Laser-welded joint structure between insulation frame and bearing cup of fan and method of forming same

摘要

A laser-welded joint structure between insulation frame and bearing cup of fan includes a base having a bearing cup and a stator having at least one insulation frame. The insulation frame includes a sleeve portion defining a bore axially extending therethrough. The sleeve portion is provided on an inner wall surface with at least one pressing section that radially projects into the bore to press a lower side against an upper end of the bearing cup and a bearing received therein. A portion of at least one lateral side of each pressing section that is in contact with the upper end of the bearing cup is melted by laser beam to form a laser-welded joint, so that the insulation frame and the bearing cup are integrally connected together at reduced manufacturing cost and have increased structural strength. A method of forming the laser-welded joint structure is also disclosed.

主权项

1. A laser-welded joint structure between insulation frame and bearing cup of fan, comprising:
a base having a bearing cup forward projected from the base to internally define a bearing receiving hole for accommodating a bearing therein; and a stator including at least one insulation frame, which has a sleeve portion fitted around the bearing cup and a bore axially extending through the sleeve portion and communicating with the bearing receiving hole; the sleeve portion being provided on an inner wall surface with at least one pressing section that radially inward projects into the bore with a lower side thereof pressing against the bearing and an upper end of the bearing cup; a portion of one lateral side of each pressing section that is in contact with the upper end of the bearing cup being melted to form a welded joint, via which the pressing section is connected to the upper end of the bearing cup.