DE102010061160B4 - Closing and damping device for movable furniture parts - Google Patents

Abstract

Closing and damping device (1) for movable furniture parts, in particular for sliding doors (15) that can be moved on a piece of furniture (12), comprising an energy storage device (6) attached to a housing (2, 3) with a first end (61), which tensioned during the opening process of a furniture part (15) and its stored force is used as a retraction aid in the final closed position during the closing process of the movable furniture part (15), - a damping device (7) and - a deflection device (5) with a gear (52), one with the toothed rack (51) meshing with the gear (52) and a holder (53) arranged in a rotationally fixed manner on the gear (52) and to which a second end (62) of the energy accumulator (6) can be attached, characterized in that - the deflection device ( 5) has a sequence curve that changes the distance between the articulation point of the energy storage device (6) on the gear wheel (52) and the pivot point (521) of the gear wheel (52) during an opening or closing process.

Description

The present invention relates to a closing and damping device for movable furniture parts, in particular for sliding doors that can be moved on a piece of furniture according to the preamble of claim 1.

Such closing and damping devices are known in numerous variants from the prior art, for example from DE10 2007 009 076 A1 . Such closing and damping devices are used in particular in sliding door furniture to automatically retract a sliding door into the closed position from a predetermined position.

Especially if a tension spring is used as a force storage device in such closing and damping devices, relatively high actuation forces are required due to the linear spring characteristic of the tension spring when opening the movable furniture part, for example the sliding door, in order to pretension the spring to a predetermined length.

In order to keep the force required when opening the sliding door as low as possible or to reduce the slope of the spring characteristic, conventional solutions use tension springs that are as long as possible and are deflected in a housing. Such a solution is, for example, from EP 1 640 540 A1 known. Alternatively, the installation of several cascaded tension and/or compression springs is also known.

From the US 2010/0229341 A1 is a generic closing and damping device with a tension spring attached to a housing of the device with a first end as a force storage known, the closing and damping device further having a deflection device with a gear, as well as a rack meshing with the gear and a rotationally fixed on the Gear arranged holder to which a second end of the tension spring is attached.

The object of the present invention is to provide a closing and damping device for movable furniture parts in which the force required for an opening process is even lower or in which the slope of the spring characteristic is reduced again.

This task is achieved with a closing and damping device for movable furniture parts with the features of claim 1.

The closing and damping device according to the invention has a force accumulator attached to a housing with a first end, in particular in the form of a tension spring, which is tensioned during the opening process of a movable furniture part and whose stored force is used during the closing process as a retraction aid into the final closed position for the movable furniture part . Furthermore, the closing and damping device has a damping device, in particular in the form of a pneumatic or hydraulic damping device or the like. The energy accumulator is coupled to a deflection device with a gear, a rack meshing with the gear and a holder arranged in a rotationally fixed manner on the gear with its second end. According to the invention, the deflection device has a sequence curve that changes the distance between the pivot point of the gear and the articulation point of the energy storage on the gear during an opening or closing process. If a movable furniture part, in particular a sliding door, is opened relative to the furniture, a driver presses against a rack, which drives the gear and thereby winds the energy storage device around this curve. Due to the shape of the flow curve, the effective lever arm of the articulation point of one force storage end on the gear changes. As a result, compared to conventional solutions, the force required for an opening process is lower and if a tension spring is used as a force storage device, the spring characteristic curve is flatter, in particular even horizontal or slightly falling.

Advantageous embodiment variants of the invention are the subject of the subclaims.

According to a preferred embodiment variant, the drain curve is provided on the holder and is designed in particular as a spiral-shaped support for the energy accumulator, the articulation point of the energy accumulator being at a maximum distance from the pivot point of the gear in a closed position of the support.

According to a further advantageous embodiment variant, the end of the energy accumulator attached to the holder is designed as a rope or straight piece of wire. In this way, easier storage of the energy accumulator on the holder can be achieved, since the length of the rope or straight piece of wire is ideally dimensioned such that only the rope or straight piece of wire is in contact with the holder.

According to a further advantageous embodiment of the closing and damping device according to the invention, the gear is elliptical and the rack in the plane perpendicular to the axis of rotation of the gear in an area in which it is in a closed position of the closing and Damping device meshes with the gear, wider than in an area in which the rack meshes with the gear in an opening position of the closing and damping device. Such a design of the gear or the rack causes the return torque of the energy accumulator to be greater in the closed position than in the open position of the gear. As with the winding technology itself, this compensates for the great force of the tensioned energy storage device. The combination of winding technology and rolling of the teeth around a curve achieved in this embodiment variant results in a maximum effect according to the lever laws in terms of minimizing the force required during the opening process.

