DE10227078A1 - Damper for swivel movement between one fixed and one swiveling piece of furniture consists of damping element as prismatic joint, sliding body, hollow body and control element - Google Patents

Abstract

The damping element (30) is activated in a partially swivel area adjoining an end position and consists of a prismatic joint in the form of at least one sliding body (43)guided in a hollow body (31). The prismatic joint is directly or indirectly positioned on one of two parts of the furniture article (1,5).; the other part has at least one control elements (11,27). Between the hollow body and the sliding body is a spring element. The damping element is activated in a part-swivel area next to an end position.

Description

The invention relates to a device for steaming the swivel movement in a swivel range limited by two end positions one pivotally mounted relative to a fixed piece of furniture Furniture part by means of a damping element, at least in a partial swivel area adjacent to an end position is activated.

Swiveling furniture parts are e.g. Flaps, doors, etc., a piece of furniture. The fixed piece of furniture is then for example the body of the piece of furniture. The swivel range is then e.g. limited by an open and a closed End position of the locking flap. The two pieces of furniture can if necessary e.g. about a Swivel joint to be connected. The swivel joint can, for example a concealed hinge, a hinge, etc. The swivel range in which the damping element activated, borders either the closed or the open End position of the pivoted piece of furniture.

From the DE 201 04 100 U1 a device for damping a pivoting movement is known. Here, the articulated lever of a concealed hinge actuates the lever arm of a rotary damper, which is arranged on the outside of the articulated cup.

The present invention lies based on the problem of developing a device that a low noise Allows reaching the end position of the swivel movement and both in the furniture parts integrated as well as can be retrofitted to this.

This problem is solved with the Features of the main claim solved. For this purpose, the damping element includes a thrust joint, which consists of at least one sliding body guided in a hollow body. The thrust joint is directly or indirectly at one of the two against each other pivoted pieces of furniture arranged. At least on the piece of furniture piece not supporting the sliding joint an actuator arranged, at least when damping is activated with the thrust joint a transmission is coupled to form. With activated damping displaces within of the sliding joint of the sliding body in the hollow body throttled a gas and / or the sliding body slides in the hollow body greater Friction in at least one area along the common parting line. Between the hollow body and the sliding body a spring element is arranged that at least counteracts the sliding body the direction of the muted Sliding body movement loaded.

The pivoting movement of the movable piece of furniture is translated into a translatory movement by means of the gear of the thrust joint. Move the hollow body and the sliding body yourself relative to each other. Form the hollow body and the sliding body in a first alternative, a cylinder-piston unit. in this connection becomes a gas from a displacement space throttled displaced within the cylinder. The throttling causes a delay the swiveling movement and prevents a rebound when reaching the End position of the swivel movement. The end position of the swivel movement is therefore low noise reached.

The cylinder-piston unit can do this directly on the piece of furniture they store or, for example be attached to an adapter part which is connected to the supporting piece of furniture is. Here, either the cylinder or a piston rod Cylinder-piston unit to be connected to the supporting piece of furniture.

Is the piece of furniture that the cylinder-piston unit wearing, the pivoted piece of furniture, is on the fixed piece of furniture actuator arranged that the damping element activated. However, the cylinder-piston unit is fixed with the one Piece of furniture connected, is the actuator arranged on the pivoted piece of furniture.

The e.g. single-acting cylinder-piston unit and the actuator are with damping activated coupled as a gearbox. This can e.g. a sliding wedge gear, a Slider crank gear etc.

The two that make up the transmission Components can e.g. Be part of a swivel joint, you can in its immediate Be arranged close you can but also e.g. located in the area of the furniture parts, in where the swivel movement has the largest radius Has.

The cylinder-piston unit can fixed or - by at least one adjustable throttle or orifice valve - adjustable Damping characteristic to have. This can e.g. linear, logarithmic, progressive, etc.

Form in a second alternative the hollow body and the sliding body a coordinated friction pairing. The sliding body is then a friction slide carrying a friction lining, which is used to dampen the Swiveling movement of the corresponding furniture part only with great effort in the hollow body can be pushed in. Which, of course, when retracting the friction slide into the the friction lining only on the hollow body or both - the parts moved relative to each other - be arranged.

