EP3623559B1 - Lid fitting for swingable mounting of a lid to a furniture unit - Google Patents

Description

The invention relates to a cover fitting for pivotably attaching a cover to a furniture body with the features of the preamble of claim 1.

Such a cover fitting is from the DE 88 00 293 U1 known, which shows a fitting for a furniture body with an opening that can be closed by a door. The door is connected to the furniture body via the fitting. The fitting has a body support plate and a door support plate. These two bearing plates are connected in an approximately parallelogram-like manner by means of two angled levers hinged to them next to one another. The body support plate is attached to the furniture body. The door bearing plate has a recess into which an adjusting plate is suspended with a free edge. This is connected to the door in an adjustable manner by means of an eccentric. The connection between the door bearing plate and the adjustment plate is secured by a locking member.

Another cover fitting is from the EP 2 354 404 A2 known. The front connection element can be connected to a cover-side connection element there without tools via a latching connection. The height position, the lateral position and the inclination of the cover element in relation to the furniture body can be set using several adjusting screws on the front connection element.

DE 20 2013 101 958 U1 shows a holding arrangement for a cabinet with a body and a folding lid movably articulated on this, the folding lid having an upper lid element and a lower lid element which are pivotably connected to one another. The holding arrangement has an arm which can be pivotably articulated on the body and on the lower cover element. It is an adjustment device provided with a fastener and an eccentric. The fastening element can be fixed to the body or to the lower cover element and the eccentric is fastened to the fastening element such that it can rotate about an axis, the arm being connected to the eccentric so as to be pivotable about a pivot axis arranged parallel to the axis.

WO 03/097973 A1 shows a cover plate for a cabinet with an actuating arm which is fastened pivotably between an open position and a closed position on a cabinet body and on a cover. Furthermore, a control arm of the cover plate is attached to the cabinet body and to the cover in a pivotable manner. In order to adjust the cover in parallel or to be able to swivel it over the cabinet body, the cover being held in any position, actuating means in a body-side housing of the cover plate apply force to the actuating arm over at least part of its pivoting path to assume the open position is dimensioned so large that the lid is held in any position.

The object of the present invention is to provide a compactly constructed cover fitting with which the inclination of the front connection element relative to the base element can be adjusted with simple means.

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

Here, the eccentric can be arranged in two different ways on the base element and on the first pivot arm. In a first embodiment, the bearing axis forms the first body axis, so that the eccentric is mounted rotatably about the first body axis on the base element and the first pivot arm is rotatably mounted about the eccentric axis on the eccentric. When the cover fitting is moved from a closed position, which corresponds to that position of the cover fitting in which the cover element closes the furniture body, the first pivot arm and the eccentric pivot or rotate together about the first body axis. To adjust the inclination of the front connection element relative to the base element and thus, in the assembled state of the cover fitting on the furniture body, of the cover element relative to the furniture body, the eccentric can be rotated about the eccentric axis relative to the first swivel arm. The first swivel arm is connected to the eccentric in such a way that a greater torque has to be applied to rotate the eccentric relative to the first swivel arm than to rotate the eccentric relative to the base element. This ensures that when the cover fitting is moved normally between the closed position and the open position, the eccentric is rotated relative to the base element and not the first pivot arm relative to the eccentric. By rotating the eccentric relative to the first swivel arm about the eccentric axis, the distance between the first body axis and the first cover axis is adjusted or varied, the position of the first body axis relative to the base element remaining unchanged. This means that by rotating the eccentric about the eccentric axis, the position of the first cover axis is also varied. This adjusts the inclination of the front connection element, since the distances between the second body axis and the second lid axis, between the first body axis and the second body axis and between the first lid axis and the second lid axis remain unchanged.

