EP0728879A1 - Dispositif de jonction pour joindre deux panneaux de coffrage distants de coffrage composite perdu - Google Patents

Dispositif de jonction pour joindre deux panneaux de coffrage distants de coffrage composite perdu Download PDF

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Publication number
EP0728879A1
EP0728879A1 EP95110125A EP95110125A EP0728879A1 EP 0728879 A1 EP0728879 A1 EP 0728879A1 EP 95110125 A EP95110125 A EP 95110125A EP 95110125 A EP95110125 A EP 95110125A EP 0728879 A1 EP0728879 A1 EP 0728879A1
Authority
EP
European Patent Office
Prior art keywords
coupling
spacer
connecting device
foot
feet
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.)
Withdrawn
Application number
EP95110125A
Other languages
German (de)
English (en)
Inventor
Kilian Dr.Ing. Krettenauer
Dominik Dreiner
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.)
Josef Konig Metallwarenfabrik GmbH
Original Assignee
Josef Konig Metallwarenfabrik GmbH
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 Josef Konig Metallwarenfabrik GmbH filed Critical Josef Konig Metallwarenfabrik GmbH
Publication of EP0728879A1 publication Critical patent/EP0728879A1/fr
Withdrawn legal-status Critical Current

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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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms

Definitions

  • the invention relates to a connecting device for connecting two spaced formwork panels of a lost composite formwork, consisting of two foot parts which can be fastened to the spaced formwork panels, each having a coupling section with latching contours, and a spacer for connecting the foot parts, the ends of which are distant from one another as well with latching contours Provided and each with a coupling section of a foot part by plugging together so as to be connectable coupling sections are formed such that in the coupling position the locking contours assigned to one end of the spacer engage positively behind the locking contours of a foot part.
  • a connecting device of the aforementioned type and purpose which consists of two foot parts that can be attached to spaced formwork panels of a lost composite formwork and a spacer for connecting these foot parts.
  • the foot parts are designed as coupling sleeves with notches arranged on spring sections and the spacer is a coupling bolt which is provided at both ends with pins which can be inserted into the coupling sleeves and in the coupling position the catches engaging behind the coupling sleeve.
  • the foot parts are designed as cylindrical wall sleeves protruding from a base plate, the cylinder wall of which is divided into spring tongues by slots extending from the free end into the wall sleeve, from which the catches which can be locked with the head parts of a spacer protrude into the interior of the wall sleeve.
  • centering sections protrude from the base plate within the wall sleeve, which at the end receive centering pins formed on the spacer formed as a coupling pin when coupling.
  • a connecting device of injection-molded plastic parts of the type and purpose specified at the outset has also become known, which is described in EP 0 537 727 B1.
  • the object on which the invention is based is to create a connecting device which is simple in construction and can be produced cost-effectively, for connecting two spaced formwork panels of a lost composite formwork.
  • the foot parts and the spacer are formed as shaped sheet metal parts that the spacer is two sheet metal strips connected by a back web, consisting of a one-piece blank, and that the latching contours of the coupling sections of the spacer and / or the foot parts, which are designed in the manner of plug-in couplings, consist of cupped bends which, in the coupling case, snap into a position that engages behind the locking contours of the other part.
  • connection device designed in this way can be constructed in a simple and inexpensive manner in that the individual parts of this connection device are formed as sheet metal molded parts and can therefore be produced quickly and in large numbers in a known manner as stamped parts.
  • a further development of the invention provides that the foot parts which can be fastened to the formwork panels of a composite formwork are mutually identical and each have at least two feet protruding from a base plate with perforations surrounded by reinforcing beads for receiving fastening screws and bridge-shaped sections between the feet, which according to the invention Fastening a foot part on a formwork panel form side openings for backfilling the foot part with concrete or similar bulk material.
  • the feet are formed on the footplate of the respective foot part via diverging folds and, furthermore, oblique surfaces also extend between each of the adjacent feet and merge into the bridge-shaped sections.
  • the feet which protrude from the base plate, their contact areas with the formwork panels are minimized when the base parts are used as intended.
  • the feet expediently have contact surfaces which point against the formwork panels.
  • a foot part designed in this way has extraordinary rigidity.
  • the inclined folds facilitate locating the holes for the fastening screws, since the latter slide into the associated holes when they are attached in the area of the fold of a pedestal.
