Improved inspection trapdoor

Abstract

The inspection hatch consists of: a fixed frame (TF), a movable frame (TM), a plate connected to the movable frame (TM) and connecting elements (5.6) for connecting the movable frame (TM) to the fixed frame (TF), wherein at least one of said frames (TM, TF) consists of at least three segments (1, 2) with ends (11, 21) cut at an angle of 90° and at least three corner parts (3, 4), each corner part connecting two adjacent segments (1, 2), and in such a way that they are placed crosswise; the corner part (3, 4) contains a central element (30.40) intended to rest on the ends (11, 21) of two adjacent segments (1.2) and two side inserts (31, 41) protruding from the central element (30. 40) so that it can be connected to the segments (1, 2); wherein the central element (30, 40) and the side inserts (31, 41) of the corner part (3, 4) are made of one piece.An inspection trapdoor comprises: a fixed frame (TF), a movable frame (TM), a panel connected to the movable frame (TM), and connection means (5, 6) for connecting the movable frame (TM) to the fixed frame (TF); wherein at least one of said frames (TM, TF) comprises at least three sections (1, 2) with ends (11, 21) cut at 90°, and at least three corner pieces (3,4), wherein each corner piece connects two adjacent sections (1, 2) in an arrangement wherein they are disposed transversally; the corner piece (3, 4) comprises a central portion (30, 40) suitable for abutting against the ends (11, 21) of two adjacent sections (1, 2) and two lateral inserts (31, 41) that protrude from the central portion (30, 40) in such a way to be coupled with the sections (1, 2); wherein the central portion (30, 40) and the lateral inserts (31, 41) of the corner piece (3, 4) are made in one piece.