Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Outside corner or peripherally bordered
Patent
1989-02-09
1992-10-27
Scherbel, David A.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Outside corner or peripherally bordered
403402, B25G 336
Patent
active
051578859
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a door leaf or casing frame, assembled of hollow sections and corner connecting angles by a linking means, the frame profiles being in particular reinforced plastic profiles, in which frame a joint plate is disposed in the linking joints or mitre joints of the frame corners and the corner connecting angles are integrated with said joint plates. Particularly considered here are frames of reinforced plastic profiles, having longitudinal reinforcing fibers, particularly glass fibers; such profiles can also comprise reinforcing fibers extending in transverse direction or nondirectionally disposed, particularly glass fibers; the DUROPLASTIC profiles can also comprise only nondirectionally disposed reinforcing fibers, particularly glass fibers.
A frame of such kind is known from British A 2 150 182. Reinforcing bars of metal are disposed in this known frame in the plastic hollow sections, and the T-pieces are screwed together with said reinforcing bars. The use of a binder is only additionally considered. High expense is involved in providing the reinforcing bars and in the screwing of the corner connecting angles with said bars; also much time is involved in producing such frames.
The object of the invention is to provide a leaf or casing frame of the described kind, where the corner joints can be produced in a simple way and provide satisfactory stability and long service life. Such characteristics are particularly desirable in Duroplastic frame profiles with longitudinally extending reinforcing fibers. The technique to be created must above all make possible the processing of plastic profiles of glass reinforced polyester plastic to provide stable and durable door leaf or casing frames for windows, doors, or the like.
The door leaf or casing frame of the above kind is characterized in the invention in that channels are provided in each joint plate leading to the places where the corner connecting angles are disposed; said channels being connected to each other and to at least one opening on the circumference of the joint plate. This design can very well satisfy the objective outlined above. This design can also provide without any problems good distribution of the binder over the areas where the corner connecting angles and the joint plates abut the hollow sections, thus securing a durable joining. It is possible in this connection to apply to the joining areas a gluing or adhesive composition in a single spraying step.
A preferred embodiment of the frame of the invention is characterized in that the joint plate extends up to the sight areas of the frame. This achieves a satisfactory fully planar distribution of the binder over the intersecting areas of the hollow sections located on the corners of the frame and the joining of the joint plates with the hollow sections covering said intersection areas; this is important not only for good stability of the joint, but it also takes care of good sealing of the intersection areas of the hollow sections of the frame against ambient influences. On the intersecting areas of the profiles the ends of reinforcing fibers provided in the profiles are to a lesser degree protected by the plastic forming the profiles and by protecting said areas against ambient influences the service life is significantly extended. An embodiment particularly advantageously provided for achieving good sealing of the intersecting areas of the door leaf or casing frames on the connecting or mitre joints is characterized in that the joint plate has edge ribs at least on the peripheral sectors extending along the sight areas of the frame, said ribs extending to the side and covering the peripheral edges of the hollow sections. This also provides good protection for adhesives or binders which are inserted for joining parts at the corners of the frames against harmful ambient influences. This embodiment achieves also in a simple way a pleasing appearance of the connecting or mitre joints by overlapping or covering the peripheral edges of the hollow sections by the sidewise e
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Rock Siegfried
Wertitsch Werner
Contacting Gesellschaft fur Wirtschaftskontakte Gesellschaft m.b
Scherbel David A.
Van Patten Michele A.
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