EP2165626B1 - Mounting for swinging pieces of furniture - Google Patents

Description

The present invention relates to a fitting for pivoting furniture parts, in particular of seating, with a base fixed to a frame part on which a pivot member is mounted, wherein rotation of the pivot member relative to the base member also causes a displacement of the pivot member and the pivot member is rotatably mounted on a displaceable guide element. An advantage of such an arrangement is that when adjusting the otherwise resulting folds of the cover are smoothed by the change in length produced by the displacement of the furniture part.

The DE 20 2007 015 886 discloses a Verschiebeschwenkbeschlag in which a hinge member and a sliding unit are provided to make a rotation of the hinge element also a certain displacement. For this purpose, a drive lever is provided as part of a transmission unit which is arranged at a right angle to a hinge axis. As a result, the sliding pivot fitting requires considerable space and is constructed comparatively complicated.

The DE 20 2008 001 323 discloses a pivot fitting in which a pivot member is mounted on a support member, wherein in addition by a rotational movement of the pivot member and a sliding movement is initiated. A power transmission takes place via a crank gear, which protrudes on one side of the support member.

The DE 20 2005 019 766 discloses a device for extending a pivotable part of a piece of furniture, in which a pivotable portion is coupled to a linearly guided drive slide, in order to also displace the pivotable portion during a rotational movement. For this purpose, a lever mechanism is provided which protrudes from the pivotable part and the sliding unit and is fixed to the furniture part. The fitting therefore builds large and is expensive to manufacture and assembly.

The US 200310075965 discloses a footrest assembly for seating furniture in which the footrest is movable between a retracted position and an extended position. In this case, a telescopic frame for extending and retracting the footrest and a Betatigungsmechanik is provided for pivoting the footrest. The actuating mechanism comprises a scissors gear arranged at a distance from the footrest.

It is therefore an object of the present invention to provide a fitting for pivoting furniture parts, which is simple and compact and allows effective displacement of the pivoting part in a rotary motion.

This object is achieved with a fitting with the features of claim 1.

The fitting comprises a rotatably mounted on a guide member pivoting part, wherein the guide element is mounted displaceably on a base part. According to the invention, the pivoting part is coupled to the base part via at least one scissors gear. As a result, the mechanical loads occurring during rotation of the pivoting part for simultaneous displacement of the guide element relative to the base part are removed via the scissors gear, which is designed to be comparatively compact. The arrangement of a scissors gear relatively short lever can be used, since two mutually coupled levers are used for power transmission.

According to a preferred embodiment of the invention, each scissors gear has at least two levers which are hinged to one another in a central region rotatably. In this case, at least one rotary joint of the scissors gear can be guided linearly on the guide element, so that an exact coordination of sliding and rotational movement takes place in the swivel part. For a compact design can the scissors gear case be set at the end of the base part or an associated component.

Thus, the guide element can absorb higher forces in a linear displacement, it is preferably performed with a linear guide rail over rolling elements. Depending on the loads occurring then the rail and the rolling elements can be dimensioned accordingly.

According to a further embodiment, the guide element is designed as a lever with a slot in which a sliding element coupled to the scissors gear is guided. This ensures a smooth running of the swivel part. In this case, the pivoting part can also be latched in a desired position, in particular a narrowing (or several constrictions) can be formed on the slot at which or the elastic sliding element in one (or more) predetermined position (s) is locked. Then the forces for pivoting the pivoting part at the latched positions may be greater than at the pivoting areas with a smooth-running guide.

As an advantageous alternative to the latching mechanism described above in the slot can be mounted on the scissors gear, a locking element by means of which the pivoting part can be latched in one or more positions by the latching element snaps into hollows on the sides of the guide element. The locking element can be retrofitted to the scissors gear, so that the locking function is also retrofitted. In addition, the locking forces can be tailored to the particular application. It has also been found that this embodiment of the locking function over the detent in the slot is longer lasting, the wear of the locking mechanism then has no effect on the quality of the longitudinal guide in the slot.

The pivoting part is preferably rotatably mounted on an end portion of the guide element, wherein the axis of rotation of the pivoting part spaced from a coupling of the scissors gear is arranged. This can be effected by a suitable choice of the point of coupling of the scissors gear a corresponding sliding movement whose length depends on the coupling and the other components of the scissors gear is. In this case, several points can be provided for coupling to the pivoting part, so that an adjustment of the ratio of sliding path relative to the rotational movement of the pivoting part can be made.

Preferably, the scissors gear on a drive lever which is coupled to the pivot member, wherein the drive lever is rotatably and longitudinally displaceable in the longitudinal direction of the guide element on the guide member mounted in a slot. The drive lever can be rotatably mounted on the guide element with a further lever of the scissors gear, so that the transmission of forces is divided at this point on two levers of the scissors gear. For a particularly compact design of the drive lever may have an angled shape, so that one end of the drive lever is disposed adjacent to the axis of rotation of the pivot member and protrudes the opposite end of the guide member.