A third alternative is one Combination of pneumatic and friction mechanical damping. In this case, the piston of the cylinder-piston unit slides with it greater Friction in the corresponding cylinder bore of the hollow body. Instead of the cylindrical jacket Contour can be the parting line between the piston or friction slide and the leading Recess of the hollow body almost any - for a sliding joint conceivable - have space.

Further details of the invention result from the subclaims and the following description of a schematically illustrated embodiment.

1 : Partial view of a piece of furniture with the flap open;

2 : Pot joint;

3 : Housing of a damping device;

4 : Thrust joint as a pneumatic cylinder-piston unit, extended;

5 : how 4 , but retracted;

6 : Thrust joint as friction damper, extended;

7 : Front view of the friction slide;

8th : Cut through 1 ;

9 : 8th , angled by 75 °;

10 : 8th , angled by 90 °;

11 : Front view too 4 ;

12 : Detail off 4 ,

The 1 shows a device for damping the pivoting movement of a relative to a stationary piece of furniture ( 1 ) pivoted piece of furniture ( 5 ). The fixed piece of furniture ( 1 ) is, for example, the body ( 1 ) of a piece of furniture. The pivoted piece of furniture ( 5 ) is for example a flap ( 5 ), for example using two concealed hinges ( 10 ) to swing open on the body ( 1 ) is attached. The swivel range of the flap ( 5 ) is limited, for example, by an open and a closed end position. On the closure flap ( 5 ) is a damping element in the exemplary embodiment ( 30 ) arranged. This includes a push joint ( 40 ).

The 2 shows a spring-loaded concealed hinge ( 10 ). It includes a mounting arm ( 11 ), an articulated pot ( 12 ), Articulated lever ( 26 . 27 ) and a spiral spring, not shown here.

The mounting arm ( 11 ) is, for example, a partially hollow, rectangular arm with which the concealed hinge ( 10 ) in the body ( 1 ) the piece of furniture is aligned and fastened, cf. 1 , In the articulated pot ( 12 ) pointing area of the mounting arm ( 11 ) are two bolts ( 23 . 24 ) in which an outer articulated lever ( 27 ) and an inner articulated lever ( 26 ) are stored. The bolt ( 23 ) of the outer articulated lever ( 27 ) is in the direction of the joint pot ( 12 ) and the interior of the body ( 1 ) offset to the bolt ( 24 ) of the inner articulated lever ( 26 ). The articulated levers ( 26 . 27 ) connect the mounting arm ( 11 ) with the articulated pot ( 12 ).

The articulated pot ( 12 ) has an approximately rectangular frame in the exemplary embodiment ( 13 ), the length of which is in the longitudinal direction of the concealed hinge ( 10 ) is larger than its width. A plate-like bottom part ( 14 ) closes the bottom of the frame ( 13 ). A side (19) of the frame (19) oriented transversely to the longitudinal direction 13 ) has a rectangular recess ( 17 ). In this case, this recess on the mounting arm ( 17 ) as the movement space of the articulated arms ( 26 . 27 ). Opposite this side (19) and the recess ( 17 ) is the framework ( 13 ) open or forms an approximately square recess ( 15 ) that are flush with the bottom part ( 14 ) connects. The frame ( 13 ) has a mounting flange on its top ( 16 ) with holes. Near the side of the frame on the mounting arm ( 19 ) are in the frame ( 13 ) the articulated lever ( 26 . 27 ) in bolts ( 28 . 29 ) offset from one another in an articulated manner. The hinge pin ( 28 ) of the outer articulated lever ( 27 ) is near the top of the frame ( 13 ) at the recess ( 17 ). The hinge pin ( 29 ) of the inner joint ( 26 ) is in the direction of the recess ( 15 ) and towards the bottom part ( 14 ) offset.

