EP2781679A2 - Acceleration and/or braking device - Google Patents

Abstract

The device has an activator and a driver (28) moved in a guide direction, where the activator is provided with a contact surface for engaging with the driver. A guide element is provided for guiding a movement of the activator in a direction at an angle to the guide direction. The activator is moved with the driver from an engagement position into an external engagement position. The guide element is designed as a pivot bearing, and the activator is pivotally mounted in the guide direction. A pivot axis of the guide element is aligned parallel to the guide direction. An independent claim is also included for a sliding door fitting for a furniture.

Description

The invention relates to an acceleration and / or braking device for controlling at least one along a guide rail in a guide direction directed movement of a movable furniture part, with an activator and a movable in the guide direction driver, wherein the activator has a contact surface for engagement with the driver.

From the DE 10 2011 050 394 A1 a fitting for a movable furniture part in the form of a sliding door is known, which is guided over rollers in a guide rail on a furniture body. The fitting comprises a fixed to the furniture body self-closing with a movable driver, which can be brought into engagement with a arranged on the sliding door activator. In this way, the driver can slow down the sliding door via the activator in order to avoid a stop of the sliding door on the furniture body and the associated disadvantages. However, it is disadvantageous that the activator must be movable over the entire travel of the sliding door, so that this space can not be used otherwise. Especially with a center door that can be opened in both directions, problems arise for the installation of such a self-closing.

From the DE 20 2012 001 115 U1 is a sliding door cabinet with at least three door leaves known. The door leaves are movable along two mounting rails, wherein a combined acceleration and deceleration device is provided with a driving element, which is a mounting rail carrier penetrates. As a result, the acceleration and deceleration device can be arranged behind the mounting rail, which requires a comparatively large amount of installation space and makes assembly costly.

It is therefore an object of the invention to provide an acceleration and / or braking device that can make optimal use of the available space and is as little as possible visible.

This object is achieved by an acceleration and / or braking device with the features of claim 1. Preferred developments are the subject of the dependent claims.

In one aspect of the invention, a guide member is provided for guiding movement of the activator in a direction angular to the guide direction, and the activator is disengageable from an engaged position with the cam to a position. As a result, the installation space of the activator can also be better utilized in the guide direction, since the activator only has to be moved into an engagement position in the travel range of the driver if necessary. Outside the travel range, the installation space can be used for other purposes.

The specified acceleration and / or braking device is based on the consideration that a positive engagement between the driver and the activator in the guide direction must act to brake the moving furniture part with the driver in the guide direction, for example by a damper, or to accelerate. In the prior art, such as in a middle sliding door in a three-door sliding door cabinet at least, this positive locking in the guide direction prevents, however, that the movable furniture part seen in the guide direction can be moved behind the positive connection, so that, for example, the aforementioned middle sliding door either in or can only be opened against the direction of leadership.

The activator can be arranged either on the furniture body or on the moving furniture part. Accordingly, then arranged on the acceleration and / or braking device driver is attached to the other part, either on moving furniture or furniture body. The activator can be arranged at an angle to the guide direction movably guided in the acceleration and / or braking device. In this way, the activator can be arranged in the range of movement of the furniture part to be moved and moved in the case of a positive fit to be produced in an engaged position and brought into engagement with the driver. This positive connection can be provided by a one-sided concern of contact surfaces on the driver and the activator.

The guide element can preferably be designed as a pivot bearing with a pivot axis about which the activator is pivotally mounted. In this way, the activator can be pivotally mounted on this pivot bearing and pivoted by any actuator in an engaged position or out of it. Instead of a pivot bearing could be provided as a guide element and a curve guide or other mechanism for moving the activator.

In one embodiment, the pivot axis is aligned parallel to the guide direction, so that short switching paths of the activator are made possible. Further, a contact surface of the activator may be disposed on a protruding from the pivot bearing first lever arm, and the first lever arm is movable via a protruding from the pivot bearing second lever arm. On the second lever arm can act a fixed or movable actuator. The two lever arms can be integrally depending on the application and, for example, designed as angled in its longitudinal extent lever.

