# US 12,601,765 B2 · Current sensor

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- Number: US 12,601,765 B2
- Document ID: US12601765B2
- Status: Granted
- Kind: B2
- Application number: 18/455,548
- Filed: 2023-08-24
- Published: 2024-01-11
- Granted: 2026-04-14
- Earliest claimed: 2021-02-24
- Assignees: Suncall Corporation
- Applicants: Suncall Corporation
- Inventors: Akio Mugishima; Kenji Murakami
- Web page: https://patentgrep.com/patent/US12601765B2

## CPC

- G01R 15/20: using galvano-magnetic devices, e.g. Hall-effect devices {, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices}
- G01R 15/207: {Constructional details independent of the type of device used}
- G01R 19/0092: {Measuring current only}
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)

## Abstract

A current sensor that can reduce an installation area and improve measurement accuracy has a busbar through which current to be measured flows and a magnetic sensor that detects a magnetic field component generated by the current flowing through the busbar. The busbar can have left and right through-holes which can change the flow of the current to be measured. The magnetic sensor can be mounted on the upper surface of the busbar and can be screw-fixed to the upper surface of the busbar using the left and right through-holes.

## Claims

### Claim 1

A current sensor comprising:
a bus bar operable to conduct a flow a current to be measured;
a magnetic sensor operable to detect a magnetic field component generated by current flowing through the bus bar;
the bus bar having a changer operable to change the flow of the current to be measured;
the bus bar being formed in a rectangular shape having an upper surface, a lower surface, an upper side surface, a lower side surface, a left side surface, and a right side surface;
the magnetic sensor being mounted on the upper surface of the bus bar;
the current flowing through the busbar flows from the right side surface to the left side surface, or from the left side surface to the right side surface;
the changer being composed of a protruding portion; and
the protruding portion being integrally provided so as to protrude outwardly from the upper side surface and the lower side surface of the busbar, respectively.