Patent ID: 7755346

Claim:
A mounting structure for a current sensor which is arranged between a negative terminal of a battery and a grounding unit, the current sensor having a magnetism-electricity converting element, the mounting structure comprising: a battery grounding cable which has one end connected with the negative terminal of the battery; a fixing unit which is electrically conductive to electrically connect other end of the battery grounding cable with the grounding unit, the fixing unit and the battery grounding cable constructing a current path which connects the negative terminal with the grounding unit, the current sensor is fixed by the fixing unit to the grounding unit, and disposed to detect current flowing through the fixing unit; and an electrical insulating member which is non-magnetic, wherein the current sensor includes a substantially C-shaped flux concentration core having a circumferential gap, in which the magnetism-electricity converting element is arranged, the fixing unit fixes the current sensor with respect to the grounding unit, in such a manner that the fixing unit is inserted through the flux concentration core with the electrical insulating member interposed therebetween, the electrical insulating member is a case for housing the magnetism-electricity converting element and the flux concentration core, the case has an insertion hole which is through the case and positioned corresponding to the flux concentration core, the fixing unit fixes the current sensor to the grounding unit in such a manner that the fixing unit is inserted through the flux concentration core and the insertion hole of the case, the case is made of a resin, and the case has at least one rib which is made of the resin and arranged between a first portion of the case at a side of the grounding unit and a second portion of the case at a side of the flux concentration core, to partially connect the first portion of the case and the second portion of the case.