EP2587961B1 - Pull-out guide for a pull-out furniture part - Google Patents

Description

The present invention relates to a drawer slide for a furniture drawer part, preferably a drawer, wherein the drawer guide has a fixable on a furniture body guide rail and a couplable with the furniture drawer rail and optionally an aussverlängernde center rail and is equipped with a Selbsteinzugsvorrichtung, which has a housing with a therein Borders slidable and coupled with a spring-like power storage carrier and the driver has tensioned in a displacement of the running rail relative to the guide rail from a given fully retracted extract part basic position out the energy storage and is in driver connection with an activator, which repealed upon further displacement of the track and the driver is blocked against displacement and this blockade can only be canceled by a renewed coupling of the activator with the driver, after which then the Auszu Gsteil is moved back by the energy storage in the feed direction.

Pull-out guides of the generic type are known in many embodiments, for example from the US 2004/0104650 , In the Selbsteinzugsvorrichtungen known pullout guides preferably tension springs or corresponding gas springs are used as power storage, which are connected to the rear end of the driver and which are stretched at a beginning opening process for a furniture pullout until the blockage of the driver. The driver must be out projecting beyond the tension spring in a corresponding cam and can be brought at the end of the control cam in a blocking position.

This results in an overall large length of such self-closing devices.

The present invention has for its object to provide a pullout guide of the generic type whose total length is not or only slightly larger than the total length of the respectively used force accumulator.

This object is achieved in that the energy storage of at least one compression spring or one in the front, the running rail facing end portion of the driver to this connected tension spring, and that the driver has a coupling part for coupling with the activator, wherein the driver is provided with at least one movable transversely to its axis of displacement movable support arm with at least one locking cam, the tensioned memory in at least one locking recess engages the housing and is fixed in this position by the coupling part

Such a construction offers the advantage that the total length or self-retracting device practically does not go beyond the total length of the force accumulator used, so that an extremely compact and inexpensive unit is realized.

Another advantage of the relatively short Selbsteinzugsvorrichtung is to see in pullout guides with a center rail that the total length of the center rail is affected only slightly by the Selbsteinzugsvorrichtung, so that in a pull-out guide according to the possibility of using a relatively long center rail, the load-bearing strength at full extension significantly is improved.

Preferably, a switching element is provided, by means of which the coupling part for the coupling with the activator can be actuated. The switching element may cause a rotation of the coupling part to align an opening of a retraction channel on the coupling part to the activator. It may happen that a malfunction occurs and the self-closing mechanism is moved to the retracted position without coupling with the activator. Then, the switching element can ensure that the coupling part can be rotated and tightened again, in order then to be coupled to the activator on the pull-out guide during the next closing operation. The switching element can be defined adjacent to the activator on the running rail. Further, channels for receiving the activator and the switching element may be formed on the coupling part to provide the corresponding function for coupling even in case of malfunction can.

Further features of the invention are the subject of dependent claims.

Embodiments of the invention are illustrated in the accompanying drawings and will be described in more detail below.

Figur 1

eine perspektivische Gesamtansicht einer erfindungsgemäßen Auszugsführung mit einer im vorgespannten Zustand dargestellten Selbsteinzugsvorrichtung

Figur 2

eine der Figur 1 entsprechende Perspektivdarstellung der Auszugsführung im vollkommen eingeschobenen Zustand, in der die Selbsteinzugsvorrichtung entspannt ist

Figur 3

eine perspektivische Explosionsdarstellung der Selbsteinzugsvorrichtung gemäß den Figuren 1 und 2

Figur 4

eine Draufsicht auf die Selbsteinzugsvorrichtung in einem Zustand gemäß Figur 1

Figur 5

eine perspektivische, bereichsweise durchbrochen gezeigte Darstellung der Selbsteinzugsvorrichtung kurz vor dem Einlaufen eines Aktivators in einen Mitnehmerbereich der Selbsteinzugsvorrichtung

Figur 6

eine teilweise durchbrochen dargestellte Draufsicht auf die Selbsteinzugsvorrichtung im entspannten Zustand

Figur 7

eine der Figur 5 entsprechende Perspektivdarstellung der Selbsteinzugsvorrichtung in einer Position gemäß Figur 6

Figur 8

eine Teilansicht einer einen Aktivator der Selbsteinzugsvorrichtung tragenden Laufschiene der Auszugsführung

