EP2642897B1 - Coupling device for drawers - Google Patents

Description

• einen Rastteil, der zum lösbaren Kuppeln der Schublade mit der Schiene der Schubladenausziehführung lösbar arretierbar ist,
• einen zur Handbetätigung ausgebildeten Griffteil, durch den der Rastteil relativ zur Schiene der Schubladenausziehführung lösbar ist,
• einen Gegenhalteteil, wobei die Schiene in Montagelage zwischen dem Gegenhalteteil und dem Rastteil aufgenommen ist,
• wobei der Rastteil durch händischen Druck auf den Griffteil in eine vom Gegenhalteteil weg weisende Richtung bewegbar ist.

The present invention relates to a device for releasably coupling a drawer with an extendable rail of a drawer extension guide, comprising:

• a locking part, which is detachably lockable for releasably coupling the drawer to the rail of the drawer extension guide,
• a handle part designed for manual actuation, by means of which the latching part is releasable relative to the rail of the drawer pull-out guide,
• a counter-holding part, wherein the rail is received in the mounting position between the counter-holding part and the latching part,
• wherein the locking part is movable by manual pressure on the handle part in a direction away from the counter-holding part direction.

Furthermore, the invention relates to a drawer extension with a device of the type to be described and a drawer, which is to be connected via such a device with an extendable rail a drawer extension.

According to the prior art, coupling devices are known, by means of which a drawer in its entirety can be mounted or dismounted on an extendable rail of a drawer extension guide, so that the drawer can be completely detached from the drawer extension guide, for example for cleaning purposes, and then re-attached. The coupling of the drawer with the pull-out can be done automatically by a resilient locking part of the device locked with a predetermined connection point of the pull-out rail. During assembly, the drawer extension guide is first preassembled on the furniture, whereupon the drawer to be fastened is pushed onto the pull-out rail located in the closed position, until the drawer is automatically latched to the pull-out rail via the latching part. The disassembly of the drawer relative to the pull-out can also be done without tools by a designed for manual operation grip part is actuated, whereby the locking part is released from the latch and the drawer can then be removed.

Such coupling devices for drawers are in the EP 0 421 458 B1 as well as in the WO 2009/149479 A1 the applicant described. The latching takes place here by latching parts whose staggered stop surfaces are successively engaged in a recess of the pull-out rail and thereby bring about a gradual latching while depressing the drawer with continuous reduction of the game between drawer and puller rail.

In the DE 20 2005 005 489 U1 a drawer extension guide is described with a running rail, at the front end of a Einschubbegrenzer is arranged with a form spring. This ensures that the running rail can only be moved so far in the insertion direction until a front end of the form spring bears against the middle rail of the drawer extension guide, wherein the detent of a coupling device engages in a recess provided in the running rail and moves the form spring out of the displacement of the center rail becomes. This ensures that the running rail is reliably coupled to the sliding furniture part.

In the WO 2010/040273 a device for releasably coupling a drawer to a drawer extension guide is described, wherein a hook part can be latched to corresponding webs of the pull-out rail. By manual pressure on an elastic part of the hook part can be unlocked by the webs, whereby the drawer can be separated from the pull-out rail.

When locking between the drawer and the pull-out, it is advantageous if the pull-out during installation of the drawer occupies a more or less predetermined position to the locking part, so that the locking part can lock as intended with the predetermined connection point of the extendable rail. If this position is not within a predetermined tolerance range, it would be possible for parts of the coupling device injection molded from plastic to be damaged by the sliding of the drawer onto the pull-out rail or even to be sheared off completely therefrom.

An apparatus according to the preamble of claim 1 is made US 20040227440 A1 known. Object of the present invention is therefore to propose a device of the type mentioned above while avoiding the above drawback.

This we according to the invention by the features of claim 1. Further advantageous embodiments of the invention are specified in the dependent subclaims.

According to the invention it is thus provided that the counter-holding part has at least one spring tongue.

By this spring tongue, it is possible that the drawer during assembly relative to the pull-out rail of the drawer pull-out in a direction transverse to the extension direction - is guided, in particular laterally - so that so the drawer is centered during assembly by the spring tongue relative to the pull-out and thus a - in particular lateral - clearance compensation of the drawer is brought about relative to the pull-out rail.

In one possible embodiment, it may be provided that the spring tongue form, together with the opposite latching part, an insertion funnel for the front end of the pull-out rail, wherein the width of the insertion funnel decreases in the mounting position in the direction of the drawer front panel.

