CA1223423A - Structural panel made of hollow chambered sections - Google Patents
Structural panel made of hollow chambered sectionsInfo
- Publication number
- CA1223423A CA1223423A CA000472911A CA472911A CA1223423A CA 1223423 A CA1223423 A CA 1223423A CA 000472911 A CA000472911 A CA 000472911A CA 472911 A CA472911 A CA 472911A CA 1223423 A CA1223423 A CA 1223423A
- Authority
- CA
- Canada
- Prior art keywords
- sections
- sides
- structural panel
- pair
- bead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011324 bead Substances 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/0004—Joining sheets, plates or panels in abutting relationship
- F16B5/0008—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates or panels substantially in their own plane, perpendicular to the abutting edge
- F16B5/0012—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates or panels substantially in their own plane, perpendicular to the abutting edge a tongue on the edge of one sheet, plate or panel co-operating with a groove in the edge of another sheet, plate or panel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
TITLE OF THE INVENTION:
STRUCTURAL PANEL MADE OF HOLLOW CHAMBERED SECTIONS
ABSTRACT OF THE DISCLOSURE:
In a structural plate or panel (1) made of hollow chambered extruded sections (2, 2') which are interconnected by weld-ing, the sections (2, 2') each comprise an upper and a lower cover sheet 4 interconnected by struts (5) arranged between the cover sheets. The sections (2, 2') may quickly and accurately be pushed together into alignment in prepar-ation for the welding, especially by a robot. For this purpose the sections (2, 2') have an end strut (5a) with nose-like projections (6) on one narrow side. Lengthwise extending beads (8) and cover sheet rims (4a) are provided on the opposite narrow side. When two such dissimilar sides are interlockingly pushed together, a welding trough (10) with beveled edges (9) is formed. The interlocking features may be provided on the wide sides rather than on the narrow sides. In both instances a sufficient tempor-ary interlocking force is achieved to hold the sections in place for the welding which makes the interlocking perma-nent.
STRUCTURAL PANEL MADE OF HOLLOW CHAMBERED SECTIONS
ABSTRACT OF THE DISCLOSURE:
In a structural plate or panel (1) made of hollow chambered extruded sections (2, 2') which are interconnected by weld-ing, the sections (2, 2') each comprise an upper and a lower cover sheet 4 interconnected by struts (5) arranged between the cover sheets. The sections (2, 2') may quickly and accurately be pushed together into alignment in prepar-ation for the welding, especially by a robot. For this purpose the sections (2, 2') have an end strut (5a) with nose-like projections (6) on one narrow side. Lengthwise extending beads (8) and cover sheet rims (4a) are provided on the opposite narrow side. When two such dissimilar sides are interlockingly pushed together, a welding trough (10) with beveled edges (9) is formed. The interlocking features may be provided on the wide sides rather than on the narrow sides. In both instances a sufficient tempor-ary interlocking force is achieved to hold the sections in place for the welding which makes the interlocking perma-nent.
Description
3~:Z3 1 FIELD OF THE INVENTION:
The inventi~n relates to a structural panel or plate element made of hollow chambered sections which are interconnected by welding seams. Each hollow chambered section comprises an upper and a lower cover sheet, and at least two struts or partition walls arranged between these outer coversheets.
DESCRIPTION OF THE PRIOR ART:
It is well ~nown in the production of structural plates or panels out of hollow chambered sections, to shape the sec-tion edges for preparing a welding seam. It is, however, a problem to achieve an exact alignment of the sections with respect to each other. This exact alignment of the sections is especially necessary and advantageous for automatic weld-ing by a robot.
OBJECTS OF TI~E INVENTION:
In view of the above it is the aim of the invention to achieve the following objects singly or in combination:
to construct hollow chambered sections to be assembled to form a structural panel so thatth~ sections may easily be exactly aligned for a proper orientation relative to one another for an automatic welding by a robot;
~,~
~234Z3 1 to provide such sections with shaped edges and a trough-like groove which forms a seam between adjacent jolned sections to receive and contain a bead of weld metal; and to provide such sections with shaped cooperating projections along the edges for maintaining a proper weld gap of constant width between adjacent joined sections, to act as a guide or stop to achieve accurate alignment of the sections, or even to achieve a mechanical interlocking effect between two adjacent joined sections to hold the sections in place at least during the welding.
