AC generator for vehicle

Abstract

The invention provides an AC generator for vehicles, which not only ensures the melting amount of the joint sheet of the joint portion of a lead-out conductor and a metal terminal, but also avoids the generation of bubbles by ensuring the escape of the gas generated during the welding process, thereby improving the vibration resistance and excellent reliability.The joint sheets (28b, 28c) of the metal terminal (26) are fixed by riveted joint to hold the end portion of the lead-out conductor (25) from both sides of the conductor.The joint sheets (28b, 28c) for holding the end portion of the lead-out conductor (25) are welded to be integrated into one piece.The non-welding zone at the periphery of the welding zone of the joint sheets (28b, 28c) is formed with a notch to expose part of the lead-out conductor (25).

Description

technical field [0001] The invention relates to a vehicle alternator, in particular to the end treatment of the lead-out conductor of the stator winding. Background technique [0002] In a conventional automotive alternator, the joint piece provided on the metal terminal is fixed by caulking so as to embrace the end of the lead-out conductor from both sides, and is provided at the front end of the joint piece in a state where a part of the lead-out conductor is exposed. Arc welding is performed between the joining pieces embraced from both sides near the notch on the side, and the lead-out conductor of the stator winding is joined and fixed to the metal terminal (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2001-231209 [0004] However, in the conventional automotive alternator, arc welding is performed between the bonding pieces that embrace the lead-out conductors from both sides in the vicinity of the notch, so the g...

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional automotive alternator, arc welding is performed between the bonding pieces that embrace the lead-out conductors from both sides in the vicinity of the notch, so the gas generated during welding escapes from the notch, and air bubbles are suppressed. The production, but the volume of the bonding piece in the welding point is reduced, and the amount of melting is reduced

As a result, there are disadvantages such as a decrease in joint strength between the lead-out conductor and the metal terminal, a decrease in the vibration resistance of the junction between the lead-out conductor and the metal terminal, and failure to ensure long-term reliability.

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