Reactor having iron cores and coils

Patent metadata

Field	Value
Publication number	US-2018366252-A1
Application number	US-201816000517-A
Country	US
Kind code	A1
Filing date	Jun 5, 2018
Priority date	Jun 16, 2017
Publication date	Dec 20, 2018
Grant date	—

Abstract

A core body of a reactor includes an outer peripheral iron core composed of a plurality of outer peripheral iron core portions, at least three iron cores coupled to the plurality of outer peripheral iron core portions, and coils wound onto the at least three iron cores. Gaps, which can be magnetically coupled, are formed between one of the at least three iron cores and another iron core adjacent thereto. The reactor includes cover parts which at least partially cover the iron cores and provide insulation from the coils.

First claim

1 . A reactor comprising a core body, the core body comprising:
an outer peripheral iron core composed of a plurality of outer peripheral iron core portions, at least three iron cores coupled to the plurality of outer peripheral iron core portions, and coils wound onto the at least three iron cores; wherein gaps, which can be magnetically coupled, are formed between one of the at least three iron cores and another iron core adjacent thereto, the reactor further comprising: cover parts which at least partially cover the iron cores and provide insulation from the coils.

2 . The reactor according to claim 1 , further comprising additional cover parts which at least partially cover the inner surfaces of the outer peripheral iron core portions and provide insulation from the coils.

3 . The reactor according to claim 1 , wherein the cover parts include projecting portions which project from end surfaces of the iron cores.

4 . The reactor according to claim 1 , wherein the cover parts are made of a single member that at least partially covers the at least three iron cores and provides insulation from the coils corresponding to the at least three iron cores.

5 . The reactor according to claim 4 , wherein the cover parts include a partition which is provided at positions corresponding to the gaps.

6 . The reactor according to claim 1 , wherein protrusions are provided on portions of the outer surfaces of the cover parts that are located more radially outwardly than the coils.

7 . The reactor according to claim 1 , wherein the number of the at least three iron cores is a multiple of three.

8 . The reactor according to claim 1 , wherein the number of the at least three iron cores is an even number not less than 4.

Assignees

• Fanuc Corp

Inventors

• Yoshida Tomokazu
• Shirouzu Masatomo
• Tsukada Kenichi

Classifications

• H01F3/14 Primary

  Constrictions; Gaps, e.g. air-gaps (in magnetic shunt paths H01F3/12) · CPC title

• H01F27/26 Primary

  Fastening parts of the core together; Fastening or mounting the core on casing or support (on coil H01F27/30) · CPC title

• H01F27/324

  Insulation between coil and core, between different winding sections, around the coil; Other insulation structures · CPC title

• H01F37/00

  Fixed inductances not covered by group H01F17/00 · CPC title

• H01F27/263

  Fastening parts of the core together · CPC title