SUMMARY OF THE INVENTION:
The above objects have been achieved, according to the invention, by providing hollow chambered sections to be joined to form a structural panel or plate, with cooper-ating nose-like projections extending lengthwise along one of the narrow or wide sides near both outer surfaces of the section. Each section further has beads extending length-wise along the opposite narrow or wide side of the section, whereby these beads protrude inwardly from both cover sheets or from the respective partition walls of the sec-tion. Cover sheet rims or partition wall rims thus remain between the section edge and the inward protruding bead.
When two sections are pushed together, these rims fit over ~3423 1 the nose-like pxojections of the adjacent section in such a way that the sections are held in a coplanar alignment relative to each other with a weld seam remaining between adjacent sections~
The essential advantage of the invention is the absolutely exact alignment of separate extruded sections when they are assembled to form a structural plate element. Such exact alignment is made possible by the nose-like projections and beads extending along opposite narrow or wide sides of the sections. An automatic welder or welding robot may then follow directly along the seams between the sections and fill the wedge shaped gap with a weld bead. The molten weld puddle is effectively contained or sealed by the trough provided under each open welding seam.
BRIEF DESCRIPTION OF T~E DRAWINGS:
In order that the invention may be clearly understood, it will now be described, by way of example, with reference to the accompanying drawings, wherein:
Fig. 1 is a partial sectional view of a structural panel or plate made of hollow chambered sections welded together;
Fig. 2 is an enlarged view of the area II in Fig. 1, before the sections are welded together; and 1 Fig. 3 is a partial perspective view of a multi-chambered section provided with the pro-jections and beads for joining such sec-tions to one another.
DETAILED DE~CRIPTION OF PREFERRED EXAMPLE EMBODIMENTS AND
OF THE BEST MODE OF THE INVENTION:
As shown in Fig. 1, a structural pane] 1 co~prises a plur-ality of hollow chambered sections 2, 2' which are inter-connected by weld beads 3O The sections 2 are preferably extruded aluminum sections. The structural plate or panel 1 comprises thin cover sheets 4 and partitions or struts 5, to form an orthotropic plate; i.e. the plate is very stiff in the direction of the struts 5, but relatively flexible in a direction perpendicular to the struts 5. This arrange-ment gives the sections optimal strength and loadability characteristics for certain purposes, such as for wall ele-ments of chassis structures for motor vehicles, or for cabin walls. Furthermore, the hollow chambered sections 2 may be produced at very low cost compared to riveted or screw-fastened structural elements, and maintenance costs are low.
Especially because the sections 2 are practically corrosion-free, the finished structural plates or panels have a long lifespan of durability.
The enlarged view of Fig. 2 shows the interconnection of sections 2 and 2' before they are welded togetherO The left-hand section 2 is closed off on a narrow side by an end strut 5a. Nose-like projections 6 comprising troughs 7 ~Z234~3 1 for weld-bead containment, protrude outwardly from the end strut 5a. The opposite narrow side shown by the right hand part 2' is left open to form a hollow chamber. However, beads 8 protrude inwardly from the inner surfaces of upper and lower cover sheets 4 and extend completely along the edges of this narrow side of section 2'. A thicker cover sheet rim 4a extends between the bead 8 and the outer edge of the section 2'.
The outer edge of the cover sheet rim 4a and the adjacent outer edge of the end strut 5a comprise bevels 9 to form a weld gap 10 for receiving the weld bead 3. As can be seen, due to the interlocking effect between the beads 8, rims 4a, and projections 6, two sections 2, 2' may quickly be pushed together into proper alignrnent with each other, whereby the weld seam or gap 10 is automatically defined in prepara-tion for a welding.
