Terminal-carrying circuit board
First Claim
1. A terminal-carrying circuit board structure comprising a circuit board and terminals installed therein, the circuit board including through-holes formed therein for the installation of respective terminals, each through-hole including a conductive inner wall surface having a first pre-installation lining of solder formed thereon, each terminal including first and second ends, said first end having a second pre-installation lining of solder formed thereon, said first and second pre-installation linings forming respective first and second tightly contacting lining surfaces each being scratched in response to installation of the terminal first part into its respective through hole, said first and second lining surfaces being thermally joined together by energy beam irradiation.
2 Assignments
0 Petitions
Accused Products
Abstract
A circuit board has holes extending therethrough, and a solder layer disposed on a first side of the board. Terminals have been pushed through respective holes and into contact with the solder layer. The terminals have been welded to the first side of the circuit board in a fluxless manner by an irradiated energy beam.
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Citations
7 Claims
- 1. A terminal-carrying circuit board structure comprising a circuit board and terminals installed therein, the circuit board including through-holes formed therein for the installation of respective terminals, each through-hole including a conductive inner wall surface having a first pre-installation lining of solder formed thereon, each terminal including first and second ends, said first end having a second pre-installation lining of solder formed thereon, said first and second pre-installation linings forming respective first and second tightly contacting lining surfaces each being scratched in response to installation of the terminal first part into its respective through hole, said first and second lining surfaces being thermally joined together by energy beam irradiation.
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7. A multi-layer, terminal-carrying circuit board structure, comprising a plurality of circuit boards and terminals installed therein, said circuit boards being provided with circuit patterns including interlayer circuit patterns and with through holes formed through respective circuit patterns, each through hole having a first pre-installation lining of solder covering an inner peripheral wall thereof and connected to the circuit pattern, each of said through holes including first and second ends, said first end defining a terminal-inlet end into which a leading end of a respective terminal is inserted, each terminal including a flange having a stop surface facing said terminal inlet end to limit an extent of installation of said terminal into its respective through hole, each terminal including its flange being covered by a second pre-installation lining of solder, said first and second pre-installation linings forming respective first and second tightly contacting surfaces each being scratched in response to installation of the terminal into its respective through hole, said first and second scratched lining surfaces being thermally joined together by energy beam irradiation.
Specification