EP3300628A1 - Retraction device for a drawer pullout - Google Patents

Abstract

An infeed device (10) for a drawer extension comprises a spring-loaded carriage (40) which can be moved in the in / out direction for temporary coupling to an inner rail (4) of the drawer extension. The carriage (40) can be blocked in a retracted position by a locking slide (21, 22) which is movable transversely to the insertion / withdrawal direction in a guide. The carriage (40) has for coupling to the inner rail (4) at least one pivot element (45, 46), which is pivotable about a perpendicular to the input / extension direction and perpendicular to the direction of movement of the locking slide (21, 22) oriented axis. The pivoting element (45, 46) and the guide are arranged such that the locking slide (21, 22) blocks a pivoting movement of the pivoting element (45, 46) in a blocking position. This results in a simple structure and thus low costs and high mechanical stability.

Description

The invention relates to a collection device for a drawer extension, with a spring-loaded, in the in / extension direction movable carriage for temporary coupling to an inner rail of the drawer extension, wherein the carriage is blockable by a transversely to the input / extension direction in a guide movable locking slide in a retracted position wherein the carriage for coupling to the inner rail has at least one pivoting element, which is pivotable about an axis oriented perpendicular to the input / extension direction and perpendicular to the direction of movement of the locking slide.

State of the art

There are drawer slides are known which comprise a fixed rail element for attachment to a furniture body and at least one mounted thereon movable rail element. The innermost movable rail element, the inner rail, is attached to a pull-out furniture part. Depending on the length of the drawer extension and the extension length further movable rail elements may be arranged between the fixed rail member and the inner rail, which cooperate telescopically. The rail elements are mounted for example via ball or roller guides together.

Drawer extensions are generally suitable for the storage of pull-out furniture parts, for the sake of simplicity, the term "drawer" is used below. However, the described collection devices are basically suitable for various extendable furniture parts. As a rule, an extract from a drawer is arranged on both sides.

Drawers for drawer slides automatically move the drawer to its final position when it is inserted. This improves the operability of the drawer, and the noise when closing can be minimized. Known catchment devices grasp the inner rail and guide it along a part of the closing movement, from a ready position of the collection device to the closed state.

From the DE 11 2008 001 880 T5 (Accuride International Inc.), for example, a retraction device is known which comprises a movable carriage, on which a bolt for cooperation with the inner rail is rotatably arranged.

For furniture with several drawers arranged one above the other, a simultaneous extension of several drawers is often to be prevented, namely to avoid a risk of tipping over by several heavy drawn drawers as well as a risk of injury from the pinching of body parts of the users. It is known in this context to provide locking slide, which are coupled to the drawer slides and prevent another drawer from being pulled out if a drawer has already been fully or partially pulled out.

The DE 10 2012 109 751 A1 (Paul Hettich GmbH & Co. KG) describes a drawer extension with a Selbsteinzugs- or ejection device which has a slidably mounted driver with which the intake or ejection device can be activated. For this purpose, an activator cooperates with the driver, which is arranged on a plugged onto the front end of the inner rail sealing plug. The driver also has a pin for engagement in a locking bar for locking and unlocking a plurality of superimposed drawers.

This extract has a complex construction with many parts. For given mechanical requirements of the extract resulting in high production costs. For a design without ejection functionality, the construction does not make sense.

Presentation of the invention

The object of the invention is to provide a the aforementioned technical field associated collection device, which is simple and mechanically robust.

The solution of the problem is defined by the features of claim 1. According to the invention, the pivoting element and the guide are arranged such that the locking slide blocks a pivoting movement of the pivoting element in a blocking position.

In addition to the existing elements, namely the locking slide and the pivoting element, no further components are necessary. This results in a simple structure. This results in low costs and high mechanical stability.

The collection device is in particular attached to the fixed rail element. The spring means coupled to the carriages may be a single, linear extending coil spring, a 180 ° deflected along a bend coil spring or act on a plurality of parallel coil springs. There are also other spring means, for. B. spiral or torsion springs, conceivable.

