PROBLEM TO BE SOLVED: To provide a drive mechanism that can efficiently transmit a linear drive force from a drive member to a driven member.SOLUTION: The drive mechanism for an endoscope 1 includes: a drive motor 14 a shaft member that performs rotation movement as a center of a predetermined rotary shaft by rotation of the drive motor 14 and performs linear movement along a shaft direction of the rotary shaft and a link member 17 through which the linear drive force obtained by the linear movement of the shaft member 16 is transmitted without the rotation drive force obtained by the rotation movement of the shaft member 16 being transmitted. In this case, when the linear drive force is transmitted from the shaft member 16 to the link member 17, the linear drive force is not reduced by a biasing force in an opposite direction to a direction of the linear drive force.COPYRIGHT: (C)2013,JPO&INPIT【課題】 リニア駆動力を駆動部材から被駆動部材へ効率よく伝達することのできる駆動機構を提供する。【解決手段】 内視鏡装置1の駆動機構は、駆動モータ14と、駆動モータ14が回転することにより、所定の回転軸を中心にして回転運動するとともに回転軸の軸方向に沿って直線運動する軸部材16と、軸部材16の回転運動により得られる回転駆動力が伝達されることなく、軸部材16の直線運動により得られるリニア駆動力が伝達されるリンク部材17を備える。この場合、リニア駆動力が軸部材16からリンク部材17へ伝達されるときに、リニア駆動力の方向と反対方向の付勢力によってリニア駆動力が低減されない。【選択図】 図1