The spring tongue may have a, preferably curved, inlet bevel through which the extendable rail can be pressed against the latching part when it is pushed into the device. It can also be provided that the spring tongue and / or the locking part is designed to be resilient in a direction transverse to the longitudinal direction of the rail or are so that any occurring position tolerances of the drawer relative to the extendable rail can be compensated. Depending on the installation position of the device, the spring tongue and / or the locking part may be resilient in the horizontal or in the vertical direction.

The drawer extension according to the invention has a to be fastened to a furniture body carcass rail, at least one displaceable relative to the carcass rail mounted pull-out rail and a device of the type in question through which a drawer is releasably connected to the pull-out of Schubladenausziehführung.

In a structurally simple solution can be provided when the locking part and the handle part are integrally formed. It is particularly advantageous if the device is made in one piece from plastic in its entirety. Such a device can thus be produced in a simple manner in the course of an injection molding process integrally from a thermoplastic material.

The drawer according to the invention is characterized by at least one drawer extension guide of the type mentioned above.

Fig. 1

eine perspektivische Ansicht eines Möbels mit Schubladen, welche in ihrer Gesamtheit an einer Schubladenausziehführung montierbar und demontierbar sind,

Fig. 2

eine perspektivische Ansicht einer an der Schubladenausziehführung befestigten Schublade,

Fig. 3a-3d

ein mögliches Ausführungsbeispiel einer Kupplungsvorrichtung in verschiedenen Ansichten,

Fig. 4

eine perspektivische Darstellung einer Schublade, welche über eine Trägerschiene lösbar mit einer ausziehbaren Schiene der Schubladenausziehführung verbindbar ist,

Fig. 5a, 5b

eine perspektivische Ansicht der Trägerschiene von unten mit einer daran montierten Kupplungsvorrichtung sowie eine vergrößerte Detaildarstellung hierzu,

Fig. 6a, 6b

eine Draufsicht auf die Trägerschiene von unten mit einer damit gekuppelten Ausziehschiene sowie eine vergrößerte Detaildarstellung hierzu,

Fig. 7a, 7b

Darstellungen von zwei verschiedenen Kupplungsvorrichtungen, wobei eine Kupplungsvorrichtung auf einer ersten Seite der Schublade und eine zweite Kupplungsvorrichtung auf der anderen Seite der Schublade angeordnet werden kann (links/rechts).

Further details and advantages of the present invention will be explained with reference to the following description of the figures. It shows or show:

Fig. 1

a perspective view of a cabinet with drawers, which are mounted and dismounted in its entirety on a drawer extension guide,

Fig. 2

a perspective view of a drawer attached to the drawer pull-out,

Fig. 3a-3d

A possible embodiment of a coupling device in different views,

Fig. 4

a perspective view of a drawer, which is detachably connectable via a carrier rail with an extendable rail of the drawer extension guide,

Fig. 5a, 5b

a perspective view of the support rail from below with a coupling device mounted thereon and an enlarged detail illustration of this,

Fig. 6a, 6b

a top view of the carrier rail from below with a pull-out rail coupled thereto and an enlarged detail illustration of this,

Fig. 7a, 7b

Representations of two different coupling devices, wherein a coupling device on a first side of the drawer and a second coupling device on the other side of the drawer can be arranged (left / right).

Fig. 1 shows a perspective view of a piece of furniture 1 with a plurality of drawers 2, which can be moved via drawer extension guides 3 relative to a furniture carcass 7 are stored. The drawer extension guides 3 each comprise a cabinet rail 4 to be fastened to the furniture carcass 7 and at least one rail 8 which can be pulled out relative thereto, the drawers 2 being detachably connectable to the extendable rails 8 via a device to be described later. Each drawer 2 are each associated with two drawer extension guides 3, which are pre-mounted on opposite side walls of the furniture body 7. The drawers 2 can be mounted and dismounted without the use of a tool on the extendable rails 8.

