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BACKGROUND 
     The invention relates to a carriage for a displaceable separation element, a separation element held by at least one such carriage and a device with at least one such separation element. 
     In order to separate or form areas or to close off room, furniture or window openings, walls, sliding elements, doors or blinds provided with a wooden or glass panel (hereinafter referred to as separation elements) are often used, which are fixed to carriages displaceable along a rail. 
     A device for displaceable separation elements is known from [1], EP 1916372 A1, by means of which a panel, in particular a glass panel, is fixed in a mounting profile of a frame element and can be adjusted in height. 
     Document [2], Product Catalogue of HAWA AG, Sliding Fittings 2000, discloses a fitting for sliding wardrobe doors that are held so as to be displaceable to the fore of the front of a wardrobe. Each of the sliding wardrobe doors is held on the upper side by at least one first L-shaped mounting profile, which is connected to a carriage, which rolls on a running rail arranged on the upper side of the wardrobe. In order that the sliding door remains held in vertical position it is also held on the lower side by a second L-shaped mounting profile, which holds a guide device, which engages in a guide rail arranged on the lower side of the wardrobe. The first limb of the L-shaped mounting profiles is thus connected to the sliding wardrobe door and the second limb to the carriage/the guide device. 
     SUMMARY 
     The carriage and the guide device are arranged in this application above/below the wardrobe, whereby various problems can result. It is often necessary for the height of the separation element to be adjusted at the time of installation or at a later point in time. For this purpose elements that are displaceable in height are provided for example on the fitting and can be adjusted by the installer. This results in corresponding resources being required during the production of the fitting and difficult manipulations during the adjustment. For example the separation element must be released from the rails, after which each fitting must be newly incorporated. Subsequently the separation element is to be hung in the rails again and it is to be checked whether the required height adjustment has been achieved. 
     It is further to be taken into consideration that the carriage cooperates with a running rail and that the guide device/at least one running wheel provided thereon cooperates with a guide rail. A change to the fitting on the upper side of the separation element can necessitate a change to the fitting on the lower side of the separation element. 
     It is thereby to be taken into consideration that the simultaneous engagement of the carriage and the guide device into the running rail or the guide rail simultaneously ensures that the separation element cannot become independently released from the rails. In the adjustment of the sliding fittings it is therefore to be ensured that the decoupling prevention mechanism is not raised or blocked. 
     On account of the arrangement of the carriage above and the guide device below the wardrobe there are also only very small assembly spaces, in which the carriage, the running rail, the guide device and the guide rail are received. It is thereby to be taken into consideration that the assembly space is selected to be sufficiently large in order that not only the device parts can be received therein but also the necessary manipulations can be carried out. Through the choice of a larger assembly area on the other hand the space available for the wardrobe is reduced. 
     In order to deal with this problem the running rail is mounted in practice from time to time on the wardrobe before the latter is fitted into the installation location. However, this brings with it a particular disadvantage if a plurality of wardrobe elements are provided, which are to be equipped with individual parts of the running rail or guide rail. After the assembly of a multi-part wardrobe and the multi-part running rail there are normally discrepancies at the abutment points of the parts of the running rail joined together. The end elements of the running rail parts are therefore mostly connected to each other using coupling elements in order that misalignments at the abutment points are reduced. Even in case of these additional resources being used, misalignments cannot normally be completely avoided at the abutment points, meaning that the resulting running properties of the carriages are not optimal and their operating lifetime is reduced. 
     The space problem described is further intensified by the use of buffer devices, which are to be connected to the running rail and which normally take up a relatively large amount of space. 
     A further disadvantage is that the guide devices preassembled on the lower side of the separation elements, in case of careless mounting of the separation elements, in particular in case a separation element tilts to the side, are exposed to greater forces and damaged. 
     It is thus an object of the present invention to eliminate the above-described disadvantages of the known devices. 
     In particular a carriage for a displaceable separation element, a separation element held by at least one such carriage and a device with at least one such separation element are to be created that are not encumbered with the disadvantages described. 
     The carriage and the separation element are to allow necessary adjustments to be carried out precisely and with minimal resources. In addition the carriage is to have a minimal space requirement. The device with the at least one separation element is to be designed in such a way that only limited assembly space is required. Insofar as a plurality of wardrobe elements is used, interference-causing abutment points on the running rail are to be avoided. 
     This object is achieved with a carriage, a separation element provided with at least one such carriage and a device that have the features indicated in claims  1 ,  10  and  12 . Advantageous embodiments of the invention are indicated in further claims. 
     The carriage provided to hold a displaceable separation element comprises a carriage body provided with at least two running wheels, which carriage body is connected to a carrier profile serving to carry the separation element. 
     According to the invention the threaded shank of an adjusting screw is rotationally held in the carriage body, said adjusting screw comprising below the screw head a flange ring, which supports a flange element provided in the carrier profile, which flange element comprises an opening, through which the screw head is passed. 
     By rotating the adjusting screw, the head of which is detected by means of a tool, the carrier profile can thus be optionally adjusted in height. The separation element can thus be horizontally orientated. 
     In a preferred embodiment at least one tool channel is provided in the carrier profile, which preferably comprises a U-shaped profile with two side parts and a middle part. A conventional tool, e.g. a Phillips screwdriver, can be introduced into said tool channel and used to rotate the head of the adjusting screw. 
