Coil device
AssigneeTDK Corporation
InventorsKiho Hwang, Satoshi Shinbo, Toshiyuki Horikawa
Life of this patent
Estimating the term…
Abstract
A coil device including a bobbin, a first wire having a first coil part wound around the bobbin, a second wire having a second coil part wound around the bobbin, and cores and installed to the bobbin. Main inner leg sections and of the cores and are arranged at the inside of the first coil part and the second coil part. First sub-inner leg sections and of the cores and are arranged at the inside of the first coil part and an outside of the second coil part. Second sub-inner leg sections and of the cores and are arranged at the inside of the second coil part and at an outside of the first coil part.
Claims15
A coil device comprising
- a bobbin,
- a first wire having a first coil part wound around the bobbin,
- a second wire having a second coil part wound around the bobbin, and
- a core installed to the bobbin, wherein;
- the core comprises
- a base part extending in a first axis direction,
- a main inner leg section arranged roughly on a center of the base part in the first axis direction,
- a first sub-inner leg section on the base part arranged at one side to the main inner leg section in the first axis direction, and
- a second sub-inner leg section on the base part arranged at an other side to the main inner leg section in the first axis direction;
- in which
- the main inner leg section is arranged at an inside of the first coil part and the second coil part,
- the first sub-inner leg section is arranged at the inside of the first coil part and an outside of the second coil part,
- the second sub-inner leg section is arranged at the inside of the second coil part and at an outside of the first coil part,
- the first coil part and the second coil part are arranged separately along a direction of a winding axis,
- the bobbin includes a first winding part to which the first coil part is wound around, a second winding part to which the second coil part is wound around, and a winding part separation flange separating the first winding part and the second winding part,
- the first winding part is provided with a first main opening for arranging the main inner leg section and a first sub-opening for arranging the first sub-inner leg section,
- the second winding part is provided with a second main opening for arranging the main inner leg section and a second sub-opening for arranging the second sub-inner leg section,
- the first main opening and the second main opening are continuous along a center axis,
- the first sub-opening is arranged at one side in the first axis direction with respect to the first main opening or the second main opening, and
- the second sub-opening is arranged at an other side in the first axis direction with respect to the first main opening or the second main opening.
Dependencies are inferred from the claim text.