EP2815050B1 - Furniture hinge - Google Patents

Description

The present invention relates to a furniture hinge having a hinge arm having a longitudinal axis, a hinge cup connected to the hinge arm pivotally supported relative to the hinge arm between a closed position and an open position, and a linear damper having a linear damper stroke for damping movement of the furniture hinge , wherein the linear damper is arranged on the hinge cup and together with this in installation position within a bore of a furniture part can be arranged.

Furthermore, the invention relates to a piece of furniture with a furniture body and with a movable furniture part, which is mounted pivotably relative to the furniture body via at least one furniture hinge of the type to be described.

The damping effect of a linear damper is based essentially on the flow resistance of a damping fluid present in a fluid chamber. Damping devices with a piston having a linear damping stroke typically have a path-dependent damping function, i. that the degree of damping depends on the available damping stroke of the piston. Thus, therefore, a sufficient Dämpfweg and a corresponding piston diameter are provided to achieve the desired smooth damping of a hinge movement. A particular challenge is therefore to arrange the linear damper as possible space-saving and inconspicuous on the hinge cup, but at the same time to dimension the piston diameter and the damping stroke for the purpose of optimal damping performance accordingly.

A furniture hinge according to the preamble of claim 1, with a hinge cup and a linear damper mounted thereon, which is housed together with the hinge cup within a circular standard furniture bore, for example, in the WO 2010/108203 A1 and in the WO 2008/104009 the applicant described. The or the linear damper are mounted on an outer wall of the hinge cup, the hinge cup - so that it can be taken together with the damper disposed thereon within the bore - must be made narrower compared to conventional hinge pots. For the Actuation of the damper, a hinge lever is provided, which connects the hinge cup with the hinge arm and which dips in the closing movement together with the hinge arm in the hinge cup. As a result of the necessary reduction of the hinge cup according to the prior art, the articulated lever or the associated hinge arm must therefore also have a smaller width, so that they can be pressed together into the hinge cup. Thus, the hinge cup, the hinge lever and the hinge arm of special designs (for example, with cranks) made, which is relatively complicated and expensive.

In the EP 1 931 850 B1 Furniture hinges are described with a linear damper, wherein the linear damping stroke is transverse to a longitudinal axis of the hinge arm. Since these linear damper and the hinge arm are not in the mounting position within the bore of the furniture part, the length of the linear damper can be made relatively large, so that there is always a sufficient damping stroke of the piston available.

In the WO 2010/108203 A1 a furniture hinge is described with a damping device which can be arranged within a hinge cup. The damping device has two fluid chambers with displaceably mounted pistons, wherein the direction of the linear damping stroke of the first piston runs approximately at right angles relative to the direction of the linear damping stroke of the second piston.

Object of the present invention is to propose a furniture hinge of the type mentioned, with existing standard forms of hinge parts (and thus existing production lines in the factory) can be used and also a reliable damping performance of the linear damper can be ensured.

This is achieved by the features of claim 1. Further advantageous embodiments of the invention are specified in the dependent subclaims.

According to the invention, it is thus provided that in the open position of the furniture hinge in a plan view, the direction of the linear damping stroke of the linear damper extends at an acute angle relative to the longitudinal axis of the hinge arm, wherein said acute angle is between 3 ° and 20 °.

Due to the arrangement of a linear damper whose linear damping stroke in an open position of the hinge in a plan view with a longitudinal axis of the hinge arm includes an acute angle that portion of the hinge cup, in which the hinge lever and / or the hinge arm dips in the closing movement of the furniture hinge - broadened so that also standard components of the furniture hinge (in particular the hinge cup, the hinge arm connecting the hinge cup with the hinge cup and the hinge arm) can be used. In addition, the overall length and thus the damping stroke can be increased by the inclination of the linear damper.

The linear damper may include at least one fluid chamber having a plunger and / or piston received therein, the high pressure side of the fluid chamber (ie, that end portion of the fluid chamber including the bottom of the fluid chamber) facing the hinge arm while the other end portion of the fluid chamber is facing the hinge arm Low-pressure side (ie, that region of the fluid chamber from which the plunger protrudes to apply force to the damper) facing away from the hinge arm.

According to an embodiment of the invention, it may be provided that said acute angle - which is enclosed between the longitudinal axis of the hinge arm and the direction of the linear damping stroke of the linear damper - is between 5 ° and 10 °.

According to a preferred embodiment, the maximum damping stroke and the piston diameter may each be between 4 mm and 6 mm.