Preferably, the activator is held by the guide member to a holder. The holder thus provides the counterpart to the guide element on the activator ready, which may be, for example, the further pivot bearing part of the pivot bearing. On the holder also stops for limiting the pivoting movement of the activator can be provided.

The two lever arms preferably protrude from the pivot bearing in different radial directions. Preferably, the two lever arms clamped from the pivot axis of the pivot bearing seen in an opening angle between greater than 90 ° and less than 180 °, in particular between 110 ° and 170 °. In this way, the second lever arm, which acts as Betätigungshebelarm for the first, the contact surface having lever arm, are actuated to move the first lever from the same side, on which also the Driver is arranged so that the corresponding switching device for moving the second lever arm of the activator does not have to be arranged in the range of movement of the furniture part to be moved.

By a suitable design of the first lever arm, for example by the first lever arm is formed longer than the second lever arm, it can be achieved that the second lever arm is only slightly moved to bring the first lever arm in an engaged position or out of engagement with the driver.

To move the activator, switching elements arranged outside the movement range of the movable furniture part can move the second lever arm into the movement range of the movable furniture part and thus push out the first lever arm from the movement range of the movable furniture part and produce a positive connection with the driver.

In this case, a biasing element can be provided as an additional element or alternatively for one of the switching elements for biasing the activator to the driver in an engaged position or away from the driver in a non-engaged position. In this way, the activator can be brought into a forced rest position or a forced engagement position, so that the activator can not move unintentionally in the event of vibrations or other forces unintentionally applied to the activator. The biasing member can also be extended to a flip-flop mechanism, which also puts the activator in the engaged position with the driver in a forced rest position.

Preferably, the first switching element for the activator comprises a parallel to the guide direction aligned ramp, by means of which the activator is movable. The ramp may have on opposite sides an angular, not parallel to the guide direction formed portion which may be formed as a slope, arcuate contour or the like. About this switching element, the activator can be moved without a user must manually move the activator for establishing the engagement position.

A second switching element for the activator is formed on both sides of the housing of a self-closing, wherein the also formed as a ramp switching elements cause the activator is pivoted in contact in the opposite direction. As well as the first switching element and this ramp can be formed as a slope, arcuate structure or the like.

In another embodiment, the activator is fixed to a top floor or a bottom of a furniture body and pivotally mounted about a vertical axis. Thereby, the activator can be arranged largely invisible within a furniture body and pivoted to be engaged or disengaged with a driver of the acceleration and / or braking device. In this case, a switching element can be provided on the movable furniture part, by means of which the activator is movable, so that a compact construction is made possible.

The acceleration and / or braking device is preferably used in a fitting for a piece of furniture, in particular sliding door fitting. But it is also possible to provide the acceleration and / or braking device in a pullout guide or a pivotable flap or door. Furthermore, an acceleration device for a movable furniture part can also be provided, for example as with an ejection mechanism or a latching mechanism.

Fig. 1

eine perspektivische Ansicht auf einen Ausschnitt aus einem Möbel mit einer Mitteltür in geöffneter Position,

Fig. 2

eine perspektivische Ansicht auf einen Ausschnitt aus einem Möbel mit einer Mitteltür in geschlossener Position,

Fig. 3

eine perspektivische Ansicht einer Einzelheit aus Fig. 1,

Fig. 4

eine Draufsicht auf eine Mitteltür,

Fig. 5

eine seitliche Schnittansicht auf das Möbel aus Fig. 2 entlang der Schnittlinie V - V in einem ersten Zustand, wobei der Aktivator in Eingriff mit dem Mitnehmer gezeigt ist,

Fig. 6

eine seitliche Schnittansicht eines Aktivators mit einer Achse,

Fig. 7

eine seitliche Ansicht des Aktivators aus Fig. 6 in einem Lagerblock,

Fig. 8

eine seitliche Schnittansicht auf das Möbel aus Fig. 2 entlang der Schnittlinie V - V in einem zweiten Zustand, wobei der Aktivator außer Eingriff mit dem Mitnehmer gezeigt ist,

Fig. 9

eine Draufsicht auf ein Schaltelement aus dem Möbel aus Fig. 1 im Horizontalschnitt,

Fig. 10

eine Draufsicht auf ein weiteres Schaltelement aus dem Möbel aus Fig. 1 im Horizontalschnitt,.