• 1 und 2 schematische perspektivische Ansichten einer ersten Ausführungsvariante einer erfindungsgemäßen Schließ- und Dämpfungsvorrichtung,
• 3 eine perspektivische Explosionsansicht der Schließ- und Dämpfungsvorrichtung aus 1,
• 4 eine Draufsicht auf die Schließ- und Dämpfungsvorrichtung aus den vorangegangenen Figuren in einer Schließstellung,
• 5 eine Draufsicht auf die Schließ- und Dämpfungsvorrichtung der vorangegangenen Figuren in einer Öffnungsstellung,
• 6 eine perspektivische Ansicht einer an einem Schiebetürmöbel befestigten Schließ- und Dämpfungsvorrichtung,
• 7 die an einem Möbel befestigte Schließ- und Dämpfungsvorrichtung aus 6 mit Darstellung einer teilweise geöffneten Schiebetür,
• 8 und 9 perspektivische Ansichten einer Ausführungsvariante einer nicht erfindungsgemäßen Schließ- und Dämpfungsvorrichtung,
• 10 die Schließ- und Dämpfungsvorrichtung aus 9 in einer Schließstellung,
• 11 die Schließ- und Dämpfungsvorrichtung aus 9 in einer Öffnungsstellung,
• 12 eine Draufsicht auf eine weitere Ausführungsvariante einer erfindungsgemäßen Schließ- und Dämpfungsvorrichtung in der Schließstellung,
• 13 die Schließ- und Dämpfungsvorrichtung aus 12 in einer Öffnungsstellung,
• 14 ein Kraftverlaufsdiagramm zum Vergleich einer Federkennlinie einer herkömmlichen Schließ- und Dämpfungsvorrichtung und der Federkennlinie einer erfindungsgemäßen Schließ- und Dämpfungsvorrichtung,
• 15 eine Draufsicht auf eine weitere Ausführungsvariante einer erfindungsgemäßen Schließ- und Dämpfungsvorrichtung in einer Schließstellung,
• 16 eine Draufsicht auf die Schließ- und Dämpfungsvorrichtung aus 15 in einer Öffnungsstellung,
• 17 und 18 Ansichten der Schließ- und Dämpfungsvorrichtung aus den 15 und 16 ohne Darstellung des Gehäuses.
• 19 eine Draufsicht auf eine weitere Ausführungsvariante einer erfindungsgemäßen Schließ- und Dämpfungsvorrichtung in einer Schließstellung und
• 20 eine Draufsicht auf die Schließ- und Dämpfungsvorrichtung aus 19 in einer Öffnungsstellung.

Exemplary embodiments of the invention in the accompanying drawings are explained in more detail below. Show it:

• 1 and 2 schematic perspective views of a first embodiment variant of a closing and damping device according to the invention,
• 3 a perspective exploded view of the closing and damping device 1 ,
• 4 a top view of the closing and damping device from the previous figures in a closed position,
• 5 a top view of the closing and damping device of the previous figures in an open position,
• 6 a perspective view of a closing and damping device attached to a sliding door furniture,
• 7 the closing and damping device attached to a piece of furniture 6 depicting a partially opened sliding door,
• 8th and 9 perspective views of an embodiment variant of a closing and damping device not according to the invention,
• 10 the closing and damping device 9 in a closed position,
• 11 the closing and damping device 9 in an open position,
• 12 a top view of a further embodiment variant of a closing and damping device according to the invention in the closed position,
• 13 the closing and damping device 12 in an open position,
• 14 a force curve diagram for comparing a spring characteristic of a conventional closing and damping device and the spring characteristic of a closing and damping device according to the invention,
• 15 a top view of a further embodiment variant of a closing and damping device according to the invention in a closed position,
• 16 a top view of the closing and damping device 15 in an open position,
• 17 and 18 Views of the closing and damping device from the 15 and 16 without showing the housing.
• 19 a top view of a further embodiment variant of a closing and damping device according to the invention in a closed position and
• 20 a top view of the closing and damping device 19 in an open position.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the closing and damping device, the energy storage device, the deflection device and the like selected in the respective figures. These terms are not to be understood as restrictive, that is, these relationships can change due to different working positions or the mirror-symmetrical design or the like.

In the 3 is with the reference number 1 a total of an embodiment variant of a closing and damping device according to the invention for movable furniture parts, in particular for one in the 6 and 7 shown furniture 12 sliding sliding doors 15 designated. The closing and damping device 1 has, as in the 1 and 2 can be seen, a driver 4, in which, in the assembled state of the closing and damping device 1, an activator arranged on a sliding door 15 engages on a furniture body 12, which, when the sliding door 15 is opened, moves the driver 4 along a guide slot 23, 33 in the Housing 2, 3 of the closing and damping device 1 moves and thereby stretches an energy storage device 6 which is attached to the housing 2, 3 with a first end 61 and which is preferably designed as a tension spring. This energy storage 6, which during the opening process of the movable furniture part, for example the in 7 shown sliding door 15, is tensioned and its stored force during the later closing process of the sliding door as a retraction aid the final closed position of the sliding door 15 is used, is coupled at its other end 62 to a deflection device 5, which essentially consists of a gear 52, a rack 51 meshing with the gear 52 and a holder 53 arranged in a rotationally fixed manner on the gear 52.

