WO2003087512A1

WO2003087512A1 - Hinge with rotation damper having variable damping effect

Info

Publication number: WO2003087512A1
Application number: PCT/AT2002/000367
Authority: WO
Inventors: Fredi Dubach; Klaus Brüstle; Helmut Fitz
Original assignee: Julius Blum Gesellschaft M.B.H.
Priority date: 2002-04-16
Filing date: 2002-12-23
Publication date: 2003-10-23
Also published as: DE20221066U1; AU2002361380A1; DE20205905U1; BR0210423A

Abstract

The invention relates to a hinge that comprises a hinge arm (17) to be fastened to a furniture part and a hinge cup (20) to be inserted in a bore of a furniture door, which are hinged to each other. The hinge is provided with a rotation damper (1) that comprises a housing (11) filled with a damping fluid. Said rotation damper (1) decelerates the pivoting motion between the hinge arm (17) and the hinge cup (20). The rotation damper (1) has a rotating piston (2) with a vane (4) that delimits, with the housing wall (6), a gap (12) having a variable width for the passage of the damping fluid. Advantageously, the rotating piston (2) is limited to a maximum angle of rotation of 360 DEG , preferably a maximum angle of 180 DEG .

Description

HINGE WITH VARIABLE DAMPING EFFECT

The invention relates to a hinge with a hinge arm to be fastened to a piece of furniture and a hinge cup to be inserted into a bore in a furniture door, said hinge cup being connected to one another in an articulated manner, at least one rotary damper being provided with a housing filled with a damping fluid, which pivots the pivoting movement between the Hinge arm and the hinge cup brakes.

Furthermore, the invention relates to a hinge for furniture parts with two stop parts which are pivotally connected to one another via at least two articulated levers, at least one rotation damper being provided with a housing filled with a damping fluid, which dampens the pivoting movement between the two stop parts.

The object of the invention is to provide hinges of this type with a very effective rotary damper. The damping effect should advantageously increase or decrease during the damping to a predetermined extent.

The object of the invention is achieved in that the rotary damper has a rotary piston with at least one wing, which delimits a gap of variable width for the passage of the damping fluid with the housing wall, and / or in that the angle of rotation of the rotary piston is at most 360 °, preferably at most 180 ° is limited.

Another object of the invention is to improve the rotary damper in such a way that an improved damping effect is achieved with easy return of the rotary piston.

This object of the invention is achieved in that at least one valve part designed as an elongated wing with two ends is provided on the rotary piston of the rotary damper, which is hinged at one end to the rotary piston and limits the gap with the housing wall at the other end. An advantageous embodiment of the invention provides that the rotary damper is mounted on an axis that connects one of the stop parts with an articulated lever of the hinge.

Further advantageous exemplary embodiments of the invention provide that two rotation dampers are provided, which support on one axis of the hinge, or that at least two rotation dampers are provided, which support on different axes of the hinge.

It is advantageously provided that the wing of the rotary damper delimits a gap with the housing wall in both directions of rotation of the rotary piston.

It is also advantageously provided that the length of the wing is greater than the distance from the tilt axis of the wing to the axis of rotation of the rotary piston.

An embodiment of the invention provides that the wing has two, at least approximately parallel, flat sides, the width of the wing being less than half the length of the wing. The width of the wing is advantageously less than a third of the length of the wing.

Another exemplary embodiment of the invention provides that at least one rotation damper dampens when the hinge is closed and at least one further rotation damper when it opens.

The rotary damper according to the invention is particularly suitable for damping the movement of hinges. But it can also be used to dampen the movement of a drawer.