The 3 shows a housing ( 31 ) of the damping element ( 30 ). This is, for example, a partially cylindrical plastic body with a largely round base, the height of which corresponds, for example, to one third of its diameter. It ends in a flange collar ( 36 ), whose diameter is a few millimeters larger than the base area mentioned. The bottom of the flange collar ( 36 ) lies on the surface of the piece of furniture after assembly ( 5 ) and thus covers the edge of the cutout ( 6 ), see. 1 ,

The housing ( 31 ) has in the longitudinal direction of the concealed hinge ( 10 ) a blind hole ( 34 ). Concentric to the hole ( 34 ), which can also be part of a sleeve-shaped, separate insert, there is a displacement pin in this ( 35 ). The diameter of the e.g. cylindrical pin ( 35 ) is, for example, 2/3 smaller than the diameter of the hole ( 34 ). The hole ( 34 ) and the pin ( 35 ) have approximately the same length in the exemplary embodiment. The housing ( 31 ) has in the area in front of the hole ( 34 ) a groove running parallel to the plastic body axis ( 32 ) with, for example, a circular cross-section. Between this groove ( 32 ) and the bore ( 34 ) a short rectangular channel extends ( 33 ). Above the canal ( 33 ) and in the area of the groove ( 32 ) is the flange collar ( 36 ) cut off in a circular segment, with a flange end face ( 37 ) and a grip surface ( 38 ) results.

The thrust joint ( 40 ) as a cylinder-piston unit, cf. 4 , includes the housing as a hollow body ( 31 ) with the cylinder bore ( 34 ) and a sliding body guided in it ( 43 ) in the form of a piston. Radially between the pistons ( 43 ) and the cylinder bore ( 34 ) is the parting line ( 44 ), see. Figure 5, which has the function of a construction joint. The parting line ( 44 ) is after the 4 . 5 . 10 and 11 in the lower area by a relief notch ( 50 ) interrupted. The relief notch ( 50 ), in 12 shown enlarged, is, for example, parallel to the center line of the piston ( 43 ) aligned. For example, it has a V-shaped cross-section that extends in the direction of the piston ( 43 ) reduced to a minimum cross section or zero. The cross-sectional change in the relief notch ( 50 ) is only linear over the notch length, for example.

The maximum piston stroke is approximately twice the diameter of the cylinder bore ( 34 ). Extending the piston ( 43 ) is due to the adjacent concealed hinge ( 10 ) prevented.

The piston ( 43 ) limited within the cylinder bore ( 34 ) with the cylinder bottom ( 49 ) a displacement space ( 45 ). In this displacement space ( 45 ) the piston is supported ( 43 ) e.g. via a compression spring ( 47 ) on the cylinder bottom ( 49 ). The piston ( 43 ) includes one in an annular groove ( 52 ) seated sealing element ( 51 ), e.g. an O-ring. The sealing element ( 51 ) contacts the inner wall of the cylinder ( 42 ).

In the piston ( 43 ) there is a central piston bore ( 46 ) in which the compression spring ( 47 ) and into which the displacement pin ( 35 ) protrudes. The radial gap between the piston bore ( 46 ) and the displacement pin ( 35 ) is just big enough that the compression spring ( 47 ) fits in with the necessary game. Between the piston bore ( 46 ) and the ring groove ( 52 ) extends at least one radial bore, for example ( 53 ). In the exemplary embodiment, there are two opposite bores ( 53 ). Through the holes ( 53 ) arrives when the piston is actuated ( 43 ) air quickly into the ring groove ( 52 ) to the sealing element ( 51 ) immediately to the inner wall of the cylinder ( 42 ) to press. Of course there are also other technical solutions for this.

The outside of the case ( 31 ) located end of the piston ( 43 ) is a piston rod thrust piece ( 61 ) trained, cf. 4 , This piston area is, for example, an approximately prismatic plastic body, which over the cylindri cal contour of the piston ( 43 ) projecting flange ( 62 ) having. At this contact flange ( 62 ) closes on the underside of the piston rod thrust piece ( 61 ), see. 4 , a normally aligned, e.g. rectangular sliding surface ( 64 ) on. The contact flange ( 62 ) there is an end face opposite ( 66 ). To the face ( 66 ) closes a concave sliding wedge surface ( 65 ) in the connection area with the end face ( 66 ) encloses an angle of, for example, about 130 °. The top ( 67 ) of the piston rod thrust piece ( 61 ) is parallel to the sliding surface ( 64 ), their length is, for example, about 20% of the length of the sliding surface ( 64 ).

