Reactor

Patent metadata

Field	Value
Publication number	US-9508482-B2
Application number	US-201414535184-A
Country	US
Kind code	B2
Filing date	Nov 6, 2014
Priority date	Nov 12, 2013
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

U-shaped cores and fasteners are embedded in resin members, and brackets provided at respective ends of the fasteners protrude from the resin members. By fixing the brackets and a casing with screws, a reactor main body and the casing are fixed together. Openings formed by a partition wall that suppresses a direct application of a resin flowing from resin-filling portions to the fasteners are provided between the respective fasteners and the respective resin-filling portions. A protrusion extending in an opposite direction to a core and in parallel with the partition wall is provided between the resin-filling portions and the partition wall. The resin flowing from the resin-filling portion flows in between a core upper face and the fastener, and between a fastener surface located behind the partition wall and the internal surface of a die.

First claim

What is claimed is:

1. A reactor comprising:
a reactor main body;
a casing retaining thereinside the reactor main body; and
a fastener fixing the reactor main body to the casing, the reactor main body includes a core, a resin member covering around the core, and a coil wound around the resin member;
the fastener includes a portion embedded in the resin member, and a bracket protruding from the resin member, the bracket being fixed to the casing; and the resin member is provided with an opening exposing a surface of the portion of the fastener embedded in the resin member.

2. The reactor according to claim 1 , wherein:
the opening is formed by, when the resin member is formed by molding using a die, a partition wall provided in the die; and
the partition wall suppresses a direct application of a pressure of a resin to be filled in the die to the fastener.

3. The reactor according to claim 1 , wherein:
the fastener is a long and thin tabular member and has the bracket that protrudes from the resin member at each end of the tabular member; and
the fastener is disposed in parallel with a surface of the core with a predetermined space present therebetween, and a part of the resin member is filled in the predeteli lined space.

4. The reactor according to claim 1 , wherein the opening is provided at a location to be faced to a surface of the core that is disposed inside of the resin member with the fastener being disposed therebetween, and has a depth reaching a surface of the fastener from a surface of the resin member.

5. The reactor according to claim 1 , wherein:
the opening is formed by, when the resin member is molded using a die, a partition wall provided in the die; and
the partition wall abuts a surface of the fastener from an opposite side to the core disposed in the die, and prevents the fastener from being deformed by an injection pressure of a resin flowing in between a surface of the core and the fastener.

6. The reactor according to claim 1 , wherein:
the resin member is formed with a protrusion extending in an opposite direction to the core and in parallel with a depthwise direction of the opening; and
a part of the resin member is filled in an interior of the protrusion, a space between a surface of the core and the fastener, and a space between a surface of the fastener and a surface of the resin member.

7. The reactor according to claim 1 , wherein:
the opening has a cross-sectional shape that is parallel to a surface of the fastener; and
the cross-sectional shape includes a long axis that is parallel to or substantially parallel to a longitudinal axial line of the fastener, and a short axis that is orthogonal or substantially orthogonal to the longitudinal axial line of the fastener.

8. The reactor according to claim 1 , wherein:
the resin member is provided with a resin-filling portion; and
the opening is provided in a portion of the fastener embedded in the resin member and displaced toward the resin-filling portion.

Assignees

• Tamura Seisakusho Kk

Inventors

• Suzuki Kotaro

Classifications

• Y10T29/49071

  by winding or coiling · CPC title

• H01F41/005

  Impregnating or encapsulating (insulating of windings H01F41/12) · CPC title

• H01F27/266 Primary

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

• H01F27/022

  Encapsulation · CPC title

• H01F27/00

  Details of transformers or inductances, in general · CPC title