Figur 9

eine der Figur 3 entsprechende perspektivische Explosionsdarstellung einer Selbsteinzugsvorrichtung nach einem weiteren Ausführungsbeispiel der Erfindung

Figur 10

eine teilweise durchbrochen dargestellte Draufsicht auf den Bereich der Selbsteinzugsvorrichtung gemäß Figur 9 im entspannten Zustand

Figur 11

eine der Figur 10 entsprechende Perspektivdarstellung des Bereiches der Selbsteinzugsvorrichtung gemäß den Figuren 9 und 10

Figur 12

eine Einzelteildarstellung eines Mitnehmers einer Selbsteinzugsvorrichtung nach den Figuren 9 - 11

Figur 13

eine teilweise durchbrochen dargestellte Draufsicht auf den Bereich einer Selbsteinzugsvorrichtung nach einem weiteren Ausführungsbeispiel der Erfindung im gespannten Zustand

Figur 14

eine der Figur 13 entsprechende Perspektivdarstellung

Figur 15

eine weitestgehend der Figur 13 entsprechende Draufsicht, unmittelbar vor dem Einlaufen eines Aktivators in den Bereich des Mitnehmers

Figur 16

eine Draufsicht auf einen Mitnehmer der Selbsteinzugsvorrichtung gemäß dem Ausführungsbeispiel nach den Figuren 13 - 15

Figuren 17A und 17B

zwei Ansichten eines an der Laufschiene festlegbaren Bauteils mit dem Aktivator und einem Schaltelement;

Figuren 18A bis 18E

mehrere Ansichten einer modifizierten Ausführungsform eines Kopplungsteils;

Figur 19

eine Ansicht einer Auszugsführung mit dem modifzierten Kopplungsteil der Figur 18;

Figuren 20 bis 23

mehrere Ansichten des Kopplungsteils der Figur 18 im Zusammenspiel mit dem Schaltelement,

Figuren 24 bis 26

mehrere Ansichten eines modifizierten Ausführungsbeispiels in unterschiedlichen Positionen beim Einkoppeln des Aktivators in das Kopplungsteil;

Figur 27

eine perspektivische Ansicht des Bauteils mit dem Aktivator, und

Figur 28

eine perspektivische Ansicht des Kopplungsteils der Figur 24.

Show it:

FIG. 1

an overall perspective view of a pull-out guide according to the invention with a Selbsteinzugsvorrichtung shown in the prestressed state

FIG. 2

one of the FIG. 1 corresponding perspective view of the pullout guide in the fully inserted state in which the self-closing device is relaxed

FIG. 3

an exploded perspective view of the Selbsteinzugsvorrichtung according to the FIGS. 1 and 2

FIG. 4

a plan view of the Selbsteinzugsvorrichtung in a state according to FIG. 1

FIG. 5

a perspective, partially broken through illustration of the self-closing device just before the entry of an activator in a driver region of the self-closing device

FIG. 6

a partially open plan view of the self-closing device in the relaxed state

FIG. 7

one of the FIG. 5 corresponding perspective view of the Selbsteinzugsvorrichtung in a position according to FIG. 6

FIG. 8

a partial view of an activator of Selbsteinzugsvorrichtung bearing running rail of the pullout guide

FIG. 9

one of the FIG. 3 corresponding perspective exploded view of a Selbsteinzugsvorrichtung according to another embodiment of the invention

FIG. 10

a partially open plan view of the area of the self-closing device according to Figure 9 in the relaxed state

FIG. 11

one of the FIG. 10 corresponding perspective view of the area of the self-closing device according to the Figures 9 and 10

FIG. 12

an itemized view of a driver of a self-closing device according to the FIGS. 9-11

FIG. 13

a partially open plan view of the area of a self-closing device according to another embodiment of the invention in the tensioned state

FIG. 14

one of the FIG. 13 corresponding perspective view

FIG. 15

a largely the FIG. 13 corresponding plan view, immediately before the entry of an activator in the region of the driver

FIG. 16

a plan view of a driver of Selbsteinzugsvorrichtung according to the embodiment of the FIGS. 13-15

Figures 17A and 17B

two views of a fixable on the running rail component with the activator and a switching element;

FIGS. 18A to 18E

several views of a modified embodiment of a coupling part;

FIG. 19

a view of a pullout guide with the modified coupling part of FIG. 18 ;

FIGS. 20 to 23

several views of the coupling part of FIG. 18 in interaction with the switching element,

FIGS. 24 to 26

a plurality of views of a modified embodiment in different positions when coupling the activator in the coupling part;

FIG. 27

a perspective view of the component with the activator, and

FIG. 28

a perspective view of the coupling part of FIG. 24 ,

In the FIGS. 1 and 2 is a generally designated by the reference numeral 1 pullout guide for a furniture pullout, preferably a drawer referred. This pullout guide 1 essentially comprises a guide rail 2 which can be fixed to a furniture carcass and a running rail 3 which can be coupled to a furniture pullout part, wherein between the guide rail 2 and the running rail 3 it is also readily possible to provide an extendable center rail.

