EP3143229B1 - Hinge for furniture or domestic appliances - Google Patents

Description

The present invention relates to a hinge for furniture or household appliances, with a side part, on which a hinge part is pivotally mounted via two levers, wherein a damping device is provided which has a movable damping element, which is slidably mounted or rotatable for damping between guide elements and is movable on a closing movement of the hinge before reaching the closed position via a first actuating element, wherein a second actuating element is provided which moves the damping element in an opening movement of the hinge before reaching the maximum opening position for an opening damping.

The EP 2 265 787 discloses a hinge in which a damping device is provided on a hinge part. The damping device comprises a rotatable friction disc, which is rotated when closing the hinge via an actuating element and a slider. The rotation of the friction disc slows down the closing movement and provides damping. The problem with such a hinge is that during an opening movement, the load on the hinge part is comparatively high. Just by the multi-part construction of the hinge part with the damping device can cause damage to the hinge at a quick opening.

It is therefore an object of the present invention to provide a hinge in which handling is improved.

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

According to the invention, the hinge comprises a damping device, which ensures a closing damping during a closing movement of the hinge before reaching the closing position and, moreover, ensures an opening damping during an opening movement of the hinge before reaching the maximum opening position. For this purpose, a movable damping element is provided which is displaceable or rotatable via a first actuating element for the closing damping and is displaceable or rotatable via a second actuating element for an opening damping. The first and second actuating element can act directly on the slider or via the interposition of further components. This will handle the handling of Hinge improves, since the hinge is braked before reaching the maximum opening position on the damping device. The damping device can be used for both the opening and closing damping.

According to the invention, the first actuating element comprises two arms which engage around a first projection in a U-shaped manner, while the second actuating element has arms which engage around a second projection in a U-shape, wherein the projections and the actuating elements are located in different planes, such that the first actuating element acting only on the first projection and the second actuating element only on the second projection.

Preferably, the opening damping of the damping device is at least 10 °, preferably at least 20 ° before reaching the maximum opening position effective. The opening damping can be effective depending on the maximum opening angle of the hinge, so that the damping device can be flexibly adapted to different hinge types.

For a compact design with only a few components, the first and / or the second actuating element can be fixed to one of the levers of the hinge or be formed integrally with one of the levers. As a result, during a rotational movement of the lever, the movement can be used to effect a movement of the damping element.

The damping device can be effective at least 10 °, in particular more than 20 °, before the closed position. Further, the damping device may be ineffective in a middle region between a closing damping and an opening damping in both the opening and closing directions. Preferably, the damping device is ineffective at least in an angular range between 40 ° and 60 ° of the hinge part from the closed position. As a result, the damping device does not hinder an opening or closing movement in a medium angular range, which could be perceived as disturbing by the user.

For effective damping, the damping element may be formed on the hinge part as a rotatably mounted friction disk, so that a large friction surface is available. The surface of the friction surface can be increased by a profiling, for example, annular ribs or grooves. In this case, the damping element may have at least one control cam or cooperate with such a control cam, wherein at least one driver of a slider is in engagement with the control cam, which in turn is in engagement with the first and / or second actuating element. The actuating element thus acts first on the slide, which rotates the damping element via a driver and the control cam. It is also possible that the first and / or second actuating element directly acts on the damping element to provide damping. About the Interposition of a slider, however, the distribution of forces can be optimized by the first and / or second actuator to the damping element.

Preferably, the slider is displaced by means of the arms at least over a certain angular range of the hinge in order to generate the damping forces in the opening and closing direction.

Figur 1

eine perspektivische Ansicht eines Möbels mit zwei erfindungsgemäßen Scharnieren;

Figur 2

eine perspektivische Explosionsdarstellung der Dämpfungsvorrichtung des Scharniers der Figur 1;

Figur 3

eine geschnittene Ansicht des Scharnierteils mit der Dämpfungsvorrichtung in einer Schließposition;

Figur 4

eine geschnittene Seitenansicht des Scharnierteils mit der Dämpfungsvorrichtung in einer Öffnungsposition;

Figuren 5 und 6

zwei Ansichten eines Schiebers der Dämpfungsvorrichtung;

Figuren 7A bis 7C

mehrere Ansichten des Schiebers der Dämpfungsvorrichtung in unterschiedlichen Positionen;

Figur 8

ein Diagramm zur Öffnungs- und Schließdämpfung, und

Figur 9

ein Diagramm zur Dämpfungskraft in Abhängigkeit vom Öffnungswinkel.

