Pressure contact blades adaptable to extrafine strands

摘要

In an extrafine-strand-adaptable contact pressure blade, parts of the mutually opposed right and left side wall portions of a pressure contact part having a substantially U-shaped vertical section are formed by blanking so as to project inwardly in part in a substantially V-like shape, and the whole contact area of the right and left pressure contact blades with respect to the core of a wire is set at a value (equal to or larger than 0.15 mm2) which allows a slot width settable range to be determined by a pressure contact test to be larger than a tolerance range caused by a manufacturing tolerance.