JPS5976245A - Composite material consisting of hard foamed substance core and coating layer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention consists of a rigid foam core and, in particular, two metal covering layers, the longitudinal edges of which are screwed to the substructure through an inner joint and with a patch between them to form one piece. Concerning composite materials that can be assembled into longitudinal bonds.

In the tongue-and-groove longitudinal connection known, for example, from German Utility Model No. 1986169, the inner furrow layer is held in place via abutment arms and screws. A synthetic profile is required for the transmission of forces to the outer covering layer and for the connection with this outer covering layer. Parts of such construction cannot be used as composites without the use of such synthetic profiles. This is because high point loads occur in the connection area, which induces failure of the component. However, internal screwing tends to be applied in many cases - mainly for optical reasons, for example to improve the appearance of the screwed part and to avoid local deformations in the area of the fastening part.

The problem underlying the invention is therefore to create a composite material which is capable of inducing high fixing forces by means of internal screw fastenings, even in a composite material without the use of synthetic profiles.

In order to solve this problem according to the invention, it is proposed in a composite material of the type described in detail at the outset that the support is formed by a fastening lamella provided in a rigid foam core.

With the arrangement according to the invention, a relatively large force-introducing surface and a relatively small surface pressure φ are obtained on the fixed plate, thus making it possible to transmit large forces.

Further, in accordance with other features of the present invention, when the fixed sheet is later incorporated into a rigid foam core, the advantage is that the composite can be produced continuously while simplifying its use.

In accordance with a further development of the invention, it is advantageous for the fastening plate to be U-shaped in cross-section and to be provided with driving-in sharp edges on its legs.

This ensures that the upper covering layer is held in place, for example in the case of a tongue-and-groove longitudinal connection, by engaging the shorter leg into the edge molding of the upper covering layer. At the same time, this arrangement also retains the upper covering layer on the side of the meat, so that another feature of the invention is that, in one longitudinal connection, the fixed connecting lamina on the side of the meat is U-shaped and lattice-shaped. The fixed thin plate on the side is formed with a smooth surface.

The fact that the U-shaped fastening plate is provided with a number of driving sharps of different lengths on its short legs facilitates the driving of the fastening plate into the covering layer.

The invention will be explained in more detail below with reference to embodiments illustrated in the accompanying drawings.

1 and 2, a composite material 2 consisting of a rigid foam core 5 and upper and lower covering layers 4, 5, prepared for a continuous tongue-and-groove longitudinal connection 1. is screwed to the substructure 9 by threaded screws 6 and fastening plates 7, 8 driven into the rigid foam core.

The fixed thin plate 7 driven into the tongue side 10 has a driving sharp part 11
It is formed with a smooth surface.

The fixed plate 8, which is U-shaped in cross-section, has a short leg 12 and a driving sharpening point 16 provided on this leg, the central driving sharpening of which has relatively long dimensions. The groove side 14 is driven into the molded part of the upper υ layer 4.

Assembly is performed as follows. That is, a rear lower structure in which these are arranged in a continuously finished composite material 2?
, a lower covering layer 5, a rigid foam core 6 and a fixed lamella 7,
Drill a hole through 8. A screw 6 with threads is then screwed into the hole. At this time, when the U-shaped lower structure 9 is used, the pieces 14 are used for tightening to facilitate assembly.

[Brief explanation of the drawing]

Figure 1 is a front view of a portion of the assembled and finished wall section, Figure 2 is a side view corresponding to Figure 1 in a cross section taken along line ■-H in Figure 1, and Figure 6 is Figure 1. Figure 4 is an enlarged sectional view taken along the line ■-■, and Figure 4 is a perspective view of the two fixed thin plates. The symbols in the figure are: 6...Hard foam core 7.8...Fixed thin plate-III FIG, 1 1■ FIG 2

Claims (1)

[Claims] 1. Consisting of a hard foam core and, in particular, two metal covering layers, the longitudinal edges are screwed to the lower structure through an inner joint and a guard material to form one longitudinal axis. Composite material which can be assembled into a bond, in which the patch is formed by fixed plates (7, 8) arranged in a rigid foam core (3). Composite material according to claim 1, characterized in that the fixing plates (7, 8) are subsequently integrated into the rigid foam core (3). The fixed thin plate (8) has a U-shaped cross section,
Composite material according to claim 1 or 2, characterized in that the legs are provided with driving sharp parts (11)'. 4. In the case of tongue-and-groove joints, the fixed thin plate on the groove side (8)
The composite material according to any one of claims 1 to 3, wherein the fixed thin plate (7) on the tongue side is formed in a U-shape and has a smooth surface. 5. In accordance with claims 1 to 4, the U-shaped fixing plate (8) is provided with a number of driving sharps (16) of different lengths on its shorter leg. Composite material described in any one of.