EP1405581A1 - Self-closing device for drawers - Google Patents

Abstract

The invention relates to a drawer system with automatic retraction, in which the kinetic energy during the opening process of a drawer (1) is stored along the entire length of the drawer in the form of potential energy in an energy store (11), which potential energy via a after releasing the drawer (1) Speed controller (12) regulates slowly and uniformly again along the entire entry length to the drawer (1) in the form of kinetic energy. The pull-in system according to the invention has the advantage that after the drawer (1) is unlocked and released, a safe pull-in movement is ensured without the drawer (1) reaching too high a speed on this pull-in path. As a result, the drawer (1) closes softly and almost silently without fear of damage to the drawer (1) or its contents. <IMAGE>

Description

The invention relates to a drawer system with automatic feeder according to the Preamble of the independent claims.

Such drawer system with automatic feed are from the prior art Technology is well known, for example from AT 395 099 B, AT 393 444 B, AT 394 133 B, EP 0 391 221 A1 and US-PS-3,658,398.

With the pull-out guide for drawers of the AT 395 099 B, the Guides slanting backwards down into the body. In the stripped Condition the drawer rail is held by a locking device. The elastic swivel part of the locking device is pressed by pressing Drawer unlocked. After unlocking, the drawer moves due to the Gravity due to the oblique guides from the extended position into the retracted position in the body.

U.S. Patent No. 3,658,398 shows a locking mechanism of one Pull-out drawer of a piece of furniture, the guide rails of the Drawer are also inclined backwards into the furniture body. In the the drawer is pulled out by a spring bolt of the Locking mechanism held that unlocks before inserting the drawer must become.

AT 393 444 B shows a furniture drawer, the pull-out rails at an angle to Drawer bottom are mounted in the back of the furniture body and in the front are rotatably mounted on the cabinet rail in the area of the front of the furniture. The The drawer tilts backwards when pushed into the furniture body and is automatically drawn in by the influence of gravity. At the Pulling out tilts the drawer forward and down and moves into the front End position and obese stand there.

A locking device for drawers is known from AT 394 133 B. which the drawer in the rear of their driveway into the Furniture body pulls. The locking device is by an axis rotatable and spring-loaded lever with roller, which roller along a partly two-track backdrop under spring pressure to be led. The roller runs in a flat manner when the drawer is pulled out Track with little effort for the user, making the spring of the Closing lever is cocked. The roller runs when the drawer is pushed in in a steep track with great pull-in force from the previously tensioned spring back, whereby the drawer is automatically drawn into the furniture body. Until the drawer is approximately in the rear third of the insertion path, no closing forces of the spring of the locking device on the drawer exercised. The closing device is therefore only in the last third of the maximum Insertion path of the drawer is effective.

The European patent application EP 0 391 221 A1 shows a locking device for drawers, which the drawer over a longer way into the body pulls, but only in the rear third of the drawer's insertion path. Becomes When the drawer is opened, a tilting segment becomes along a guide groove moved and biased a coil spring that with one end on Tilting segment and is attached with its other end to the furniture body. To This resolves with a certain extension path (in the first third of the extension path) Tilt segment from the drawer and jammed in an arc of the guide groove at the point of disconnection from the drawer. The drawer is thus wider Pull-out area freely movable without spring pulling or pulling action. If the drawer is closed, the drawer or its couples Drawer rail (in the last third of the insertion path) in the under Spring preloaded and clamped in the guide groove at the disengagement location Tilt segment, which unlocks the drawer with a slight push becomes. So that the tilting segment under the biasing force of the spring in the Guide groove are drawn into the furniture body, causing the coupled Drawer is pulled into the closed position. Here too is the The locking device is therefore only in the last third of the insertion path Drawer effective.

The retraction or closing device according to the state of the above Technology have the disadvantage that the drawers with too much swing in the Body pulled, pushed or with diagonally mounted guides through the Be accelerated by gravity.

Especially with the full-length infeed systems, the drawers are on your entire insertion path accelerated strongly. For spring loaded full length feeders reach empty, i.e. light drawers, high Top speeds while locking devices with rear-down Retract inclined guides with heavily loaded drawers quickly.

Common to both systems is that due to the accelerating mass Resulting kinetic energy (force) completely reduced in the closed position must become. Stops in the end position between the movable The drawer rail and the fixed body rail cause an impact when the energy is almost suddenly reduced by changes in shape (elastic impact) becomes. This impact has a destructive effect on all components and is due to the Noise development not portable. Elastic buffer elements can do this Don't solve the stop problem.

