The insertion device includes a tubular base member extending with the longitudinal axis as the center, a driving source for generating an operation driving force for operating the operating portion, and a driving source for generating an operation driving force for operating the operating portion, And a linear portion extending inward and transmitting the operation driving force to the operation portion. The insertion device includes a coupling member that transmits vibration generated by the driving source to the base member in a state where the driving source vibrates by a load acting on the operating unit, and the vibration generated by the driving source is transmitted to the And a grip transmitted from the base member.挿入装置は、長手軸を中心として延設される筒状のベース部材と、動作部を動作させる動作駆動力を発生する駆動源と、前記長手軸に平行な線芯軸に沿って挿入部の内部に延設され、前記動作駆動力を前記動作部に伝達する線状部と、を備える。前記挿入装置は、前記動作部に作用する負荷によって前記駆動源が振動する状態において、前記駆動源で発生した振動を前記ベース部材に伝達する連結部材と、前記駆動源で発生した前記振動が前記ベース部材から伝達されるグリップと、を備える。