In a second embodiment, the eccentric axis forms the first body axis, so that the first swivel arm is rotatably mounted about the first body axis on the eccentric and the eccentric is rotatably mounted about the bearing axis on the base element. In this case, a greater torque is required for adjusting the eccentric about the bearing axis relative to the base element than for pivoting the first pivot arm about the eccentric axis relative to the eccentric. When adjusting the eccentric about the bearing axis, the distance between the first body axis and the first cover axis is not adjusted, as in the first exemplary embodiment, but rather the position of the first body axis relative to the base element. By adjusting the position of the first body axis without changing the distance between the first body axis and the first cover axis, the position of the first cover axis is also changed relative to the base element. As in the first exemplary embodiment, this leads to an adjustment of the inclination of the front connection element.

In one exemplary embodiment, the eccentric can have an outer circumferential surface with a circular cross-section, on which the first pivot arm is mounted pivotably about the eccentric axis with a receiving bore. The eccentric can with this Embodiment have a bearing pin with which the eccentric is pivotably mounted on the base element about the bearing axis.

The eccentric can be pressed into the receiving bore of the first pivot arm. Here, the eccentric can be pressed into the mounting hole by wobbling rivets.

In a view in the axial direction, in one embodiment, the first body axis, the second body axis, the first lid axis and the second lid axis can form a rectangle, with a first straight line through the first body axis and through the first lid axis and a second straight line through the second body axis and the second cover axis are arranged parallel to one another or enclose an acute angle. The angle between the first straight line and the second straight line is preferably 0 to 20 degrees.

It can also be provided here that the first straight line and a third straight line through the first cover axis and through the second cover axis enclose an angle which is between 45 and 135 degrees.

According to one embodiment, the distance between the first body axis and the first cover axis is many times longer than the distance between the first cover axis and the second cover axis.

The pressure element of the power drive can be guided axially on that pivot arm, for example in a housing of the pivot arm, against which the power drive is supported.

The pressure element can be a roller that is acted upon with force against the positioning contour.

Figur 1

eine Seitenansicht eines Deckelbeschlags an einem Möbelkorpus in einer ersten Justierstellung;

Figur 2

eine Seitenansicht des Deckelbeschlags gemäß Figur 1 in einer zweiten Justierstellung;

Figur 3

eine Seitenansicht des Deckelbeschlags gemäß Figur 1 in einer dritten Justierstellung;

Figur 4

eine perspektivische Ansicht des Deckelbeschlags gemäß Figur 1 in einer Offenstellung; und

Figur 5

eine vergrößerte Schnittdarstellung des Deckelbeschlags gemäß Figur 1 im Bereich des Exzenters.

A preferred exemplary embodiment is explained in more detail below with reference to the figures. Herein shows:

Figure 1

a side view of a cover fitting on a furniture body in a first adjustment position;

Figure 2

a side view of the cover fitting according to Figure 1 in a second adjustment position;

Figure 3

a side view of the cover fitting according to Figure 1 in a third adjustment position;

Figure 4

a perspective view of the cover fitting according to Figure 1 in an open position; and

Figure 5

an enlarged sectional view of the cover fitting according to FIG Figure 1 in the area of the eccentric.

The Figures 1 to 3 show a cover fitting 1 in each case in the closed position, three different adjustment positions being shown. The Figure 4 shows the same cover fitting in an open position. The Figures 1 to 4 are described together below.

The cover fitting 1 comprises a base element 2, a front connection element 3, a control arm as a first swivel arm 4 and an actuating arm as a second swivel arm 5. The base element 2 is attached to a side wall 7 of a furniture body 8. The front connection element 3 is fastened to an inside of a cover element 9 of the body 8. The cover element 9 is fastened to the furniture body 8 in a hinge-like manner exclusively via the cover fitting 1 or one or more further cover fittings according to the cover fitting 1 shown. This means that no further hinges or fittings are provided for the pivotable movement of the cover element 9 relative to the furniture body 8. The cover fitting 1 is designed as a four-bar linkage. This means that the first pivot arm 4 is fastened to the base element 2 so as to be pivotable about a first body axis K1 and to the front connection element 3 so that it can pivot about a first cover axis D1. Furthermore, the second pivot arm 5 is fastened to the base element 2 so as to be pivotable about a second body axis K2 and to the front connection element 3 so that it can pivot about a second cover axis D2.