  • the coupling sections of the foot parts are funnel-shaped coupling sleeves with a central catch opening for a coupling section of a spacer designed as a coupling plug, and the funnel-shaped coupling sleeves are narrowed in the direction of the projecting feet into the footplate of the foot section.
  • an edge delimiting the catch opening on the side pointing towards the feet expediently forms a locking contour which can be positively gripped behind by the locking contours of the coupling section of the spacer, behind which the locking contour of the coupling section in question snaps when the spacer is engaged. It has proven to be advantageous if the latching contours of the coupling sections of the foot parts and spacers in the coupling position have undercuts that interlock with one another.
  • the funnel-shaped coupling sleeve and its catch opening can have a circular cross section or can also advantageously be oval or provided with an elliptical cross section. It goes without saying that the coupling sections of the spacers designed as plug parts must be adapted to the design of the coupling sleeves and their catch openings.
  • a design of the coupling sleeve and the associated catch opening that rejects the circular shape conveys an automatically acting one with appropriate adaptation of the coupling sections of the spacers to be used Anti-rotation device.
  • the catch openings of the coupling sleeves can also be provided with means for preventing rotation of a spacer coupled with a coupling section, for example in the form of an integrally formed projection which projects into the catch opening and interacts with a rotary stop of a coupling section of the spacer coupled into the catch opening.
  • the projection forming the anti-rotation device can expediently consist of a retaining cam which is bent from the edge delimiting the catch opening on the side pointing towards the feet.
  • Another sensible development of the invention provides that the sheet metal strips of the spacer are bent to an open U-shaped profile in the area of the back web, extend further from the back web to the coupling sections at both ends, and are designed to be resilient.
  • a spacer designed in this way is simple to manufacture and advantageous insofar as the ends of the sheet metal strips forming the coupling sections are effective spring sections which, when the respective coupling section is coupled into a coupling sleeve, enable the locking contours to move smoothly and reliably against the locking contours of the coupling sleeves Ensure that it snaps into a position that engages behind the locking contours of the respective coupling sleeve.
  • the spacer is light and with little effort can be coupled with the foot parts. This is particularly the case if, according to a further development, the sheet metal strips which are connected to one another by the back web are designed to narrow towards their ends which form the coupling sections of the respective spacer.
  • the ends of the two metal strips of a spacer which are provided with latching contours, and which have an outer contour corresponding to the cross-sectional shape of the catch openings of the foot parts, are spaced apart from one another in such a way that a protrusion protruding against rotation into the catch opening when the spacer is engaged between the End portions of the sheet metal strips engages or forms an effective stop in the circumferential direction.
  • the arrangement can expediently be such that, when used as intended, a spacer coupled to a foot part fastened to a formwork plate is supported with the folding edges of the catches of the coupled coupling section on the formwork plate and thereby projects at a right angle from the latter.
  • At least one sheet metal strip of a spacer can have at least one end with a support tab projecting transversely to the longitudinal extension, which, when the spacer is coupled, is supported in a foot part on its footplate on the side facing away from the feet and ensures that after coupling the spacer protrudes from the formwork panel at right angles.
  • the composite formwork 10 illustrated in detail in FIG. 1 consists of two formwork panels 11 held at a distance from one another in a parallel position.
  • the formwork panels 11 are connected to one another and kept at a distance from one another by means of the connecting device 12 according to the invention, which are arranged in a predetermined number per unit area of the formwork panels 11 is.
  • These connecting devices 12 each consist of two foot parts 13, which are fastened in the manner shown in FIG. 1 by means of only indicated retaining screws 14 to the formwork panels 11 on their mutually facing sides, and each of a spacer 15 which is positively coupled into the foot parts 13.
  • the foot parts 13 and spacers 15 are designed as quick and easy to produce sheet metal parts.
  • the base parts 13 of a connecting device 10 are generally identical to one another, so that basically only two parts need to be provided for the construction of such connecting devices, namely the base parts 13 and the spacers 15.
  • spacers 15 of different lengths must be provided in order to have different wall thicknesses to be able to connect the formwork panels 11 of a composite formwork to one another at correspondingly different intervals.
  • the foot part 13 shown in FIGS. 2 and 3 is a stamped part with an approximately square foot plate 18 and four feet 20 formed in the corner regions via diverging folds 19, each of which is penetrated by a screw hole 21 for receiving a fastening screw are.
