Core unit and wire harness

Patent metadata

Field	Value
Publication number	US-9815421-B2
Application number	US-201615378818-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Dec 18, 2015
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

A core unit includes a magnetic substance core formed in an annular shape, electric wires of plural phases being wound around the magnetic substance core at respective positions that are different from each other, and a restriction member that restricts the displacement of the electric wires about the axis of the magnetic substance core, the electric wires being wound around the magnetic substance core. The restriction member has a body fixed to one end of the magnetic substance core in the axial direction, and a plurality of cutout portions are formed in edge portions of the body, the cutout portions surround the respective electric wires wound around the magnetic substance core separately from the inside of the magnetic substance core in the radial direction.

First claim

What is claimed is:

1. A core unit comprising:
a magnetic substance core formed in an annular shape, electric wires of plural phases being wound around the magnetic substance core at respective positions that are different from each other about an axis of the magnetic substance core; and
a restriction member configured to restrict displacement of the electric wires about the axis of the magnetic substance core, the electric wires being wound around the magnetic substance core, wherein
the restriction member includes a body fixed to one end of the magnetic substance core in the axial direction of the magnetic substance core, and
a plurality of cutout portions are formed in edge portions of the body, the cutout portions are configured to surround the respective electric wires of each phase wound around the magnetic substance core separately from an inside of the magnetic substance core in a radial direction with the axis of the magnetic substance core as a center.

2. The core unit according to claim 1 , wherein shapes of the cutout portions correspond to respective winding shapes of the electric wires with respect to the magnetic substance core as viewed from the axial direction of the magnetic substance core.

3. The core unit according to claim 1 , wherein
each of the cutout portions supports the corresponding electric wire wound around the magnetic substance core from both sides about the axis of the magnetic substance core.

4. The core unit according to claim 2 , wherein
each of the cutout portions supports the corresponding electric wire wound around the magnetic substance core from both sides about the axis of the magnetic substance core.

5. The core unit according to claim 1 , wherein
the restriction member further includes a plurality of fins that project upwardly.

6. The core unit according to claim 2 , wherein
the restriction member further includes a plurality of fins that project upwardly.

7. The core unit according to claim 3 , wherein
the restriction member further includes a plurality of fins that project upwardly.

8. A wire harness comprising:
a magnetic substance core formed in an annular shape; electric wires of plural phases, the electric wires being wound around the magnetic substance core at respective positions that are different from each other about an axis of the magnetic substance core; and
a restriction member configured to restrict displacement of the electric wires about the axis of the magnetic substance core, the electric wires being wound around the magnetic substance core, wherein
the restriction member includes a body fixed to one end of the magnetic substance core in the axial direction of the magnetic substance core, the body including a plurality of cutout portions formed in edge portions of the body, and
the cutout portions separately surround the respective electric wires of each phase wound around the magnetic substance core from an inside of the magnetic substance core in a radial direction with the axis of the magnetic substance core as a center.

9. The wire harness according to claim 8 further comprising:
a holding unit that is fixed to a vehicle body and configured to hold the magnetic substance core and the restriction member, wherein
the body of the restriction member is a conductive member including a connection portion electrically connected with the holding unit, and
the holding unit electrically connects the connection portion and the vehicle body.

Assignees

• Yazaki Corp
• Toyota Motor Co Ltd
• Yasaki Corp

Inventors

• Yamaguchi Yasuhiro
• Iizuka Hayato
• Innan Takeshi
• Aihara Hiroshi

Classifications

• H01B9/02

  with screens or conductive layers, e.g. for avoiding large potential gradients · CPC title

• H01F2017/065

  Core mounted around conductor to absorb noise, e.g. EMI filter · CPC title

• H01F3/00

  Cores, Yokes, or armatures (magnetic materials H01F1/00; permanent magnets H01F7/02) · CPC title

• H01B7/426

  using cooling fins, ribs · CPC title

• B60R16/0207 Primary

  Wire harnesses · CPC title