Fig. 11A und 11B

zwei perspektivische Ansichten einer weiteren Ausführungsform eines Möbels mit einer erfindungsgemäßen Beschleunigungs- und/oder Bremsvorrichtung;

Fig. 12

eine perspektivische Detailansicht des Möbels der Figur 11B;

Fig. 13A und 13B

zwei Ansichten der Beschleunigungs- und/oder Bremsvorrichtung aus einer entgegengesetzten Blickrichtung des Möbels der Figur 11; wobei der Aktivator im Eingriff und außer Eingriff mit dem Mitnehmer gezeigt ist,

Fig. 14

zwei Ansichten der Beschleunigungs- und/oder Bremsvorrichtung der Figur 13 ohne Aktivator als Explosionsdarstellung und im montierten Zustand,;

Fig. 15A bis 15E

mehrere Untersichten der Beschleunigungs- und/oder Bremsvorrichtung der Figur 13 in unterschiedlichen Positionen, und

Fig. 16A bis 16C

mehrere Ansichten des Aktivators und des Halters der Beschleunigungs- und/oder Bremsvorrichtung der Figur 13.

The above-described characteristics, features and advantages of this invention will be more clearly understood in connection with the following description of the embodiments which will be described in connection with the drawings, wherein:

Fig. 1

a perspective view of a section of a furniture with a center door in the open position,

Fig. 2

a perspective view of a section of a furniture with a center door in the closed position,

Fig. 3

a perspective view of a detail Fig. 1 .

Fig. 4

a top view of a center door,

Fig. 5

a side sectional view of the furniture Fig. 2 along the section line V-V in a first state, wherein the activator is shown in engagement with the driver,

Fig. 6

a side sectional view of an activator with an axis,

Fig. 7

a side view of the activator off Fig. 6 in a warehouse block,

Fig. 8

a side sectional view of the furniture Fig. 2 along the section line V-V in a second state, wherein the activator is shown out of engagement with the driver,

Fig. 9

a plan view of a switching element from the furniture Fig. 1 in horizontal section,

Fig. 10

a plan view of another switching element from the furniture Fig. 1 in horizontal section ,.

Figs. 11A and 11B

two perspective views of another embodiment of a piece of furniture with an acceleration and / or braking device according to the invention;

Fig. 12

a detailed perspective view of the furniture of the FIG. 11B ;

Figs. 13A and 13B

two views of the acceleration and / or braking device from an opposite direction of the furniture of the FIG. 11 ; wherein the activator is shown engaged and disengaged from the driver,

Fig. 14

two views of the acceleration and / or braking device of FIG. 13 without activator as exploded view and in mounted condition;

Figs. 15A to 15E

several lower views of the acceleration and / or braking device of FIG. 13 in different positions, and

Figs. 16A to 16C

several views of the activator and the holder of the acceleration and / or braking device of FIG. 13 ,

A schematically illustrated furniture 2 comprises a first outer door 4, a center door 6 and a second outer door 8, which belongs to a fitting 10 belonging Run profile 12 are slidably held on a top floor of a furniture body 14. The following statements will be described with reference to the center door 6 in more detail. However, they can also be transmitted in a manner not shown arbitrarily to the two outer doors 4, 8.

The center door 6 is held in the guide profile 20 in a guide direction 20 by means of two inner running parts 16 belonging to the fitting 10. At the center door 6 a bracket 10 belonging to the holder 22 is further fixed in the movable in a Fig. 5 shown activator 24 is held. The inner running parts 16 and the holder 22 can also be integrated as a common functional unit in a component. In addition, several activators 24 may be provided on the center door 6.

