US 11,735,350 B2
Inductor
Jianxin Sheng, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Oct. 28, 2020, as Appl. No. 17/82,820.
Claims priority of application No. 2019-200132 (JP), filed on Nov. 1, 2019.
Prior Publication US 2021/0134514 A1, May 6, 2021
Int. Cl. H01F 27/255 (2006.01); H01F 27/28 (2006.01); H01F 41/04 (2006.01); H01F 41/02 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/255 (2013.01) [H01F 27/2804 (2013.01); H01F 27/29 (2013.01); H01F 41/0246 (2013.01); H01F 41/041 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An inductor comprising:
a body that includes a coil and a magnetic portion, and that has two principal surfaces that face each other and side surfaces that are adjacent to the two principal surfaces, the coil including a winding portion having a conductor and a pair of extended portions extended from the winding portion, the magnetic portion including magnetic powder and containing the coil therein, wherein
the winding portion includes a first meandering portion and a second meandering portion that each include a plurality of straight portions that are continuously configured so as to extend substantially circularly from an outer side to an inner side of the body when the winding portion is viewed through the principal surfaces of the body from the principal surfaces of the body,
the first meandering portion and the second meandering portion are continuously configured on the inner side of the body,
the straight portions of the first meandering portion and the straight portions of the second meandering portion are disposed apart from each other,
the side surfaces of the body include two side surfaces that extend in a first direction and that face each other and two side surfaces that extend in a second direction and that face each other,
the winding portion is disposed in a plane that is substantially parallel to the principal surfaces of the body,
the plurality of straight portions include at least two straight portions that extend in the first direction and at least two straight portions that extend in the second direction,
a first interval gap between those of the straight portions that are adjacent to each other and face each other among the straight portions extending in the first direction, and a second interval sw between one of the straight portions that is closest to one of the side surfaces extending in the first direction among the straight portions extending in the first direction and the one of the side surfaces extending in the first direction, have a relationship of gap/4≤sw≤gap, and
a third interval gap′ between those of the straight portions that are adjacent to each other and face each other among the straight portions extending in the second direction, and a fourth interval sw′ between one of the straight portions that is closest to one of the side surfaces extending in the second direction among the straight portions extending in the second direction and the one of the side surfaces extending in the second direction, have a relationship of gap′/4≤sw′≤gap′.