In the axis view according to the Figures 1 to 3 the first body axis K1, the second body axis K2, the first cover axis D1 and the second cover axis D2 form a quadrilateral. The first body axis K1, the second body axis K2, the first cover axis D1 and the second cover axis D2 are arranged parallel to and spaced apart from one another.

Furthermore, the cover fitting 1 has an eccentric 6 which is rotated around a bearing axis L ( Figure 5 ) is rotatably mounted on the base element 2. The first pivot arm 4 is mounted on the eccentric 6 so that it can pivot about an eccentric axis E, the bearing axis L and the eccentric axis E being arranged parallel to and spaced apart from one another.

In the exemplary embodiment shown, the bearing axis L forms the first body axis K1, so that the eccentric 6 is rotatably mounted about the first body axis K1 on the base element 2 and the first pivot arm 4 is rotatably mounted about the eccentric axis E on the eccentric 6. When adjusting the cover fitting 1 from a closed position ( Figures 1 to 3 ), in which the cover element 9 closes an opening 10 of the furniture body 8, to an open position according to FIG Figure 4 , in which the cover element 9 does not close the opening 10, the first pivot arm 4 and the eccentric 6 pivot or rotate together about the first body axis K1 or the bearing axis L.

To adjust the inclination of the front connection element 3 with respect to the base element 2, and thus in the assembled state of the cover fitting 1 of the cover element 9 with respect to the furniture body 8, the eccentric 6 can be rotated about the eccentric axis E relative to the first pivot arm 4. The eccentric 6 has an outer circumferential surface 11 of circular cross-section, on which the first pivot arm 4 is pivotably mounted with a receiving bore 12. The eccentric 6 is pressed in the receiving bore 12 in such a way that a greater torque has to be applied to rotate the eccentric 6 relative to the first pivot arm 4 than to rotate the eccentric 6 relative to the base element 2.

The eccentric 6 is pivotably received in a bore 24 of the base element 2 and is riveted on a side of the base element facing away from the outer circumferential surface 11.

In view in the axial direction, as in the Figures 1 to 3 shown, the first carcass axis K1, the second carcass axis K2, the first lid axis D1 and the second lid axis D2 form a rectangle, wherein in the closed position of the lid fitting 1, a first straight line G1 through the first body axis K1 and through the first lid axis D1 and a second straight line G2 through the second body axis K2 and the second cover axis D2 are arranged approximately parallel to one another, enclosing an acute angle α to one another.

The angle between the first straight line G1 and a third straight line G3 through the first cover axis D1 and the second cover axis D2 enclose an angle β which is approximately 90 degrees.

Through this arrangement of the first body axis K1, the second body axis K2, the first cover axis D1 and the second cover axis D2 to one another, an effective adjustment of the front connection element 3 with regard to the inclination can be achieved by adjusting the eccentric axis E relative to the base element 2 slightly.

Figure 2 shows an adjustment position of the cover fitting 1, in which the cover element 9 is aligned parallel to the opening 10 and vertically. The cover element 9 has the same gap dimensions as the body 8 and is therefore optimally adjusted.

By turning the eccentric 6 counterclockwise, starting from the position according to Figure 2 in the position according to Figure 1 the position of the first cover axis D1 is changed relative to the bearing axis L and thus to the first body axis K1, the position of the first body axis K1 remaining unchanged. As a result, the distance between the first body axis K1 and the first lid axis D1 in Figure 1 compared to Figure 2 enlarged. By turning the eccentric 6 counterclockwise, the eccentric axis E is moved vertically upwards. Since the eccentric E rotates with respect to the base element 2 about the bearing axis L or the first body axis K1, the first pivot arm 4 and thus the first cover axis D1 are moved upwards. This movement leads to a pivoting of the front connection element 3 about the second cover axis D2 in the counterclockwise direction. The cover element 9 is thus further away from the body 8 at its vertically upper end moves, so that there is a larger gap between the cover element 9 and the body 8 at the upper end than at a lower end.

