WO1996014489A1

WO1996014489A1 - Door hinge

Info

Publication number: WO1996014489A1
Application number: PCT/DE1995/001540
Authority: WO
Inventors: Hans Grzeskowiak
Original assignee: Hans Grzeskowiak
Priority date: 1994-11-07
Filing date: 1995-11-07
Publication date: 1996-05-17
Also published as: EP0750714A1; DE19541346A1; DE19541346C2

Abstract

The description relates to a door hinge plate with frame (12) and wing (14) sections which can be fitted together and can be relatively rotated in which, during the relative rotation, the two sections have a raising action towards the hinge pin. This construction ensures that when the door is opened, it is raised from the floor to an increasing degree as it is opened. When the door is flush with the frame, therefore, there is a very small gap between it and the floor. This virtually excludes heat losses through draughts beneath the door. Doors fitted with the hinge of the invention can be adapted for height over a wide range to unevenesses in or newly laid floorings.

Description

DOOR B TO D

The present invention relates to a door hinge according to the preamble of patent claim 1.

Such door hinges are known and are used for the rotatable mounting of a wide variety of types of doors. Such a door hinge has a lower rotating part or frame part to be fastened to the door frame and also an upper rotating part or wing part to be fastened to the door. Frame part and wing part can be inserted into each other and rotated relative to each other. The rotatable mounting is usually achieved in that an upwardly facing pivot pin is attached to the frame part, which engages in a corresponding hole in the wing part.

The frame part or wing part can be fastened in the door frame or on the door in a wide variety of ways and is to be explained below using a frame part as an example.

On the one hand, so-called plug-in frame parts are known which have several smooth or scaled bolts perpendicular to the axis of rotation, which are hammered or glued into the door frame. So-called boring frame parts are also known, in which a single bolt standing perpendicular to the axis of rotation is provided with an external thread which is screwed into a corresponding internal thread of the door frame. A variant of boring frame parts is also known, in which a plurality of bolts perpendicular to the axis of rotation are provided, which have an external thread at their end. These bolts are inserted into corresponding bores in the door frame and then fastened with screw nuts inserted into the door frame from the side. In yet another embodiment, the so-called rag frame part, not one or more bolts are attached to the axis of rotation, but rather a rag-like plate which is inserted and fastened in a corresponding slot in the door frame.

The fastening variants mentioned are also available for the corresponding wing parts. 96/144 PCI7DE95 / 01540

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2 The door hinges described so far are all in two parts. However, the invention also relates to three-part door hinges in which one part, e.g. the frame part consists of two parts and the other part, e.g. the wing part consists of one part. In this

Fall engage the bolts of the two frame parts from above and below in the wing part.

Another alternative of wing parts is known for the glass door application. In this case, the wing part does not have a fastening bolt to be inserted into the glass door, but rather e.g. a holding device for the glass pane padded with rubber layers.

All of the above-mentioned embodiments are produced in large numbers and are therefore standardized or standardized. This applies in particular to the dimensions of the fastening bolts and the distances between them.

All of the above door hinges have a significant disadvantage.

The door equipped with the wing parts is hooked into the frame provided with the frame parts and, in the installed state, has a small gap to the floor at the lower end. Due to inaccuracies in construction or due to disregarding the floor coverings, e.g. Linoleum, carpeting or parquet flooring can cause the door to rest on or rub against the floor covering.

Minor irregularities in the range of approximately 1 or 2 mm can be compensated for by placing washers on the pivot bolts of the frame parts. As a result, the door is raised in relation to the floor. This compensation is limited, however, since the door bumps against the upper edge in the door frame if it is lifted too strongly.

Larger inaccuracies, such as those that result from the subsequent laying of high-pile carpets or parquet floors, must therefore be eliminated by planing the door on the lower edge. If a thinner floor covering is subsequently to be used, the door is irreparably damaged by the planing and has an often finger-wide gap to the floor. However, this is undesirable for optical reasons and for reasons of thermal insulation.