The pullout guide 1 is in a known manner with a self-closing device, which is generally designated by the reference numeral 4, equipped.

Essential components of this self-retracting device 4 result particularly clearly from the perspective exploded view according to FIG. 3.

The individual components of the self-retraction device 4 are essentially a housing 5 which can be fixed in the guide rail 2, a driver 6 which is displaceable within the housing 5, and two compression springs 7, each between two end stops 8 and 9 are supported on the housing 5 on the one hand and on the driver 6 on the other hand and by displacement of the driver 6 can be compressed and thus brought into a prestressed state.

Other components of the self-closing device 4 are on the one hand a coupling part 10, which is rotatably mounted on the driver 6 and a particular from FIG. 8 very well recognizable activator 11, which is attached to the running rail 3.

The coupling part 10 is arranged between two movable retaining arms 12 of the driver 6, wherein the retaining arms 12 are provided with locking cams 13, which locking recesses 14 are assigned in the housing 5. In particular FIG. 3 makes it clear, the support arms 12 are in a relaxed state facing each other in the direction of the longitudinal axis of displacement of the pullout guide 1, namely so far that the locking cam 13 are in this relaxed state outside the range of the locking recesses 14 of the housing 5.

By lying between the support arms 12 coupling part 10, which is preferably designed as a rotary valve, the retaining arms 12 can be spread contrary to its rotational position depending on the rotational position of the coupling member 10 until the corresponding displacement position of the driver 6, the locking cam 13 in the locking recesses 14 of the housing fifth intervention. This is achieved when the compression springs 7 are fully biased by moving the driver 6. The just described position of the driver 6, the coupling member 10 and the retaining arms 12 and the locking cam 13 is particularly clear from the top view FIG. 4 , Also in the perspective view FIG. 5 the aforementioned position is shown.

Trained as a rotary slide coupling part 10 is equipped with a control cam 10a, which in a position of the driver 6 according to FIG. 4 with its open side opposite the activator 11 connected to the running rail 3, so that when the running rail 3 is displaced in the direction of insertion, the activator 11 can move into the control cam 10a of the rotary valve 10a. The cam 10a is how FIG. 4 clearly shows, provided with a direction of insertion in the direction of the activator 11 button 10b, through which the rotary valve 10 at incoming activator 11 - in relation to the viewing direction according to FIG. 4 - Is pivoted counterclockwise about its axis of rotation. In such a pivoted position, the opposing retaining arms 12 of the driver 6 are no longer burdened by the rotary valve 10 and can thus due to their spring properties back to their relaxed position according to FIG. 3 spring back. In this case, the locking cam 13 is disengaged from the locking recesses 14 of the housing 5, so that now the running rail 3 and thus a coupled furniture extractor be moved back in the closing direction by the force of the prestressed compression springs.

By the rotation of the coupling member 10 in the sense described above, the run in the control cam 10a activator 11 is engaged behind by a retaining edge 10c of the control cam 10a. The corresponding positions also result from the FIGS. 6 and 7 ,

Will now be pulled out of a furniture carcass from the relaxed position of the compression springs 7 or accordingly taken closed position of the rails 3 a so coupled furniture extractor is formed via the activator 11 and formed as a rotary slide coupling part 10 of the driver 6 with simultaneous tension of the compression springs 7 in the extension direction taken. If the locking cams 13 of the retaining arms 12 are again opposite the latching recesses 14 of the housing 5, the maximum displacement of the driver 6 has been reached. Further displacements of the running rail 3 in the opening direction now causes a pivoting of the coupling member 10 designed as a rotary slide in a position according to FIG. 4 in which the activator 11 can be pulled out of the control cam 10a. At the same time, the locking cams 13 engage in the locking recesses 14 and thus block the driver 6 in the prestressed situation of the compression springs 7. At the same time unimpeded undressing of the furniture extracting part according to the displacement length of the pullout guide 1 is possible.