The interaction between the inner rail and the pivoting element takes place in particular via arranged in the region of the free end of the inner rail elements such as projections, pins or recesses, wherein the geometry of the pivoting element is adapted to the geometry of these elements. The elements on the inner rail can be integrally formed with this or attached to this fixed or detachable.

As mentioned, the pivoting element is pivotable about an axis oriented perpendicular to the insertion / withdrawal direction and perpendicular to the direction of movement of the locking slide, d. H. this pivot axis is also perpendicular to a main plane of the rails of the drawer extension.

The locking slide is mounted in a conventional manner, in particular on a locking bar. At the other end of the locking bar another locking slide is attached, which cooperates with the adjacent drawer. If a drawer is opened, the locking slide cooperating with its collection device are pushed out of the collection device and thus into the collection devices of the adjacent drawers, so that their extraction is prevented.

Preferably, the pivoting element on a cooperating with a pull-out movement with the inner rail holding portion. In this case, the pivoting element is mounted on the carriage such that the holding section is pivoted in a release position with respect to a holding position in the direction of a longitudinal center axis of the carriage. The holding section causes during the drawing-in process and along a partial section during the subsequent removal of the drawer a form-fitting coupling in the input / extension direction between the inner rail and the carriage. Thus, the spring force acting on the carriage can be transmitted to the inner rail for automatic retraction, and upon reopening, the opening force applied to the drawer is transmitted to the carriage so that the spring means can be re-tensioned. The leg ends where the pivot member the release position has reached. In this position, the carriage is locked in a conventional manner by means of the pivoting member to a stationary member. He can only move back in the feed direction when the pivot member is again contacted by the inner rail during insertion of the drawer.

Said mounting of the pivoting element on the carriage allows a simple interaction of the locking slide with the pivoting element, in that the locking slide can interact in particular with a region of the pivoting element which is located on the opposite side of the holding section with respect to the pivoting axis. The individual lever portions of the pivot member on both sides of the pivot axis can thus be made relatively short, which benefits the mechanical stability.

Alternatively, the pivoting element can be mounted on the carriage such that the holding section in the release position to the outside, d. H. away from the longitudinal center axis of the carriage, is pivoted. The interaction between the pivoting element and locking slide takes place in this case, either on the lever side of the holding portion or by a corresponding mechanism for deflecting a movement of the locking slide.

Advantageously, the pivot member on an eccentric (ie spaced from the) arranged curve pin, which cooperates to control the pivotal movement in a movement of the carriage in the input / extension direction with a stationary curve. Stationary "means in this context that the cam does not move with the carriage, in particular the interaction between the cam and the cam ensures that the pivot element reaches the release position in the correct position, or it can also serve for the aforementioned locking on the stationary element. Starting from the retraction position, the curve has, in particular, an axial section in which the pivot element moves in the extension direction without rotation with the carriage, a bevel section in which the rotation of the pivot element takes place into a release position and a locking section which is in particular perpendicular to the input. / Extension direction runs and forms a section on which the cam pin is supported for locking the carriage.

In principle, the control of the movement of the pivoting element can also be done in other ways, for. B. via a (stationary) rack and a pinion coupled to the pivoting element.

Preferably, the stationary curve in a section on an elastic boundary wall, so that by overcoming an insertion force, the inner rail can be coupled in a retracted position of the retraction device to the carriage by the holding portion of the pivot member is temporarily pivoted, the curve pin deforms the elastic boundary wall temporarily , This functionality is necessary if, for some reason, the feeder is in the retracted position but the drawer is initially open with the inner rail. This may be the case during assembly or after a faulty manipulation. By the mentioned process, it is possible by a simple insertion of the drawer to couple the inner rail again in the intended manner to the collection device.

Preferably, the collection device comprises a guide receptacle, in which the carriage is mounted linearly movable in the input / extension direction. The guide receptacle can be an integral part of the fixed rail element. Advantageously, however, it is an additional component which can be fastened to the fixed rail element, for example by a latching connection. In particular, the fixed rail member has a U-shaped cross-section, and the guide receptacle is received within the space defined between the two legs at the base of the fixed rail member.

Preferably, the stationary curve is formed on the guide receptacle. This results in a simple and mechanically stable construction.

