EP1815768A1 - Closing- and damping device for a two-way opening drawer - Google Patents

Abstract

The device has a sliding part (9) including a cam (11) and adjustable transverse to an extracting unit (1). The sliding part is fastened at a corpus and is extractable into a closing position using tension springs (15, 16). The cam acts together with bends that are fastened to the extracting unit. The bends have a recess in the closing position of the extracting unit and are made of plastic. The cam is pressed in the recess using the tension springs in the closing position. The cam runs along tracks of the bends during pushing of the extraction unit into the corpus.

Description

The present invention relates to a retraction and damping device for a pull-out on both sides pull-out element, in particular drawer, in a freestanding body, which is slidably mounted in the direction of withdrawal in linear guides, and which is equipped at the front end portions each with a cover with detachable Locking means are provided, by means of which the covers are respectively lockable on the pull-out end side of the pull-out or on the body.

For one-sided extendable from a body pull-out elements, especially drawers, various retraction and damping devices are known. These retraction and damping devices have the goal that when inserting the Ausziehelementes the last portion of the insertion path is controlled, so that the pull-out is pulled into the inserted position, this retraction takes place in a subdued manner. With these devices it is avoided that, for example, when inserting the pull-out element a strong impact occurs, which causes a lot of noise. With such facilities, the pull-out is braked on the last region of the insertion path and performed in a damped manner in the fully inserted position.

Since the displacement path from the retracted position is carried out in both directions in extractable elements extending on both sides in a freestanding body, such known retraction and damping devices are not optimally suited for this type of application. These retraction and damping devices would, like the front covers of both sides extendable pull-out element, be carried out twice and each retraction and damping device would have to be coupled and disconnected, so that a double-sided automatic recovery and damping of the pull-out element against the inserted position would be reached.

The object of the present invention is thus to provide a retracting and damping device for a pull-out element which can be pulled out on both sides, which retracts and damps an extension element inserted from both sides into the closed position.

According to the invention, the solution of this object is achieved in that the retraction and damping device has a sliding transverse to the pull-out of the pull-out sliding part with a cam which is fixed to the body and spring means in a closed position can be pulled, and the cam interacts with curves on the Pull-out are attached, and which have in the closed position of the pull-out a recess, in which the cam on the sliding part in the closed position of the pull-out element is pressed by the spring means.

With this simply constructed retraction and damping device the desired functions of retraction and damping are met for inserted from both sides pull-out elements in an optimal way.

Advantageously, from the indentation, the curve has a first curved path on both sides, along which the cam of the sliding part runs when the pull-out element pushes into the carcass. As a result, an optimal sequence of movements during the pulling-in process of the pull-out element into the body can be achieved.

In an advantageous manner, a pivotable tongue closing off the unused curved path is provided between first curved paths running away from the indentation on both sides. By this tongue is avoided that when running the cam on the corresponding curved path lifting this cam can enter from the web.
A further advantageous embodiment of the invention is that of the indentation, the curve on both sides has a second curved path along which the cam of the sliding part when pulling out the Ausziehelementes from the body runs, which has a lower slope of the indentation than the first curved path, and which second curved path again opens into the first curved path. Due to the lower slope of this web is achieved that the tensioning of the spring means of the retraction and damping device with less force is possible.

Advantageously, third cam tracks are attached to the outer region facing away from the indentation of the curve, which have a sloping shape towards the respective pull-out side of the pull-out element. As a result, the sliding part, if it has been withdrawn in the extended state of the pull-out element for some reason in the closed position, be brought back into the correct position by the springs are tensioned again.

Advantageously, the sliding part cooperates with a locking arrangement, by means of which the sliding part with the cam in the closed position opposite the closed position can be locked. With this arrangement, it is avoided that the spring relaxed in the fully extended state of the pull-out and these must be re-tensioned during insertion, before the self-feeding and steaming begins.

Advantageously, the locking arrangement is provided with a pivotable from a locked position to an unlocked position latch which is controllable via a further curve path provided on the curve. This gives a simple structure of this arrangement.

Advantageously, the sliding part is equipped with a cooperating with the spring means damping element, whereby an optimal operation is achieved.

Advantageously, the spring means are mounted on both sides of the sliding part tension springs, and the damping element is a piston-cylinder unit, which is mounted between the two tension springs. This gives you optimal functionality.

A further advantageous embodiment of the invention is that the curve consists of a plate, preferably of plastic, and that the cam tracks are milled into the plate tracks. This results in a simple method of production.

Advantageously, the cam is designed as a roller rotatably mounted on an axis. This role can be unrolled on the tracks with little friction.

