MY176403A - Guide tube for guiding cable of internal observation device and cable guiding method - Google Patents

Abstract

[Object] To allow an observation image capturing part provided to a tip end of a cable of an internal observation device to smoothly approach a portion to be observed. [Means for Solution] For inserting into a pipe bore (41) a cable (2) of an internal observation device (I), the cable (2) is pushed into the pipe bore (41) to force an observation image capturing part (21) provided proximate a tip end of the cable to approach a portion to be observed (70) when performing internal observation of the pipe bore (41) of a pipe]ike structure (40) with the internal observation device (1). A guide tube (I 0) having an outside diameter substantially equal to an internal diameter of the pipe bore (41) to a degree that the guide tube ( I 0) can be inserted in the pipe bore (41 ), and having an internal diameter substantially equal to an outside diameter of the cable (2) to a degree that the cable (2) can he inserted therein, is inserted into the pipe bore (41) that reaches the portion to be observed (70) and the cable (2) is inserted into a tube interior of the guide tube ( 10) from an outside of the pipe bore. There may be provided a curved part (12) proximate a tip end of the guide tube ( 10), the curved part (12) being configured to deflect a direction in which the tip end of the cable (2) that is inserted in a tube interior of the guide tube ( 10) is directed.