Mounting element for an extendable cabinet frame for a pull-out tall cabinet

Description

background

[0001] The present invention relates to a holding element for an extendable cabinet frame for a pull-out tall cabinet. State of the art

[0002] Tall cabinets are available in various heights to accommodate different ceiling heights. They typically contain multiple shelves. These shelves can be connected to the cabinet walls using connectors. Such connectors are described, for example, in document WO2017 / 015402 A1.

[0003] If these tall cabinets are extendable, the front of the tall cabinet is movable relative to the fixed side walls and the back wall. In this case, the previously known connecting devices cannot be used, as these connecting devices are usually fixed to the side walls of the tall cabinet. If the extendable tall cabinet contains multiple shelves, these shelves are usually held in a cabinet frame, the cabinet frame being extendable along with the shelves. The cabinet frame also serves as a support for the front of the tall cabinet.

[0004] Such a cabinet frame typically consists of two vertically extending support elements and at least two horizontal support elements connecting them, forming a frame. The horizontal support elements are slidably mounted in the base and top panels. For this purpose, a guide rail can be attached to both the base panel and the underside of the top panel, each of which accommodates corresponding guide elements for the horizontal support elements. To accommodate different cabinet heights, such frames have a telescopic design. In particular, the two vertically extending support elements comprise at least one outer support element and one inner support element, with the inner support element being slidable within the outer support element.The inner support element can be attached to the outer support element at any position using screws, allowing the overall height of the vertical support element to be adjusted to the desired height of the tall cabinet. This makes it easy to adapt a standard cabinet frame, hereinafter referred to as the cabinet base frame, to different installation heights.

[0005] The additional height may not be usable if no additional shelf can be provided on the inner support element. To overcome this disadvantage, an additional holding device is typically provided, which can be used to support further shelves. According to the known solution, retaining hooks are incorporated at predetermined intervals on the outside of the outer support element, into which a corresponding support surface at the desired height can be hung. Such retaining hooks cannot be attached directly to the inner support element, as they would prevent the inner support element from sliding within the outer support element. For this purpose, a support element sleeve is provided as a retaining element, which is slidably arranged on the inner support element.This support element sleeve can be attached to any position on the inner support element using locking screws. The support element sleeve is equipped with retaining hooks for an additional shelf, allowing one (or more) additional shelves to be mounted on it. This makes it possible to utilize the additional height of a tall cabinet.

[0006] The support element sleeve must be installed before the cabinet frame is fitted into the tall cabinet. Since the cabinet frame must support the shelves and the front panel, it is permanently connected to the base and top panels via a guide element. Therefore, retrofitting an existing cabinet frame with the appropriate support element sleeves requires its complete removal, which is very time-consuming.

[0007] Furthermore, the support element sleeve must be precisely leveled to avoid any deviation of a storage surface from the desired horizontal position.

[0008] Furthermore, it has proven disadvantageous that the distance to existing storage surfaces can vary. Depending on the position of the support element sleeve, the storage space under and / or above the additional shelf can be larger or smaller than the distance between the remaining shelves. Therefore, the available storage space may not be optimally utilized, especially if the distance to the adjacent shelf is smaller.

[0009] A holding device for shelf surfaces, which can be attached to different points on a support element, is also shown in DE 3517568 A1. The holding device comprises a sleeve, a locking mechanism, and a base element connected to the corresponding shelf of the rack. The base element is placed over the holding device, thereby fixing the holding device to the support element at the desired height. Since the sleeve has a closed, rectangular cross-section, it must be placed over the end of the support element. If the end of the support element is too high or if the support elements form a closed frame, attaching such a sleeve is somewhat complicated and, like the support element sleeve described above, can only be done before the support element frame is assembled.

[0010] A connecting element for a plant storage shelf is disclosed in document US2022 / 0218108 A1. The connecting element comprises a first wall element, a second wall element, and a third wall element, with the second and third wall elements being arranged adjacent to the first wall element. The second wall element is arranged opposite the third wall element. Opposite the first wall element is a fourth wall element. The fourth wall element has a longitudinal slot. To increase the structural stability of the shelf's vertical supports, the connecting element is inserted into the support, which completely encloses the connecting element. The connecting element is thus located inside the support, which has a C-shaped cross-section.Fastening elements, such as rivets, are attached to the inside of the connecting element, which are received in corresponding openings of the connecting element and corresponding openings of the carrier.