  • the feet 20 can either, as shown in FIG. 3, have flat or punctiform contact surfaces.
  • the screw holes 21 of the feet 20 are surrounded by reinforcing beads 22 and between adjacent feet extend bridge-like sections 23 which form side openings 24 for backfilling the foot part 13 with concrete or similar bulk material after fastening a foot part to a formwork panel. This is shown particularly clearly by the two foot parts 13, each of which is connected to a formwork plate 11, in FIG .
  • a circular cross-section and funnel-shaped catch opening 26 is formed as a coupling sleeve, which narrows in the direction of the projecting feet 20.
  • An edge 27 of the coupling opening 28 on the base side forms a locking contour that can be gripped behind by a coupling section of the spacer 15 designed as a coupling plug.
  • the spacer 15 illustrated in FIGS. 4 to 6 is a sheet metal molded part produced from a one-piece blank, which has two sheet metal strips 32 which are connected to one another via a back web 30 and each provided with a longitudinal reinforcing bead 31.
  • the distal ends of the sheet metal strips 32 are slightly tapered to the cross-sectional shape of the funnel-shaped catch openings 26, 28 of the foot parts 13 adapted connector plugs and provided with shell-shaped curved bends 34 which, in the coupling case, positively engage behind the latching contours 27 of the catch openings 26, 28 of the foot parts 13 designed as coupling sleeves.
  • both the web 30 connecting the two sheet metal strips 32 of the spacer 15 and the support tab 35 formed on a sheet metal strip in the vicinity of one end of the spacer 15 point downward, so that one with the relevant end in a foot part 13 coupled spacer 15 is supported on the support bracket 35 and protrudes horizontally and thus perpendicular to the surface extension of the formwork plate 11 with which the foot part in question is firmly connected.
  • the latching contours 27 of the foot parts 13 designed as coupling sleeves and the bends 34 forming the latching contours of the coupling plugs 33 can be coordinated with one another in such a way that in the coupled state, the end faces of the bends 34 on the respective shuttering plate 11 on the respective end form of the latching contours engaging with one another in a form-fitting manner the foot part 13 forming the coupling sleeve is fastened, whereby an alignment of the spacers 15 perpendicular to the surface extension of the formwork panels is also imparted.
  • the spacers 15 are on the molded-on support bracket 35 opposite side in the form of semicircular recesses 36 provided with supports for receiving reinforcing bars, the open sides of which point upwards in the installed position.
  • FIG. 7 illustrates an alternative embodiment of a foot part 13 'to the foot part according to FIGS. 2 and 3, in which the funnel-shaped catch opening 26' forming the coupling sleeve has an oval cross-section rather than a circular one. Accordingly, as seen in a plan view, the entire foot part 13 'is not square in shape, but is rectangular. 7 differs from the foot part 13 according to FIG. 2 in that in the region of the small radii of the oval coupling opening 28 'which are at a distance from one another, flattened sections 38 protrude into the latter, which sections have correspondingly adapted plug parts of the spacer provide an effective anti-rotation device for a coupled spacer. Otherwise, the foot part 13 'does not differ from the foot part 13 according to FIG. 2. Therefore, the same reference numerals are used for the same parts as in FIG. 2.
  • connection device 12 which is extremely simple in construction, can be assembled quickly and easily and is suitable for large load receptacles for connecting Formwork panels 11 of a lost composite formwork 10 have been created.
  • the base parts 13, 13 'positioned in the correct position are screwed to the formwork panels 11 provided for the composite formwork and then the formwork panels are connected to one another using the spacers 15.
  • the construction of the composite formwork can take place at the construction site or at an assembly location by coupling spacers 15 of the required length extension into the assembled base parts 13, 13 'of a formwork panel and then the second formwork panel also equipped with appropriately positioned base parts 13, 13' 11 are brought up to the other ends of the spacers 15 already coupled to the foot parts of the first-mentioned formwork panel, and are coupled to the latter by plugging the foot parts with their catch openings onto the ends of the spacers 15, which ends are designed as coupling plugs 33, the coupling plugs being able to couple in when engaged Slightly spring back the back bar 30 to both sides of the sheet metal strip 32 which has its own spring action and then snap with its locking contours into a locking position engaging behind the locking contours of the foot parts.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP95110125A 1995-02-24 1995-06-29 Dispositif de jonction pour joindre deux panneaux de coffrage distants de coffrage composite perdu Withdrawn EP0728879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29502890U 1995-02-24
DE29502890U DE29502890U1 (de) 1995-02-24 1995-02-24 Verbindungsteil zum Zusammenhalten von zwei Grundplatten einer verlorenen Schalung