Various exemplary embodiments of the invention are described below with reference to the figures of the accompanying drawings. Show it:

1 shows a diagram of a hinge according to the invention;

2 shows a plan view of a hinge according to the invention; 3 shows a diagram of a further exemplary embodiment of a hinge according to the invention;

FIG. 4 shows a top view of a hinge according to FIG. 3;

5 shows a diagram of a further exemplary embodiment of a hinge according to the invention;

FIG. 6 shows a top view of a hinge according to FIG. 5;

7 shows a diagram of a further exemplary embodiment of a hinge according to the invention;

8 shows a diagram of a further exemplary embodiment of a hinge;

FFiigg .. 99 is a side view of a hinge according to FIG. 8;

10 shows a hinge with a rotary damper according to the invention, the rotary damper being cut and shown in the return position in which the hinge is opened; 11 to 14 show a hinge in various stages of the closing movement, the damper being shown in section;

15 to 19 are longitudinal sections through a hinge, the hinge being shown in corresponding angular positions to FIGS. 10 to 14; 20 shows a side view of a further exemplary embodiment of a hinge according to the invention when opening; F Fiigg .. 2 200aa the section A of Fig. 20;

Fig. 21 is a side view of the hinge according to the invention in the

Open position;

FIG. 21a shows section B of FIG. 21;

22 shows a side view of a hinge according to the invention during the closing movement;

22a shows the detail C of FIG. 22;

23 shows a side view of a hinge according to the invention in the closed position; FIG. 23 shows section D from FIG. 23; 24 to 27 are side views of a further exemplary embodiment of a hinge according to the invention, the hinge being shown in corresponding angular positions to FIGS. 10 to 14; 24a to 27a show sections through a damper arranged on the hinge according to FIGS. 24 to 27, the damper being shown in corresponding angular positions to FIGS. 20a to 23a;

28 to 30 schematically held sections through an exemplary embodiment of a rotary damper according to the invention in different damping positions;

31 shows a section through an inventive rotary damper according to FIGS. 28 to 30 in the return position;

32 to 34 sections through a further exemplary embodiment of a rotary damper according to the invention in different damping positions;

35 shows a section through an inventive rotary damper according to FIGS. 32 to 34 in the return position;

Fig. 36 is an exploded diagram of an inventive

Rotary damper; 37 shows a section through a further exemplary embodiment of a

Rotary damper;

38 is a side view of a drawer with a drawer slide set with an integrated rotary damper; and

Fig. 39 is a section through a furniture part with a rotary damper according to the invention, which is acted upon by a plunger.

The hinge according to the invention according to the embodiments of FIGS. 1 to 6 and 10 to 27 in a conventional manner has a hinge arm 17 which is articulated to a hinge cup 20 via an outer articulated lever 18 and an inner articulated lever 19. The articulated levers 18, 19 are supported on axes 21 in the hinge arm 17 and on axes 22 in the hinge cup 20. However, the hinge according to the invention can also be designed as a single-axis hinge, as shown in FIG. 7, in particular as a frame hinge and also as a wide-angle hinge with several articulated levers, as shown in Figs. 8 and 9. Instead of the hinge cup 20, a second stop part in the form of a hinge arm can also be provided. Such a construction is used in particular for wide-angle hinges and glass hinges. In the exemplary embodiment according to FIGS. 1 and 2, a rotary damper 1 according to the invention is mounted on the two sides of the hinge arm 17, which are mounted on the hinge axis, which connects the hinge arm 17 to the inner articulated lever (not visible in this figure).

In the exemplary embodiment according to FIGS. 3 and 4, the rotary damper 1 is mounted on the hinge axis, which connects the hinge cup 20 to the outer articulated lever 18 of the hinge.

In the exemplary embodiment according to FIGS. 5 and 6, a rotary damper 1 is mounted on the axle, which connects the hinge cup 20 to the outer articulated lever 18, and a rotary damper 1 on the axle, which connects the hinge arm 17 to the inner articulated lever.

7 shows a single-axis hinge and a so-called frame hinge, the hinge arm 17 not being mounted directly on a side wall of the furniture but on a frame. Two rotary dampers 1 are mounted on the axis that connects the hinge cup 20 to the hinge arm 17. Two closing springs 13 are mounted on the hinge cup and move the hinge cup 20 into the final closed position when the door is closed. This movement is damped by the rotary damper 1.