The 4 shows the closing and damping device 1 in its closed position 5 in its open position after the activator attached to the sliding door 15 is out of engagement with the driver 4. In the in 4 In the closed position shown, the energy storage device 6 is essentially relaxed. For this purpose, the holder 53 of the deflection device 5 is in a position in which the end 62 of the energy storage device 6 attached to the holder 53 can still undergo a deflection. As soon as the sliding door 15 is opened, the driver 4 presses against the rack 51 via a clutch 8.

The front end of the rack 51 is provided with teeth 511 which mesh with the teeth of the gear 52. By moving the rack 51 (in the 4 and 5 to the right), the gear 52 and thus also the holder 53, which is non-rotatably attached to the gear 52, is rotated clockwise and the energy accumulator 6 is deflected and tensioned in such a way that the distance of the pivot point 521 of the gear 52 relative to the articulation of the energy accumulator 6 during the Opening process changed, especially reduced in size during the opening process. By reducing this distance, the lever arm and thus the force required to further tension the energy accumulator 6 are also reduced.

The resulting reduction in resistance when opening the sliding door results in a harmonious transition of the sliding door during the opening movement from a state in which the driver 4 is in engagement with the activator of the sliding door to the released state of the sliding door. In the solutions known from the prior art, there is a sudden drop in resistance when the activator leaves the engagement with the driver 4.

The holder 53 is according to that in the 1 until 4 The embodiment variant shown is attached to the gear 52 in such a way that the energy accumulator rests on a spiral-shaped support 531 when it is wound onto the holder 53. This spiral is oriented in such a way that the distance of the support 531 in the closed position of the gear 52 or the holder 53 is at a maximum distance from the pivot point 521 of the gear 52 and this distance decreases as the energy accumulator 6 is wound onto the holder 53.

The closing and damping device 1 further has a damping device 7, which is designed in particular as a pneumatic or hydraulic damping device, with a plunger 71 protruding with one end in a sealed manner into the damping device housing and with the other end on the housing 2 or 3 of the lock - and damping device 1 is fixed. The housing of the damping device 7 is coupled to the rack 51 and is carried along a guide slot 24, 34 in the housing 2, 3 of the closing and damping device 1 when the driver 4 is moved. The rack 51 is guided in the guide slots 24, 34 of the housing 2, 3 of the closing and damping device 1 preferably via two guide pins 513 which engage in the guide slots 24, 34 and are formed or attached to the rack 51.

The two housing parts 2, 3 of the closing and damping device 1 are preferably screwed together. For this purpose, threaded openings are provided at the four corners of the preferably rectangular housing 2, 3, into which screws 11 can be screwed and thus connect the two housing halves 2 and 3 to one another. The closing and damping device 1 can be screwed onto a piece of furniture via two further openings 25, 35 in the housing 2, 3.

The 6 and 7 show the closing and damping device 1 in the state attached to a piece of furniture. Shown here is a section of a sliding door cabinet with a rail 13, in which a sliding door 15 is slidably suspended via a rolling device 16, the rolling device 16 being able to be fixed in a locking element 14 at the end of the rail 13 in the closed position of the sliding door 15.

In the 8th until 11 an embodiment variant of a closing and damping device 1 not according to the invention is shown. Here, the holder 53 is not provided with a spiral-shaped support, but is essentially designed as a circular disk, from which a holding tongue 532 extends radially, to which the second end 62 of the energy accumulator 6 is attached. This attachment of the energy accumulator 6 to the deflection device 5 is preferably designed to be rotatable, namely to an axis of rotation oriented parallel to the axis of rotation 521 of the gear 52.

As per the 10 and 11 can be seen, when the closing and damping device moves from a closed position into the open position when moving the driver 4 by means of the coupling piece 8 on the rack 51 meshing with the gear 52, the entire energy accumulator 6 is pivoted downwards about the suspension point of the energy accumulator at the first end 61 of the energy accumulator 6. This ensures that the energy accumulator 6, which is preferably designed as a tension spring, is not deflected by the entire distance by which the rack 51 is displaced, but by a smaller distance, since the energy accumulator 6 has its second end 62, with which it is attached to the holder 53, in particular on the radially outward holding tongue 532, executes a rotary movement and not a linear displacement.

