US 11,726,113 B2
Current sensor
Yuta Sato, Osaka (JP); Hirohide Ichihashi, Osaka (JP); Mitsuru Tomita, Mie (JP); Masakazu Kobayashi, Osaka (JP); and Manabu Hashimoto, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/432,384
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 26, 2020, PCT No. PCT/JP2020/013546
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/217838, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-083170 (JP), filed on Apr. 24, 2019.
Prior Publication US 2022/0155351 A1, May 19, 2022
Int. Cl. G01R 31/18 (2006.01); G01R 15/18 (2006.01); G01R 19/00 (2006.01)
CPC G01R 15/186 (2013.01) [G01R 19/0053 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A current sensor configured to detect a current flowing through an electrical conductor, the current sensor comprising:
a core having a hollow configure to allow the electrical conductor to pass through the hollow; and
a coil wound around the core, wherein:
the core substantially has a C-shape having a gap connected to the hollow,
the core has a first end surface and a second end surface which face each other across the gap, the first end surface and the second end surface being directed in directions opposite to each other,
the C-shape of the core is extended continuously from the first end surface to the second end surface while surrounding the hollow, and
at least a part of the gap of the core is located inside the coil.