ONE PIN SYNCHRONOUS UNIVERSAL JOINT

PURPOSE:To make manufacture easy enough by pinching a round bar type one pin at an axial intersection, in a slot penetrated in the biaxial direction, and setting a one pin rotating track to a position where an axial intersection angle is halved. CONSTITUTION:A transmission biaxial bending point is in a bending point axis 401 of four bending axes 52, 520, 53, 530 and it bends up to the range of a space part thetawhere each outer spherical layer of these bending axes 52, 53 contacts. A link structure has each structure having set a node 402 in an intermediate position to an intermediate part up and down by those of node 61-spherical layer 62-node 63-spherical layer 64-another end node 63-spherical layer link 62 in a 180 deg. shifted position remaining node of the link. A bending point structure is a spherical layer, forming an axial horizontal slot penetrated in a rocking range of a one pin 10, and a slot wall surface consists of two conical surfaces 200 and 300. A transmission shaft spherical layer at the outside has an opening not to contact with an inside transmission shaft angle thetadegree, and a foiling bearing part 13 is inset in both ends of the one pin 10 as a roller. When a one pin rod rotating track axial surface is always set to such a position as halving an axial intersection angle, the formation is completed, whereby manufacture is thus facilitated.