In a renewed closing operation for the furniture pullout part, the sequence already described above then results in that now formed as a rotary valve coupling member 10 is brought back into its release position by the activator and the driver 6 is moved by the biased force of the compression springs 7 in the closing direction.

It is clear that the total length of the self-closing device 4 is practically limited only by the total length of the required compression springs 7. A substantial projection of any components of the Selbsteinzugsvorrichtung 4 on the housing 5 also does not arise.

Thus, a arranged between the guide rail 2 and the running rail 3 center rail can be made correspondingly long.

As can be seen in particular from the exploded view according to FIG. 3 results, the Selbsteinzugsvorrichtung 4 may also be provided with a damper 15. Preference is given to a damper 15 in the form of a rotary damper, the form-fitting manner in a corresponding recess 16 of the driver. 6 can be clipped and is equipped with a drive pinion 17 which meshes in the assembled state with a preferably integrally formed on the housing 5 rack 18. It will be clear that such a damper 15 can also be subsequently attached to the self-closing device 4 without difficulty.

Thus, it is readily possible to provide the Selbsteinzugsvorrichtungen 4 with or without damping devices depending on the customer.

In the FIGS. 9-12 an embodiment of the invention is shown, which ultimately only by the design of the coupling part 10 of the embodiment of the Figures 1 - 8 different. As here in particular the FIG. 12 makes it clear, the coupling member 10 is connected via elastic hinges 19 with the retaining cams 13 supporting retaining arms 12. At these hinges 19 close to each other at an angle to each other extending hinge arms 20, which are integrally connected to each other via a molded joint 21. The hinge arms 20 form on the inside a part of a boundary of a catch chamber 10d for the activator 11, which is completed by additional and connected to the hinge arms 20 legs 22, what FIG. 12 clearly shows. In the in FIG. 12 shown position, the catch chamber 10 is practically closed and the activator 11 is in this situation within the catching chamber 10. This also show the representations of the Figures 10 and 11 , If now the running rail 3 is moved in the opening direction in this relaxed position of the compression springs 7, the hinge arms 20 of the coupling member 10 are pivoted to each other in an increasingly flatter angular position, whereby the retaining arms 12 are spread outwardly with the locking cams 13 attached thereto. As soon as the latching cams 13 engage in the latching recesses 14 of the housing 5, the hinge arms 20 are arranged counterclockwise against one another over a dead center, thus ensuring the position of the support arms 12. At the same time, the additional sections 22 which originally have the catching chamber 10d limited, away from each other and release an opening through which the activator 11 can be moved out of the catching chamber 10d.

In the FIGS. 13 to 16 a further embodiment of the invention is shown, which is comparable to the embodiment of the FIGS. 9 to 12 and from this by a simplified embodiment of the Coupling parts 10 different. Also in the embodiment of the FIGS. 13 to 16 is the coupling member 10 integrally formed integrally over two hinge arms integrally formed on the support arms 12 with the locking cam 13. The coupling part 10 itself is in the form of a half-shell, the open side of which faces the activator 11.

In particular FIG. 13 clearly shows, run the hinge arms 20 at prestressed compression springs 7 at an angle to each other, wherein the hinge arms 20 are inclined in this position starting from the holding arms 12, respectively in the direction of the activator 11. In the transition region between the two hinge arms 20, a joint 21 is again provided at the lowest point of the half-shell-like coupling part 10, which - as in the embodiment of FIGS FIGS. 9 to 12 - Is formed by material weakening in the manner of a film hinge.

Now runs in the FIG. 13 apparent position of the entire system of the activator 11 in the coupling part 10 and is moved further in the insertion direction, is caused by the force of the incoming activator 11 that the two hinge arms 20 are pressed against its instantaneous position towards the rear end of the guide rail 2. The two hinge arms 20 then run opposite to the FIG. 13 apparent skew and at the same time the half-shell-like coupling member 10 is deformed such that the activator 11 is fully or partially engaged behind. In addition, the locking cams 13 are moved out of the locking recesses 14 of the housing, so that the driver 6 can be moved by the force of the prestressed compression springs 7 in the closing direction.