Fig. 2 shows a perspective view of a drawer 2, which is coupled to the drawer extension guide 3. The drawer 2 comprises a front panel 2a, side walls 2b, a drawer bottom 2c and a drawer rear wall 2d. Visible are the stationary carcass rail 4 and the relatively movable rail 8 of the drawer extension guide 3, wherein between the carcass rail 4 and the extendable rail 8, an additional displaceable middle rail 5 can be arranged so as to allow a full extension of the drawer 2 relative to the furniture body 7. At the rear end of the extendable rail 8, a stop with a - preferably adjustable - pin 6 is mounted, which is located in the mounted state of the drawer 2 in a designated opening of the drawer rear wall 2d. By adjusting wheel 15, the position of the pin 6 can be adjusted so that thereby also the position of the front panel 2a (and thus the outer joint pattern) is adjustable. When mounting the drawer 2, this is pushed onto the located in the closed position rail 8 until the pin 6 enters the intended opening of the drawer rear wall 2 d and thus defines the rear end stop of the drawer 2 relative to the rail 8. The front portion of the drawer 2 is releasably coupled via the coupling device to be described with the front end of the extendable rail 8.

Fig. 3a-3d show various views of the device 9, which is provided for releasably coupling the drawer 2 with the extendable rail 8 of the drawer extension guide 3. This device 9 has a resilient locking part 10 which is releasably latched with a predetermined connection point of the extendable rail 8. With the locking part 10 is designed for manual operation grip part 11 is connected, wherein by manual pressure on the handle part 11 in the direction of arrow 12a of the locking member 10 against its resilient Effect in the direction of arrow 12b is movable, so that the locking member 10 can be released from the predetermined connection point of the extendable rail 8 again. The locking part 10 and the handle part 11 can be connected to a base body 14 of the device 9 via a bending joint 13. The device 9 comprises a counter-holding part 15, which is arranged opposite the latching part 10, wherein the front-side end of the extendable rail 8 is received in the mounted state between the latching part 10 and the counter-holding part 15. The counter-holding part 15 comprises a spring tongue 16, which has a, preferably curved, inlet bevel for the front end of the extendable rail 8, whereby a lateral clearance compensation of the drawer 2 relative to the rail 8 can be brought about.

Fig. 3b shows a further perspective view of the device 9. The device 9 is injected in the embodiment shown in its entirety in one piece from plastic. The spring tongue 16 of the counter-holding part 15 and the resilient locking part 10 form an inlet funnel for the front end of the pull-out rail 8, so that the drawer 2 to be mounted can be centered relative to the pull-out rail 8. Thus, the handle member 11 can be moved in the direction of arrow 12a, an elongated slot 17 is provided between the base body 14 and the handle portion 11, which allows pivotal movement of the handle portion 11 relative to the base body 14. The device 9 further comprises injection-molded fastening dowels 18 with expanding wedges 18a, by means of which the device 9 can be fastened to the drawer 2, preferably to a carrier rail preassembled thereon.

Fig. 3c shows the device 9 in a perspective view from below. Visible are the molded fixing dowels 18, which are passed in a first assembly step through an opening of a (not shown here) support rail, whereupon in a further assembly step expanding wedges 18 a, which are stored at predetermined breaking points of the fastening dowel 18, detached from these predetermined breaking points and in the Fixing dowels 18 are pressed, so that the fixing dowels 18 are widened by the pressed in expanding wedges 18a in the mounting position and thus locked.

Fig. 3d shows a plan view of the device 9. The locking part 10 has a catch part 19, through which the device 9 (and thus the drawer 2) relative to the extendable rail 8 in a first depth position can be releasably locked. This way will a pre-positioning of the device 9 relative to the pull-out rail 8 brought about. Furthermore, the latching part 10 has at least one stop surface 20, by means of which the device 9 can be releasably locked in a second depth position deviating from the first depth position. It can be provided that the catch part 19 engage in the first depth position and the stop surface 20 in the second depth position in each case in one and the same recess of the extendable rail 8. The spring tongue 16 preferably has a free end, but it can also be provided that both ends of the spring tongue 16 are connected to form a gap with the base body 14 and with the counter-holding part 15.

Fig. 4 shows a perspective view of a support rail 22, which is connected in mounting position with a drawer 2. In addition, the drawer bottom 2c and the drawer rear wall 2d can be seen. The drawer bottom 2c has on at least one edge region a step-shaped fold 26, ie a recess open towards the edge of the drawer bottom 2c, which extends substantially over the entire length of the drawer bottom 2c. The fold 26 forms a vertically standing portion 26a and a horizontally extending portion 26b in the mounting position. By such a design of the drawer bottom 2c, the surface of the drawer bottom 2c placed deeper and closer to the upper edge of the extendable rail 8 (FIG. Fig. 1 ). The edge region of the drawer bottom 2c thus has a smaller thickness, without underneath the stability of the drawer bottom 2c suffers, since this local weakening is compensated by the intended support rail 22. The support rail 22 has a first horizontal abutment web 25 for engaging the underside of the drawer bottom 2c and an upper horizontal leg 23 for abutment with the horizontal portion 26b of the fold 26, the lower horizontal abutment web 25 and the upper horizontal leg 23 via a, preferably essentially vertical or curved, second abutment web 24 are connected to each other. For fastening the drawer bottom 2c relative to the support rail 22 a plurality of punched tabs 24a and 25a are provided which can be pressed in the direction of the drawer bottom 2c, whereby the drawer bottom 2c is fixed relative to the support rail 22 non-positively. With the support rail 22, a drawer side wall 2b is connected. It can be seen that the vertically extending abutment web 24 with the horizontal leg 23 and the drawer side wall 2b forming a U-profile, wherein the device in question 9 is arranged in mounting position within this U-profile of the support rail 22.

