EP2078475A1 - Leg overlay lining for an item of furniture - Google Patents

Abstract

The leg rest fitting (1) enables reversible adjustment of a furniture leg rest (5) between a rest position and an operating position with a displacement unit (2) and a pivoting unit (3) with two joint elements (11,12). A first joint element of the two joint elements is essentially fully enclosed by a second joint element.

Description

The invention relates to a leg rest fitting for a piece of furniture.

Leg rest fittings find their use in pull-out leg rests or foot rests on furniture, such as armchairs. Although suitable for seating, here is an armchair explained as an example.

A removable legrest is housed in a rest position below a seat portion of a chair. To adjust to a position of use, the leg rest is detected at its front edge and pulled out from under the chair, where it is then adjusted to its use position up to the height of the seat part, and in this position of use as a support for the legs and / or feet in the seat part person serves. To adjust to the resting position, the leg rest is pushed down and pushed under the seat part of the chair.

An attached under the armchair displacement unit allows a horizontal adjustment of the legrest, a pivoting unit allows a height adjustment. It is usual that the displacement unit has two guides, which are arranged under the seat part of the chair on both inner sides of, for example, side parts of the chair. On each guide a carriage is slidably mounted. These carriages can be mechanically coupled across the width of the chair with crossbars on which there is at least one pivot unit with the leg rest. Due to the large distance between the guides certain measures must be taken to prevent jamming or tilting when moving. This can adversely affect the assembly, the number of components and in the ground clearance of a chair.

The pivot units are often designed as four-bar linkages with two levers and, for example, springs for holding in an upper position. To stability A swivel unit may be required on each side. Such lever mechanism can form a risk of jamming and crushing and are therefore subjected to the relevant regulations with special design and protective measures.

The DE 203 05 855 U1 describes a chair with such a lifting fitting with a leg rest.

In order to meet current demands for low ground clearance and great design possibilities in the furniture sector, the known solutions are hardly or only with increased effort suitable.

It is therefore the object of the present invention to provide a leg rest fitting which completely or partially eliminates the above disadvantages and enables further advantages.

The object is achieved by a leg rest fitting with the features of claim 1.

A basic idea of the invention consists in that a first joint element of the pivoting unit is arranged in a second joint element and is enveloped by the same. This results in a particularly compact and design-neutral design, in which there is no risk of crushing or jamming between levers.

Furthermore, the number of components compared to the prior art is reduced, resulting in an increased efficiency, even when installing the assembly results. It is possible that the displacement unit can be easily adapted to the conditions in a specific frame on site. A high dimensional variability, for example seat width, seat depth and size of the leg support plate is made possible.

An inventive leg rest fitting for the reversible adjustment of a leg rest of a furniture from a rest position to a position of use with a displacement unit and a pivot unit with two hinge elements is characterized in that a first hinge element of the two hinge elements is substantially completely surrounded by a second hinge element of the two hinge elements. The second joint element may be, for example, a pipe with a rectangular cross-section, in which the first joint element is arranged in the form of a lever and has corresponding freedom of movement during a pivoting operation. Interference with the pipe is not possible, which eliminates the need for additional protective measures.

Further features and advantages of the operating unit according to the invention are the subject of the associated dependent claims.

It is provided in a particularly preferred embodiment that the leg rest fitting is centrally mounted under the chair. By its construction, it is possible that a double attachment, one guide per page, can be omitted in the furniture. The complete fitting is held in place by six screws (four for attaching the sliding unit and two for attaching the leg rest). This results, together with the entire construction, a usability in seating systems with a ground clearance from 120 mm (in contrast to the prior art from 150 mm).

The hinge elements are articulated at one end to the displacement unit via a slide in each case a hinge axis and articulated with a respective other end to the leg rest in each case a hinge axis. For the most part, these joints are located outside of an intervention area, thereby increasing safety. A slim design and a slim design are advantageously possible.

In a preferred embodiment, the second joint element is connected to at least one arranged on the carriage force storage element, such as a compression spring or a gas spring, cooperatively connected. That's it second hinge element connected to the at least one force storage element via a drive portion which forms an extension of the second hinge element on the associated hinge axis addition. It when the power storage element is disposed within the carriage, wherein the carriage is arranged slidably connected to two guide elements of the displacement unit is particularly advantageous.

