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US 2003/0222749 A1Published application
Shielded inductors
AssigneeBI Technologies Corporation
InventorSamuel Kung
Life of this patent
Estimating the term…
Abstract
An inductor includes a core, a coil disposed about the core, and a shield. The shield and the core are connected to each other so that a closed magnetic loop is formed. The core may be a single piece or made up of a pair of core segments. The shield may include two halves or portions or may include a cover with a base. The core may be unitary with the shield at one or both ends thereof. In embodiments where the shield includes two portions, the portions may have substantially identical geometry and dimensions.
Claims20
An inductor comprising:
- a coil including a pair of terminals;
- and
- a shielded core including a first portion and a second portion;
- each of the portions including:
- a housing having an end wall and a side wall, the side wall having a mating edge and a pair of notches;
- a core segment disposed on an inner surface of the end wall and having an end face;
- and
- a seat defined between the housing and the core segment for receiving the coil;
- wherein when the first and second portions are engaged together with the coil received by the seats:
- the mating edges of the side walls of the housings mate with each other to form a magnetically continuous shield;
- the end faces of the core segments contact each other to form a magnetically continuous core, such that a closed magnetic loop is formed by the shield and the core;
- the notches of the housing of the first portion respectively align with the notches of the housing of the second portion to form a pair of apertures in the shield;
- and
- the coil is received by the seats about the core with the terminals respectively projecting through the apertures of the shield.
11 more elements
An inductor comprising:
- a core;
- a coil disposed about the core;
- and
- a shield connected to core to form a closed magnetic loop.
1 more element
A method of manufacturing an inductor, the method comprising:
- providing a plurality of housings each including:
- an end wall and a side wall with a mating edge and a pair of notches;
- a core segment disposed on an inner surface of the end wall and having an end face;
- and
- a seat defined between the housing and the core segment;
- positioning a coil with a pair of terminals in the seat of one of the housings with the terminals positioned at the notches;
- and
- securing another one of the housings to the housing with the coil such that the mating edges of the side walls and the end faces of the core segments are respectively in magnetic contact, thereby forming a closed magnetic loop.
5 more elements
Dependencies are inferred from the claim text.