8 and 9 show a so-called wide-angle hinge, i.e. a hinge that has an opening angle of approximately 180 °. In this case, the rotary damper 1 is again mounted on the axis that connects the hinge cup 20 to the inner articulated lever 19. As in the exemplary embodiment shown, a rotary damper 1 is preferably mounted on the outside on each side of the hinge cup 20.

10 to 14 show side views of an embodiment of a hinge according to the invention in different closed and open positions and FIGS. 15 to 19 show corresponding longitudinal sections. In this exemplary embodiment, the inner articulated lever 19 has a toothed rack segment 23 which meshes with the head of the axis 3, which is designed as a pinion 27, of a rotary damper 1. Advantageously, the inner articulated lever 19 has a rack segment 23 on each side of the hinge arm 17, which is connected to a pinion 27 of the axis 3 Rotation damper 1 combs. However, a continuous axis can also be provided, which projects into both housings 11 of the rotary damper 1.

20 to 23 show the hinge of FIGS. 3 and 4 also in different open positions and FIGS. 20a to 23a again show the corresponding position of the rotary piston 2.

24 to 27, the hinge of FIGS. 1 and 2 is shown in different open positions when opening (FIG. 24) and when closing (FIGS. 25 to 27). 24a to 27a show the respective position of the rotary piston in the rotary damper 1.

The rotary damper 1 according to the invention consists of a housing 11 with a housing chamber 10 which is filled with a damping fluid, for example a silicone oil. In the housing chamber 10 there is a rotary piston 2. The rotary piston consists of a rotor part 2 'and at least one wing 4 mounted on the rotor part 2'. In the exemplary embodiment according to FIGS. 1 to 4, the rotor part 2 'of the rotary piston 2 carries a wing 4. The wing 4 is pivotally mounted on the rotor part 2 'by means of an articulated connection. The wing 4 has a convex bearing head 9 which is mounted in a socket formed on the rotor part 2 '. The rotor part 2 'of the rotary piston 2 is provided with stops 7 and 8 which limit the tilt angle of the wing 4.

The length I of the wing 4 is greater than the distance r from the tilt axis K of the wing 4 to the axis of rotation D of the rotor part 2 'or of the rotary piston 2. The wing 4 has two mutually parallel flat sides 4' and the width b of the wing 4 is less than a third of the length I of the wing 4.

28 and 29, the rotary piston 2 is shown at the beginning of the damping movement. The wing 4 lies against the stop 7. During the damping movement, the rotary piston 2 is rotated counterclockwise, the damping fluid being pressed through the gap 12 between the tip 5 of the wing 4 and the housing wall 6. The wing 4 is supported by the stop 7 of the rotor part 2 'so that it projects radially from the rotor part 2'. The housing wall 6 is curved concavely, the curvature extending such that the gap 12 between the tip 5 of the wing 4 and the housing wall 6 is wider at the beginning of the damping movement than at the end of the damping movement, the gap 12 always remaining in the exemplary embodiment shown ,

The width of the gap 12 is advantageously constant over a first section of the damping movement, in order then to decrease continuously in a second section of the damping movement until the end of the damping movement.

The housing wall 6 is provided with a depression 13 in the end region of the damping section.

In the return movement shown in FIG. 31, the rotary piston 2 is rotated clockwise. Due to the resistance of the damping fluid, the wing 4 is pivoted backwards, as a result of which the gap 12 between the tip 5 of the wing 4 and the housing wall 6 increases to such an extent that the rotary piston 2 or the wing 4 is only very small due to the fluid Resistance is opposed. The rotary damper 1 practically moves freely.

The tilting movement of the wing 4 is limited to the rear by the stop 8 on the rotor part 2 '. The position of the wing 4 during the return movement is such that it lies at an angle to the diameter of an imaginary circle, the center of which is on the axis of rotation of the rotary piston 2.