Fig. 5a shows a representation of the drawer side wall 2b in a perspective view from below. The drawer side wall 2b is connected to the support rail 22, to which the drawer bottom 2c (not shown here) is to be fastened. The support rail 22 has a U-profile, wherein the device 9 is attached to the front end of the support rail 22 within this U-profile of the support rail 22. For fastening the device 9, the fastening dowels 18 are used ( Fig. 3b ), these fastening dowels 18 are anchored to the horizontal leg 23 of the support rail 22. The device 9 can therefore be used in a comfortable manner from above into the U-profile of the support rail 22 and secured to the horizontal leg 23.

Fig. 5b shows an enlarged view of the in Fig. 5a circled area. The drawer 2 connected to the support rail 22 is thus in the assembly of the drawer 2 on the in Fig. 1 shown extendable rail 8 of the drawer extension guide 3 is pushed, wherein the rail 8 is guided within the U-profile of the support rail 22 and wherein the rail 8 in the direction of the arrow X in the device 9 retractable and latched there.

Fig. 6a shows the carrier rail 22 in a view from below. At the front end of the support rail 22, the device 9 is fixed, which is releasably coupled to a predetermined connection point of the extendable rail 8 of the drawer extension guide 3. Fig. 6b shows an enlarged detail view of the in Fig. 6a circled area. The predetermined connection point of the extendable rail 8 may be formed by a arranged on the rail 8 recess or arranged on the rail 8 locking edge on which the stop surface 20 of the locking member 10 can attack. Both the locking part 10 and the spring tongue 16 of the counter-holding part 15 are in this coupled position on the pull-out rail 8. By manual pressure on the handle portion 11 of the locking member 10 is releasably relative to the pull-out rail 8, whereby the drawer 2 can be removed in its entirety from the drawer extension guide 3.

Fig. 7a and Fig. 7b each show devices 9, wherein the in Fig. 7a shown device 9 on the left side of the drawer 2 and in Fig. 7b shown device 9 'on the right side of the drawer 2 can be arranged. In Fig. 7b It can be seen that the spring tongue 16 is provided with a stiffening 21 (for example, with a stiffening rib), which limits the flexibility of the spring tongue 16. Thus, a different degree of hardness of the spring tongues 16 can be brought about. This is particularly advantageous if the drawer 2 on the right side ( Fig. 7b ) is to be supported largely stable in the lateral direction, so that the lateral clearance compensation almost exclusively on the left side of the drawer ( Fig. 7a ) is compensated. The device 9 'in Fig. 7b has a carrier 30 which receives in the mounting position, the front end of the extendable rail 8. This carrier 30 protrudes in Fig. 7b close to the stop surface 20 zoom, so as to accommodate the extendable rail 8 on the right side largely stable in position. On the left side of the drawer 2 ( Fig. 7a ), however, the spring tongue 16, no stiffener 21, making it softer than the spring tongue 16 according to Fig. 7b is formed and can thus enable the desired lateral clearance compensation. The carrier 30 left ( Fig. 7a ) has a greater relative distance to the stop surface 20, so as to compensate for a lateral clearance between the device 9 and the rail 8. With the spring tongue 16, a stop 28 is connected, which abuts in the mounted position on the outside of the rail 8 and the in Fig. 7a left larger than in Fig. 7b is trained. Due to the softer design of the spring tongue 16 according to Fig. 7a this is also stronger than those according to Fig. 7b deformable, with the arrangement of a laterally enlarged stop 28 and larger lateral tolerances can be compensated. According to Fig. 7a the device 9 may also have a further tongue 29, which rests in the mounting position at the front end of the rail 8, wherein by the further tongue 29 in the latched position between the device 9 and the rail 8 any occurring longitudinal play of the device 9 in relation to Rail 8 is compensated. The tongue 29 is formed bendable in the longitudinal direction of the rail 8.

