Joints and connections – Miter joint – Connector bridges inner or outer periphery
Patent
1992-05-26
1995-01-03
Reese, Randolph A.
Joints and connections
Miter joint
Connector bridges inner or outer periphery
403403, 403282, 403205, F16B 1202
Patent
active
053780779
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a shaped connecting member or piece for connecting structural profile members, in particular door or window casement sections, on which includes at least one attachment leg that can be inserted into an attachment chamber of the profile member and fixed in position therein.
In connection with the manufacture of door and window frames made of aluminum extruded sections it is, for example, known to miter the sections and to connect them together with corner connectors. The corner connectors are either cut extruded sections or are made of zinc diecasting, which have attachment legs that are inserted into cavities of the mitered aluminum sections, and cementer therein or fastened with beads or the use of screws or expansion pins. Expensive machines are necessary for beading, especially to profiles beaded at right angles to the profile direction. The possibilities of screwing or pinning are labor and wage intensive. If, during the insertion of an attachment leg into the cavity, a permanent press fit of the attachment leg in the cavity is to be achieved from the beginning owing to the specified tolerances, a great deal of machining cost also would be necessary.
Corner connectors known from German DE-OS 23 65 332 include attachment legs provided with ribs which extend in the longitudinal direction and which taper off in the direction of the attachment leg. This corner connector is driven into the cavities of the frame pieces that are filled with a plastic adhesive and additionally is fastened with conical grooved pins. Such corner connectors demand not only labor intensive fabrication but also the production of the frames requires a high machine cost.
SUMMARY OF THE INVENTION
Therefore, the object of the invention is to design a shaped connecting member or piece of the aforementioned type in such a manner that its attachment leg can be inserted easily, i.e. for example by hand, into an attachment chamber bordered by metal such as aluminum and still can be reliably fixed in position therein, so that an adequately stable corner connection for, e.g., door frames, window frames or the like can be produced.
This object is achieved in accordance with the invention in that at least one resilient element provided in the region of at least one attachment leg projects over one side surface of the attachment leg in a manner such that, when the attachment leg is inserted into the attachment chamber, at least one outer segment or portion of the resilient element gives way elastically toward the inside and blocks the attachment leg from pulling out of the attachment chamber.
Owing to the invention, the resilient element can bend when the attachment leg is inserted into the attachment chamber of the structural profile and can slide flexibly on the inner wall of the attachment chamber as far as the final position of the attachment leg in the attachment chamber. The fastening of the attachment leg in the final position is achieved in that, when an outward pulling force is applied to the attachment leg, the bent free end of the resilient element catches on the inner surface of the wall of the attachment chamber and in this manner the attachment leg is fixed permanently and reliably in its final position.
Another advantageous feature of the invention is that the resilient element is disposed in the region of a recess in the side surface of the attachment leg. To this end, circumstances permitting, requisite free space is provided so that the free end of the resilient element can compress during insertion of the attachment leg into the attachment chamber. Thus, the attachment leg can be fitted shape-lockingly, but without a great deal of force, into the attachment chamber and can be inserted optionally into attachment chamber by overcoming only small frictional forces. In this manner the attachment leg not only is fixed reliably in the attachment chamber axially, but also it is ensured against rocking sideways since a large area of its outer surface can rest on the inner surfac
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patent: 4822205 (1989-04-01), Berdan
patent: 5040456 (1991-08-01), Hayes
Masco Industries, Inc.
Reese Randolph A.
Spisich George D.
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