REACTOR MANUFACTURING METHOD AND MOLD FOR REACTOR MANUFACTURING

To provide a technique for suppressing a gap between a mold and an insert component (particularly a gap at a boundary between a coil lead wire and a resin) without using a movable mold.SOLUTION: A reactor manufacturing method disclosed herein includes a primary molding step and a secondary molding s...

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Bibliographic Details
Main Authors HYUGANO MITSUYASU, AISAKA YUTO, NAKANISHI YOSHIHIRO, NAKANO HIROFUMI, TAKEUCHI AKINOBU
Format Patent
LanguageEnglish
Japanese
Published 15.04.2021
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Summary:To provide a technique for suppressing a gap between a mold and an insert component (particularly a gap at a boundary between a coil lead wire and a resin) without using a movable mold.SOLUTION: A reactor manufacturing method disclosed herein includes a primary molding step and a secondary molding step. In the primary molding step, a coil mold body in which a coil is covered with a resin is molded. In the secondary molding step, an assembly in which the core is assembled to the coil mold body is put into a mold, and a resin cover that covers the core and is integrated with the coil mold body is molded. The resin cover may cover the entire core or a part of the core. In the manufacturing method disclosed herein, the coil mold body includes a resin taper portion that tapers as the resin taper portion approaches the tip of a coil lead wire. The mold in the secondary molding step is provided with a tapered groove into which the taper portion is fitted.SELECTED DRAWING: Figure 5 【課題】可動型を用いずに金型とインサート部品の間の隙間(特にコイルの引き出し線と樹脂との境界における隙間)を抑える技術を提供する。【解決手段】本明細書が開示するリアクトルの製造方法は、一次モールド工程と二次モールド工程を開示する。一次モールド工程では、コイルが樹脂で覆われたコイルモールド体を成形する。二次モールド工程では、コイルモールド体にコアを組み付けたアセンブリを金型に入れ、コアを覆うとともにコイルモールド体と一体となる樹脂カバーを成形する。樹脂カバーはコアの全てを覆ってもよいし、コアの一部を覆うものであってもよい。本明細書が開示する製造方法では、コイルモールド体は、コイルの引き出し線の先端に近づくにつれて先細りとなる樹脂製のテーパ部を有している。二次モールド工程の金型には、テーパ部が嵌合するテーパ溝が設けられている。【選択図】図5
Bibliography:Application Number: JP20190185409