Locking devices that are only effective in the rear area have the Disadvantage that the drawers are pushed a long way by hand must be until the pull-in force acts, or in an open position stop and have a disturbing effect there.

The object of the invention is to provide a drawer system with automatic feed create with the drawers already out of their fully open positions automatically and in their retraction speed regulated in the furniture body retract.

The invention is achieved in that the kinetic energy during Opening a drawer along the entire length of the drawer in shape of potential energy is stored in an energy store, which potential energy after releasing the drawer over one Speed controller regulates slowly and uniformly again along the total entry length to the drawer in the form of kinetic energy is delivered.

The locking system or feed system according to the invention has the advantage that after unlocking or releasing the drawer, a safe one Retraction movement is ensured without the drawer on this Feed speed reached too high. This closes the Drawer soft and almost silent, without damaging the Drawer or the contents of the drawer can occur.

Preferred embodiments are in the claims and in the Description of the figures explained in more detail.

It is particularly preferred that the drawer be closed by at least one Holding system is kept in the open position, which the user must decouple, before the drawer is drawn in by the automatic feeder. However, this is not necessary for a solution, since only an energy storage device and a Movement controllers are needed to keep the drawer out of control To let the body retract. In principle, the drawer can also be used by the user kept in the (partially) open state, then the desired parts with a Be taken out of or put into it and then the user releases the drawer, causing the drawer to pass through the automatic retraction system according to the invention runs fully into the body, without being damaged.

However, a holding system for keeping the opened drawer open is preferred, so that the user can use both hands to put and clear objects which has or is free from the drawer, and in particular a holding system that acts between the rails.

In the case of a full extension drawer system, the holding system then acts between Drawer rail and middle rail, and / or between cabinet rail and Middle rail.

In another embodiment of the invention, the holding system for the Keeping the drawer open between a shaft of the energy store and / or of the speed controller and the drawer work which holding system especially on the rear wall or the rear floor of the drawer is appropriate.

The holding system is preferably a releasable positive locking connection trained or as a releasable positive and / or frictional Clamp connection with partially elastically resiliently deformable components.

The energy store essential for the invention, however, interacts moving parts of the drawer slide, especially the drawer itself, and stationary parts of the drawer slide, especially the parts of the Furniture body to which the rails are attached.

In the case of a full extension drawer system, the energy store has a preferred effect between drawer rail and middle rail, or between cabinet rail and center rail or a combination thereof.

The energy store can be of any design, but it preferably contains an elastically deformable spring, e.g. one or more spiral spring (s) or one or more leg spring (s) or one or more cylindrical Coil spring (s) or a combination thereof, with the springs preferred are made of metal and / or plastic.

The spiral spring (s) or leg spring (s) are then advantageously with a End is attached to a shaft and the other end to the drawer, the shaft being meshed with a rack via a pinion Furniture body stands.

The spring of the energy storage device is, like the one described above Holding system preferred at the back or at the bottom of the drawer in the Attached near the back of the drawer.

The speed controller essential for the invention has a preferred effect between cabinet and drawer or between cabinet rail and the moving rail (s) or a combination thereof.

In a preferred embodiment, the speed controller is on the Middle rail arranged and acts between all rails of the Guidance system.

In particular, the speed controller contains at least one rack at least one pinion and at least one damper / brake, which together are connected and work together.

The speed controller essential for the invention, that for the invention essential energy storage and the optional, but preferably used Holding system for the (partially or fully) extended drawer are either arranged separately from each other on the drawer system, or preferably in a common area, especially in the rear area at the back or the rear underside of the drawer on the drawer system arranged.

In a preferred embodiment of the invention it is provided that parts of the speed controller, parts of the energy storage and parts of the existing holding system of the drawer in the open state on a common shaft are arranged. This shaft is then a pinion in the Tooth engagement with a rack of the furniture body, the longitudinal axis of which is parallel to the rails or the drawer's extension / retraction path. hereby space and weight can be saved, as well as maintenance or Repairs are made easier.

In the feed system according to the invention, the kinetic energy of the Pulling out the drawer in an energy store as potential energy saved, which is then when the drawer is automatically drawn into the Furniture body is converted back into kinetic energy, the Speed is regulated by a control device, in particular in such a way that the drawer is not accelerated during its moving in or especially during the beginning of the feed path only slightly to one constant maximum permissible speed is accelerated.

The invention is explained in more detail below with the aid of several embodiments described, which, however, are to be understood only as examples and not restrictive are.