Since the activator 11 is engaged behind in the deformed half-shell-like contour of the coupling part 10, the driver 6 can be moved to a position during extension of the running rail 3 via the activator 11 of the driver 6 with simultaneous renewed tension of the compression springs 7, in which the locking cam 13 back into the Locking recesses 14 engage. A further displacement of the driver 6 is thereby prevented, so that a further extension of the running rail 3 causes the structure of hinge arms 20 and coupling member 10 back into the FIG. 13 transferred apparent position while the opening side of the coupling member 10 is completely released again, so that the activator 11 moved out of the coupling member 10 and can be freely moved together with the running rail 3.

In the FIGS. 17A and 17B a substantially plate-shaped component 30 is shown on which integrally a pin-shaped activator 11 is integrally formed. The plate-shaped member 30 is clipped into a recess of the track, but can also be attached to the track in other ways. Integral with the component 30, a switching element 31 is formed, which is formed as a projection and protrudes on the same side, as the activator 11. The switching element 31 has an elongated contour in plan view.

The activator 11 and the switching element 31 cooperate with a coupling part 40, as shown in the FIGS. 18A to 18E is shown. The coupling part 40 comprises bendable locking webs 41, which can be inserted into an opening on the driver 6, so that the coupling part 40 is rotatably mounted about an axis 42 on the driver 6.

On the opposite side to the latching webs 41 groove-shaped channels 43, 44 and 46 are recessed, wherein between the channels 43 and 44, a projection 45 is formed. In the groove-shaped channels 43, 44 and 46, the control element 31 and / or the peg-shaped activator 11 retract to rotate the coupling member 40, as already partially explained in the first embodiment.

In FIG. 19 a pull-out guide is shown, in which on the running rail 3, the component 30 with the activator 11 and the switching element 31 is fixed. For better clarity, the plate-shaped member 30 is not shown, but only the switching element 31, which just enters a channel 44 of the coupling part 40.

The function of the switching element 31 and the coupling part 40 will be described below with reference to FIGS FIGS. 20 to 23 explained. In normal operation, the activator 11 is coupled during retraction with the coupling member 40, which is rotated via the activator 11 and then moved together with the driver 6, as described in the first embodiment. In the opposite direction, the spring 7 is stretched over the driver 6 until the coupling member 40 has reached an end position and is then locked there by turning to release the activator 11. It can now happen that in the case of a faulty locking an independent unlocking takes place without the activator 11, the coupling member 40 is actuated, so that the driver 6 is moved back to the relaxed starting position, without taking the track.

In such a malfunction, the switching element 31 is used. The switching element 31 may pass when retracting the running rail 3 in the closing direction of the projection 45 in the channel 44, optionally under bending of the control element 31, and behind the projection 45 come to rest on this. The coupling member 40 is still in a locking position, so that the switching element 31 strikes against the projection 45 during renewed extension of the running rail 3 and thus entrains the coupling part to the unlocking position, which will be described below. The control element 31 can also be deformed due to the thinner wall thickness, so that it latches behind the projection 45.

If now the running rail 3 of the pullout guide moves back in the opening direction, the switching element 31 pulls the driver 6 in the cocked position until the driver 6 can not be moved further and then the switching element 31, the coupling member 40 rotates and locks, as in FIG. 21 is shown. Upon further extension of the running rail 3, the switching element 31 via the channel 43 (possibly even with slight bending) leave the coupling member 40, but without further rotation of the switching element 31. The switching element 31 can now be moved together with the activator 11 again in the opening direction.

During the next closing operation, the switching element 31 is retracted through the channel 43 into the coupling part 40. Thereafter, the activator 11 enters the channel 43 and then reaches a contact surface, wherein the coupling member 40 then, as in FIG. 22 shown rotated counterclockwise and thereby rotated from a locking position to an unlocking position. Thereby, the activator 11 is disposed adjacent to the projection 45 and can be moved in coupling with the coupling member 40 in the closed position. As in FIG. 23 is shown, the switching element 31 is located in the channel 46 and does not hinder the rotational movement of the coupling part 40 about the axis 42. During the next opening operation, the activator 11 can then move the coupling part 40 back into an end position and then turn so that the activator 40 is decoupled and the catch 6 is locked in the end position by rotating the coupling part 40. The switching element 31 can be pulled out of the coupling part 40 via the channel 43 after the coupling part 40 has been rotated.

It is also possible to provide other switching elements in order to couple the coupling part 40 again with the activator 11 in the event of a faulty operation. The present mechanism has the advantage that the user only has to close and open the pullout guide in order then to be able to re-couple the activator 11 with the coupling part 40.

