plug in device

Abstract

By causing a screw receiving portion 20e to protrude from a cord fastening device 150 side of a main frame 20 and by forming the screw receiving portion 20e in a cup-like stepped shape that is recessed from a lower-side chain cover 30 side toward a lower surface side of the main frame 20 by press working or the like of a sheet metal material, a thickness (H-L) of a bottom portion of the cup shape in which a screw hole is formed can be formed to be equal to a plate thickness t of the main frame 20, and a required screw hole depth can be uniformly and accurately secured while maintaining a required minimum plate thickness. Further, a depth L of a concave portion of the screw receiving portion 20e is formed to be a depth such that a distal end portion of a screw 130 to be used does not protrude from the main frame 20, and thus interference between the distal end portion of the screw 130 and the lower-side chain cover 30 can be surely avoided.

Description

technical field [0001] The present invention relates to an insertion device having an insertion portion inserted into a subject. Background technique [0002] In recent years, insertion devices inserted into the subject, such as endoscopes, have been widely used in the medical and industrial fields, and various observations and treatments can be performed by inserting a long and thin insertion portion into the subject. As such an insertion device, the insertion part of an endoscope has a known structure in which a bending part can be bent freely in multiple directions. The tip bends in the desired direction. [0003] The bending portion provided in the insertion portion is usually configured to be bendable in four directions, for example, up and down, left and right, by connecting a plurality of bending pieces along the longitudinal axis of the insertion portion with rivets. A wire is connected to the bending block located on the front end side among the plurality of bendi...

AI Technical Summary

Problems solved by technology

[0008] In this case, it is also conceivable to use a screw member of a special length so that the front end does not always protrude from the frame, but since it is a special screw member, not only the cost increases, but also because the part where the front end of the screw interferes is a part, Therefore, it is necessary to perform work while distinguishing from screw parts of other lengths, which will lead to deterioration of workability and complicated management.

[0009] In addition, there is also a method of adjusting the plate thickness of the frame to use a standard length screw member that is not a special length, but it is difficult to realize the further lightness of the operation part by making the plate thickness as thin as possible as the original goal. Quantify

Images