Insertion apparatus

An insertion apparatus comprising:

• an elongated inserting section having a curving section which has a neutral position and is curvable at an arbitrary angle and which is arranged near a distal end section;
• an input section which is provided in an operating section arranged on a proximal end side of the inserting section, has a neutral input position corresponding to an input to hold the curving section at the neutral position, and receives an arbitrary input to curve the curving section in a movable range including a first range that includes the neutral input position and a second range that has an operation amount from the neutral input position exceeding the first range;
• a detecting section which detects an input to the input section;
• a first actuator which is operated to curve the curving section at a certain curving angle;
• a second actuator which gives a force towards the neutral input position to the input section;
• and
• a control section which operates the first actuator to curve the curving section at a curving angle corresponding to an input amount to the input section, operates the second actuator to move the input section towards the first range, when the input amount to the input section is in the second range, and stops a drive of the second actuator, when the input amount to the input section moves into the first range.