In FIG. 24 a further embodiment of a coupling mechanism of an activator 11 is shown with a coupling part 40 ', which can be used in a pullout guide according to the previous embodiments. An activator 11 comprises a pin-shaped portion and an integrally laterally projecting cantilever 11a, which are integrally formed with a plate-shaped member 30 ', which is fixed to a running rail 3 of the pullout guide, preferably by latching or clamping means. On the component 30 ', a switching element 31 is further integrally formed, which is formed as a projection and also protrudes on the side of the activator 11.

In the Figures 24 and 25 the plate-shaped component is shown broken window-like in the central region, so that illustratively the activator 11 and the switching element 31 can be shown, while the plate-shaped member 30 'outside the break window without the running rail 3 is shown. The activator 11 and the switching element 31 are in FIG. 24 still spaced from a coupling member 40 'which is in the latched position.

When moving the running rail in the closing direction, the switching element 31 now firstly enters a run-in channel 43 'of the coupling part 40', as shown in FIG FIG. 25 is shown. When retracting the activator 11 in the coupling part 40 'now hits the boom 11 a of the activator 11 with its end portion against a projection 47' of the coupling part 40 ', so that the coupling part 40' about an axis 42 'can be rotated. The axis 42 'may, as in the previous embodiment, be formed by a latching web, wherein the axis 42' is shown only schematically. By the arm 11 a, the effective lever length R is increased because the arm 11 a strikes with its end portion at a location on the projection 47 ', which is comparatively far away from the axis 42', for example, more than 30% of the maximum length of the coupling element 40 ', in particular greater than 0.5 cm. As a result, the unlocking of the coupling part 40 'by a corresponding rotational movement can be done easily and with little effort. This leads to a better feel and also the noise when operating the coupling member 40 'are relatively quiet. By turning the coupling part 40 ', the holding arms 12 are released ( FIG. 6 ), so that the locking cam 13 can be moved out of the locking recesses 14 and thereby the driver 6 can be moved in the closing direction 7 due to the force of the compression springs.

In FIG. 26 For example, the coupling member 40 'is shown in the rotated unlocked position. By the action of the driver 6 by the compression springs 7 now pushes a projection 45 'of the coupling part 40' against the pin-shaped portion of the activator 11, while the arm 11a spaced from the projections 45 'and 47' is arranged.

For an opening operation now arranged on the running rail 3 drawer can be pulled from the closed position in the opening direction, whereby the activator 11 is moved in the opening direction and pulls through the system to the projection 45 'and the coupling member 40' with the driver 6 in the opening direction, until an end position is reached and the driver 6 is locked again.

In FIG. 27 is the fixed to the rail 3 plate-shaped member 30 'in a perspective view, seen on the underside, shown, on which integrally the activator 11 with the laterally projecting arm 11 a and the switching element 31 are integrally formed.

In FIG. 28 the coupling part 40 'is shown in a perspective view on the top, which has three channels 43', 44 ', and 46' and projections 45 ', 47' and 48 '. As in the previous embodiment, the switching element 31, the coupling member 40 'rotate when it is arranged, for example, without coupling the activator 11 in the closed position, as with reference to the FIGS. 20 to 23 was explained.

The above-described constructions and modes of operation are, of course, best realized by the use of components made of elastic plastics.

In the illustrated embodiments, compression springs 7 are always used, which can be stretched between the end stops 8 and 9. Alternatively, it is also conceivable to use tension springs, which are then preferably connected in the region of the running rail 3 facing the front ends of the driver 6 at this. This also makes a compact design of the entire self-retracting device 4 possible.

Finally, it should be noted that even with the use of only one compression spring 7 or a corresponding tension spring advantages of the invention of the overall construction can be achieved.

LIST OF REFERENCE NUMBERS

1

pull-out guide

2

guide rail

3

runner

4

Self-closing device

5

casing

6

takeaway

7

compression spring

8th

end stop

9

end stop

10

coupling part

10a

cam

10b

button

10c

retaining edge

10d

trap chamber

11

activator

11a

boom

12

holding arm

13

locking cams

14

engaging recess

15

damper

16

recess

17

pinion

18

rack

19

hinge

20

hinge

21

joint

22

section

30

component

30 '

plate-shaped component

31

switching element

40

coupling part

40 '

coupling part

41

latching web

42

axis

42 '

axis

43

channel

43 '

Einfahrkanal

44

channel

44 '

channel

45

head Start

45 '

head Start

46

channel

46 '

channel

47 '

head Start

48 '

head Start

R

lever length

Claims (15)