     In this connection a coupling chamber is provided in the carrier profile, preferably in the middle part of the U-shaped profile, within which coupling chamber the screw head is arranged and connected to a toothed disk, with which the tool is to cooperate. In order that the tool can be introduced into the coupling chamber and coupled with the toothed disk, the tool channel is provided, which preferably extends parallel to the longitudinal axis of the middle part from one end as far as the coupling chamber or as far as the other end of the carrier profile. In the latter embodiment the tool can thus be introduced from both sides through the carrier profile into the coupling chamber in order to rotate the adjusting screw. In principle the tool channel can be orientated as desired. The orientation along the longitudinal axis of the middle part and thus parallel to the running rail has on the other hand the advantage that the tool can be introduced along the running rail on the front side into the carrier profile. The separation element can thus be adjusted without problems after its installation without the panel having to be removed or the separation element having to be released from the running rail. 
     It is particularly advantageous that a conventional tool, namely a Phillips screwdriver, can be used for the adjustment. The axes of the Phillips screwdriver and of the tool channel on the one hand and the axis of the adjusting screw on the other hand are thereby perpendicular to each other. In order that the head of the adjusting screw can still be detected and rotated, it is connected to the toothed disk, which comprises a peripherally arranged annular gear with teeth, which are arranged on the upper or lower edge of the toothed disk perpendicular to the tool channel and thus perpendicular to the head of the Phillips screwdriver, which likewise comprises toothing. The toothing on the Phillips screwdriver thus engages in the annular gear of the toothed disk and rotates the latter around the axis of the adjusting screw. 
     The toothed disk preferably comprises a multi-edge opening, which serves to receive the screw head. By pressing and flattening the screw head a fixed connection between the screw head and the toothed disk can be produced. 
     A cylindrical spacing element is preferably provided between the flange ring and the screw head or the toothed disk. Said spacing element serves as a stop for the toothed head of the Phillips screwdriver in order to hold it in the correct engagement with the annular gear of the toothed disk. At the same time the toothed disk is held by the spacing element at the height of the screw head. 
     After the adjustment of the adjusting screw the latter is preferably to be fixed. For this purpose a securing ring is provided in a preferred embodiment within the coupling chamber provided in the carrier profile. Said securing ring comprises at least one holding eyelet projecting into the tool channel and at least one elastically held holding tooth, which engages into the annular gear of the toothed disk. The securing ring is thereby held so that it cannot rotate within the coupling chamber. The holding tooth can be pressed, with a force effect through the tool, on the other hand tooth for tooth to the side, so that the toothed disk can be rotated as needed. Upon discontinuation of the force effect through the tool the tooth engages in the annular gear again and holds the toothed disk and thus the adjusting screw in position without the possibility of rotation. 
     The adjusting screw can be connected in various ways to the carriage body. In a simple embodiment a threaded bore is provided in the carriage body, in which threaded bore the adjusting screw is rotationally held. 
     In a particularly preferred embodiment a bearing opening is provided on the other hand in the carriage body, within which bearing opening a carrier bolt is rotationally mounted. The carrier bolt comprises a threaded bore extending perpendicular to the bolt axis. Within said threaded bore the threaded shank of the adjusting screw is rotationally held, said adjusting screw being introduced through an access opening into the bearing opening. The access opening thereby has a larger diameter than the threaded shank of the adjusting screw so that said adjusting screw can be inclined at an acute angle forward and back while the carrier bolt rotates. Through these measures the carrier profile can also be inclined forward and back, so that said carrier profile can be adapted to a corresponding inclination of the separation element, while both running wheels of the carriage lie with the same force against the running rail. An optimal running behaviour is also then guaranteed if the position of the separation element has not been set in an ideal manner. 
     In a further preferred embodiment the carrier bolt comprises a guide nose on both sides, said guide noses being guided into guide slots of the first and the second side part of the carrier profile. 
     In a further embodiment the carriage body comprises a coupling element, which can cooperate with a holding buffer element, which serves for the smooth reception of the moving separation element and the holding of the separation element after it has come to a standstill. 
     In a further preferred embodiment a decoupling prevention mechanism connected to the body of the carriage is provided, said decoupling prevention mechanism securing the coupling of the carriage with the running rail even in case unexpected forces arise. In known systems this securing is achieved through the guide device provided at the lower end of the separation element, as already described. Through this type of securing, however, additional resources are required during the adjustment of the separation element, as an additional factor is to be taken into consideration. In addition a correspondingly designed guide device is needed. 
     In the inventive decoupling prevention mechanism an elastic holding bracket is provided on the carriage body, which elastic holding bracket downwardly projects over said carriage body and can engage with foot elements around the head element of the associated running rail on both sides and hold it loosely. In order that the elastic holding bracket does not become independently released from the coupling element and from the head of the running rail, a U-profile-shaped fixing frame is pushed over the elastic holding bracket and locked. The elastic holding bracket is thus held in position by the rigid fixing frame, after which the carriage is securely coupled with the running rail. 
     Through the inventive decoupling prevention mechanism the carriage is thus directly coupled with the running rail, on which it travels. Having regard to this decoupling prevention mechanism autonomously provided on the carriage, any consideration of these problems in the design of the guide device or the adjustment of the separation element is superfluous. Unexpected force effects can no longer lead to derailing of the carriage when using an inventive decoupling prevention mechanism. 
     The carriage can be connected in various ways to the panel of a separation element. For example a mounting plate is provided on the carrier profile, which mounting plate can be directly screwed to the panel, in particular a wooden panel. 
     Alternatively the carrier profile can also be connected to a first limb of a, for example L-shaped, mounting profile, of which the second limb is connected to the panel. The upper side of the carrier profile is preferably provided with a detent element, into which the first limb of the mounting profile can engage at an appropriate point. In this way the distance of the panel from the carriage can be selected in stages. Furthermore, running rails and guide rails can be used with a plurality of rail elements, along which a plurality of separation elements can be displaced parallel to each other. 
