Method for manufacturing wound coil
AssigneeMurata Manufacturing Co., Ltd.
InventorTakayuki Yamakita
Life of this patent
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Abstract
A method for manufacturing a wound coil which has a stable appearance configuration with improved shape accuracy of a coating resin formed on the wound coil. A wound coil element is pressed into a holding jig including an elastic holding hole, and held therein such that an upper end of a coil is level with or lower than an upper end of the holding hole, and a gap G is present between an inner surface of the holding hole and the coil. Next, a flowable coating resin is supplied into the holding hole holding the wound coil element such that the coating resin is held without flowing away downwardly from the gap G, and the upper end 16a of the coil is buried in the coating resin. Next, the supplied coating resin is subjected to curing, thereby forming a wound coil.
Claims8
A method for manufacturing a wound coil, the wound coil including:
- a wound coil element including a core having a winding core and a pair of flanges provided at both ends of the winding core, terminal electrodes provided on the pair of flanges, and a wire wound around the winding core to constitute a coil, with a beginning and an end of the wire connected to the terminal electrodes;
- and a coating resin provided to bury the coil from an upper portion to both side portions of the winding core, the method comprising the steps of:
- pressing the wound coil element in a holding hole of a holding jig, the holding hole having an inner surface made of an elastic material, and holding the wound coil element such that an upper end of the coil is level with or lower than an upper end of the holding hole, a lower end of the terminal electrodes is lower than a lower end of the holding hole, and a gap is present between the inner surface of the holding hole and the coil;
- supplying the coating resin with fluidity into the holding hole holding the wound coil element such that the coating resin is held in the gap between the inner surface of the holding hole and the coil without causing the coating resin to flow away downwardly from the gap, and the coil is buried from the upper portion to both side portions of the winding core;
- and
- curing the supplied coating resin, with the wound coil element held in the holding jig.
Dependencies are inferred from the claim text.