Advantageously, the pivoting element has a cooperating with a retraction movement with the inner rail operating portion. This is contacted when inserting the drawer of the inner rail (or contact elements arranged thereon), so that the carriage from its axial locking is solved. At the same time, the holding section of the pivoting element comes into engagement with the inner rail (or contact elements arranged thereon), so that the inner rail (together with the drawer) is taken along with the carriage in the feed direction and to the retraction position due to the spring action. The actuating portion and the holding portion thus form a receptacle, between which the cooperating with the pivot member element of the inner rail is taken during the drawing-in movement and along the mentioned section when undressing.

Alternatively, no such operating portion is present. In this case, the release is effected for example by a direct contact between the inner rail and slide.

Preferably, the pivot member has a locking portion which cooperates in the locking position with the locking slide. This locking portion is dimensioned such that there is a safe and mechanically reliable interaction with the gate valve.

Advantageously, the locking portion comprises a nose which engages behind a free end of the locking slide in the blocking position. The nose avoids a pivoting movement of the pivoting element, even if the locking slide is slightly displaced outwards, z. B. due to material tolerances in the locking mechanism, as they may occur, for example, due to a thermal contraction of the locking slide connecting the locking rods. Thus, pivoting during a first movement section starting from the closed position is reliably prevented even if the locking slide is not fully inserted. This is particularly important when in the closed position, the pivoting element due to an elastic boundary wall of the curve (or other reasons) is pivotable to allow insertion of an initially uncoupled inner rail. If the pivoting movement is not prevented, it would otherwise be possible in this case to release the inner rail again by overcoming a certain force from the carriage with the catcher retracted, and thus still open the drawer. Advantageously, the carriage has a blocking surface which cooperates in the blocking position with the locking slide. By inserting the locking slide thus the carriage is prevented from moving in the opening direction.

Preferably, the locking portion and the locking surface in the retracted state of the carriage together form a tapered towards a longitudinal center axis of the carriage receiving the gate valve. The receptacle is in particular substantially triangular or trapezoidal. This makes it possible to implement the pull-out force acting on the slide (and the pivoting element) in an ejection force directed transversely to the pull-in / pull-out direction and acting on the lock slider.

Advantageously, the holding portion of the pivot member is arranged on a first, the inner rail facing side of the carriage, and the locking portion of the pivot member is disposed on a second, the first side opposite side of the carriage. In particular, the carriage comprises a base plate on which its further components are arranged and optionally stored. In the region of the pivoting element, the base plate comprises an opening through which sections of the pivoting element project through. Thus, in addition to the locking portion in particular, the curve pin on the second, the stationary curve facing side.

Alternatively, both the holding portion and the locking portion are located on the same side, in particular on the side facing the inner rail, the carriage.

Preferably, two pivot elements are arranged symmetrically to the longitudinal center axis of the carriage. As a result, a more uniform force transmission can be achieved, in addition, the transmitted forces are distributed to two spaced contact surfaces. On the carriage and thus the intake device acting torques due to eccentrically acting forces of the inner rail cancel due to the symmetrical arrangement substantially on.

Alternatively, only one pivoting element is present. It is also possible to provide more than two pivoting elements.

Advantageously, the collection device on a recorded in the carriage damper element. The damper element is designed in particular as a fluid damper. It preferably has a spring which brings the damper in an axially elongated position.

The damper element allows a relatively slow pull-in movement. A hard hitting the complete closing and the associated noise are prevented. The risk of injury from trapped hands or fingers is also minimized.

Preferably, a damper rod of the damper element cooperates with a stationary element of the collection device. This allows a simple construction. The stationary element may in particular be the guide receptacle for the carriage.

Advantageously, the stationary element is arranged in the feed direction of the carriage. The damper thus cooperates in an area with the stationary element, which lies opposite the interaction area with the inner rail. The respective interactions thus do not hinder each other.