Figur 1:

zeigt eine Schublade in Schließstellung in perspektivischer Ansicht;

Figur 2:

zeigt die Schublade nach Figur 1 in Offenstellung in perspektivischer Ansicht;

Figur 3:

zeigt eine Halteklinke als Ausschnitt aus Figur 1 und Figur 2 in perspektivischer Ansicht;

Figur 4:

zeigt eine Seitenansicht einer Schublade mit Ausschnitten im Seitenwand-Dekor mit der erfindungsgemäßen Kombination einer Spiralfeder als Energiespeicher, einem Geschwindigkeitsregler als Rotationsdämpfer ausgeführt, sowie eine Halteklinke;

Figur 5:

zeigt die Halteklinke als Sperrklinke ausgeführt;

Figur 6:

zeigt den Rotationsdämpfer mit Zahnrad, welches mit der Zahnstange der Schubladenschiene kämmt;

Figur 7:

zeigt eine Schublade, an deren Rückwand eine Welle gelagert ist, die mit ihrem Ritzel die gespeicherte Energie der Spiralfeder auf die ortsfeste Zahnstange überträgt, wobei auf der selben Welle das Klinkenpaar und das Ritzelpaar zum Regler sitzt;

Figur 8:

zeigt die Lagerung der Antriebs- und Reglerwelle mit Zahnritzel und Zahnstange;

Figur 9:

Beispiel einer Klinke mit Klinkenrad;

Figur 10:

Beispiel einer Klinke mit Klinkenrad;

Figur 11:

zeigt in vergrößerter Darstellung die Spiralfeder als Speicher und Antrieb auf der Antriebswelle montiert mit dem Geschwindigkeitsregler z. B. einem Rotationsdämpfer;

Figur 12:

zeigt ein weiteres Ausführungsbeispiel mit einer wieder an der Rückwand gelagerten Welle aber mit einer Schenkelfeder als Energiespeicher und Antrieb sowie einer Lamellen-Rücklaufsperre;

Figur 13:

zeigt vergrößert die montierten Schenkelfeder;

Figur 14:

zeigt den Geschwindigkeitsregler mit einer alternativen Ausführung zur Klinke;

Figur 15:

zeigt die alternative Ausführung zur Klinke als spreizbare Lamellen aus elastischem Material;

Figur 16, 17 und 18:

zeigen die Schublade mit Antrieb und Sperre wie gehabt, aber mit einem anderen Regler;

Figur 20:

zeigt einen Teilausschnitt vom Fliehkraftregler;

Figur 21:

zeigt eine Schublade mit Korpus mit schräg nach hinten-unten eingebauter Führung;

Figur 22:

zeigt den Dämpfungsantrieb;

Figur 23:

zeigt ein Schubladenhaltesystem als weitere Alternative zur Halteklinke;

Figur 24:

Prinzip wie in Figur 23, nur ist der Gehäuseboden starr und der Stift elastisch;

Figur 25:

zeigt eine ausgezogene Schubladenführung für einen Vollauszug, wobei hier die Laufwagen mit je einer Schraubenfeder beaufschlagt sind, welche an den Enden der Mittelschiene befestigt sind;

Figur 26:

zeigt die Schubladenführung nach Figur 25 bei geschlossener Schublade;

Figur 27:

zeigt die Schubladenführung nach Figur 26 bei geschlossener Schublade von der Rückseite her gesehen;

Figur 28:

zeigt die Schubladenführung nach Figur 27 in einer Seitenansicht im Schnitt;

Figur 29:

zeigt die Anlage des linken Endes der Schraubenfeder an der Mittelschiene in einer vergrößerten Darstellung auf der linken Seite der Figur 27;

Figur 30:

zeigt die Anlage des rechten Endes der Schraubenfeder an dem Rollenwagen in einer vergrößerten Darstellung auf der rechten Seite der Figur 27;

Figur 31:

zeigt eine vergrößerte Darstellung der beiden Ritzel im Eingriff mit den Zahnstangen;

Figuren 32 bis 35:

zeigen perspektivische Darstellungen der Schubladenführung nach Figur 27 im eingefahrenen Zustand (Figuren 32 und 35) und im ausgefahrenen Zustand (Figuren 33 und 34) der Schublade.