[0011] The connecting element described in document US2022 / 0218108 A1 allows two supports to be joined together to increase the distance between adjacent shelves of a shelving unit as needed, for example, when plants require more height due to their growth. This solution allows the height of the vertical supports of the shelving unit to be increased. The solution relates to a connecting element for increasing the distance between two adjacent shelves of a shelving unit whose overall height can be changed. This solution is not suitable for a support element for a cabinet frame of a tall cabinet with multiple shelves, where the support element is designed to allow the addition of extra shelves, because the overall height of the cabinet, and therefore also the overall height of the support frame intended to hold the shelves, is fixed.

[0012] Therefore, there is a need for a holding element that can be retrofitted to a support frame for attaching shelves to a tall cabinet without significant effort or the use of tools.

[0013] The object of the invention is to provide a holding element for a cabinet frame that can be easily attached to the support frame to provide an additional shelf. Furthermore, a holding element is required by means of which the distance between the lowest additional shelf and the uppermost shelf of the cabinet frame can be adjusted to a specific, predetermined distance. Description of the invention

[0014] The problem of the invention is solved by a retaining element for an extendable cabinet frame for a pull-out tall cabinet according to claim 1. Advantageous embodiments of the retaining element for the extendable cabinet frame are the subject of claims 2 to 7. An extendable cabinet frame comprising a retaining element according to the invention is the subject of claim 8.

[0015] When the term "for example" is used in the following description, it refers to exemplary embodiments and / or configurations, which is not necessarily to be understood as a preferred application of the teaching of the invention. Similarly, the terms "preferably" and "preferred" are to be understood as referring to one example from a set of exemplary embodiments and / or configurations, which is not necessarily to be understood as a preferred application of the teaching of the invention. Accordingly, the terms "for example," "preferably," or "preferred" may refer to a plurality of exemplary embodiments and / or configurations.

[0016] The following detailed description contains various embodiments of the retaining element according to the invention. The description of a particular retaining element is to be considered exemplary only. In the description and the claims, the terms "contain," "comprise," and "have" are interpreted as "contained, but not limited to."

[0017] A support element for an extendable cabinet frame for a pull-out tall cabinet comprises a first wall element, a second wall element, and a third wall element, with the second and third wall elements arranged adjacent to the first wall element. The second wall element is positioned opposite the third wall element. A fourth wall element is positioned opposite the first wall element. The first, second, third, and fourth wall elements enclose a cuboid cavity. In the installed state, the support element unit of the cabinet frame is located within this cuboid cavity.

[0018] The fourth wall element has a longitudinal slot. The first, second, third, and fourth wall elements are designed to enclose the support element unit of the cabinet frame. The first, second, third, and fourth wall elements are designed to rest on the support element unit of the cabinet frame. In other words, the first, second, third, and fourth wall elements enclose the support element unit of the cabinet frame when installed. Specifically, the inner surfaces of the first, second, third, and fourth wall elements rest on the corresponding outer surfaces of the support element unit of the cabinet frame.

[0019] The second wall element and the third wall element each have an outer side, with at least one mounting element for an additional shelf attached to at least one of the outer sides.

[0020] The retaining element thus has a substantially C-shaped cross-section, wherein the base of the C-shaped cross-section is formed by the first wall element, the legs of the C-shaped cross-section adjoining the base are formed by the second and third wall elements, and the end sections of the C-shaped cross-section adjoining the legs are formed by the fourth wall element, which contains the slot. In particular, the retaining element is elastically deformable such that the slot can be widened manually with minimal force. The retaining element can therefore be attached to the support element unit of the extendable cabinet frame without tools.

[0021] At least one hook element is attached to at least one of the outer sides. If one or more mounting elements are provided, an additional shelf can be provided if the tall cabinet has a greater height than the minimum installation height.