The inner clearance between two rims 4a on the one hand and the spacing between two ridges 6' of the projections are so related to each other to provide a form fit between two connected sections 2, 2' sufficient to hold the sections together at least during welding. The projections 6 may be provided with slanted ramps 6" for facilitatinghe pr~jections 5 to be pushed into the clearance be~ween two rims 4a. Incident-ally, the horizontal length of the projections 6 and of the rims 4a determine the size of the gap or seam 10 and hence the size of the welding bead.
1 Although the invention has been described with reference to specific example embodiments, it is to be understood, that it is intended to cover all modifications and equiva-lents within the scope of the appended claims.
The inventi~n relates to a structural panel or plate element made of hollow chambered sections which are interconnected by welding seams. Each hollow chambered section comprises an upper and a lower cover sheet, and at least two struts or partition walls arranged between these outer coversheets.
DESCRIPTION OF THE PRIOR ART:
It is well ~nown in the production of structural plates or panels out of hollow chambered sections, to shape the sec-tion edges for preparing a welding seam. It is, however, a problem to achieve an exact alignment of the sections with respect to each other. This exact alignment of the sections is especially necessary and advantageous for automatic weld-ing by a robot.
OBJECTS OF TI~E INVENTION:
In view of the above it is the aim of the invention to achieve the following objects singly or in combination:
to construct hollow chambered sections to be assembled to form a structural panel so thatth~ sections may easily be exactly aligned for a proper orientation relative to one another for an automatic welding by a robot;
~,~
~234Z3 1 to provide such sections with shaped edges and a trough-like groove which forms a seam between adjacent jolned sections to receive and contain a bead of weld metal; and to provide such sections with shaped cooperating projections along the edges for maintaining a proper weld gap of constant width between adjacent joined sections, to act as a guide or stop to achieve accurate alignment of the sections, or even to achieve a mechanical interlocking effect between two adjacent joined sections to hold the sections in place at least during the welding.
SUMMARY OF THE INVENTION:
The above objects have been achieved, according to the invention, by providing hollow chambered sections to be joined to form a structural panel or plate, with cooper-ating nose-like projections extending lengthwise along one of the narrow or wide sides near both outer surfaces of the section. Each section further has beads extending length-wise along the opposite narrow or wide side of the section, whereby these beads protrude inwardly from both cover sheets or from the respective partition walls of the sec-tion. Cover sheet rims or partition wall rims thus remain between the section edge and the inward protruding bead.
When two sections are pushed together, these rims fit over ~3423 1 the nose-like pxojections of the adjacent section in such a way that the sections are held in a coplanar alignment relative to each other with a weld seam remaining between adjacent sections~
The essential advantage of the invention is the absolutely exact alignment of separate extruded sections when they are assembled to form a structural plate element. Such exact alignment is made possible by the nose-like projections and beads extending along opposite narrow or wide sides of the sections. An automatic welder or welding robot may then follow directly along the seams between the sections and fill the wedge shaped gap with a weld bead. The molten weld puddle is effectively contained or sealed by the trough provided under each open welding seam.
BRIEF DESCRIPTION OF T~E DRAWINGS:
In order that the invention may be clearly understood, it will now be described, by way of example, with reference to the accompanying drawings, wherein:
Fig. 1 is a partial sectional view of a structural panel or plate made of hollow chambered sections welded together;
Fig. 2 is an enlarged view of the area II in Fig. 1, before the sections are welded together; and 1 Fig. 3 is a partial perspective view of a multi-chambered section provided with the pro-jections and beads for joining such sec-tions to one another.
DETAILED DE~CRIPTION OF PREFERRED EXAMPLE EMBODIMENTS AND
OF THE BEST MODE OF THE INVENTION:
As shown in Fig. 1, a structural pane] 1 co~prises a plur-ality of hollow chambered sections 2, 2' which are inter-connected by weld beads 3O The sections 2 are preferably extruded aluminum sections. The structural plate or panel 1 comprises thin cover sheets 4 and partitions or struts 5, to form an orthotropic plate; i.e. the plate is very stiff in the direction of the struts 5, but relatively flexible in a direction perpendicular to the struts 5. This arrange-ment gives the sections optimal strength and loadability characteristics for certain purposes, such as for wall ele-ments of chassis structures for motor vehicles, or for cabin walls. Furthermore, the hollow chambered sections 2 may be produced at very low cost compared to riveted or screw-fastened structural elements, and maintenance costs are low.
