DE1237384B - Internal clamping connection for hollow profiles, in particular for the construction of framework bodies for the plastic insulation of refrigerators - Google Patents

Description

GERMAN AT THE PATENT OFFICE

EDITORIAL

DeutscheKI .: 47 a-3

Number: 1 237 384

File number: L 44985 XII / 47 a

J 237 384 Filing date: May 27, 1963

Opened on: March 23, 1967

The invention relates to structural bodies composed of hollow profiles, in particular for Reinforcement of the plastic insulation of refrigerators. It is based on internal clamp connections for the hollow profiles, consisting of angular core parts inserted into the ends of the hollow profile parts with outer surfaces adapted to the hollow profiles, which by spreading action against the hollow profile inner walls are pressed and thus connect adjoining hollow profiles with one another, wherein the core parts have recesses in a part of their longitudinal extent, the one Have a sloping base area and adjoin the longitudinal channels in the core parts. In these recesses are used to produce the clamping connection, wedge-shaped expansion parts.

With internal clamp connections of the type described, it is still difficult for unskilled workers who Use clamping parts in the hollow profiles to be connected, as the recesses on one side of the Core parts are attached and thus the wedge-shaped inserted into the recesses of the clamping parts Spreader pieces have freedom of movement to one side when inserting.

In contrast, the object of the invention is to provide internal clamping connections of the type described at the outset Kind to the extent that the installation of the parts and the assembly to the scaffold body can also be carried out by unskilled or semi-skilled workers without special devices.

To solve this problem, the invention provides that the core parts consist of two or three parts assemble, the parting plane running in the diagonal section plane and the recesses are arranged starting from the partial plane. The division into two parts refers to the core parts that serve to connect two butting hollow profiles, while the three-part division concerns core parts, which are required for the corner connection of a spatial frame body made of hollow profiles.

The invention thus makes assembly easier in a simple manner insofar as the assembly can be carried out effortlessly even by unskilled or semi-skilled workers without special devices. Due to the division of the core pieces in a diagonal section plane and the corresponding arrangement of the recesses starting from this plane, the expansion parts are completely enclosed by the parts of the cores and apart from the short axial mobility until they are clamped, they no longer have any degree of freedom of movement. All parts can easily be internal clamped connection for hollow profiles,
in particular for the construction of frameworks for the plastic insulation of refrigerators

Applicant:

Licentia Patent-Verwaltungs-G. mb H.,
Frankfurt / M., Theodor-Stern-Kai 1

Named as inventor:
Günter Dunkel, Kassel

be installed together, which makes the installation work much easier. From the division of the Core parts according to the invention there is the further advantage that the core parts are considerably larger in area rest on the profile inner walls and thus greater frictional forces can be achieved.

The invention is described below with reference to two exemplary embodiments shown in the drawing explained in more detail. Here shows

F i g. 1 Individual parts of the internal clamping connection for the assembly of two hollow profile parts lying at right angles to one another in the disassembled state in a perspective view,
2 shows a cross section through the internal clamping connection at the middle point of the expansion parts and

3 shows a partial longitudinal section through the internal clamping connection; in

F i g. 4 are, again in a disassembled state, the parts of an internal clamping connection for three hollow profile parts arranged at right angles to one another, i.e. a spatial corner connection, is shown.

From the drawing, the internal clamping connection for hollow profiles 8, here for example of a square shape Cross-section to recognize. From such hollow profiles in particular scaffolding for the Plastic insulation of refrigerators can be built up. The internal clamp connection consists of in the hollow profiles 8 inserted core parts 1,2 with outer surfaces adapted to the hollow profiles, which through Spreading action are pressed against the hollow profile inner walls and thus two adjoining one another Connect hollow profiles 8 together. The core parts 1.2 point to a part of their Longitudinal extent, recesses 5, 6, which have a sloping base. In these

709 520/197

Claims (1)

Recesses are wedge-shaped expansion parts 3, 4 used. The core parts 1, 2 are designed in two parts, the dividing plane running in the diagonal section plane, and the recesses proceed from this section plane, so that the expansion parts inserted into the recesses are enclosed on all sides by the core parts during assembly. The core parts also have longitudinal channels 9, which are also halved by the diagonal section plane and only complement each other when they are assembled to form a closed channel. Via these channels, the expansion parts can be driven from the corners using suitable tools, such as pins, against the inner surface of the core parts, whereby the outer surfaces of the core parts firmly rest against the inner walls of the hollow profiles. If the clamping connection is to be detachable, the expanding pieces can be brought back by inserting a pull pin with thread through the channels into the threaded holes then provided in the expanding pieces. As the F i g. 4 shows that the core parts for producing a spatial corner connection consist of three angular parts 11, 12, 13 with recesses 17, 18, 19, which can be clamped in the hollow profile parts by corresponding expansion parts 14, 15, 16. Claim: 1. Internal clamping connection for hollow profiles, in particular for the construction of frameworks for the plastic insulation of refrigerators, consisting of angular core parts inserted into the ends of the hollow profiles with outer surfaces adapted to the hollow profiles, which are pressed against the inner walls of the hollow profile and thus connect adjoining hollow profiles with one another, wherein the core parts have recesses in part of their longitudinal extent which have a sloping base, to these recesses longitudinal channels adjoin and wedge-shaped expansion parts are inserted into them, characterized in that the core parts (1, 2 or 11, 12, 13) are mutually attached composed of two or three parts, the dividing plane running in the diagonal section plane and the recesses (5, 6 or 17, 18, 19) being arranged starting from the partial plane. Considered publications:
German Patent Nos. 932 876, 1 013 410;
German exposition no.1100919,
596. 1 sheet of drawings 709 520/197 3.67 © Bundesdruckerei Berlin