GB2070129A

GB2070129A - A Hinge

Info

Publication number: GB2070129A
Application number: GB8100360A
Authority: GB
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 1980-01-15
Filing date: 1981-01-07
Publication date: 1981-09-03
Also published as: DE3100526A1; DE3100526C2; SE8009055L; AT369107B; ATA18280A

Abstract

A hinge for opening a door (1) up to an angle of about 180 DEG . A mounting plate (4) and a hinge casing (3) are connected by two hinge arms (5, 12). The movement of the hinge arms (5, 12) is controlled in respect of each other by a rack (13, 14) and pinion (8) arrangement. One hinge arm (5) carries the pinion (8) and this hinge arm (5) is guided at two points of connection in guiding grooves (10, 11) in the mounting plate (4). The guiding groove 11 is in the form of a curved slideway. <IMAGE>

Description

SPECIFICATION A hinge This invention relates to a hinge having an opening angle of about 1 800C, comprising a base plate fastenable to a wall of the piece of furniture and a hinge casing or the like fastenable to a door wing and, for example, insertable into a drill hole in said door wing, said base plate and said hinge casing being linked to each other by means of hinge arms, the first of said hinge arms being movable in guiding grooves or the like in the base plate or in an intermediate member fastened to said base plate, the second of said hinge arms being coupled to a slide on the side of the base plate, said slide being movably guided in longitudinal direction in said first hinge arm, said first hinge arm being provided with at least one, preferably two toothed wheels, said wheel or said wheels meating or the base plate or the intermediate member and the slide by means of a rack profile.

Hinges of this kind are used in furniture constructions, when the door should be opened ba more than 900 in order to ensure a better access to the interior of the piece of furniture. When fully opened, the door should be spaced from the body of the piece of furniture in order to prevent it from pushing against an adjacent door.

In conventional hinges, the large opening angle is obtained by means of crossed hinge arms or links.

Such hinges have the disadvantage that the hinge arms resp. links protrude far into the interior of the piece of furniture, when the hinge is closed, so that storing space is lost.

With hinges in which the two hinge arms are linked by a toothed wheel by means of rack profiles, thus obtaining a very flat design, much space between adjacent doors is necessary as the function of such hinges is similar to the one of a one-axle hinge.

Examples for the prior art mentioned above are shown in the Swiss patent specification No 480 525 and German applications 1 958 983, 2 204 828 and2 756319.

It is, therefore, the object of the invention to provide a hinge of the afore-described kind, with an opening angle of about 1800, of extremely flat design and having the same advantages and at least approximately the same course of motions conventional four-axle hinges.

According to the invention, this is achieved by guiding the first hinge arm carrying the toothed wheel or wheels in its longitudinal direction in a slide way or slide ways by means of two points of connection and by guiding at least one of said points of connection in a curved slide way.

A preferred embodiment of the invention provides that said first hinge arm carrying the toothed wheels is at the toothed wheels guided in a slide way of the base plate curved to the mounting plane, the rack profile or profiles of the base plate being adapted to the curvature of said slide way.

By means of this embodiment, the door is, during the opening process, spaced from the furniture side wall in a direction normal to said side wall.

Hence, the opening of the door is not impeded, even when a second door or a wall lies adjacent thereto. The slide way is preferably formed by two slots on both sides of the base plate, the axle of the toothed wheel or wheels extending through said slots. The axle is one point of connection.

Optimal guiding of the door is obtained in that the vertex of the slide way coincides with that point of the slide way which is remotest from the mounting plane of the base plate.

The slide is advantageously mounted by providing it with lateral flanges extending into grooves in the hinge arm, or vice versa, by arranging the grooves in the slide and the lateral flanges on the hinge arm.

A further advantageous embodiment of the invention provides that the hinge arm carrying the slide comprises two members, i.e. two lateral members linked to each other by means of axles, one of said axles being the bearing axle of the toothed wheels. Each axle forming one point of connection.

It is preferably provided that the hinge arm coupled to the slide is on the side of the hinge casing fastened to a seat of the hinge casing, said seat projecting from the hinge casing. It is further provided that the base plate is at its front face provided with a recess into which the seat of the hinge casing extends, when the hinge is closed.

The recess in the base plate is dimensioned in such a manner that the side walls form lateral guiding means for the inserted seat. When the hinge is in the closed position, the weight of the door wing does not exclusively rest on the hinge axles.

By means of this embodiment, the stability of the closed hinge is substantially increased.

