Electrical assembly having a conductive and magnetic member
An electrical assembly may include an electrically conductive first member, a magnetic second member, and/or a housing molded on the first member and the second member. A method of assembling an electrical assembly may include disposing the first member in contact with a first mold, disposing the second member in contact with the first mold, moving a second mold into contact with the first mold, and/or inserting a housing material (e.g., liquid plastic) into the first mold and the second mold to form the housing.
1 . An electrical assembly, comprising:
an electrically conductive first member having a first surface and a second surface opposite the first surface;
a magnetic second member; and
a housing formed over at least portions of the electrically conductive first member and the magnetic second member;
wherein the housing contacts the first surface and the second surface of the electrically conductive first member,
wherein the electrically conductive first member and the housing are disposed at a first side of a circuit board,
wherein at least a portion of the magnetic second member extends through a plurality of apertures that extends from the first side of the circuit board to a second side of the circuit board, such that a sensor and at least the portion of the magnetic second member are connected to the second side of the circuit board,
wherein the sensor is disposed, via the housing, in a center region where the electrically conductive first member and the magnetic second member overlap, and
wherein the sensor extends along the electrically conductive first member.
2 . The electrical assembly of claim 1 , wherein the magnetic second member includes a U-shaped configuration.
3 . The electrical assembly of claim 1 , wherein the housing is disposed on a top surface of the magnetic second member and on a bottom surface of the magnetic second member such that the magnetic second member is disposed partially between portions of the housing in a first direction perpendicular to the electrically conductive first member.
4 . The electrical assembly of claim 3 , wherein the housing is disposed on a top surface of the electrically conductive first member and on a bottom surface of the electrically conductive first member such that the electrically conductive first member is disposed between portions of the housing in the first direction perpendicular to the electrically conductive first member.
5 . The electrical assembly of claim 1 , wherein the magnetic second member is configured to concentrate a magnetic field generated via electrical current flowing through the electrically conductive first member to facilitate sensing of the magnetic field by the sensor.
6 . The electrical assembly of claim 5 , wherein the housing is disposed on a first surface of the circuit board, is indirectly attached to the circuit board via at least one of the electrically conductive first member and the magnetic second member, and is not directly attached to the circuit board.
7 . The electrical assembly of claim 5 , wherein a portion of the housing is disposed between the electrically conductive first member and the circuit board.
8 . The electrical assembly of claim 5 , wherein the housing covers substantially all portions of the magnetic second member disposed at a first side of the circuit board.
9 . The electrical assembly of claim 1 , wherein a bottom surface of the magnetic second member is substantially covered by at least one of the housing and the electrically conductive first member; the housing includes a first length; the magnetic second member include a first width; and the first length is the same as the first width.
10 . The electrical assembly of claim 1 , wherein the housing includes a through aperture, a first recess, and a second recess;
wherein a narrow portion of the electrically conductive first member is disposed in the through aperture;
a first wide portion of the electrically conductive first member is partially disposed in the first recess;
a second wide portion of the electrically conductive first member is partially disposed in the second recess; and
the narrow portion is disposed between and connects the first wide portion and the second wide portion.
11 . The electrical assembly of claim 1 , wherein the electrically conductive first member includes a first wide portion, a second wide portion, and a narrow portion connecting the first wide portion and the second wide portion; and
the housing is at least as long as the narrow portion.
12 . The electrical assembly of claim 11 , wherein an edge of the first wide portion is disposed in a recess of a first side wall of the housing;
an edge of the second wide portion is disposed in a recess of a second side wall of the housing; and
the first wide portion is wider than the housing.
13 . The electrical assembly of claim 1 , wherein the housing includes a top wall having a top wall bottom surface, a bottom wall having a bottom wall top surface, and an internal wall having an internal wall top surface and an internal wall bottom surface;
the electrically conductive first member includes a first member top surface and a first member bottom surface;
the magnetic second member includes a second member top surface and a second member bottom surface;
the second member top surface is in contact with the top wall bottom surface;
the second member bottom surface is in contact with the internal wall top surface;
the first member top surface is in contact with the internal wall bottom surface; and
the first member bottom surface is in contact with the bottom wall top surface.
14 . The electrical assembly of claim 13 , wherein the top wall partially covers the second member top surface such that at least a section of the second member top surface is exposed.
15 . A method of assembling the electrical assembly of claim 1 , the method comprising:
disposing the first member within and/or in contact with a first mold;
disposing the second member within and/or in contact with the first mold;
providing a second mold proximate the first mold; and
inserting plastic into the first mold and the second mold to form the housing.
16 . The method of claim 15 , wherein the first member includes a first member top surface and a first member bottom surface;
the second member includes a second member top surface and a second member bottom surface; and
inserting plastic into the first mold and the second mold includes inserting plastic such that:
the housing includes a bottom wall having a bottom wall top surface, and an internal wall having an internal wall top surface and an internal wall bottom surface;
the second member bottom surface is in contact with the internal wall top surface;
the first member top surface is contact with the internal wall bottom surface; and
the first member bottom surface is in contact with the bottom wall top surface.
17 . The method of claim 15 , wherein inserting plastic into the first mold and the second mold includes inserting plastic such that an air gap is present on both lateral sides of the first member between the first member and the second member.
18 . The method of claim 15 , wherein inserting plastic into the first mold and the second mold includes inserting plastic such that substantially all space between the first member and the second member is filled by portions of the housing.
19 . An electrical assembly, comprising:
an electrically conductive and substantially planar first member having a first surface and a second surface opposite the first surface;
a magnetic second member; and
a housing formed over at least portions of the electrically conductive and substantially planar first member and the magnetic second member;
wherein the housing contacts the first surface and the second surface of the electrically conductive and substantially planar first member,
wherein the electrically conductive and substantially planar first member and the housing are disposed at a first side of a circuit board,
wherein at least a portion of the magnetic second member extends through a plurality of apertures that extends from the first side of the circuit board to a second side of the circuit board, such that a sensor and at least the portion of the magnetic second member are connected to the second side of the circuit board, and
wherein the sensor extends along the electrically conductive and substantially planar first member.