Patent ID: 9618537
Date: 2017-04-11
CPC Classifications: G01R,H01C

Claim:
1. A shunt resistance type current sensor, comprising: a bus bar of a substantially flat plate shape; a shunt resistance part provided in the bus bar; a circuit board which is disposed so as to oppose the bus bar; connection terminals which electrically connect between the bus bar and the circuit board; and a voltage detector which is mounted on the circuit board and detects a voltage applied to the bus bar in order to detect a magnitude of current to be measured flowing through the bus bar, wherein each of the connection terminals is formed integrally with the bus bar as an extending piece extended from an edge part of the bus bar and provided at respective positions corresponding to both ends of the shunt resistance part, each of the connection terminals comprises a tapered tip end and an area having a reduced plate thickness set to be smaller than a plate thickness of the bus bar, the area of reduced plate thickness of each connection terminal extending along a predetermined length of each connection terminal beyond the tapered tip end of each connection terminal toward the bus bar, and the tapered tip end of the connection terminal penetrates the circuit board and thus the connection terminal is connected to the circuit board.