DE102011053840B4 - Pull-in device for installation in a pull-out guide - Google Patents

Abstract

Retraction device (5) for installation in a pull-out guide consisting of a fixable guide rail (2), a running rail (3) that can be coupled to a pull-out element and, if necessary, at least one extension-lengthening middle rail (4) arranged between the guide rail (2) and running rail (3), wherein the retraction device (5) has a housing (6) with a driver (8) guided therein and connected to an energy storage device (7) and controlled by an activator (30), which takes a retraction position when the energy storage device (7) is partially tensioned or relaxed this can be displaced out through the activator (30) while simultaneously tensioning the energy store (7) into a pretensioning position in which the driver (8) is fixed and separated from the activator (30) which, when moved in the direction of the retraction position, the driver (8 ) unlocked, wherein in a housing wall (11) a guide groove (10) angled at the end for guiding and controlling the Mitn Ehmers (8) is provided, characterized in that the driver (8) has a guide slot (18) on its side facing away from the guide groove (10) into which a guide web (19) connected to the corresponding housing wall (20) engages.

Description

The present invention relates to a pull-in device for installation in a pull-out guide consisting of a fixable guide rail, a running rail that can be coupled to a pull-out element and, if necessary, at least one extension-lengthening middle rail arranged between the guide rail and the running rail, the pull-in device having a housing with an energy storage device guided therein and has a driver controlled by an activator, which assumes a retraction position when the energy storage device is partially tensioned or relaxed and can be moved out of this position by the activator while tensioning the energy storage device into a pretensioning position in which the driver is fixed and separated from the activator, which is moved into In the direction of the pull-in position, the driver is unlocked, with a guide groove angled at the end being provided in a housing wall for guiding and controlling the driver.

Retraction devices of the generic type are known per se and ultimately serve to support the insertion of pull-out elements into their closed position by releasing the tensioned energy storage device of such a pull-in device from a given insertion depth and using the stored energy to safely pull the pull-out element into the closed position .

The DE 203 11 795 U1 discloses an automatic drawer pull-out slide with a guide rail to be fastened to a body wall of a piece of furniture and a slide rail to be fastened to the drawer - possibly with the interposition of a middle rail - relative to the guide rail. A pawl housing with a pawl component is provided on one of the two outer rails and has a receptacle for a driver provided on the other rail. The pawl component can be moved into an end position with the driver under the action of the spring tension, a damper acting on the pawl component being provided to brake the retraction movement of the pawl component.

In the case of draw-in devices of the generic type, that is to say in the case of draw-in devices that are to be integrated into a pull-out guide, it is very important that these draw-in devices are extremely compact and at the same time relatively stable and resilient.

The present invention is based on the object of creating a retraction device of the generic type which is characterized on the one hand by an extremely compact design and on the other hand by high stability and resilience.

The object is achieved in a generic draw-in device in that the driver has a guide slot on its side opposite the guide pins, into which a guide web connected to the corresponding housing wall engages.

The advantage of this construction is that the housing of the draw-in device is extremely stiffened by the connection of the guide web and is therefore extremely resilient despite its compact design.

A further improvement in the stability and rigidity of the housing is achieved if, according to a further development of the invention, the walls having the guide web and the walls provided with the guide groove are connected to one another by side wall sections in the overlap area of the angled end of the guide groove. This results in a cap-like closure of the housing in the front area of the retraction device with a high stabilizing effect, but without increasing the dimensions of the housing.

In a retraction device of the type according to the invention, which is provided with a pneumatic or hydraulic damper, the longitudinal axis of which runs centrally to the guide groove and whose piston rod is rotatably coupled in a receiving block of the driver, a further development of the invention provides that the receiving block is slightly in the guide groove immersed and the housing wall having the guide groove is provided with a cutout, the depth of which corresponds to the extent by which the receiving block is immersed in the guide groove.

This ensures that the damper can be built into the housing without protruding beyond the housing, thereby preserving the compact design of the entire retraction device and accepting only a slight weakening of the material due to the cut-out, in order to unobstruct the receiving block in the connection area to the piston rod up to to be able to move its end position.

