GB2180030A

GB2180030A - Rivetted structural connection

Info

Publication number: GB2180030A
Application number: GB8619073A
Authority: GB
Inventors: Hans Heggen
Original assignee: Raufoss Ammunisjonsfabrikker AS
Current assignee: Raufoss Ammunisjonsfabrikker AS
Priority date: 1985-08-06
Filing date: 1986-08-05
Publication date: 1987-03-18
Also published as: NO156817B; DK163321B; DK163321C; SE460651B; NO156817C; DK370786A; DK370786D0; SE8603289D0; NO853105L; SE8603289L; GB8619073D0; GB2180030B

Abstract

A construction element in the form of an extruded profile 1 has one or more ribs 2, 3 running in the profile direction on a side which is to be connected in abutment with another construction element 19. The rib or ribs 2, 3 are partially removed adjacent to the future points of connection (Figures 1, 2) so that the remaining rib sections 15, 16, 17, 18 form attachment elements, which may be passed through holes 20, 21, 22, 23 in element 19 and may be fastened therein in the manner of rivets. <IMAGE>

Description

SPECIFICATION A method for providing a connection between two construction elements, and construction element The invention concerns a method of providing a connection between two construction elements, one of which is in the shape of an extruded profile element having one or more ribs running in the longitudinal direction ofthe profile element on the profile side that is to face the other construction element, part of the rib(s) being removed so as to provide attachment elements that can be connected to the other construction element. The invention also concerns construction elements produced from extruded profiles.

The invention is particularly developed in connection with extruded aluminium profiles, however, it is not limited to such a special choice of materials. Construction elements in the shape of profile elements are used for example in the construction offramework, railing etc., and the separate construction elements are welded together, riveted together or suspended from each other using hook-like attachment elements. Welding will often be undesirable, for aesthetic and/orfinancial reasons. This invention is aimed at exploiting the distinctive features of extruded profiles in a special manner, in orderthatthey may connect with other extruded profiles or other construction elements, especially in a way that gives a proper and secure connection which will be invis iblefromthe "outside", i.e. the side normally facing a viewer.Especially in the case of extruded aluminium profiles,the invention will produce a very handsome and aesthetically pleasing look, and the attained connection will be of a quality fully equal to that of known connections.

Thus, according to the invention, a method is proposed for providing a connection between two construction elements, one of which is in the shape of an extruded profile element having one or more ribs running in the longitudinal direction ofthe profile element on the profile side that is to face the other construction element, part of the rib(s) being removed so as to provide attachment elements that can be connected to the other construction element, the method being characterized in that a significant part of said ribs are removed in the intended connection area, whereby discrete rivet-like attachment elements em erge,thatthe other construction element is provided with holes and that the rivet-like attachment elements are inserted into said holes and deformed on the back of the other construction element, in the manner of rivets.

In this manner the necessary attachment elements are provided as integral parts of the extruded profile, The attachment elements may be used as rivets, being inserted into holes made for the purpose in the other construction element and deformed on the back of said other construction element, in the manner of rivets.

Preferably, the profile in question is extruded with a shallow groove in the profile surface along the basic angles of the ribs. The object of the shallow grooves is to facilitate the stamping out or removal of the desired ribbed section in such a way as to avoid burrs or projecting sections or irregulationswhich might prevent the desired proper and close-fitting contact with the other construction element, said shallow grooves allowing the use of stamps which areworkableto some degree insidethe surface plane.

According to the invention, the profile in question may also be extruded with a longitudinal groove on the profile surface opposite the surface having the ribs, and near the rib, respectively in the area between two adjoining ribs. Such a longitudinal groove is used to advantage during the above-mentioned stamping out of rib sections, since a corresponding ridge or a similar provision on a holding stamp may mesh with the groove and provide the desired resistance and support against displacement ofthe extruded profile during the stamping.

According to the invention, the partial removal of the rib(s) may, as has been already mentioned, be performed during the stamping out, while other techniques may of course also be used to remove the rib section, if desirable.

The invention will be explained in more detail with reference to the drawings, where: Figure 1 shows a perspective segment of an extruded profile according to the invention, Figure2 shows the profile in Figure 1 with rib sectionsto be removed indicated by hatching, Figure 3 shows the profile in Figures 1 and 2 after removal of the ribbed sections, so that attachment elements are apparent, Figure4shows a construction element which can be connected tothe extruded profile in Figure3, Figure 5shows an end outline, partially cut through, ofthe elements in Figures 3 and 4 interconnected, Figure 6shows a construction element produced from an extruded profile, such as the one shown in Figure 1, Figure 7 shows a perspective segment of a modified extruded profile, Figure 8shows an end outline, partially th rough, of the profile in Figure 7, together a construction elementofthetypeshown in Figure4, Figure9shows a schematic section through a stamping deviceto beusedforstampingouttherib sections to be removed so as to provide the attachment elements, and Figures 10 and 11 show side outline and end out- line, respectively, of a construction element produced from an extruded profile according to the invention.

