DE20002568U1 - Arrangement for holding shelves on a vertical rotating column - Google Patents

Description

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Applicant: Dr. Günter Widmer PA1115DE-GM A-6844 Altach (Austria) Subject: Arrangement for holding shelves on a

vertical rotating column

Description:

The invention relates to an arrangement for the rotationally fixed and height-fixable mounting of shelves on a vertical rotating column, wherein a contact surface for horizontal support on the rotating column is formed in the center of the shelf and opposite this contact surface a support part can be inserted which can be pressed onto the rotating column from the other side and brought into operative connection with the shelf.

A corner cupboard with a rotating column and shelves is already known (EP-B-0610.878), in which a shelf is placed on a support element in the form of a bolt on the support column, whereupon a clamping part is then inserted from the top of the shelf, which rests on the support column directly or via a support part. A clamping effect is achieved by contact surfaces between the shelf and the clamping element or between the support part and the clamping element, which are aligned at an acute angle to the longitudinal direction of the rotating column. On the one hand, assembly is complicated, since the relatively large and bulky shelf must first be pre-assembled, and on the other hand, unless additional clamping elements acting by screws or spring force are used, there are no solid connections that can even be released in the event of vibrations.

A type of clamping wedge with contact surfaces aligned at an acute angle to a support column is also provided for a support device with continuously adjustable arms (EP-A-02101834). After being driven in, this clamping wedge must be fixed in position using a screw that engages in a slotted hole so that the support device can be held in position relative to the support column.

The present invention therefore has for its object to provide an arrangement of the type mentioned at the outset, with which simple handling is possible and by means of which a fixing of shelves can be achieved without additional clamping screws or screw-in or insertable clamping elements.

According to the invention, this is achieved by the support part being pre-assembled on the rotating column and the shelf being able to be placed on the pre-assembled support part from above, as seen in the axial direction of the rotating column, whereby support surfaces are provided on the support part and on sections of the shelf which can be brought into operative connection with one another and are aligned at an acute angle to the central axis of the rotating column, thus reducing the contact force of the contact surface of the shelf on the rotating column and

the contact pressure of the support part on the rotating column is determined by the weight of the shelf and, if applicable, by the weight of the material resting on the shelf.

With these measures according to the invention, simply attaching the support part, which is easy to handle, to the rotating column is sufficient to then hold and fix a shelf securely by placing it on top. In contrast to the known designs, the support part is now first brought up to the rotating column, also known as the standpipe, and held there in some way so that it can no longer slide down along the rotating column. Without any additional measures, the shelf only needs to be placed on top. Due to the support surfaces being aligned at an acute angle to the central axis of the rotating column, when the shelf is placed on top, the rotating column is clamped between the contact surface of the shelf and the contact surface of the support part. However, this clamping force is constantly maintained and even constantly improved by the weight of the shelf itself and also by the goods placed on the shelf during use. In addition to simple assembly, this also offers the advantage that no subsequent screw connections have to be made or clamping elements have to be inserted and secured.

A particularly advantageous design is that the support part is designed as a body that can be inserted along the underside of the shelf and that faces away from the contact surface on the rotating column, has two support surfaces that are arranged at a distance from one another and interact with support surfaces formed on the insertion opening on the shelf. This creates the possibility of the support part being designed so that it is ultimately almost completely covered by the shelf construction, with no fastening points being visible from the outside, in particular because there are no clamping parts that can be fixed from above after the shelf has been put in place. By simply putting the shelf in place, it is therefore held in place and fixed in position. Since clamping is possible over a relatively large length of the rotating column, the shelf can be held optimally despite the screw and clamping elements not being required here.

In order to ensure a good and tip-proof attachment to the rotating column, it is suggested that the contact surfaces on both the shelf and the support part have a cylindrical section shape that is at least approximately adapted to the radius of the rotating column. This means that the rotating column can be gripped over a large circumferential area in the clamped state.

A special design provides that the support part can be supported on the supporting elements of the rotating column and/or by means of fastening elements in relation to the rotating column or can be fixed in relation to it. All that is required is to fix the support part to the rotating column, whereby a type of support is also sufficient so that the support part cannot be pushed downwards. In such a case, the support part can be easily placed on top.

However, the arrangement of fastening elements also makes it easy to install the handy and small support part, as handling, assembly and accessibility are simple.