The fitting 10 also includes a in Fig. 5 shown Selbsteinzug 26, of which in Fig. 1 only one driver 28 is shown, which is movably mounted on a housing 30 in the guide direction 20. The driver 28 may be positively engaged with the activator 24 to pull the center door 6 via the activator 24 in the guide direction 20 or to dampen, so to brake. Finally, the fitting 10 also includes switching elements 32 and 64 to be described.

As in Fig. 5 shown, the sliding doors 4 and 8 roll on rollers 34 which are guided in the running profile 12 in corresponding raceways 36. The rollers 34 for the two outer doors 4, 8 are held on outer barrel parts 38 and out in the seen from the furniture body 14 from more distant career. The rollers 34 for the center door 6 are connected to the in Fig. 1 shown inner barrel parts 16 and guided in the adjacent to the furniture body 14 arranged career. The running profile 12 comprises a horizontally projecting web 39, under which a bolt 41 can be pushed, which forms a lift-off for an inner race member 16. A second arranged on the outer race 38 locking bolt 45 can be moved as a further anti-lifting device for the outer doors 4, 8 under the track 36 vertically upwards.

The activator 24 is pivotally supported on a bearing block 40 belonging to the holder 22. For this purpose, the activator 24 is pivotally mounted on an axle 42 which is fixedly provided on the bearing block 40. The axis 42 may be formed as a bearing pin which is surrounded by a bearing sleeve 49 of the activator 24.

From the axis 42 extends substantially radially a first lever arm 46, at the radial end of a contact surface 48 is formed. In an opening angle 50 of about 165 ° to 175 ° to the first lever arm 46 extends to the activator 24, a second lever arm 52 radially to the axis 42nd

The two lever arms 46, 52 can move in a pivoting direction 54 back and forth, wherein the pivoting range can be limited by stops on the bearing block 40. If the second lever arm 52, for example, moves counterclockwise 54, the first lever arm 46 is also moved counterclockwise 54 and vice versa.

Furthermore, the activator 24 can be biased in a pivoting direction via a restoring element 58 in the form of a spring, for example a spiral spring, so that the activator 24 is always pressed against the engagement direction away from the driver 28 or towards the driver 28, for example.

In Fig. 5 the activator 24 is shown in a position in which it is actuated by the switching element 32, which is arranged on a vertical web 44 of the barrel profile 12. In this case, the switching element 32 is applied to the second lever arm 52 of the activator. In contrast, the activator 24 is in Fig. 8 shown in a position in which it is not actuated by the switching element 32 and with the first lever arm 46 and the contact surface 48 in a rest position in which no engagement with the driver 28 is possible. The activator 24 lies in the guide direction 20, viewed in front of the switching element 32 and is therefore in Fig. 8 also not shown cut.

If the center door 6 and thus the activator 24 from the in Fig. 8 shown position against the guide direction 20 pulled, then moves the second lever arm 52 of the activator 24 to the switching element 32. The switching element 32 has, viewed in the guide direction 20 at its ends in Fig. 9 shown ramps 62 which are formed as run-on slopes. These ramps 62 may be linear, arcuate, or otherwise configured.

As soon as the second lever arm 52 of the activator 24 touches one of the ramps 62 of the switching element 32, the corresponding ramp 62 pushes the second lever arm 52 in the pivoting direction 54. As a result, the contact surface 48 arranged on the first lever arm 46 is also in the pivoting direction 54 and thus for Driver 28 moves and reaches a contact surface on the Driver 28. This positive engagement of the contact surfaces acts in and against the guide direction 20, so that the driver 28 can influence the movement of the lever arm 46 and the activator 24 and thus the center door 6 accelerating or decelerating.

In the present example, the driver 28 delays after the establishment of the positive connection with the contact surface 48, the movement of the center door 6 and moves it via the activator 24 against the guide direction 20 as viewed in an in Fig. 5 illustrated rest position.