Show it:

Figure 1:

shows a drawer in the closed position in a perspective view;

Figure 2:

shows the drawer of Figure 1 in the open position in a perspective view;

Figure 3:

shows a retaining pawl as a detail from Figure 1 and Figure 2 in a perspective view;

Figure 4:

shows a side view of a drawer with cutouts in the side wall decor with the inventive combination of a coil spring as an energy store, a speed controller as a rotary damper, and a holding pawl;

Figure 5:

shows the pawl executed as a pawl;

Figure 6:

shows the rotary damper with gear, which meshes with the rack of the drawer rail;

Figure 7:

shows a drawer, on the rear wall of which a shaft is mounted, which transmits the stored energy of the coil spring to the stationary rack with its pinion, the pair of pawls and the pair of pinions to the regulator being seated on the same shaft;

Figure 8:

shows the storage of the drive and regulator shaft with pinion and rack;

Figure 9:

Example of a ratchet with ratchet wheel;

Figure 10:

Example of a ratchet with ratchet wheel;

Figure 11:

shows in an enlarged view the coil spring as a memory and drive mounted on the drive shaft with the speed controller z. B. a rotary damper;

Figure 12:

shows a further embodiment with a shaft mounted again on the rear wall but with a leg spring as an energy store and drive and a lamella backstop;

Figure 13:

shows the assembled leg spring enlarged;

Figure 14:

shows the speed controller with an alternative version to the jack;

Figure 15:

shows the alternative version to the jack as expandable slats made of elastic material;

Figure 16, 17 and 18:

show the drawer with drive and lock as usual, but with a different regulator;

Figure 20:

shows a partial section of the governor;

Figure 21:

shows a drawer with a body with an inclined back-down guide;

Figure 22:

shows the damping drive;

Figure 23:

shows a drawer holding system as a further alternative to the latch;

Figure 24:

Principle as in Figure 23, only the case base is rigid and the pin is elastic;

Figure 25:

shows an extended drawer guide for a full extension, here the carriages are each loaded with a coil spring, which are attached to the ends of the center rail;

Figure 26:

shows the drawer guide according to Figure 25 with the drawer closed;

Figure 27:

shows the drawer slide according to FIG. 26 when the drawer is closed viewed from the rear;

Figure 28:

shows the drawer slide according to Figure 27 in a side view in section;

Figure 29:

shows the contact of the left end of the coil spring on the central rail in an enlarged view on the left side of Figure 27;

Figure 30:

shows the contact of the right end of the coil spring on the roller carriage in an enlarged view on the right side of FIG. 27;

Figure 31:

shows an enlarged view of the two pinions in engagement with the racks;

Figures 32 to 35:

show perspective views of the drawer guide according to Figure 27 in the retracted state (Figures 32 and 35) and in the extended state (Figures 33 and 34) of the drawer.

Figures 1-6 show a first drawer system according to the invention, wherein a full extract is shown. However, the invention can also be used for partial extracts can be used easily.

The full extension shown in Figure 1 includes a pair of a rail system 5-8, which via bracket 9 with a furniture part 17 (shown in FIG. 7) (Body) is firmly connected. Since there are two identical, mirror-symmetrical Rail systems 5-9 per drawer 1 are required, only in the following described on a rail system 5-9 on one side of the drawer 1.

On the bracket 9, the body-fixed body rail 8 is attached, the a roller carriage (item 51 in Figure 27) longitudinally displaceable on a central rail 7 is mounted, which is via a further roller carriage (item 50 in Figure 27) is arranged longitudinally displaceably on a drawer rail 6, on which a Decor 5 is attached, which is the side part of the drawer 1.

On the decor 5, the front panel 2 of the drawer 1 is then arranged in the front, the rear Rear wall 3 and below the bottom of the drawer 1.

Figure 2 shows the same drawer 1 as Figure 1, but not in retracted state, but with the drawer extended 1.

In Figures 1 and 2, a pawl 10 can be seen in the right part of the picture is shown enlarged in Figure 3. The pawl 10 is located on the Drawer rail 6 and engages in a drawer 1 fully extended Recess or a projection (not shown) latching and holding the Drawer 1 in the pull-out position until the user releases the pawl 10 manually disengages.

Figure 4 shows a side view of the drawer 1 according to Figures 1-3, with Cutouts in the side wall decor 5, below which is in the upper left area a spiral spring 11 is located as an energy storage device, which is not described here shown mechanics during the opening of the drawer 1 potential Energy is stored until the drawer 1 is pulled out in the end position according to FIG. 2 is. Here then the lock 10 engages and holds the drawer 1 in the end position until the user releases the lock 10. Figure 5 shows an enlarged view of the Lock 10.

After unlocking the lock 10 is contained in the coil spring 11 potential energy in the form of kinetic energy back to the drawer 1 issued so that it automatically returns to the retracted position retracts.