     On the lower side of the panel a guide device is preferably mounted in a releasable manner and it comprises an angular body with a vertical wing and a horizontal wing. In this connection a mounting channel is provided on the vertical wing on the angle outer side. A mounting strip secured in a fixed or releasable manner to the panel can be introduced into the mounting channel and be held there in a releasable way preferably by means of a locking element. On the angle inner side the horizontal wing comprises at least one guide roller, which can cooperate with the guide rail or a rolling surface. 
     In order that the running rail and/or the guide rail can be mounted with minimal space requirements, at least one adapter plate is used according to the invention, which is mounted on the body, e.g. wardrobe, which is to be closed with at least one separation element. In spite of the additional space requirement for the adapter plate this has the advantage that only a minimal space requirement is needed for the assembly of the running rail. The running rail can thereby be guided via a plurality of parts of the body, e.g. via a plurality of parts of a wardrobe, which are constructed sequentially. It is not therefore necessary for a segment of the running rail or guide rail to be provided for each wardrobe part and for these to be precisely mounted and adapted to each other, so that misalignments are avoided at the abutment points. It is merely necessary for an adapter plate to be provided on each wardrobe element and for example to be orientated using a gauge. Discrepancies in the arrangement are automatically compensated in the embodiment of the adapter plate described below. 
     In this preferred embodiment the running rail and/or the guide rail comprise a rail plate, said rail plates being provided on the upper side with at least one rail element serving for the rolling of the running wheels or guide rollers and on the lower side with at least one mounting bracket extending parallel to the rail element. The mounting bracket provided on the rail plate thereby cooperates with a corresponding counter bracket, which is provided on the adapter plate. At least one mounting strip with at least one threaded bore, in which a counter screw can be held and rotated against the mounting bracket and the counter bracket, is thereby provided on the adapter plate. The mounting bracket is thus pressed so far against the counter bracket until they at least partially lie against each other. Erroneous orientation of the adapter plate, in which the mounting bracket and counter bracket do not lie planar against each other, therefore remains without consequence. Abutment points are completely avoided so that optimal travel properties result over the whole running path, in which preferably a one-piece running rail is placed. In order to fix the running rail even more strongly the counter screws can also be provided on the front side with a cup point. 
     In preferred applications the separation element is held in a displaceable manner to the fore of the front of the body, in particular a body formed by building parts or a furniture item, on the upper side of which the running rail is provided and on the lower side of which the guide rail is provided. The advantages of the inventive solution are, however, also effective in other applications. 
     As mentioned, a holding buffer element is preferably used, which serves to receive and hold the separation element. Such holding buffer elements are typically screwed within a, for example U-profile-shaped, rail profile. Insofar as a suitable rail profile is lacking, the holding buffer element must be connected to the wardrobe or masonry. In turn a correspondingly large amount of space is thereby required. The connection with the masonry or parts of a wardrobe is on the other hand undesirable as these high-resource interventions can necessitate subsequent renovation works if changes to the installation are carried out. 
     According to the invention a holding buffer element is provided, which is bent from a sheet metal element in one piece to form a U-profile, on the lower side of which U-profile flat pressure plates are inclined against each other, which pressure plates are pressed on both sides on preferably flattened sides of the head element of the associated rail element of the running rail and preferably supported on the running rail plate. The side parts of the U profile, which each comprise a receiving element facing the carriage, are pressed by means of at least one mounting screw against each other and thus against the rail element. The flattened sides of the head element and the flat pressure plates can thereby comprise detent elements corresponding to each other, which engage in each other in a shape-locking way. In this way it is ensured that the holding buffer element is held in a stable way. A further result of the inclination of the pressure plates is that they are pressed downwards against the rail plate during mounting of the holding buffer element. It is thus ensured that the holding buffer element cannot deviate downwards or upwards. 
     The two cooperating receiving elements are preferably connected to each other with a preload screw and formed as plate springs in such a way that the coupling element provided on the body of the carriage can be moved and held therein. The moving-in separation element is thus elastically received and subsequently held securely. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention is described in greater detail below by reference to drawings, in which: 
         FIG. 1  shows an inventive separation element  1  provided with a glass panel  10 , said separation element  1  being held so as to be displaceable by means of an inventive carriage  2  and a guide device  5  in front of a wardrobe, along a running rail  3  mounted thereon and a guide rail  6 ; 
         FIG. 2  two separation elements  1 A,  1 B with carriages  2 A,  2 B guided by a running rail  3  and inventive guide devices  5 , which are assembled in a releasable manner on the lower side of the separation elements  1 A,  1 B; 
         FIG. 3  one of the inventive guide devices  5  of  FIG. 2  during assembly or dismantling; 
         FIG. 4  the first inventive carriage  2 A adjustable in height with a decoupling prevention mechanism  28  and with a carrier profile  24 A, which is directly connected to the panel  10  of the associated separation element  1 A of  FIG. 2 ; 
         FIG. 5  the height-adjustable second inventive carriage  2 B with a decoupling prevention mechanism  28  and with a carrier profile  24 B, which is connected by means of a mounting profile  12  to the associated separation element  1 B of  FIG. 2 ; 
         FIG. 6  the carriage  2 B of  FIG. 4  with upwardly travelled carrier profile  24 B; 
         FIG. 7  the carriage  2 B of  FIG. 4  with downwardly travelled carrier profile  24 B; 
         FIG. 8  parts of the adjusting device in the first and second carriage  2 A,  2 B, namely an adjusting screw  23 , of which the screw head  234  is connected to a toothed disk  26 , and a securing ring  25 , which prevents the independent rotation of the adjusting screw  23 ; 
         FIG. 9  a running rail  3 , which is placed from the front on an adapter plate  7  and fixed by means of a counter screw  75  accessible from the front side; 
         FIG. 10  the first inventive carriage  2 A of  FIG. 4 , the running rail  3 , the adapter plate  7  and a clamping profile  81  arranged there-between, said clamping profile  81  serving to hold a cover strip  82 ; 
         FIG. 11  a guide rail  6 , which is placed from the front on an adapter plate  7  and fixed by means of a counter screw  75  accessible from the front side; 
         FIG. 12  the carriages  2 A,  2 B provided with the decoupling prevention mechanism  28 , said carriages  2 A,  2 B being guided on rail elements  31 ,  32 , parallel to each other, of the running rail  3  held by the adapter plate  7 , and also an inventive holding buffer element  9  mounted on a rail element  31 ; 
         FIG. 13  a development drawing of the one-piece holding buffer element  9  of  FIG. 12  punched out of sheet metal; and 
         FIG. 14  the finished holding buffer element  9  punched out of the sheet metal and also the appropriately formed head element  311  of the rail element  31 , on which the holding buffer element  9  is placed. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  shows an inventive separation element  1 , which comprises a glass panel  10 , on the upper side  1 T and lower side  1 B of which identical installation profiles  11  are mounted in such a way that the front face of the glass panel  10  lies free. The device parts are thus arranged on the mounting side  1  MS of the glass panel  10  lying opposite the front face, said glass panel  10  facing a body to be closed off  4 , e.g. a wardrobe. Shown schematically are an upper and a lower wardrobe element  4 A/ 4 B and walls  4 C of the wardrobe  4 . On the upper side of the upper wardrobe element  4 A and the lower side of the lower wardrobe element  4 B adapter plates  7  are mounted, by means of which a running rail  3  provided with two rail elements  31 ,  32  and a guide rail  6  provided with two rail elements  61 ,  62  are held. 
