Brazing method and device, relay coil and method for the coil by the brazing method and device
First Claim
1. A brazing method comprising placing a work piece and a gas torch at prescribed working positions, shooting a thin gas flame from said gas torch toward a work piece at a pinpoint, and supplying a thread of soldering metal straight to said work piece while heating said work piece with said gas flame to melt said soldering metal, thereby to braze said soldering metal to said work piece.
1 Assignment
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Accused Products
Abstract
A minute work piece in various mechanical or electric component parts is securely brazed by shooting a thin gas flame toward the work piece at a pinpoint while supplying a thread of soldering metal straight to the work piece to heat the work piece and melt the soldering metal, thereby to braze the soldering metal to the work piece. The pinpoint brazing method and device makes it possible to form reliable connection between the conductive terminal of a relay coil and a lead wire wound on a coil bobbin through a sphere-shaped soldering metal. The relay coil thus produced by the brazing method is suitably applicable to various kinds of machinery bringing about vibration, such as automobiles.
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Citations
24 Claims
- 1. A brazing method comprising placing a work piece and a gas torch at prescribed working positions, shooting a thin gas flame from said gas torch toward a work piece at a pinpoint, and supplying a thread of soldering metal straight to said work piece while heating said work piece with said gas flame to melt said soldering metal, thereby to braze said soldering metal to said work piece.
- 5. A brazing device comprising a holder for supporting a work piece, a gas torch for shooting out a thin gas flame to said work piece to heat said work piece at a pinpoint, and a solder supplying mechanism for supplying and moving a thread of soldering metal to and fro relative to said work piece.
- 9. A brazing device comprising a holder for supporting a work piece, a gas torch for shooting out a thin gas flame to said work piece to heat said work piece at a pinpoint, a moving mechanism for moving said gas torch to adjust the work piece and the gas torch in position, a monitor camera for measuring the positions of said work piece and gas torch, a controller linked to said moving mechanism, solder supplying mechanism and monitor camera, and a solder supplying mechanism for supplying and moving a thread of soldering metal to and fro relative to said work piece.
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16. A relay coil comprising a coated lead wire wound on a bobbin and having wire end portions twined round terminals provided on said bobbin, said wire end portions being brazed to said terminals by pinpoint shooting a thin gas flame toward each of said terminals, and supplying a thread of soldering metal straight to the respective terminals while heating the terminals with the gas flame to melt said soldering metal.
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19. A method for producing a relay coil having a lead wire and conductive terminals, comprising twining each of leading ends of said lead wire round each of said conductive terminals, placing said relay coil and a gas torch at prescribed brazing positions, pinpoint shooting a thin gas flame from said gas torch toward said terminal round which said leading end of said lead wire is twined, and supplying a thread of soldering metal straight to said conductive terminal while heating said terminal with said gas flame to melt said soldering metal, thereby to braze said soldering metal to said terminal with said lead wire.
- 22. A method for producing a relay coil having a lead wire coated with a covering and conductive terminals, comprising twining each of leading ends of said lead wire round each of said conductive terminals, placing said relay coil and a gas torch at prescribed brazing positions, pinpoint shooting a thin gas flame from said gas torch toward said terminal round which said leading end of said lead wire is twined to burn away said covering of said lead wire, and supplying a thread of soldering metal straight to said conductive terminal while heating said terminal with said gas flame to melt said soldering metal, thereby to braze said soldering metal to said terminal with said lead wire.
Specification