Especially because the sections 2 are practically corrosion-free, the finished structural plates or panels have a long lifespan of durability.
The enlarged view of Fig. 2 shows the interconnection of sections 2 and 2' before they are welded togetherO The left-hand section 2 is closed off on a narrow side by an end strut 5a. Nose-like projections 6 comprising troughs 7 ~Z234~3 1 for weld-bead containment, protrude outwardly from the end strut 5a. The opposite narrow side shown by the right hand part 2' is left open to form a hollow chamber. However, beads 8 protrude inwardly from the inner surfaces of upper and lower cover sheets 4 and extend completely along the edges of this narrow side of section 2'. A thicker cover sheet rim 4a extends between the bead 8 and the outer edge of the section 2'.
The outer edge of the cover sheet rim 4a and the adjacent outer edge of the end strut 5a comprise bevels 9 to form a weld gap 10 for receiving the weld bead 3. As can be seen, due to the interlocking effect between the beads 8, rims 4a, and projections 6, two sections 2, 2' may quickly be pushed together into proper alignrnent with each other, whereby the weld seam or gap 10 is automatically defined in prepara-tion for a welding.
The inner clearance between two rims 4a on the one hand and the spacing between two ridges 6' of the projections are so related to each other to provide a form fit between two connected sections 2, 2' sufficient to hold the sections together at least during welding. The projections 6 may be provided with slanted ramps 6" for facilitatinghe pr~jections 5 to be pushed into the clearance be~ween two rims 4a. Incident-ally, the horizontal length of the projections 6 and of the rims 4a determine the size of the gap or seam 10 and hence the size of the welding bead.
1 Although the invention has been described with reference to specific example embodiments, it is to be understood, that it is intended to cover all modifications and equiva-lents within the scope of the appended claims.
Claims (9)
1. A structural panel made of at least two hollow chambered sections interconnected by welding, each of said hollow chambered sections comprising an upper and a lower cover sheet defining a first pair of sides, and partition wall means arranged between and supporting said cover sheets, said partition wall means defining a second pair of sides, each section further comprising longitudinal projec-tion means extending along one side of one pair of sides, and longitudinal bead means extending along the other side of said one pair of sides, whereby said bead means protrude inwardly from the respective section, said bead means being so located as to form rims as extensions of the respec-tive side, so that when two of said sections are pushed to-gether said projection means interlock with said bead means in such a manner that said sections are held in coplanar alignment with each other and so as to form a welding gap to receive a weld bead between said sections.
2. The structural panel of claim 1, wherein said sections comprise outer edges which are beveled, to form slanting walls for said welding gap.
3. The structural panel of claim 1 or 2, further com-prising troughs in said projection means and at least par-tially under said respective rim, for containing said weld bead as it is formed as a puddle during a welding process.
4. The structural panel of claim 1 or 2, wherein said sections are closed on one side and open on the respective opposite side, whereby a closed hollow chamber is formed between two interconnected sections.
5. The structural panel of claim 1 or 2, wherein said sections are extruded aluminum sections.
6. The structural panel of claim 1, wherein said first pair of sides comprises two wide sides, and wherein said second pair of sides comprises two narrow sides, said projection means and said bead means being located along said narrow sides, whereby said rims extend substantially flush with outer surfaces of said wide sides.
7. The structural panel of claim 1, wherein said first pair of sides comprises two wide sides, and wherein said second pair of sides comprises two narrow sides, said projection means and said bead means being located along said wide sides, whereby said rims extend substantially flush with said narrow sides.