In this context, an arrangement is advantageous in which nose-like projecting retaining elements with approximately semicircular or U-shaped cross-section recesses are formed on the support part in the area of its lower end, which overlap a cross bolt fixed to the pivoting column when the support part is in position against the pivoting column. In this way, a simple and effective assembly of the support part is possible and, above all, secure support of the shelf that is then placed on top is ensured. This is an effective measure for being able to accommodate heavy shelves and the heavy goods lying on them.

Another advantageous embodiment is that stiffening webs are formed opposite the recesses of the nose-like projecting holding elements, which are approximately semicircular or U-shaped in cross section. This allows the area of the support part that bears the entire load to be sufficiently reinforced.

If it is also provided that the freely projecting ends of the stiffening webs are provided with tabs that face each other and thus, when the support part is in use, face the rotating column, then pre-assembly is made much easier. The support part can be placed on the supporting elements on the rotating column using the retaining elements, with the tabs proposed here pressing against the surface of the rotating column in a spring-loaded manner and thus ensuring sufficient pre-fixing of the support part. After the shelf has been pushed on, no additional fastening of the support part is required to prevent it from tipping over.

In this context, it is advantageous if the support part, in its operating position, in conjunction with the tabs directed against the rotating column, covers an area of more than 180° of the rotating column. This enables optimal pre-assembly of the support part, as it is securely fixed in position to prevent it from tipping away from the rotating column.

Within the scope of the invention, a variant of the arrangement is also possible in which the support part has a locking bolt as a fastening element that can be adjusted transversely to the mounting position of the same on the rotating column and that engages in locking holes or notches formed on the rotating column. In this way, too, the fastening required for pre-assembly is possible. Sufficient support for the shelf in the direction of the base of the rotating column must only be ensured. With such a construction, the support part can even be fixed in both directions along the rotating column.

A further design variant provides that the support part as a fastening element has a transverse to the mounting position dffsselbgn ¹ aR^aqrOfeh column; e*ij§geft$nt$;e «Sfhraujje· atff, which in

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threaded holes at different distances on the rotating column. In this way, the support part can be fixed directly to the rotating column.

Another design variant provides for plate parts that are fixed or fixable to the rotating column as the supporting element for the support part. This means that only one type of support for the support part is required, since a holding force on the rotating column - albeit a small one - is sufficient for pre-assembly to place the shelf from above. If corresponding plate parts are already present, for example due to brackets for door angles mounted on the rotating column, no additional supporting elements or additional fastening means are required for the support part.

Further features of the invention and particular advantages are explained in more detail in the following description with reference to the drawings. They show:

Fig. 1 is an exploded oblique view of a rotating column, two shelves and two support parts before their mutual assembly;

Fig. 2 to 4 different views of the support part;

Fig. 5 is an oblique view of the center section of a shelf viewed from below.

Fig. 6 is an exploded view of a rotating column, two shelves and two support parts as well as additional support elements for holding upper and lower door angles in a corner cabinet before their mutual assembly.

An arrangement according to the invention with a rotating column, support parts and shelves is often used in corner cupboards, advantageously in kitchen corner cupboards, in order to enable access to goods stored on the shelves even in otherwise inaccessible places. By rotating the shelves around the axis of the rotating column, all compartments are accessible from a front opening in the corner cupboard. The measures according to the invention can also be used in other structural designs, for example in free-standing, open racks in which the goods or, for example, books or files are stored on rotating shelves.

In the arrangement shown in the drawings, shelves 2 are attached to a vertical rotating column 1 in a manner that is resistant to rotation and can be fixed in height. In the center of the shelf 2, a contact surface 3 is formed for horizontal support on the rotating column 1. Opposite this contact surface 3, a support part 4 can be inserted that can be pressed onto the rotating column 1 from the other side and brought into operative connection with the shelf 2. The support part 4 can be pre-assembled on the rotating column 1. The shelf 2 can then be placed on the pre-assembled support part from above, as seen in the axial direction of the rotating column 1. vyerdejn·. .··. : : .:

Support surfaces 5 and 6 are provided on the support part 4 and on sections of the shelf 2 and can be brought into operative connection with one another and are aligned at an acute angle to the central axis of the rotating column 1. This results in a contact force of the contact surface 3 of the shelf 2 on the rotating column 1 and a contact force of the support part 4 on the rotating column 1, which is determined by the weight of the shelf 2 and, if applicable, by the weight of the material resting on the shelf 2.