[0022] According to one embodiment, the slot has a width that is variable, at least in a partial section. In particular, the retaining element has a first end and a second end, with the partial section in which the slot width is variable adjoining at least one of the first or second ends. According to this embodiment, the retaining element can be attached to a support element of the cabinet frame particularly easily and with even less force. In particular, the partial section can have a length that is a maximum of 35% of the total length L of the retaining element. Specifically, the retaining element can be attached to the support element at an acute angle with respect to the support element, with the partial section having a variable slot width.The slot is already partially widened by the support element, so that only a small additional force is required to attach the entire holding element to the support element.

[0023] In particular, the width of the slot in the partial section decreases with increasing distance from the first or second end adjoining the partial section. According to this embodiment, the retaining element is therefore less rigid at the first or second end adjoining the partial section, thus facilitating elastic deformation in the partial section. The retaining element can therefore be attached to a support element with less force. According to an alternative embodiment, such a partial section can also be provided at the first and second ends.

[0024] According to one embodiment, the receiving element nearest to the first end is positioned at a distance from the first end such that, in the installed state, a standard distance to each adjacent receiving element is maintained. In many cases, shelves are installed at a constant distance from one another, so that the storage space above each shelf has the same height for each shelf. When the retaining element is used, it is designed so that its underside rests on the outer support element of the cabinet frame. The retaining element is attached to the inner support element of the cabinet frame. Therefore, the receiving element nearest to the first end can be positioned at a suitable distance from the first end, resulting in the standard distance in the installed state.This means that additional shelves, designed to utilize the extra height of the tall cabinet, can be positioned precisely at standard intervals. Firstly, each shelf offers the same storage space, and secondly, maintaining consistent spacing between adjacent shelves may be aesthetically desirable.

[0025] According to one embodiment, the retaining element is elastically deformable in such a way that it is designed for tool-free mounting on a support element unit belonging to a cabinet frame. The elasticity of the retaining element enables its tool-free mounting on the associated support element unit of the cabinet frame. According to the invention, the retaining element contains a plastic or a metal. For example, the retaining element can be made of plastic, which simplifies its manufacture, since such a retaining element can be produced, for example, by injection molding. Alternatively, the retaining element can be made of metal, which allows for a longer service life.

[0026] The invention further relates to an extendable cabinet frame comprising a retaining element according to one of the preceding embodiments. In particular, the invention relates to an extendable cabinet frame for a pull-out tall cabinet comprising a support frame and at least a first and a second retaining element. The support frame comprises a first support unit, a second support unit, a lower guide element, and an upper guide element. The first support unit and the second support unit each contain a plurality of receiving elements for at least one shelf. The first support unit and the second support unit have a height that is adjustable depending on the height of the tall cabinet.

[0027] Each of the first and second retaining elements contains a first wall element, a second wall element, and a third wall element. The second and third wall elements are arranged adjacent to the first wall element, with the second wall element positioned opposite the third wall element. Opposite the first wall element is a fourth wall element, such that the first, second, third, and fourth wall elements enclose a cuboid cavity. The fourth wall element has a longitudinal slot.

[0028] The retaining element is designed such that the first, second, third, and fourth wall elements enclose the corresponding first or second support element unit. The second and third wall elements each have an outer surface, with at least one receiving element for an additional storage surface attached to at least one of these outer surfaces. The retaining element can incorporate any of the features described above.

[0029] According to one embodiment, the first support element unit comprises a first sub-support element and a second sub-support element. The second support element unit comprises a first sub-support element and a second sub-support element. According to this embodiment, the second sub-support elements are telescopically displaceable within the first sub-support elements. According to one embodiment, the first and second support element units extend in a substantially vertical direction. In particular, the first and second support element units are arranged vertically in the installed state.

[0030] According to one embodiment, at least one of the first or second guide elements comprises at least one stationary guide rail and a guide rail movable relative to the stationary guide rail via roller elements. The stationary guide rail can be attached, in particular, to the cabinet floor or the cabinet ceiling. The movable guide rail is movable relative to the stationary guide rail. In particular, the first and second guide elements can include roller tracks for roller elements. The movement of the roller elements on the roller tracks enables the movable guide rail to be displaced relative to the stationary guide rail. In particular, the first and second guide elements are displaceable in the horizontal direction.

