METHOD FOR PRODUCTING ANTENNA OF CARD TYPE SMART KEY USING VEHICLE

摘要

PURPOSE: A method of manufacturing an antenna of a card type vehicle wireless transceiver improves the reliability of a product by preventing epoxy resin from not being filled inside an element and minimizes the thickness of the card type vehicle wireless transceiver. CONSTITUTION: A method of manufacturing an antenna of a card type vehicle wireless transceiver includes a step of forming a cavity on the upper and back surfaces of a circuit board as a space layer with a forming die after installing the patterned forming die on the upper and lower surfaces of the circuit board, a battery receiving member, and an emergency key receiving member (105); a step of forming a resin case sealing the wireless transceiver by filling epoxy resin into the cavity in a high pressure and high temperature press process; a step of hardening the resin case with a preset hardener after removing an inserting block from the forming die (109); a step of winding a coil around a bobbin to communicate with a vehicle in X-axis and Y-axis directions for receiving data transmitted from the vehicle through LF communication and forming an antenna coil part connected to a pin of a micro-control unit by an input terminal and an output terminal of the coil; and a step of forming an antenna pattern part by etching a metallic copper layer of the circuit board into a preset pattern for transceiving data with the vehicle in a Z-axis direction. [Reference numerals] (101) Mount an antenna including an antenna coil part and an antenna pattern part and components on a circuit board; (103) Form a battery receiving member and an emergency key receiving member; (105) Form a cavity through a forming die after inserting an inserting block; (107) Form a resin case by filling resin into the cavity; (109) Remove the inserting block and harden the resin case; (111) Attach a log sheet and a decoration sheet; (AA) Start; (BB) End