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    • 3. 发明专利
    • CASE FOR ELECTRONIC COMPONENT AND ITS MANUFACTURE
    • JP2000269663A
    • 2000-09-29
    • JP7185499
    • 1999-03-17
    • NISSHIN KOGYO KK
    • SHIMIZU TOMOHITO
    • H05K5/04
    • PROBLEM TO BE SOLVED: To provide a case for en electronic component, which is low-cost and which is easy to manufacture. SOLUTION: In a process (a), an aluminum alloy disk 1 is arranged directly on the bottom face of a stainless steel case 1 without having an intermediate member interposed. In a process (b), the lower part of the case 1 is placed on an anvil (a support base) 24 in an ultrasonic welding apparatus, an ultrasonic horn (a tool) is brought into contact with the surface of the aluminum alloy disk 2 which is arranged on the bottom face of the case 1, the ultrasonic welding apparatus is operated, and the aluminum alloy disk 2 is bonded to the bottom face of the case 1 through ultrasonic welding. In a process (c), the case 1 is placed on a lower punch 16, the whole surface of the aluminum alloy disk 2 is pressed by an equal force by using an upper formal compression bonding punch 17, and so that the aluminum alloy disk 1 is crushed to make its thickness thin.
    • 6. 发明专利
    • ELECTRODE FOR PROJECTION WELDING
    • JPH0957462A
    • 1997-03-04
    • JP25004195
    • 1995-08-22
    • NISSHIN KOGYO KK
    • SHIMIZU TOMOHITO
    • B23K11/14B23K11/30
    • PROBLEM TO BE SOLVED: To obtain dense and uniform welding by forming a recessed part to position at the position facing to a projection for projection welding at welding on the surface of an lower electrode arranged at the side of a work so as to prevent generation of a splash. SOLUTION: A recessed part 24a made of a recessed groove is formed on a lower electrode 24 arranged at the side of a main body work 22 and on the surface positioned at the side of the main body work 22, the recessed part 24a is formed by the dimension larger than that of the projection 21a at the position facing to each projection 21a for projection welding. The recessed part 24a is allowable to deflection due to some degree of elasticity of the main body work 22 when pressurized to a work 21 and main body work 22 with an upper electrode 23 at welding. Even though there is some difference in a height of the projections 21a for projection welding, the projections 21a are conformed to the main body work 22. By this method, generation of a splash at welding is prevented.