Figur 1

eine perspektivische Ansicht eines Ausführungsbeispieles des erfindungsgemäßen Beschlages;

Figur 2

eine Seitenansicht des Beschlages der Figur 1;

Figur 3

eine Draufsicht des Beschlages der Figur 1;

Figur 4

eine perspektivische Ansicht des Beschlages der Figur 1 ohne Scherengetriebe und in teilweise demontiertem Zustand

Figuren 5A bis 5E

mehrere Ansichten des Beschlags der Figur 1 von links in verschiedenen Winkelstellungen,

Figuren 6A bis 6E

mehrere Ansichten des Beschlages der Figur 1 von rechts in unter schiedlichen Winkelstellungen;

Figuren 7A bis 7E

mehrere Ansichten eines weiteren Ausführungsbeispiels eines Beschlages mit einem Rastelement;

Figuren 8A bis 8D

mehrere Ansichten eines dritten Ausführungsbeispiels eines Beschlages mit modifiziertem Rastelement;

Figuren 9A bis 9E

mehrere Ansichten eines vierten Ausführungsbeispiels eines Beschlages mit modifiziertem Rastelement, und

Figuren 10A bis 10E

mehrere Ansichten eines fünften Ausführungsbeispiels eines Beschlages mit modifiziertem Rastelement.

The invention will be explained in more detail using an exemplary embodiment with reference to the accompanying drawings. Show it:

FIG. 1

a perspective view of an embodiment of the fitting according to the invention;

FIG. 2

a side view of the fitting of FIG. 1 ;

FIG. 3

a plan view of the fitting of FIG. 1 ;

FIG. 4

a perspective view of the fitting of FIG. 1 without scissor gear and in partially disassembled condition

FIGS. 5A to 5E

several views of the fitting of the FIG. 1 from the left in different angular positions,

FIGS. 6A to 6E

several views of the fitting of the FIG. 1 from the right in different angular positions;

FIGS. 7A to 7E

several views of another embodiment of a fitting with a locking element;

FIGS. 8A to 8D

several views of a third embodiment of a fitting with modified locking element;

FIGS. 9A to 9E

several views of a fourth embodiment of a fitting with modified locking element, and

FIGS. 10A to 10E

several views of a fifth embodiment of a fitting with modified locking element.

A fitting 1 for pivoting furniture parts, especially in armchairs for pivoting a headrest or footrest, but also a backrest comprises a base part 2 which can be fixed to a frame of the furniture. On the base part 2, a pivot member 3 is mounted, wherein the pivot member 3 is rotatably mounted on a linearly displaceable guide member 4. Between the guide element 4 and the base part 2, a linear guide rail 5 is provided. During a rotational movement of the pivoting part 3 relative to the guide element 4, a displacement of the guide element 4 takes place at the same time relative to the base part 2 via a scissors fitting 6.

On the pivoting part 3, an angle section 7 can be mounted, which is connectable to a movable furniture part such as a headrest or footrest.

The scissors gear 6 comprises an axis 13 which is arranged on a sliding element 8. The sliding member 8 is guided in a slot 9 in the guide member 4 rotatable and displaceable. The pivoting part 3, however, is held rotatably about a fixed axis 10 on the guide element 4. Preferably, a catch fitting is used for this rotatable mounting, as he, for example, in DE20112976U1 is described.

In order to effect a sliding movement between the guide element 4 and the base part 2 during a rotational movement of the pivoting part 3 about the guide element 4, the pivoting part 3 is fixedly connected to a lever 30 on which a coupling 11 for the scissors gear 6 is formed. The coupling 11 is rotatably connected to a first end of the drive lever 12, wherein the drive lever 12 is rotatably mounted about the axis 13 on the sliding member 8. The sliding member 8 is slidably mounted in the slot 9. On the axis 13, a lever 14 is also rotatably mounted. To form a scissors gear 6, the drive lever 12 with its coupling 11 facing away from the second end with a lever 15 and the lever 14 is analogously connected to a lever 16 articulated. The levers 15 and 16 are rotatably mounted in a central region about an axis 17. The end of the lever 15 is rotatably connected to a lever 19 and the lever 16 with a lever 18. The individual pivot points can be formed by bolts, rivets, etc. The lever 18 and the lever 19 are rotatably mounted at the end of the base part 2.

In FIG. 4 the fitting 1 is shown without the scissors gear 6. The guide element 4 is coupled to a rail 20, which is guided via rolling elements in the rail 5, alternatively, a sliding guide is used. The rail 5 is firmly connected to the base part 2. In the illustration, the guide element 4 is connected only at one point to the rail 20 and pivoted relative to the actual final assembly position by 90 °. After assembly, the guide element 4 is fixed with further fastening means such as rivets, screws or welds on the rail 20 and thus mounted relative to the rail 5 collinearly displaceable.