The center door 6 and thus the activator 24 can be pulled out of this rest position by pulling in or against the guide direction 20 again. In this case, the contact surface 48 moves on the first lever arm 46 on a arranged on the housing 30 of the self-closing 26 switching element 65, which is designed as a ramp 64. By the simultaneous running of the switching element 32 formed on the ramp 62 and the supporting effect on the restoring force of the restoring element 58, both lever arms 46, 52 and thus the positive locking element 48 are moved counter to the pivoting direction 54. Thus, the positive connection between the driver 28 and the contact surface 48 is released and the center door 6 can move freely in or against the guide direction 20 again. Between the ramps 62 and 64, a straight bar 63 is provided.

The activator 24 is biased by a spring in an initial position in the illustrated embodiment. Of course, it is also possible to dispense with such a spring and to switch over several switching elements in the guide direction the activator in the desired position. In addition, more than two levers may be provided on the activator 24 instead of two levers, so that at least two levers for switching the lever 46 to the contact surface 48 may be used. Furthermore, it is conceivable that the ramps 62 are combined with the return element 58 or the ramps 64 with the return element 58.

Of course, the ramps 64 can also be formed in one piece on the running profile 12.

In the Figures 11A and 11B shows a further embodiment of a piece of furniture 1 according to the invention, on which an acceleration and / or braking device 70 is provided. The furniture 1 comprises a furniture body 3 with a bottom 13 and a top floor 11 to which a sliding door 5 is movably mounted by means of a fitting 69. For this purpose, a rail 7 and the bottom 13, a rail 9 is fixed to the top 11.

As in the enlarged view of FIG. 12 can be seen, is located on the furniture body 3 on the top 11 an activator 71 which can be brought in a movement of the sliding door 5 in the guide direction 20 in engagement with a driver 80 of the acceleration and / or braking device 70.

The fixed to the sliding door 5 acceleration and / or braking device 70 is in the FIGS. 13A and 13B shown. The activator 71 is fixed by a holder 72 on the underside of the topsoil 11 and can be pivoted about a vertical axis arranged at an angle to the guide axis 20. The sliding door 5 comprises a frame 17 on which a filling element 15 in the form of a glass pane is inserted, wherein an upper sliding door fitting 19 with a roller 21 is provided on the frame 17. The roller 21 can roll on a rail 7. On the sliding door fitting 19, a switching element 90 is further formed, by means of which the activator 71 is movable.

In FIG. 13B the sliding door 5 is shown in an open position, in which the activator 71 is arranged at a distance from a driver 80 on the sliding door 5. The driver 80 is movably mounted along a guideway 81 and can be biased via a biasing element, such as a spring, into an initial position. Furthermore, the driver 80 may be coupled to a damper in order to be able to brake a movement of the sliding door 5 gently.

In the Figures 14A and 14B the sliding door 5 is shown without the activator 71. It is shown a self-retraction 92, in which a driver 80 is movably mounted along a guide track 81 which is arranged on a housing 82. The housing 82 can be fixed by means of screws 83 to the frame 17 of the sliding door 5, for which purpose corresponding openings 84 are formed on the housing 82.

The function of the activator 71 and the driver 80 will be described below with reference to FIGS. 15A to 15E explained.

In Figure 15A the sliding door 5 is shown in an open position, in which the driver 80 is arranged at a distance from the activator 71. The activator 71 is rotatably mounted about an axis 73 and comprises on a first, arranged perpendicular to the axis 73 side a first lever arm 74 on which a sliding door 5 facing projection 75 protrudes, which can reach as a contact surface with the driver 80 into engagement. On a second, the lever arm 74 opposite side of the activator 71, a second lever arm 76 is formed which protrudes into the movement path of the sliding door 5 and can be actuated via the switching element 90. The second lever arm 76 is biased by a spring 77, whereby the first lever arm 74 formed on a holder 72 stop 79 (see FIG. 16 ) comes to the plant.

Will now the sliding door 5 accordingly FIG. 15B moved in the closing direction X, as shown by the arrow, the formed on the sliding door fitting 19 switching element 90 comes into contact with the second lever arm 76, wherein in a further method of the sliding door 5 in the closing direction X of the activator 71 against the force of a spring 77th is pivoted about the pivot axis 73.