In the 12 and 13 a further embodiment variant of the closing and damping device 1 according to the invention is shown. Here is the energy storage 6 in contrast to the one in the 1 until 4 The embodiment variant described is not completely designed as a tension spring, but rather in the area of the area in operative connection with the holder 53 as a rope or straight wire piece 63, which when the rack 51 moves from the closed position to the open position ( 13 ) is wound on the holder 53.

As more in the 19 and 20 As shown alternatively, the energy accumulator 6 is designed as a band piece 64 in the area of the area that is in operative connection with the holder 53, which, as in the case of the 12 and 13 described embodiment variant when moving the rack 51 from the closed position to the open position ( 13 ) is wound on the holder 53. The band piece 64 is designed in particular as a plastic film hinge-like component, but a fabric band made of plastic, textile or thin metal is also conceivable. The band piece 64 is preferably designed as a separate component, which is attached on the one hand to the holder 53 of the gear 52 and on the other hand to the energy accumulator 6.

In the 15 until 18 A further advantageous embodiment of the closing and damping device 1 according to the invention is shown. Here, in contrast to the previous exemplary embodiments, the gear 52 is not circular, but elliptical in shape. The toothed rack, more precisely the area 511 of the toothed rack 51 provided with the teeth, is also shaped obliquely. This means that the rack 51 is wider in the plane perpendicular to the axis of rotation 521 of the gear 52 in a region in which it meshes with the gear 52 in a closed position of the closing and damping device 1 than in a region in which the rack 51 meshes with the gear 52 in an open position of the closing and damping device.

14 clearly shows a comparison of a force-path curve of a conventional locking device, also called self-closing device, according to the prior art (characteristic curve A) compared to a force-path curve of a closing and damping device 1 according to the invention (characteristic curve B). It can be clearly seen from characteristic curve B that with increasing deflection s, the force F required for deflection steadily decreases, while in a conventional closing and damping device, as shown by characteristic curve A, with increasing deflection s of the tension spring, there is also a larger one Force F has to be used.

Reference symbol list

1

Closing and damping device

2

Housing

3

Housing

4

taker

5

Deflection device

6

Energy storage

7

Damping device

8th

coupling

11

screw

12

Furniture/corpus

13

rail

14

Locking element

15

sliding door

16

Rolling device

23

Guide slot

24

Guide slot

25

opening

33

Guide slot

34

Guide slot

35

opening

51

Rack

52

gear

53

bracket

61

End

62

End

63

Rope or straight piece of wire

64

Piece of tape

71

Pestle

511

gearing

513

Guide pin

521

Pivot point/axis

531

In stock

532

retaining tongue

A

curve

b

curve

F

Power

s

Away

Claims (9)

Closing and damping device (1) for movable furniture parts, in particular for sliding doors (15) that can be moved on a piece of furniture (12), comprising - an energy storage device (6) attached to a housing (2, 3) with a first end (61), which tensioned during the opening process of a furniture part (15) and its stored force is used as a retraction aid in the final closed position during the closing process of the movable furniture part (15), - a damping device (7) and - a deflection device (5) with a gear (52), one with the toothed rack (51) meshing with the gear (52) and a holder (53) arranged in a rotationally fixed manner on the gear (52) and to which a second end (62) of the energy accumulator (6) can be attached, characterized in that - the deflection device ( 5) has a sequence curve that changes the distance between the articulation point of the energy accumulator (6) on the gear (52) and the pivot point (521) of the gear (52) during an opening or closing process. Closing and damping device Claim 1 , characterized in that the drain curve is provided on the holder (53). Closing and damping device Claim 2 , characterized in that the flow curve is designed as a spiral-shaped support (531) for the energy accumulator (6), the articulation point of the energy accumulator (6) being in a closed position at a maximum distance from the pivot point (521) of the gear (52). Closing and damping device according to one of the preceding claims, characterized in that the energy storage (6) is designed as a tension spring. Closing and damping device Claim 4 , characterized in that the end (62) of the energy storage device (6) attached to the holder (53) is designed as a rope or straight piece of wire (63). Closing and damping device Claim 4 , characterized in that the end (62) of the energy storage device (6) attached to the holder (53) is designed as a band piece (64). Closing and damping device Claim 5 or 6 , characterized in that the length of the band, rope or straight wire piece (63, 64) is dimensioned such that only the band, rope or straight wire piece (63) is in contact with the holder (53). Closing and damping device according to one of the preceding claims, characterized in that the gear (52) is elliptical and the rack (51) in the plane perpendicular to the axis of rotation (521) of the gear (52) in a region in which it is in a closed position the closing and damping device meshes with the gear (52), is wider than in an area in which the rack (51) meshes with the gear (52) in an opening position of the closing and damping device. Closing and damping device Claim 5 , characterized in that the energy storage (6) is rotatably attached to the deflection device (5) about an axis of rotation parallel to the axis of rotation (521) of the gear (52).

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