Publications (1)

Publication Number Publication Date
EP0728879A1 true EP0728879A1 (fr) 1996-08-28

Family

ID=8004257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110125A Withdrawn EP0728879A1 (fr) 1995-02-24 1995-06-29 Dispositif de jonction pour joindre deux panneaux de coffrage distants de coffrage composite perdu

Country Status (2)

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EP (1) EP0728879A1 (fr)
DE (1) DE29502890U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2458317A (en) * 2008-03-14 2009-09-16 Herman Funke Improvements in or relating to wall ties

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398947A (en) * 1982-09-23 1983-08-16 Amax Inc. Coated magnesium granules having anti-caking properties
EP0258205A1 (fr) * 1986-07-03 1988-03-02 Eva Maria Dipl.-Ing. Gruber Elément de liaison pour les deux plaques d'un coffrage perdu
CH669235A5 (en) 1984-12-19 1989-02-28 Paul Wuhrmann Concrete wall erection method - uses shuttering halves with couplings engaged by pushing together and left on site
EP0537727A1 (fr) 1991-10-18 1993-04-21 Kunz GmbH & Co. Dispositif d'assemblage pour panneaux et/ou armatures en fer d'un coffrage composite
DE4134439A1 (de) * 1991-10-18 1993-04-22 Kunz Gmbh & Co Verbindungseinrichtung fuer zwei mit abstand zueinander angeordnete platten einer verbundschalung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398947A (en) * 1982-09-23 1983-08-16 Amax Inc. Coated magnesium granules having anti-caking properties
CH669235A5 (en) 1984-12-19 1989-02-28 Paul Wuhrmann Concrete wall erection method - uses shuttering halves with couplings engaged by pushing together and left on site
EP0258205A1 (fr) * 1986-07-03 1988-03-02 Eva Maria Dipl.-Ing. Gruber Elément de liaison pour les deux plaques d'un coffrage perdu
EP0537727A1 (fr) 1991-10-18 1993-04-21 Kunz GmbH & Co. Dispositif d'assemblage pour panneaux et/ou armatures en fer d'un coffrage composite
DE4134439A1 (de) * 1991-10-18 1993-04-22 Kunz Gmbh & Co Verbindungseinrichtung fuer zwei mit abstand zueinander angeordnete platten einer verbundschalung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2458317A (en) * 2008-03-14 2009-09-16 Herman Funke Improvements in or relating to wall ties
GB2458317B (en) * 2008-03-14 2011-01-12 Herman Funke Improvements in or relating to ties

Also Published As

Publication number Publication date
DE29502890U1 (de) 1996-06-27

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