DE202005022000U1 - Fitting for a corner cupboard, in particular kitchen corner cupboard - Google Patents

Abstract

Fitting for a corner cupboard (11), in particular a kitchen corner cupboard, which can be rotatably supported on the corner cupboard (11) about a pivot axis line (19) and to which a door (15) of the corner cupboard (11) can be fastened such that the door (15) Between a closed position closing a cabinet opening (20) of the corner cabinet (11) and an open position allowing the fitting (13) to be rotated, it can be moved back and forth in the radial direction, with two fitting parts (26, 29) executing a relative movement to one another during the door movement. A damping device (42) is provided for damping the closing movement of the door (15), characterized in that the damping device (42) has damping intensity control means (44) so that the damping intensity increases when the door (15) is closed.

Description

The invention relates to a fitting for a corner cabinet, in particular Kücheneckschrank, which is rotatably storable at the corner cabinet about a Drehachslinie and to which a door of the corner cabinet is fastened, such that the door between a cabinet opening of the corner lock closing position and a twisting of the fitting gestattenden open position in the radial direction is movable back and forth, wherein a damping device for damping the closing movement of the door is provided between two in the door movement relative to each other exporting fitting parts.

A Eckschrankbeschlag this kind is for example from the EP 0 317 737 B1 known, in which a fitting linkage is provided which has two relatively movable in the door movement scissors lever. It is provided a damping cylinder, which is hinged at one end to a scissor lever and the other at the other scissor lever, whereby the relative movement of the two scissors lever is transmitted to the damping cylinder, so that the closing movement of the door is damped.

In corner cabinet fittings, it may be necessary that the door is lowered a little when opening, so that it does not hang when folding on Eckboxinnenperipherie, for example, collides with the bearing cross a pivot column of the fitting. Of course, the door then has to be raised the same distance when closing. The door is closed by means of a return device, in particular in the form of a spring. Consequently, if the door is to be raised a little when closing, this requires additional return energy. On the other hand, just when retracting the door in its closed position d. H. when closing the cabinet opening of the corner cup a low return energy, ie a particularly good damping predominate, so that relatively strong shocks or blows, which can lead to damage to the abutting parts and also represent a noise, can be prevented.

It is therefore an object of the invention to provide a fitting for a corner cabinet of the type mentioned above, which has over conventional Eckschrankbeschlägen better damping properties when closing the door.

This object is achieved by a fitting for a corner cabinet with the features of independent claim 1. Further developments of the invention are shown in the subclaims.

The fitting for a corner cabinet according to the invention is characterized in that the damping device has damping intensity control means, so that the damping intensity increases when closing the door.

The attenuation intensity is therefore at the beginning, if the door is in its open position, relatively low, so that when necessary closing the door, if necessary, necessary upward movement can be handled. At the beginning, therefore, relatively little restoring energy of the restoring means is destroyed by the damping device. The attenuation intensity changes but over the Türschließweg and is larger, so that the closing speed of the door is lower overall, so that a relatively "soft" retraction is made possible in the door closed position. As a result, the already mentioned impacts or shocks between the door and the cabinet opening surrounding the corner cabinet periphery are prevented. The damping device is also suitable for fittings in which no door is lowered when opening the door. Also in this case gives a possible impact-free arrival of the door in the closed position.

In a further development of the invention, the control means may be designed such that the attenuation intensity increases continuously at least over part of the door closing path between the open position and the closed position of the door. The attenuation intensity can thus have a relatively low initial value at the beginning of the door-closing path, which then increases continuously or steadily up to a final value. Alternatively, it is possible for the attenuation intensity to increase in stages, that is to say increase from a relatively low initial intensity in several stages to the final intensity. Also, a combination of a steady increase in attenuation intensity with a gradual increase in attenuation intensity is possible.

Particularly preferably, the control means are designed such that the damping intensity when reaching the closed position of the door reaches its maximum value. This is achieved above all by the fact that the damping intensity increases continuously over the entire door closing path and assumes the greatest value when the door is moved into its closed position.

In a particularly preferred manner, the damping device has at least one damping cylinder, with a cylinder housing and a piston axially displaceably mounted therein, which forms a piston chamber with the cylinder housing, in which there is a fluidic working medium, which acts against the piston when closing the door, said Cylinder housing with one and the piston with the other fitting part is coupled and wherein the control means are formed by a working medium Ausströmeinrichtung having an outflow surface through which the working fluid can escape due to the pressure force of the piston from the piston chamber, wherein the outflow surface is smaller when closing the door. The change in the attenuation intensity can therefore be controlled by the outflow volume of the effluent working medium. The outflow quantity in turn is related to the outflow area, ie the smaller the outflow area, the less working medium can flow out, whereby the resistance to the pressure force of the piston and thus the damping intensity is increased.

