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US 6,646,531 B2Granted
Coated coil assembly of a transformer
AssigneeSamsung Electronics Co., Ltd.
InventorCheol-Jin Kim
Life of this patent
Estimating the term…
Abstract
A method for forming a resin molding on a coil of a transformer is disclosed. The method comprises the steps of inserting a coil into an auxiliary spacing apparatus, inserting the auxiliary spacing apparatus into a mold, and forming a resin molding for the auxiliary spacing apparatus with the coil by putting a resin into the mold. According to the methods, the coil is not damaged and a resin molding is formed with a uniform thickness.
Claims27
A coated coil assembly, comprising:
- an auxiliary spacing apparatus comprising:
- a portion defining a space for receiving a wound coil therein, and
- a plurality of protrusions contacting a mold when the wound coil is received into the mold, the protrusions maintaining a predetermined gap between the coil and the mold, whereby a resin layer is formed on the coil;
- and
- said resin layer enclosing the auxiliary spacing apparatus and with the coil received in the auxiliary spacing apparatus, and protecting the coil mechanically and electrically.
2 more elements
A coated coil assembly, comprising:
- an auxiliary spacing apparatus comprising:
- a plurality of continuous walls defining a cavity accommodating reception of a plurality of windings of an electrical coil;
- and
- a plurality of discrete spacers protruding spaced-apart along a multiplicity of outer surfaces of said walls opposite from said cavity, said spacers extending outwardly from said surfaces;
- and
- a layer of resin encasing said auxiliary spacing apparatus and a coil located within said cavity.
3 more elements
A coated coil assembly, comprising:
- a first metal mold, said first metal mold having a first cut-out for receiving a previously wound coil, said first cut out of said first metal mold having recesses throughout said first cutout;
- a second metal mold having a second cutout slightly larger than said first cutout, said second cutout being absent recesses or projections;
- a coil comprising a plurality of electrically conductive windings;
- and
- resin that is applied when said coil is placed in said first metal mold to fill spaces comprising said recesses between said coil and said first metal mold, said resin also being applied to said coil coated with resin having protrusions produced by said recesses of said first metal mold when placed in said second metal mold.
2 more elements
A coated coil assembly, comprising:
- a coil of an electrical conductor, said coil having an upper surface, a lower surface, an inner surface and an outer surface;
- a receptacle having three walls connected to each other and forming a space wherein said coil resides in said space of said receptacle, each of said three walls of said receptacle having a plurality of discrete protrusions spaced-apart along and extending outwardly from each of said three walls, said projections being disposed only on sides of said three walls opposite said space where said coil resides;
- and
- a resin layer encasing said coil and said three walls of said receptacle and said projections of said receptacle.
1 more element
A coated coil assembly, comprising:
- a coil comprising a plurality of electrically conductive windings;
- spaces comprising a layer of resin encasing said coil and a plurality of discrete ridges of said resin, spaced-apart along and extending outwardly from said resin;
- and
- a coating of resin disposed between said ridges and covering said layer of resin.
1 more element
Dependencies are inferred from the claim text.