The thrust joint ( 40 ) can also be designed as a friction damper, cf. 6 and 7 , For this purpose, in the housing ( 31 ), which does not have a displacement pin ( 35 ) instead of a cylindrical piston ( 43 ) a friction slide ( 73 ) with, for example, a rectangular cross section in a correspondingly shaped, closed, channel-shaped recess ( 42 ) guided. This friction slide ( 73 ) has a main friction surface ( 74 ) opposite the sliding wedge surface ( 65 ) is arranged. At least in the area of this main friction surface ( 74 ) there is the friction slide ( 73 ) in whole or in part from a material that, in combination with the material of the housing ( 31 ) has a high coefficient of static and sliding friction. Is also used for the sliding wedge surface ( 65 ) uses a material with a high coefficient of static and sliding friction, arises from the contact between this surface ( 65 ) and the adjacent element of the mounting arm ( 11 ) a friction by which the normal force with which the main friction surface ( 74 ) on the friction surface ( 55 ) the recess ( 42 ) acts, enlarged. The latter increases the damping effect of the entire device.

In 7 is the friction slide ( 73 ) shown from the front. Here is in the main friction surface ( 74 ) a groove ( 75 ) milled in which a friction lining ( 76 ) is embedded. The friction lining ( 76 ) is, for example, a glued or vulcanized rubber material. This material can be refined at least in certain areas, for example by halogenation. The side next to the friction lining ( 76 ) protruding base material of the friction slide ( 73 ) serves as a protective bridge ( 77 ) to protect the friction lining ( 76 ) before mechanical overload.

The friction lining is in the retracted state ( 76 ) almost completely in the channel-like recess ( 42 ) of the housing ( 31 ). There it lies almost across the entire surface, so that the friction pairing is not subject to external contamination. When retracting the friction slide ( 73 ) in the recess ( 42 ) displaced air flows over the joint ( 44 ). Possibly. the hollow body ( 31 ) also a vent hole.

In the closure flap ( 5 ), see. 1 , are close to the stop edge ( 8th ) two cutouts ( 6 . 7 ) arranged, for example, of the same depth, which merge into one another. Here, the 8th ) more distant milling ( 6 ) at least largely the shape and area of the bottom surface of the housing ( 31 ) of the damping element ( 30 ). The milling ( 7 ) has, for example, the outline of the frame ( 13 ) of the articulated pot ( 12 ).

When installing the pneumatic damping element ( 30 ) is the one with the sealing element ( 51 ) and the spring element ( 47 ) equipped pistons ( 43 ) in the central hole ( 34 ) inserted. With the damping element working according to the friction principle ( 30 ) there is no sealing element. The damping element ( 30 ) is now in front of the concealed hinge ( 10 ) positioned that the mounting flange ( 16 ), see. 1 , from above on the grip surface ( 38 ) of the housing ( 31 ) rests and at the same time the end face there ( 37 ) contacted. The spring-loaded sliding body protrudes ( 43 . 73 ) with the sliding wedge surface ( 65 ) ahead in the frame ( 13 ) of the concealed hinge ( 10 ) surrounding space. With the face ( 66 ) it is due to the articulated lever ( 27 ) on. Now the damping element ( 30 ) and the frame ( 13 ) together in the cutouts ( 6 ) and (7) the piece of furniture ( 5 ) used. The flange collar ( 36 ) and the mounting flange ( 16 ) lie flat on the surface of the piece of furniture ( 5 ) on. Finally, the Befes mounting flange ( 16 ) with the piece of furniture ( 5 ) using the screws ( 9 ) connected.

Then the flap ( 5 ) together with the concealed hinges ( 10 ) in the body ( 1 ) of the piece of furniture used. After aligning the flap ( 5 ) using the concealed hinges ( 10 ) these are on the body ( 1 ) attached.

With regard to the design of the device, it is also conceivable that the joint pot ( 12 ) of the swivel joint ( 10 ) and the hollow body ( 31 ) of the pushrod ( 40 ) are connected to each other by mechanical connection or gear parts. Both parts ( 12 . 31 ) be designed as a common, housing-like component.

