Abstract: An operation mechanism for an insertion device includes a moving section, an operation section configured to operate the moving section, a frame body fixed in the operation section, a long member movable along the frame body according to the operation of the operation section, a first tabular member provided between the frame body and the long member in the operation section, and a plurality of first projecting sections projecting from the first tabular member to the frame body side and disposed in a plurality of holes of the frame body.

Abstract: A bending angle adjustment mechanism for an endoscope includes a rod member that is disposed along a traveling path of a long member that is connected to a bending portion that is bendable and is pulled, a support member made of metal that is integrally provided to support both ends of the rod member, an adjustment piece that is engaged with the rod member, is movable along the rod member, and restricts movement of the long member, a guide member made of resin having a guide surface for guiding movement of the adjustment piece, wherein the guide member is fixed in a state in which the guide member is sandwiched between the adjustment piece and the support member so that the guide surface is disposed in a position capable of guiding the adjustment piece.

Abstract: A bending angle adjustment mechanism includes a rod member that is disposed along a traveling path of a long member that is connected to a bending portion that is bendable and has a threaded portion formed thereon, an adjustment piece that is disposed in a predetermined position of the rod member by being engaged with the threaded portion, and restricts movement of the long member, a head portion that is provided at an end portion of the rod member to rotate the rod member, a support member that is provided at both ends of the rod member and rotatably supports the rod member, and a convex portion that protrudes to be higher than a lower edge position of an outer circumferential edge portion of the head portion while keeping the head portion of the rod member which is supported by the support member, in a rotatable state.

Abstract: A bending angle adjustment mechanism for an endoscope includes a rod member that is disposed along a traveling path of a long member that is connected to a bending portion that is bendable and is pulled, a support member made of metal that is integrally provided to support both ends of the rod member, an adjustment piece that is engaged with the rod member, is movable along the rod member, and restricts movement of the long member, a guide member made of resin having a guide surface for guiding movement of the adjustment piece, wherein the guide member is fixed in a state in which the guide member is sandwiched between the adjustment piece and the support member so that the guide surface is disposed in a position capable of guiding the adjustment piece.

Abstract: A bending angle adjustment mechanism includes a rod member that is disposed along a traveling path of a long member that is connected to a bending portion that is bendable and has a threaded portion formed thereon, an adjustment piece that is disposed in a predetermined position of the rod member by being engaged with the threaded portion, and restricts movement of the long member, a head portion that is provided at an end portion of the rod member to rotate the rod member, a support member that is provided at both ends of the rod member and rotatably supports the rod member, and a convex portion that protrudes to be higher than a lower edge position of an outer circumferential edge portion of the head portion while keeping the head portion of the rod member which is supported by the support member, in a rotatable state.

Abstract: An electrically bending endoscope includes a driven unit including an insertion portion extending in a longitudinally axial direction, and a driving unit to be attached to and detached from a proximal end portion of the driven unit. The driving unit includes a driving portion to produce driving force, and a driving transmission mechanism to transmit the driving force and including a driving coupling portion. The driven unit includes a bending portion provided in the insertion portion and to be operated to be bent by the driving force, and a driven transmission mechanism to transmit the driving force to the bending portion and including a driven coupling portion to be coupled with and separated from the driving coupling portion. The driving unit includes a detecting portion connected to the driving portion and to detect a load produced in the driving transmission mechanism corresponding to a load in the driven transmission mechanism.