EP1676967B1 - Connecting piece for construction parts - Google Patents

Connecting piece for construction parts Download PDF

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Publication number
EP1676967B1
EP1676967B1 EP05077615A EP05077615A EP1676967B1 EP 1676967 B1 EP1676967 B1 EP 1676967B1 EP 05077615 A EP05077615 A EP 05077615A EP 05077615 A EP05077615 A EP 05077615A EP 1676967 B1 EP1676967 B1 EP 1676967B1
Authority
EP
European Patent Office
Prior art keywords
coupling part
connecting piece
construction
female coupling
cavity
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.)
Not-in-force
Application number
EP05077615A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1676967A1 (en
Inventor
Marc Hendriks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PROLYTE BEHEER BV
Original Assignee
PROLYTE BEHEER BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PROLYTE BEHEER BV filed Critical PROLYTE BEHEER BV
Publication of EP1676967A1 publication Critical patent/EP1676967A1/en
Application granted granted Critical
Publication of EP1676967B1 publication Critical patent/EP1676967B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
    • E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
    • E04B1/585—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form with separate connection devices

Definitions

  • the present invention relates to a construction assembly comprising a connecting piece, mutually connecting construction elements, wherein the connecting piece comprises at least one male coupling part which is received fittingly in a corresponding female coupling part on a construction element, wherein said male coupling part is provided in a transverse direction with a continuous cavity which, at least substantially, registers with a cavity in a wall of said female coupling part while accommodating a mutually shared locking pin.
  • the invention furthermore relates to a connection piece for application in such a construction assembly.
  • Such a construction assembly finds particular application in scaffolding, theatre and stage construction for temporary or permanent constructions, wherein construction parts have to be coupled to each other relatively easily and quickly but nonetheless reliably and substantially by hand.
  • An example of such a construction assembly is described in Netherlands patent application no. NL 9300170 .
  • the rapid coupling described therein comprises a solid aluminium connecting piece which tapers conically on either side around a male coupling part on both sides.
  • the conical outer ends are received in female coupling parts which are formed on the construction parts for connecting and which take the form of bushes having a corresponding conical form internally.
  • the bushes are also manufactured from solid aluminium.
  • the connecting piece comprises in both male coupling parts a morse taper cavity which is in register with corresponding cavities in the walls of the bushes.
  • stage builder to herein rent at least some of the required parts, for instance for the duration of an event being performed on the stage. Parts are then not infrequently hired from different hire companies. This has the drawback for these companies that it is not possible, or hardly so, to verify whether their own parts are being returned or that parts are being returned which actually belong to a different hire company and which are for instance more worn.
  • the present invention has for its object, among others, to provide a construction assembly of the type stated in the preamble which enables a better recognition of the connecting piece and results in production costs that are hardly any higher.
  • a construction assembly of the type stated in the opening paragraph, according to the invention is characterized in that the male coupling part comprises a metal core with the cavity therein, and that the metal core is at least partly enclosed by a plastic outer housing which is received fittingly in said female coupling part.
  • the invention is herein based on the insight that the connecting piece is usually the loosest part in the whole construction and that, by making it recognizable, the parts coupled thereto will share this recognition.
  • a logo or other identification mark can be arranged therein relatively easily and with hardly any additional cost.
  • a preferred embodiment of the construction assembly according to the invention has in this respect the feature that the outer housing is coloured all through.
  • plastic for the outer housing furthermore results in a cost price reduction relative to solid aluminium, while the metal core of the total connecting piece ensures the strength and reliability which is required thereof in practice.
  • plastic is generally more adaptive to the specific dimensioning of the female coupling part, so that mutual play can be reduced further by a slight over-dimensioning.
  • a particular embodiment of the construction assembly according to the invention has the feature that at least two male coupling parts extend from the connecting piece which comprise a joint metal core.
  • a construction element can be coupled to the connecting piece on either side, this being a frequently occurring wish in practice.
  • the invention thus provides an essential part of a construction which can be constructed in fully modular manner.
  • a preferred embodiment of the construction assembly according to the invention has the feature that on an outer surface the male coupling part narrows toward a free end over at least a part of the length hereof, in particular runs in conical, and more particularly in morse taper manner, and that the female coupling part is provided internally with a correspondingly running surface.
  • Such a narrowing, or even conical, progression over at least a part of the length in the male and female coupling part makes the mutual coupling so-called self-locating or self-aligning, which significantly improves convenience of use of the coupling in practice.
  • a further preferred embodiment of the construction assembly according to the invention herein has the feature that the cavities in the male and female coupling part, just as the locking pin, run in a narrowing, in particular conical manner.
  • a comparable self-alignment is here achieved which moreover holds together and locks the entire coupling in a manner which is free of play.
  • a connection can thus be realized in fully manual and rapid manner, which can be taken apart again quickly and easily if desired, but whose strength and reliability are nevertheless in no way inferior to a permanent connection or an integrated construction.
  • a further preferred embodiment has the feature that the locking pin comprises a continuous cavity in at least practically transverse direction on a free end thereof for the purpose of receiving a locking pin therein.
  • a variety of plastics are per se suitable for the outer housing of the connecting piece.
  • a suitable plastic and the dimensioning thereof can be chosen depending on the forces to which the construction for erecting will be subjected during use.
