AU2011273665B2

AU2011273665B2 - Cabinet having a pull-out part

Info

Publication number: AU2011273665B2
Application number: AU2011273665A
Authority: AU
Inventors: Roman Herzog; Andreas Kathler; Guido Limberg; Andreas Stuffel
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2010-06-29
Filing date: 2011-06-22
Publication date: 2015-03-19
Anticipated expiration: 2031-06-22
Also published as: CN102970898A; WO2012000867A1; PL2587962T3; ES2523386T3; EP2587962A1; EP2587962B1; RU2013102784A; RU2560038C2; KR20130097710A; CN102970898B; DE102010017639A1; AU2011273665A1; JP5810453B2; KR101810043B1; TW201208610A; JP2013533033A

Abstract

The invention relates to a cabinet having a pull-out part (1), preferably a drawer, wherein the pull-out part (1) is connected to rails (4) of pull-out guides (2) and is fixed relative to the rails (4) in all coordinate directions and can be removed from the rails (4) without tools if needed, wherein the pull-out part (1) is secured against lifting off and against transverse displacement relative to the rails (4) in the back side area, said cabinet being designed so that a molded part (6) is attached to the pull-out part (1) or to the rails (4) for coupling the pull-out part (1) to the front end areas of the rails (4), wherein each molded part (6) comprises two spring bars (12) running parallel to each other, spaced apart from each other, and each penetrating the corresponding rail (4) in the area of a longitudinal slit (16) open to the front side of the rail, or of a longitudinal slit (16) corresponding to the pull-out part (1) to be coupled and open to the back side of the pull-out part, each comprising lugs (13) spread apart from each other in opposite directions at the ends thereof penetrating the longitudinal slit (16) and having mounting legs (14) also spread apart from each other in opposite directions at the ends thereof facing the opening of each longitudinal slit (16), said legs being supported in a form-fit and/or force-fit manner within each longitudinal slit (16) against displacement in the direction of the front side of the rails (4).