So that this retraction does not happen unregulated, is in the front area Drawer 1, i.e. behind the panel 2, in the decor 5 a speed controller 12 available. This brakes the speed of the retracting drawer 1 such that a maximum speed is not exceeded. In particular prevents the controller 12 from unintentionally accelerating the drawer, which is a Damage to the drawer itself, but also to the items it contains could result.

The speed controller 12 includes a rack 15 which engages with a pinion 13 stands on a shaft with a speed damper 14 lies. The rack 15 is on the body 17 or the stationary Body rail 8 arranged, the pinion on a part 2-5 of the drawer 1 or on a moving rail 6 or 7. Figure 6 shows an enlarged view of the tooth mesh the pinion 13 with the rack 15 in the controller 12 with damper 14.

Figures 7-10 show another embodiment of the invention with a drawer 16, on the rear wall 3, a shaft 24 is mounted, which with its pinion 21 stored energy of the coil spring 19 is transmitted to the stationary rack 23. The pair of pawls 18 and the pair of pinions 25, 26 are seated on the same shaft 24 Controller.

The shaft 24 can be mounted on one side and only supported via a bearing 27 be, or the shaft 24 can be stored over several bearings and in particular also for side stabilization on both sides of the drawer 16 be mounted on the body 17.

The shaft 24 serves several purposes, namely once as a drive shaft and other than regulator shaft. If the drawer 16 is pulled out of the body 17, then the shaft 24 rotates due to the meshing of the end attached pinion 21 with the rack 23, which is attached to the body, in Direction of the longitudinal axis of the drawer 16. The linear movement of the Drawer 16 implemented in a rotational movement of the shaft 24 and on the Spiral spring 19 located on shaft 24 is tensioned. The kinetic energy of the Movement of the drawer and at the same time the shaft 24 is then in potential Energy of the spring 19 implemented.

After triggering the pair of latches 18, the drawer 16 is removed from it Pull-out position retracted into the body due to the conversion the potential energy of the spring 19 in the form of kinetic energy Rotational movement of the shaft 24 and simultaneous rolling of the pinion 21 on the Rack 23, whereby the drawer moves linearly into the body 17. The retracting the drawer 16 into the body 17 is controlled by the Speed controller 20.

Figure 8 shows the mounting of the drive and regulator shaft 24 with pinion 21 and Rack fixed to the body 23.

Figures 9 and 10 show an example of a pawl 29 with an elastic spring Pawl wheel 28. The pawl 29 is in the extended state of the drawer 16 automatically pressed on the resilient ratchet wheel 28, so that a The movement is inhibited. The drawer 16 is thus completely stand open without the energy storage drawer 16 back can fetch. Only when the user disengages the pawl 29 from the ratchet wheel 28 brings, the drawer due to the force of the tensioned spring 19 pulled into the body 17.

FIG. 11 shows the spring 19, one end of which is attached to the shaft 24, and the other end of which is attached to the rear wall 3 of the drawer 16. at Rotation of the shaft 24, the spring 19 can thus be tensioned and the Tensioned spring 19 can then again when the pair of pawls 18 is unlocked relax and turn the shaft 24.

In addition to the spring 19, the regulator 20 can be seen in FIG. 11, the one with a pinion 26 is in engagement with a pinion 25 on the shaft 24. The pinion 26 of the regulator 20 is mounted on a further shaft of the damper 22. Thus, the Shaft 24, which is driven by the relaxation of the spring 19, only in Rotate limits specified by the controller 20 or its damper 22 are.

Figures 12 to 15 show a further embodiment of the invention with a Drawer 30, which has the same components as those previously described drawer 16 according to Figures 7 to 11, with the same Reference numerals are provided.

In contrast to the drawer 16 according to FIGS. 7 to 11, the drawer 30 shows not a coil spring as an energy store, but a leg spring 31, which around the Shaft 24 is wound and fixed at one end to the shaft 24, and the other end via a clamp to the rear wall 3 of the drawer 30 connected is. The leg spring 31 is a torsion spring and leaves natural several turns of the shaft 24 until the drawer 30 is in complete Pull-out position.

Another difference is another latching of the drawer 30 in perfect pull-out position in the form of a slat return lock 32 with elastic slats 33 shown on the shaft 24. The slat backstop 32 can then be disengaged in the pull-out position of the drawer 30 brought so that the drawer 30 by the stored energy of the Leg spring 31 back into the body 17 moves to the end position.

