| 摘要 |
Sealing clothing of small clothing door pressed and locked by pressing mechanism on the frontal surface of the tetrahedron body has an frontal flange (14) of the body (12) of tetrahedron and overlapping plank (21) of small clothing door (20) which is build-up as circular and is provided with minimum one continual circular sealed edge (26, 16) on one or everyone of their adjacent contact surfaces (15) with the overlapping diameter over the marginal corners of the walls (13) of the opening (10). In the case of creating of paired or more opposite seal edges (26, 16) creating interannular labyrinths (27) each subsequent external sealing edge (26) is created in the height corresponding to 1,0 - 1,2 multiple of the height of internal or neighboring internal sealing edge (16). Further on small clothing door (20) are equipped by clamping safety (25) with pressing arm in the shape of semicircle, while pins (28) of pressing arm (24) are toward the level of bearing surface (15) located in the distance corresponding to thickness of small clothing door (20) and elements of their pressure mechanism.
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