AN ARRANGEMENT FOR A DOOR CASE

Abstract: An arrangement for a door case (13) which is designed for use preferably with a fire door, and which consists of a plurality of door case profile sections (1, 2) which can be connected to each other and which preferably have an open profile shape. The invention makes possible, amongst other things, the rational fabrication of the door case, which consists of few parts which can be connected to each other effectively. In the vicinity of a corner (14) the door case profile sections (1, 2) have a channel-shaped receiving part (11) which is designed to receive one end part (17) of an L-shaped connecting reinforcement (12) which bridges round the corner of the door case in question, and they also have a plurality of connecting elements (3, 4, 5, 15) which can co-act with each other.

Description: An Arrangement for a Door Case The present invention relates to an arrangement for a doorframe which is intended preferably for use with a fire door, and which consists of a plurality of door case profile sections which can be connected to each other and which preferably have an open profile shape. The main object of the present invention is primaril to provide an arrangement of the above-mentioned type which makes rational fabrication of the door casepossible, preferably on the site where the door case is to be fixed in an opening in a wall or the like. A further object is to provide a door case which consists of few parts, which is simple to assemble, and in which it is possible to connect and lock the sections to each other effectively The said object is achieved by an arrangement accord- ing to the present invention which is essentially characte ised in that the said door case profile sections have a receivin part in the vicinity of the corners, shaped as a channel and designed to receive one end section of an L-shaped connecting reinforcement which bridges round the corner of the door case concerned,, and they.also have a plurality of connecting elements which can co-act with each other. The invention is described in the following by way of an embodiment example, with reference to the accompanying drawings, on which: -Figure 1 shows a door case constructed according to the present invention, viewed in perspective, at an angle from the front, Figure 2 shows a corner section of the door case, viewed in the direction from the outer face of the corner, one part of the door case and a connecting reinforcement being shown partly sectioned, Figure 3 shows the lower part of a door case profile section, together with a door case floor fixing adapted to th Figure shows part of a sill which is connected to a door case floor fixing and the lower part of a door case section, Figure 5 shows part of a corner of the door case with a connecting reinforcement inserted in it, Figure 6 shows the corner part of a flat piece of sheet metal whcch is designed to be bent to form an upper horizontal door case section of the door case, Figure 7 shows the corner part of the door case in its connected state, but with the connecting reinforcement omitted, Figure 8 shows the upper corner part of a flat piece of sheet metal which is designed to be bent to form the vertical door case section of the door case, Figure 9 shows a flat piece of sheet metal material which is designed to be bent " to form a connecting rein¬ forcement, Figure 10 is a cross-section view of one end of a door case section, and shows clearly how the connecting rein- forcement is connected thereto, Figure 11 shows the lower end of the sheet metal blank in the flat state, which is designed to be bent to form a vertical door case section, Figure 12 shows in perspective a frame side edge sec- tion, viewed from one side and one end thereof, Figure 13 shows in perspective a frame side edge sec¬ tion, viewed from its other side and end, Figure shows in perspective a connecting reinforce- ent viewed looking onto the two sides thereof, Figure 5 shows in perspective a sill, viewed from its two respective sides, and Figure 16 shows in perspective a door case floor fixin A door case profile section 1 or 2 according to the present invention is exceptionally suitable for manufacture from a flat piece of metal A or 2A respectively, made of steel, for example, by producing the desired shaping on the res ective ends of the arts b stam in for exaπ ]e At the same time, the connectin elements 3, ^ are stampe or shaped in some other way, in the form of, for example, tongues 3 and preferably slot-shaped cut-outs adapted to the tongues, at the said ends of the parts 1A and 2A res- pectively. Tongue-shaped connecting elements 5 are also stamped out along the said edge part of the respective parts 1A and 2A. After the stamping operation, the blanks 1A and 2A respectively are bent along bending lines 6 - 10 extending along their long sides in the longitudinal direction of the parts. Expediently, the profile sections 1 and 2.will be shaped identically on their two respective longitudinal edges, and Figures 3 and 10 show clearly the cross-section shape of the profiles on one of their long side edges. Channel shaped receiving sections 11, which preferabl have planar walls 11A facing towards the inside of the channel, are therefore formed along the two respective lon side edges of the respective door case profile sections, located, at a mutual distance from each other and extending in the longitudinal direction along the respective door case sections 1 and 2. A connecting reinforcement 12 which is designed to effect the connection of the door case profile sections 1 and 2 respectively in the vicinity of the two upper corner of the proposed door case 3, by the ends of a vertical and a horizontal door case profile section 1 or 2 respec¬ tively, is made in an -shape. Preferably, the said con¬ necting reinforcement is produced from a metal sheet 12A which is cut out by stamping, for example, so that it is given the flat shape shown in Figure 9- At the same time, the openings 5 are stamped out of the plate 12A, these openings 15 being designed to form receiving slots for the said tongue-shaped connecting elements 5 which are dis¬ posed along the respective edges of the long sides of the door case profile sections 1 and 2 respectively. After this, the plate 12A is bent and/or folded- along bending lines 18 - 21 extending from the angular corner υart 6 of the plate in the longitudinal direction of the two angled legs 17 on the"reinforcement 12, so that the con- necting reinforcement 12 is endowed with an at least approximately 5 -shaped cross-section shaping. The con- necting reinforcement 12 thus has two corner edges 22 and 2 respectively which face away from each other and the function of which will be explained later. Connecting up the door case profile sections 1, 2 so that they form a door case 13 is accomplished by inserting into each of the said channel-shaped receiving parts 11 on, for example, a vertical door case profile section one of the angular legs 1 of a connecting reinforcement 12 so that the said corner edges 22 or 23 on the said connecting reinforcement are pressed together somewhat and, due to the spring characteristics of the material, strive to move apart from each other in the connected state, and to rest - against the inwards facing walls 11A of the receiving part. After this, the said door case profile section 1 and the connecting reinforcement 12 are connected to each other by bending the tongue 5 on the relevant door case profile section 1 into the appropriate corresponding receiving hole 1 in the connecting reinforcement 12. Next, the remaining free leg of the respective connecting reinforcements 12 which are held securely in the said position in the vicinit of a corner 14 of the door case 3 in question, is inserted in a corresponding channel-shaped receiving space 11 on the horizontal door case profile section 2 in the above- described manner. It is now ensured at the same time that the connecting elements 3, 4 which are disposed at the res- pective short ends of the door case profile section are connected to each other by inserting the tongues 3 in the slots 4, for example, and thereafter bending them so that the two door case profile sections 1, 2 are connected to each other. Further locking is accomplished by bending the tongues on the horizontal section 2 so that they are intro¬ duced into the openings 15 on the respective connecting reinforcement 12. A further vertical door case profile section 1 is connected to the remaining free end of the horizontal door case profile section 2 in the above- mentioned way with the aid of a plurality of further con- necting reinforcements 12. The door case 13 connected together in this way to form a U-shape is connected to the door case floor fixing 24 in the vicinity of the downwards facing free ends of the respective vertical door case profile sections 1, in that each of the hollow cross-section parts of the section is designed to receive an upright-type fixing element 26 which can be engaged round, projecting upwards from a floor plate 25, being connected to the plate 25 by welding for example. Each of the channel-shaped receiving parts A 11 on the lower ends of the two said door case profile sections are designed to engage round an end part 2 on the said respective door case floor fixing 24. The con¬ nection and locking of a door case floor fixing 24 to a door case profile section 1 is accomplished by means of tongue-shaped connecting elements which can be bent and which are designed to be inserted, after bending round, in openings 28, in the direction of the arrow 29 which is shown on the drawing in Figure 3- After this, the door case 3 with its associated floo fixings 24 is set into the opening 30 in a wall, for exampl where it is desired to fix it, preferably to support a fire door. The fixing of the door case 13 is expediently accomplished in a similar way to that described in SE Patent Application 8104185-7, the joint between the wall opening 30 and the door case 13 being covered by means of suitable covering strips. The door case 13 is fixed to the floor with the aid of screivs which are inserted through openings Y in the plates 25 on the two door case floor fixing 24. Via projecting tongue-shaped parts 33 on its respec¬ tive ends, a sill 32, which is preferably produced by bending a stamped plate into the shape shown in Figure 4, is designed to be inserired in the corner parts of the door case, and to rest against the floor plate 2 so that the side edge surface 34 of the profile section which faces in towards the door opening 30 rests against and co acts with the end edge part of the sill 32. The fixing of the sill 32 to the floor is accomplished with the aid of screws 35 which are inserted through holes 36 in the door sill 3 . The said door case 13 is dismantled by reversing the operations described above. The invention is not limited to the embodiment which is described above and shown on the drawings merely by way of examplej but its details may be modified within th framework of the folio-sing Patent Claims.

