Method for manufacturing wound coil

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.

Description

technical field [0001] The present invention relates to a manufacturing method of a wire-wound coil. More specifically, the present invention relates to a manufacturing method of a wire-wound coil in which a covering resin is disposed so as to cover a coil wound around a winding core. Background technique [0002] As a typical wire-wound coil element, there is a winding core portion in which a conductive wire is wound around an iron core including a winding core portion and a pair of flange portions arranged at both ends of the winding core portion, and the starting end of the conductive wire and the A coil element whose terminal is connected to a terminal electrode disposed on a flange portion. In addition, among such wire-wound coils, there is a wire-wound coil in which a covering resin is disposed so as to cover the periphery of the conductive wire wound around the winding core. [0003] In Patent Document 1, such as Figure 13 As shown, a wire-wound coil 101 is disclose...

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Problems solved by technology

[0007] However, in the method of Patent Document 1, since the wound coil element 110 is pressed into the component housing portion 124 in a state where the coating resin 17 is dry to the fingertips, the shape of the coating resin 117 may be affected due to the shape of the coating resin 117 during the pressing. The elastic force of the part storage part 124 is broken, and it cannot be molded and trimmed into the desired shape.

[0008] In addition, the shape of the covering resin 117 accumulated in the relief portion 118 of the flange portion 112 may vary among the plural relief portions 118, and there is a problem that the appearance shape is unstable.

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