The support part 4 is designed as a body that can be inserted guided on the underside of the shelf 2. Facing away from the contact surface 7 on the rotating column 1, the support part 4 has two support surfaces 5 arranged at a distance from one another, which interact with the support surfaces 6 formed on the insertion opening on the shelf 2. The contact surfaces 3 and 7 on both the shelf 2 and the support part 4 have a cylindrical section-shaped shape that is at least approximately adapted to the radius of the rotating column 1. Within the scope of the invention, a polygonal cross-section would also be possible. It should only be ensured that both the contact surfaces 3 and the contact surfaces 7 are supported on the rotating column via at least two areas that run parallel to the rotating column, albeit in a linear shape.

For pre-assembly and for fixing to support the shelf that is then placed on top, an active connection must be established between the rotating column and the support part, since this must be secured against displacement at least in the direction of the base of the rotating column. As can be seen from Fig. 1, support elements 8 in the form of bolts penetrating the rotating column 1 are advantageously provided. The support parts 4 can be supported on these support elements 8 relative to the rotating column 1 and thus fixed relative to it.

In order to be able to interact with these support elements 8, a special structural design of the support part 4 is required. In the area of its lower end, nose-like projecting retaining elements 9 with approximately semicircular or U-shaped recesses 10 in cross section are formed on the support part 4. When the support part 4 is in the position resting on the rotating column 1, the retaining elements 9 overlap the support element 8, which is designed as a cross bolt and is fixed to the rotating column.

In order to make these projecting holding elements 9 particularly stable, they have stiffening webs 11 opposite the recesses 10. At the freely projecting ends of the stiffening webs 11, tabs 12 are formed that face each other and thus, in the deployed position of the support part 4, face the rotating column 1. An advantageous variant can be seen in Fig. 3. It can be seen there that the support part 4, in its deployed position, encloses the rotating column over an area of more than 180° in cooperation with the tabs 12 directed against the rotating column 1. By simply plugging it in, the support part 4 is held securely until the shelf 2 is put in place.

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Within the scope of the invention, a design would also be possible in which the support part 4 is designed as a fastening element. It would thus be conceivable to provide a locking bolt on the support part 4 that is adjustable transversely to the mounting position of the same on the rotating column 1, which then

1 formed locking holes or notches. Depending on the number of locking holes or notches, a selection of different heights of the support parts 4 and thus of the shelves 2 could also be made in a simple manner.

A further variant provides for a fastening element to be provided on the support part 4, namely in the form of a screw aligned transversely to the mounting position of the same on the rotating column 1. This screw could then be screwed into threaded holes formed at different distances on the rotating column.

Fig. 6 shows a further embodiment, according to which an even faster and simpler assembly is possible. Here, plate parts 18 and 19 are mounted on the rotating column 1, for example firmly connected to it by welding. These plate parts 18 and 19 serve to hold upper door angles 20 and lower door angles 21. When used in corner cabinets, door elements are screwed onto these door angles, which in the rest position of the shelves

2 close the front of a cabinet. Here, the support parts 4 can be pre-assembled by simply placing them on the plate parts 18 and 19. No additional support elements, e.g. in the form of bolts, or any additional fastening elements are required here. The support part 4 is held in place sufficiently by the tabs 12 that engage behind the rotating column. This in itself minor force- and form-fitting holder is sufficient until the shelf 2 is brought forward and placed on the support part 4. The plate parts 18 and 19 ensure sufficient support downwards. With such a use of support parts 4, the protruding holding elements 9 with the recesses 10 would not actually be required, since the flat support surface of the plate parts 18 and 19 is sufficient to simply allow the lower end of a support part 4 to rest securely. However, if these holding elements 9 with the recesses 10 are present, a more universal replaceability of the support part is given.