A similar problem arises when a carpet, such as a runner, is rolled out near a door. The door then has the desired low gap, but then hits the carpet when opened. Either the door cannot be opened further or the carpet is permanently damaged.

Particular problems also arise when using glass doors, in which grinding is not always possible without problems. In any case, i.e. even if grinding is possible, the undesirable large gap remains.

There has been no solution to the above problems.

It is therefore an object of the present invention to provide a device with which the height of a door can be adapted to inaccuracies or newly installed floor coverings.

To solve this problem, a door hinge of the type mentioned at the beginning is proposed, which is characterized by a lifting device which raises the wing part relative to the frame part when the two are rotated relative to one another in the direction of the axis of rotation.

This design ensures that the door, as soon as it is opened, lifts off the floor and moves further and further as it rotates.

As a result, the door can practically rest on the floor in the region of the door frame, so that a very small gap is formed, if at all. This practically eliminates heat losses caused by drafts under the doors.

Advantageous embodiments of this invention are the subject of the dependent claims.

Thus, it is particularly preferred if the lifting device comprises a movement screw consisting of screw bolts and screw nuts, one part of the movement screw being fastened to the frame part and the other part of the movement screw being attached to the wing part or being formed integrally therewith.

The extent of the lifting can be varied by means of the freely adjustable movement screw.

A further, very particularly preferred embodiment provides that the lifting device comprises a bolt, the lower part of which is designed as a movement screw bolt, which engages in an internal thread of the frame part, and the upper part of which is designed as a cylindrical pivot bolt which engages in a bore of the Wing part engages, the bolt on both _*

4 ends has an internal thread for a fastening screw, with which the bolt can be fastened either to the frame part or to the wing part.

This training has two significant advantages.

If the bolt is fastened to the frame part with the fastening screw, the movement of the movement screw is blocked, so that a door hinge results which corresponds to the standard design with its advantages and disadvantages which is common today.

This function of the door hinge can e.g. be selected when all dimensions of the door have been adhered to exactly and there are no problems.

If this is not the case, or e.g. problems due to a new carpet, so simply remove the mentioned fastening screw and screw it into the bolt from the other side. As a result, the bolt is fastened to the wing part, as a result of which the movement screw can now perform its function and lift the door when it is opened.

Another very important advantage of this function is, however, that the initial height of the door, i.e. the height of the door when closed, can be adjusted in this position. This is because the door can be locked to a certain height by unscrewing the movement screw and then tightening the fastening screw. This function replaces the adjustment known from the prior art by means of washers. This function is not only replaced, but also improved in that the door can be adjusted continuously and in the installed state, i.e. does not have to be unhinged.

The unscrewing of the movement screw for the aforementioned purpose is particularly facilitated if the bolt has a central section that can be rotated by means of a tool, such as a square or corner section or the like.

From a manufacturing point of view, it is particularly preferred if the movement screw has a trapezoidal or flat thread.

The present invention is described below using an exemplary embodiment and with reference to the following drawing figures, which show the following: FIG. 1 shows an embodiment of a door hinge according to the invention in an exploded view;

Figure 2 shows the embodiment of Figure 1 in a standard installation condition, i.e. only with rotating but without lifting function;

FIG. 3 shows the embodiment from FIG. 1 in an installed state with a turning and lifting function;

FIG. 4 shows the lifting strap from FIG. 3, in which the initial height is preset by unscrewing the movement screw;

Figure 5 shows a hinge according to the prior art.

FIG. 5 shows a typical door hinge 1 according to the prior art, namely a two-part insert door hinge 1. The door hinge 1 consists of a lower rotating part or frame part 2 to be inserted into the door frame. The frame part 2 consists of an essentially cylindrical body 3, with which a stepped cylindrical pivot pin 4 is integrally formed. The central longitudinal axis M of these two parts simultaneously forms the axis of rotation for the door hinge 1. At the lower cylindrical part 3 of the frame part 2 two cylindrical bolts 7 are formed perpendicular to the axis of rotation M, with the aid of which the frame part 2 is not shown in the here door frame shown is used.