Description

1 A piece of cabinet furniture with a pull-out part Field of the Invention The present invention relates to a piece of cabinet furniture with a pull-out part, preferably a drawer, with the pull-out part being connected with running rails of pull-out guides, being fixed relative to the running rails in all coordinate directions and being removable from the running rails without tools if required, with the pull out part being secured against lifting off from and against transverse displacement relative to the rails in the rear area. Background Cabinets of this kind are generally known and generally offer the advantage that a pull-out part can be fixed in a simple manner in relation to the running rails of pull out guides and can similarly be removed if required from the running rails in an easy fashion and without the aid of tools. Summary of the Invention The present invention seeks to provide a piece of cabinet furniture of the kind mentioned above in which the releasable connection between the pull-out part and the running rails is realized with means which are exceptionally simple from a constructional standpoint, and potential removal of the pull-out part from the running rails is also easily possible by persons who are technically unskilled. This may be achieved in accordance with embodiments of the invention in such a way that a formed part is respectively attached to the pull-out part or the running rails for coupling the pull-out part with the front end areas of the running rails, with each formed part comprising two spring bars running parallel to each other, spaced apart from each other, and each penetrating the respective running rail in the area of a longitudinal slit open towards the front side of the running rail or of a longitudinal slit corresponding to the pull-out part to be coupled and open towards the back side of the pull-out part, which spring bars comprise lugs spreading apart from one another in opposite directions at the ends thereof penetrating the longitudinal slit and comprise holding legs also spread apart from each other in opposite directions at the ends thereof facing the opening of each longitudinal slit, 6154840_1 (GHMatters) P92011.AU MCAMP 2 which legs are supported in a form-fitting and/or friction-locked manner within the respective longitudinal slit against displacement in the direction of the front side of the running rails. In one aspect of the invention, there is provided a piece of cabinet furniture, comprising: a pull-out part, capable of being connected with running rails of pull-out guides, being fixed relative to the running rails in all coordinate directions, and being removable from the running rails without tools, the pull-out part being secured against lifting off from and against transverse displacement relative to the running rails in the rear area, wherein a formed part attached to the pull-out part or the running rails is provided for coupling the pull-out part with the front end areas of the running rails, each formed part comprising two spring bars running parallel to each other, spaced apart from each other, and penetrating the respective running rail in the area of a longitudinal slit open towards the front side of the running rail or of a longitudinal slit corresponding to the pull-out part to be coupled and open towards the rear side of the pull-out part, the spring bars comprising: lugs spreading apart from one another in opposite directions at the ends thereof penetrating the longitudinal slit ; and, holding legs also spread apart from each other in opposite directions at the ends thereof facing the opening of each longitudinal slit, the holding legs supported in a form-fitting and/or friction-locked manner within the respective longitudinal slit against displacement in the direction of the front side of the running rails. Only two formed parts are required for the releasable fixing of a pull-out part on the running rails of pull-out guides in accordance with an embodiment of the invention in addition to the means in the rear end region of the running rails that are known anyway, which formed parts are fixed to the pull-out part in the front end regions thereof and which fix the pull-out part in all three coordinate directions after coupling with the running rails. 6154840_1 (GHMatters) P92011.AU MCAMP 3 The alternative solution provides fixing the formed parts in the front regions of the running rails and fixing the same after coupling with the pull-out part in a longitudinal slit of the pull-out part in all three coordinate directions, which longitudinal slit is open towards the rear side of the pull-out part. If the pull-out part needs to be removed from the running rails, this can occur in such a way that the pull-out part is lifted upwardly in its front end region in relation to the running rails, by means of which the separation of the formed parts from the running rails is produced. This is enabled in such a way that the lugs projecting at the ends of the spring bars that penetrate the longitudinal slits are compressed in exerting upwardly directed forces by lifting the pull-out part as a result of the resilient properties of the spring bars and can be pulled through the respective longitudinal slit. Any inadvertent release in this direction is completely