The hinge cup may have a mounting flange for abutment with a furniture part, wherein the linear damper is at least partially arranged on the outside of the hinge cup and in the installed position below the mounting flange. The direction of the linear damping stroke of the linear damper in this case preferably runs parallel to the voltage applied to the furniture part contact surface of the mounting flange.

Fig. 1

ein schrankförmiges Möbel mit einer schwenkbar angelenkten Türe in einer perspektivischen Ansicht,

Fig. 2a, 2b

das Möbelscharnier in zwei verschiedenen perspektivischen Ansichten von oben,

Fig. 3a, 3b

das Möbelscharnier in einer Draufsicht sowie eine vergrößerte Detaildarstellung hierzu,

Fig. 4a, 4b

das in der Offenstellung befindliche Möbelscharnier in einer perspektivischen Darstellung sowie eine vergrößerte Detailansicht hierzu,

Fig. 5a, 5b

das in der Schließstellung befindliche Möbelscharnier in einer perspektivischen Darstellung sowie eine vergrößerte Detailansicht hierzu,

Fig. 6a-6c

der Lineardämpfer in einer perspektivischen Ansicht sowie zwei Detaildarstellungen mit einer Winkelausgleichsvorrichtung,

Fig. 7a, 7b

ein weiteres Ausführungsbeispiel einer Winkelausgleichsvorrichtung in zwei verschiedenen Ansichten.

Further details and advantages of the present invention will be explained with reference to the embodiment shown in the figures. It shows or show:

Fig. 1

a cabinet-shaped piece of furniture with a pivotally hinged door in a perspective view,

Fig. 2a, 2b

the furniture hinge in two different perspective views from above,

Fig. 3a, 3b

the furniture hinge in a plan view and an enlarged detail illustration for this,

Fig. 4a, 4b

the furniture hinge located in the open position in a perspective view and an enlarged detail view of this,

Fig. 5a, 5b

the furniture hinge located in the closed position in a perspective view and an enlarged detail view of this,

Fig. 6a-6c

the linear damper in a perspective view and two detailed views with an angle compensation device,

Fig. 7a, 7b

a further embodiment of an angle compensation device in two different views.

Fig. 1 shows a furniture 1 in a perspective view, wherein a door 3 is mounted on furniture hinges 4 relative to a furniture body 2 pivotally. The furniture hinges 4 have in a known manner a hinge cup 5, which is articulated with a hinge arm 6 in combination. The hinge cup 6 is detachably latched in a known manner with a mounting plate 60 to be fastened to the furniture body 2 via a clip mechanism. The furniture hinges 4 each comprise at least one (not shown here) linear damper 7 for damping a hinge movement, the linear damper 7 is disposed on the outside of the hinge cup 5 and in the installed position below the mounting flange 8 of the hinge cup 5, wherein the hinge cup 5 together with at least one arranged thereon linear damper 7 together within a designated - Preferably cylindrical - bore of the door 3 can be arranged and arranged within an imaginary bore diameter of the bore.

Fig. 2a and Fig. 2b show the furniture hinge 4 in two different perspective views. The hinge cup 5 is connected via at least one articulated lever 9 pivotally connected to the hinge arm 6. The articulated lever 9 is connected to the hinge arm 6 via a hinge axis 10, wherein at the end of the closing movement of the furniture hinge 4, the hinge axis 10 is immersed in the inner cavity of the hinge cup 5 and wherein the dipping hinge lever 9 acts on a movably mounted actuator 11 for driving a linear damper 7. In the illustrated embodiment, the actuating element 11 is rotatably mounted within the hinge cup 5 about an axis 12, wherein the actuating element 11 is preferably pivotable by at least 90 °. However, the actuating element 11 can also be mounted linearly displaceable. The hinge cup 5 has a fastening flange 8 for engagement with the door 3 (FIG. Fig. 1 ), wherein the housing 13 of the linear damper 7 is at least partially arranged on the outside of the hinge cup 5 and in the installed position below the mounting flange 8. For variable adjustment of the damping effect or for the complete deactivation of the damping function of the linear damper 7, a switch 30 to be actuated by a person is provided.

Fig. 3a shows the furniture hinge 4 in a plan view, wherein for reasons of clarity, the hinge cup 5 and the mounting flange 8 are shown broken. The hinge cup 5 is connected to the hinge arm 6 via at least one articulated lever 9, wherein the hinge lever 9 applied towards the end of the closing movement of the furniture hinge 4 about the axis 12 rotatably mounted actuating element 11, wherein the movement of the actuating element 11 via a transmission mechanism 14 (FIG. FIG. 4b ) is transferable to the linear damper 7. Laterally on the hinge cup 5 and under the mounting flange 8, the housing 13 of the linear damper 7 is mounted. The hinge arm 6 has an imaginary longitudinal axis X, the linear damping stroke Y of the linear damper 7 extends at an acute angle relative to the longitudinal axis X of the hinge arm. 6 Fig. 3b shows the in Fig. 3a circled area in an enlarged view. As can be seen from this figure, the angle α, which is between the longitudinal axis X of the Hinge arm 6 and the linear damping stroke Y of the linear damper 7 is included, between 3 ° and 20 ° (preferably between 5 ° and 10 °).