[0031] According to one embodiment, each of the first partial support elements forms an outer support element and each of the second partial support elements forms an inner support element. Brief description of the drawings

[0032] The holding element according to the invention is described below using several exemplary embodiments. These show Fig. 1 a perspective view of a holding element according to a first embodiment, Fig. 2 a view of the holding element according to Fig. 1 , Fig. 3 a front view of the retaining element according to Fig. 1 , Fig. 4 a front view of a retaining element according to a second embodiment, Fig. 5a a front view of a cabinet frame for a tall cabinet containing a holding element according to one of the preceding embodiments, Fig. 5b a side view of a cabinet frame for a tall cabinet containing a holding element according to one of the preceding embodiments, Fig. 6 An embodiment of a tall cabinet comprising a cabinet frame with a holding element. Detailed description of the drawings

[0033] Fig. 1Figure 10 shows a retaining element 10 for an extendable cabinet frame for a tall cabinet, comprising a first wall element 1, a second wall element 2, and a third wall element 3. The second wall element 3 and the third wall element 3 are arranged adjacent to the first wall element 1. The second wall element 2 is arranged opposite the third wall element 3. Opposite the first wall element 4 is a fourth wall element 4. The first, second, third, and fourth wall elements 1, 2, 3, 4 enclose a cuboid cavity. The fourth wall element has a longitudinally extending slot 5. The second wall element and the third wall element each have an outer surface, with at least one receiving element 6 for a shelf attached to at least one of the outer surfaces. This shelf is an additional shelf that can be used in addition to existing shelves.The first, second, third, and fourth wall elements are designed to rest on a support element unit of the cabinet frame. The support element unit can be part of a support element frame of a cabinet frame 15, as shown in . Fig. 5a or Fig. 5b The supporting frame serves to accommodate a plurality of storage surfaces, which are known per se and have therefore been omitted in the simplified representation. According to the present embodiment, two receiving elements 6 are attached to the outside of the second wall element 2 and two receiving elements 6 are attached to the outside of the third wall element 3.

[0034] Fig. 2 shows a top view of the holding element 10 according to Fig. 1Any rounded edges are omitted in the simplified drawing. The retaining element 1 comprises the first wall element 2, the second wall element 2, which adjoins the first wall element 1, and the third wall element 3, which adjoins the first wall element 1 on the opposite side. The second wall element 2 and the third wall element 3 extend at an angle of substantially 90 degrees to the first wall element 1. The fourth wall element 4 also adjoins the second wall element 2. Similarly, the fourth wall element 4 adjoins the third wall element 3. The second wall element 2 is arranged parallel to the third wall element 3. The fourth wall element 4 is arranged parallel to the first wall element 1. The fourth wall element 4 contains a slot 5 that runs longitudinally along the retaining element. The longitudinal direction of the retaining element extends at right angles to the plane of the drawing.The slot 5 forms a first and a second partial wall element of the fourth wall element 4. The retaining element 10 thus has a substantially C-shaped cross-section, the base of which is formed by the first wall element 1, and the legs adjoining the base of the C-shaped cross-section being formed by the second and third wall elements 2 and 3. The two legs, and thus the second and third wall elements 2 and 3, are arranged opposite each other. The fourth wall element is formed by end sections of the C-shaped cross-section adjoining the legs. The end sections have a centrally located opening, which creates the slot 5. The cross-section of the retaining element is substantially rectangular.

[0035] According to the invention, the first wall element 1, the second wall element 2 and the third wall element 3 contain, as shown in the Fig. 2In the illustrated embodiment, the inner surface features thickenings 7 extending longitudinally. These thickenings 7 are located in the region of the end sections of the corresponding first wall elements 1, second wall elements 2, and third wall elements 3. In particular, the thickening can have a maximum height corresponding to the wall thickness of the respective wall element. If the wall element has a wall thickness of 1.5 mm, the thickening can have a height of up to 1.5 mm. According to the present embodiment, the distance of the thickening 7 from the nearest end of the corresponding wall element 7 is no more than 1 / 4 of the total width of the wall element 7. The width of the wall element is measured in the plane of the drawing. The purpose of the thickening 7 is, among other things, to ensure a play-free fit of the retaining element in the installed state.Furthermore, the thickenings can be at least partially removed if minor deviations in manufacturing tolerances necessitate rework. Material savings can also be achieved, as the wall thickness of the retaining element can be reduced to the minimum required for its function in areas where no thickening is needed. If the retaining element is manufactured as a plastic component, for example using injection molding, the thickenings can simplify demolding from the injection mold.