excluded however because respective forces will not occur in normal operation or only to such a magnitude (i.e. when the pull-out part is pulled out or pushed in) which is not suitable for compressing the projecting lugs at the bottom ends of the spring bar to such an extent that they can be guided upwardly through the respective longitudinal slit. As soon as the pull-out part has been separated in the front end region (as described above) from the running rails after intentional manipulation, the pull-out part can be withdrawn from the running rails in the longitudinal direction thereof because fixing of the pull-out part in relation to the running rails occurs only transversely to the longitudinal axes of the running rails in the rear end region and therefore obstruction-free withdrawal is possible in the longitudinal direction of the running rails. If the pull-out part is to be coupled with the running rails again, the pull-out part will be placed in a horizontal position on the running rails in which the two formed parts are disposed in front of the open ends of the longitudinal slits. Consequently, the respective formed part can be pushed with its spring bars into the longitudinal slits provided for this purpose by displacing the pull-out part in the insertion direction, wherein the lugs spreading apart from one another in opposite directions at the ends thereof penetrating the longitudinal slit engage behind the running rails 6154840_1 (GHMatters) P92011.AU MCAMP 4 in the region of the longitudinal slits and therefore prevent any inadvertent lifting off of the pull-out part from the running rails. The holding legs which are provided on the ends of the spring bars facing the respective opening of the longitudinal slits are compressed during insertion into the longitudinal slits and can be supported in the longitudinal slit in a form-fitting and/or friction-locked manner within the longitudinal slits. As a result, the pull-out part is securely fixed against relative displacement in relation to the running rails, so that the pull-out part is fixed in all possible coordinate directions relative to the running rails. Further features of various embodiments of the invention are the subject matter of the dependent claims. Brief Description of the Drawings Embodiments of the invention are shown in the enclosed drawings and are described below in closer detail, wherein: Fig. 1 shows a schematic side view of a pull-out part in form of a drawer of a piece of cabinet furniture (not shown) in coupled arrangement on two pull-out guides arranged in parallel; Fig. 2 shows a side view of the pull-out part corresponding to Fig. 1 in a first release position; Fig. 3 shows a respective further side view of the pull-out part corresponding to Figs. 1 and 2 in a second release position; Fig. 4 shows a schematically shown bottom view of the pull-out part according to Figs. 1 to 3 in a pre-mounting position; Fig. 5 shows an enlarged view of the detail designated in Fig. 4 with reference numeral V; Fig. 6 shows a bottom view of the pull-out part corresponding to Fig. 4 in the final mounting position; 6154840_1 (GHMatters) P92011.AU MCAMP 5 Fig. 7 shows an enlarged view of the detail designated with reference numeral VII in Fig. 6; Fig. 8 shows a perspective partial view of a pull-out guide with a pull-out part which is fixed to a pull-out part according to Figs. 1 to 7, is not shown for reasons of clarity of the illustration and comprises a formed part for coupling the adapter and therefore the pull-out part with a running rail of the pull-out guide; Fig. 9 shows a perspective view of the pull-out guide and the adapter in addition to the formed part as seen from a view opposite of Fig. 8; Figs. 10a to 10f show different detailed views of a running rail of a pull-out guide with a formed part that is coupled with said rail; Figs. 11a to 11c show various views of the running rail and the formed part in a direction of view corresponding to Fig. 10a; Figs. 12a to 12f show various detailed views of a running rail and a formed part that is coupled to said rail according to a further embodiment of the invention; Figs. 13a to 13c show various views of the running rail and the formed part in a direction of view according to Fig. 12a; Figs. 14a to 14f show various views of a formed part; Fig. 15 shows a partial sectional view through a connecting region of a formed part with an adapter of a pull-out part; Fig. 16 shows a partial sectional view corresponding to Fig. 15 with a connection between formed part and adapter that can be displaced within limits. Figs. 1 to 7 designate with reference numeral 1 an entire pull-out part of a piece of cabinet furniture not shown in closer detail, which in the specific embodiment is arranged as a drawer. 6154840_1 (GHMatters) P92011.AU MCAMP 6 Detailed Description As is known, the pull-out part 1 is held and guided in a longitudinally displaceable manner via pull-out guides 2 in the body of a piece of cabinet furniture. The pull-out guides 2 are respectively arranged in the region of the two longitudinal sides of the pull-out part 1 and comprise at least one guide rail 3 which can be fixed on the body side and a running rail 4 which can be connected with the pull-out part 1. Optionally, the pull-out guides 2 also comprise a middle rail that extends the pull-out and is of subordinate relevance in this case. The connection of the pull-out part 1 with the running rails 4 of the pull-out guides 2 occurs in the rear region of the running rails 4 and the pull-out part 1 by way of so-called catch hooks 5 which are provided in the rear end region on the running rails 4 and by way of openings (not shown in the drawings) in the rear end region of the pull-out part 1, into which the catch hooks 5 of each running rail 4 will engage when the pull-out part 1 is mounted. This connection technique in the rear end region is generally known and will therefore not be explained in closer detail. Notice must be taken that as a result of the catch hooks 5 in the rear end region of the running rails 4 and their engagement in the rear openings of the pull-out part 1 it is secured in the rear end region relative to the running rails 4 both against vertical and also horizontal displacement transversely to the longitudinal axis of the running rails 4. Fixing of the pull-out part 1 in the longitudinal direction of the running rails 4 is not enabled by the catch hooks 5. It is understood that other known variants can be used instead of the described connection of the pull-out part 1 in the rear end region of the running rails 4. In the front end region, the connection of the pull-out part 1 with the running rails 4 occurs via formed parts 6 which are directly or indirectly fastened to adapters 7 on the pull-out part 1, with the adapters 7 being rigidly connected in the known manner with the pull-out part 1. The formed parts 6, which are preferably made integrally from a metal and preferably from spring steel, comprise a pocket 8 in the connecting region to the 6154840_1 (GHMatters) P92011.AU MCAMP 7 adapter 7, into which a tongue 9 protruding from the adapter 7 will engage. This is shown especially in Figs. 15 and 16. In this respect, the material layer of the formed part 6 which covers the tongue 9 on the upper side is provided with a latching tongue 10 which protrudes in the direction of the pocket 8, which tongue engages into a recess 11 of the respective tongue 9. The recess 11 can be dimensioned in such a way that a displacement of the formed part 7 is no longer possible after the latching of the latching tongue 10 in the recess 11; it is also possible to dimension in the recess 11 in such a way that a slight displacing possibility of the formed part 6 transversely to the longitudinal axis of the running rail 4 is still possible, as is shown in Fig. 16. Preferably, an embodiment is preferred within the entire concept of the present invention in which the formed part 6 is non-displaceable and the other formed part 6 is displaceable within limits in order to enable tolerance compensation between the two running rails 4 which are arranged at a distance from one another. Each formed part 6 is provided with two spring bars 12 which extend in parallel with respect to each other and are disposed at a distance from one another, and which comprise lugs 13 spread apart from each other in opposite directions at the bottom ends thereof. At their ends facing the front side of the running rails 4, the spring bars 12 are provided with holding legs 14 which are also spread apart from each other in opposite directions. At their front ends as seen in the insertion direction, the spring bars 12 are provided with guide lugs 15 which are bent off by facing one another and originate from the spring bars 12. This constructional configuration of the formed part 6 is shown in particular detail in Figs. 14a to 14f. The running rails 4 are respectively provided with a longitudinal slit 16 which is open towards their front end. The respective longitudinal slit 16 is provided with an insertion opening 17, the width of which is smaller than the distance of the free 6154840_1 (GHMatters) P92011.AU MCAMP 8 ends of the holding legs 14 which are mutually spread apart. As seen towards the front side of the running rails 4, the respective insertion opening 17 is limited by insertion bevels 18. As a result of the guide lugs 15 which face towards one another and the insertion bevels 18, the formed part 18 can be introduced securely into the longitudinal slit 16 of the respective running rail 4. Since every formed part 6 is rigidly connected with the pull-out part 1 in the insertion direction, every formed part 6 will be displaced during insertion of the pull-out part 1 into a furniture body up to a final limit of the insertion path of the pull-out part 1 into the respective longitudinal slit 16. In this inserted state, the free ends of the holding legs 14 will be supported in a region 19 of the longitudinal slit 16 which is expanded in relation to the insertion opening 17, wherein this can occur, as in the embodiment of the invention according to Figs. 11a to 11c, on latching teeth 20 or by notching the outside edges of the holding legs 14 on straight flanks of the expanded region 19 of the longitudinal slit 16. In other words, the anchoring, fixing or support of the holding legs 14 against pushing back of the formed part 6 can occur in a form-fitting and/or friction-locked manner. As a result, the pull-out part 1 is secured against longitudinal displacement relative to the running rail 4 after the first complete insertion into