In Figure 1, a perspective segment of an extruded aluminium profile 1 is shown. As will be apparent from Figur 1, it concerns a bar profile where two longitudinal ribs 2 and 3 are provided along one ofthe flat surfaces. Along the basic angles of the ribs, shallow grooves 4,5,6 and 7 respectively have been designed. On the other plane side a longitudinal groove 8 has been designed. The profile shown in Figure 1 is extruded with the shape shown. In Figure 2 the profile 1 is shown with some hatched sections 9,10,11 and 12,13,14. This signifies rib sections to be removed, and after removal onlyfourgudgeons 15,16,17 and 18will be left on the ribs 2 and 3 in the area shown, see Figure 3.Said fourgudgeons 15-18 form attachment elements which in order to connect the extruded profile 1 with another element, in this case the channel member 19 shown in Figure 4, may be inserted into correspondingly punched holes 20,21,22 and 23 in the channel member 19, and be clenched as shown in Figure 5.

Figure 6 shows a construction element 24 produced by cutting an extruded aluminium profile. Before or after the cutting, rib sections have been removed to leave four attachment elements 25,26 and 27,28. The extruded profile 24 here has a channel shape in the cross section, unlike the flat rod shape shown in Figure 1 - 3, but otherwise the profile is designed with corresponding shallow grooves in the basic angles ofthe ribs, and with a groove between the ribs on the profile side opposite the one having the attachment elements or ribs. Such a construction element may be connected to another construction element having holes corresponding to the gudgeons 25-28, the gudgeons 25-28 being used as rivets, in the way shown in Figure 5.

Figure 7 shows a perspective segment of the rod profile like the one shown in Figure 1, but having two different rib designs, the upper rib 29 being designed likethe rib 2 in Figure 1,whilethe lowerrib30 is split 31. The intension behind said splitting will be apparent from Figure 8, wherein the rod profile shown in Figure7 is riveted to a construction element corresponding to the one shown in Figure 4. Instead of a clenching as in Figure 5, here a splitting/ clenching 32 is shown in the case of the upper rib 29, whereas the lower rib 30 is clenched by means ofthe split 31.

Figures 10 and 11 showan example of a more complicated construction element which may be designed from an extruded profile. It concerns a hooking element 37 which is cut from an extruded rod-shaped profile. As previously explained in connection with Figure 1-3, rivet gudgeons 38,39 have been provided. The hook element 37 is provided with a projecting lug 40 provided by a simple deflection of part of the plate member. Said hook element is intended for attachmentto another construction element by means ofthefourattachmentelements38, 39 as shown in Figure 5.

FigureS shows a section through a stamping device used in removing the ribs sections 9-14 shown in Figure 2. The device comprises a lower stamp 41 and an upperstamp42 and cutting stamps43 and 44controlled between stamps 41 and 42. The upper holding stamp 42 has been provided with a ridge 45 meshing with the longitudinal groove in the extruded profile 1.

The cutting stamps 43 and 44 have been provided with 46,57, which will rest in the shallow groove4 and the shallow groove 7, respectively, when the holding stamps 41,42 are closed against the profile 1.

When the cutting stamps 43,44 are guided towards each other as suggested by the arrows, the desired rib sections will be removed to a depth a little below the plane of the surface of the profile 1, said surface plane being designed as 48. This ensures complete removal ofthe rib sections, so thatthere will be no burrs or projecting sections to disturb the proper and desirable interactive contact between the two construction elements or be connected,for example as shown in Figure 5. The shallow grooves 5 and 6 are not strictly necessaryperseto achieve said effect.

Claims

1. A method of providing a connection between two construction elements, one of which is in the form of an extruded profile element having at least one rib running in the longitudinal direction ofthe profile element on the profile side that is to face the other construction element, part of the rib(s) being removed so as to provide attachment elements for connection to the other construction element, characterised in that a significant part of said rib(s) is (are) removed in the intended connection area, whereby discrete rivet-like attachment elements emerge, that the other construction element is provided with holes, and that the rivet-like attachment elements are inserted into said holes and deformed on the back of the other construction element, in the manner of rivets.

2. A method according to claim 1, characterised in that the partial removal of the rib or ribs is per- formed by stamping.

3. A method of providing a connection between two construction elements, the method being sub stantialiy as herein described with reference to Figures 1 to 5 or Figures 1 to 5 as modified by Figure 6, Figures 7 and 8, Figure9 or Figures 10 and 11.

4. A construction element-produced from an extruded profile which is extruded with at least one rib running in the longitudinal direction ofthe profile on the profile side which is to face another construction element, connection with the latter being by means of attachment elements formed by partial removal of the ribs in the intended area of attachment, characterised in that a significant part of said rib(s) has (have) been removed, whereby the remaining rib sections form discrete, rivet-like attachment elements intended for insertion into holes in the other construction element to be deformed on the back of the latter in the manner of rivets.

5. A construction element according to claim 4, characterised in that a shallow groove is provided in said profile side along the base angles of rib/ribs.

6. A construction element according to claim 4 or 5, characterised in that at least two ribs are provided and in that a groove is provided on the profile side opposite said side, near the rib, respectively in the area between two adjoining ribs.

7. A construction element constructed and arranged substantially as herein described with reference to Figures 1,2,3 and 5, Figure 6, Figures 7 and 8, Figure 9 or Figures 10 and 11.

8. An extruded construction element having discrete rivet-like attachment elements for insertion into holesofanotherconstructino element, the said rivetlike attachment elements having been provided by removing significant parts of at least one longitudinal rib of the extruded construction elementto form said attachment elements.