As an alternative to the damping cylinder and a friction brake may be provided so that the damping does not take place via the displacement of a fluid working medium, but by means of the increasing over the Türschließweg frictional force. As a fluidic working medium is preferably used air, d. H. the damping cylinder works pneumatically. Alternatively, it is also possible to use other gaseous or hydraulic working media. The advantage of a pneumatically operated damping cylinder, however, is that the working medium, ie preferably the air, can flow out into the open, whereas in another gaseous or a hydraulic working medium, an encapsulated design of the damping cylinder is necessary.

It is possible for the outflow device to have at least one groove extending in the axial direction, which is formed on surfaces of the cylinder housing or of the piston which slide past one another during the closing movement, the outflow surface being formed by the groove cross-section which extends axially in one of the closing movement of the door associated movement direction of the piston tapers. Preferably, the groove is formed on the cylinder housing, wherein the groove cross-section tapers in the retraction direction of the piston in the cylinder. Alternatively, it is possible that a relatively elongated piston is provided, on which the groove is formed, which piston introduces into a cylinder open on one side, wherein the groove cross section tapers from the front end of the piston in the retraction direction towards the rear end. As a result, an ever smaller exhaust surface is thus formed when retracting the piston.

In an alternative, it is possible that the discharge device has a plurality of spaced apart cylinder longitudinally spaced housing openings, which are passable by the piston when closing the door successively, the passages housing openings are ineffective with respect to the outflow of working fluid. At the beginning of the closing movement, working medium can thus flow out through all housing perforations, while then gradually fewer housing openings are available over which working medium flows, so that the outflow area becomes smaller overall.

In a further alternative, the outflow device may have a piston, which tapers away in the direction away from the piston, in particular cone-like extension, which dips into a housing opening formed on the end face of the cylinder housing and forms a frame-like, in particular annular, outflow surface which becomes smaller during the closing movement.

Preferred embodiments of the invention are illustrated in the drawings and will be explained in more detail below. The drawings show:

1 a perspective view of a kitchen cupboard with the fitting according to the invention, wherein the door or the fitting is in the open position,

2 a top view of the kitchen corner cupboard of 1 .

3 a Kücheneckschrank in vertical section along the line III-III in 2 .

4 a horizontal section through the kitchen corner cupboard, wherein the door or the fitting is in the closed position,

5 a horizontal section through the kitchen corner cabinet according to the line VV in 3 with the door or fitting in the open position,

6 an enlarged view of the detail X from 5 .

7 a first embodiment of a damping device of the fitting according to the invention in longitudinal section ( 7B ) and in cross section ( 7A ) along the line VII-VII of 7B .

8th A second embodiment of a damping device in longitudinal section ( 8B ) and in cross section ( 8A ) along the line VIII-VIII in 8B .

9 A third embodiment of a damping device in longitudinal section ( 9B ) and in cross section ( 9A ) along the line IX-IX in 9B and

10 A fourth embodiment of a damping device in longitudinal section ( 10B ) and in cross-section ( 10A ) along the line XX in 10B ,

11 a fifth embodiment of a damping device in longitudinal section ( 11B ) and in cross section ( 11A ) along the line XI-XI in 11B ,

The corner cupboard 11 a fitted kitchen contains a carousel 12 That of a corner cabinet fitting 13 , at least one shelf 14 and a door 15 is formed, wherein the at least one shelf 14 and the door 15 from the corner cupboard fitting 13 being held. Preferably, the door 15 from two separate door leaves 15a . 15b formed, which are relatively movable when opened in the manner described in more detail below. Alternatively it is possible to have two door leaves 15a . 15b provide that do not change their relative position to each other when opening, ie in particular always aligned at right angles to each other and are driven in this angular position and radially inward into the open position.

The corner cupboard fitting 13 has one in the use position, ie in the corner cabinet 11 built-in state, vertically oriented column 16 on, the top of the example of a worktop formed cabinet cover 17 and at the bottom of the cabinet 18 is stored. As exemplified in 3 shown, the column is the central, to a Drehachslinie 19 coaxial rotary column 16 educated. Alternatively, it is possible to use a U-shaped column, which could also be referred to as a carousel frame, wherein here horizontally extending bearing arms rotatably on the cabinet bottom or on the cabinet cover 17 . 18 are stored.