In FIG. 15C the switching element 90 has been moved in contact with the second lever arm 76 further in the closing direction X, so that the switching element 90 has reached a position which is opposite to the stop 79. Thus, the actual pivoting operation of the activator 71 is completed and by the pivoting of the activator 71, the first lever arm 74 has now been moved with the projection 75 in the direction of the sliding door 5.

In a movement of the sliding door 5 further in the closing direction X of the activator 71 remains due to the contact of the switching element 90 with the second lever arm in the pivoted position, now the projection 75 abuts against a stop on the driver 80 and thereby the driver 80 from a latched Unlocked position. The driver 80 includes a U-shaped receptacle into which the projection 75 engages after unlocking, as shown in FIG FIG. 15E is shown. Due to the release of the driver 80 this can now be moved along the guide track 81 to move the sliding door 5 relative to the furniture body 3. The driver 80 may be coupled to a self-closing mechanism, a damped self-closing mechanism, an ejection mechanism, or other mechanical mechanism to control movement of the sliding door 5. Preferably, a self-closing is provided, by means of which the movement of the sliding door 5 is braked before reaching the final closed position, wherein the self-closing moves the sliding door 5 in a predetermined closed position. By the movement of the sliding door 5 in the closing direction X, the switching element 90 except Engagement with the second lever arm 76 passes, wherein on the sliding door fitting 19, a further switching element 91 is provided in the form of a projection which now bears against the second lever arm 76 and ensures that the activator 71 in the pivoted position against the force of the spring 77th is held.

When the sliding door 5 is moved in an opening direction opposite to the closing direction X, first the driver 80 is moved along the guideway 81 and then latched to an angled end section of the guideway 81, wherein the projection 75 on the activator 71 is released by pivoting the driver 80. Subsequently, the sliding door 5 can be further moved in the opening direction until the two switching elements 90 and 91 out of engagement with the second lever arm 76, so that then due to the force of the spring 77, the activator 71 can be pivoted again until the first lever arm 74 for Appendix arrives at the stop 79, so that the in Figure 15A shown position is reached.

In the FIGS. 16A to 16C the activator 71 is shown in detail. The activator 71 is pivotally mounted about an axis 73 on the holder 72, wherein the holder 72 is formed as a substantially plate-shaped sheet metal part which is fixed to the underside of an upper floor. On the holder 72 two stops 79 are formed, which limit the range of motion of the activator 71.

The activator 71 is biased by the spring 77, wherein the spring 77 is at least partially inserted into a receptacle 78 on the second lever arm 76. The spring 77 is supported on a stop 79, which is formed on the holder 72. Furthermore, an opening 96 for inserting a bolt 95, which also passes through an opening 97 in the activator 71, is provided on the holder 72. The bolt 95 forms the axis 73 of the activator 71.

In the embodiment of FIGS. 11 to 16 the activator 71 is fixed to the topsoil 11, whereby it is of course also possible to provide the activator at the top or bottom of the bottom 13. In addition, the driver 80 can be coupled with other mechanisms instead of a damped self-closing mechanism, for example with a self-closing device without a damping device or with an ejection mechanism.

In the illustrated embodiments, the acceleration and / or braking devices have been described in a fitting for a sliding door. It is also possible to provide the acceleration and / or braking devices in other fittings for furniture or household appliances, such as a drawer slide for drawer or shelf drawer or a hinged flap or door.

LIST OF REFERENCE NUMBERS

1

Furniture

2

Furniture

3

furniture body

4

Front door

5

sliding door

6

central door

7

rail

8th

Front door

9

rail

10

fitting

11

topsoil

12

tread

13

ground

14

furniture body

15

filling element

16

Inner race member

17

frame

19

sliding door hardware

20

guide direction

21

role

22

holder

24

activator

26

self-closing

28

takeaway

30

casing

32

switching element

34

role

36

career

38

Outer race member

39

horizontal web

40

bearing block

41

bars

42

axis

44

vertical web

45

bars

46

lever arm

48

contact area

49

bearing sleeve

50

opening angle

52

lever arm

54

pan direction

58

Return element

62

ramp

63

strip

64

ramp

65

switching element

69

fitting

70

Acceleration and / or braking device

71

activator

72

holder

73

axis

74

lever arm

75

head Start

76

lever arm

77

feather

78

admission

79

attack

80

takeaway

81

guideway

82

casing

83

screw

84

opening

90

switching element

91

switching element

92

self-closing

95

bolt

96

opening

97

opening

X

closing direction

Claims (17)