     On one of the rail elements  32  of the running rail  3  a carriage  2 B is guided, which comprises a carriage body  21 , which carries running wheels  22  fixed to wheel axles, which carriage body  21  is provided on the front side with a coupling element  213  and which carriage body  21  carries a carrier profile  24 B by means of a carrier bolt  29 . The carrier profile  24 B is connected via a mounting profile  12  to the associated installation profile  11 , which is mounted on the upper side of the panel  10 . The mounting profile  12  comprises a mounting limb  122  connected to the installation profile  11  and a receiving limb  121  screwed to the carriage  2 B. 
     The guide device  5 , which is connected via a further mounting profile  12  to the installation profile  11  fixed to the lower side of the panel  10 , comprises a guide wheel  52 , which is guided in a rail element or guide channel  62  of the guide rail  6 . 
     Each of the two installation profiles  11  is provided with a holding device  13 , between which a rope or cable, preferably a wire cable  16 , is tensioned in order to compensate the forces and moments acting on the separation element  1 . 
       FIG. 1  further shows that the carrier profile  24 B is preferably completely crossed by a tool channel  2424 , the axis x of said tool channel  2424  extending parallel to the running rail  3 . As explained in greater detail below, a screwdriver can be introduced into the tool channel  2424  in order to adjust the height of the carrier profile  24 B and thus the height and inclination of the panel  10 . The carriage  24 B is thereby easily accessible from the side, meaning that the adjustments can be carried out rapidly without the separation element  1  or the panel  10  having to be dismantled. Due to the lateral access to the carriage  24 B, furthermore, hardly any additional space is necessary for introduction of the tool. 
     As further clarified, the two running wheels  22  of the carriage  2 B lie constantly with the same force on the associated rail element  32  of the running rail  3 , while the carrier profile  24 B is held by the carrier bolt  29  so as to be rotatable about the axis z. An erroneous adjustment or a negligible inclination of the separation element  1 B does not therefore lead to an asymmetrical or double load of one of the running wheels  22 , which could thereby fail prematurely. 
       FIG. 1  further shows that the installation profiles  11  and the mounting limbs  122  of the mounting profiles  12  comprise profile parts corresponding to each other, which can be displaced in each other. The panel  10  can therefore firstly be provided with the installation profiles  11 , after which the mounting limbs  12  can be mounted at an appropriate time. 
       FIG. 2  shows two separation elements  1 A,  1 B, each having two inventive first and second carriages  2 A,  2 B guided by separate rail elements  31 ,  32  of a running rail  3 . The first carriages  2 A are directly screwed to the panel  10  of the first separation element  1 A, meaning that no mounting profile  12  is necessary. The second carriages  2 B are connected to the panel by means of mounting profiles  12 . Insofar as the two separation elements  1 A,  1 B are displaced against each other the mounting profiles  12  engage over the first carriages  2 A. The two separation elements  1 A,  1 B can thus be pushed past each other as desired. The panels  10 , overlapping each other, of the separation elements  1 A,  1 B are guided in front of the running rail  3 , whereby only a limited space is needed above the running rail  3 . 
       FIG. 2  further shows inventive guide devices  5 , which are mounted in a releasable manner on the lower side of the separation elements  1 A,  1 B. 
       FIG. 3  shows an inventive guide device  5  in case of assembly or dismantling. The guide device  5  comprises an angular body  51  with a vertical wing  512  and a horizontal wing  511 . The vertical wing  512  is provided on the angle outer side with a mounting channel  54 , into which a mounting strip  55  fixed to the panel  10  can be introduced. The mounting strip  55  comprises openings  551  for receiving mounting screws and a locking element  552  provided with a tongue  5521  and holding ribs  5522 . By means of said locking element  552  the mounting strip  55  introduced into the mounting channel  54  is held there. By means of the spring-elastic tongue  5521 , which lies against the panel  10 , the locking element  552  is pressed against the vertical wing  512 , which is overlapped by the holding ribs  5522 . In order to release the guide device  5  the locking element  552  must be pressed against the resistance of the tongue  5521  so far against the panel  10  until the holding ribs  5522  are completely released from the vertical wing  512 . The guide device  5  can thus be installed and dismantled with a hand grip in order to prevent damage in case the separation element  1 A;  1 B is released from the running rail  3 . The horizontal wing  511  comprises on the angle inner side a guide roller  53 , which can be guided within the guide rail  6 , as shown in  FIG. 1  with a different embodiment of the guide device  5 . 
