Field coil assembly of electromagnetic clutch for compressor and method for manufacturing the same
View Patent ↗A field coil assembly of an electromagnetic clutch for a compressor and a method for manufacturing the same, wherein the field coil assembly includes a coil installed in a core and made by winding a wire W and a connector coupled thereto. The connector is provided with a terminal which is electrically connected to one end of the wire W. A protective coating is formed at a connecting portion between the terminal and the end of the wire W to prevent the connecting portion of the wire W and the terminal from being exposed to the outside. Accordingly, the connecting portion between the terminal and the coil is not exposed to moisture or air, thereby preventing electric short circuit from occurring by galvanic corrosion between the terminal and the coil.
1. A field coil assembly of an electromagnetic clutch for a compressor for a vehicle, comprising:
an aluminum coil installed to a core and made by winding a wire to generate a magnetic flux;
a connector provided in one side of the core and having a terminal electrically connected to one end of the wire to receive power and made of a conductive metal other than aluminum; and
a protective coating portion formed at a connecting portion between the terminal and the end of the wire, thereby preventing the connecting portion from being exposed to the outside,
wherein the protective coating portion is formed by applying a UV-curing paint or an epoxy-based resin paint,
wherein the terminal is made of copper or its alloy, and
wherein a shielding portion is formed at one side of the connector.
2. The field coil assembly as claimed in claim 1 , wherein the side of the connector at which the shielding portion is formed corresponds to the connecting portion of the terminal and the end of the wire.
3. The field coil assembly as claimed in claim 1 ,
wherein the connector provided with the terminal therein is made by insert injection molding;
wherein a corrosion resistant protective coating portion is formed at the connecting portion between the terminal and the end of the wire to be the protective coating portion; and
wherein the shielding portion is formed by molding a resin material with the connector and the coil coupled to each other.
4. The field coil assembly as claimed in claim 3 , wherein the UV-curing paint is irradiated with UV light.