1. a) einen Schlitten zur temporären Ankopplung an eine Innenschiene des Schubladenauszugs;
2. b) eine Führungsaufnahme, in welcher der Schlitten in Ein-/Auszugsrichtung linear beweglich gelagert ist.
3. c) Federmittel, die zwischen dem Schlitten und der Führungsaufnahme angeordnet sind und welche den Schlitten in Einzugsrichtung mit einer Federkraft beaufschlagen;
4. d) zwei am Schlitten symmetrisch zu seiner Längsmittelachse angeordnete Schwenkelemente, die um eine senkrecht zur Ein-/Auszugsrichtung und senkrecht zur Bewegungsrichtung des Sperrschiebers orientierte Achse schwenkbar sind;
5. e) zwei an der Führungsaufnahme ausgebildete Kurven zum Zusammenwirken mit je einem an einem Schwenkelement exzentrisch angeordneten Kurvenzapfen zur Steuerung der Schwenkbewegung des Schwenkelements.

In a preferred embodiment, the collection device comprises:

1. a) a carriage for temporary coupling to an inner rail of the drawer extension;
2. b) a guide receptacle in which the carriage is mounted linearly movable in the input / extension direction.
3. c) spring means, which are arranged between the carriage and the guide receptacle and which act on the carriage in the feed direction with a spring force;
4. d) two arranged on the carriage symmetrically to its longitudinal central axis pivot elements which are pivotable about an axis oriented perpendicular to the input / extension direction and perpendicular to the direction of movement of the locking slide axis;
5. e) two formed on the guide receptacle curves for interacting with a respective eccentrically arranged on a pivot member cam to control the pivotal movement of the pivot member.

The carriage is thereby blocked by a movable transversely to the retraction / extension direction locking slide in a retracted position by the locking slide in the locked position blocks a pivoting movement of the pivot member.

From the following detailed description and the totality of the claims, further advantageous embodiments and feature combinations of the invention result.

Brief description of the drawings

Fig. 1

Einen Schubladenauszug mit einer erfindungsgemässen Einzugsvorrichtung in einer teilweise ausgezogenen Stellung;

Fig. 2

den Schubladenauszug in der eingefahrenen Stellung;

Fig. 3

eine Rückansicht der erfindungsgemässen Einzugsvorrichtung in der eingefahrenen Stellung;

Fig. 4

einen ersten Querschnitt durch die erfindungsgemässe Einzugsvorrichtung in der eingefahrenen Stellung;

Fig. 5

einen zweiten Querschnitt durch die erfindungsgemässe Einzugsvorrichtung in der eingefahrenen Stellung;

Fig. 6

eine Rückansicht der erfindungsgemässen Einzugsvorrichtung in der Bereitschaftsposition; und

Fig. 7

einen Querschnitt durch die erfindungsgemässe Einzugsvorrichtung in der Bereitschaftsposition.

The drawings used to explain the embodiment show:

Fig. 1

A drawer extension with an inventive retraction device in a partially extended position;

Fig. 2

the drawer extension in the retracted position;

Fig. 3

a rear view of the inventive retraction device in the retracted position;

Fig. 4

a first cross section through the inventive retraction device in the retracted position;

Fig. 5

a second cross section through the inventive retraction device in the retracted position;

Fig. 6

a rear view of the inventive retraction device in the standby position; and

Fig. 7

a cross section through the inventive retraction device in the standby position.

Basically, the same parts are provided with the same reference numerals in the figures.

Ways to carry out the invention

The FIG. 1 shows a drawer extension with an inventive retraction device in a partially extended position. The FIG. 2 shows the drawer extension in the retracted position. The drawer extension 1 comprises an outer rail 2, a middle rail 3 and an inner rail 4, which are telescopically mounted on each other. For this purpose roller bearings 5, 6 are arranged between the outer rail 2 and the middle rail 3 and between the middle rail 3 and the inner rail 4, each in a manner known per se. The three rails can thus be moved linearly with little resistance to each other. All three rails are each formed by a substantially U-shaped profile made of sheet metal. The middle rail 3 is completely received between the legs of the outer rail 2, the inner rail 4 in turn between the legs of the middle rail. 3

At the free end of the outer rail 2, the inventive retraction device 10 is arranged. This is related to the others Figures 3-7 described in detail. With the retraction device 10, on the one hand, two locking slides 21, 22 cooperate, which are mounted so as to be linearly displaceable on the retraction device 10 perpendicular to the direction of insertion / withdrawal of the drawer extension 1 in the main plane of the drawer extension 1. On the other hand acts with the retraction device 10 at the retraction device 10 facing the end of the inner rail 4 arranged contact piece 7 together. This contact piece is made of plastic and arranged with a latching connection at the end of the inner rail 4. It has on its outer rail 2 side facing two retaining cams 7a, 7b (see also FIG. 5 ).