An embodiment of the invention will be explained in more detail by way of example with reference to the accompanying drawings.

• Fig. 1 in räumlicher Darstellung eine Teilansicht eines Ausziehlementes mit Lagerung und Einzieh- und Dämpfungseinrichtung;
• Fig. 2 in schematischer Darstellung eine Draufsicht auf die erfindungsgemässe Einzieh- und Dämpfungeinrichtung, bei welcher das Ausziehelement in der geschlossenen Position ist;
• Fig. 3 in schematischer Weise eine Ansicht auf die erfindungsgemässe Einzieh- und Dämpfungseinrichtung in leicht ausgezogenem Zustand des Ausziehelementes;
• Fig. 4 in schematischer Weise eine Draufsicht auf die erfindungsgemässe Einzieh- und Dämpfungseinrichtung in einer weiter ausgezogenen Position des Ausziehelementes;
• Fig. 5 in schematischer Weise eine Draufsicht auf die Einzieh- und Dämpfungsvorrichtung, in welcher das Ausziehelement voll auf eine Seite ausgezogen ist;
• Fig. 6 in schematischer Weise eine Draufsicht auf die Einzieh- und Dämpfungseinrichtung, welche das Ausziehelement in einer Einschubphase zeigt;
• Fig. 7 in schematischer Weise eine Draufsicht auf die Einzieh- und Dämpfungseinrichtung, welche das Ausziehelement in einer noch weiter eingeschobenen Position zeigt;
• Fig. 8a eine Schnittdarstellung durch die Verriegelungsanordnung, wobei sich der Riegel in der verriegelten Position befindet; und
• Fig. 8b eine Schnittdarstellung durch die Verriegelungsanordnung , wobei sich der Riegel in der gelösten Position befindet.

It shows

• Figure 1 in a spatial representation of a partial view of a Ausziehlementes with storage and retraction and damping device.
• Figure 2 is a schematic representation of a plan view of the inventive retraction and damping device, wherein the Ausziehelement is in the closed position.
• Figure 3 is a schematic view of the inventive retraction and damping device in a slightly extended state of the pull-out.
• 4 is a schematic plan view of the inventive retraction and damping device in a further extended position of the pull-out element;
• Fig. 5 is a schematic plan view of the retraction and damping device, in which the pull-out element is fully extended to one side;
• Fig. 6 is a schematic plan view of the retraction and damping device, showing the pull-out element in an insertion phase;
• Fig. 7 is a schematic plan view of the retraction and damping device, showing the pull-out element in a still further inserted position;
• Fig. 8a is a sectional view through the latch assembly with the latch in the locked position; and
• Fig. 8b is a sectional view through the locking assembly, wherein the latch is in the released position.

In Fig. 1, the pull-out element 1 is shown in a spatial representation (with dotted lines), which has the shape of a drawer. This drawer is extendable along linear guides 2 in the direction of the double arrow 3 on both sides of a body, not shown. Here, one part 4 of the linear guide 2 is attached to the drawer 1, while the other part 5 of the linear guide 2 is fixed to the body, not shown. This other part 5 of the linear guide has an angle section 6. In the region of the linear guide 2, the locking device 7 is shown, with which the rear cover, not shown, can be locked to the drawer 1. Of course, such a locking device 7 is provided in each corner region of the drawer, these locking devices 7 cause the cover on the extendable side is connected to the drawer, while the opposite cover is connected to the body. When the drawer 1 is pulled out in the other direction, the locking devices ensure that the cover which is in each case located on the pull-out side of the drawer is locked to the drawer, while the opposite cover is locked to the carcass.

At fixedly connected to the body, not shown angle profile 6, a rail 8 is fixed, in which the sliding part 9 is slidably mounted. The direction of displacement of this sliding part 9, represented by the double arrow 10, is perpendicular to the pull-out direction of the drawer and consequently to the double arrow 3. The sliding part 9 is equipped with a cam 11.

At the bottom of the bottom 12 of the drawer 1, a plate 13 is fixed, which is provided with a plurality of curved paths, as will be described in detail later. In this plate 13, which consists of plastic, the curves are milled from the bottom seen, the plate then rests with the flat side on the bottom of the bottom 12 of the drawer. Instead of using a plate in which the curves are milled, and a finished, the curves already exhibiting molded plastic could be made and used.

The sliding part 9 is provided with a bracket 14, on whose legs in each case a tension spring 15 and 16 is mounted. The other ends of the tension springs 15 and 16 are each mounted on one end of a transverse web 17, which is fixed to the end of the rail 8 facing away from the linear guide 2. About these springs 15 and 16, the sliding part 9 is pulled with the cam 11 against the transverse web 17, the cam 11 is thereby pressed against the curve of the plate 13, as will be seen later in detail. In the region adjacent to the cam 11, a locking arrangement 18 is attached to the rail 8, which will also be described in detail later.