a furniture body. The spring bars 12 of the formed part 6 lie in the inserted state in a section 22 of the longitudinal slit 16, the width of which corresponds to the distance of the two spring bars 12 and the length of which is dimensioned in such a way that the lugs 13 have already entered the section 22 in the position when the holding legs 14 have passed through the insertion opening 17, as is clearly shown in Figs. 13, 15 and 16. In the embodiment with the latching teeth 20, the section 22 in the region of the latching teeth 20 is dimensioned by the tooth tips on the opposite flanks of the longitudinal slit 16. As a result, the pull-out part 1 is fixed against horizontal transverse displacement relative to the running rail 4. The lifting off of the pull-out part 1 from the running rail 4 is prevented by the lugs 13 which are spread apart in opposite direction at the bottom ends of the spring bars 12, which is also shown clearly in Figs. 15 and 16. As a result, a pull-out part 1 6154840_1 (GHMatters) P92011.AU MCAMP 9 is fixed after completed mounting in all coordinate directions against displacement relative to the running rail 4. In the event of dismounting that seems required or desirable, it is sufficient to upwardly lift the pull-out part at its front end region, as indicated in Fig. 2. During the lifting, the lugs 13 are pressed together as a result of the spring capability of the entire formed part and moved through the constricted section 22 of the longitudinal slit 16. Consequently, the pull-out part 1 is severed from the front end regions of the running rails 4 and can be separated completely from the running rails 4 by further pulling from the furniture body, as shown in Fig. 3, since the pull out part 1 can be withdrawn easily from the rear catch hooks 5 of the running rails 4. If the pull-out part 1 is to be mounted again, it is sufficient to place the pull-out part 1 in its horizontal position on the running rails 4 in which the formed parts 6 are still disposed outside of the longitudinal slits 16, as is illustrated in closer detail in Figs. 4 and 5. By sliding in the pull-out part 1, the catch hooks 5 come into the engagement region towards the rear openings of the pull-out part 1 and the formed parts 6 are introduced through the insertion opening 17 under temporary compression of the rear holding legs 14 into the region of the longitudinal slit 16 and then fixed in the aforementioned manner in relation to the running rails 4. It has already been described above that one of the formed parts 6 is laterally movable within certain limits in relation to a running rail 4, so that tolerances can be compensated in different distances of the running rails 4 with respect to each other. The threading of the formed parts 6 into the longitudinal slits 16 is simplified by the insertion bevels 18 on the one hand and the guide lugs 15 which form an insertion tip. In the illustrated embodiments, the formed parts 6 are fixed to the aforementioned tongues 9 of an adapter 7, with the adapter 7 being rigidly connected on its part with the pull-out part 1. The adapters 7 are used in the known manner for supporting lateral frames. Notice must be taken however that in the event that a pull-out part is arranged differently 6154840_1 (GHMatters) P92011.AU MCAMP 10 and does not comprise any adapters the formed parts 6 can also be fastened directly to the pull-out part. The latching teeth 20, on which the ends of the holding legs 14 are supported, can be arranged symmetrically on both sides of the longitudinal slit 16 as in the embodiment according to Figs. 11a to 11c. However, it is also possible to arrange the latching teeth 20 in the longitudinal direction of the longitudinal slit 16 in a mutually offset manner, so that a finer grid configuration can be achieved without requiring an extremely fine division of the latching teeth 20, with only one respective holding leg 14 engaging in the corresponding latching tooth 20 in these arrangements. The offset latching teeth 20 are shown in closer detail in Figs. 5 and 7, with the engagement of a holding leg 14 on the latching tooth 20 being shown in Fig. 7. An alternative solution to the embodiment as shown above is that the formed parts 6 can also be fixed to the running rails 4. It is advantageous in this case too when the formed part 6 is fastened rigidly and the other formed part 6 is fastened to be transversely displaceable within limits to the associated running rail. In this case, parts of the pull-out part 1 or the adapter 7 fixed thereto are provided with longitudinal slits 16 which are open towards the rear side of the pull-out part. This virtually concerns a kinematic reversal of the constructional principle according to the described embodiments. In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention. It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia or any other country. 6154840_1 (GHMatters) P92011.AU MCAMP 11 List of reference numerals 1 Pull-out part 2 Pull-out guide 3 Guide rail 4 Running rail 5 Catch hook 6 Formed part 7 Adapter 8 Pocket 9 Tongue 10 Latching tongue 11 Recess 12 Spring bar 13 Lug 14 Holding leg 15 Guide lug 16 Longitudinal slit 17 Insertion opening 18 Insertion bevel 19 Area 20 Latching tooth 21 Flank 22 Section 6154840_1 (GHMatters) P92011.AU MCAMP

