A sheet metal component such as a car door comprises an outer metal sheet 1, with a groove 18, an inner metal sheet 2, with an edge flange 4 engaging the groove 18, and a filling bead layer 6 inserted into the groove 18 between sheet 1 and flange 4. Sheet 1 and the flange 4 are welded together in windows 10, 13 of the layer 6. The filling material 6 may comprise a closed-pored foamed thermoplastic polymer in the form of strip with the windows 10, 13 preformed. A further strip (19, Figure 8) may be placed on the bottom of the groove. The strips may be foamed by heating as part of a paint process. Expansion during heating causes the strips to merge to fill the groove 18 and windows 10, 13 except at locations of welding spots 17. The filling material preferably extends up to an in use lower edge of a water drainage opening (22, figure 10) through the inner sheet 2.
Sheet metal component and manufacturing method therefor
2016-02-10
Patent
Electronic Resource
English
IPC: | B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B23K Löten , SOLDERING OR UNSOLDERING / B62D MOTOR VEHICLES , Motorfahrzeuge / F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile |