Surge voltage reduction member

Patent metadata

Field	Value
Publication number	US-11004594-B2
Application number	US-201816029540-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Jul 7, 2017
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A surge voltage reduction member includes a tubular magnetic body having a through-hole and at least one coil wire. The coil wire is inserted through the through-hole and has a winding portion which is winded around a portion of the magnetic body. The coil wire is formed by connecting a bent coil element wire and a straight coil element wire. Where the coil wire has two or more bent coil element wires, the winding portion is formed by connecting the through-hole passing portion of one of adjacent bent coil element wires to the outside passing portion of the other of the adjacent bent coil element wires and connecting the outside passing portion of the one of the adjacent bent coil element wires to the straight coil element wire.

First claim

What is claimed is:

1. A surge voltage reduction member comprising:
a tubular magnetic body having longer portions and shorter portions and a through-hole that is defined by an inner circumferential surface of the magnetic body; and
at least one coil wire which is inserted through the through-hole and has a winding portion which is winded around a portion of the magnetic body,
wherein the coil wire is formed by connecting a bent coil element wire which is bent so as to have a U shape and a straight coil element wire which has an approximately straight shape;
wherein the coil wire has (N−1) bent coil element wires and one straight coil element wire where N is the number of times in which the bent coil element wire and the straight coil element wire are inserted through the through-hole;
wherein each of the bent coil element wire and the straight coil element wire is formed from a flat-plate-shaped member having a rectangular cross section taken perpendicularly to its axial direction and the bent coil element wire and the straight coil element wire are approximately identical in thickness;
wherein the width of the through-hole in the shorter-axis direction of the magnetic body is approximately equal to the thickness of the bent coil element wire or wires and the straight coil element wire;
wherein the bent coil element wire has a through-hole passing portion that is inserted through the through-hole and an outside passing portion that passes the magnetic body outside when the through-hole passing portion is inserted through the through-hole;
wherein where the coil wire has only one bent coil element wire, the winding portion is formed by connecting the outside passing portion of the bent coil element wire and the straight coil element wire after the through-hole passing portion of the bent coil element wire and the straight coil element wire are inserted through the through-hole; and
wherein where the coil wire has two or more bent coil element wires, the winding portion is formed by connecting the through-hole passing portion of one of adjacent bent coil element wires to the outside passing portion of the other of the adjacent bent coil element wires and connecting the outside passing portion of the one of the adjacent bent coil element wires to the straight coil element wire after the through-hole passing portions of the bent coil element wires and the straight coil element wire are inserted through the through-hole.

2. The surge voltage reduction member according to claim 1 , wherein where the coil wire has only one bent coil element wire, a portion where the outside passing portion of the bent coil element wire and the straight coil element wire are connected to each other is provided with an insulating member; and
wherein where the coil wire has two or more bent coil element wires, a portion where the through-hole passing portion of the one of the adjacent bent coil element wires and the outside passing portion of the other of the adjacent bent coil element wires are connected to each other and a portion where the outside passing portion of the one of the adjacent bent coil element wires and the straight coil element wire are connected to each other are provided with insulating members respectively.

3. The surge voltage reduction member according to claim 1 , further comprising:
a protective member which covers the magnetic body.

Assignees

• Yazaki Corp

Inventors

• Yamaguchi Yasuhiro
• Iizuka Hayato
• Imai Hiroaki
• Fujimoto Naoki
• Aihara Hiroshi

Classifications

• H01F27/24

  Magnetic cores · CPC title

• H01F27/343 Primary

  Preventing or reducing surge voltages; oscillations · CPC title

• H01F27/306

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• H01F27/2847 Primary

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title

• H01F27/2823

  Wires (H01F27/2866 takes precedence) · CPC title