The housing 11 has step-shaped stop surfaces on the inside, against which the rotary piston 2 with the wing 4 and the rotor part 2 ′ rest in the two end positions.

In the exemplary embodiment according to FIGS. 32 to 36, the rotary piston 2 is equipped with two diametrically opposed vanes 4 and the housing 11 has two sector-shaped chamber sections 10 ', in each of which a vane 4 is received. The function of the rotary damper 1 is the same as that of the rotary damper 1 according to FIGS. 28 to 31, only that the damping resistance is approximately doubled due to the presence of two vanes 4.

Again, the vanes 4 are supported by the stops 7 during the damping movement in such a way that they protrude radially from the rotor part 2 'of the rotary piston 2, while during the return movement, the vanes 4, as can be seen in FIG. 35, are tilted backwards, as a result of which increase the distances between the tips 5 of the vanes 4 and the housing wall 6 in such a way that the damping fluid offers little resistance to the movement of the rotary piston 2.

The housing 11 in turn has step-shaped stop faces which limit the rotary movement of the rotary piston 2.

36, the rotary damper 1 according to the invention is shown diagrammatically and pulled apart. It consists of the housing 11, the rotary piston 2, consisting of the rotor part 2 'and the vanes 4, an axis 3 for the rotary piston 2 and a cover 14. The axis 3 is provided with a driver device for an actuating part. The driver device can be formed by a non-circular recess at the head of the axis 3 for receiving a driver pin. Likewise, the head of the axis 3, as shown below, can be designed as a pinion 27. The axis 3 can also be designed directly as a hinge axis. An annular seal 24 is provided between the rotary piston 2, the axis 3 and the housing 11.

36, the step-shaped stop surfaces of the housing 11 are designated by the reference symbols 16, 16 '.

In the exemplary embodiment according to FIG. 38, the rotary damper 1 according to the invention is integrated in a pull-out guide for a drawer.

A housing block 26 in which the rotary damper 1 according to the invention is located is fixed on the pull-out rail 25 of the pull-out guide assembly. A pinion 27 is supported on the rotor part 2 'of the rotary damper 1 or this pinion 27 is formed directly on the rotor part 2'. A carriage 28 is mounted on the housing block 26 so that it can be moved horizontally. The carriage 28 is provided with a rack profile 29 which meshes with the pinion 27. A tension spring 30 is attached to the carriage 28 on the one hand and to the housing block 26 on the other hand.

The carriage 28 also has a carriage stop 31 which projects through a slot in the pull-out rail 25. A body-side stop 33 for the slide 28 is formed on the mounting rail 32.

If the drawer is opened, the tension spring 30 pulls the slide 28 into the damping position. If the drawer is now closed, the slide stop 31 strikes the body-side stop 33, after which there is no further relative movement between the slide 28 and the body rail 32. However, the pull-out rail 25 is moved further back together with the housing block 26, and as a result the pinion 27 which rolls on the rack profile 29 is rotated. As a result, the rotary damper 1 located in the housing block 26 comes into action by rotating the rotary piston 2 of the rotary damper 1.

If the drawer is opened, the slide 28 is returned to the starting position by the tension spring 30, i.e. brought into the damping position.

In the exemplary embodiment according to FIG. 39, the rotary damper 1 according to the invention is inserted directly into a fixed furniture part 34, for example a furniture wall or a furniture floor. A plunger 35 is mounted in the furniture part 34. The plunger 35 has a toothed rack profile 36 which meshes with the pinion 27 of the rotary damper 1. If a movable furniture part 38, for example a door or the front panel of a drawer, is opened, a spring 37 presses the plunger 35 into the ready position shown in FIG. 39. When the movable furniture part 36 closes, it pushes the plunger 35 into the furniture part 34 and thereby rotates the pinion 27 and thus the rotary piston 2 of the rotary damper 1. The damping fluid can be a liquid, for example a silicone oil. However, it is conceivable to use a pasty substance, a powdery medium or a gas, for example air, as the damping fluid.

