Patent ID: 6703987
Filing Date: 2004-03-09
Classification: H01Q

Abstract:
A helical antenna, comprising:a top cover portion, which has an approximately cylindrical storing portion with one end closed, and on which a plurality of coupling members extending from the bottom part is formed; a coil element having a coil portion wound in a coil shape, and a leading portion extending from one end of this coil portion; a bobbin, which holds said coil portion of this coil element, and, in which a through-hole, through which said leading portion is passed, is formed approximately along the central axis; and a conductive contact terminal, which is mounted to the bottom part of this bobbin, and in which a holding member disposed on the peripheral surface thereof, and press-fitting members disposed on the inside of said through-hole are formed, wherein the front end of said leading portion, which passes through said through-hole, is press-fitted inside said press-fitting members of said contact terminal, and said top cover portion is fitted over said bobbin so that the top part of said bobbin, which holds said coil portion, is stored inside said storing portion.