The corner cupboard 11 also has an overhanging cabinet opening 20 on, one of the two already mentioned door wings 15a . 15b formed and thus associated with two-leaf door. An alternative may include a door 15 be provided, which consists of a single door element, which extends across the cabinet opening 20 , this closing in the closed position, extends. To open the door element is then pressed radially inward. Like from the 4 and 5 shows, the two doors are 15a . 15b in the closed position, when the cabinet opening 20 close, approximately at right angles to each other. Each wing forms 15a . 15b with the adjacent side wall 21a . 21b a right angle, with one door wing 15a , the front of the sidewall 21a and the other door 15b the front of the other side wall 21b overlaps.

The shelves 14 do not extend over a full circumference. Rather, they have a suitably over a smaller angle than 90 ° going, sector-shaped cutout on the two door wings 15a . 15b is arranged. That of the two door wings 15a . 15b formed Türeck protrudes into this section.

To make the inside of the cabinet accessible, the two door leaves become 15a . 15b to open inwards in the in 5 shown open position pressed. Here, the two lead separate door leaves 15a . 15b one with respect to the bisecting line 23 of the Türecks mirror-image movement, resulting from a the angle between the two door wings 15a . 15b decreasing Einklappbewegung and this superimposed retraction movement along the bisectors 23 composed. During this movement, the door wings get 15a . 15b further into the neckline, that, at least as far as it is for the dipping of the door wings 15a . 15b is required, is also free of other parts. Due to this Einklappbewegung with superimposed retraction come the two leaves 15a . 15b from the side walls 21a . 21b of the corner cupboard 11 free. This will get the door wings 15a . 15b to the inside and are simultaneously lowered in the manner described in more detail below, that the carousel in the corner cabinet 11 can turn without the door leaves 15a . 15b on the side walls 21a . 21b stripes.

In this way, any point of the shelves 14 forward to the cabinet opening 20 be turned so that everywhere items can be set or removed.

When closing the door 15 reverse movements. Get the carousel 12 after his twisting back into the 5 excellent turning position, in which the two wings 15a . 15b located at the cabinet opening, the door leaves can 15a . 15b move outwards into the closed position. This is an angle between the door leaves 15a . 15b Enlarging fold-out movement with superimposed extension movement in the direction of the bisector 23 with simultaneous upward movement of the two door leaves 15a . 15b ,

The corner cupboard fitting 13 has one at the spin column 16 arranged carrying device 24 for holding the two door leaves 15a . 15b on. This carrying device 24 contains an upper support element 25 and a lower support element 26 arranged in column longitudinal direction at a distance from each other and at the rotary column 16 are fixed. Here are the two support elements 25 . 26 each below one of the shelves 14 , At the bottom of the lower support element 26 is a control linkage 27 arranged, with which the door leaf movement is controlled when opening and closing. This control linkage 27 includes one on the lower support member 26 on a pivot axis 28 pivotally mounted pivoting lever 29 , which seen in the embodiment of the door on the other side of the turn column 16 is arranged. The swivel lever 29 extends approximately transversely to the bisector 23 , To the swivel lever 29 is a leader 30 stored, whose function will be described. In the embodiment, the guiding role 30 on the bisector 23 arranged. Coaxial to the guide roller 30 are on the pivot lever 29 two control levers 31 . 32 hinged at one end, located on either side of the pivot column 16 extend and each one of the door leaves 15a . 15b assigned.

The leadership 30 and the control levers 31 . 32 are consecutively at one to the rotary column 16 parallel axle bolts 33 stored, the pivot lever 29 protrudes upward. The two control levers 31 . 32 are with their swivel lever 29 opposite end each hinged with a fastening part 34 . 35 connected to the inside of the relevant door leaf 15a . 15b is fixed. The fastening parts 34 . 35 are also each pivotable about an axis of rotation on the support element 25 stored, there are the joint axes of the control lever 31 . 32 in each case at a distance from the corresponding axes of rotation of the fastening parts 34 . 35 , Press the two leaves 15a . 15b inside, pivot the fasteners 34 . 35 about their axes of rotation, with the two joint axes of the control lever 31 . 32 be taken along, so that the axle 33 shifted in the embodiment to the rear. In this way, by means of the two control levers 31 . 32 a mirror image of the bisector 23 expiring movement of the door leaves 15a . 15b reached. At the upper support element 25 are the fastening parts 34 . 35 hinged corresponding hardware over which the door leaves 15a . 15b be held by the support element. At the upper support element 25 eliminates a corresponding control linkage 27 ,

The control linkage 27 is a leadership facility 36 assigned when turning the corner fitting 13 in the corner cabinet the control linkage 27 in its the open position of the door leaves 15a . 15b appropriate location holds and upon arrival of the door 15a . 15b after twisting the carousel 12 at the cabinet opening the control linkage 27 releases the closing movement again.