The sliding body ( 43 . 73 ) protrudes 8th with, for example, 80% of its length in the joint pot ( 12 ) into it. The damping element ( 30 ) is now in a straight line in front of the mounting arm ( 11 ) of the concealed hinge ( 10 ). The sliding body ( 43 . 73 ) now touches e.g. with the sliding surface ( 64 ) the floor area ( 14 ) of the articulated pot ( 12 ), see. 2 and 4 , The face ( 66 ) contacts the zone ( 22 ) of the articulated lever ( 27 ), see. 8th , The sliding wedge surface ( 65 ) is freely accessible in the articulated pot ( 12 ). In the thrust joint ( 40 ) is the compression spring ( 47 ) relaxed.

The flap is in the initial state ( 5 ) for example in the open position, cf. 1 , It closes with the front edge ( 2 ) of the body ( 1 ) for example an angle of 90 ° to 110 °. The single concealed hinge ( 10 ) is stretched out in an open end position.

If the flap ( 5 ) closed, the articulated levers ( 26 . 27 ) around the bolts ( 23 . 24 ) and the flap ( 5 ) with the articulated pot ( 12 ) around the hinge pins ( 28 . 29 ). The closure flap ( 5 ) describes a positively guided swivel movement from the open end position towards a closed end position. For example 15 ° before reaching the closed end position, cf. 9 , touches the front end of the mounting arm ( 11 ) with the contact zone ( 21 ) the sliding wedge surface ( 65 ) of the sliding body ( 43 . 73 ). When closing the flap ( 5 ), if necessary supported by a in the pot joint ( 10 ) integrated spiral spring, pushes the mounting arm ( 11 ) the sliding body ( 43 . 73 ) further into the recess ( 34 . 42 ).

The mounting arm ( 11 ) is the actuating element for the damping element ( 30 ) and forms with the sliding wedge surface ( 65 ) of the sliding body ( 43 . 73 ) a sliding wedge gear ( 11 . 65 ).

For example, in the cylinder-piston unit, the piston ( 43 ) in the direction of the displacement space ( 45 ) displaced and displaced the air compressed by the piston movement throttled by the relief notch ( 50 ) into the environment, cf. 10 , This closes the closing movement of the closure ( 5 ) delayed. The displacement pin ( 35 ) reduces the air volume in the displacement space ( 45 ), which leads to a faster response of the damping.

With the friction pairing ( 31 . 73 ) the pivoting movement of the closure flap ( 5 ) due to the friction between the friction lining ( 76 ) and the friction surface ( 55 ) steamed.

The closing movement is slowed down until the speed of the closing flap ( 5 ) is close to zero when the closed end position is reached. The deceleration increases with the sliding along of the transmission partners ( 11 . 65 ) so that the flap ( 5 ) remains free of impact in the end position.

To open the cover flap ( 5 ) raised to the open end position. The mounting arm slides ( 11 ) along the sliding wedge surface ( 65 ) towards the top ( 67 ) of the sliding body ( 43 . 73 ). The compression spring ( 47 ) - or a spring element of another design - in the thrust joint ( 40 ) pushes the sliding body ( 43 . 73 ) in the direction of the joint pot ( 12 ). The sliding body ( 43 . 73 ) moves until it reaches the contact zone ( 22 ) of the articulated lever ( 27 ) is present.

In the exemplary embodiment, the device primarily comprises the actuating element ( 11 ) to actuate the damping element ( 30 ). However, it is also conceivable to additionally or alternatively, for example, the articulated lever ( 27 ) to use for this. The articulated lever ( 27 ) then touches over the contact zone ( 22 ) when closing the sliding wedge surface ( 65 ).

The damping effect of the damping element ( 30 ) is determined by the contour of the sliding wedge surface ( 65 ) certainly. This can, for example, also have a straight, convex or any other continuous contour.

In the exemplary embodiment, the concealed hinge ( 10 ) via a locking device in the form of a spiral spring. Instead of this, for example, a magnet, a tension spring, or another locking device between the pieces of furniture that are pivoted against each other ( 1 . 5 ) be arranged. A version without a locking device is also conceivable.