     First and second guide devices  5 A,  5 B are thereby provided on the two separation elements  1 A,  1 B of  FIG. 2 . Said first and second guide devices  5 A,  5 B differ in the dimensions of the vertical wing  512  and the horizontal wing  511  in such a way that the horizontal wing  512  of the second guide device  53  lies below the horizontal wing  511  of the first guide device  5 A and the guide rollers  52  can engage at a desired mutual distance into the rail elements  61 ,  62 , running parallel to each other, of the guide rail  6  (see  FIG. 11 ). 
       FIG. 4  shows the first inventive carriage  2 A, adjustable in height, with a carrier profile  24 A, which can be directly connected to the panel  10  of the associated separation element  1 A of  FIG. 2 . 
       FIG. 5  shows the second inventive carriage  23  of  FIG. 1 , also adjustable in height, with the carrier profile  24 B, which can be connected by means of the mounting profile  12  to the associated separation element  1 B of  FIG. 2 . 
     The two carriages  2 A and  23  differ only through the design of the respective carrier profile  24 A and  24 B, which is correspondingly adapted for the corresponding mounting on the associated separation element  1 A or  1 B. The first carrier profile  24 A comprises a mounting plate  249 , which can be screwed directly to the panel  10  of the first separation element  1 A, in which mounting plate  249  bores  2491  are provided for passing through mounting screws  2492  (see also  FIG. 12 ). If appropriate the bores  2491  also run through the carriage body  21  or a part thereof. The second carrier profile  24 B comprises on its upper side threaded bores  2426 , into which mounting screws  246  (see  FIG. 1 ) serving to hold the mounting profile  12  can be introduced. The second carrier profile  24 B is further provided on its upper side with a catch  2445 , which allows the receiving limb  2  of the mounting profile  12 , provided with mounting slots  1211 , to be displaced laterally in stages and to be held in a shape locking way in the desired position. 
     The further, preferably identical parts of the two carriages  2 A and  2 B are explained in detail below by reference to  FIGS. 4 and 5 . 
     The two carriages  2 A and  2 B comprise a carriage body  21 , which can preferably be produced cost-effectively for example by means of an extrusion process and only requires limited machining after the extrusion and cutting process. The carriage body  21  serving as a chassis or wheel box comprises two wheel chambers  217 , in which running wheels  22  are rotationally mounted by means of shafts  221  held in bores  216 . 
     Between the wheel chambers in the carriage body  21  an access opening  215  is provided, which extends perpendicular to the running rail  3  and through which an adjusting screw  23  can be introduced within the carriage body  21  into a bearing opening  211 , in which a carrier bolt  29  provided with a threaded bore  291  is rotationally held. The adjusting screw  23  can thus be pivoted about the axis y of the carrier bolt  29 , which extends horizontally and perpendicular to the running rail  3 , at an acute angle forwards and backwards, said angle being determined by the diameter of the access opening  215 . 
     In a less advantageous, simpler embodiment the access opening  25  is on the other hand a simple threaded bore, within which the adjusting screw can merely be adjusted in height but cannot be laterally deflected. 
     The adjusting screw  23  comprises, below its screw head  234 , a flange ring  232 , which supports a flange element  2422  provided in the carrier profile  24 A;  24 B. Said flange element  2422  comprises an opening  2423 , through which the screw head  234  is guided. 
     Each of the carrier profiles  24 A,  24 B comprises a U-shaped profile with two side parts  241 A,  241 B and a middle part  242 . In the middle part  242  a coupling chamber  2421  is provided, into which a tool channel  2424  extending parallel to the longitudinal axis x of the middle part  242  runs. Said tool channel  2424  runs through the middle part  242  from one end as far as the coupling chamber  2421 , but preferably as far as the other end, as shown in  FIG. 4 . The head of a Phillips screwdriver W can thus be introduced from both front sides of the carrier profile  24 A/ 24 B through the tool channel  2424  into the coupling chamber  2421 , within which the screw head  234  is arranged. 
     After the screw head  234  has been introduced into the coupling chamber  2421  during the assembly of the carriage  2 A;  2 B, said screw head  234  is connected to a toothed disk  26 , which comprises a peripherally arranged annular gear  261 , which is orientated on the lower edge of the toothed disk  26  perpendicular to the tool channel  2424 . The toothed disk  26  comprises a hexagonal opening  262  serving to receive the screw head  234 , said hexagonal opening  262  serving to receive the hexagonal screw head  234 . The axial securing of the toothed disk  26  is carried out preferably by pressing and flattening the projection of the screw head  234 , after which the toothed disk  26  is held in a shape-locking way and can no longer be released from the screw head  234 . 
     The toothed disk  26  is thus held on the upper side of the flange element  2422  defining the coupling chamber  242  and the flange ring  232  is held on the lower side of the flange element  2422  so that the rotationally held adjusting screw  23  can no longer be released from the carrier profile  24 A,  24 B. 
     Between the flange ring  232  and the screw head  234  or the placed-on toothed disk  26  a spacing element  233  is provided, which also projects into the coupling chamber  2421  and serves there as a stop for the toothed head of the Phillips screwdriver W in order to hold it in optimal engagement with the annular gear  261  of the toothed disk  26 . The head of the Phillips screwdriver W can thus be introduced through the tool channel  2424  into the coupling chamber  2421  until it lies against the spacing element  233 . In this position the required engagement of the teeth of the tool head in the annular gear  261  of the toothed disk  26  takes place simultaneously. In order that the rotation of the adjusting screw  23  can take place particularly easily the spacing element  233  preferably also serves as a bearing shaft, which is mounted within the opening  2423  in the flange element  2422  so as to preferably be practically clearance free. 
