claim
Patent Images

1. fixed-type constant-velocity universal joint, it is the fixed-type constant-velocity universal joint of unrooted cut type, it has:

  • the lateral joint parts that form eight rail slots that extend vertically at aperture surface;

    Diametric plane forms the inner contact parts of eight rail slots that extend vertically outside;

    Moving eight the transmission of torque ball orbits that form of rail slot association of the rail slot of lateral joint parts and inner contact parts corresponding with it;

    Be provided in eight transmission of torque balls on this transmission of torque ball orbit respectively;

    Have holding torque and transmit the retainer of the pit of ball, and have curve part and line part, it is characterized in that in the rail slot bottom surface of lateral joint parts and the rail slot bottom surface of inner contact parts,Be under 0 °

    the state at the operating angle of joint, the straight line that comprises the axis of the axis of described lateral joint parts and described inner contact parts is the joint central axis, when comprising the center of described transmission of torque ball and being the joint median plane with described joint central axis plane orthogonalSeparate to axial both sides from described joint median plane respectively with the center of the rail slot of described inner contact parts at the center of the rail slot of described lateral joint parts, and be offset to from described joint central axis with respect to these rail slots on the position that the radial direction opposition side separates, and make the outer spherical surface center of described retainer consistent with the inner ball surface center of retainerDistance between the center of the center of the rail slot of the center of the rail slot of described lateral joint parts or described inner contact parts and described transmission of torque ball is Rt, when the axial distance between the center of the rail slot of the center of the rail slot of described lateral joint parts or described inner contact parts and the described joint median plane is F, the ratio R1 of F and Rt, promptly=F/Rt is 0.061≤

    R1≤

    0.087, and at the center of the rail slot of described lateral joint parts or the distance of the described joint central axis of centre distance of the rail slot of described inner contact parts, be radial direction Offset when being fr, the ratio R3 of fr and described Rt, promptly=fr/Rt is 0.07≤

    R3≤

    0.19.

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