| 摘要 |
The invention relates to the building panels, in particular to the precast floor panels. The panel contains the first lateral face (3) and the second lateral face (4), which is placed opposite to the first lateral face (3). The lateral faces (3, 4) may be joined with the corresponding lateral faces of other panels (1, 2). The lateral faces (3, 4) have mating surfaces (11, 21), vertically placed about the outer surfaces (5, 9) of the panels (1, 2). The grooved-and-tongued cut (34), made by the superior prominence (30) and the inferior prominence (31) onto the first lateral face (3), is placed parallel to the first lateral face (3). The tongue (32), made onto the second lateral face (4), is placed parallel to the lateral face (4). The longitudinal recess (35), made into the grooved-and-tongued cut (34), has a mating surface (10), which is placed inclined about the lateral face (5). The engagement element (33), made onto the tongue (32), has an engagement surface (27), which is placed inclined about the outer surface (9) of the panel (2). The mating surface (12) of the grooved-and-tongued cut (34), placed in the region of the first lateral face (3), is situated parallel to the outer surface (5). The mating surface (22) of the tongue (32), placed in the region of the second lateral face (4), is situated parallel to the outer surface (9). The mating surfaces (12, 22) serve as support for the engagement surfaces (17, 27). The mating surfaces (12, 22) and the engagement surfaces (17, 27) are placed without clearance about each other in the coherence state, providing for the contact of the mating surface (11, 21) of the lateral faces (3, 4). The mating surfaces (14, 15) of the grooved-and-tongued cut are placed parallel to the outer surface (5) in the region of the grooved-and-tongued cut bottom (7). The mating surfaces (24, 25) of the tongue are placed parallel to the outer surface (9), in the region of the tongue end face (8), at the same time the mating surfaces (14, 24; 15, 25) are placed without clearance about each other in the coherence state. New in the present invention is the fact that the mating surface (12) of the grooved-and-tongued cut and the mating surface (22) of the tongue are completely covered by the engagement surface (17) of the grooved-and-tongued cut and the engagement surface (27) of the tongue and placed parallel to the outer surface (5). The space between the engagement surface (17) of the grooved-and-tongued cut and the mating surface (12) of the grooved-and-tongued cut is greater than the interval between the mating surface (14) of the grooved-and-tongued cut and the mating surface (15) of the grooved-and-tongued cut.Claims: 5Fig.: 3<IMAGE> |