In the adjustment position according to Figure 3 became the eccentric 6, starting from Figure 2 , rotated clockwise so that the eccentric axis E was moved vertically downwards. The distance between the first body axis K1 and the first cover axis D1 is shortened compared to the distance in the adjustment position according to FIG Figure 2 . The vertically downward movement of the eccentric axis E also moves the first cover axis D1 downwards, so that the front connection element 3 is moved clockwise about the second cover axis D2. This results in a larger gap at the lower end than at the upper end between the cover element 9 and the body 8.

Figure 4 shows the cover fitting 1 in a perspective view. The second pivot arm 5 has a housing 13 in which a spring element in the form of a helical spring 14 is arranged, which on the one hand, near the second body axis K2, against an abutment 15 and, on the other hand, near the second cover axis D2, via a pressure element 16 against the Front connection element 3 is supported. Since the front connection element 3 is connected to the cover element 9, the front connection element 3 functions as an adjusting element for moving the cover element 9.

The pressure element 16 is subjected to force in the direction of the front connection element 3, the pressure element 16 having a roller 17 with which the pressure element 16 is supported against an adjusting contour 18 of the front connection element 3.

The adjusting contour 18 has a changing distance from the second cover axis D2 around the second cover axis D2 in the circumferential direction. The adjusting contour 18 is designed in such a way that a torque is generated by the pressure element 16 over the largest pivoting path of the cover element 9 or the front connection element 3, which the cover element 9 in the direction towards the in Figure 4 open position shown applied with force. In a region between an intermediate position, which is located between the open position and the closed position of the cover element 9, and the closed position, the adjusting contour 18 is designed in such a way that the cover element 9 towards the in the Figures 1 to 3 shown closed position is acted upon with force.

The helical spring 14 is clamped between the abutment 15 and the adjusting contour 18 on the front connection element 3. The bias of the helical spring 14, with which it is clamped, can be adjusted in order to adapt the cover fitting 1 to different cover weights. Depending on the weight of the cover element 9, the preload can be adjusted, that is, with a higher cover weight, the preload of the helical spring 14 is increased so that the roller 17 of the pressure element 16 is acted upon with a greater force against the adjusting contour 18, which causes the front connection element 3 to act greater torque acts in particular in the direction of the open position of the cover element 9. Correspondingly, a lower preload can be set if the weight of the cover element 9 is lower.

To adjust the preload of the helical spring 14, the abutment 15 can be displaced in the direction of force action of the helical spring 14. For this purpose, the abutment 15 has a rectangular cross section. The inside of the housing 13 of the second pivot arm 5 also has a rectangular cross section, over which the abutment 15 is guided so that it cannot rotate axially along the length of the housing 13.

To adjust the abutment 15, an adjusting element 19 with an external thread is provided which is screwed into a mating thread of the abutment 15. By turning the adjusting element 19, the abutment 15 is adjusted along the thread. The adjusting element 19 is mounted in the housing 13 in an axially immovable and rotatable manner. The adjusting element 19 has a gearwheel section 20 which is in toothing engagement with a toothing of a drive element 21. The drive element 21 is designed as a rotatable worm wheel. The drive element 21 is mounted in the housing 13 in an axially immovable and rotatable manner. By rotating the drive element 21, this rotates the adjusting element 19, whereby the abutment 15 is axially displaced.

List of reference symbols

1

Cover fitting

2

Base element

3

Front connection element

4th

first swivel arm / control arm

5

second swivel arm / actuator arm

6th

eccentric

7th

Side wall

8th

Body

9

Cover element

10

opening

11

Outer peripheral surface

12th

Mounting hole

13th

casing

14th

Coil spring

15th

Abutment

16

Printing element

17th

role

18th

Control contour

19th

Adjustment element

20th

Gear section

21

Drive element

22nd

Power drive

23

Journal

24

drilling

D1

first cover axis

D2

second cover axis

E.