The already mentioned leadership role 30 forms part of this guide device 36 , The management device 36 also contains a to the rotary column 16 concentric, circular circumferential guide surface 37 Standing at the corner cupboard 11 , in the embodiment at the top of the cabinet floor 18 is arranged. This is the guide surface 37 in the embodiment of the peripheral surface of a cabinet bottom 18 attached disk body 38 educated. The guide surface 37 is at the level of leadership 30 arranged. She is at the point where the leadership role 30 is interrupted in the closed position of the door. At this point extends from the scope of the disk body 38 outgoing guide recess 39 in the disk body 38 whose width is about the diameter of the guide roller 30 matches, making them into the guide slot 39 can intervene.

In the closed position, the leading role emerges 30 in the guide recess 39 a so that they and thus the corner cupboard fitting 13 is set in the circumferential direction. Press the two leaves 15a . 15b inside, the leadership comes 30 from the guide recess, so that the corner cabinet fitting 13 can be turned. At the control linkage 27 engages this on the closed position loading coil spring 40 at. This coil spring 40 holds the leadership role 30 when turning the carousel 12 against the guide surface 37 , Get the leadership role 30 to the guide recess 39 , it is by the force of the coil spring 40 moved into the guide recess, the control lever 31 . 32 over the axle bolt 33 taken away and the door leaves 15a . 15b thus be transferred to the closed position. The coil spring 40 is one end with a Federverstellteil 41 connected, so that by adjusting the Federverstellteils the spring length and thus on the pivot lever 29 acting spring force can be changed.

The corner cupboard fitting 13 also has a damping device 42 for damping the closing movement of the door 15 , wherein the damping device 42 is arranged between two in the door movement relative to each other exporting fitting parts. These fittings can, for example, as in the 4 to 6 shown, on the one hand, the lower support member 26 and on the other hand, the pivot lever 29 be.

Would not damper 42 be provided, if the lead 30 in the area of the guide recess 39 passes, this due to the restoring force of the coil spring 40 abruptly into the guide recess 39 dive, making, over the two control levers 31 . 32 controlled, the two wings 15a . 15b abruptly snap back from its open position to its closed position. This would be the two doors 15a . 15b to the front sides of their associated side walls 21a . 21b abut, which could lead to damage. To prevent this, the damping device 42 provided, whereby the result of the restoring force of the coil spring 40 applied closing movement is damped.

As already mentioned, the two doors lead 15a . 15b in the embodiment of the fitting illustrated here by way of example, a folding movement with superimposed retraction movement and simultaneously being moved downwards. This downward movement is necessary so that the door does not collapse with the bearing cross 43 , about which the turning column 16 on the cabinet cover 17 is rotatably mounted, collide. The doors 15a . 15b so swing under this camp cross. This is achieved by the fact that on the upper support element 25 a ramp, not shown, is provided, via which the two door leaves are led downwards.

During the closing movement of the two door leaves 15a . 15b Accordingly, it is necessary, then, when extending radially outwards, to simultaneously guide it upwards up the ramp. The coil spring 40 is therefore designed so that this slope can be overcome. Accordingly, the damping device should 42 not too much of the return energy of the coil spring 40 Destroy so that this slope can be managed despite damping device.

On the other hand, it is just before reaching the closed position of the two leaves 15a . 15b necessary that the closing speed is relatively slow, in order to hit the side walls 21a . 21b to prevent. Accordingly, the damping device should 42 So dampen here relatively strong. In conventional damping devices 42 with constant damping, these two opposing requirements are not satisfactorily fulfilled. Therefore, a damping device 42 provided, the damping intensity control means 44 (hereinafter referred to as control means 44 called), so that the damping intensity when closing the door 15a . 15b increases.

