PROBLEM TO BE SOLVED: To provide a linear actuator structure which inhibits contact between a stator and a movable element with a simple structure, and to provide an oral cavity sanitation device including the linear actuator structure.SOLUTION: A linear actuator structure 2 comprises a linear actuator 1 in a housing 60. The linear actuator 1 comprises: a movable element 20 that is disposed forming a gap with a stator 10 and an output shaft 30 connected with the movable element 20 through a connection member 31 and drives the movable element 20 so as to reciprocate thereby reciprocating the output shaft 30 in the axial direction. The output shaft 30 and the connection member 31 are formed so as to elastically deform. In a through hole 63 of the housing 60, a buffer member 64 is provided forming a clearance d2 between itself and the output shaft 30 so as to contact with the output shaft 30. Further, the clearance d2 between the output shaft 30 and the buffer member 64 is formed so as to be equivalent to or larger than the gap d1 between the stator 10 and the movable element 20.COPYRIGHT: (C)2013,JPO&INPIT【課題】簡易な構成で固定子と可動子の接触を抑止することの可能なリニアアクチュエータ構造体およびこれを備える口腔衛生装置を提供する。【解決手段】リニアアクチュエータ構造体2は、固定子10と間隙を有して配置された可動子20と、該可動子20と接続部材31を介して連結された出力軸30とを有して可動子20を往復駆動させることにより出力軸30を軸方向に往復運動させるリニアアクチュエータ1を筐体60内に備える。そして、出力軸30および接続部材31は、弾性変形可能に形成され、筐体60の貫通孔63には、出力軸30と接触可能に、該出力軸30との間に隙間d2を有して緩衝部材64が設けられる。さらに、出力軸30と緩衝部材64との隙間d2は、固定子10と可動子20との間隙d1以上に形成される。【選択図】図3
