PROBLEM TO BE SOLVED: To provide a leaving sensor which can easily pull out a key pulled in any direction.SOLUTION: A leaving sensor 100 comprises a housing 1 that has an insertion port 1a, a key 2 that can be removably inserted to the insertion port 1a, a support body 3 that supports the housing 1, and detection means 4 that detects insertion and removal of the key 2. The housing 1 is pivotally supported by the support body 3 swingably. The support body 3 has a first support 5 that pivotally supports the housing 1 swingably with a first virtual straight line L1 in a first direction D1 as a center, and a second support 6 that pivotally supports the first support 5 swingably with a second virtual straight line L2 in a second direction D2 as a center. At a reference point P on a third virtual straight line L3 that passes through the insertion port 1a and is in an insertion and removal direction of the key 2, the first, second, and third virtual straight lines L1, L2, and L3 are orthogonal to each other.COPYRIGHT: (C)2014,JPO&INPIT【課題】キーがいずれの方向に引っ張られたとしても、キーを引き抜き易い離脱センサを提供する【解決手段】離脱センサ100では、挿入口1aを有する筐体1と、挿入口1aに挿抜自在に取り付け可能なキー2と、筐体1を支持する支持体3と、キー2の挿抜を検出する検出手段4と、を備えた離脱センサであって、筐体1は、支持体3に揺動可能に軸支されている。支持体3は、第1方向D1に沿った第1仮想直線L1を中心として筐体1を揺動可能に軸支する第1支持体5と、第2方向D2に沿った第2仮想直線L2を中心として第1支持体5を揺動可能に軸支する第2支持体6と、を有し、挿入口1aを通り、キー2の挿抜方向に沿った第3仮想直線L3上にある基準点Pにおいて、第1仮想直線L1、第2仮想直線L2および第3仮想直線L3はそれぞれ直交している構成とした。【選択図】図2
