Electromagnetic drive coil unit and molding method thereof
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United States of America Patent
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Oct 17, 2017
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app pub date -
Apr 6, 2015
filing date -
Apr 16, 2014
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Abstract
A method of molding an electromagnetic drive coil unit is provided which can secure satisfactory strength and waterproof properties. In a method of molding an electromagnetic drive coil unit in which a stator assembly includes bobbins having stator coils wound thereon and yokes in which an inner yoke having magnetic pole teeth and an outer yoke having magnetic pole teeth are combined and in which the stator assembly and a power supply terminal supplying power to the bobbins are molded in a resin, an inner molding process is performed on the inside of the outer yoke in a state where ends of the stator coils of the stator assembly are connected to the power supply terminal and an outer molding process is performed to cover an outer circumference of the stator assembly having an inner molded portion and an outside of the power supply terminal after the inner molding process.
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