As described in detail below, the locking slide 21, 22 engage in the retracted position of the retraction device 10 with its free end in the retraction device 10 and cooperate with this. At the opposite end of the locking slide 21, 22 are fixedly connected to a locking bar, which is connected at the other end with a further locking slide, which cooperates with the retraction device of an adjacent drawer. The top or bottom drawer acts in each case only with a gate valve on the next lower or next upper drawer facing side together. The locking rods with the pushers are vertically oriented and freely movable along a linear guide. If the respective lower intake device is in the retracted position, the locking slide connected to the locking rod will move into the retraction device due to the influence of gravity, while the upper locking slide attached to the same locking rod will have moved out of the corresponding upper retraction device.

The Figures 3-5 show the inventive collection device in the retracted position. The FIG. 3 shows a rear view, the FIG. 4 a first cross-section parallel to the main plane of the drawer extension and the FIG. 5 a second cross-section parallel to this main plane. The first cross section according to FIG. 4 runs in the plane of the locking slide 21, 22. The second cross section according to FIG. 5 runs in the plane of the cooperating with the retaining cams 7a, 7b of the inner rail 4 pivot elements. The first cross section thus runs between that in the FIG. 3 shown back and the second cross section.

The retraction device 10 comprises a housing 30 which forms a guide receptacle and which is arranged between the legs of the U-shaped outer rail 2 (cf. FIGS. 4 . 5 ) is recorded. The housing 30 is made of a polymer and is held on the outer rail 2 due to its elasticity by a clip connection. The housing 30 has lateral openings 31, 32, which correspond in the attached state of the housing 30 with openings 2a, 2b in the two legs of the outer rail 2. The openings 31, 32 are formed in mouth parts of the housing 30, which further fix the retraction device 10 axially in the outer rail 2.

The housing 30 also has a substantially U-shaped cross-section. At the transition between the base and the two perpendicular projecting from this leg longitudinal grooves are formed. In these guide portions of a carriage 40 are mounted linearly movable. The carriage 40 can thus be moved in the input / extension direction relative to the housing 30.

The carriage 40 comprises a holder 41 running along its center line for a damper element 50 (cf. FIG. 5 ). This receptacle has a rectangular base area and an approximately square cross section, so that the main body 51 of the cylindrical damper element 50 can be accommodated. At its end facing the inner rail, the receptacle 41 has a support surface 42 on which the rear end of the main body 51 of the damper element 50 is supported. At the opposite end, the receptacle 41 has a passage opening 43, through which a damper rod 52 of the damper element 50 can pass.

When damper element 50 is a known fluid damper, the damper rod 52 is biased by a spring in the extended position. In the mounted position, the damper rod 52 contacts a stop 33 on the housing 30. This stop 33 is formed on the inside of an arcuate deflecting element 34. To this runs a slidingly mounted thereon coil spring 60 (see. FIG. 5 , indicated for clarity only by a dashed line), which is fixed with both ends to fastening pins 44a, 44b of the carriage 40. The carriage 40 is thus acted upon by the always biased coil spring 60 with a force in the feed direction.

On a base plate of the carriage 40 are pivotally mounted two pivoting elements 45, 46 about perpendicular to the main plane of the retraction device 10, arranged symmetrically to the central longitudinal axis of the retraction device 10 axes (see. Fig. 4 . 5 ). The axes are thereby in the input / extension direction in front of a central axis of the locking slide 21, 22, ie the inner rail 4 closer than the locking slide 21, 22. The pivot elements 45, 46 comprise a front part 45a, 46a, which is located in front of the pivot axis and the inner rail 4 faces, and a rear part 45b, 46b, which is located behind the pivot axis and the corresponding locking slide 21, 22 faces. The front part 45a, 46a is received in a breakthrough of the base plate of the carriage 40, while the rear part 45b, 46b is located only on the back of the base plate.

