Choke coil
First Claim
1. A choke coil comprising:
- a closing magnetic core including a first magnetic core comprising a center magnetic leg, an outer magnetic leg, and a first common magnetic yoke, and a second magnetic core comprising a second common magnetic yoke in contact with said first magnetic core;
a coreless coil including a plate-type wire comprising at least one of a flat type wire and a foil type wire, wherein said coreless coil is disposed around the center magnetic leg and separated therefrom by an insulating layer; and
inside and outside terminals respectively coupled to inside and outside ends of the plate-type wire of the coreless coil, wherein one of said first common magnetic yoke and said second magnetic yoke has a substantially planar body portion having first and second sides with a predetermined thickness therebetween and a notch formed in the planar body portion, the notch extending between the first and second planar sides, and wherein said inside terminal extends outside said closing magnetic core through said notch, said inside terminal having a portion that extends substantially parallel with said planar body portion inside the notch within the thickness of said planar body.
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Accused Products
Abstract
The present invention relates to a choke coil utilized in a variety of electronic products both for industrial use and consumer use, and aims to provide a choke coil that is thinner in size, accommodates a larger current, provides better efficiency in assembly and higher reliability. The choke coil of the present invention comprises a closing magnetic core having a center magnetic leg, an outer magnetic leg 36 and a common magnetic yoke. A coreless coil winds a plate-type wire around the center magnetic leg of the closing magnetic core to form itself, and is mounted to the closing magnetic core. At least one terminal coupled to an inner turn of the coreless coil out of terminals coupled to both ends of the plate-type wire of the coreless coil is led out from a notch provided on one side of the common magnetic yoke of the closing magnetic core.
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Citations
21 Claims
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1. A choke coil comprising:
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a closing magnetic core including a first magnetic core comprising a center magnetic leg, an outer magnetic leg, and a first common magnetic yoke, and a second magnetic core comprising a second common magnetic yoke in contact with said first magnetic core;
a coreless coil including a plate-type wire comprising at least one of a flat type wire and a foil type wire, wherein said coreless coil is disposed around the center magnetic leg and separated therefrom by an insulating layer; and
inside and outside terminals respectively coupled to inside and outside ends of the plate-type wire of the coreless coil, wherein one of said first common magnetic yoke and said second magnetic yoke has a substantially planar body portion having first and second sides with a predetermined thickness therebetween and a notch formed in the planar body portion, the notch extending between the first and second planar sides, and wherein said inside terminal extends outside said closing magnetic core through said notch, said inside terminal having a portion that extends substantially parallel with said planar body portion inside the notch within the thickness of said planar body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A choke coil comprising:
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a closing magnetic core including a first magnetic core comprising a center magnetic leg, an outer magnetic leg, and a first common magnetic yoke, and a second magnetic core comprising a second common magnetic yoke in contact with said first magnetic core;
a coreless coil including a plate-type wire comprising at least one of a flat type wire and a foil type wire, wherein said coreless coil is disposed around the center magnetic leg and separated therefrom by an insulating layer; and
inside and outside terminals respectively coupled to inside and outside ends of the plate-type wire of the coreless coil, wherein said inside terminal is led outside said closing magnetic core through at least one of a notch in the first common magnetic yoke and a notch in the second common magnetic yoke, and wherein said inside terminal is led outside said closing magnetic core through at least one of;
a notch in the first common magnetic yoke;
a through hole in the first common magnetic yoke;
a notch in the second common magnetic yoke; and
a through hole in the second common magnetic yoke, wherein said insulating layer comprises a terminal base, wherein said terminal base comprises a base plate and a cylinder, located in a center of the terminal base, wherein said cylinder engages with the center magnetic leg, and wherein a thickness of a wall of said cylinder of the terminal base varies from a minimum thickness to a maximum thickness, and wherein a guiding portion is provided at the point of maximum thickness of the wall of said cylinder and the guiding portion engages with the inner terminal of the coreless coil.
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20. A choke coil comprising:
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a closing magnetic core including a first magnetic core comprising a center magnetic leg, an outer magnetic leg, and a first common magnetic yoke, and a second magnetic core comprising a second common magnetic yoke in contact with said first magnetic core;
a coreless coil including a plate-type wire comprising at least one of a flat type wire and a foil type wire, wherein said coreless coil is disposed around the center magnetic leg and separated therefrom by an insulating layer; and
inside and outside terminals respectively coupled to inside and outside ends of the plate-type wire of the coreless coil, wherein the inside terminal is led outside the closing magnetic core through at least one of a notch and a through hole provided in the first common magnetic yoke; and
wherein a thickness of the second common magnetic yoke is 65-90% of a thickness of the first common magnetic yoke.
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21. A choke coil comprising:
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a closing magnetic core including a first magnetic core comprising a center magnetic leg, an outer magnetic leg, and a first common magnetic yoke, and a second magnetic core comprising a second common magnetic yoke in contact with said first magnetic core;
a coreless coil including a plate-type wire comprising at least one of a flat type wire and a foil type wire, wherein said coreless coil is disposed around the center magnetic leg and separated therefrom by an insulating layer; and
inside and outside terminals respectively coupled to inside and outside ends of the plate-type wire of the coreless coil, wherein the inside terminal is led outside the closing magnetic core through at least one of a notch and a through hole provided in the second common magnetic yoke; and
wherein a thickness of the first common magnetic yoke is 60-90% of a thickness of the second common magnetic yoke.
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Specification