As a result of the compact design, the housing of the draw-in device can alternatively also be fixed to the running rail and the activator can be fixed to the guide rail, since even by the moving together with the running rail Housing no installation space is required outside of the pull-out guide.

Pull-out guides with pull-in devices according to the invention are used where pull-out elements, for example drawers, food carriers or armrests, are to be moved linearly, for example furniture, household appliances, laboratory and workshop equipment, vehicles, camping vehicles or ships.

Further features of the invention are the subject of further subclaims.

• 1 eine perspektivische Darstellung einer Auszugsführung mit einer in dieser Auszugsführung integrierten Einzugsvorrichtung;
• 2 eine Ansicht in Richtung des Pfeils II in 1 im vergrößerten Maßstab;
• 3 eine Perspektivdarstellung der Auszugsführung in einer der Darstellung gemäß 1 gegenüberliegenden Blickrichtung gezeigt;
• 4 die in 3 mit IV bezeichnete Einzelheit in vergrößerter Darstellung;
• 5 eine der 3 entsprechende Perspektivdarstellung in einer von 3 abweichenden Verschiebeposition;
• 6 die in 5 mit VI bezeichnete Einzelheit vergrößerter Darstellung;
• 7a-7d Schnittdarstellungen durch einen erfindungsgemäßen Selbsteinzug in unterschiedlichen Verschiebepositionen eines Mitnehmers des Selbsteinzuges;
• 8 eine vergrößerte Darstellung der in 7c mit VIII bezeichneten Einzelheit;
• 9 eine vergrößerte Darstellung der in 7d mit IX bezeichneten Einzelheit;
• 10 eine Perspektivdarstellung des Selbsteinzugs gemäß den 7 bis 9;
• 11 eine Explosionsdarstellung der Einzugsvorrichtung gemäß 10;
• 12 eine Teilansicht in Richtung des Pfeils XII in 10;
• 13 einen Schnitt nach der Linie XIII in 12, wobei der Schnitt um 90°gedreht dargestellt ist;
• 14 einen Schnitt nach der Linie XIV in 13;
• 15 einen Schnitt nach der Linie XV in 13;
• 16a-d verschiedene Ansichten bzw. Perspektivdarstellungen eines Mitnehmers der Einzugsvorrichtung gemäß der Erfindung.

An embodiment of the invention is shown in the accompanying drawings and is described in more detail below. Show it:

• 1 a perspective view of a pull-out guide with a pull-in device integrated in this pull-out guide;
• 2 a view in the direction of arrow II in FIG 1 on an enlarged scale;
• 3 a perspective view of the pull-out guide in one of the representation according to 1 shown opposite viewing direction;
• 4th in the 3 with IV designated detail in an enlarged view;
• 5 one of the 3 corresponding perspective view in one of 3 deviating shift position;
• 6th in the 5 with VI designated detail enlarged view;
• 7a-7d Sectional views through a self-closing mechanism according to the invention in different shifting positions of a driver of the self-closing mechanism;
• 8th an enlarged view of the in 7c with VIII designated detail;
• 9 an enlarged view of the in 7d item marked IX;
• 10 a perspective view of the self-closing according to the 7th to 9 ;
• 11 an exploded view of the retraction device according to 10 ;
• 12th a partial view in the direction of arrow XII in 10 ;
• 13th a section along the line XIII in 12th , the section being shown rotated by 90 °;
• 14th a section along the line XIV in 13th ;
• 15th a section along the line XV in 13th ;
• 16a-d various views or perspective representations of a driver of the pull-in device according to the invention.

In the drawings, is generally designated by the reference number 1 denotes a pull-out guide for a pull-out element which has a guide rail which can be fixed to a stationary element, for example a furniture body 2 , a slide rail that can be coupled to a pull-out element, for example a drawer 3 as well as an optional extension-extending center rail arranged in between 4th includes. Like in particular the 1 to 6th make it clear is between the guide rail 2 and the running rail 3 in a manner known per se with a total of the reference number 5 designated retraction device mounted.