The longitudinal extension of the handle member 11 extends in the mounting position approximately parallel to the longitudinal extent of the rail 8, wherein the free end of the handle member 11 and the free end of the body 14 are substantially at the same height. In this way, a compact construction of the device 9 and an easily accessible operation of the handle member 11 can be made possible. At one possible Embodiment can also be provided that the device 9 is at least made in two parts, wherein an integrally formed first leg - consisting of the counter-holding part 15 and the base body 14 - with a one-piece second leg - consisting of the locking part 10 and the handle part 11 - via a Helical spring are biased. The helical spring also serves as a hinge, so that the arrangement of a bending joint 13 (FIG. Fig. 3a ) can be omitted.

The present invention is not limited to the embodiment shown, but includes any technical equivalents that may fall within the scope of the following claims. Also, the location information chosen in the description, such as top, bottom, side, left, right, etc. related to the immediately described and illustrated figure and are mutatis mutandis to transfer to the new situation in a change in position.

Claims (15)

1. A device (9) for releasably coupling a drawer (2) to an extendable rail (8) of a drawer extension guide (3), comprising:

   - a latching portion (10) which can be releasably arrested for releasably coupling the drawer (2) to the extendable rail (8) of the drawer extension guide (3),

   - a hand-actuated handle portion (11) for releasing the latching portion (10) relative to the extendable rail (8) of the drawer extension guide (3),

   - a counterpart holding portion (15), wherein the rail (8), in the mounted position, is accommodated between the counterpart holding portion (15) and the latching portion (10),

   - wherein the latching portion (10) is movable in a direction facing away from the counterpart holding portion (15) by hand pressure applied on the handle portion (11),
   characterized in that the counterpart holding portion (15) has at least one spring tongue (16).
2. The device according to claim 1, characterized in that the spring tongue (16) has a, preferably curved, run-in incline for pressing the rail (8) against the latching portion (10) upon insertion of the rail into the device (9).
3. The device according to claim 1 or 2, characterized in that the spring tongue (16) and the latching portion (10) are resilient in a direction extending transversely relative to the longitudinal direction of the rail (8).
4. The device according to one of the claims 1 to 3, characterized in that the spring tongue (16) has a stiffening member (21).
5. The device according to one of the claims 1 to 4, characterized in that a free end of the handle portion (11) is located at an end of the device (9) opposite to the latching portion (10).
6. The device according to one of the claims 1 to 5, characterized in that the latching portion (10) has a catch portion (19) by which the device (9) can be releasably arrested relative to the rail (8) in a first depth position.
7. The device according to claim 6, characterized in that the latching portion (10) has at least one abutment surface (20) for releasably arresting the device (9) in a second depth position differing from the first depth position.
8. The device according to claim 7, characterized in that the catch portion (19) in the first depth position and the abutment surface (20) in the second depth position respectively engage into one and the same opening in the extendable rail (8).
9. The device according to one of the claims 1 to 8, characterized in that the device (9) has a further tongue (29) which, in the mounted position, bears against the front end of the rail (8) so as to compensate for any longitudinal play between the device (1) and the rail (8) in the latched position between the device (9) and the rail (8).
10. The device according to one of the claims 1 to 9, characterized in that the device (9) has at least one injection-molded fixing dowel (18) to fix the device (9) to a carrier rail (22) to be mounted to the drawer (2).
11. The device according to one of the claims 1 to 10, characterized in that the device (9) is formed of plastic material and has a one-piece construction.
12. A drawer extension guide (3) comprising a carcass rail (4) to be fixed to a furniture carcass (7), at least one rail (8) which is extendable relative to the carcass rail (4), and a device (9) according to one of the claims 1 to 11, by which a drawer (2) is to be releasably connected to the extendable rail (8).
13. A drawer (2) comprising at least one drawer extension guide (3) according to claim 12.
14. The drawer according to claim 13, characterized in that a carrier rail (22) is premounted to the drawer (2), wherein the carrier rail (22) can be releasably coupled by the device (9) relative to the extendable rail (8).
15. The drawer according to claim 13 or 14, characterized in that a first device (9') is arranged at one side of the drawer (2) and a second device (9) is arranged on the other side of the drawer (2), wherein the spring tongue (16) of the first device (9'), preferably by providing a stiffening member (21), is configured to be stiffer than the spring tongue (16) of the second device (9).

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