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A soldering structure of a tubular material for soldering one end portion of a tubular material to an auxiliary plate with a soldering material coated thereto, wherein the plane auxiliary plate is formed therein with a communicating hole for allowing the tubular material to be inserted therein, one

A soldering structure of a tubular material for soldering one end portion of a tubular material to an auxiliary plate with a soldering material coated thereto, wherein the plane auxiliary plate is formed therein with a communicating hole for allowing the tubular material to be inserted therein, one end portion of the tubular material is inserted into the communicating hole and temporarily secured to the auxiliary plate through a deformation of the auxiliary plate at the end portion of the tubular material or the peripheral area of the communicating hole before soldering, thereby to close one end of a space between the peripheral surface of the tubular material and the inner wall of the communicating hole, the space allowing the soldering material melted to be pooled therein during soldering, and the tubular material and auxiliary plate being soldered when the melted soldering material pooled in the space is hardened.

대표청구항 ▼

A soldering structure of a thin tubular material and an aluminum plate material, said soldering structure comprising: a thin tubular material having first and second ends, said thin tubular material having an inner and an outer surface, and said outer surface being a soldering-material-free surface;

A soldering structure of a thin tubular material and an aluminum plate material, said soldering structure comprising: a thin tubular material having first and second ends, said thin tubular material having an inner and an outer surface, and said outer surface being a soldering-material-free surface; an aluminum plate material having front and back outer surfaces and having a soldering material coating on each said front and back outer surface thereof, and said aluminum plate material being thicker than said tubular material; a communicating hole in said aluminum plate material and extending therethrough, said communicating hole having a constant diameter, and the surface of said communicating hole being a soldering-material-free surface; said first end of said tubular material being in said constant diameter communicating hole and at an intermediate portion of said communicating hole, said first end of said tubular material having a flange-shaped widened tubular portion, said flange-shaped widened tubular portion biting into and fixedly engaging an inner wall of said intermediate portion of said communicating hole for causing said tubular material and said aluminum plate material to be secured prior to soldering, and for blocking off a clearance between said soldering-material-free surface of said communicating hole and the outer soldering-material-free surface of said tubular material for defining a pooling region adjacent to said front and back outer surfaces of said aluminum plate material having said soldering material coating for causing soldering material from said soldering material coating to be pooled therein during soldering; and wherein said flange-shaped widened tubular portion of said first end of said tubular material is formed by the insertion of a jig having a tapered tip portion into said first end of said tubular material positioned at said intermediate portion of said communicating hole, and whereby said soldering structure ensured proper pooling of said soldering material in said pooling region during soldering for proper joining in said tubular material and said aluminum plate material when said soldering material is hardened.