The subject of the invention is an overlay floor for motor vehicles, applied on the mother floor of the vehicle, intended to fix seats, wheelchairs or other equipment therein.

From the description of the Polish utility model no. Ru71588, an overlay floor is known, which has longitudinal mounting sockets in which mounting rails with a shaped groove for connecting elements of the equipment are placed. The overlay floor plate is layered, the bottom layer of which is made of a load-bearing plate, the top layer is a decorative plate, and between the load-bearing plate and the decorative plate there is a filling layer. In the decorative plate and in the filling layer, longitudinal mounting sockets are made, in which the mounting rails are embedded, and the bottom of the mounting sockets is a load- bearing plate and the sides of the mounting rails closely adjoin the side walls of the mounting sockets. The mounting rails have longitudinal flanges protruding along their entire length beyond the outline of the mounting sockets, so that the mounting rails lie with the flanges on the upper surface of the decorative plate. There is a shaped groove with a cross-section in the form of an inverted T-letter between the flanges. The mounting rails are attached to the walls and bottoms of the mounting sockets with glue.

From the patent description W020150078288, an overlay floor is known, in which the longitudinal mounting rails are support profiles with longitudinal flanges at the top and with a shaped groove for fixing equipment between the flanges. The profiles have wide bases at the bottom, the bottom surfaces of which are used to place the rails on the vehicle's mother floor, and layered (or monolithic) plates are placed on the top surfaces of the base profiles so that the edges of the plates are below the flanges in the recesses between the flanges and the base. The base profiles presented in the description are high, therefore, in order to eliminate the large deflection of the plate between adjacent rails, support rails are placed in the middle of the distance between the rails, parallel to the mounting rails.

The main plate consists of small pieces that are laid one after the other between the load- bearing rails.

According to the invention, in the overlay floor, the load-bearing rails have a width equal to the width of the longitudinal sockets in the main plate and have a length equal to the length of the longitudinal sockets in the main plate. The load-bearing rails, at least along the side walls, have along their entire length shaped relief cuts for gaskets, which are placed between the side walls of the load-bearing rails and the walls of the longitudinal sockets. The height of the load-bearing rails, measured from the upper surfaces of the wide bases, is at least equal to the thickness of the complete main plate.

The gaskets have top flanges that rest on the top of the main board.

The relief cuts are best provided on the top of the side walls of the load-bearings rails near the surface of the main plate and on the top surface of the load-bearing rails and in the relief cuts, gaslets are placed. The upper flanges of the gaskets lie on the top surface of the main plate.

It is preferred, when the gasket between the side walls of the load-bearing rails and the side walls of the longitudinal sockets is the top covering, in which the holes have a length equal to the length of the load-bearing rails and their width is smaller than the width of the longitudinal sockets by the depth of the relief cuts in the side walls of the load-bearing rails.

The overlay floor according to the invention is an independent part, it is adjusted to a given vehicle, it is self-supporting, it is a good thermal and sound barrier of the interior of the vehicle from the floor. It is possible to freely arrange the vehicle space - to install chairs, wheelchairs, loads. The floor improves the pressure distribution, distributing point loads over its entire surface, it is rigid, which also increases the stiffness of the vehicle and reduces vibrations transmitted to the passengers or the load. The main board can be a sandwich structure with a laminated board at the bottom, on which there is a foam covered with another laminate board and a decorative covering. The installation of the floor according to the invention is simple, as will be explained later in the description.

The subject of the invention is shown in the embodiment in the drawing, in which Fig. 1 shows a perspective view of an overlay floor, Fig, 2 shows a cross-section of the overlay floor, and Fig. 3 shows the same cross-section of another version of the overlay floor.

As shown in Fig. 1, the overlay floor has a shape adapted to the mother floor of the vehicle in which it is to be mounted and is formed of a main plate 1 and load-bearings rails 2 in which seats and sofas are slidably fastened. As shown in Figs. 2 and 3, in the floor plate 1, in this embodiment being a layerd plate, consisting of three layers glued together and with a decorative covering on top, are made longitudinal sockets 1', in which load-bearings rails 2 are placed. The sockets 1' are made in the entire panel of the main board 1 as through, longitudinal holes for the profiles of the load-bearings rails 2. The load-bearings rails 2 have the dimensions of these holes, i.e. their width is equal to the width of the longitudinal sockets 1' in the main board 1 and their length is equal to length of the longitudinal sockets 1' in the main plate 1. The load-bearing rails 2 on the side walls have, along their entire length, relief cuts 2' for gaskets 3, which are placed between the side walls of the load-bearing rails 2 and the longitudinal walls of the sockets 1' The load-bearing rails 2 are slightly higher than the main board 1 (including the decorative covering 5), they slightly protrude above tine level of the main board 1 and thus dirt does not fall into the shaped groove 4 in the load-bearing rails 2, does not contaminate it and does not obstruct the movement of the seats, in the load- bearing rails 2. To additionally protect the shaped groove 4 against contamination, the gaskets 3 have upper flanges 3' which are placed on the upper surface of the main plate 1 , and more precisely on the surface of the decorative covering 5 placed on the upper surface of the main plate 1. As shown in Fig. 2, relief cuts 2 'are made on the upper part of the side walls of the load-bearing rails 2 near the surface of the main plate 1 and on the top face of the load- bearing rails 2 and in the relief cuts 2', gaskets 3 are placed. As shown in Fig. 3, a gasket between the side walls of the load-bearing rails 2 and the side walls of the longitudinal sockets is the upper covering 5, in which the holes have a length equal to the length of the load-bearing rails 2 and their width is less than the width of the longitudinal sockets 1 ' for the depth of the relief cuts 2' in the side walls of the load-bearing rails 2. Flence, a latch is created from this surplus of the covering 5 by whiclithe decorative covering 5 snaps into the relief cuts 2 'of the load-bearing rails 2 and then it becomes a sealing element.

The installation of the floor in the vehicle is simple and results from the design of the overlay floor.

It can be made in various ways, i.e. load-bearing rails 2 are first arranged on the vehicle’s mother floor and glued with the lower bases 2" to the vehicle mother floor. Then, the main plate 1 is placed on the profiles of the load-bearing rails 2 with the seat??? sockets 1' and the gaskets 3 are placed. Another method of installation consists of preparing the complete overlay floor outside the vehicle and fixing the whole on the mother floor of the vehicle. Then the load-bearing rails 2 profiles are inserted from the bottom of the main plate 1 (they can be joined with a layer of glue), then the gaskets 3 are placed from above.

In the version shown in Fig. 3, the main board 1 is placed on the load-bearing rails 2 glued to the mother floor, and then the decorative covering 5 is snapped into the relief cuts 2' of the load-bearing rails 2, sealing the connection of the load-bearing rails 2 with the sockets 1' or the installation is made outside the vehicle, and the whole board is glued to the mother floor of the vehicle.

An overlay floor according to the invention is attached to the mother floor of the vehicle by gluing or screwing, using appropriate reinforcement pads if necessary.