Fig. 4a shows the furniture hinge 4 located in the open position, wherein the housing 13 of the linear damper 7 is shown broken. Fig. 4b shows the in Fig. 4a circled area in an enlarged view. The actuating element 11 to be acted upon by the articulated lever 9 is rotatably mounted about an axis 12 within the hinge cup 5. A movement of the actuating element 11 is transferable via a transmission mechanism 14 to a plunger 16 of the linear damper 7. In the embodiment shown, the transmission mechanism 14 comprises a rotatably mounted lever 15 which is coupled for movement with the actuating element 11. The plunger 16 is mounted linearly displaceable in a housing 13 formed in the fluid chamber 17. With the fluid chamber 17 is a compensation chamber 19 in fluid communication, in which a deformable - preferably in rest position bag-shaped - compensation body 20 is mounted to compensate for a change in volume due to the plunger 16 immersed in the fluid chamber 17. By means of a return spring 18 arranged in the fluid chamber 17, the plunger 16 and the actuating element 11 coupled thereto can be restored to a standby position provided for the next damping stroke after the damping stroke has been completed.

Fig. 5a shows the furniture hinge 4 located in the closed position in a perspective view. Fig. 5b shows the in Fig. 5a circled area in an enlarged view, wherein the housing 13 of the linear damper 7 is shown broken. The pivotally mounted lever 15 is moved in a movement of the actuating element 11, wherein the free end of the lever 21 of the lever 15 acts on the plunger 16 and pushes it into the fluid chamber 17. The volume of the plunger 16 immersed in the fluid chamber 17 is compensated by a deformation of the compensation body 20 located in the compensation chamber 19. By the return spring 18, the plunger 16 can be moved back again, being reset by this provision, the actuating element 11 via the rotatable lever 15 in the starting position. By the reference numeral 22, an overload protection is characterized, which has a spring-loaded ball in the illustrated embodiment. By the overload protection 22 is above a threshold value of Pressurization on the plunger 16 at least one overload opening between the fluid chamber 17 and the compensation chamber 19 apparently, so that in case of overload, the damping fluid in the fluid chamber 17 can flow through the overload opening into the compensation chamber 19.

Fig. 6a shows the linear damper 7 with the associated actuator 11 in a perspective view. The actuating element 11 is rotatably connected to the rotatably mounted lever 15, wherein the free end of the lever 21 of the lever 15 loosely rests on the plunger 16 of the linear damper 7. Fig. 6b shows an enlarged detail of the Fig. 6a , During the closing movement of the furniture hinge 4, the actuating element 11 is rotated, whereby the lever 15 is twisted and the plunger 16 is pressed by the free end of the lever 21 of the lever 15 in the fluid chamber 17 of the housing 13.

Fig. 6c shows the rotatable lever 15 in a perspective view, wherein the free end of the lever 21 cooperates with the end face of the plunger 16 via an angle compensation device 23. This angle compensation device 23 serves to compensate for the inclination of the linear damper 7, so that the plunger 16 is applied in a straight line. In the exemplary embodiment shown, the surface of the free lever end 21 provided for contact with the plunger 16 has an inclined surface 24, which forms an acute angle β to the joint axis 12 when it comes into contact with the plunger 16. This acute angle β preferably corresponds to the acute angle α, which is enclosed between the longitudinal axis X of the hinge arm 6 and the direction of the linear damping stroke Y of the linear damper 7 ( FIG. 3b ).

Fig. 7a shows a further possible embodiment of an angle compensation device 23, through which the plunger 16 of the linear damper 7 is acted upon substantially in a straight line. In the illustrated figure, the hinge axis 12 has a form-locking contour 26 which deviates from a cylindrical lateral surface and which engages in a recess 25 of the rotatable lever 15. The recess 25 of the lever 15 has a corresponding, inclined inner contour 28, wherein the guide surfaces of the inner contour 28 extend obliquely relative to the side surface 27 of the lever 15. Due to the inclination of the lever 15 relative to the hinge axis 12, the plunger 16 of the linear damper 7 can be acted upon in the axial direction.