Both the support part 4 and the shelf 2 are expediently made from a special plastic, so that relatively little material is required despite the sturdy design. The use of other materials, including metals, is possible. The support part 4 in particular can be made particularly sturdy by arranging stiffening ribs (see e.g. Fig. 4) on the inside. This also applies to the shelf 2, a section of which can be seen from the underside in Fig. 5. The special arrangement and design of the ribs and webs will not be discussed in detail here. However, it is just clear from Fig. 5 that, for example, the acute-angled support surfaces 6 are formed by webs or ribs 13 arranged parallel and spaced from one another. This can reduce the frictional forces that arise between the support surfaces 5 and 6 under axial loading. The special design of the support part 4 made of plastic allows for mutual adjustment between

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Support part 4 and shelf 2 can be achieved. The section 14 protruding from the front of the support part 4 and the section 15 protruding from the top engage in the recesses 16 and 17 formed in the center of the shelf, thus closing them after assembly and thereby contributing to a further increase in strength.

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Claims (11)

1. Arrangement for the rotationally fixed and vertically fixable mounting of shelves on a vertical rotating column, wherein a contact surface for horizontal support on the rotating column is formed in the center of the shelf and opposite this contact surface a support part can be inserted which can be pressed onto the rotating column from the other side and brought into operative connection with the shelf, characterized in that the support part ( 4 ) can be pre-assembled on the rotating column ( 1 ) and the shelf ( 2 ) can be placed on the pre-assembled support part ( 4 ) from above as seen in the axial direction of the rotating column ( 1 ), wherein support surfaces ( 5 , 6 ) which can be brought into operative connection with one another and are aligned at an acute angle to the central axis of the rotating column ( 1 ) are provided on the support part ( 4 ) and on sections of the shelf ( 2 ), and thus the contact force of the contact surface ( 3 ) of the shelf ( 2 ) on the rotating column ( 1 ) and the contact pressure of the support part ( 4 ) on the rotating column ( 1 ) is determined by the weight of the shelf ( 2 ) and, if applicable, by the weight of the material resting on the shelf ( 2 ). 2. Arrangement according to claim 1, characterized in that the support part ( 4 ) is designed as a body which can be inserted guided on the underside of the shelf ( 2 ), which has two support surfaces ( 5 ) arranged at a distance from one another and facing away from the contact surface ( 7 ) on the rotary column ( 1 ), which cooperate with support surfaces ( 6 ) formed on the insertion opening on the shelf ( 2 ). 3. Arrangement according to claim 1, characterized in that the contact surfaces ( 3 , 7 ) on both the shelf ( 2 ) and the support part ( 4 ) have a cylindrical section-shaped shape that is at least approximately adapted to the radius of the rotary column ( 1 ). 4. Arrangement according to claim 1, characterized in that the support part ( 4 ) can be supported on support elements ( 8 ) of the rotary column ( 1 ) and/or by means of fastening elements relative to the rotary column ( 1 ) or can be fixed relative to the latter. 5. Arrangement according to claim 1, characterized in that nose-like projecting holding elements ( 9 ) with approximately semicircular or U-shaped recesses ( 10 ) in cross section are formed on the support part ( 4 ) in the region of its lower end, which engage over a cross bolt fixed to the rotary column ( 1 ) when the support part ( 4 ) is in the position resting on the rotary column ( 1 ). 6. Arrangement according to claim 4, characterized in that stiffening webs ( 11 ) are formed opposite the approximately semicircular or U-shaped recesses ( 10 ) of the nose-like projecting holding elements ( 9 ). 7. Arrangement according to claim 5, characterized in that tabs ( 12 ) directed towards one another and thus, in the use position of the support part ( 4 ), towards the rotary column ( 1 ) are formed on the freely projecting ends of the stiffening webs ( 11 ). 8. Arrangement according to claim 6, characterized in that the support part ( 4 ) in the position of use thereof in cooperation with the tabs ( 12 ) directed against the rotary column ( 1 ) comprises an area of more than 180° of the rotary column ( 1 ). 9. Arrangement according to claim 4, characterized in that the support part ( 4 ) has as a fastening element a locking bolt which is adjustable transversely to the mounting position of the same on the rotary column ( 1 ) and which engages in locking holes or notches formed on the rotary column ( 1 ). 10. Arrangement according to claim 4, characterized in that the support part ( 4 ) has as a fastening element a screw which is aligned transversely to the mounting position of the same on the rotary column ( 1 ) and which can be screwed into threaded holes formed at different distances on the rotary column ( 1 ). 11. Arrangement according to claim 4, characterized in that the plate parts ( 18 , 19 ) arranged fixedly or fixably on the rotary column ( 1 ) are provided as a support element for the support part ( 4 ).