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

FIG. 1

a perspective view of a piece of furniture with two hinges according to the invention;

FIG. 2

an exploded perspective view of the damping device of the hinge of FIG. 1 ;

FIG. 3

a sectional view of the hinge part with the damping device in a closed position;

FIG. 4

a sectional side view of the hinge part with the damping device in an open position;

FIGS. 5 and 6

two views of a slider of the damping device;

FIGS. 7A to 7C

a plurality of views of the slider of the damping device in different positions;

FIG. 8

a diagram for the opening and closing attenuation, and

FIG. 9

a diagram of the damping force as a function of the opening angle.

A piece of furniture 1 comprises a cabinet-shaped furniture body 2, on which a pivotable door 3 is provided. The door 3 is held by two hinges 4 pivotally mounted on a side wall of the furniture body 2.

Each hinge 4 comprises a side part 5, which is fixed via a mounting plate 6 on the side wall of the furniture body 2. On the side part 5, two levers 8, 9 are provided, which store a hinge part 7 pivotably via a four-joint connection. On the hinge part 7, the door 3 is held. Each hinge part 7 is cup-shaped and comprises a damping device 10.

In FIG. 2 the hinge part 7 with the damping device 10 is shown in detail. The hinge part 7 comprises a plate 70 on which two openings 71 for fixing screws are recessed in order to fix the door 3 to the hinge part 7. Further, a pot-shaped receptacle 72 is formed on the hinge part 7, at the bottom of an opening 73 is recessed, which provides access to the damping device 10. On the cup-shaped receptacle 72 openings 74 and 75 for receiving an axle for articulating the levers 8 and 9 are provided on the side walls.

In the FIG. 3 Damping device 10 shown comprises a cup-shaped housing 11 having at a bottom 12 a plurality of annular ribs 15, which may be coated with a fluid and in engagement with ribs or rings on the underside of a disc-shaped damping element 20. The housing 11 further comprises side walls 13 with projections 14 which can be latched to a holder 30 or the hinge part 7.

The holder 30 is fixed to the underside of the hinge part 7 and comprises two side walls 31, which are fixed on the outside of the cup-shaped receptacle 72. At a bottom 32 of the holder, a rectangular opening 33 is provided, which serves to guide a slider 40 which is guided within the opening 33. On the slider 40, a first projection 41 is provided, which protrudes through the opening 73 on the hinge part 7 upwards. Adjacent to the first projection 41, two second projections 44 are provided, which project from the plate-shaped slider 40 and are arranged both in the sliding direction and in a direction perpendicular to the sliding direction offset from the first projections 41.

The damping device comprises the disc-shaped damping element 20, which is guided between the holder 30 and the cup-shaped housing 11. The damping element 20 is rotatably arranged and has a control cam 21 in the form of a curved slot, which may be formed for example U- or S-shaped and with a driver 42 on the Slider 40 cooperates. The shape of the cam 21 may be modified to vary the magnitude of the damping force and the range of angles at which the damping force is to be generated.

In FIG. 3 the hinge part 7 of the hinge 4 is shown in a closed position. The levers 8 and 9 are arranged in the receptacle 72 of the hinge part 7, wherein the lever 8 are rotatably supported via an axis 80 and the lever 9 via an axis 90 on the side part 5. The lever 8 is rotatably supported via an axis 81 and the lever 9 via an axis 91 on the hinge part 7, so that a four-joint connection between the side part 5 and the hinge part 7 is provided. About the axis 80, a U-shaped spring 82 is arranged, one leg 84 abuts against the side part 5 and the other leg 83 abuts a projection 92 of the lever 9. When opening the hinge 4, the spring 82 is first compressed, so that the spring 82 holds the hinge 4 in a closed position.

On the lever 8, a rotary member 50 is disposed about the axis 81, which is rotatable about the axis 81 together with the lever 8. On the rotary member 50, a first actuating element 51 and a second actuating element 52 are provided. The actuating element 51 engages around the first projection 41 and the actuating element 52 engages around the second projection 44 on the slider 40 in a substantially U-shaped manner. Upon rotation of the lever 8 and the rotary member 50 from the closed position (FIG. Fig. 3 ), the slider 40 is displaced by the action of the first and second operating members 51 and 52 on the first and second projections 41 and 44. By moving the slider 40, the drivers 42 and 43 are moved on the underside of the slider 40 in the control cam 21 and thus ensures a rotation of the damping element 20, which dampens the movement of the hinge in the opening and closing directions. Upon rotation of the lever 8 and the rotary member 50 from the open position to the closed position, the slider 40 is also displaced by the action of the first and second operating members 51 and 52 on the first and second projections 41 and 44, but in the opposite direction. By tuning the shape and positions of the actuators 51 and 52, as well as the shape of the control cam 21 thus the damping range can be set in the opening and closing direction.