Optimal guiding of the hinge arms is obtained by adapting the slide way to rise from the mounting plane of the base plate towards the rear of the base plate, the first hinge arm is, at its end directed away from the hinge casing, movably guided in said slide way in a conventional manner.

In the following various embodiments of the invention will be described in greater detail by means of the figures of the drawing without being limited thereto.

Figures 1 through 6 show schematic side views of an embodiment of the hinge in different positions, from the closed position to the maximum opening position, one side of the hinge arm not being illustrated for reasons of clearness, Figure 7 shows a top view of a hinge according to the invention in the 900 open position.

Figure 8 shows a side view of the connection between a hinge arm axle and the hinge arm, Figure 9 shows a sectional view along line I-I of Fig. 8, Figure 10 shows a side view of a part of the hinge arm seen from the center of the hinge, Figure 11 shows a side view of a second embodiment of a hinge in the closed position, Figure 12 shows a top view, and Figure 13 shows a front view without the hinge casing.

The hinge according to the invention comprises a base plate 4 fastenable to a furniture side wall 2 and a hinge casing 3 insertable into a door 1.

The hinge casing 3 and the base plate 4 are coupled to each other by means of hinge arms 5 and 12. The hinge arm 5, which consists in the embodiment according to figures 1 through 10 of the two hinge arm members 5' arranged on both sides of the base plate 4, are coupled to the hinge casing 3 by means of the hinge axle 1 7.

On the side of the furniture body, the hinge arm 5 is mounted in a slide way 10 in the base plate 4 by means of an axle 9 linking the two hinge arm members 5' and forming a point of connection, the slide way 10 is formed by one or two slots in the base plate 4.

The hinge arm 12 is coupled to the hinge casing 3 by means of an axle 19, i.e. to a seat 1 6 projecting from the hinge casing 3. On its other side, the hinge arm 12 is fastened to a slide 7 by means of an axle 20. The slide 7 is mounted in the hinge arm 5, i.e. the slide is provided with lateral flanges 1 8 extending into grooves 1 5 of the hinge arm members 5', whereby the slide 7 is movably arranged in the hinge arm 5.

Approximately in its center, the hinge arm 5 is provided with an axle 21 forming the second point of connection. In the first embodiment, the axle 21 carries a toothed wheel 8 on both sides.

Said axle 21 extends through a slide way 11 in the base plate 4, said slide way 11 being of approximately V-shaped configuration, as can be seen from the figures of the drawing.

Below the slide way 11, a rack profile 13 is arranged on each side of the base plate 4.

The slide 7 is also provided with one or two rack profiles 14, the toothed wheels 8 mating the two rack profiles 14 and 13.

When the door 1 is opened, the slide 7 is pulled out of the body of the piece of furniture by the hinge arm 12.

Hence, the slide 7 rotates the toothed wheels 8 which move on the rack profiles 13 of the base plate 4. The hinge arm 5 is, thus, moved forward on the base plate 4, and the slide 7 moves at the same time twice the distance in respect of the base plate 4.

Because of the special design of the slide way 11, i.e. its V-shaped curvature, the hinge arm 5 and, hence, all coupling points of the hinge casing 3 are lifted form the furniture side wall 2 in the direction of arrow A during the opening process. It is, therefore, possible to open the door 1, even when a second door or another hindrance lies adjacent to the door 1. This has been indicated in figures 1 and 2 by B. The curvature of the slide way could also describe the three shorter sides of a trapezoid.

The base plate 4 is, at its front face directed towards the door 1, provided with a recess 22.

When the door 1 is closed, the seat 1 6 of the hinge casing 3 extends into said recess 22.

By dimensioning the breadth of the recess 22 in such a manner that the seat 1 6 fits closely therein, additional guiding and retaining means in the height of the piece of furniture are provided for the closed wide angle hinge. Moreover, the weight of the door 1 is transferred to the base plate 4 not exclusively by the hinge arm axles and the hinge arms.

Figures 8 and 9 shows the way of fastening the axle 9 to the hinge arm members 5'. The axle 9 extends on each side through an aperture 23 in the hinge arm member 5' and has a tapered portion 9' in the region of the hinge arm member 5'.

Channels 24 are provided in the hinge arm member 5'. A spring 19 engaging the annular groove of the axle 9 formed by the tapered portion 9' extends into said channels 24. Due to the fact that the channels 24 taper off towards the top, the spring 1 9 must be slightly pressed together, when being inserted. When said spring has been inserted into the channels 24 to a certain extent, the spring 1 9 is automatically pulled into the position illustrated in the figures of the drawing.