Figures 16 to 20 show a further embodiment of the invention with a Drawer 34, which has the same components as those previously described drawers 16 and 30 according to Figures 7 to 11 and 12 to 15, with are provided with the same reference numerals.

Figures 17 and 18 again show the same pairs of clamps 18 and Storage spring 19 on the shaft 24.

In contrast to the drawer 16 according to FIGS. 7 to 11, the drawer 34 shows another speed controller 35, the worm 37 with a Worm gear 36 meshes on shaft 24, as well in the enlarged view 19 can be seen. The worm 37 is with a centrifugal governor 38 Weights 39 connected, which acts as a speed damper. Snail 37 and centrifugal governor 38 with weights 39 are on a bracket 40 on the Rear wall 3 of the drawer 34 mounted. This speed damper is preferably trained as he has been in rotary dial telephones for decades is used, which works extremely reliably.

Instead of a rotary damper as a regulator with a damping medium a governor 38 is used. A worm wheel 36 drives a worm 37 with a larger translation. As a result, weights 39 with Brake pads pressed against the inner wall of a cylinder by centrifugal force this limits the number of revolutions and the drawer inlet speed braked.

In Figure 20 is an enlarged view of the centrifugal controller 38 with weights 39 shown.

FIG. 21 shows another embodiment of the invention with a drawer 41 Guide 6-8 installed obliquely to the rear and down, whereby the damper or Controller is attached to the back of the drawer so that its drive pinion is in the toothed rail attached to the body engages. In Figure 22 the Speed controller 42 is shown enlarged, which with its shaft 46 the drawer rear wall 3 is attached so that its drive pinion 43 in the the toothed rail 45 fastened to the furniture body 17 engages, the pinion 43 passing through the damper 44 is damped or braked on the same shaft 46.

According to the figures 23 and 24 on the same shaft 46 of the Speed controller 42 (or on a separate shaft) a variant of a Locking pairing 47-49 shown, the drawer 41 in the completely out the body 17 should hold the drawn position until the user is in this position unlatched.

The locking pair 47-49 has a housing 47 in which a locking wheel 48 rotates the shaft 46 is received. The ratchet wheel 48 works with a pin 49 together, which in the end position of the extended drawer in the housing 47 retracts. 23 shows an elastic housing 47a, in particular more elastic Shown housing bottom, which clamps a rigid pin 49a, whereas in Figure 24 a rigid housing 47b clamps an elastically resilient pin 49b.

A housing 47 thus rotates a motor driven by the regulator shaft 46 gear ratchet 48. A pin 49 is against the bottom of the housing 47 pressed. The resistance from the elastic bottom 47a or from the elastic Pin 49b holds the drawer 41 in the open position. Also a combination between elastic bottom elastic housing 47a and elastic pin 49b possible.

Figures 25 to 35 show another variant of the invention with a Energy storage in the form of coil springs 52, 53 and one Speed controller 59, which acts between the rails 6-8. Same components as in the previously described figures are here with the same reference numerals Mistake. For reasons of clarity, the drawer itself was used here as the furniture body is also not shown.

A housing driven by the regulator shaft rotates gear-shaped ratchet wheel. A pin is pressed against the elastic floor. The resistance from the floor keeps the drawer open.

Figure 25 shows an extended drawer guide for a full extension, with the usual rails 6-8, namely the drawer rail 6, the middle rail 7 and the body rail 8 with the two mounting brackets 9. Between the Rails 6, 7 and 7, 8 are conventional roller carriages. Figure 26 shows the drawer guide according to Figure 25 in the retracted state.

FIG. 27 now shows the drawer guide according to FIG. 26 when the drawer is closed Drawer seen from the back where the interior of the rails is easier to see. The roller carriage 50 between the drawer rail 6 and Center rail 7, as well as the roller carriage 51 between center rail 7 and Body rail 8 are each loaded with a coil spring 52, 53, which with rest at their other end on contact plates 54, 55 of the center rail 7.

If the drawer is now pulled out of the furniture body (not shown), then the coil springs 52, 53 between the center rail 7 and the Roller carriages 50, 51 elongated and in the form of kinetic energy of potential energy stored in them. The drawer is then replaced by a corresponding locking device (not shown) held in the open position until the user unlatches them and thus the drawer under the effect of Coil springs 52, 53 retract into the furniture body. The saved potential energy of the coil springs 52, 53 is thus converted back into kinetic Energy is transformed back until the drawer is back in the end position in the body located.

In order not to pull the drawer in uncontrolled and accelerating speed controller 59 between the rails 6-8 provided, the function of which will be described later in FIG. 31.