In FIG. 4 the hinge 4 is shown in an open position in which the hinge part 7 has been pivoted about 80 ° relative to the side part 5. Thereby the levers 8 and 9 have been rotated about the respective axes 80, 90, 81, 91, wherein in addition the rotary member 50 has been rotated about the axis 81. In a further opening movement of the slider 40 is now moved in the opening 33 of the holder 30 and thereby moves via the driver 42 and the control cam 21, the damping element 20. The damping element 20 rotates on the bottom of the housing 11, wherein between the damping element 20th and the bottom 12 provided ribs 15 are engaged and generate the necessary braking forces. The hinge 4 can thus also provide an opening damping, wherein before the maximum opening position, the slider 40 is moved to rotate the damping element 20 in order to slow down a movement before the maximum opening position.

In the FIGS. 7A to 7C the actuators 51 and 52 and the slider 40 are shown in different positions. The first actuating element 51 comprises two arms 55 and 56, which surround the projection 44 in a U-shape, while the second actuating element 52 has arms 53 and 54 which engage around the projection 41 in a U-shape. The projections 41 and 44 and the actuators 51 and 52 are in different planes, so that the first actuator 51 acts only on the projection 44 and the second actuator only on the projection 41.

In FIG. 7A the slider 40 is shown in the left position near the closed position. By an opening movement of the slider 40 is moved along the opening 33 by the arm 55 in a central position.

In FIG. 7B a center position is shown in which both actuators 51 and 52 are disengaged from the projections 41 and 44, so the rotary member 50 can be rotated without damping forces. This freewheel can extend over an angular range of 30 ° to 70 ° from the open position.

In FIG. 7C the slider 40 is located on the right side of the opening 33 and the hinge is near the maximum opening position. The arm 53 pushes against the projection 41 and thus can move the slider 40 for generating damping forces for an opening damping.

If the hinge 4 is now moved from the maximum opening position in the closing direction, the arm 54 presses on the projection 41, wherein the slider 40 is moved to a central position.

The contour of the actuators 51 and 52 and the projections 41 and 44 may be tuned so that in conjunction with the control cam 21 and the driver 42 damping occurs only in predetermined angular ranges when opening and closing the hinge 4. The damping device 10 ensures damping in both the opening and closing direction.

In the FIGS. 5 and 6 the slider 40 is shown in which two drivers 42 and 43 are provided on the underside, while at the top a first projection 41 and a second projection 44 are provided, which can engage with the actuators 51 and 52 in engagement. By the provision of two drivers 42 and 43, two cam guides may be provided on the damping element 20, wherein a first cam guide with the driver 42 and a second cam guide with the driver 43 is engaged. As a result, it is possible for the driver 42 to be effective in the closing direction in a first angular range and the driver 43 for damping in the opening direction in a second angular range. Instead of the two drivers 42 and 43, only one driver may be provided on the underside of the slider 40.

In addition, it is possible to increase the number of actuators 51 and 52. Also, the number, shape and position of the projections 41 and 44 on the slider 40 can be varied to achieve optimum damping forces.

In FIG. 8 the principle of the opening and closing direction is shown schematically. In the case of a hinge according to the invention, a closing damping takes place in a first angle range α between 0 ° and 25 °, for example also between 0 ° and 40 °, wherein the hinge part 7 is braked by the damping device 10 during a corresponding closing movement in this angular range. In the opening direction, the damping device is then moved back mechanically, whereby also the damping forces in the opening direction must be overcome. Furthermore, the hinge 4 has an opening damping, which is effective for example in an angular range between 100 ° and 120 °, when the hinge part 7 can be opened in a maximum opening position of 120 °. Then, the opening loss becomes effective in a range of at least 20 ° beforehand, so that an opening damping is effective before reaching the maximum opening position. During a closing movement then the damping device 10 is mechanically again reset, so that even with a closing movement in the angular range between 120 ° and 100 °, the damping forces must be overcome. In a middle region, for example, between 25 ° and 100 °, however, takes place substantially no attenuation. In this area, the user wants to get a smooth handling of the hinge 4, so that damping forces would only disturb. The areas in which no damping is effective, for example, between 40 ° and 60 °, or 30 ° and 75 °, can be selected depending on the hinge type and the maximum opening angle.