[0036] Fig. 3 shows a front view of the retaining element 10 according to Fig. 1The drawing is directed towards the fourth wall element 4 to show the slot 5. A portion of the first wall element 1 is visible through the slot 5. The second wall element 2 and the third wall element 3 extend at right angles to the plane of the drawing; therefore, only their outer contours are visible as lines. According to this embodiment, the second wall element 2 and the third wall element 3 each contain two receiving elements 6. The receiving elements 6 are attached to the corresponding outer surfaces of the second and third wall elements 2 and 3.

[0037] The slot 5 has a slot width that is variable, at least in a partial region. According to the present embodiment, the retaining element has a first end 11 and a second end 12, with the partial region in which the slot width is variable adjoining the first end 11. According to this embodiment, the partial region has a length LT that is at most 35% of the total length L of the retaining element 10. According to the present embodiment, the slot width in the partial region decreases with increasing distance from the first end 11 adjoining the partial region. In other words, the slot width is greatest immediately adjacent to the first end 11 and smallest at the end of the partial region, i.e., at the point with length LT. According to this embodiment, the slot width remains constant up to the second end 12. In particular, the slot width can decrease continuously in the partial region.

[0038] Fig. 4 Figure 1 shows a front view of a retaining element 20 according to a second embodiment. Identical or equivalent components are designated with the same reference numerals as in the first embodiment. The fourth wall element 4 contains a slot 5. A portion of the first wall element 1 is visible through the slot 5. The second wall element 2 and the third wall element 3 extend at right angles to the plane of the drawing; therefore, only their outer contours are visible as lines. According to this embodiment, the second wall element 2 and the third wall element 3 each contain three receiving elements 6. The receiving elements 6 are attached to the corresponding outer surfaces of the second and third wall elements 2 and 3.

[0039] The slot 5 has a slot width that is variable, at least in a partial region. According to the present embodiment, the retaining element 20 has a first end 11 and a second end 12, with the partial region in which the slot width is variable adjoining the second end 12. According to this embodiment, the partial region has a length LT that is at most 25% of the total length L of the retaining element 20. According to the present embodiment, the slot width in the partial region decreases with increasing distance from the second end 12 adjoining the partial region. In other words, the slot width is greatest immediately adjacent to the second end 12 and smallest at the end of the partial region, i.e., at the point with length LT. According to this embodiment, the slot width remains constant up to the first end 12. In particular, the slot width can decrease continuously in the partial region.

[0040] Fig. 5aFigure 1 shows a front view of an extendable cabinet frame 15 for a tall cabinet 25, comprising a first and a second support element 10, 20 according to one of the preceding embodiments, as well as a support element frame. The support element frame includes a first support element unit 16, a second support element unit 17, a lower guide element 22, and an upper guide element 21. The first support element unit 16 and the second support element unit 17 each contain a plurality of receiving elements 23 for at least one shelf. The first support element unit 16 and the second support element unit 17 have heights that are adjustable depending on the height of the tall cabinet. Each of the first and second support elements 10, 20 includes a first wall element 1, a second wall element 2, and a third wall element 3, wherein the second wall element 2 and the third wall element 3 are arranged adjacent to the first wall element 1.The second wall element 2 is arranged opposite the third wall element 3. Opposite the first wall element 1, a fourth wall element 4 is arranged, so that the first, second, third, and fourth wall elements 1, 2, 3, 4 enclose a cuboid cavity. The fourth wall element 4 has a longitudinally extending slot 5.

[0041] Each of the retaining elements 10, 20 is designed such that the first, second, third and fourth wall elements 1, 2, 3, 4 enclose the corresponding first or second support element unit 16, 17. The second wall element 2 and the third wall element 3 each have an outer side, with at least one receiving element 6 for an additional storage surface attached to at least one of the outer sides.

