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 the formwork panels of a lost concrete formwork, with two overlapping interlocking connecting parts to be fastened to opposite formwork panels.
• a connecting device is known from EP 0 258 205 B1, which consists of two connecting parts which are fastened to the formwork panels lying opposite one another.
• One of the connecting parts consists of a U-shaped sheet metal body, which has two latching recesses on its legs.
• the other connecting part has a V-shaped or U-shaped base body, the sheet metal legs of which are arranged transversely to those of the first connecting part and have holes which snap into the latching recesses of the first connecting part.
• the connecting parts of such a connecting device snap into one another when the two formwork plates are pressed together.
• the prerequisite is that the connecting parts are mounted in the correct position at the designated positions on the formwork panels, and that the formwork panels are very precisely aligned relative to one another.
• the present invention has for its object to provide a connecting device for formwork panels that can be assembled in a simple manner after the connecting parts have been previously attached to the respective formwork panels.
• the connecting device has two connecting parts which are fastened to the formwork panels. If the circuit boards are properly placed against one another, the connecting parts on both sides overlap and a holding element can be inserted into the overlapping area, which penetrates the overlapping connecting parts and prevents the connecting parts from being pulled apart. In such a connecting device, the connecting parts are completely or almost without resistance against placed one against the other. The locking is carried out by the holding element inserted transversely through it. In this way, it is possible to fit numerous connecting devices, which are located between two formwork panels, into one another and then insert the holding elements. As a result, the formwork panels can be assembled into concrete formwork without great effort. If necessary, it is also possible to pull the holding element out again if it turns out that individual connecting parts have not been installed correctly. Then the concrete formwork can be opened again.
• the connecting parts are arranged crossing one another, a first connecting part having a transverse recess into which the other connecting part engages.
• This other connecting part has an opening in its wall surface through which the holding element can be inserted, which then engages under the first connecting part.
• the holding element is preferably a rod which is inserted through several pairs of connecting parts.
• This rod can be secured against movement in the longitudinal direction by rubbing the individual connecting devices. If this is not sufficient, it can be bent over after inserting it.
• This bar can also serve as lost concrete reinforcement.
• the connecting parts are preferably made of sheet metal and they are designed as V-shaped or U-shaped brackets, each with two base plates on the appropriate formwork panel. Such connecting parts can be produced in a simple manner by stamping and bending.
• Fig. 1 is an exploded view of the connecting device
• Fig. 2 is a perspective view of the connecting device in the assembled state.
• the connecting device serves to connect the formwork panels 10, 11 (FIG. 2) of a lost concrete formwork.
• These formwork panels which consist for example of a wood material, are held at a mutual distance by a plurality of connecting devices 13 in order to fill the space between the formwork panels with concrete. After the concrete has set, a wall element is formed on which the formwork panels 10, 11 remain as lost formwork.
• the connecting device 13 has a first connecting part 14 and a second connecting part 15. Both connecting parts consist of sheet metal, preferably steel.
• the first connecting part 14 has an essentially V-shaped shape, the two leg surfaces 16, 17 merging into one another in a narrow apex surface 18. At the ends of the leg surfaces 16, 17 there are fastening plates 19, 20 bent outwards with holes 21 in order to screw the connecting part onto a formwork plate or to fasten it in some other way.
• the holes 21 are each arranged in an elevation of the mounting plate 19 or 20.
• a recess 22 in the form of a gap extends across the leg surfaces 16, 17 and the apex surface 18, the flanks 23 of which diverge towards the apex surface 18, so that the recess 22 forms a V-shaped gap when viewed from the side. This gap extends over more than a third of the height of the leg surfaces 16, 17.
• the second connecting part 15 is also made from a sheet metal strip.
• the two leg surfaces 26, 27 are bent along the apex line 28 and placed flat against one another.
• Fastening plates 29, 30 extend in opposite directions from their ends. There are holes 31 in the fastening plates 30 for screwing the connecting part 15 onto a formwork plate 11.
• a hole 32 passes through each of the leg surfaces 26, 27 and is designed here as an elongated hole.
• the connecting part 15 is arranged transversely to the connecting part 14 in such a way that its apex line 28 crosses the apex surface 18 of the first connecting part 14.
• the second connecting part 15 penetrates into the recess 22 of the first connecting part.
• the leg surfaces 26, 27 are placed against one another so that they have a certain amount of play with respect to the edges 23 of the recess 22.
• a separate holding element 33 in the form of a round rod is pushed through the hole 32.
• This holding element 33 lies against the underside of the apex surface 18 of the first connecting part 14 and thus locks the second connecting part 15 on the first connecting part 14.
• the holding part 33 also forms a reinforcing bar. As is apparent from Fig. 2, it extends through a plurality of connecting devices 13 which are arranged along a line.
• the holding part 33 can be secured against pulling out in that the holding element 33 is pre-bent at one point and thus cannot slip through the hole 32.
• Other possibilities are to design the holding part 33 in such a way that it has a non-circular cross section. After the holding part has been pushed in, it can be rotated in order to hold onto the first or second connecting part in a frictional manner.
• the second connecting part 15 also has holding means 34 in the form of cutouts in the side edges in order to (not shown) to include additional reinforcing bars, which then run parallel to the holding element 33.

Landscapes

• 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)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8030510

Family Applications (1)

Country Status (6)

Families Citing this family (2)

Citations (5)

Family Cites Families (4)

• 1996
  • 1996-10-12 DE DE29617776U patent/DE29617776U1/de not_active Expired - Lifetime
• 1997
  • 1997-09-05 CZ CZ991238A patent/CZ123899A3/cs unknown
  • 1997-09-05 EP EP97944831A patent/EP0931201B1/de not_active Expired - Lifetime
  • 1997-09-05 DE DE59701486T patent/DE59701486D1/de not_active Expired - Fee Related
  • 1997-09-05 AT AT97944831T patent/ATE191946T1/de not_active IP Right Cessation
  • 1997-09-05 SK SK348-99A patent/SK34899A3/sk unknown
  • 1997-09-05 WO PCT/EP1997/004819 patent/WO1998016700A1/de not_active Application Discontinuation

Patent Citations (5)

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