37 shows a simple exemplary embodiment of a rotary damper 1 according to the invention, the wing 4 being rigidly formed on the rotary piston 2. The damping effect in this rotary damper 1 is the same as in the previously described exemplary embodiments, but the rotary damper 1 must additionally be equipped with a freewheel in order to facilitate the return to the ready position.

The effect of the rotary damper 1 is best used when a closing and / or opening device is provided for the furniture part to be moved. The rotary damper 1 then dampens the movement caused by the closing and / or opening device. The closing and / or opening device is advantageously integrated into the hinge and is formed, for example, by one or two springs 13.

Claims

claims:

1. Hinge with a hinge arm to be attached to a piece of furniture and a hinge cup to be inserted into a bore in a furniture door, which are hingedly connected to one another, at least one rotary damper being provided with a housing filled with a damping fluid, which pivots the pivoting movement between the hinge arm and the hinge cup Brakes, characterized in that the rotary damper (1) has a rotary piston (2) with at least one wing (4), which with the housing wall (6) has a gap (12) with a variable width for the passage of the

Bounding damping fluid, and / or that the angle of rotation of the rotary piston (2) is limited to a maximum of 360 °, preferably a maximum of 180 °.

2. Hinge for furniture parts with two stop parts which are pivotally connected to one another via at least two articulated levers, at least one

Rotary damper is provided with a housing filled with a damping fluid, which dampens the pivoting movement between the two stop parts, in particular according to claim 1, characterized in that the rotary damper (1) has a rotary piston (2) with at least one wing (4) which with the housing wall (6) a gap

(12) with a variable width for the passage of the damping fluid, and / or that the angle of rotation of the rotary piston (2) is limited to a maximum of 360 °, preferably a maximum of 180 °.

3. Hinge according to claim 1 or 2, characterized in that the wing (4) is designed as an elongated wing with two ends, which is hinged at one end to a rotor part (2 ') of the rotary piston (2) and with the other End (5) delimits the gap (12).

4. Hinge according to one of claims 1 to 3, characterized in that the gap (12), which the wing (4) with the housing wall (6) limits, narrows in one direction of rotation of the rotary piston (2) and in the opposite direction Damping direction of the rotary piston (2) expanded.

5. Hinge according to claim 3 or 4, characterized in that the wing (4) in both directions of rotation of the rotary piston (2) with the housing wall (6) delimits a gap (12).

6. Hinge according to one of claims 3 to 5, characterized in that the length (I) of the wing (4) is greater than the distance (r) from the tilt axis (K) of the wing (4) to the axis of rotation (D) of the Rotary piston (2).

7. Hinge according to one of claims 3 to 6, characterized in that the wing (4) two, at least approximately aligned parallel to each other

Has flat sides (4 '), the width (b) of the wing (4) being less than half the length (I) of the wing (4).

8. Hinge according to claim 7, characterized in that the width (b) of the wing (4) is less than a third of the length (I) of the wing (4).

9. Hinge according to one of claims 3 to 8, characterized in that the wing (4) at the tiltably mounted end has a convex bearing head (9) with which it is formed in a pan on the rotary part (2 ") of the rotary piston (2) is stored.

10. Hinge according to one of claims 3 to 9, characterized in that on the rotary part (2 ') of the rotary piston (2) a projection (7) is formed, on which the wing (4) abuts during the damping movement.

11. Hinge according to one of claims 3 to 10, characterized in that the rotary part (2 ') of the rotary piston (2) is provided with two projections (7, 8) which are arranged on both sides of the wing (4).

12. Hinge according to one of claims 3 to 11, characterized in that the rotary piston (2) is provided with two diametrically opposite wings (4).

13. Hinge according to one of claims 1 to 12, characterized in that the rotary damper (1) is mounted on an axis (21, 22) of the hinge.