It is preferably provided that the two guide elements of the displacement unit are arranged parallel to each other at a small distance, for example 8 to 10 cm. This results in a large Verklemmungs- and Verkantungsfreiheit.

In one embodiment, the guide elements are formed as guide rails, in which the carriage by means of support elements, such as rollers or sliders, is guided displaceably. The guide rails may be, for example, C and / or U-rail profiles.

In an alternative embodiment, the guide elements are designed as rods and / or tubes, on which the carriage is guided displaceably by means of bushings and / or rollers. This results in an advantageous noiseless run. The rollers, for example made of a suitable plastic, can be mounted on ball bearings or directly on bolts. Here are two lower guide rollers under a guide element, for example rod or tube with a circular cross-section, and provided at least one overlying roller. This counter-roller can be designed to change a distance between it and the guide rollers with a suitable attachment, for example, eccentric attachment, whereby a game setting, running characteristics, running noise, etc. are individually influenced

Alternatively or additionally, can be arranged on the slide between this and the guide elements adjustable sliding elements which can be brought into cooperation with the guide elements, wherein they are adjustable in the transverse direction to the guide elements.

It is further preferred in one embodiment that the carriage has a stop portion with a holding element for cooperation with a fastening element for holding and / or centered holding in the position of use. This can be for example a magnet. However, it is possible to provide instead of or in addition a pin with a corresponding receptacle, whereby the carriage is locked and centered particularly advantageous in the operating position of the leg rest fitting.

It is further provided that the displacement unit has a hold-down, which cooperates in the rest position with an outer side of the second joint element. This avoids that, in contrast to the prior art, the pad of the leg rest is used as an attachment, which accounts for example pressure points in the upholstery.

Fig. 1

eine schematische perspektivische Teilschnittansicht eines Möbels mit einem ersten Ausführungsbeispiel eines erfindungsgemäßen Beinauflagenbeschlags in einer Gebrauchslage;

Fig. 2

eine Querschnittansicht längs einer Achse im vorderen Drittel des Möbels nach Fig. 1;

Fig. 3

eine vergrößerte Schnittdarstellung des rechten Abschnitts nach Fig. 2;

Fig. 4

die Ansicht nach Fig. 2 mit Darstellung einer Zwischenlage des erfindungsgemäßen Beinauflagenbeschlags;

Fig. 5

die Ansicht nach Fig. 2 mit Darstellung einer Ruhelage des erfindungsgemäßen Beinauflagenbeschlags;

Fig. 6

eine perspektivische Ausschnittdarstellung einer Verschiebeeinheit des ersten Ausführungsbeispiels des erfindungsgemäßen Beinauflagenbeschlags nach Fig. 1 bis 5;

Fig. 7

eine perspektivische Ausschnittdarstellung einer Variation der Verschiebeeinheit des ersten Ausführungsbeispiels nach Fig. 6;

Fig. 8

eine perspektivische Ausschnittdarstellung der Verschiebeeinheit eines zweiten Ausführungsbeispiels des erfindungsgemäßen Beinauflagenbeschlags;

Fig. 9

eine perspektivische Ausschnittdarstellung der Verschiebeeinheit eines dritten Ausführungsbeispiels des erfindungsgemäßen Beinauflagenbeschlags; und

Fig. 10

eine perspektivische Ausschnittdarstellung der Verschiebeeinheit einer Variation des dritten Ausführungsbeispiels nach Fig. 9.

The invention will now be explained in more detail with reference to an embodiment with reference to the accompanying figures. Hereby show:

Fig. 1

a schematic partial perspective sectional view of a piece of furniture with a first embodiment of a leg rest fitting according to the invention in a position of use;

Fig. 2

a cross-sectional view along an axis in the front third of the cabinet Fig. 1 ;

Fig. 3

an enlarged sectional view of the right section after Fig. 2 ;

Fig. 4

the view after Fig. 2 with representation of an intermediate layer of the leg rest fitting according to the invention;

Fig. 5

the view after Fig. 2 with representation of a rest position of the leg rest fitting according to the invention;

Fig. 6

a perspective cutout view of a displacement unit of the first embodiment of the leg rest fitting according to the invention Fig. 1 to 5 ;

Fig. 7

a perspective cutout view of a variation of the displacement unit of the first embodiment according to Fig. 6 ;

Fig. 8

a perspective cutout view of the displacement unit of a second embodiment of the leg rest fitting according to the invention;

Fig. 9

a perspective cutout view of the displacement unit of a third embodiment of the leg rest fitting according to the invention; and

Fig. 10

a perspective cutout view of the displacement unit of a variation of the third embodiment according to Fig. 9 ,

Same functional elements or components with the same functions are provided in the figures with the same reference numerals.

