| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a universal joint excelling in lubrication component retention, limiting a rate of lubrication component exudation to a required minimum even when having deformation by external force, excelling in affinity in initial-stage, having long service life and low cost, and excelling in assembling workability. SOLUTION: In the universal joint, rotation torque is transmitted through engagement of track grooves 3, 4 formed in an outer member 2 and an inner member 1 and a torque transmitting member 5, the torque transmitting member 5 rolls along the track grooves 3, 4 and performs axial displacement, and initial stage lubricant of grease or lubrication oil and foam lubricant 9 are provided together inside. The method for manufacruring the universal joint comprises a first process of filling the initial state lubricant in a bottom 2a of the outer member and a second process of charging a mixture at least mixed a resin foaming/hardening to become porous and a lubrication component and causing the mixture to foam and harden into the foam lubricant 9. COPYRIGHT: (C)2008,JPO&INPIT
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