Claims

1. A piece of cabinet furniture, comprising: a pull-out part, capable of being connected with running rails of pull-out guides, being fixed relative to the running rails in all coordinate directions, and being removable from the running rails without tools, the pull-out part being secured against lifting off from and against transverse displacement relative to the running rails in the rear area, wherein a formed part attached to the pull-out part or the running rails is provided for coupling the pull-out part with the front end areas of the running rails, each formed part comprising two spring bars running parallel to each other, spaced apart from each other, and penetrating the respective running rail in the area of a longitudinal slit open towards the front side of the running rail or of a longitudinal slit corresponding to the pull-out part to be coupled and open towards the rear side of the pull-out part, the spring bars comprising: lugs spreading apart from one another in opposite directions at the ends thereof penetrating the longitudinal slit ; and, holding legs also spread apart from each other in opposite directions at the ends thereof facing the opening of each longitudinal slit, the holding legs supported in a form-fitting and/or friction-locked manner within the respective longitudinal slit against displacement in the direction of the front side of the running rails.

2. A piece of cabinet furniture according to claim 1, wherein the holding legs are supported on sawtooth-like latching teeth in the edge region of the longitudinal slit.

3. A piece of cabinet furniture according to claim 1, wherein the holding legs are fixed by notching in straight side flanks of the longitudinal slit.

4. A piece of cabinet furniture according to any one of the preceding claims, wherein the lugs provided at the ends of the spring bars penetrating the longitudinal slits protrude beyond the lateral boundary of the longitudinal slit. 6154840_1 (GHMatters) P92011.AU MCAMP 13

5. A piece of cabinet furniture according to any one of the preceding claims, wherein spring bars penetrate the longitudinal slit within a section in a play-free or virtually play-free manner.

6. A piece of cabinet furniture according to any one of the preceding claims, wherein for the purpose of facilitating the insertion of each formed part into the longitudinal slits, guide lugs, which are bent off towards one another, are provided at the ends of the spring bars which are at the front as seen in the insertion direction.

7. A piece of cabinet furniture according to any one of the preceding claims, wherein the respective longitudinal slit is provided in its open end region with an insertion opening, and said insertion opening is expanded by insertion bevels.

8. A piece of cabinet furniture according to any one of the preceding claims, wherein each formed part is attached directly or indirectly on the pull-out part or on the running rails.

9. A piece of cabinet furniture according to any one of the preceding claims, wherein each formed part is respectively connected with an adapter rigidly connected with the pull-out part.

10. A piece of cabinet furniture according to claim 9, wherein each formed part is pushed onto a horizontally disposed tongue of the adapters and is secured against displacement by a latching tongue which engage into recesses of the horizontally disposed tongue .

11. A piece of cabinet furniture according to any one of the preceding claims, wherein one of the formed parts is non-displaceable transversally to the longitudinal direction of the running rail and the other formed part is displaceable within limits in a direction transversely to the longitudinal axis of the running rail.

12. A piece of cabinet furniture according to any one of claims 2 to 11, wherein the latching teeth are arranged in mutually opposite flank regions of the 6154840_1 (GHMatters) P92011.AU MCAMP 14 longitudinal slit.

13. A piece of cabinet furniture according to claim 12, wherein the latching teeth are arranged in a mirror-symmetrical manner with respect to each other.

14. A piece of cabinet furniture according to claim 12, wherein the latching teeth are arranged in a mutually offset manner with respect to each other in the longitudinal direction of the running rail.

15. A piece of cabinet furniture according to any one of the preceding claims, wherein the pull-out part is a drawer.

16.A piece of cabinet furniture substantially as herein described with reference to and as illustrated in the accompanying drawings. 6154840_1 (GHMatters) P92011.AU MCAMP