Figure 28 shows the drawer guide with the rails 6-8 and the angle 9 of Figure 27 in a side view in section.

Figure 29 shows an example of the installation and attachment of the left end of the Coil spring 52 on the central rail 7 in an enlarged view the left side of Figure 27. Figure 30 shows the installation and attachment of the right end of the coil spring 52 on the roller carriage 50 in one Enlarged representation on the right side of Figure 27. The same applies of course also for the second coil spring 53, which is between the middle rail 7 and Roller carriage 51 is arranged and on the contact plate 53 of the center rail 7 is supported and attached there.

FIG. 31 now shows an enlarged illustration of the speed controller 59, as well as the synchronization of the roller carriages 50, 51 arranged there with the middle rail 7. To synchronize the roller carriages 50, 51 is like Usually a (smaller here) pinion 56 on the middle rail 7 rotatable but stationary arranged, which is in engagement with located on the roller carriage 50, 51 Racks 57, 58. This ensures that the roller carriage 50, 51 when The drawer does not move in or out differently, but rather at the same time and uniformly. On the same axis of the synchronizing pinion 56 is rotatable but stationary on the middle rail 7 another (here larger) pinion 60 is provided, which is in engagement with further racks 61, 62 on the Rails 6, 8. Through this pinion 60, the rails themselves become one another synchronized.

Through the two pinions 56 and 60, the one stored in the springs 52, 53 Energy when retracting the drawer synchronously from the middle rail 7 to the transferred two roller carriages 50, 51 and also synchronously to the other two Rails, on drawer rail 6 and cabinet rail 8.

The is also on the same axis as the pinion 56, 60 Speed damper 63, for a controlled retraction of the drawer provides.

Figures 32 to 35 show again the execution of the drawer guide according to Figures 25 to 31 in perspective views for better Illustration. Figures 32 and 35 show the drawer guide in retracted state and Figures 33 and 34 in the extended state of Drawer guide or the drawer (not shown).

drawing Legend

1.

drawer

Second

Front panel of the drawer (cover)

Third

Rear wall of the drawer

4th

Bottom of the drawer

5th

Decorative sidewall

6th

drawer rail

7th

middle rail

8th.

cabinet member

9th

Mounting bracket for cabinet rail

10th

Holding pawl or pawl

11th

Coil spring as an energy store

12th

cruise control

13th

gear

14th

damper

15th

rack

16th

drawer

17th

furniture body

18th

Pawl or pawl pair

19th

Spiral spring as energy storage on shaft 4 and rear wall 3

20th

cruise control

21st

gear

22nd

Damper on rear wall 3

23rd

Rack, body-proof

24th

wave

25th

Pinion on shaft 24

26th

Pinion on damper 22

27th

Bearing shaft 24

28th

elastic ratchet wheel on shaft 24

29th

Jack on rear wall 3

30th

drawer

31st

Leg spring

32nd

Fin backstop

33rd

elastic slats

34th

drawer

35th

cruise control

36th

worm

37th

slug

38th

governor

39th

weights

40th

bracket

41st

drawer

42nd

cruise control

43rd

Gear from 42 to 3

44th

Damper from 42 to 3

45th

Rack from 42 on body

46th

governor shaft

47th

Housing, 47a, 47b

48th

ratchet wheel

49th

Pen, 49a, 49b

50th

Roller carriage between 6 and 7

51st

Roller carriage between 8 and 7

52nd

Coil spring between 7 and 50

53rd

Coil spring between 7 and 51

54th

Contact plate at 7 for 52

55th

Contact plate at 7 for 53

56th

Synchronizing pinion on 7 for 57 and 58

57th

Rack of 50

58th

Rack of 51

59th

cruise control

60th

Sprocket on 7 between 61 and 62

61st

Rack of 6

62nd

Rack of 8

63rd

damper

Claims (23)

