Joints and connections – Member ends joined by inserted section – Expansible section
Patent
1985-11-19
1987-08-18
Kundrat, Andrew V.
Joints and connections
Member ends joined by inserted section
Expansible section
403172, 403295, F16B 700
Patent
active
046873660
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a corner connecting arrangement for lengths of profile or similar elements which are provided with cavities and can be connected at an angle to each other, and which can be connected releasably by means of connecting devices.
The main object of the present invention is primarily to provide an arrangement of the above-mentioned kind which makes it possible to connect together lengths of profile or similar elements which have a cavity extending either continuously or at intervals in the longitudinal direction of the elements, at an angle to each other irrespective of the cross-section shaping of the said cavity, simply and effectively and so that they can be released easily again.
The said object is achieved by means of an arrangement according to the present invention which is essentially characterised in that a connecting piece, which has at least two projections disposed at an angle to each other extending out from a common intermediate part and provided with a sloping connecting surface, is provided with a sloping connecting surface, is provided with an abutment surface appertaining to each of the projections which is designed to co-act with an appropriate screw device which can co-act with a wedging element which can be displaced over the connecting surface of the said connecting piece and is designed to move over the said connecting surface when the associated screw device is screwed in or out, thereby increasing the effective width of the projection in one screwing direction in order to achieve clamping co-action with the length of profile, and reducing the said width in the opposite screwing direction in order to effect disengagement.
The invention is described below by way of a preferred embodiment example, with reference to the accompanying drawings, on which
FIG. 1 is a cut away perspective view of part of a corner connecting arrangement designed according to the invention, ready for connection,
FIG. 2 is a cross-section through the arrangement in the said state,
FIG. 3 again shows a cut away perspective view of part of the said arrangement, disposed in a connecting state,
FIG. 4 is a cross-section through the arrangement in the said connecting state,
FIG. 5 is a perspective view of part of the arrangement in the assembled state, looking at an angle from the front,
FIG. 6 is a perspective view of a connecting piece appertaining to the arrangement, and
FIG. 7 is a perspective view of the connecting piece from the diametrically opposite side.
According to the invention it is proposed to use a corner connecting arrangement 3 which comprises a connecting piece 4, a number of wedging elements 5 and a number of screw devices 6 in order to make it possible to connect together at an angle to each other and so that they can be released easily a number of lengths of profile 1 or similar elements which have a cavity 2 extending in the longitudinal direction of the profile or element. A connecting piece 4 comprises a plurality of, and at least two, projections 8, 9, 10 extending out from a common intermediate part 7 at the desired angle relative to each other. In the example shown on the drawings the said projections 8-10 extend at right angles from the intermediate part 7, in the manner of X, Y and Z co-ordinates, respectively.
Each projection 8-10 has an abutment surface 11, 12, 13 appertaining to it, preferably consisting of a slit 14-16 extending through a wall element 17-19 disposed transverse to the longitudinal direction of its respective projection and the outer face 17A-19A of which is expediently curved. Expediently, the said respective slits 14-16 are open at one end 14A, 15A, 16A and extend at an angle to the inner central longitudinal plane L of the associated projection. To enable the connecting piece 4 to be cast in one piece, for example in a plastic material, the slits 15, 16 are expediently disposed at two of the abutment surfaces 12, 13 to extend at an angle such that the said slits 15, 16 are substantially at right-angles to a wall element 9A, 10A appertain
REFERENCES:
patent: 3545796 (1970-12-01), Nicholls
patent: 4078276 (1978-03-01), Nunes
patent: 4101229 (1978-07-01), Weibull
patent: 4464076 (1984-08-01), Leibhard
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