The basic structure of the feeding device 5 is known per se. The feeder 5 essentially comprises a housing 6th with one guided in it as well as with an energy storage mechanism 7th associated driver 8th on that has an activator 30th (see here in particular 4th ) is controllable. The case 6th is on the guide rail 2 set. The driver 8th is on one side with guide pins 9 equipped, which in a guide groove 10 a housing wall 11 of the housing 6th intervene and are performed herein, in particular the 8th and 9 make it clear that the guide groove 10 has an angled portion 10a.

The driver 8th can in a known manner from a retracted position (in the case of a drawer, for example, corresponds to the position of this drawer completely retracted into the furniture body) through the into a recess 12th intervening activator 30th on the running rail 3 is set, while at the same time tensioning the energy storage mechanism 7th be moved in the opening direction into a preload position in which the driver 8th with its front guide pin 9 in the angled area 10a of the guide groove 10 proceeded. The driver is in this position 8th tilted into an inclined position in which the activator 30th the recess 12th of the driver 8th can leave, with the driver 8th by transferring a guide pin 9 is secured against automatic retraction in the angled area 10a. If, during a closing process, a pull-out element is moved in the closing direction again, the activator strikes in the course of the closing movement 30th to one of the recess 12th of the driver 8th delimiting wall 13th at what the driver 8th set in a tilting movement and the guide pin located in the angled area 10a 9 back into the elongated area of the guide groove 10 is returned. This is the driver 8th released and can through the one in the lift mechanism 7th stored energy support the closing movement.

This basic sequence is known per se.

Parallel to the lift mechanism 7th is in the housing 6th a pneumatic or hydraulic damper 14th arranged, the piston rod 15th in a dome-shaped receiving block 16 of the driver 8th is rotatably coupled. The longitudinal axis of the damper 14th and according to the piston rod 15th does not run centrally in the projection to the guide groove 10 , but at a distance a, which is especially the 13th and 14th make clear. The admission block 16 dips slightly into the guide groove 10 one that has a free cut 17th on the side facing the projected longitudinal axis of the piston rod of the damper 14th having adjacent so that the housing 6th also kept narrow in its width and the damper 14th without protrusion into the housing 6th can be installed and the mounting block 16 not when the driver is moving 8th with the case 6th collided. Is the driver 8th Pulled out to its maximum position, ie tilted into an inclined position, the receiving block lies 16 in the extended area 17a of a cutout 17th one, the depth of which corresponds approximately to the extent by which the receiving block 16 when tilting into the inclined position also over the already in the guide groove 10 introduced free cut 17th deflects.

This means that the connection between the piston rod can move freely longitudinally 15th and the driver 8th guaranteed without raising the piston rod 15th , ie without the rotatably mounted end of the piston rod deflecting to the longitudinal axis of the damper 14th , can come.

As can also be seen from the drawings, the driver is 8th on its the guide pins 9 opposite side with a guide slot 18th Mistake. In this guide slot 18th grips constantly, ie over the maximum displacement of the driver 8th away, a guide walkway 19th one that is integral with that housing wall 20th is made, which of the guide groove 10 having housing wall 11 opposite and this housing wall 20th thus considerably reinforced.

In addition, the two housing walls 11 and 20th over a certain section by side wall sections 21 or. 22nd firmly connected to each other. In particular also through these side wall sections 21 and 22nd results in connection with the on the housing wall 20th integrally molded guide bar 19th overall a very high level of stabilization and stiffening of the entire housing 6th , so that despite the overall small and compact dimensions, a highly resilient embodiment of a pull-in device 5 is realized.

How special 4th is an activator 30th provided the one with two activator tines 30a Is provided. These activator tines 30a are both when the driver control is running properly 8th in the recess mentioned above 12th a (see 6th ).

Such a two-pronged version of the activator 30th , which is known in principle, facilitates and enables the restoration of a proper interaction of the activator in a simple manner 30th and driver 8th if it is caused by the entrainment 8th without inserting the activator 30th once to a misalignment of the driver 8th relative to the activator 30th should have come.

As an alternative to this, it is also possible to design the activator to be single-pronged and to design the driver with multiple teeth, which is, however, already known in principle in the prior art.

