| 摘要 |
<p>When a contact terminal (11) is inserted from the lower end of a bobbin (12) and fixed in place, the contact terminal (11) is secured unremovably to a lower part of the bobbin (12) through action of raised pieces (11c). A turn down part (13c) formed at the lower end of a coil element (13) is then inserted into the bobbin (12) from above and press fitted between press fit pieces (11b). The top cover part (10) is then fitted over the bobbin (12) holding the coil element (13) from above. Consequently, four engaging pieces (10a) are inserted between first and second ribs (12c, 12d) formed at a lower part of the bobbin (12) and secured in place. Since a helical antenna can be assembled without requiring any jig, tool or adhesive, assembling work is facilitated and the cost can be reduced.</p> |