In the in the FIG. 4 The rear part 45b, 46b of the pivoting element 45, 46 has a receptacle 45c, 46c for the free end of the corresponding one Lock slide 21, 22 on. The geometry of the receptacle 45c, 46c is adapted to the geometry of the locking slide 21, 22; Thus, the receptacle 45c, 46c has a concave shape with a nose 45d, 46d, which can engage behind an inserted locking slide 21, 22. The carriage 40 has a ramp-like interaction surface 49a, 49b in the same plane in which the rear part 45b, 46b of the pivoting element 45, 46 can interact with the locking slide 21, 22. Both the receptacle 45c, 46c in the region of the nose 45d, 46d and the interaction surface 49a, 49b have an angle of 45 ° to the central longitudinal axis of the intake device 10.

On the back, the pivot elements 45, 46 in the region of the front part 45a, 46a on a guide pin 45e, 46e. This cooperates with a guide curve 35, 36, which is formed in the housing 30 of the feeder 10. The guide curve 35, 36 is - analogous to the pivot elements 45, 46 and the guide pins 45e, 46e - formed symmetrically to the central longitudinal axis of the feeder 10. It has a substantially axially (ie in the extension / extension direction) extending rear portion 35a, 36a, one at the front (ie in the direction of the inner rail 4) subsequent to the central longitudinal axis obliquely tapered portion 35b, 36b and in turn a front adjoining, transverse to the central longitudinal axis extending portion 35c, 36c. The inner, the central longitudinal axis of the retraction device 10 closer lateral boundary of the rear portion 35a, 36a is formed on the inside by a resilient tongue 35d, 36d.

The locking slide 21, 22 have a substantially rectangular cross-section. In the region of the free end, the width of the locking slides 21, 22 decreases in the plane interacting with the pivoting elements 45, 46, so that a symmetrical trapezoidal shape results in this area. In a plane behind the pivot elements 45, 46, the gate valves further extend inwards, at their free end they have a step-like shape, so that along the gate valves and locking rods acting forces can be transferred from one side of the collection device 10 to the other ( see. FIG. 3 ).

In a plane in front of the main body of the carriage 40, the pivot elements 45, 46 a receptacle 45 f, 46 f (see. FIG. 5 ). This is outward, ie in one direction from the central longitudinal axis of the retraction device 10 away, and is bounded by a holding portion 45g, 46g on the inner rail 4 side facing and an actuating portion 45h, 46h on the inner rail 4 side facing away.

The FIG. 6 shows a rear view of the inventive retraction device. It corresponds to the view according to FIG. 3 However, the device is now in the ready position. The FIG. 7 shows a cross section through the inventive feed device in the standby position. The representation otherwise corresponds to the FIG. 5 , The function of the collection device 10 will be described below with reference to FIG Figures 3-7 explained.

In the retracted position according to the Figures 3-5 are the two pivot elements 45, 46 due to the interaction between guide pin 45e, 46e and guide curve 35, 36 with its front part 45a, 46a pivoted outwardly and the retaining cams 7a, 7b of the inner rail 4 are behind the holding portion 45g, 46g in the receptacle 45f , 46f added. If the corresponding drawer is now pulled out, the pull-out movement is transferred directly to the inner rail 4. The retaining cams 7a, 7b arranged fixedly take the pivot elements 45, 46 and thus the slide 40 along the guide formed by the housing 30 via the holding sections 45g, 46g With. The guide pins 45e, 46e are guided in the guide curves 35, 36. When you take off the coil spring 60 (further) is also stretched. Due to the spring integrated in the damper element 50, the damper rod 52 of the damper element 50 is extended until its free end strikes the stop 33 again. In a rapid removal of the drawer, the damper rod 52 may lose contact with the stop 33 in the meantime. This is irrelevant in the context of the pull-out movement. Due to the appropriate arrangement but it is avoided that any occurring high forces are transmitted to the damper element and could damage it.

