Abstract: A terminal portion of a contact has a first portion extending from a one-side surface of an insulator, a second portion extending so as to be connected to a conductive portion of a board, and a third portion joining between the first and second portions. The second portion is bent using a joining portion between the second and third portions and as a fulcrum. The third portion is bent using, as a fulcrum, a joining portion between the first and third portions and in a direction away from the board toward the joining portion between the second and third portions.

Abstract: A terminal portion of a contact has a first portion extending from a one-side surface of an insulator, a second portion extending so as to be connected to a conductive portion of a board, and a third portion joining between the first and second portions. The second portion is bent using a joining portion between the second and third portions and as a fulcrum. The third portion is bent using, as a fulcrum, a joining portion between the first and third portions and in a direction away from the board toward the joining portion between the second and third portions.

Abstract: A wire electrode for wire electro-discharge machining comprises a core, and a coating layer formed on an outer periphery of the core at least a surface layer of which contains copper. The coating layer comprises an alloy of copper and at least one element selected from the group consisting of Zn, Cs, Se, Te and Mg, with the copper content being about 55.5 wt % to about 75 wt %. The coating layer does not have an oxide film thereon other than a natural oxide film.

Abstract: An electrical connector having a cap rotatable by a link mechanism, there are a connector housing, a first link having a symmetrical structure of both sides of the connector housing and pivoted at the connector housing, a second link having a symmetrical structure of both sides of the connector housing and pivoted at the first link, a cap pivoted at the second link, a sealing member installed at circumference of the cap or a connector on the connector housing, and wherein at least one of the first link and the second link is made of a one piece member. The cap is fitted to a top of the connector housing, and covers the connector to lead into a waterproof state. When an operator pushes up a handle of the second link by his finger, the first link and the second link rotate. Then the cap takes off from the top of the connector housing, and so the connector is ready for electrical connection.