[0042] In particular, the first support element unit 16 comprises a first partial support element 31 and a second partial support element 32, and the second support element unit 17 comprises a first partial support element 33 and a second partial support element 34. According to this embodiment, the second partial support elements 32, 34 are telescopically displaceable within the first partial support elements 31, 33. Each of the first partial support elements 31, 33 can form an outer support element 18, and each of the second partial support elements 32, 34 can form an inner support element 19.

[0043] At least one of the lower guide elements 22 or the upper guide elements 21 can comprise at least one stationary guide rail as well as a guide rail movable relative to the stationary guide rail via roller elements.

[0044] The cabinet frame 15 according to the present embodiment comprises two support element units 16, 17 extending vertically in the installed state, and two guide elements 21, 22 connecting the two vertically extending support element units 16, 17 and arranged horizontally in the installed state, which are, for example, designed as guide rails. The vertically extending support element units 16 comprise a front support element unit 16 and a rear support element unit 17.

[0045] The front support element unit 16 and the rear support element unit 17 each comprise an outer support element 18 and an inner support element 19. The inner support element 19 is telescopically mounted within the outer support element 18. The inner support element 19 is thus displaceable relative to the outer support element 18, allowing the height of the front and rear support element units 16, 17 to be adjusted.

[0046] Fig. 5bshows a side view of a cabinet frame 15 for a tall cabinet 25 containing a holding element 10, 20 according to Fig. 5a . A corresponding retaining element 10, 20 is arranged on the inner support element 19 of the front support element unit 16 and the rear support element unit 17. The outer support elements 18 of the front support element unit 16 and the rear support element unit 17 serve as a support for the corresponding retaining elements 10, 20. Fig. 5b Each retaining element 10 is an example according to one of the Figs. 1-3 shown. Alternatively, a retaining element 20 could also be used according to Fig. 4 A cross brace 14 can be used as a connecting element between the outer support elements 18 of the front support element unit 16 and the rear support element unit 17.

[0047] Fig. 6Figure 1 shows an embodiment of a tall cabinet 25 comprising a cabinet frame 15 with a retaining element according to one of the preceding embodiments. In this view, only the front support element unit 16 and the upper guide element 21 of the cabinet frame 15 are visible. The rear support element unit 16, which is not visible, is received in a cabinet body and connected to its rear panel 26, the rear panel 26 being stationary. The upper guide element 21 can be designed as a guide rail that can be slidably mounted in a stationary guide rail that is received in the top 27 of the cabinet body. The lower, non-visible guide element 22 can also be designed as a guide rail that can be slidably mounted in a stationary guide rail that is received on the bottom 28 of the cabinet body.A cover plate 30 is attached to the front support element unit 16, which forms a front wall of the tall cabinet 25 when the tall cabinet is in the closed state.

[0048] Two storage surfaces 29 are shown as examples. The storage surfaces 29 can be designed as storage baskets or as drawer-like containers. In addition to a base area, wall elements can be provided around the perimeter to secure goods stacked on the base area.

[0049] It is obvious to a person skilled in the art that many further variations are possible in addition to the described embodiments without deviating from the inventive concept. The subject matter of the invention is therefore not limited by the preceding description and is defined by the scope of protection established by the claims. For the interpretation of the claims or the description, the broadest possible reading of the claims is decisive. In particular, the terms "contain" or "include" should be interpreted as referring to elements, components, or steps in a non-exclusive sense, thereby indicating that the elements, components, or steps may be present or used, or that they may be combined with other elements, components, or steps that are not explicitly mentioned.If the claims relate to an element or component from a group which may consist of A, B, C to N elements or components, this wording shall be interpreted as requiring only a single element of this group, and not a combination of A and N, B and N or any other combination of two or more elements or components of this group.

