Abstract: A secondary battery includes: a can having an accommodation space therein; an electrode assembly accommodated in the accommodation space in the can; and a cap assembly sealed with the can. The can has a beading part recessed into a side wall of the can at a region below where the cap assembly is accommodated, and the beading part has an acute angle with respect to the side wall of the can.

Abstract: Disclosed is an electromagnetic switching device. The electromagnetic switching device includes a coil assembly provided therein with a coil for generating a magnetic force; and a yoke which surrounds a portion of an outer surface of the coil assembly and into which the coil assembly is inserted, wherein the yoke includes a yoke upper part which forms a top surface; yoke side parts which are provided at one side of the yoke upper part to block the magnetic force generated from the coil; and a connection part which is disposed between the yoke upper part and the yoke side parts such that the yoke upper part and the yoke side parts are integrally formed with each other.