     A securing ring  25  is provided within the coupling chamber  2421  as security against independent rotation of the adjusting screw  23 . Said securing ring  25 , preferably made of plastic, comprises two holding eyelets  252  projecting into the tool channels  2424  and two elastically held holding teeth  251 , which engage in the annular gear  261  of the toothed disk  26 , as shown in  FIG. 8 . The securing ring  25  is thus held between the flange element  2423  and the toothed disk  26  so that it cannot deviate from the coupling chamber  2421 . Through the holding eyelets  252 , through which the screwdriver W can be guided, the securing ring  25  is additionally secured against rotation. Upon rotation of the screwdriver W the toothed disk is thus rotated, whereby the holding teeth  251  are displaced in stages out of the annular gear  261 , but after the removal of the screwdriver W they engage therein again. A once-selected adjustment of the carriage  2 A;  2 B is thus retained. 
     Guide slots  2411  are further provided in the side parts  241 A,  241 B provided on the carrier profiles  24 A and  24 B. Guide noses  292  are guided and held so that they cannot be rotated in said guide slots  2411 , said guide noses  292  being provided on both sides on the carrier bolt  29 . The guide noses  292  can move in the guide slots  2411  upwards and downwards and are rotated together with the associated carrier profile  24 A;  24 B so that the axes of the carrier profile  24 A;  24 B and the adjusting screw  23  are constantly perpendicular to each other. 
     The carriage body  21  further comprises on the front side a coupling element  213 , which can cooperate with the holding buffer element  6  shown in  FIG. 14 . 
     The carriage body  21  further serves to receive a decoupling prevention mechanism  28  and is provided for this purpose with recesses  214  on each side. The decoupling prevention mechanism  28  comprises a U-profile-shaped elastic holding bracket  281 , which is placed on the carriage body  21  in the manner of a rider and held in the recesses  214  provided in said carriage body  21 . The holding bracket  281  comprises at the lower ends foot elements  2811  orientated against each other, whereby said foot elements  2811  can engage downwardly over the coupling element  213  and can surround the head  311  of the associated rail element  31  of the running rail  3  on both sides. Insofar as the carriage  2 A;  2 B is raised, however, the unsecured foot elements  2811  are pressed on both sides and the carriage  2 A;  2 B can be released from the running rail  3 . In order to prevent this, a rigid fixing frame  282  with a U-shaped-profile made of metal or plastic is pushed over the holding bracket  281  so that it is held and fixed on both sides. 
     In order that the fixing frame  282  is not released from the holding bracket  281 , said holding bracket  281  comprises connecting cams  2812 , which are guided in connecting slots  2821  provided in the side parts of the fixing frame  282 . The side parts of the fixing frame  282  are further provided with securing flanges  2822 , which overlap the holding bracket  281  to the front and to the rear. The fixing frame  282  is thus connected in a shape locking way to the holding bracket  281  and can only be released from this if it is manually drawn upwards, following which the foot elements  2811  of the holding bracket  281  regain their mobility. 
       FIG. 6  shows the carriage  2 B of  FIG. 4  with upwardly travelled carrier profile  24 B. 
       FIG. 7  shows the carriage  2 B of  FIG. 4  with downwardly travelled carrier profile  24 B. 
     As illustrated in  FIGS. 6 and 7 , the head of the screwdriver W can be introduced on both sides through the tool channel  2424  into the coupling chamber  2241  in order to rotate the adjusting screw  23 . Subject to the coupling element  213  the carriages  2 A,  2 B are thus designed symmetrically and can thus be mounted in any orientation on each side of the separation element  1 A;  1 B. Access by means of the tool W is therefore constantly guaranteed. 
       FIG. 8  shows the above-described parts of the adjusting device in the first and second carriage  2 A,  2 B, namely the adjusting screw  23 , the toothed disk  26  and the securing ring  25 , whereby the latter prevents independent rotation of the adjusting screw  23 . It is further shown that the screwdriver W introduced through the tool channel  2424  into the coupling chamber  2421  is held in position through the spacing element  233  provided below the screw head  234 . It is further shown schematically that the screwdriver W is introduced through the holding eyelet  252  of the securing ring  25  into the coupling chamber  2421 . 
       FIG. 9  shows the running rail  3  and the adapter plate  7  of  FIG. 1 . The running rail  3  comprises a rail plate  33 , on the upper side of which two rail elements  31 ,  32  serving for the rolling of the running wheels  22  are provided and on the lower side of which two mounting brackets  34  extending parallel to the rail elements  31 ,  32  are provided. The two mounting brackets  34  correspond to two counter brackets  74 , which are provided on the adapter plate  7 , which is mounted on the upper side of a wardrobe  4  by means of screws  76 , which are guided through openings  731 . The running rail  3  can thus be guided from the front or the front side of the wardrobe  4  over the adapter plate  7  and be displaced backwards until the mounting brackets  34  and the counter brackets  74  engage in each other. Consequently counter screws  75 , which are held in threaded bores  711  of mounting strips  71  connected to the adapter plate  7 , are rotated against the mounting bracket  34 . By means of these counter screws  75 , which can likewise be actuated from the front side of the wardrobe  4 , the mounting brackets  34  of the running rail  3  are fixed and said running rail  3  is thus held stable. The one-part or multi-part wardrobe  4 , which can be of any breadth, can thereby be equipped with several adaptable plates  7 , which are orientated as precisely as possible. 