Eccentric axis

G1

first straight

G2

second straight

G3

third straight

K1

first body axis

K2

second body axis

L.

Bearing axis

Claims (10)

1. Lid fitting (3) for pivotally attaching a lid to a furniture body (8), wherein the lid fitting (3) comprises:

   a base element (2) for fastening the lid fitting (1) to a side wall (7) of the furniture body (8),

   a front attachment element (3) for mounting a lid element (9) to the lid fitting (1),

   a first pivot arm (4) that is pivotally attached to the base element (2) about a first body axis (K1) and to the front attachment element (3) about a first lid axis (D1),

   a second pivot arm (5) that is pivotally attached to the base element (2) about a second body axis (K2) and to the front attachment element (3) about a second lid axis (D2),

   wherein the first body axis (K1), the second body axis (K2), the first lid axis (D1) and the second lid axis (D2) are arranged parallel to and spaced apart from each other, and

   an eccentric (6) that is pivotally attached to the base element (2) about a bearing axis (L),

   characterized in

   that the first pivot arm (4) is pivotally mounted on the eccentric (6) about an eccentric axis (E), the bearing axis (L) and the eccentric axis (E) being arranged parallel to and at a distance from one another,

   that the lid fitting (1) further comprises a power drive (22) for acting on the front attachment element (3) at least over a part of the pivot path of the front attachment element (3) between an open position and a closed position in the direction towards the open position,

   that the front attachment element (3) has an setting contour (18), and

   that the power drive (22) is supported on the one hand against one of the pivot arms (4, 5) and on the other hand by means of a pressure element (16) against the setting contour (18) of the front attachment element (3).
2. Lid fitting (1) according to claim 1,
   characterized in
   that the bearing axis (L) forms the first body axis (K1).
3. Lid fitting (1) according to one of claims 1 to 2,
   characterized in
   that the eccentric (6) has an outer circumferential surface (11) of circular cross-section, on which the first pivot arm (4) is mounted with a receiving bore (12) such that it can pivot about the eccentric axis (E).
4. Lid fitting (1) according to claim 3,
   characterized in
   that the eccentric (6) has a bearing journal (23) by means of which the eccentric (6) is mounted on the base element (2) such that it can pivot about the first body axis (K1).
5. Lid fitting (1) according to claim 4,
   characterized in
   that the eccentric (6) is pressed in the receiving bore (12) of the first pivot arm (4).
6. Lid fitting (1) according to one of claims 1 to 5,
   characterized in
   that the first body axis (K1), the second body axis (K2), the first lid axis (D1) and the second lid axis (D2) form a quadrilateral in a view in the axial direction, wherein, in a closed position of the front attachment element (3), a first straight line (G1) through the first body axis (K1) and through the first lid axis (D1) and a second straight line (G2) through the second body axis (K2) and the second lid axis (D2) are arranged parallel to one another or enclose an acute angle.
7. Lid fitting (1) according to claim 6,
   characterized in
   that the first straight line (G1) and a third straight line (G3) through the first lid axis (D1) and through the second lid axis (D2) enclose an angle which is between 45 and 135 degrees.
8. Lid fitting (1) according to one of claims 1 to 7,
   characterized in
   that the distance between the first body axis (K1) and the first lid axis (D1) is many times longer than the distance between the first lid axis (D1) and the second lid axis (D2).
9. Lid fitting (1) according to one of claims 1 to 8,
   characterized in
   that the pressure element (16) is guided axially in that pivot arm (4, 5) against which the power drive (22) is supported.
10. Lid fitting (1) according to one of claims 1 to 9,
    characterized in
    that the pressure element (16) has a roller (17) which is loaded with force against the setting contour (18).

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