In the Figures 5 and 6 the fitting 1 is shown by different sides in different angular positions. In a starting position ( FIG. 5A and 6A ), the pivoting part 3 is arranged at an angle of 90 ° to a longitudinal axis of the base part 2. In this position, the pivot member 3 is close to the base part 2. By turning the pivot member 3 about the axis 10 on the guide member 4, the scissors gear 6 is actuated via the drive lever 12. The individual levers of the scissors gear 6 are thereby also pivoted and thus cause a displacement of the guide element 4 away from the base part 2. The pivoting of the pivot part 3 can be done by more than 90 °, for example in the case of a foot or headrest. On the lever 30, a plurality of openings for forming a coupling 11 may be formed for the drive lever 12. As a result, the sliding path of the pivoting part 3 can be modified in relation to the rotational movement.

In a further embodiment, the slot 9 may have at least one constriction 22, so that when moving the sliding element 8 this can be locked after the constriction 22. As a result, the holding forces of the pivoting part 3 can be increased in a latched position.

Depending on the required ratio of longitudinal displacement to angle of rotation of the fitting more or less scissor elements can be used because each pair of scissors creates an additional contribution to the displacement. Thus, for example, could be carried out at low required displacement, a coupling of the base part 2 to the scissors in the hinge points 13 or 17, wherein the then unnecessary additional scissor elements omitted, with a larger displacement further scissor members would be added.

In the FIGS. 7 to 10 Further embodiments of a fitting are shown, wherein the components have the same reference numerals as in the first embodiment.

In FIGS. 7A to 7E a fitting with a pivoting part 3 and a guide element 4 is shown, on which a latching element 40 is mounted. The latching element 40 is U-shaped and comprises two resilient legs 41, each having a thickening 42 at its end. A central region of the latching element 40 is attached to a pin 44 which is fixed to a holding element 45. The Retaining element 45 is coupled to the scissors gear 6. As a result, the latching element 40 is displaced relative to the guide element 4 during a movement of the scissors gear 6. After mounting the locking element 40 ( Figures 7B and 7C ) on the side walls is / are in a predetermined position one or more detent recess (s) 43 is formed, into which the thickened end portion 42 of the leg 41 can engage ( FIGS. 7A and 7D ). The locking element 40 may be formed of metal and / or plastic, wherein the locking forces can be designed depending on the application.

In the FIGS. 8A to 8D is a further embodiment of a fitting shown in which a pivot member 3 is rotatably mounted about an axis 10 and is displaced during the rotational movement via a scissors gear 6. In order to lock the pivoting part 3 in a predetermined position, a locking element 50 is provided in the form of a spring of a bent wire having a central wound portion which is arranged about a hinge axis 13 of the scissors gear 6. The locking element 50 has two bent legs 51 which engage around a web of the guide element 4. When the pivoting part 3 is pivoted about the axis 10, the pivot point 13 shifts in the slot 9 of the guide element 4, whereby the locking element 50 is displaced along the guide member 4. As a result, slide the end legs 51 of the locking element 50 along the guide member 4. On the guide member 4 pairwise recesses 52 are formed on opposite sides, where the legs 51 of the locking element 50 can lock. This also allows the pivoting part 3 to be locked in one or more positions.

In the FIGS. 9A to 9E a further embodiment of a fitting is shown, in which the pivoting part 3 can be locked in a predetermined position. For this purpose, a latching element 60 can be subsequently mounted on the fitting, which comprises two pivoting jaws 61 and 62 connected in an articulated manner via an axis 63. On the pivoting jaw 61, a closure hook 66 is formed which can be latched to a projection 67 on the pivoting jaw 62. The pivoting jaws 61 and 62 have a receptacle for a pin 17 'of the scissors gear 6, so that according to the Figures 9A and 9B the locking element 60 can be mounted by enclosing the pin 17 'with the pivoting jaws 61 and 62.

On the pivoting jaw 61, a leg 64 is fixed and on the pivoting jaw 62, a leg 65 is fixed. The legs 64 and 65 are arranged in a closed position of the locking element on opposite side walls of the guide element 4. If the scissors gear 6 is moved by pivoting the pivoting part 3, the locking element 60 moves relative to the guide element 4, whereby the legs 64 and 65 are moved along the side walls. On the guide element 4, a detent recess 69 is formed at a predetermined position, in which a thickened end portion 68 of the legs 64 and 65 can be latched.

In Figure 9E is the locking element 60 with the legs 64 and 65 spaced from the locking recesses 69 and thus can be moved along the guide member 4. In the FIGS. 9B and 9D is the locking element in the locked position. By forming a plurality of detent recesses 69 on the guide element 4, several detent positions can be realized.