     The inventive installation system has a relatively high tolerance in relation to erroneous positioning. Slight rotations and displacements of individual adapter plates  7  relative to the ideal position are compensated without problems insofar as the mounting brackets  34  and the counter brackets  74  do not have to lie planar against each other and the stable assembly of the running rail  3  is still guaranteed. As the running rail  3  can only be put in place after installation of the wardrobe  4  said running rail  3  is preferably placed as one element over the whole length, meaning that abutment points are avoided. It can further be seen from  FIG. 9  that the distance d between the upper edge of the wardrobe  4  and the ceiling  40  is minimal and can be selected only in consideration of the size of the carriages  2 A,  2 B, as shown in  FIG. 10 . 
       FIG. 10  shows the carriage  2 A of  FIG. 4  and also the running rail  3  and the adapter plate  7  of  FIG. 9 , whereby these are mounted in the aforementioned manner. It is shown that the adapter plate  7  only takes up limited space in relation to the carriage  2 A. After mounting of the adapter plate  7  and the running rail  3  a clamping profile  81  is provided therebetween, which serves to hold a cover strip  82 . As seen from the front side of the wardrobe  4 , the adapter plate  7  and the running rail  3  thus form one unit and do not cause aesthetic interference. 
       FIG. 11  shows a guide rail  6 , which is placed from the front on an adapter plate  7  mounted on the lower side of the wardrobe  4  and is fixed by means of a counter screw  75  accessible from the front side. The guide rail  6  comprises a rail plate  63 , on the upper side of which two guide channels/rail elements  61 ,  62  serving for rolling of the guide rollers  52  are provided, and on the lower side of which two mounting brackets  64  extending parallel to the rail elements  61 ,  62  are provided. The two mounting brackets  64  correspond to two counter brackets  74  provided on the adapter plate. The guide rail  6  can thus be mounted in the same way and with the same advantages as the running rail  3 . 
       FIG. 12  shows the carriages  2 A,  2 B provided with the decoupling prevention mechanism  28 . Said carriages  2 A,  2 B are guided on rail elements  31 ,  32 , extending parallel to each other, of the running rail  3  held by the adapter plate  7 . It can be clearly seen in the carriage  2 B that the foot elements  2811  of the holding bracket  281  held by the fixing frame  282  engage around the head element of the associated rail element  32 , so that the carriage  2 B cannot be released from the running rail  3 . It is further shown that the running rail  3  is pressed by means of a counter screw  75  against the adapter plate  7  so that the mounting brackets  34  and the counter brackets  74  are held displaced in each other. Between the adapter plate  7  and the running rail  3  the clamping profile  81  is held, which for its part holds the cover strip  82 . It is further shown that the mounting plate  249  of the carriage  2 A is screwed to the wooden panel  10  of the separation element  1 A. The mounting screw  2492  provided for this purpose is preferably passed through the whole carrier profile  24 B. Furthermore the tool channels  2424  provided in the carrier profiles  24 A,  24 B of the carriages  2 A,  2 B are shown, into which the Phillips screwdriver W can be introduced in order to adjust the height of the carrier profiles  24 A,  24 B. 
       FIG. 12  further shows a holding buffer element  9  placed on the rail element  31 . Said holding buffer element  9  comprises a U-shaped profile, of which the side elements are pressed together by means of a mounting screw  91  and a nut  92  in such a way that the two end elements of the U-shaped profile, which form pressure plates  904 A,  904 B, are pressed against the head  311  of the associated rail element  31 . The holding buffer element  9  is thus directly connected to the rail element  31  and thus requires only minimal space. 
       FIG. 13  shows a development drawing  90  of the one-piece holding buffer element  9  of  FIG. 12 , which has been punched out of sheet metal. 
       FIG. 14  shows the holding buffer element  9  punched out of the sheet metal and finished and also the appropriately formed head element  311  of the rail element  31 , which comprises on both sides flattened zones  3111 , against which the pressure plates  904 A,  904 B lie planar (see  FIG. 12 ). 
     As shown in  FIG. 14 , the holding buffer element  9  is formed to a U-shaped profile. The development drawing thus comprises different zones, which are bent against each other after being punched out of sheet metal. The zones  903 A and  903 B relate to the side parts of the U-shaped profile, which are provided with bores  9031  for guiding through mounting screws  91  and with unilaterally cut out and bent counter elements  9032 , which serve to hold nuts  92 . The zone  905  relates to the middle part of the U-shaped profile or the buffer element back. The zones  904 A and  904 B connecting to the side parts  903 A and  903 B relate to the above-mentioned pressure plates. The zones  901 A and  901 B relate to the receiving elements serving to receive the carriage  2 A,  2 B. Provided in said receiving elements are bores  9011 , through which a preload screw  910  can be passed, by means of which the two receiving elements  901 A,  901 B can be pressed and pre-tensioned against each other. 
       FIG. 14  shows the holding buffer element  9 , which has been formed through bending the individual zones  901 A,  901 B,  903 A,  903 B;  904 A,  904 B and  905  and provided with said bores  9011 ,  9031  and punched-out elements  9032 . The punched-out sheet metal element has been bent to form a one-piece U-shaped profile, on the lower side of which the flat pressure plates  904 A,  904 B are inclined against each other. After assembly said pressure plates  904 A,  904 B are pressed on both sides on the flattened sides  3111  of the head element  311  of the associated rail element  31  of the running rail  3  and preferably supported on the running rail plate  3 . The side parts  903 A,  903 B of the U-shaped profile, which each comprise a tongue-shaped receiving element  901 A,  90 B facing the carriage  2 A,  28 , are pressed by means of two mounting screws  91  against each other and thus against the rail element  31 . As a result the pressure plates  904 A,  904 B lie, after mounting, stable on the flattened sides  3111  of the head element  31 . Furthermore, a result of the inclination of the pressure plates  904 A,  904 B is that the latter are pressed downwards, during mounting of the holding buffer element  9 , against the rail plate  3 . It is thereby ensured that the holding buffer element  9  cannot deviate downwards or upwards. 