Fig. 7b shows the embodiment according to Fig. 7a in a perspective view, wherein the lever 15 is rotatably connected to the arranged in the hinge cup 5 actuator 11 via the interlocking contour 26 and wherein the side surface 27 of the lever 15 is inclined relative to the straight side web 29 of the actuating element 11. The angle compensation device 23 may alternatively also have a ball joint or a universal joint.

It should be noted that the linear damper 7 can also be used for the damping of an opening movement up to the open end position of the furniture hinge 4. If necessary, it is also possible to use a plurality of linear dampers 7 for damping a hinge movement, wherein an additional linear damper 7 is mirror-inverted to that in FIG Fig. 3a drawn longitudinal axis X of the hinge arm 6 can be arranged on the opposite side wall of the hinge cup 5.

Claims (14)

1. A furniture hinge (4) comprising a hinge arm (6) having a longitudinal axis (X), a hinge cup (5) which is connected to the hinge arm (6) and which is pivotally mounted relative to the hinge arm (6) between a closed position and an open position, and a linear damper (7) having a linear damping stroke (Y) for damping a movement of the furniture hinge (4), wherein the linear damper (7) is arranged at the hinge cup (5) and can be jointly arranged therewith within a bore in a furniture part (3) when mounted, characterized in that in the open position of the furniture hinge (4), in a plan view, the direction of the linear damping stroke (Y) of the linear damper (7) extends at an acute angle (α) relative to the longitudinal axis (X) of the hinge arm (6), the acute angle (α) being between 3° and 20°.
2. The furniture hinge according to claim 1, characterized in that the acute angle (α) is between 5° and 10°.
3. The furniture hinge according to claim 1 or 2, characterized in that the hinge cup (5) has a fixing flange (8) for bearing against a furniture part (3), wherein the linear damper (7) is arranged at least partially externally on the hinge cup (5) and, in the installed position, beneath the fixing flange (8).
4. The furniture hinge according to one of the claims 1 to 3, characterized in that the hinge cup (5) is connected to the hinge arm (6) by way of at least one hinged lever (9), wherein the hinged lever (9) immerses into the hinge cup (5) in the closing movement of the furniture hinge (4).
5. The furniture hinge according to claim 4, characterized in that arranged in or on the hinge cup (5) is a moveably, preferably pivotally, mounted actuating element (11) for driving the linear damper (7), wherein the hinged lever (9) acts on the actuating element (11) in the closing movement of the furniture hinge (4).
6. The furniture hinge according to claim 5, characterized in that the actuating element (11) is pivotally mounted about an axis member (12) within the hinge cup (5), wherein in a plan view, that region of the hinge cup (5) into which the hinged lever (9) immerses in the closing movement is widened in relation to that region of the hinge cup (5) at which the axis member (12) of the actuating element (11) is arranged.
7. The furniture fitting according to claim 5 or 6, characterized in that the actuating element (11) is motionally coupled to the linear damper (7) by way of a transmission mechanism (14).
8. The furniture hinge according to claim 7, characterized in that the transmission mechanism (14) has at least one pivotally mounted lever (15) motionally coupled to the actuating element (11), wherein a displaceably mounted ram (16) of the linear damper (7) can be acted upon by the pivotally mounted lever (15).
9. The furniture hinge according to claim 8, characterized in that the pivotally mounted lever (15) cooperates with the ram (16) of the linear damper (7) by way of an angle compensating device (23), wherein the ram (16) of the linear damper (7) can be acted upon substantially in a straight line by the angle compensating device (23).
10. The furniture hinge according to claim 9, characterized in that the angle compensating device (23) includes an inclined surface (24) operative between the pivotally mounted lever (15) and the ram (16).
11. The furniture hinge according to claim 9, characterized in that the angle compensating device (23) has an opening (25) arranged on the pivotable lever (15) and having an inclined internal contour (28), into which engages a positively locking contour (26) of the pivot axis member (12), said contour (26) differing from that of a cylindrical peripheral surface.
12. The furniture hinge according to one of the claim 1 to 11, characterized in that the linear damper (7) has a housing (13) with a fluid chamber (17) formed therein, wherein at least one ram (16) is displaceably mounted in the fluid chamber (17), wherein a relative movement between the fluid chamber (17) and the ram (16) occurs in the damping stroke of the linear damper (7).
13. The furniture hinge according to claim 12, characterized in that the linear damper (7) has a return spring (18) which is preferably mounted in the fluid chamber (17), and by which the ram (16), after a damping stroke has been effected, can be returned again to a ready position for the next damping stroke.
14. An article of furniture comprising a furniture carcass and a moveable furniture part which is mounted pivotably relative to the furniture carcass by way of at least one furniture hinge according to one of the claims 1 to 13.

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