Fig. 1 shows a schematic perspective partial sectional view of a piece of furniture 4 with a first embodiment of a leg rest fitting 1 according to the invention.

The furniture 4 is in this example an armchair with a seat part 6, a back unspecified and two side parts with armrest, of which only the left is shown, so that the view is released under the seat part 6 of the chair on the leg rest fitting 1. The leg rest fitting 1 has a displacement unit 2 mounted under the seat part 6 with fastening elements 7, for example metal angles, a pivoting unit 3 slidably connected thereto via a slide 10 with a leg rest 5 fastened thereon. The leg rest fitting 1 is illustrated here in a position of use, in which the leg rest 5 is arranged in front of the seat part 6 of the furniture 4.

The leg rest fitting 1 is mounted centrally under the furniture 4, so that only a mounting of the displacement unit 2 with the fastening elements 7 between a front panel 9 and a rear panel is required, as will be explained below.

The displacement unit 2 has two guide elements 8, of which only one is visible in this figure. Fig. 6 to 10 show to the corresponding arrangement of the two guide elements 8. On the guide elements 8, a carriage 10 in the longitudinal direction of the guide elements 8 and thus of the seat part 6 is slidably disposed. In connection with the other figures, in particular Fig. 5 to 10 , the carriage 10 is described in more detail. At the lower front side of the carriage 10, the pivot unit 3 is hingedly mounted with one end, as explained in more detail below. It consists of two joint elements 11, 12, of which only the second joint element 12 is visible, which substantially completely surrounds the first joint element 11. At the other end of the pivoting unit 3, a holder 14 for the leg rest 5 is also hinged.

Fig. 2 shows a cross-sectional view along an axis of the front third of the cabinet 4 after Fig. 1 and Fig. 3 an enlarged sectional view of the right area after Fig. 2 , It will be referred to both here Figures 2 and 3 taken.

A so-called ground clearance of the furniture 4 is meant by the distance between the lower edge of the panel 9 and the floor. It is approximately 120 mm in this example.

The guide elements 8 are attached to the fastening elements 7, for example with screws. The fasteners 7 are also bolted to the body of the furniture 4 with screws. Other fastening means are of course possible.

The carriage 10 has a hinge portion 101, a body, a guide portion 102, and a stopper portion 103. The abutment portion 103 abuts the mounting bracket 7 on the panel 9 in this position of use. The guide portion 102 is, as will be explained in detail below, slidably guided on the guide elements 8. The body connects the guide portion 102 with the hinge portion 101.

The hinge portion 101 is pivotally connected to the pivot unit 3 via pivot joints in a first and second hinge axis 16, 17. The first pivoting element 11 is a lever, for example in the form of a flat iron, and pivotally mounted at one end in the pivot joint of the first pivot axis 16. The first pivoting element 11 is extended at this end by a drive section 13, which is pivotally connected to a force storage element 21, here a gas spring, which is hinged at its other end to the carriage 10 at the top in a mounting axis 24. The other end of the first joint element 11 is articulated in a third hinge axis 18 with the holder 14 of the leg rest 5. The first joint element 11 is arranged within a second joint element 12 in its interior 15 (shown in dashed lines). The second hinge element 12 is, for example, a rectangular tube made of steel and surrounds the first hinge element 11 substantially over its entire length. The second joint element 11 is attached to the hinge portion 101 of the carriage 10 below the first hinge axis 16 in a second hinge axis 17 and hinged at its other end below the third hinge axis 18 in a fourth hinge axis 19 on the bracket 14. Joint portion 101, joint elements 11, 12 and bracket 14 form a so-called four-bar linkage.

