PROBLEM TO BE SOLVED: To prevent backlash of a device body and unexpected falling for improving mounting performance, and to properly actuate the device body.SOLUTION: A portable electronic device includes: a device body 2 in which an electronic component 25 is built a fixing belt for mounting the device body on a living body surface a connector 30 provided at an end in a belt longitudinal direction L2 of the fixing belt and having an engagement protrusion 36 detachably housed in an engagement recess 40 formed in the device body and an urging body 50 provided in the engagement recess, for urging the engagement protrusion housed in the engagement recess to maintain an engagement state between the engagement recess and the engagement protrusion.COPYRIGHT: (C)2014,JPO&INPIT【課題】装置本体のがたつきや不意な脱落を防止でき、装着性能を高めることができるうえ、装置本体を適正に作動させること。【解決手段】電子部品25が内蔵された装置本体2と、装置本体を生体表面に装着するための固定ベルトと、固定ベルトにおけるベルト長手方向L2の端部に設けられ、装置本体に形成された係合凹部40内に係脱自在に収納される係合突起36を有する連結具30と、係合凹部内に設けられ、該係合凹部内に収納された係合突起を付勢して、係合凹部と係合突起との係合状態を維持する付勢体50と、を備えている携帯型電子機器を提供する。【選択図】図6
