US Patent 12011146 Method of assembly of an endoscope control system

A method of assembly of an endoscope control system including: holding a first control wheel unit in a position; moving a second control wheel unit in an assembly direction to position the second control wheel unit on the first control wheel unit; moving a housing frame in the assembly direction to position the housing frame on the second control wheel unit; moving a second shaft unit in the assembly direction so that a second shaft is positioned to extend through the connection hole of the housing frame and snaps into engagement with the second control wheel unit; and moving a first shaft unit in the assembly direction so that a first shaft is positioned through the second shaft and snaps into engagement with the first control wheel unit.