The force storage element 21 exerts a force on the drive axle 20 of the first joint element 11 and thus holds the leg rest 5 in the position of use shown here. Fig. 3 clearly shows that the Kraftspeicherlement 21 is disposed within the carriage 10, wherein a crushing and clamping risk is significantly reduced.

To adjust the leg rest 5 with the leg rest fitting 1 in a rest position, a force is applied to the leg rest 5 with which the leg rest 5 is first pressed down until it lies below the lower edge of the trim 9. Then the leg rest 5 is pushed under the seat part 6. An intermediate layer, in which the leg rest 5 is located under the panel 9, shows Fig. 4 in a sectional view. When pressing down the leg rest 5, the gas spring 21 is tensioned.

The legrest 5 is now pushed further under the seat part 6, until the slidably guided on the guide elements 8 slide 10 abuts the left mounting bracket 7, as in Fig. 5 is shown.

Fig. 5 shows a cross-sectional view along an axis of the front third of the cabinet 4 after Fig. 1 . 2 , and 4 with representation of the rest position of the leg rest fitting 1 according to the invention.

In the rest position of the carriage 10 with the pivoting unit 3 and the leg rest 5 is completely inserted under the seat part 6 of the furniture 4. In this case, the joint element 12 and the leg rest 5 are arranged substantially horizontally and parallel to the guide elements 8. The carriage 10 is located at the stop on the left fastening element. 7

The second hinge element 12 is held in the rest position by a hold-down 22, which is provided with a support 23, for example made of plastic, wherein the hold-down 22 is in contact with a portion of the outside of the second hinge element 12. In addition, the hold-down 22 can also have further contact points with the pivot unit 3. The legrest 5 is thus not supported on any part of the furniture 4, whereby their upholstery is spared and, for example, gets no pressure points.

The FIGS. 6 to 10 show embodiments of the guide portion 102 in cooperation with the guide elements 8. In this FIGS. 6 to 10 it can be seen that the guide elements 8 are arranged parallel and at a relatively small distance (compared to the distance between the inner sides of the side parts of the furniture 4). They are according to the first embodiment Fig. 6 formed of metal rods with a circular cross-section. The carriage 10 is made of sheet metal segments which are welded together. It can also be a stamped and bent part. The guide portion 102 has two guide bushes 28 which are each slidably mounted on a guide element 8 and thus allow a displacement of the carriage 10. Their length is crucial for a clamping and Verkantungsfreiheit.

At the abutment portion 103, which is formed by a cross member, a holding element 25, for example a magnet, is mounted, which in the position of use ( Fig. 2 . 3 ) cooperates with the front mounting bracket 7.

Fig. 7 shows a variation of the guide portion 102, wherein bushings 27 are introduced in each case arranged in parallel cross beams, which are guided displaceably on the guide elements 8.

In Fig. 8 a second embodiment is shown, in which the guide elements 8 guide rails 26 have. It may be, for example, C or U-profile rails, in which support elements 104 of the carriage 10 are guided displaceably or movably. The support elements 104 may be, for example, rollers and / or sliding blocks.

Fig. 9 represents a third embodiment. Here, the guide elements 8 are formed from rods with a circular cross-section. They are guided between rollers 29 and 30, which are rotatably mounted on the sides of the carriage 10. The rollers 29 serve as guide rollers to which the roller 30 is opposed to. The roller 30 can be adjustable, for example with an eccentric mounting, which can influence the ease of movement, noise generation, etc.

Finally shows Fig. 10 a variation of the third embodiment according to Fig. 9 with two support rollers 31 as counter-rollers to the guide rollers 29. The support rollers 31 and guide rollers 29 are not directly opposite. The distance between the support rollers 31 with each other in this example is less than the distance between the guide rollers 29 with each other.

The invention is not limited by the illustrated embodiment, but it is within the scope of the appended claims modifiable.

It is also conceivable that instead of the holding element 25 or additionally a centering means, for example a bore, is provided with a corresponding pin.

By a suitable material combination of guide elements 8 and bushings 27, 28 or rollers 29, 30, 31 is a particularly quiet and easy mobility of the leg rest fitting 1 is possible. This can also contribute to the surface quality of the guide elements 8.

