Abstract: An operation member fixing mechanism includes: a plate member, an elastic member including a facing region, a protruding portion, a fixing lever, and a fixing knob. The protruding portion has a predetermined rigidity so as to allow the facing region to separate from the plate member when a compressed state is switched to a released state with a fixing lever and a fixing knob. The operation member fixing mechanism further includes a lubricant layer for reducing a sliding resistance of the protruding portion to the plate member in the released state and a cutout portion formed by cutting a contact surface of the facing region, the contact surface being a surface to be in contact with the plate member.

Abstract: A bending portion of an endoscope according to the disclosure includes: a plurality of bending pieces rotatably coupled to each other by a coupling fastener; a wire configured to transmit a traction operating force to a first bending piece included in the plurality of bending pieces; and a pin located in a first hole in the first bending piece, the pin connecting the wire to the first bending piece, a first end portion of the pin protruding from an outer circumference of the first bending piece, a second end portion of the pin protruding from an inner circumference of the first bending piece, a third portion of the pin contacts a surface of the first hole. A first width dimension of the first end portion is larger than an opening dimension of the first hole, the wire is attached to the second end portion.

Abstract: An operation member fixing mechanism includes: a plate member, an elastic member including a facing region, a protruding portion, a fixing lever, and a fixing knob. The protruding portion has a predetermined rigidity so as to allow the facing region to separate from the plate member when a compressed state is switched to a released state with a fixing lever and a fixing knob. The operation member fixing mechanism further includes a lubricant layer for reducing a sliding resistance of the protruding portion to the plate member in the released state and a cutout portion formed by cutting a contact surface of the facing region, the contact surface being a surface to be in contact with the plate member.

Abstract: An insertion apparatus includes a first exterior member, a second exterior member, and a sealing member disposed at a connection part and being configured to deform elastically, and a convex portion disposed in a spaced-apart manner from the sealing member in a longitudinal axis direction or in a circumferential direction, and being configured to position the first exterior member with respect to the second exterior member in the longitudinal axis direction and in the circumferential direction.

Abstract: An endoscope includes a plate member to which a member be operated to bend a bendable portion is fixed and which includes a through hole, and a tubular unit formed in a tubular shape to make a fluid flow and including a coupling portion which functions as a protruding portion disposed so as to be protruded from an outer surface. The endoscope further includes a positioning mechanism which positions the plate member and the tubular unit relative to each other so as to dispose the protruding portion around a periphery of the through hole including the through hole.

Abstract: An endoscope includes a plate member to which a member be operated to bend a bendable portion is fixed and which includes a through hole, and a tubular unit formed in a tubular shape to make a fluid flow and including a coupling portion which functions as a protruding portion disposed so as to be protruded from an outer surface. The endoscope further includes a positioning mechanism which positions the plate member and the tubular unit relative to each other so as to dispose the protruding portion around a periphery of the through hole including the through hole.

Abstract: An image pickup apparatus of the present invention includes: a fixed frame; a zoom lens holding frame; a focus lens holding frame; a focus driving unit and a zoom driving unit; an image pickup device; a base plate that is coupled to the fixed frame and displaceably supports the image pickup device; an X driving unit that drives the image pickup device in an X direction; and a Y driving unit that drives the image pickup device in a Y direction, wherein the focus driving unit is placed in an upper left portion of the fixed frame, the zoom driving unit is placed in a right side portion, and further the Y driving unit is placed in an upper right corner of the base plate and the X driving unit is placed in a lower right corner.

Abstract: An image pickup apparatus of the present invention includes: a fixed frame; a zoom lens holding frame; a focus lens holding frame; a focus driving unit and a zoom driving unit; an image pickup device; a base plate that is coupled to the fixed frame and displaceably supports the image pickup device; an X driving unit that drives the image pickup device in an X direction; and a Y driving unit that drives the image pickup device in a Y direction, wherein the focus driving unit is placed in an upper left portion of the fixed frame, the zoom driving unit is placed in a right side portion, and further the Y driving unit is placed in an upper right corner of the base plate and the X driving unit is placed in a lower right corner.