  • a further embodiment of the connecting piece preferably has the feature that the outer housing comprises an at least practically splinter-free plastic, in particular one from a group of polyethylene, polypropylene, ABS and polyamide (nylon). With a view to possible relatively rough use of the connecting piece, use is made here of a splinter-free, in particular impact-resistant plastic for the outer housing, so that it does not become damaged or even unusable too quickly.
  • the construction assembly can per se be assembled in various ways.
  • a relatively simple and inexpensive, yet equally effective embodiment of the construction assembly does however have the feature in this respect that male coupling part has an outer housing cast round the core.
  • the outer housing is herein arranged by pouring the plastic in liquid, at least soft form into a mould adapted for this purpose round the metal core. Not only does this give a smooth connection to the metal core, which provides a particularly good protection against outside (weather) influences, the outer housing can thus also be arranged integrally around the metal core without further fixing means.
  • a further particular embodiment of the construction assembly has the feature that the outer housing comprises a number of ribs on the male coupling part which form a surface corresponding in form with an internal surface of the female coupling part.
  • the plastic is here not applied round the core as a solid whole, but use is made of a more open structure which is not however inferior in strength and usability. In a casting process such an open structure can be realized relatively easily and without additional processing steps by adapting hereto an internal form of a mould applied herein.
  • the invention also relates to a connecting piece for application in a construction assembly as described above, wherein the connecting piece comprises at least one male coupling part suitable to be received fittingly in a corresponding female coupling part on a construction element for connecting, wherein the male coupling part is provided in a transverse direction with a continuous cavity which is suitable, in coupled position, to be at least substantially in register with a cavity in a wall of the female coupling part for the purpose of receiving a mutually shared locking pin, wherein the male coupling part comprises a metal core with the cavity therein, and that the metal core is at least partly enclosed by a plastic outer housing which is suitable to be received fittingly in the female coupling part, wherein on an outer surface the male coupling part narrows toward a free end over at least a part of the length thereof, in particular runs conical, and more particularly in morse tape manner.
  • FIG. 1 An embodiment of a connecting piece 10 according to the invention is shown in figure 1 .
  • the connecting piece is intended to rigidly connect two construction elements to each other, and comprises for this purpose a male coupling part 11 on either side which is received fittingly in a complementary female coupling part 21,31 on construction elements 20,30, see also figure 3 .
  • the construction elements 20,30 both comprise so-called triangle trusses which are coupled to each other by means of three such connecting pieces.
  • the male coupling parts 11 narrow toward a free outer end and more particularly comprise a conical outer end 12, a straight part 13 running substantially parallel to a central axis and a morse taper connecting surface 14. In the coupled state this connecting surface lies fittingly against a correspondingly conical internal surface 24,35 of the female coupling parts 21,31, which extend from construction elements 20,30 as conical bushes.
  • the connecting piece comprises a housing 15 of plastic, in this example impact-resistant and splinter-free ABS which is coloured red all the way through and which is moulded seamlessly round a metal core 16 of aluminium, see figure 2 .
  • Plastic housing 15 here provides the fitting in conical bushes 21,31, while the metal core ensures the strength of the connecting piece.
  • morse taper cavities 17 are arranged therein substantially transversely of a central axis. These cavities 17 extend at least substantially in the metal core of the connecting piece and serve to receive correspondingly conically-formed locking pins 40 therein.
  • a rigid and permanently strong whole can be obtained by bringing together the construction elements 20,30 and enclosing connecting piece 10 and driving locking pins 40 into cavities 17.
  • the narrowed design of both the coupling parts 11 and locking pins 40 makes the coupling self locating or self-aligning in all its parts, which automatically brings about an exact relative positioning of the separate parts. Owing to the conical progression of locking pins 40 and the similar progression of cavities 17, driving in of the locking pins 17 will result in the coupling being held together so that a rigid entity free of play is eventually created, which can nevertheless just as easily be taken apart again.
  • these comprise a bore 41 on their outer end transversely of a central axis thereof for the purpose of receiving a fitting locking pin 50 therein.
  • the connecting piece 10 is manufactured by pouring a plastic in liquid, at least soft form round core 16 so as to thus form the housing 15 therearound. Extensions 18 on both ends of the metal core herein ensure a reliable anchoring of core 16 in plastic housing 15.
  • a mould which provides the shown open structure of the housing which comprises a number of ribs on a surface which together form a surface 14 corresponding in form with the internal surface of the female coupling part.
  • Such an open structure saves plastic without losing functionality.
  • the invention has been further elucidated above on the basis of only a single exemplary embodiment, it will be apparent that the invention is by no means limited thereto. On the contrary, many other embodiments and variations are still possible within the scope of the invention.
  • the invention can thus also be used for a single-sided connecting piece, which is then fixedly connected to one of the two construction parts for connecting, or for a multilateral connecting piece wherein the male coupling parts enclose a mutual angle of less than 180 degrees.
  • the connecting piece can also take a hybrid form in the sense that it comprises both a male and female coupling part.
  • the given exemplary embodiment is based on mutual connection of trusses, although the invention has many other fields of application, such as for instance in scaffolding for mutually coupling scaffolding pipes and platforms and other applications wherein it is desired to be able to build a construction relatively rapidly and to then be able to dismantle it again later just as easily.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Glass Compositions (AREA)
  • Connection Of Plates (AREA)
EP05077615A 2004-12-29 2005-11-17 Connecting piece for construction parts Not-in-force EP1676967B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1027917A NL1027917C2 (nl) 2004-12-29 2004-12-29 Verbindingsstuk voor constructiedelen.