In the embodiment according to figures 11 through 13, one toothed wheel or toothed roll 8 only is mounted on the hinge arm 5. Said toothed wheel 8 is concentrically arranged and lies between two lateral flanges of the base plate 4, the slots 10 and the slots for the slide way 11 being arranged in said slots.

In this embodiment, the slots for the slide way 11 and for the rear slide way 10 0 extend into one another, and, hence, form a common continuous slot 10, 11 on both sides of the base plate 4.

On the rear end, the slot 10 turns slightly upwards, i.e. it mounts slightly from the mounting plane. Hence, the rear end of the hinge arm 5 is lowered first, when the hinge is opened. A particularly advantageous motion of the hinge arm 5 is, thus, obtained.

The rack profile 13 is concentrically arranged on the base plate 4.

In this embodiment, the hinge arm 5 is of one piece and of U-shaped cross-section. The slide 7 is inserted into said U from one end of the hinge arm 5 and covered by the hinge arm 5, when the hinge has been assembled.

The base plate 4 is retained on the furniture side wall 2 by means of two screws 17 and an adjusting screw 1 8. The mounting face of the base plate 4 is designed to comprise two sections 4' meeting in a supporting rim 4" aligned parallel to the rotational axis of the wide angle hinge. In the embodiment, the base plate 4 is tiltable about the rim 4" on the furniture side wall 2.

In the region of the screws 17, 18, the base plate 4 is provided with U-shaped recesses which are open on one side, i.e. it is possible to screw the screws 17, 18 into the furniture side wall 2 and to insert, subsequently, the base plate 4 together with the hinge arms below the screws 1 7, 18.

Because of the tiltable arrangement of the base plate 4 it is possible to effect a side adjustment of the hinge by turning the adjusting screw 18.

Subsequently, the screws 1 7 are fastened.

The screws 1 7 can obviously be replaced by dowels.

Claims

1. A hinge having an opening angle of about 1 80o, comprising a base plate fastenable to a wall of a piece of furniture and a hinge casing or the like fastenable to a door wing and, for example, insertable into a drill hole in said door wing, said base plate and said hinge casing being linked to each other by means of hinge arms, the first of said hinge arms being movable in guiding grooves or the like in the base plate or in an intermediate member fastened to said base plate, the second of said hinge arms being coupled to a slide on the side of the base plate, said slide being movably guided in longitudinal direction in said first hinge arm, said first hinge arm being provided with at least one, preferably two toothed wheels, said wheel or said wheels mating by means of a rack profile the base plate or the intermediate member and the slide, wherein said first hinge arm carrying the toothed wheel or wheels is in its longitudinal direction guided in a slide way or slide ways at two points of connection, and wherein at least one of said points of connection is guided in a curved slide way.

2. A hinge according to claim 1, wherein said first hinge arm carrying said toothed wheel or wheels at which is one point of connection is, in the region of said toothed wheels, guided in a slide way curved towards the mounting plane, the rack profile or profiles of said base plate being adapted to the curvature of said slide way.

3. A hinge according to claim 2, wherein said slide way is formed by two slots arranged on both sides of said base plate, the axle of said toothed wheel or wheels extending through said slots.

4. A hinge according to claims 2 and/or 3, wherein the vertex of said slide way coincides with that point of said slide way which is remotest from the mounting plane of said base plate.

5. A hinge according to claim 1, wherein said slide is provided with lateral flanges extending into grooves in said hinge arm.

6. A hinge according to claims 1 and/or 5, wherein said hinge arm carrying said slide comprises two members.

7. A hinge according to claim 1, wherein said hinge arm coupled to said slide is on the side of said hinge casing fastened to a seat of said hinge casing, said seat projecting from said hinge casing.

8. A hinge according to claim 7, wherein said base plate is provided with a recess, said seat of said hinge casing extending into said recess, when the hinge is closed.

9. A hinge according to one of claims 1 through 9, wherein said slide way rises from the mounting plane of said base plate towards the rear end of said base plate, said first hinge arm on the end directed away from said hinge casing being movably guided in said slide way in a conventional manner.

10. A hinge according to at least one of claims 1 through 9, wherein said slide way for the rear end af said first hinge arm and said slide way for said first hinge arm extend into one another

11. A hinge substantially as hereinbefore described with reference to the accompanying drawing.