8. The structural panel of claim 1, wherein a clear-ance between two rims and the spacing between two projec-tion means are so selected that at least a form fit is pro-vided between said projection means and the respective rims.
9. The structural panel of claim 1, wherein said rim and said projection means have a given length in a direction toward the respective other section for determining the size of said welding gap.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19848402847U DE8402847U1 (en) | 1984-02-01 | 1984-02-01 | PANEL ELEMENT FROM CAVE CHAMBER PROFILES |
| DEG8,402,847 | 1984-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1223423A true CA1223423A (en) | 1987-06-30 |
Family
ID=6763029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000472911A Expired CA1223423A (en) | 1984-02-01 | 1985-01-25 | Structural panel made of hollow chambered sections |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0153463B1 (en) |
| CA (1) | CA1223423A (en) |
| DE (2) | DE8402847U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11541440B2 (en) | 2019-07-25 | 2023-01-03 | National Research Council Of Canada | Snap-fit extrusions for forming panels |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228277B (en) * | 1989-01-31 | 1993-03-10 | Harris B J | Decking members |
| DE4311497C2 (en) * | 1993-04-07 | 2000-07-13 | Alstom Lhb Gmbh | Flat, double-walled composite profile made from extruded profiles |
| DE29500078U1 (en) * | 1995-01-04 | 1995-02-23 | Bekhiet Fauzi | Universal plastic plate |
| EP1104379B1 (en) * | 1998-08-14 | 2003-04-16 | Alcan Technology & Management AG | Pairing of two profiled sections with interspaced flange walls |
| FI20021779A (en) * | 2002-10-07 | 2004-04-08 | Mizar Ab Oy | Preparation process for units of cellular sandwich construction |
| DE102007007049B3 (en) * | 2007-02-08 | 2008-09-18 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Sheet metal component for use as body part in e.g. automobile, has cover plate connected with base plate, where connection element is used to increase deformation resistance of component depending on deformation of cover plate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2080351A6 (en) * | 1969-11-28 | 1971-11-12 | Wieland Werke Ag | |
| DE2510211C3 (en) * | 1975-03-08 | 1979-03-15 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Wall component made from partial profiles |
| DE2552622C3 (en) * | 1975-11-24 | 1982-02-04 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Plate-shaped hollow component |
| DE2636746C3 (en) * | 1976-08-14 | 1979-07-26 | Maleski-Mayska Geb. Baecker, Hannegret, 4050 Moenchengladbach | Device for compensating structural damage |
| DE2636858A1 (en) * | 1976-08-16 | 1978-02-23 | Fliess Kunststoff | PANEL-SHAPED WALL ELEMENT MADE OF EXTRUDED PLASTIC |
| IL61314A (en) * | 1980-10-20 | 1984-06-29 | Dan Pal Tech Plastic Ind | Light-transmitting wall panels |
| FR2520483A1 (en) * | 1982-01-28 | 1983-07-29 | Mac Gregor International Sa | PROFILE HAVING A QUICK ASSEMBLY SYSTEM ESPECIALLY USED AS A WALL CONSTRUCTION ELEMENT, SUCH AS THE UPPER TRAY OF A HATCH CLOSURE PANEL, A FLOOR; WALLS OR SLABS BUILT WITH THIS PROFILE |
-
1984
- 1984-02-01 DE DE19848402847U patent/DE8402847U1/en not_active Expired
- 1984-12-08 EP EP84115004A patent/EP0153463B1/en not_active Expired - Lifetime
- 1984-12-08 DE DE8484115004T patent/DE3481014D1/en not_active Expired - Lifetime
-
1985
- 1985-01-25 CA CA000472911A patent/CA1223423A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11541440B2 (en) | 2019-07-25 | 2023-01-03 | National Research Council Of Canada | Snap-fit extrusions for forming panels |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3481014D1 (en) | 1990-02-15 |
| DE8402847U1 (en) | 1984-04-26 |
| EP0153463A3 (en) | 1988-05-11 |
| EP0153463A2 (en) | 1985-09-04 |
| EP0153463B1 (en) | 1990-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |