Door arrangement

Abstract

A door arrangement has a door frame, a door leaf, door hinges and a magnetic closure device, wherein the door hinges are fastened on a hinge side of the door leaf and join the door leaf swivelably with the door frame. The door frame has a step for stopping the door leaf in the closed position, the step having a stop arm overlapping the door leaf in the closed position and a lateral arm. The closure device is formed from a magnet arrangement on the door frame as well as a magnetic material on a rim of the door leaf. The magnet arrangement is disposed on the lateral arm in such a way that a gap remains between the magnet arrangement and the magnetic material disposed on the rim of the door leaf.

Claims

1. A door arrangement comprising: a door frame; a door leaf made of glass; door hinges fastened on a hinge side of the door leaf and swivelably joining the door leaf with the door frame; and a magnetic closure device consisting of a magnet arrangement and a sheet of magnetic material, the magnet arrangement comprising at least one magnet, wherein the magnet arrangement has a fastening plate fastened to the door frame and a carrier plate configured to be positioned relative to the fastening plate and which carries the at least one magnet, the at least one magnet extending through at least one opening in the fastening plate, wherein the magnet arrangement has a positioning mechanism comprising spindles that are connected to the carrier plate and are accessible through the fastening plate to move the carrier plate relative to the fastening plate by adjusting the spindles, so that a gap between the at least one magnet of the magnet arrangement and the sheet of magnetic material when the door leaf is in a closed position is adjustable, wherein the sheet of magnetic material mounted directly to the glass on a rim of the door leaf, for retaining the door leaf in the closed position; wherein the door frame has a step for stopping the door leaf in the closed position, the step comprising a stop arm overlapping the door leaf in the closed position and a lateral arm, and wherein the magnet arrangement is disposed on the lateral arm such that the gap remains between the at least one magnet of the magnet arrangement and the sheet of magnetic material disposed on the rim of the door leaf when the door leaf is in the closed position.

2. The door arrangement according to claim 1, wherein the door leaf has a handle opening or a fixed handle.

3. The door arrangement according to claim 1, wherein only one said magnetic closure device is provided and which is disposed at a middle of a height of the door leaf.

4. The door arrangement according to claim 1, wherein the at least one magnet comprises a plurality of magnets disposed in a row.

5. The door arrangement according to claim 4, wherein the magnets are arranged so that each of the magnets has a pole alignment that is opposite an adjacent one of the magnets.

6. The door arrangement according to claim 4, wherein the magnets each have a cylindrical shape.

7. The door arrangement according to claim 1, wherein the at least one magnet has a cylindrical shape.

8. The door arrangement according to claim 1, wherein the fastening plate is made of a nonmagnetic material.

9. The door arrangement according to claim 1, wherein the carrier plate is made from a magnetic material.

10. The door arrangement according to claim 1, wherein a door seal is disposed on the stop arm.

11. The door arrangement according to claim 10, wherein the door seal is held in a seal groove machined in the stop arm.

12. The door arrangement according to claim 10, wherein the door seal at least partially conceals the magnet arrangement when the door leaf is open.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be explained below on the basis of drawings, which are merely exemplary, wherein:

(2) FIG. 1 shows a door arrangement with a closed door leaf and two magnetic closure devices on a side of the door leaf opposite the hinges,

(3) FIG. 2 shows the door arrangement according to FIG. 1 with merely one magnetic closure device at alternative positions,

(4) FIG. 3 shows a magnet arrangement of the magnetic closure device mounted on a door frame of the door arrangement,

(5) FIG. 4 shows the portion of the door arrangement illustrated in FIG. 3 in a partly cutaway view rotated by 90,

(6) FIG. 5a shows a horizontal section through the door arrangement in the opened condition, and

(7) FIG. 5b shows a horizontal section through the door arrangement with a closed door leaf.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(8) FIG. 1 shows a door arrangement with a door frame 1, a door leaf 2, two door hinges 3 and two magnetic closure devices 4. In the illustrated closed condition, the door leaf 2 is positioned in a plane defined by a first horizontal direction X and the vertical Z.

(9) Within the scope of the invention, the terms hinge side and side opposite the hinges refer to the rims of the door leaf 2, which are spaced apart from one another along the first horizontal direction X by the width of the door leaf 2. Accordingly, the door hinges 3 are located on the hinge side, while the two closure devices 4 are located on the side opposite the hinges. As will be explained in more detail below, the door leaf 2 is stopped in the closed position via a door seal (see below with reference to FIGS. 5a and 5b) against a step 6 of the door frame 1.

(10) As will be explained in more detail below, magnet arrangements 7 of the magnetic closure device 4 at the side of the door leaf 4 are inserted in lateral arm 8 extending on the door frame 1 outside of the door leaf 2. The magnet arrangements 7 respectively have a plurality of magnets 9, wherein a portion 10 of magnetic material is disposed at the height of the magnet arrangement 7 on the door leaf 2. The portion 10 may be constructed as sheet-metal strips or sheet-metal angle pieces and may extend approximately over the same height as the magnet arrangement 7.

(11) It is already evident in FIG. 1 that, for each magnetic closure device 4 between the magnet arrangement 7 and the portion of magnetic material 10, a clear gap remains along the first horizontal direction, and so the portion 10 of magnetic material is not stopped against the magnets 9. Accordingly, given the closing function according to the invention, both noise production and also a wear or an attrition are reliably avoided.

(12) By virtue of the magnetic closure device 4, no lock with a lock case and a lock latch is necessary for the illustrated door arrangement in the form of a building interior door.

(13) In opening direction, the door leaf 2 may be simply pushed or pulled open. For this purpose, a handle opening 11 in the door leaf 2 of glass is illustrated by way of example in FIG. 1, wherein alternatively a fixed handle in the form of a knob or bow may be disposed on at least one face or preferably on both faces of the door leaf 2. The portion 10 of magnetic material, which preferably is formed as sheet-metal strips or sheet-metal angle pieces, as well as a fixed handle may be adhesively bonded in particularly simple manner in a door leaf 2 of glass.

(14) FIG. 2 is intended to show that different configurations may be considered for the positioning of the closure device 4. In particular, the door arrangement may merely have one single magnetic closure device 4, which is disposed, for example, at height of the handle opening 11. Although an arrangement of the at least one magnetic closure device 4 on the side opposite the hinges is preferred, a different arrangement, for example in a lintel region above the door leaf 2, is also possible, wherein a corresponding arrangement is indicated as a dot-dash line in FIG. 2.

(15) Further details of the magnet arrangement 7 as a component of the magnetic closure device 4 are apparent from FIGS. 3 and 4. From a comparative examination of FIG. 3 as well as of FIG. 4, it is evident that the magnet arrangement has a fastening plate 12 fastened to the door frame 1, especially to the lateral arm 8, as well as a carrier plate 13, which can be positioned relative to the fastening plate 12 and which carries the magnets 9.

(16) In the illustrated exemplary embodiment, five circular cylindrical magnets 9 are disposed, by way of example, one above the other in a row along the vertical direction Z, in which case commercially available standard constructions may be used.

(17) The fastening plate 12 is fastened rigidly on the lateral arm 8 of the step 6 of the door frame 1 by screws 14, while the carrier plate 13 carrying the magnets 9 can be positioned by means of adjusting spindles 15 relative to the fastening plate 12, and thus the entire door arrangement can be positioned along the first horizontal direction X. By an actuation of the adjusting spindles 15, the magnets 9 are therefore moved along the first horizontal direction X, wherein, when a door leaf 2 is closed, the gap remaining relative to the portion 10 of magnetic material may be made larger and smaller. In this way, it is possible to adjust the closing forces of the magnetic closure device 4.

(18) In FIGS. 3 and 4, it is also evident that the fastening plate 12 has openings, through which the magnets 9 are guided.

(19) The specific structural shape of the magnet arrangement 7 as well as the configuration of the positioning is purely exemplary.

(20) According to FIG. 4, the magnets 9 disposed one above the other have an alternating polarity. The magnets 9 are aligned along the first horizontal direction X and, when a door leaf 2 is closed, point in the direction of the portion 10 of magnetic material, which is then adjacent.

(21) In order to permit an easy movement of the magnets 9 and to prevent an impairment of the closing forces, the fastening plate 12 is expediently made from a nonmagnetic metal. In contrast, the carrier plate 13 is preferably made from a magnetic material, especially a ferromagnetic material, in order to form a kind of magnetic yoke element. Thereby the closing forces may also be enhanced, and undesired magnetic stray fields are also reduced.

(22) Individual magnetic-field lines are illustrated by way of example in FIG. 4, wherein the door leaf 2 is open and thus the field lines are able to emerge on the front side of the magnet arrangement 7. Due to the alternating polarities of the magnets 9, however, a large zone of influence of the magnetic forces, which may be disadvantageous for a user, is prevented.

(23) The arrangement of the at least one magnetic closure device 4 on the door arrangement is illustrated particularly clearly in FIGS. 5a and 5b. Accordingly, the door frame 1 has the step 6 described in the foregoing, in order to form a stop for the door leaf 2. This step comprises a stop angle-piece 16, against which the rim of the door leaf 2 bears via the door seal 5. For this purpose, the door seal 5 is held in a seal groove 17 machined in the stop angle piece 16.

(24) In FIG. 5b, which shows the door leaf 2 in its closed position, the clear gap is evident between the magnets 9 of the magnet arrangement 7 on the one hand and the portion 10, configured as a sheet-metal angle piece, of magnetic material.

(25) Since the magnet arrangement 7 is inserted in the lateral arm 8, it is hardly perceptible for the user, especially when the door leaf 2 is closed. The same is also true for the portion 10 of magnetic material, which in the closed position of the door leaf 2 is also covered at least partly by the door seal 5.

(26) According to the horizontal section of FIGS. 5a and 5b along the first horizontal direction X as well as the second horizontal direction Y, the stop angle piece 16 as well as the lateral arm 8 on the step are disposed at right angles to one another. The inconspicuous integration of the magnet arrangement 7 in the lateral arm 8 is also supported by the fact that, in the illustrated exemplary embodiment, the magnet arrangement 7 is partly concealed by the door seal 5 when the door leaf 2 is open.

(27) It is also evident from FIGS. 5a and 5b that the door leaf 2 can be disposed, in simple manner, flush with a front side 18 of the door frame 1, by an appropriate modification of the geometry.