1. A pull-out guide (1) for a pull-out furniture part, preferably a drawer, wherein the pull-out guide (1) comprises a guide rail (2) which can be fixed to a furniture body, and a running rail (3) which can be coupled to the pull-out furniture part, and optionally a middle rail which extends the pull-out distance, and is equipped with a self-retracting apparatus (4) comprising a housing (5) with a driver (6) which can be displaced in the housing within limits and is coupled to a spring-like energy storage unit, and the driver (6), when the running rail (3) is displaced in relation to the guide rail (2) from a basic position which is present when the pull-out part has been pushed all the way in, tensions the energy storage unit and in this process is in driver connection with an activator (11), said driver connection being disabled when the running rail (3) is displaced further and said driver (6) being blocked against displacement, and said blockage can only be disabled by renewed coupling between the activator (11) and the driver (6), whereupon the pull-out part is then moved back in the retracting direction by the energy storage unit, characterized in that the energy storage unit consists of at least one compression spring (7) or a tension spring which is connected to the driver (6) in the front end region of the same, said front end region facing the running rail (3), and that the driver has a coupling part (10, 40) for coupling with the activator (11), wherein the driver is provided with at least one retaining arm (12) which can be moved transversely to its displacement axis and has at least one latching cam (13), which - when the energy storage unit is tensioned - engages in at least one latching recess of the housing and is fixed in this position by the coupling part (10, 40).
2. A pull-out guide according to claim 1, characterized in that the energy storage unit consists of two compression springs (7), which are supported on the one hand on limit stops (8) of the housing (5) and on the other hand on limit stops (9) of the driver (6).
3. A pull-out guide according to claim 1 or 2, characterized in that the driver (6) is provided with two retaining arms (12) with latching cams (13).
4. A pull-out guide according to one of the preceding claims, characterized in that the coupling part (10, 40) is formed by a rotary slide which is rotatably mounted on the driver (5) and is provided with a control cam (10a) in which the activator (11) will engage and which is formed in such a way that the rotary slide can be twisted by the activator (11) into a release and blocking position.
5. A pull-out guide according to one of the claims 1 to 3, characterized in that the coupling part (10, 40) is integrally connected via integrally attached hinge arms (20) with the retaining arms (12) and comprises a deformable receiving shell or receiving claw for the activator (11), wherein the receiving shell or receiving claw releases the activator (11) in the blocking position of the energy storage unit (7) and is connected in an interlocking manner with the activator (11) when the energy storage unit is released.
6. A pull-out guide according to claim 5, characterized in that the coupling part (10, 40) is arranged in form of a half-shell whose opening faces the activator (11), and that the half-shell encloses the activator (11) in full or in part within the terms of a driver connection when the driver (6) is uncoupled.
7. A pull-out guide according to one of the claims 1 to 5, characterized in that the coupling part (10, 40) comprises a catch chamber (10d) which encloses the activator (11) nearly completely in the coupled state with the activator (11), which catch chamber is opened in the pull-out direction of the running rail (3) after blockage of the driver (5).
8. A pull-out guide according to one of the preceding claims, characterized in that the self-retracting apparatus (4) is provided with a damper (15).
9. A pull-out guide according to claim 8, characterized in that the damper (15) is a rotary damper.
10. A pull-out guide according to claim 9, characterized in that the rotary damper (15) is provided with a drive pinion (17) which meshes with a toothed rack (18) which is preferably integrally attached to the housing (5).
11. A pull-out guide according to one of the preceding claims, characterized in that the driver (6) and the respective coupling part (10, 40) are made of a plastic material.
12. A pull-out guide according to one of the preceding claims, characterized in that a switching element (31) is provided, by means of which the coupling part (40) can be actuated for coupling with the actuator (11).
13. A pull-out guide according to claim 12, characterized in that the switching element (31) produces a rotation of the coupling part (40) in order to align an orifice of the insertion channel (43) on the coupling part (40) with the activator (11).
14. A pull-out guide according to claim 12 or 13, characterized in that channels (43, 44, 46) are arranged on the coupling part (40) for accommodating the activator (11) and the switching element (31).
15. A pull-out guide according to one of the preceding claims, characterized in that an extension arm (11 a) is arranged on the activator (11), which extension arm is arranged on a side of the activator (11) which faces away from the rotational axis (42') of the coupling part (40').

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