DE1257403B - Bar grating with parallel hollow profile bars - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

E04c

German class: 37 b -1/82

Number: 1257403

File number: M 63911 V / 37 b

Filing date: January 25, 1965

Open date: December 28, 1967

The invention relates to a bar grating with parallel hollow profile bars, in particular is suitable for covering air shafts, heaters and the like.

There are already cover grids or cover mats known in which individual mostly made of rubber or rubber-like plastic existing rectangular shaped elements through parallel holes in the Individual elements guided rods are connected to a grate or a mat. Because the cross section this, the cohesion of the mat effecting rods can not be chosen arbitrarily large, have such mat grids only have a low resistance to bending or lateral bending and are consistently only used there on fixed documents.

Other grids in which bars parallel to each other are firmly connected to each other by cross bars can be laid unsupported. However, these grids must have the required dimensions in the factory produced and transported to the laying site. You can attend with simple means the construction site are not distracted. This makes the rust expensive,

The object of the invention is to provide the mentioned Nach- as to avoid parts and to create a cantilevered bar grating that consists of a few Basic elements can be plugged together to any length.

This is achieved according to the invention in that in the two openings of the hollow profile rods the legs of U-shaped or comb-like connectors are pushed in or pressed in.

For the hollow profile bars, semi-finished metal is expediently used, while the U-shaped or comb-like connectors made of plastic.

The outer legs of the connector advantageously each point in the direction perpendicular to the profile rods half the thickness of the inner legs, so that two legs each at the connection points are inserted into a profile bar by two different connectors.

Such a bar grating constructed from profile bars only has metals of a certain alloy that do not conduct electricity and are joined together by the plastic connector are, so that an electrochemical corrosion is largely prevented, since there is no electrolytic Can form battery elements.

In an advantageous embodiment, the outer and inner cross-section of the hollow profile bars of the bar-bar grating with parallel hollow profile bars

Applicant:

Erwin Müller K. G. metal goods factory,

Lingen, Breslauer Str. 34-38

Rostes selected approximately rectangular, so that the plastic connectors are rectangular at the ends of the legs Have a cross-section with half the width of the clear cross-section of the hollow profile rod, while the middle legs of the comb-like connectors are at least the full inner width of the Own hollow profile rod. By appropriate profiling of the legs of the connector can through the Deformation occurring during the press-fit process means that the connectors are firmly clamped to one another and secured with the profile rods.

If the bars of the connector are made longer on one side of the bar grating than on the other Side, bar gratings that run in bends can also be produced. Rounder when used Profile bars for building a bar grating according to the invention, the legs of the connector have a circular cross-section.

The invention is illustrated below using an exemplary embodiment in the drawing explained. It shows

F i g. 1 the top view of a bar grating according to the invention,

F i g. 2 shows a section through the profile bar in a bar grating and

F i g. 3 shows a section along the line AB of FIG.

Several profile bars 1 with a rectangular tube cross-section are closed by a comb-like connector 2 connected to a bar grating. The comb-like connector 2 has two narrow outer legs 4 and two wide inner legs 5. While the narrow legs 4 are at least half the width of the inner cross-section of the profile bars 1 have a corresponding thickness, are the middle legs 5 executed in the full thickness of the inner cross-section of the profile bars 1. To the outer legs 4 further comb-like connectors can be connected in such a way that the corresponding outer narrow legs with those of the further connector are pressed into a profile bar.

In the upper half of FIG. 1 is the connection of the profile bars 1 by means of U-shaped connectors 3, 3 ',

709 710/112

Claims (3)

3 ″, the legs 6 of which have a thickness corresponding to half the width of the inner cross section of the profile rods 1. As a result, as FIG , alternating U-shaped and comb-like connectors. As is readily apparent, grids of any length can be assembled on site in this way, with only series-produced connectors made of plastic and profile rods made of metal are required. 1. Bar grating with hollow profile bars lying parallel to one another, characterized in that that in the two openings of the hollow profile bars (1) the legs (4, 5 and 6) U-shaped or comb-like connectors (2 or 3) are inserted or pressed. 2. Bar grating according to claim 1, characterized in that the connectors (2 and 3) made of plastic exist. 3. Bar grating according to spoke or 2, thereby characterized in that the outer legs (4 and 6) of the connectors (2 and 3) each in the direction perpendicular to the profile bars (1) have half the thickness of the inner legs (5). Considered publications:
German utility model No. 1887 002,
1862966. 1 sheet of drawings 709 710/112 12.67 © Bundesdiuckerei Berlin