In FIG. 9 the damping force is shown over the opening angle. By appropriate design of the control cam 21, the driver 42 and 43, the projections 41, 44 and the actuators 51 and 52, the damping force can be varied depending on the opening angle. For example, should be obtained shortly before reaching the closed position in the closing damping, a particularly high damping force to avoid striking the door 3. However, the damping force should still be lower than the force of the spring 82 before reaching the closed position, so that a self-suit is guaranteed. The damping force can therefore be particularly high shortly before a closed position and then reduce to an angle of for example 35 °. In a central region of, for example, 35 ° to 65 ° substantially no damping takes place, so that a smooth pivoting of the hinge 4 is possible. When the hinge 4 is movable up to a maximum opening position of, for example, 90 °, the opening damping may begin at an angle of, for example, 65 ° to 70 ° and then generate a damping force. The damping force in the opening direction can be chosen slightly lower than in the closing direction, but also an equal or greater damping force can be used.

In the present embodiment, a rotary member 50 is provided about the axis 81. It is also possible to form the first and second operating members 51 and 52 integrally with the lever 8. In addition, it is possible to dispense with the slider 40 when the actuators 51 and 52 act directly on the damping element 20. Instead of the mechanism shown for transmitting the rotational movement from the lever 8 to the damping element 20, other mechanisms can be used to generate frictional forces in a damping device 10, which then damp the hinge 4 in a closing area and an opening area.

LIST OF REFERENCE NUMBERS

1

Furniture

2

furniture body

3

door

4

hinge

5

side panel

6

mounting plate

7

hinge part

8th

lever

9

lever

10

damping device

11

casing

12

ground

13

Side wall

14

head Start

15

ribs

20

damping element

21

cam

30

holder

31

Side wall

32

ground

33

opening

40

pusher

41

head Start

42

takeaway

43

takeaway

44

head Start

50

turned part

51

actuator

52

actuator

53

poor

54

poor

55

poor

56

poor

70

plate

71

opening

72

admission

73

opening

74

opening

75

opening

80

axis

81

axis

82

feather

83

leg

84

leg

90

axis

91

axis

92

head Start

α

angle range

Claims (9)

1. A hinge (4) for furniture or domestic appliances, having a side part (5), on which a hinge part (7) is mounted so it is pivotable via two levers (8, 9), wherein a damping device (10) is provided, which has a movable damping element (20), which is mounted so it is displaceable or pivotable between guide elements (11, 30) for damping and is movable via a first actuating element (51) during a closing movement of the hinge (4) before reaching the closed position, whereby a second actuating element (52) is provided, which moves the damping element (20) during an opening movement of the hinge (4) for opening damping before reaching the maximally open position, characterized in that first actuating element (51) has two arms (55, 56) which encompass a first protrusion (44) in a u-shaped manner, wherein the second actuating element (52) has arms (53, 54) which encompass a second protrusion (41) in a u-shaped manner, whereby the protrusions (41, 44) and the actuating elements (51, 52) are arranged in different planes, so that the first actuating element (51) only acts on the first protrusion (44) and the second actuating element (52) only acts on the second protrusion.
2. The hinge according to Claim 1, characterized in that the opening damping of the damping device (10) is active at least 10°, preferably at least 20°, before the maximally open position.
3. The hinge according to Claim 1 or 2, characterized in that the first and/or the second actuating element (51, 52) is fixed on one of the levers (8) or is integrally formed with one of the levers (8).
4. The hinge according to any one of the preceding claims, characterized in that the damping device (10) is active at least 10°, in particular more than 20° before the closed position.
5. The hinge according to any one of the preceding claims, characterized in that the damping device (10) is inactive in a middle opening range between closing damping and opening damping both in the opening direction and also in the closing direction.
6. The hinge according to Claim 5, characterized in that the damping device (10) is in active at least in an angle range between 40° and 60° of the hinge part (10) viewed from the closed position.
7. The hinge according to any one of the preceding claims, characterized in that the damping element (20) is designed as a disk which is mounted so it is rotatable on the hinge part (7).
8. The hinge according to any one of the preceding claims, characterized in that the damping element (20) has at least one control curve (21) which is engaged with at least one driver (42, 43) of a slide (40), which is in turn engaged with the first and/or second actuating element (51, 52).
9. The hinge according to claim 8, characterized in that the slide (4) is displaced by means of the arms (53, 54, 55, 56) at least over a specific angle range of the hinge (4).

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