14. Hinge according to claim 13, characterized in that the rotary damper (1) is mounted on an axis (21, 22) which connects one of the stop parts (17, 20) with an articulated lever (18, 19).

15. Hinge according to claim 14, characterized in that the rotary damper (1) is mounted on an axis (21) which connects the hinge arm (17) to an articulated lever (18, 19).

16. Hinge according to claim 14, characterized in that the rotary damper (1) is mounted on an axis (22) which connects the hinge cup (20) to an articulated lever (18, 19).

17. Hinge according to one of claims 13 to 16, characterized in that two rotary dampers (1) are provided which on an axis (21, 22) of the

Store hinge.

18. Hinge according to one of claims 13 to 16, characterized in that at least two rotary dampers (1) are provided, which are mounted on different axes (21, 22) of the hinge.

19. Hinge according to claim 16, characterized in that at least one rotary damper (1) on the axis (22) supports (n) which connects the hinge cup (20) with the outer articulated lever (18).

20. Hinge according to claim 16, characterized in that at least one rotary damper (1) on the axis (21) supports (n) which connects the hinge arm (17) with the inner articulated lever (19).

21. Hinge according to claim 17 or 18, characterized in that at least one rotation damper (1) dampens when closing the hinge and at least one further rotation damper (1) when opening.

22. Hinge according to one of claims 1 to 21, characterized in that at least one locking device is provided which the hinge in the Closed position moves, and that the rotary damper (2) this

Closing movement dampens.

23. Hinge according to one of claims 1 to 22, characterized in that at least one opening device is provided which moves the hinge into the open position and that the rotary damper (1) dampens this opening movement.

24. Hinge according to claim 22 and / or 23, characterized in that the closing and / or opening device is formed by at least one spring (13).

25. Rotary damper for furniture, in particular for a hinge according to one of claims 1 to 24, with a housing which is at least partially filled with a damping fluid, for example silicone oil, and a rotary piston arranged in the housing with at least one valve part which is pivotably articulated on the rotary piston and which delimits a gap with a variable width for the passage of the damping fluid with the housing wall, the gap being dimensioned wider in one direction of rotation of the rotary piston than in the opposite damping direction of the rotary piston, characterized in that the at least one valve part as an elongated wing (4th ) is formed with two ends, which is hinged at one end to a rotor part (2 ') of the rotary piston (2) and delimits the gap (12) with the other end (5).

26. Rotary damper according to claim 25, characterized in that the wing (4) in both directions of rotation of the rotary piston (2) with the housing wall (6) delimits a gap (12).

27. A rotary damper according to claim 25 or 26, characterized in that the length (I) of the wing (4) is greater than the distance (r) from the tilt axis (K) of the wing (4) to the axis of rotation (D) of the rotary piston ( 2).

28. Rotary damper according to one of claims 25 to 27, characterized in that the wing (4) two, at least approximately parallel has aligned flat sides (4 '), the width (b) of the

Wing (4) is less than half the length (I) of the wing (4).

29. A rotary damper according to claim 28, characterized in that the width (b) of the wing (4) is less than a third of the length (I) of the wing (4).

30. Rotary damper according to one of claims 25 to 29, characterized in that the wing (4) at the tiltably mounted end has a convex bearing head (9) with which it is formed in a socket on the rotor part (2 ') of the rotary piston (2) is stored.

31. Rotary damper according to one of claims 25 to 29, characterized in that a projection (7) is formed on the rotor part (2 ") of the rotary piston (2), on which the wing (4) bears during the damping movement.

32. Rotary damper according to one of claims 25 to 31, characterized in that the rotor part (2 ") of the rotary piston (2) is provided with two projections (7, 8) arranged on both sides of the wing (4).

33. Rotation damper according to one of claims 25 to 32, characterized in that the rotary piston (2) is provided with two diametrically opposite wings (4).

34. Rotation damper according to one of claims 25 to 33, characterized in that the angle of rotation of the rotary piston (2) is limited to a maximum of 360 °, preferably a maximum of 180 °.