In the FIGS. 10A to 10D a further embodiment of a fitting is shown in which a locking takes place in a predetermined angular position of the pivoting part 3. For this purpose, a locking element 70 is provided, which is designed as a resilient wire bow, which is fixed to the guide element 4. For this purpose, recesses 71 are formed on the guide element 4 on side walls, through which the latching element 70 is performed. Further, two openings 72 are formed in a central region of the guide element, in each of which an end portion of the locking member 70 formed as a wire clip is inserted. The mounted position of the locking element 70 is in FIGS. 10B and 10D shown. The latching element 70 comprises a bow-shaped portion 73, which is arranged adjacent to the hinge axis 13 of the scissors gear 6. The hinge axis 13 may also be surrounded by a disc or another component which cooperates with the latching element 70.

By doing Figures 10B and 10D the fitting is shown in a latched position, wherein the bracket 73 abuts a disc about the hinge axis 13. If the pivoting part 3 is pivoted about the axis 10, the scissors gear 6 moves and the hinge axis 13 is displaced in the slot 9. As a result, the bracket 73 of the locking element 70 is pushed upwards and unlocked. In Figure 10E shown an unlocked position, wherein the axis 13 has been displaced relative to the Rastelelement 70. By an opposite pivotal movement of the pivoting part 3, the axis 13 can be latched to the bracket 73 again.

The locking elements 40, 50, 60 and 70 may be made of metal and / or plastic, as needed, wherein the locking forces are adapted to the particular application. It can also be provided several locking positions for different angular positions of the pivot member 3.

Claims (14)

1. Fitting (1) for pivoting furniture parts, in particular pieces of seating furniture, having a base part (2), which can be secured on a framework and on which a pivoting part (3) is mounted via a guide element (4), wherein rotation of the pivoting part (3) relative to the base part (2) also gives rise to displacement of the pivoting part (3), and the pivoting part (3) is mounted in a rotatable manner on the displaceable guide element (4), wherein the pivoting part (3) is coupled to the base part (2) via at least one scissor-gear mechanism (6), wherein the scissor-gear mechanism (6) has a drive part (12), which is coupled to the pivoting part (3) and is mounted on the guide element (4) such that it can be rotated and displaced linearly in a slot (9), characterized in that the drive part (12) of the scissor-gear mechanism (6) is a drive lever (12), wherein the pivoting part (3) is fixed to a lever (30), wherein the lever (30) has formed on it a coupling means (11), which is connected in a rotatable manner to a first end of the drive lever (12) of the scissor-gear mechanism (6).
2. Fitting according to Claim 1, characterized in that each scissor-gear mechanism (6) has at least two levers (15, 16), which are articulated on one another such that they can be rotated in a central region.
3. Fitting according to Claim 1 or 2, characterized in that at least one rotary articulation (13) of the scissor-gear mechanism (6) is guided linearly on the guide element (4).
4. Fitting according to one of Claims 1 to 3, characterized in that the scissor-gear mechanism (6) is secured at the end of the base part (2) or a component connected thereto.
5. Fitting according to one of Claims 1 to 4, characterized in that the displaceable guide element (4) is mounted on the base part (2) by way of a linear guide.
6. Fitting according to one of Claims 1 to 5, characterized in that the displaceable guide element (4) is guided on at least one rail (5) via a rolling-contact-body or sliding guide.
7. Fitting according to one of Claims 1 to 6, characterized in that the guide element (4) is designed in the form of a lever with a slot (9), in which is guided a sliding element (8) which is coupled to the scissor-gear mechanism (6).
8. Fitting according to one of Claims 1 to 7, characterized in that the pivoting part (3) can be latched in at least one position.
9. Fitting according to Claim 8, characterized in that a latching element (40, 50, 60, 70) for latching the pivoting part (3) is mounted on the scissor-gear mechanism (6).
10. Fitting according to one of Claims 1 to 9, characterized in that the pivoting part (3) is mounted in a rotatable manner on an end portion of the guide element (4) and the axis of rotation (10) of the pivoting part (3) is spaced apart from a coupling means (11) of the scissor-gear mechanism (6).
11. Fitting according to one of Claims 1 to 10, characterized in that a latching fitting is provided for mounting the pivoting part (3) in a rotatable and latchable manner on the guide part (4).
12. Fitting according to one of Claims 1 to 11, characterized in that the drive lever (12) is mounted on the guide element (4) such that it can be rotated and displaced together with a further lever (14) of the scissor-gear mechanism (6).
13. Fitting according to one of Claims 1 to 12, characterized in that the pivoting part (3) has a plurality of coupling points (11) for the articulation of the drive lever (12).
14. Fitting according to one of Claims 1 to 13, characterized in that the drive lever (12) is of angled form.

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