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Electric reactor

A technology of reactors and coils, applied in circuits, transformer/inductor casings, electrical components, etc., can solve problems such as burrs on exterior parts

Pending Publication Date: 2021-07-20
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a gap is formed between the tip of the retaining pin and the side surface of the split member due to manufacturing variation of the split member, the molten resin material enters the gap and solidifies, causing burrs to form on a part of the exterior part.

Method used

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  • Electric reactor
  • Electric reactor
  • Electric reactor

Examples

Experimental program
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Embodiment Construction

[0019] Such as Figure 1 to Figure 4 As shown, the reactor 10 includes: a coil 12, both ends of which are drawn from the outer peripheral side and wound by an α-winding method; a reel 14 configured to surround the coil 12; a core 16, which accommodates the coil 12 and the roll 14 ; and a resin molded portion 18 covering the outside of the core 16 . Reactor 10 is used, for example, with cover core (core) 54 of core 16 positioned upward (arrow A1 direction) and base core (core) 52 positioned downward (arrow A2 direction).

[0020] The coil 12 is, for example, a conductive flat wire covered with an insulating film such as enamel, and is wound on the outer peripheral side of the drum 14 by α-winding in two layers in the vertical direction with its wide surface facing the radial direction.

[0021] In detail, as image 3 As shown, the coil 12 is formed with an upper layer 20 and a lower layer 22 wound multiple times respectively, and a first end portion 24 as an end portion of th...

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PUM

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Abstract

The invention provides an electric reactor. The electric reactor (10) is provided with: a coil (12); a core (16) which accommodates the coil (12) therein and can be freely divided; and a resin molded part (18) that covers and fixes at least the side surface of the core (16). The resin molded part (18) has an opening part (68) that exposes a part of the outer peripheral surface (54a) of a cover core part (54) in the core (16) to the outside. The opening part (68) is opened so as to face only the cover core part (54) of the divided core (16), and a boundary portion (62) between the cover core part (54) and the base core part (52) is covered by a molded body (64) of the resin molded part (18).

Description

technical field [0001] The present invention relates to a reactor obtained by molding a core with a coil accommodated therein. Background technique [0002] Conventionally, there is known a reactor including: a coil around which a flat wire having a rectangular cross-section is wound; and a set of cores for accommodating the coil. As disclosed in Japanese Patent Application Laid-Open No. 2017-107995, this reactor includes: a coil; a magnetic core disposed on the inner peripheral side of the coil; and an exterior portion covering the outside of the coil and the core. [0003] In the case of manufacturing the above-mentioned reactor, after the coil assembly is constructed by placing the coil between a set of divided members constituting the core, the upper and lower molds are fitted together so as to cover the coil assembly, and The core is pressed and positioned in the axial direction by inserting the holding pin through the through hole of the split member. Then, by inject...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/02
CPCH01F27/022
Inventor 佐佐木英喜木村俊文小久保贵史东海林学
Owner HITACHI ASTEMO LTD