As soon as the guide pins 45e, 46e have left the rear section 35a, 36a and are guided in the middle section 35b, 36g, a pivotal movement of the pivot elements 45, 46 results due to their tapering geometry: the retaining sections 45g, 46g gradually become inward the central longitudinal axis of Feeding device 10 to, pivoted. Release of the retaining cams 7a, 7b of the inner rail 4, however, takes place only when the guide pins 45e, 46e transgress into the sections 35c, 36c extending transversely to the central longitudinal axis. With the release of the retaining cams 7a, 7b, the inner rail is separated from the intake device 10. The guide pins 45e, 46e are held in the thus-reached standby position on the rear surface of the transverse portions 35c, 36c. The coil spring 60 thus remains tensioned and the carriage 40 in the reached position. The damper rod 52 of the damper element 50 is in the elongated position, its free end contacts the stop 33 on the housing 30 of the feeder 10th

The ready position, as in the FIGS. 6 and 7 is held, is now maintained until the drawer is closed again and in this context, the retaining cams 7a, 7b again come into contact with the pivot elements 45, 46 of the carriage 40. The holding cams 7a, 7b first contact the actuating sections 45h, 46h of the pivoting elements 45, 46. When the carriage 40 is initially held in the axial direction, the pivoting elements 45, 46 are then pivoted outwards so that the guide pins 45e, 46e engage in the middle section 35b , 36b of the guide cam 35, 36 enter and the holding portions 45g, 46g of the pivoting element again engage behind the retaining cams 7a, 7b axially. The middle and the rear portion 35b, 35a, 36b, 36a of the guide curve can be caused by the coil spring 60 retraction movement of the carriage 40, in which the inner rail and thus the entire drawer extension is taken. This movement is damped by the damper element 50, which is arranged between the carriage 40 and the housing 30. The movement ends when the carriage 40 with its rear end in the region of Hubendflächen 61 a, 61 b impinges on the housing (see Fig. 4 ). The pivot members 45, 46 are moved back to their pivotal position in the retracted position due to the cooperation between the guide cams 35, 36 and the guide pins 45e, 46e.

If the retraction device 10 is in the retracted position during the assembly process or after a faulty manipulation, but the inner rail is not coupled to the retraction device 10, the initial state according to Figures 3-5 in a simple way. The inner rail is moved to (by inserting the drawer) on the retraction device 10 to. In this case, the retaining cams 7a, 7b come into contact with a front side of the holding portions 45g, 46g. Their shape is such that they are thereby pressed inward, thereby causing a corresponding pivotal movement of the pivot members 45, 46 until the retaining cams 7a, 7b have passed the retaining portions 45g, 46g. The latter then snap back, so that the retaining cams 7a, 7b are received in the receptacles 45f, 46f in the desired manner. The corresponding pivotal movement of the pivot elements 45, 46 is made possible in this process by the resilient tongues 35d, 36d, which limit the rear portions 35a, 36a of the guide curves 35, 36 inwardly. The resilient tongues 35d, 36d also ensure that the retaining portions 45g, 46g snap back after passing the retaining cams 7a, 7b.

In the retracted position according to the Figures 3-5 let the locking slide 21, 22 retract into the feeder 10. Its front end is then first received in the receptacle 45c, 46c of the corresponding pivoting element 45, 46. Each of the locking slide 21, 22 can now be basically freely linearly movable. This is the case when none of the drawers of a plurality of superimposed drawers is open. In this case, the drawer 10 associated drawer can be opened easily. Locking slide, which are initially retracted into the retraction device, in particular locking slide 21, which are arranged above the retraction device 10 and are in the retracted position due to gravity, thereby gradually by the corresponding interaction surface 49 a, 49 b of the carriage 40 from the retraction device 10 addition emotional.

The coupling in the direction of action of the locking slide 21, 22 and locking rods by the step-like shape leads to the fact that only one of several superimposed drawers can always be opened. The collection devices of the other drawers are locked on the locking slide and locking rods, so that the corresponding further drawer extensions can not be pulled out.

