SENSOR UNIT

To solve the problem that, in a situation where a sensor unit is installed to an electric wire over a long period, it may become unable to maintain the relative positions of a detection part and the electric wire due to the aging degradation of a member of the sensor unit or the sheathing, etc., of the electric wire.SOLUTION: A sensor unit 1 comprises: a housing 2 that is configured to be installable to an electric wire 90 by sandwiching the electric wire 90 between a first housing 10 and a second housing 20; a cable contact part 60 that is located to the first housing 10 and is in contact with the electric wire 90; a detection part 51 that is located to the second housing 20 and is used for performing measurement; and a biasing member 69 that is disposed between one of the cable contact part 60 and the detection part 51 and the housing 2, so as to bias at least one of the cable contact part 60 and the detection part 51 toward the other of these. It is possible to properly maintain the relative positions of the electric wire 90 and the detection part 51 over a relatively long period, and obtain high-accuracy measurement results.SELECTED DRAWING: Figure 6 【課題】長期間にわたりセンサユニットを電線に設置している状況下において、センサユニットの部材や電線の被覆材等の経年劣化等の影響により、検知部と電線との相対位置を維持できなくなる可能性がある。【解決手段】センサユニット１は、第一筐体１０と第二筐体２０との間に電線９０を挟み込むようにして電線９０に設置されるように構成されている筐体２と、第一筐体１０に配置されており電線９０に接触するケーブル接触部６０と、第二筐体２０に配置されており計測を行うための検知部５１と、ケーブル接触部６０と検知部５１との少なくとも１つを他方に向けて付勢するように、ケーブル接触部６０と検知部５１との少なくとも１つと筐体２との間に配置されている付勢部材６９とを備える。比較的長期間にわたり、電線９０と検知部５１との相対位置を適切に維持することができ、高精度の計測結果が得られる。【選択図】図６