     The two cooperating receiving elements  901 A,  901 B, which are connected to each other with the preload screw  910 , are formed as plate springs in such a way that the coupling element  213  provided on the body  21  of the carriage  2 A;  2 B can move and be held therein. The separation element  1 A,  1 B is thus elastically received and subsequently held. 
     LITERATURE 
     
         
         [1] EP 1916372 A1 
         [2] Product catalogue of HAWA AG, Sliding Fittings 2000 
       
    
     LIST OF REFERENCE NUMERALS 
     
         
           1  Separation element 
           10  Panel, in particular a glass or wooden panel 
           11  Installation profile 
           12  L-shaped mounting profile 
           121  Receiving limb of the mounting profile  12   
           1211  Mounting slot for receiving the mounting screw  246   
           122  Mounting limb of the mounting profile  12   
           13  Holding device 
           16  Connection element, cable 
           2  Carriage 
           2 A First carriage, directly screwed to the panel  10   
           2 B Second carriage, connected via the mounting profile  12   
           21  Carriage body, body of the carriage  2   
           211  Bearing opening for the carrier bolt  29   
           213  Coupling element, corresponding to buffer element  9   
           214  Recess for receiving the decoupling prevention mechanism  28   
           215  Access opening, possibly threaded bore 
           216  Bore in the carriage body  21  for the wheel axles  221   
           217  Wheel chamber 
           22  Running wheel of the carriage  2   
           221  Shaft, wheel axle 
           23  Adjusting screw 
           231  Threaded shank of the adjusting screw  23   
           232  Flange ring on the adjusting screw  23   
           233  Spacing cylinder on the adjusting screw  23   
           234  Head of the adjusting screw  23   
           24 A Carrier profile of the first carriage  2 A 
           24 B Carrier profile of the second carriage  2 B 
           241 A/B Side parts of the carrier profile  24 A/ 24 B 
           2411  Guide slot in the side part  24 A/ 24 B 
           242  Middle part of the carrier profile  24 A/ 24 B 
           2421  Coupling chamber in the middle part  242   
           2422  Flange element with opening  2423   
           2423  Opening in the flange element  2422   
           2424  Tool channel in the middle part  242   
           2425  catch on the upper side of the middle part  242   
           2426  Threaded bore in the middle part  242   
           246  Mounting screws 
           249  Mounting plate on the carrier profile  24 A 
           2492  Mounting screw, possibly running through the carrier profile 
           25  Securing ring 
           251  Holding tooth on the securing ring  25   
           252  Holding eyelet 
           26  Toothed disk 
           261  Annular gear on the toothed disk  26   
           262  Multi-side opening for receiving the screw head  234   
           28  Decoupling prevention mechanism 
           281  Holding bracket 
           2811  Foot elements on the holding bracket  281   
           2812  Connecting cams on the holding bracket  281   
           282  Fixing frame 
           2821  Connecting slot on the fixing frame  282   
           2822  Securing flange on the fixing frame  282   
           29  Carrier bolt 
           291  Threaded bore for receiving the adjusting screw  23   
           292  Guide nose (s) on the carrier bolt  29   
           3  Running rail 
           31  First rail element of the running rail  3   
           311  Head element of the first rail element  31   
           3111  Flat sides of the head element  311   
           32  Second rail element of the running rail  3   
           321  Head element of the second rail element  32   
           33  Running rail plate 
           34  Mounting bracket on the rail plate  33   
           4  Body, building or furniture body, wardrobe 
           40  Ceiling, building body above the wardrobe  4   
           4 A Upper element of the body  4   
           4 B Lower element of the body  4   
           4 C Wall of the installation body  4   
           5  Guide device 
           51  Body of the guide device  5   
           511  Horizontal wing of the guide device  5   
           512  Vertical wing of the guide device  5   
           52  Guide roller on the horizontal wing  511   
           54  Mounting channel in the vertical wing  512   
           55  Mounting strip 
           551  Bores for receiving mounting screws 
           552  Locking element, clip 
           5521  Tongue 
           5522  Holding ribs 
           553  Holding flange 
           6  Guide rail 
           61  Rail element/first guide channel 
           52  Rail element/second guide channel 
           63  Guide rail plate 
           64  Mounting bracket on the guide rail plate  63   
           7  Adapter plate 
           71  Mounting strip 
           711  Threaded bore in the mounting strip  71   
           73  Openings in the adapter plate  7   
           74  Counter bracket 
           75  Counter screw 
           76  Mounting screws 
           81  Clamping profile 
           82  Cover strip 
           9  Holding buffer element 
           90  Buffer element body, bent 
           90  Development drawing of the buffer element body  90   
           901 A/B Receiving elements 
           9011  Bores in the receiving elements  901 A/ 901 B 
           903 A/B Buffer element sides 
           9031  Bores for passing through the mounting screws  91   
           9032  Counter elements for holding the nuts  92   
           904 A/B Pressure plates 
           905  Buffer element back 
           91  Mounting screws 
           910  Preload screw 
           92  Nuts

Summary:
The carriage provided to hold a displaceable separation element comprises a carriage body provided with at least two running wheels, which carriage body is connected to a carrier profile, which serves to carry the separation element. According to the invention the threaded shank of an adjusting screw is rotationally held in the carriage body, which adjusting screw comprises below the screw head a flange ring, which supports a flange element provided in the carrier profile, which flange element comprises an opening, through which the screw head is guided. By rotating the adjusting screw the carrier profile can thus be optionally adjusted in height. In a preferred embodiment a tool channel is provided in the carrier profile, into which tool channel a conventional tool can be introduced.