| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixed constant velocity universal joint capable of easily realizing a wide angle of an operating angle without enlarging an outer diameter of an outside joint member. SOLUTION: In this fixed constant velocity universal joint provided with an outside joint member 25 for forming plural track grooves 22 toward the opening end 23 in the shaft direction at circumferential directional equal intervals on an inner spherical surface 21, an inside joint member 28 for forming plural track grooves 27 making a pair with the track grooves 22 of the outside joint member 5 in the shaft direction at circumferential directional equal intervals on an outer spherical surface 26, plural balls 29 for transmitting torque by being interposed between both track grooves 22, 27 of the outside joint member 25 and the inside joint member 28 and a cage 30 for holding the balls 29 by being interposed between the inner spherical surface 21 of the outside joint member 25 and the outer spherical surface 26 of the inside joint member 28, the opening side groove bottom of the track groove 22 of the outside joint member 25 is formed in a taper shape of linearly expanding a diameter toward the opening end 23.
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