The operation of the retraction and damping device will now be described with reference to FIGS. 2 to 7. As can be seen from these figures, a recess 19 is mounted in the plate 13 in the central region. From this recess 19 from each extending on both sides a first Curved track 20 and a second cam track 21. In the situation shown in Fig. 2, the drawer 1 is in the retracted position in the body. The plate 13 is thus symmetrical with respect to the cam 11, this means that the cam 11 is located in the recess 19 of the curves, that is, the sliding part 9 is in the retracted position, which is achieved by the tension springs 15 and 16. The latch 22 of the latch assembly 18 is in the unlocked state.

Now, when the drawer 1 is pulled out together with the plate 13 in Fig. 2 to the right, as indicated by arrow 24, one reaches the situation, as shown in Fig. 3. The cam 11 leaves the indentation 19 and runs along the left-side second cam track 21. By increasing this second cam track 21, the sliding part 9 is displaced against the spring force 15 and 16 against the locking device 18 out. The two tension springs 15 and 16 are tensioned. The latch 22 of the latch assembly, which is controlled by the further cam track 23, is released. The sliding part 9 is not locked yet.

Upon further extension of the drawer 1 in the direction of the arrow 24, as shown in Fig. 4, the cam 11 reaches the highest point of the second cam track 21, the slider 9 is thus in the fully extended position, the latch 22 of the locking assembly 18 now latches into a slot 26 which is attached to the sliding part 9. The springs 15 and 16 are now in fully tensioned state.

The drawer 1 can now be fully extended, as shown in Fig. 5. By the latch 22, which is latched in the slot 26 which is attached to the sliding part 9, the sliding part remains in the fully extended position. The springs 15 and 16 are fully cocked.

The drawer 1 can now be pushed back against the retracted position in the direction of the arrow 25, as shown in Fig. 6. The sliding part 9 is still in the locked position. The cam 11 thus does not follow when pushing back the drawer 1 more of the second curved path 21, but enters the first curved path 20 a. When the cam 11 has reached the first curved path 20, as shown in Fig. 6, the bolt 22 comes into the sphere of influence of the other curved path 23. When pushing the drawer in the direction of the arrow 25, the bolt 22 by the further curved path 23rd lifted and releases the slot 26.

Now, when the point of this first curved path 20 is reached at which the falling of the first curved path 20 begins, draw the two tensioned tension springs 15 and 16, the sliding part 9 along the sloping first cam track 20 against the recess 19 out, as shown in Fig. 7 is shown. Thus, the retraction of the sliding part 9 can not be done too quickly, one end of a damping element 27 is hinged to the bracket 14 and the crossbar 17. This damping element 27, which is in a known manner a piston-cylinder unit, causes a dampening of the retraction movement of the sliding part 9, the drawer 1 is thus gently pulled into the retracted position. The cam 11 in this case moves along the first curved path 20 until it reaches the recess 19.

In order to avoid that the cam 11 can penetrate during the process in the first curved path 20 by any manipulation in the symmetrically arranged first cam track 20 and so the movement would be disturbed, a pivotable tongue 28 is disposed between the first two cam tracks 20. This pivotable tongue 28 locks when inserting the drawer 1, the respectively not used cam track 20. This ensures a safe flow is achieved. In the fully retracted position, the situation is again reached, as has been shown in Fig. 2.

From here, the drawer 1 can now be extended to the other side as previously described. Here, the processes take place in exactly symmetrical manner, as they have been described to Figs. 2 to 7.

The slope of the second curved path 21 seen from the recess 19 forth is less than the slope of the first curved path 20, also seen from the recess 19 ago. This ensures that when extending the drawer from the retracted position by the lower pitch of the second cam track 21, the force for tensioning the tension springs 15 and 16 is relatively low. As a result, the drawer 1 can be brought from the inserted to an extended position with little effort. As a result of the greater incline of the first curved track 20 as seen from the indentation 19, it is achieved that the retraction process for retracting the drawer 1 into the retracted position takes place with greater force. This ensures that the drawer 1 is pulled into the fully retracted position, caused by the tensile force of the tension springs 15 and 16 in cooperation with the sliding part 9 and the cam eleventh

Should for any reason in the extended state of the drawer 1, the bolt 22 of the locking device 18 are released, and should thereby the sliding part 9 are moved to the retracted position, which would be done by the tensile force of the springs 15 and 16, are at the indentation 19 facing outward third cam tracks 29 mounted, which have against the respective pull-out of the drawer 1 out a sloping shape. When inserting the drawer 1 then the cam 11 would accumulate on this third curved path 29, the sliding part 9 would be against the spring force of the springs 15 and 16 extended, in the upper region of the third curved path 29 then the bolt 22 in the slot 26 of the sliding part. 9 engage, the sliding part 9 would then again in the biased position, as it is desired when entering the first curved path 20.

