Abstract: The electric connection block includes: a plurality of layers, each layer consisting of a plurality of terminals bent in an L-shape arranged in a line, each terminal having a first end portion for electric connection and a second end portion for connection to a circuit board; an electrically insulating terminal holder including receiving surfaces arranged in a stairs manner, each receiving surface placing a first section of the terminal thereon, and through holes each permitting a second section of the terminal to be inserted therein, the through hole being adjacent to the receiving surface; and a cover which includes hole parts each permitting the first section of the terminal to be inserted therein and joins the terminal holder.

Abstract: A circuit board and components provided thereupon are held by and between lower and upper palettes. The upper palette has protecting portions that are provided above and opposed to the components. The shielding components prevent light beams irradiated by a preheating light source from directly reaching the components made of colored synthetic resin. Meanwhile, the upper palette has openings that are opposed to the circuit board except for the components protected by the protecting portions members. The light beams from the light source travel through the openings and applied to the circuit board. Openings are formed so as to be opposed to terminals that are soldered on and connected to the circuit board. Inner surfaces of the openings are made of light-reflecting material that reflects downward the light beams from the light source.

Abstract: The electric connection block includes: a plurality of layers, each layer consisting of a plurality of terminals bent in an L-shape arranged in a line, each terminal having a first end portion for electric connection and a second end portion for connection to a circuit board; an electrically insulating terminal holder including receiving surfaces arranged in a stairs manner, each receiving surface placing a first section of the terminal thereon, and through holes each permitting a second section of the terminal to be inserted therein, the through hole being adjacent to the receiving surface; and a cover which includes hole parts each permitting the first section of the terminal to be inserted therein and joins the terminal holder.

Abstract: It is an object of the present invention to provide a composite metal sheet having remarkably enhanced electrical property and reliability, a method for preparing the same composite metal sheet, and a device for preparing the same composite metal sheet.

Abstract: The present invention provides a joining method of metal plates, which can connect two metal plates without a projection in a surface of the metal plates and a gap, and a joined unit having metal plates which are connected without a projection in a surface of the metal plates and a gap between the metal plates. The joined unit has a pair of metal plates. One of the metal plates has a hole, and another metal plate has a projection having a height less than a thickness of the one of the metal plates. The projection passes through the hole, the one of the metal plates is placed on the other of the metal plates each other, and a central part of an end surface of the projection is crushed in the hole. Thereby, the metal plates are joined to each other, and the joined unit can be provided.