Publications (2)

Publication Number Publication Date
EP1676967A1 EP1676967A1 (en) 2006-07-05
EP1676967B1 true EP1676967B1 (en) 2008-02-20

Family

ID=34974834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077615A Not-in-force EP1676967B1 (en) 2004-12-29 2005-11-17 Connecting piece for construction parts

Country Status (4)

Country Link
EP (1) EP1676967B1 (nl)
AT (1) ATE386851T1 (nl)
DE (1) DE602005004880T2 (nl)
NL (1) NL1027917C2 (nl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014213567A1 (de) * 2014-07-11 2016-01-14 Stahlwerk Annahütte Max Aicher GmbH & Co. KG Kopplungs-Vorrichtung zum Verbinden hintereinander angeordneter Stangen, Kopplungs-Anordnung mit einer derartigen Kopplungs-Vorrichtung und Verfahren zum Verbinden von zwei Stangen
NL2013311B1 (nl) 2014-08-07 2016-07-25 Prolyte Group B V Vrouwelijk koppeldeel en koppeling, truss voorzien daarvan, en bijbehorende werkwijze en gebruik.
WO2017095218A1 (en) 2015-12-04 2017-06-08 Prolyte Group B.V. Coupling for connecting construction parts, a truss provided therewith and associated method and use

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353852A (en) * 1965-07-15 1967-11-21 Concrete Steel Corp Mount for tractor canopy post
SE343928B (nl) * 1970-11-10 1972-03-20 A Offenbroich
GB9000191D0 (en) * 1990-01-04 1990-03-07 Legge Philip Scaffold couplers
DE4009539A1 (de) * 1990-03-24 1991-09-26 Langer Ruth Geb Layher Vorrichtung zum verbinden von fluchtend aneinander anschliessenden rohrenden
NL193287C (nl) 1993-01-27 1999-05-06 Roelof Steenbergen Snelkoppeling voor een trus-systeem.

Also Published As

Publication number Publication date
EP1676967A1 (en) 2006-07-05
DE602005004880D1 (de) 2008-04-03
NL1027917C2 (nl) 2006-06-30
DE602005004880T2 (de) 2009-02-12
ATE386851T1 (de) 2008-03-15

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