1

Furniture part, body

2

leading edge

5

Furniture part, flap

6

countersink

7

countersink

8th

stop edge

9

screw

10

Joint, Swivel joint, concealed hinge

11

Actuator; mounting arm

12

joint housing

13

frame

14

the bottom part

15

recess breakthrough

16

mounting flange

17

Recess, opening

19

frame side

21

Contact zone, front end of ( 11 )

22

Contact zone, front end of ( 27 )

23

bolt

24

bolt

26

Articulated lever, Inside

27

Actuator; Articulated lever, outside

28

bolt

29

bolt

30

damping element

31

Hollow body, housing

32

groove

33

channel

34

recess; Location hole, blind hole

35

Verdrängerzapfen

36

flange collar

37

Face of ( 36 )

38

Under Grip

40

Sliding joint, Cylinder-piston unit

42

recess; Canal closed

43

Sliding body, piston,

44

Joint between ( 34 ) and ( 43 )

45

displacement space

46

Piston bore, central

47

Return spring compression spring

49

cylinder base

50

relief notch

51

Sealing element, O-ring

52

ring groove

53

radial bores

55

Friction surface in ( 42 )

61

Piston rod pressure member

62

abutment

64

sliding surface

65

Gear member, ager other; Spline surface

66

face

67

top

73

frictioned, sliding body

74

Hauptreibfläche

75

groove

76

friction lining

77

guard bars

Claims (10)

Device for damping the swiveling movement in a swiveling area limited by two end positions of a piece of furniture piece pivotably mounted relative to a fixed piece of furniture by means of a damping element which is activated at least in a partial swiveling area adjoining an end position, characterized in that the damping element ( 30 ) a thrust joint ( 40 ) comprising at least one in a hollow body ( 31 ) guided sliding body ( 43 . 73 ) exists - that the thrust joint ( 40 ) directly or indirectly on one of the two pieces of furniture pivoted against each other ( 1 . 5 ) is arranged - on which the thrust joint ( 40 ) furniture part not in stock ( 1 . 5 ) at least one actuator ( 11 . 27 ) is arranged, which at least with activated damping with the sliding joint ( 40 ) a gearbox ( 11 . 27 . 65 ) is coupled to form - that with activated damping within the sliding joint ( 40 ) the sliding body ( 43 . 73 ) in the hollow body ( 31 ) a throttled gas is displaced and / or the sliding body ( 43 ) in the hollow body ( 31 ) with great friction in at least one area of the joint joint ( 44 ) slides along, and - that between the hollow body ( 31 ) and the sliding body ( 43 . 73 ) a spring element ( 47 ) is arranged, which at least the sliding body ( 43 . 73 ) against the direction of the damped sliding body movement. Device according to claim 1, characterized in that the transmission is a sliding wedge transmission ( 11 . 27 . 65 ) is. Device according to claim 1, characterized in that the joint as a swivel joint is a concealed hinge ( 10 ) is. Device according to claim 3, characterized in that the concealed hinge ( 10 ) an articulated pot ( 12 ) with one in the swivel plane of the concealed hinge ( 10 ) lying opening ( 15 ) Has. Device according to claim 3, characterized in that the damping element ( 30 ) in the pivoted piece of furniture ( 5 ) in the swivel plane of the pot joint ( 10 ) is arranged, the damper-side gear member ( 65 ) through the opening ( 15 ) in the hinge cup ( 12 ) protrudes. Device according to claim 3, characterized in that the actuating element has the front end ( 22 ) of the mounting arm ( 11 ) of the concealed hinge ( 10 ) is. Device according to claim 1, characterized in that the thrust joint ( 40 ) is a single-acting cylinder-piston unit. Apparatus according to claim 7, characterized in that the hollow body ( 31 ) a central displacement pin ( 35 ) which, with the sliding body retracted ( 43 ) in its central piston bore ( 46 ) protrudes at least almost completely. Device according to claim 1, characterized in that the thrust joint ( 40 ) a friction pair from a hollow body ( 31 ) and a friction slide ( 73 ) is. Apparatus according to claim 9, characterized in that on the friction slide ( 73 ) at least in some areas a friction lining ( 76 ) is arranged.