Acceleration and / or braking device for at least one movable furniture part (5, 6, 15, 17), with an activator (24, 71) and in a guide direction (20) movable driver (28, 80), wherein the activator (24 , 71) has a contact surface (48, 75) for engagement with the driver (28, 80), characterized in that a guide element (42, 73) for guiding movement of the activator (24, 71) in a direction at an angle to Guiding (20) is provided and the activator (24, 71) from an engagement position with the driver (28, 80) is movable into a position out of engagement. Acceleration and / or braking device according to claim 1, characterized in that the guide element by a pivot bearing (42, 73) is formed, on which the activator (24, 71) is pivotally mounted. Acceleration and / or braking device according to claim 2, characterized in that the pivot axis of the pivot bearing (42) is aligned parallel to the guide direction (20). Acceleration and / or braking device according to claim 2, characterized in that the pivot axis of the pivot bearing (73) is aligned at an angle to the guide direction (20). Acceleration and / or braking device according to one of the preceding claims, characterized in that the movable furniture part (5, 6, 15, 17) along a guide rail (36) is movably mounted in a guide direction (20). Acceleration and / or braking device according to one of the preceding claims, characterized in that the contact surface (48, 75) on a of the pivot bearing (42, 73) protruding first lever arm (46, 74) is arranged, and the first lever arm (46 , 74) via a pivot bearing (42, 73) projecting second lever arm (52, 76) is movable. Acceleration and / or braking device according to claim 6, characterized in that the two lever arms (46, 52, 74, 76) project from the pivot bearing (42, 73) in different radial directions. Acceleration and / or braking device according to claim 6 or 7, characterized in that the two lever arms (46, 52, 74, 76) seen from the pivot axis of the pivot bearing (42, 73) in an opening angle (50) between greater than 90 ° and less than or equal to 180 ° span. Acceleration and / or braking device according to one of the preceding claims, characterized in that the activator (24, 71) via the guide element (42, 73) on a holder (22, 72) is held, the stops (79) for limiting the Pivoting movement of the activator (24, 71). Accelerating and / or braking device according to one of the preceding claims, characterized in that at least one switching element (32, 90) is provided to disengage the activator (24, 71) from a position in an engaged position to the driver (28, 80 ) to move. Acceleration and / or braking device according to one of the preceding claims, characterized in that at least one switching element (65) is provided to move the activator (24) from an engagement position to a position out of engagement with the driver (28). Acceleration and / or braking device according to claim 10 or 11, characterized in that the switching element (32, 65) at least one angularly to the guide direction (20) aligned ramp (62, 64) by means of which the activator (24) is movable. Acceleration and / or braking device according to claim 12, characterized in that the at least one ramp (62) on opposite sides an angular, not parallel to the guide direction (20) formed section. Acceleration and / or braking device according to one of the preceding claims, characterized in that the activator (71) on an upper floor (11) or a bottom (13) of a furniture body is fixed and pivotally mounted about an angle to the guide direction (20) arranged axis is. Acceleration and / or braking device according to claim 14, characterized in that on the movable furniture part (5, 6), a switching element (90) is provided, by means of which the activator (71) is movable. Acceleration and / or braking device according to one of the preceding claims, characterized in that a biasing element (58, 77) for biasing the activator (24, 71) to the driver (28, 80) in an engaged position or away from the driver (28 , 80) is provided in a disengaged position. Fitting (10) for a piece of furniture (2), in particular sliding door fitting, with a first furniture part (14) designed as a furniture body (14) and a second furniture part (6, 15) movable on the furniture body (14), characterized in that an acceleration and / or braking device according to one of the preceding claims for controlling the movement of the movable second furniture part (6, 15) is provided.

Images