The damping device 42 has a damping cylinder for this purpose 45 , in turn, a cylinder housing 46 and a piston axially displaceably mounted therein 47 owns, with the cylinder housing 46 a piston chamber 48 forms, in which there is a fluidic working medium, in particular air, when closing the door leaf 15a . 15b against the piston 47 acts. The damping cylinder 45 is at one end about a pivot axis 49 swiveling on the swivel lever 29 stored, while on the other hand on the piston 47 a piston rod 50 is arranged, in turn, via a further pivot axis 51 pivotable on the lower support element 26 is stored. When pivoting the pivot lever 29 become the two pivot axes 49 . 51 so moved away from each other, creating pistons 47 and piston rod 50 from the cylinder housing 46 extend if the two leaves 15a . 15b be opened. Accordingly, when closing the two doors 15a . 15b the two pivot axes 49 . 51 moved towards each other, causing pistons 47 and piston rod 50 back into the cylinder housing 46 Retract, where in the piston chamber 48 located working fluid in the form of air via the control means in the form of a working medium discharge device 52 (called outflow device hereinafter) is displaced. The discharge device 52 in turn has an outflow surface when closing the door 15a . 15b becomes smaller, whereby less and less air can flow, so that the total resistance to the pressure force of the piston 47 and thus the attenuation intensity is increased.

The 7 to 10 now show various embodiments of Ausströmeinrichtungen 52 ,

In 7 is a first embodiment of a discharge device 52 shown, the one in the axial direction of the cylinder housing 46 running groove 53 whose groove cross section is in the closing movement of the door leaf 15a . 15b associated retraction of the piston 47 rejuvenated. This taper can, for example, by running side by side 54a . 54b the groove 53 take place, ie the groove width is smaller. Alternatively, it is possible that the groove bottom 55 increases, ie the groove depth is lower. The outflow surface is thus formed here by the groove cross-section, always at the rear edge of the piston in the retraction direction 47 , At this point, the air from the piston chamber preferably flows into the open air. Now drives the piston 47 further into the cylinder housing 46 a, as the result of the decreasing groove cross-section and the outflow area continues to change. Thereby, the attenuation intensity is increased in the manner described above.

8th shows a second embodiment of the discharge 52 in which a plurality of spaced apart in the cylinder longitudinal direction housing openings 56 are provided. When closing the door, these housing openings 56 from the piston 47 happens in succession, with the passages passed housing 56 are ineffective with respect to the outflow of working medium. At the beginning of the closing movement is thus working fluid through all housing openings 56 displaced by, while then gradually less housing perforations 56 Are "active".

9 shows a third embodiment of the discharge 52 in which a piston trained, in the direction of the piston 47 path tapered, in particular cone-shaped extension 57 is provided, which in one at the end face of the cylinder housing 46 trained housing opening 58 dips and forms an annular outflow surface. When retracting the piston 47 So always comes an average larger section of the extension 47 in the housing opening 58 so that the annular outflow surface is getting smaller and smaller, which in turn can flow less and less working fluid. This also leads to an increase in the attenuation intensity.

In 10 is a fourth embodiment of the discharge 52 represented, which is virtually a counterpart to the first embodiment, with the difference that the groove 53 not on the cylinder housing 46 but on the piston 47 is formed, in turn, as a relatively elongated piston 47 is formed, and therefore may also be referred to as a plunger. The cylinder housing 46 is open at one end, so that the piston 47 during the closing movement of the door leaves 15a . 15b ever further into the cylinder housing 46 dips. The groove cross-section of the piston 47 trained groove 53 It also tapers and is at the front end of the piston in the retraction direction 47 relatively large and gets smaller and smaller towards the back end. The outflow area is here at the rear edge of the cylinder housing 46 , so that gradually a smaller and smaller groove cross-section arrives at this rear edge, whereby less and less working fluid can escape. This increases the damping intensity.

Finally, in 11 A fifth embodiment of the outflow device 52 shown. Here are at least two, in particular three at equal angular intervals aligned grooves 53a . 53b . 53c on the cylinder housing 46 provided, which are different in length in the cylinder longitudinal direction. For the sake of clarity, is in 11 the piston is not shown. However, it can be seen that initially working medium over all grooves 53a . 53b . 53c flows out when retracting the piston but then first the shortest of the grooves 53a completely passed by the piston and thus becomes ineffective Ausströmtechnisch. It now flows only working medium over the remaining, preferably two grooves 53b . 53c which increases the attenuation intensity. This increase takes place after elimination of the "ineffective" groove 53a by leaps and bounds. Further retraction of the piston then causes the elimination of the next shorter groove 53b , so that the attenuation intensity increases again.

