JPS61165896U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a horizontal sectional view taken along - in Fig. 1, and Fig. 3 is a horizontal sectional view taken along - in Fig. 1.
The figure is a vertical cross-sectional view showing a known inner staircase structure of a ship's accommodation area, and FIG. 4 is a horizontal cross-sectional view taken along the line - in FIG. 3. 1... Stair wall, 1a... Compartment door, 1b, 1c
, 1d...Wall surface, 2, 2l, 2u...Deck, 3...
...Living block, 4...Stairs block, 4a...
...Landing, 4b, 4c...Middle landing, 4d, 4e...
...Stairs, 4th floor...Rag piece.

Claims (1)

[Scope of utility model registration request] In the round staircase structure in the ship's accommodation area, which is placed in the enclosing wall for the vertical staircase with a square cross section formed in the hull superstructure consisting of multiple accommodation blocks, each accommodation area block is arranged on the same vertical line and is the same as each accommodation area deck. A plurality of landings provided on the level, and a plurality of intermediate landings arranged on a vertical line parallel to the vertical line and arranged in a staggered manner on a vertical plane including the two vertical lines in cooperation with the plurality of landings. and a vertical stairway block having an integral structure comprising a plurality of stairs connecting each of the intermediate landings to the upper and lower landings in a dogleg shape, which is inserted and fixed into the vertical stairway surrounding wall. Inner stairway structure in living area.