If now one of the locking slide 21, 22 is due to another already opened drawer in a blocking position, it can not be in the linear Moving direction of the locking slide 21, 22 move. Due to the interaction between the locking slide 21, 22 and the corresponding pivoting element 45, 46 as a pull-out movement of the retraction device 10 and thus a release of the retaining cams 7a, 7b is prevented. Due to the shape of the pivoting element 45, 46 with the nose 45d, 46d, this is also ensured if the blocking gate valve 21, 22 is not completely sufficient due to manufacturing tolerances or thermal effects until the end of the recording. The tapered region of the locking slide 21, 22 is also in this case - possibly after a minimal axial movement of the carriage 40, a large area with the nose 45d, 46d limiting surface interact and a pivoting movement (which would otherwise be possible due to the resilient tongue of the guide curve otherwise ) prevent.

The invention is not limited to the illustrated embodiment. In particular, the geometry of the individual elements of the collection device can also be designed differently.

In summary, it should be noted that the invention provides a collection device which is simple in construction and mechanically robust.

Claims (16)

Retracting device for a drawer extension, with a spring-loaded, movable in the in / out direction slide for temporary coupling to an inner rail of the drawer extension, the carriage is blockable by a transversely to the input / extension direction in a guide movable locking slide in a retracted position, wherein the carriage for coupling to the inner rail has at least one pivoting element which is pivotable about a perpendicular to the input / extension direction and perpendicular to the direction of movement of the locking slide axis, characterized in that the pivoting element and the guide are arranged such that the locking slide in a blocking position a Pivoting movement of the swivel element blocked. Feeding device according to claim 1, characterized in that the pivoting element has a cooperating with a pull-out movement with the inner rail holding portion, wherein the pivoting element is mounted on the carriage, that the holding portion is pivoted in a release position with respect to a holding position in the direction of a longitudinal center axis of the carriage. Feeding device according to claim 1 or 2, characterized in that the pivoting element has an eccentrically arranged cam journal, which cooperates for controlling the pivoting movement during a movement of the carriage in the input / extension direction with a stationary curve. Feeding device according to claim 3, characterized in that the stationary curve in a section has an elastic boundary wall, so that by overcoming an insertion force, the inner rail is coupled in a retracted position of the retraction device to the carriage by the holding portion of the pivot member is temporarily pivoted, wherein the curve pin temporarily deforms the elastic boundary wall. Feeding device according to one of claims 1 to 4, characterized by a guide receptacle in which the carriage is mounted linearly movable in the input / extension direction. Feeding device according to claim 3 or 4 and according to claim 5, characterized in that the stationary curve is formed on the guide receptacle. Feeding device according to one of claims 1 to 6, characterized in that the pivoting element has a cooperating with a retraction movement with the inner rail operating portion. Feeding device according to one of claims 1 to 7, characterized in that the pivoting element has a locking portion which cooperates in the blocking position with the locking slide. Feeding device according to claim 8, characterized in that the locking portion comprises a nose which engages behind a free end of the locking slide in the blocking position. Feeding device according to one of claims 1 to 9, characterized in that the carriage has a blocking surface which cooperates in the blocking position with the locking slide. Feeding device according to claim 8 or 9 and according to claim 10, characterized in that the locking portion and the locking surface in the retracted state of the carriage together form a tapering in the direction of a longitudinal center axis of the carriage receiving the gate valve. Feeding device according to claims 2 and 8, characterized in that the holding portion of the pivoting element is arranged on a first, the inner rail facing side of the carriage and that the locking portion of the pivoting member is disposed on a second, the first side opposite side of the carriage. Feeding device according to one of claims 1 to 12, characterized in that two pivoting elements are arranged symmetrically to the longitudinal center axis of the carriage. Feeder device according to one of claims 1 to 13, characterized by an image picked up in the slide damper element. Feeding device according to claim 14, characterized in that a damper rod of the damper element cooperates with a stationary element of the collection device. Feeding device according to claim 15, characterized in that the stationary element is arranged in the feed direction of the carriage.

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