In an alternative, the embodiments one and five can be combined with each other, ie there are multiple grooves 53a . 53b . 53c provided with different lengths and in addition, the groove cross section changes at least one groove 53a . 53b . 53c in the closing movement of the door leaves 15a . 15b associated retraction of the piston.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• EP 0317737 B1 [0002]

Claims (13)

Fitting for a corner cabinet ( 11 ), in particular Kücheneckschrank, the corner cabinet ( 11 ) about a rotary axis line ( 19 ) is rotatably storable and on which a door ( 15 ) of the corner cupboard ( 11 ) is attachable, such that the door ( 15 ) between a cabinet opening ( 20 ) of the corner cupboard ( 11 ) closing position and a twisting of the fitting ( 13 ) permitting open position in the radial direction is movable back and forth, wherein between two in the door movement relative to each other exporting fitting parts ( 26 . 29 ) a damping device ( 42 ) for damping the closing movement of the door ( 15 ), characterized in that the damping device ( 42 ) Damping intensity control means ( 44 ), so that the damping intensity when closing the door ( 15 ) increases. Fitting according to claim 1, characterized in that the control means ( 44 ) are formed such that the attenuation intensity continuously and / or gradually increases at least over part of the lying between the open position and closed position of the door door closing path. Fitting according to claim 2, characterized in that the control means ( 44 ) are formed such that the damping intensity when reaching the closed position of the door ( 15 ) reaches its highest value. Fitting according to one of the preceding claims, characterized in that the damping device ( 42 ) at least one damping cylinder ( 45 ), with a cylinder housing ( 46 ) and a piston axially displaceably mounted therein ( 47 ) connected to the cylinder housing ( 46 ) a piston chamber ( 48 ), in which there is a fluidic working medium which, when closing the door ( 15 ) against the piston ( 47 ), wherein the cylinder housing ( 46 ) with one and the piston ( 47 ) with the other fitting part ( 26 . 29 ) and wherein the control means are formed by a working medium Ausströmeinrichtung having an outflow surface, via which the working medium as a result of the pressure force of the piston ( 47 ) from the piston chamber ( 48 ), wherein the outflow surface when closing the door ( 15 ) gets smaller. Fitting according to claim 4, characterized in that the piston ( 47 ) Component of the discharge device ( 44 ) and the reduction of the outflow area by changing the position of the piston ( 47 ) in the cylinder housing ( 46 ) is achieved. Fitting according to claim 4 or 5, characterized in that the outflow device ( 44 ) at least one, in the axial direction groove ( 53 ), which in each case during the closing movement vorbeigleitenden surfaces of the cylinder housing ( 46 ) or the piston ( 47 ), wherein the outflow surface is formed by the groove cross-section, which is axially in one of the closing movement of the door ( 15 ) associated movement direction of the piston ( 47 ) tapers. Fitting according to claim 6, characterized in that the groove ( 53 ) on the cylinder housing ( 46 ) is formed and the groove cross-section in the retraction direction of the piston ( 47 ) in the cylinder ( 45 ) rejuvenated. Fitting according to claim 6 or 7, characterized in that the groove ( 53 ) by two groove side surfaces ( 54a . 54b ) and a groove bottom ( 55 ) is limited, wherein the taper of the groove cross-section is formed by a decreasing groove width and / or a decreasing groove depth. Fitting according to one of claims 4 to 8, characterized in that a plurality of grooves ( 53a . 53b . 53c ) are provided with different groove lengths in the cylinder longitudinal direction. Fitting according to claim 4 or 5, characterized in that the outflow device ( 44 ) a plurality of cylinder in the longitudinal direction spaced from each other arranged housing openings ( 46 ), which when closing the door ( 15 ) are successively passable by the piston, wherein the passed housing openings ( 56 ) are ineffective with respect to the outflow of working medium. Fitting according to claim 4 or 5, characterized in that the outflow device ( 44 ) one on the piston ( 47 ) trained in the direction of the piston ( 47 ) away tapering, in particular cone-like extension ( 57 ), which in one at the end face of the cylinder housing ( 46 ) formed housing opening ( 48 ) and one during the closing movement of the door ( 15 ) becomes smaller frame-like, in particular annular outflow surface forms. Fitting according to claim 11, characterized in that the extension ( 57 ) in one piece with the piston ( 47 ) is trained. Fitting according to one of the preceding claims, characterized in that air is provided as the working medium.

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