In the embodiment shown, as already mentioned above, it is an insert door hinge 1, so that the bolts 7 do not have a thread. The insert door hinge 1 further consists of an upper rotating part or leaf part 5 to be fastened in the door leaf. This leaf part 5 has a likewise cylindrical body 6 which has a bore for receiving the pivot pin 4 of the frame part 2. To fasten the wing part 5 in the door, not shown here, a bolt 8 is provided perpendicular to the axis of rotation M and likewise has no thread.

In the installed state, the pivot pin 4 of the frame part 2 projects into the bore of the wing part 5, the underside 9 of the wing part 5 resting on the top 10 of the frame part 2. To compensate for height differences, a washer can also be located between these two surfaces 9 and 10. In contrast, an embodiment of the door hinge 11 according to the invention is constructed as shown in FIG. The door hinge 11 has a frame part 12 with a cylindrical base body 13 and with cylindrical fastening bolts 16 mounted perpendicular to the central axis M. There is a through bore 18 in the frame part, at least a partial section of the bore 18 being provided with a movement thread such as a trapezoidal thread 19. This section can be introduced adjacent to the upper or lower edge of the frame part 12 or else within the cylindrical base body 13. It is also possible to design the entire bore 18 as a trapezoidal thread 19.

The lifting strap 11 also has a wing part 14 with a cylindrical base body 15 and fastening bolts 17 mounted thereon perpendicular to the axis of rotation. The wing part 14 is provided with a longitudinal bore 20.

The lifting strap 11 also consists of an essentially cylindrical pin 21. This pivot pin 21 is formed in its upper part as a cylindrical pivot pin 22 which engages in the bore 20 of the wing part 14. The lower part 23 of the bolt 21 is designed as a movement screw bolt with a trapezoidal thread, which engages in the internal thread section 19 of the frame part 12.

In the middle between the two sections 22, 23 of the bolt 21 is a narrow hex flange 26, the function of which will be described below.

Furthermore, at both ends of the bolt 21 there is an internal thread 24 or 25 for a fastening screw 27, with which the bolt 21 can be fastened either to the frame part 12 or to the wing part 14, as will be explained below.

FIG. 2 shows the installed state of the door hinge 11, the function of which corresponds to that of the conventional door hinge 1 shown in FIG. 5 according to the prior art.

The frame part 12 is inserted in the door frame 28 shown schematically and the wing part 14 is inserted in the door 29 shown schematically. The trapezoidal thread portion 23 of the bolt 21 is located in the threaded portion 19 of the frame part 12, the bolt 21 being fastened to the frame part 12 in that the fastening screw 27 from below through the bore 18 of the frame part 12 into the internal thread 25 of the bolt portion 23 is screwed in. As a result, no relative movement of the bolt 21 to the frame part 12 is possible, be it in the direction of the axis of rotation M or around the axis of rotation M. The upper cylindrical pivot pin section 22 of the pin 21, on the other hand, projects freely into the bore 20 of the frame part 14, so that the door 29 with the frame part 14 can be pushed onto the pivot pin section 22 and can rotate against the latter about the axis of rotation M.

In contrast, FIG. 3 shows an installed state of the door hinge 11 according to the invention, which can carry out an additional function, namely the function referred to here as the lifting function.

The frame part 12 is in turn inserted into the door frame 28, the wing part 14 into the door 29.

The movement bolt section 23 of the bolt 21 is in turn inserted into the trapezoidal thread 19 of the frame part 12, but is not secured from below with the fastening screw 27.

The pivot pin section 22 of the bolt 21 projects into the bore 20 of the frame part 14, these two parts being fastened to one another by the fastening screw 27 which projects through the bore 20 of the wing part 14 into the internal thread 24 of the pivot pin section 22 of the bolt 21. Ie, rotation of the door 29 with the wing part 14 fastened therein also causes rotation of the pivot pin section 22 and thus of the entire bolt 21. Since the door frame 28 with the frame part 12 fastened therein, the relative rotation of the bolt 21 causes more precisely the trapezoidal and internal thread against each other, that door 29 and the wing part 14 in the direction of the axis of rotation M upwards from the door frame 28 and the frame part 12 fastened therein.