Claims

1. A retaining element (10, 20) for an extendable cabinet frame for a pull-out tall cabinet, wherein the retaining element comprises a first wall element (1), a second wall element (2) and a third wall element (3), wherein the second wall element (2) and the third wall element (3) are arranged adjacent to the first wall element (1), wherein the second wall element (2) is arranged opposite the third wall element (3), wherein a fourth wall element (4) is arranged opposite the first wall element (1), so that the first, second, third and fourth wall elements (1, 2, 3, 4) enclose a cuboid cavity, wherein the fourth wall element (4) has a longitudinally extending slot (5), characterised in that the first, second, third and fourth wall elements (1, 2, 3, 4) are configured to rest on a support element unit of the cabinet frame, wherein the second wall element (2) and the third wall element (3) each have an outer side, wherein at least one receiving element (6) for a storage surface is attached, wherein the receiving element (6) is configured as a hook element, wherein the retaining element comprises a plastic or a metal, wherein the first wall element (1), the second wall element (2) and the third wall element (3) comprise thickened sections (7) on the inner side which extend in longitudinal direction.

2. The retaining element of claim 1, wherein the slot (5) has a slot width that is variable at least in a partial section.

3. The retaining element of claim 2, wherein the retaining element has a first end (11) and a second end (12), and wherein the section in which the slot width is variable adjoins at least one of the first or second ends (11, 12).

4. The retaining element of claim 3, wherein the partial section has a length (LT) which amounts to a maximum of 35% of a total length (L) of the retaining element.

5. The retaining element of claim 4, wherein the slot width in the partial section decreases with increasing distance from the first or second end (11, 12) adjoining the partial section.

6. The retaining element of one of the preceding claims, wherein the receiving element (6) closest to the first end (11) is spaced from the first end (11) by a distance such that, when installed, the same distance is maintained from each adjacent receiving element (6).

7. The retaining element of one of the preceding claims, wherein the retaining element is elastically deformable in such a way that it is configured for tool-free assembly on a support element unit (16, 17) forming part of a cabinet frame (15).

8. An extendable cabinet frame (15) for a pull-out tall cabinet, comprising a support element frame and at least a first and a second retaining element (10, 20), wherein the support element frame comprises a first support element unit (16), a second support element unit (17), a lower guide element (22) and an upper guide element (21), wherein the first support element unit (16) and the second support element unit (17) comprise a plurality of receiving elements (23) for at least one shelf, wherein the first support element unit (16) and the second support element unit (17) having a height that is adjustable depending on the height of the tall cabinet, wherein each of the first and second retaining elements (10, 20) comprises a first wall element (1), a second wall element (2) and a third wall element (3), wherein the second wall element (2) and the third wall element (3) are arranged adjacent to the first wall element (1), the second wall element (2) is arranged opposite the third wall element (3), a fourth wall element (4) is arranged opposite the first wall element (1), such that the first, second, third and fourth wall elements (1, 2, 3, 4) enclose a cuboid cavity, wherein the fourth wall element (4) has a longitudinally extending slot (5), characterised in that each of the retaining elements (10, 20) is configured such that the first, second, third and fourth wall elements (1, 2, 3, 4) enclose the corresponding first or second support element unit (16, 17), wherein the second wall element (2) and the third wall element (3) each have an outer side, wherein at least one receiving element (6) is attached at least at one of the outer sides for an additional storage surface, wherein the receiving element (6) is configured as a hook element, wherein the retaining element comprises a plastic or a metal, wherein the first wall element (1), the second wall element (2) and the third wall element (3) comprise thickened sections (7) on the inner side which extend in longitudinal direction.

9. The extendable cabinet frame of claim 8, wherein the first support element unit (16) comprises a first support element portion (31) and a second support element portion (32), and the second support element unit (17) comprises a first support element portion (33) and a second support element portion (34), wherein the second support element portions (32, 34) are telescopically slidable within the first support element portions (31, 33).

10. The extendable cabinet frame of one of claims 8 or 9, wherein at least one of the lower guide elements (22) or the upper guide elements (21) comprises at least one fixed guide rail and a guide rail that is movable relative to the fixed guide rail via roller elements.

11. The extendable cabinet frame of one of claims 8 to 10, wherein the first support element portions (31, 33) each form an outer support element (18) and the second support element portions (32, 34) each form an inner support element (19).

12. The extendable cabinet frame of one of claims 8 to 11, wherein the slot (5) has a slot width that is variable at least in a partial section.

13. The extendable cabinet frame of one of claims 8 to 12, wherein the retaining element has a first end (11) and a second end (12), and the section in which the slot width is variable adjoins at least one of the first or second ends (11, 12).