Drawer system, especially for furniture, with automatic pull-in of the drawer, which is longitudinally displaceable on rails (6-8), with an energy store, which stores the kinetic energy in the form of potential energy when the drawer is pulled out, which potential energy when the drawer is retracted is delivered to the drawer in the form of kinetic energy, characterized in that the kinetic energy during the opening process of the drawer (1, 16, 30, 34, 41) along approximately the entire extension length in the form of potential energy in an energy store (11, 19 , 31, 52, 53) is stored, which potential energy after releasing the drawer (1, 16, 30, 34, 41) via a speed controller (12, 20, 35, 42, 59) is regulated slowly and uniformly again along approximately the total run-in length is given to the drawer (1, 16, 30, 34, 41) in the form of kinetic energy, so that it automatically moves into its retracted end position t. Drawer system according to claim 1, characterized in that the energy store (11, 19, 31) acts between the drawer (16, 30, 34) and the furniture body (17) to which the rails (6-8) are attached. Drawer system according to Claim 1 or 2, characterized in that the energy store (52, 53) acts in the case of a full extension drawer system with a body rail (8), middle rail (7) and drawer rail (6) between the drawer rail (6) and the middle rail (7), and / or between the body rail (8) and the middle rail (7). Drawer system according to one of claims 1 to 3, characterized in that the energy store (11, 19, 31, 52, 53) contains at least one elastically deformable spring. Drawer system according to Claim 4, characterized in that the deformable spring of the energy store (11, 19, 31, 52, 53) has at least one spiral spring (11, 19) and / or at least one leg spring (31) and / or at least one helical spring (52 , 53) contains. Drawer system according to claim 5, characterized in that the spring (11, 19, 31, 52, 53) is formed from metal and / or plastic. Drawer system according to one of claims 4 to 6, characterized in that the spring (11, 19, 31) is attached at one end to a shaft (24) and at the other end to the drawer (16, 30, 34), wherein the shaft (24) is in meshing engagement with a rack (23) of the furniture body (17) via a pinion (21), the longitudinal axis of which is parallel to the rails (6-8) or the extension / withdrawal path of the drawer (16, 30 , 34, 41) runs. Drawer system according to one of Claims 4 to 7, characterized in that the spring (11, 19, 31) is attached to the rear (3) of the drawer (16, 30, 34). Drawer system according to one of claims 1 to 8, characterized in that the speed controller (12, 20, 35, 42) acts between the furniture body (17) and the drawer. Drawer system according to one of claims 1 to 9, characterized in that the speed controller (59) acts between the body rail (8) and the / the moving rail (s) (6, 7). Drawer system according to claim 10, characterized in that the speed controller (59) is arranged on the central rail (7) and acts between all rails (6-8). Drawer system according to one of claims 1 to 11, characterized in that the speed controller (12, 20, 35, 42, 59) at least one rack (15; 23; 45; 61,62) at least one pinion (13; 21,25, 26; 36,37; 43; 60) and at least one damper / brake (14; 22; 38,39; 44; 63), which are interconnected and work together. Drawer system according to one of Claims 1 to 12, characterized in that the drawer (1, 16, 30, 34, 41) is held in the open position by at least one holding system (10, 18, 32, 47-49) which the user decouples must before the drawer (1, 16, 30, 34, 41) is drawn in by the automatic feeder. Drawer system according to claim 13, characterized in that the holding system (10) acts between the rails (6-8). Drawer system according to claim 13, characterized in that the holding system (10) acts in a full extension drawer system with a body rail (8), middle rail (7) and drawer rail (6) between the drawer rail (6) and the middle rail (7), and / or between Body rail (8) and middle rail (7). Drawer system according to one of Claims 13 to 15, characterized in that the holding system (18, 32, 47-49) acts between a shaft of the energy store and / or the speed controller and the drawer (16, 30, 34, 41). Drawer system according to claim 16, characterized in that the holding system (18, 32, 47-49) is attached to the rear wall of the drawer (16, 30, 34, 41). Drawer system according to one of claims 13 to 17, characterized in that the holding system (10) is a releasable positive locking connection. Drawer system according to one of claims 13 to 17, characterized in that the holding system (18, 32, 47-49) is a releasable positive and / or frictional clamping connection with partially elastically resiliently deformable components. Drawer system according to one of Claims 13 to 19, characterized in that the speed controller (12), the energy store (11) and the holding system (10) for the extended drawer (1) are arranged separately from one another on the drawer system. Drawer system according to one of claims 13 to 20, characterized in that the speed controller (20, 35, 42), the energy store (19, 31) and the holding system (18, 32, 47-49) for the extended drawer (16, 30 , 34, 41) are arranged in a common area on the drawer system. Drawer system according to claim 21, characterized in that the common area on the back (3) of the drawer (16, 30, 34, 41). Drawer system according to claim 21 or 22, characterized in that the speed controller (20, 35, 42), the energy store (19, 31) and the holding system (18, 32, 47-49) are partially arranged on a common shaft (24) which is in meshing engagement with a toothed rack (23) of the furniture body (17) via a pinion (21), the longitudinal axis of which is parallel to the rails (6-8) or the extension / withdrawal path of the drawer (16, 30, 34, 41) runs.

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