From Figs. 8a and 8b, the sliding part 9 can be seen, which is equipped with the cam 11. In this case, the cam bears against the first curved path 20. Also seen in Figures 8a and 8b is the latch assembly 18 in which the latch 22 is pivotally supported about an axis 30. In Fig. 8a, the sliding part 9 is in the locked position. The bolt 22 is thus outside the sphere of influence of the other cam track 23, the bolt 22 is pivoted about the compression spring 31 so that the bolt 22 in the slot 26 of the sliding part 9 engages. If now when moving the drawer, the bolt 22 comes into the effective range of the other curved track 23, the bolt 22 is pivoted against the spring force of the compression spring 31 about the axis 30, the bolt is thereby lifted out of the slot 26 of the sliding part 9, the sliding part. 9 will be unlocked.

As is also apparent from FIGS. 8a and 8b, the cam 11 is formed as a roller 32 which is rotatably supported on a journal 33, which journal 33 is attached to the sliding part 9. As a result, between cam 11 and cam tracks only a small rolling friction, which makes the desired functions reliable.

With this inventive retraction and damping device for a pull-out on both sides pull-out element, in particular drawer, an automatic retraction of the drawer is obtained in the inserted position, the movements are carried out very gently by the damping means.

Claims (11)

Pulling and damping device for a pull-out on both sides pull-out element (1), in particular drawer, in a free-standing body, which is displaceably mounted in the extension direction in linear guides (2), and which is equipped at the front end portions each with a cover, with releasable locking devices (7) are provided, by means of which the covers are respectively lockable on the extension-side end face of the pull-out element (1) or on the body, characterized in that the pull-in and damping device has a sliding part (9) displaceable transversely to the pull-out direction of the pull-out element (1). with a cam (11) which is fixed to the body and spring means (15, 16) can be pulled into a closed position, and the cam (11) cooperates with curves which are attached to the pull - out element (1), and which in the Closing position of the pull-out (1) have a recess (19), in which the cam (11) via the sliding part (9) in the closed position of the pull-out element (1) by the spring means (15, 16) can be pressed. Pulling and damping device according to claim 1, characterized in that from the indentation (19) has the curve on both sides towards a first cam track (20) along which the cam (11) of the sliding part (9) upon insertion of the Ausziehelementes ( 1) runs in the body. Pulling and damping device according to claim 2, characterized in that between the both sides of the indentation (19) running away first cam tracks (20) the unused curved track closing, pivotable tongue (28) is mounted. Pulling and damping device according to one of claims 1 to 3, characterized in that from the indentation (19) has the curve on both sides towards a second cam track (21), along which the cam (11) of the sliding part (9) Extracting the pull-out element (1) extends from the body, which of the indentation (19) ago a smaller Slope has, as the first cam track (20), and which second cam track (21) opens again into the first cam track (20). Pulling and damping device according to one of claims 1 to 4, characterized in that at the indentation (1) facing away from the curve outside third cam tracks (29) are mounted, which have against the respective pull-out of the pull-out (1) out a sloping shape , Pulling and damping device according to one of claims 1 to 5, characterized in that the sliding part (9) cooperates with a locking arrangement (18), by means of which the sliding part (9) with the cam (11) in the closed position opposite fully extended Lockable position. Pulling and damping device according to claim 6, characterized in that the locking arrangement (18) is provided with a latch (22) which can be pivoted from a locked position into an unlocked position and which is controllable via a further cam track (23) provided on the curve. Pulling and damping device according to one of claims 1 to 7, characterized in that the sliding part (9) with a with the spring means (15, 16) cooperating damping element (27) is equipped. Pulling and damping device according to claim 8, characterized in that the spring means (15, 16) from both sides of the sliding part (9) mounted tension springs, and that the damping element (27) is a piston-cylinder unit, which between the two tension springs (15, 16 ) is attached. Pulling and damping device according to one of claims 1 to 9, characterized in that the curve consists of a plate (13), preferably made of plastic, and that the cam tracks (20, 21, 29) in the plate (13) milled tracks are. Pulling and damping device according to one of claims 1 to 10, characterized in that the cam (11) as on an axis (30) rotatably arranged roller (32) is formed.

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