The rods as guide elements 8 may also have other cross-sectional shapes, with the cooperating bushings and rollers are adapted accordingly.

The rollers 29, 30, 31 may be formed with rolling and / or plain bearings. It is also possible that the rollers 29, 30, 31 are made of a plastic, the together with a bolt on which the rollers 29, 30, 31 are mounted, forms a suitable friction pairing as a plain bearing.

LIST OF REFERENCE NUMBERS

1

Leg support fitting

2

displacement unit

3

swivel unit

4

Furniture

5

leg rest

6

seat part

7

fastener

8th

guide element

9

cover

10

carriage

11

First joint element

12

Second joint element

13

driving section

14

bracket

15

inner space

16

First joint axis

17

Second hinge axle

18

Third hinge axle

19

Fourth joint axis

20

drive axle

21

Power storage element

22

Stripper plate

23

In stock

24

mounting axis

25

retaining element

26

guide rail

27

Rifle

28

guide bush

29

leadership

30

counter-roller

31

idlers

101

hinge section

102

guide section

103

stop section

104

supporting member

Claims (16)

Leg rest fitting (1) for the reversible adjustment of a leg support (5) of a piece of furniture (4) from a rest position into a position of use with a displacement unit (2) and a pivot unit (3) with two hinge elements (11, 12), characterized in that a first Joint element (11) of the two hinge elements (11, 12) of a second hinge element (12) of the two hinge elements (11, 12) is substantially completely surrounded. Leg rest fitting (1) according to claim 1, characterized in that the joint elements (11, 12) are articulated with one end to the displacement unit (2) via a carriage (10) in each case a hinge axis (16, 17) and with a each other end with the leg rest (5) in each case a hinge axis (18, 19) are articulated coupled. Leg rest fitting (1) according to claim 2, characterized in that the second joint element (11) with at least one of the carriage (10) arranged force storage element (21) is cooperatively connected. Leg rest fitting (1) according to claim 3, characterized in that the second joint element (11) is connected to the at least one energy storage element (21) via a drive section (13) which has an extension of the second joint element (11) via the associated joint axis (16 ). Leg rest fitting (1) according to one of claims 2 to 4, characterized in that the carriage (10) with two guide elements (8) of the displacement unit (2) is arranged slidably connected. Leg rest fitting (1) according to claim 5, characterized in that the two guide elements (8) of the displacement unit (2) are arranged parallel to each other at a small distance, for example 8 to 10 cm. Leg rest fitting (1) according to claim 5 or 6, characterized in that the guide elements (8) as guide rails (26) are formed, in which the carriage (10) by means of support elements (104), such as rollers or sliders, is guided displaceably. Leg rest fitting (1) according to claim 5 or 6, characterized in that the guide elements (8) are designed as rods and / or tubes, on which the carriage (10) by means of bushes (27, 28) is displaceably guided. Leg rest fitting (1) according to claim 5 or 6, characterized in that the guide elements (8) are designed as rods and / or tubes, on which the carriage (10) by means of rollers (29, 30, 31) is displaceably guided. Leg rest fitting (1) according to claim 9, characterized in that in each case a guide element (8) between two guide rollers (29) and at least one counter-roller (30, 31) is arranged. Leg rest fitting (1) according to claim 10, characterized in that the at least one counter-roller (30, 31) for changing a distance between it and the guide rollers (29) is formed with a suitable attachment, for example eccentric attachment. Leg rest fitting (1) according to one of claims 7 to 11, characterized in that on the carriage (10) between this and the guide elements (8) adjustable sliding elements are arranged, which can be brought into cooperation with the guide elements (8). Leg rest fitting (1) according to one of claims 2 to 12, characterized in that the carriage (10) has a stop section (103) with a holding element (25) for cooperation with a fastening element (7) for holding and / or centered holding in the position of use having. Leg rest fitting (1) according to one of the preceding claims, characterized in that the displacement unit (2) has a holding-down device (22) which cooperates in the rest position with an outer side of the second joint element (12). Leg rest fitting (1) according to one of the preceding claims, characterized in that the second joint element (12) is tubular. Leg rest fitting (1) according to one of the preceding claims, characterized in that the leg rest fitting (1) is provided for a central attachment below a seat part (6) of a piece of furniture (4).

Images