| 摘要 |
Provided is an outer joint member for a constant velocity universal joint, which can be manufactured at low cost. The outer joint member includes a cup member (13) having a tubular body portion (1) and a bottom portion (12) for closing one opening of the body portion (1), and also includes a disc-like flange member (2) mounted on the bottom portion (12) of the cup member (13). A protrusion (8) is provided on the bottom portion (12), the flange member (2) is fitted on the protrusion (8), and an inside surface (4a) of the flange member (2) and an outer diameter surface (3) of the protrusion are bonded together by welding. In the welding, molten metal flows into a relief portion (9) provided in a fitting portion between the cup member (13) and the flange member (2), and this prevents the weld bead from raising, thereby reducing costs otherwise necessary to eliminate the raised bead.
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