Corresponding designs are advantageous in the present case insofar as the corresponding areas are not readily accessible in the installed state and thus automatic troubleshooting is practically necessary in the event of possible operating errors.

With reference to the 16a to 16d it should be noted that the guide slot 18th with an extension 18a is equipped, which the tilting of the driver 8th opposite that in the guide slot 18th engaging guide bar 19th made possible without play between the guide slot 18th and the guide bar 19th Incidentally, having to choose unduly high.

Advantageously and in particular for reasons of cost, both the housing 6th as well as the driver 8th each be made in one piece from plastic.

The activator 30th can be a molded wire part or a sheet metal part as an individual part on the running rail 3 attached separately or integrally from the track 3 be issued.

Of course, the choice of other materials is also conceivable.

List of reference symbols

1.

Drawer slide

2.

Guide rail

3.

Running track

4th

Middle rail

5.

Feeder

6th

casing

7th

Energy storage

8th.

Carrier

9.

Guide pins

10.

Guide groove

11.

Housing wall

12th

Recess

13th

delimiting wall

14th

mute

15th

Piston rod

16.

Admission block

17th

Free cut

17a

_extended area

18th

Guide slot

18a

_Extension

19th

Guide bar

20th

Housing wall

21.

Sidewall section

22nd

Sidewall section

30th

Activator

30a.

Activator tines

Claims (10)

Retraction device (5) for installation in a pull-out guide consisting of a fixable guide rail (2), a running rail (3) that can be coupled to a pull-out element and, if necessary, at least one extension-lengthening middle rail (4) arranged between the guide rail (2) and running rail (3), wherein the retraction device (5) has a housing (6) with a driver (8) guided therein and connected to an energy storage device (7) and controlled by an activator (30), which takes a retraction position when the energy storage device (7) is partially tensioned or relaxed this can be displaced out through the activator (30) while simultaneously tensioning the energy store (7) into a pretensioning position in which the driver (8) is fixed and separated from the activator (30) which, when moved in the direction of the retraction position, the driver (8 ) unlocked, wherein in a housing wall (11) a guide groove (10) angled at the end for guiding and controlling the Mitn Ehmers (8) is provided, characterized in that the driver (8) has a guide slot (18) on its side facing away from the guide groove (10) into which a guide web (19) connected to the corresponding housing wall (20) engages. Feed device according to Claim 1 , characterized in that the guide web (19) and the housing walls (11), (20) provided with the guide groove (10) in the overlap area of the angled end (10a) of the guide groove (10) by side wall sections (21), (22) are connected to each other. Feed device according to Claim 1 with a pneumatic or hydraulic damper (14) whose longitudinal axis runs centrally to the guide groove (10) and whose piston rod (15) is rotatably coupled in a receiving block (16) of the driver (8), characterized in that the receiving block (16) is slightly immersed in the guide groove (10) and the housing wall (11) having the guide groove (10) is provided with a cutout (17), the depth of which corresponds to the extent by which the receiving block (16) is immersed in the guide groove (10). Feed device according to Claim 2 or 3 , characterized in that the guide web (19) engages in its guide groove (18) over the entire possible displacement path of the driver (8). Retraction device according to one of the preceding claims, characterized in that the guide groove (18) of the driver (8) has an enlargement (18a) which enables the driver (8) to be tilted. Retraction device according to one of the preceding claims, characterized in that the activator (30) is equipped with two activator prongs (30a). Feeding device according to one of the Claims 1 to 5 , characterized in that the activator (30) has an activator prong (30a) and a recess (12) in the driver (8), in which the activator (30) engages, is multi-toothed in a manner known per se. Draw-in device according to one of the preceding claims, characterized in that the housing (6) is made as a whole in one piece from plastic. Pull-in device according to one of the preceding claims, characterized in that the driver (8) is manufactured as a whole in one piece from plastic. Retraction device according to one of the preceding claims, characterized in that the activator (30) is manufactured separately as an individual part and is fixed to the running rail (3) or is issued integrally from the running rail 3.

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