Claims: P a t e n t C l a i m s 1. An arrangement for a door case (13) which is des¬ igned for use preferably with a fire door and which con¬ sists of a plurality of door case profile sections (1, 2) which can be connected to each other and which preferably 5 have an open profile shape, characterised in that the sai door case profile sections (1, 2) have a receiving part (11, 1 * 1 ) in the vicinity of the corners (14), shaped as a channel and designed to receive one end section of an L-shaped connecting reinforcement (12) which bridges 0 round the corner of the door case in question, and they also have a plurality of connecting elements (3, 4, 5, ^5 which can co-act with each other. -2. An arrangement according to Patent Claim 1, characterised in that the said receiving parts (11, 11 ) 5 are formed by bending round the side edge sections on the profile sections (1A, 2A). 3. An arrangement according to either of Patent Claims 1 - 2, characterised in that, when connected to a door case profile section (1, 2), the connecting reinforcement ( o extends along and rests against the inwards facing, pre¬ ferably planar walls (11A) of the receiving part. 4. An arrangement according to Patent Claim 3, characterised in that the connecting reinforcement (12), which is preferably produced by folding and/or bending a plate (12A), has two corner edges (22, 23) which face away from each other. 5. An arrangement according to Patent Claim 4, characterised in that, viewed across a cross-section, the connecting reinforcement (12) has an at least approximatel 5 -shaped cross-section profile (Figure 10). 6. An arrangement according to any of Patent Claims 1 - 5, characterised in that the said door case profile sections (1, 2) have two channel-shaped receiving parts OR! (11, 11 ) which, viewed transversely to the longitudinal direction of the door, case profile sections, extend at a mutual distance from each other in the longitudinal dir¬ ection of the respective door case profile sections (1, 2 5 7- An arrangement according to any of the preceding Patent Claims, characterised in that the short ends of a plurality of the said door case profile sections (1, 2) have tongue elements and/or slot elements (3, 4) which can co-act with each other, and which are designed to 0 connect the door case profile sections to each other. 8. An arrangement according to any of the preceding Patent Claims, characterised in that the door case profil sections (1, 2) have a plurality of tongue-shaped con¬ necting elements (5) which are designed to be inserted 5 in openings (15) in the respective connecting reinforce¬ ments (12) and . o connect the elements (1, 2, 12) to each other and thereby prevent them from shifting in their longitudinal direction. 9- * An arrangement according to any of the preceding o Patent Claims, characterised in that at their respective lower ends the two door case profile sections (1) which form the vertical door case upright elements have a hollow cross-section part which can engage round a door case floor fixing (24), the said respective channel-shape 5 receiving part (11 ) being designed to engage round an en part (27)on the said door case floor fixing (24) and to be connected to the latter by a plurality of connecting elements (5, 28). 10. An arrangement according to Patent Claim 9, characterised in that the door case floor fixing (24) and the side edge surfaces(34) of the profile sections which faces in towards a door opening (30) are designed to co-act with an end edge part (33) on a sill (32) which can be laid against a floor foundation.

Inventors: INGULF BO, INGULF, BO
Applicants: HELLBERGS IND AB, HELLBERGS INDUSTRIER AB
Application year: 1983
Main classification: E06B1
IPC codes: E06B1, E06B3