The ratio of the opening angle of the door 29 to the raised height depends on the pitch of the trapezoidal thread and can be adapted to the circumstances and is e.g. 15 mm with an opening angle of 90 °.

By changing the fastening screw 27, which can also be a hexagon socket screw, from the underside of the door hinge 11 to its top, the function of the door hinge 11 can be changed from the standard function, ie only rotation, to the lifting function, as far as the circumstances are require. This can be the case, for example, if a carpet is to be laid in front of a door at a point where there was previously no carpet, against which the door would otherwise knock. In the installation position with lifting function according to FIG. 3 there is still another setting option, as shown in FIG. 4. Due to inaccurate planning, or due to thicker floor coverings subsequently installed, it may happen that the door frame 28 is too low in relation to the door 29 because it has either been installed too deep or because the door 29 rests on a floor covering installed in the door frame area. Such differences in height, as shown above, are eliminated in the prior art by lifting the door 29 off its hinges and filling the space between the two parts of the belt with washers. This method is cumbersome and time-consuming and can be improved with the presented embodiment of the device according to the invention. To do this, proceed as follows:

The bolt 21 is loosely screwed into the frame part 12. Then the door 29 with the wing parts 14 fastened therein is placed on the pivot pin section 22 of the pin 21. The fastening screw 27 is then loosely screwed into the internal thread 24 of the pivot pin section 22 by hand. The door 29 is then closed, whereupon the central section 26 of the bolt 21, which is provided with a hexagon, is rotated with a narrow special wrench, so that the trapezoidal thread section 23 of the bolt 21 lifts out of the frame part 12. This also raises the door 29. The bolt 21 is turned out until the door 29 can be moved over it with a small gap remaining to the floor covering. Then the fastening screw 27 is tightened with an Allen key, so that the bolt 21 is fixed in this relative rotational position to the wing part 14. This fixation fixes the initial height H in the corresponding door position.

At this point, another effect of the door hinge 11 in the position with lifting function will be described. Due to the dead weight of the door 29, which acts on the trapezoidal thread via the wing part 14, this rotates back into its starting position, i.e. the door 29 closes automatically after opening.

In particular, conventional steel alloys or other metal alloys come into consideration as material for the door hinge according to the invention. The parts can be produced by all customary production methods, in particular by casting. 4

9 Within the scope of the invention, a large number of deviations from the above-described embodiment are conceivable, in particular the designs mentioned at the beginning as lobes or screw-in parts, for glass doors and door hinges in two and three-part designs.

All of these embodiments are intended to be included within the scope of the following claims.

Claims

Patent claims

1. door hinge, with a frame part, and with a wing part, which can be inserted into one another and rotated relative to one another, characterized by a wing part (14) relative to the frame part (12) with relative rotation of the two in the direction of the axis of rotation (M ) lifting device.

2. Door hinge according to claim 1, characterized in that the lifting device comprises a movement screw consisting of bolts and screw nuts, one part of the movement screw on the frame part (12) and the other part of the movement screw on the wing part (14) or is integrally formed with this.

3. Hinge according to claim 1 or 2, characterized in that the lifting device comprises a bolt (21), the lower part of which is designed as a movement screw bolt (23) which engages in an internal thread (19) of the frame part (12), and the upper part thereof Part is designed as a cylindrical pivot bolt (22) which engages in a bore (20) in the wing part (14), the bolt (21) having an internal thread (24, 25) for a fastening screw (27) at both ends, with which the bolt (21) can be attached either to the frame part (12) or to the wing part (14).

4. Door hinge according to claim 3, characterized in that the bolt (21) has a central section (26) rotatable by means of a tool, such as a square or hexagonal section or the like.

5. Hinge according to one of claims 1 to 4, characterized in that the Bewegungs¬ screw (23, 19) has a trapezoidal or flat thread.