Furniture pull-out, especially for a tall cabinet pull-out

Abstract

The present invention relates to a furniture pull-out, in particular for a tall cupboard, comprising a furniture part (6) that can be pulled out from a furniture body, can be pulled out in a pull-out direction (A) on a pull-out rail (16) and can be pushed in counter to the pull-out direction (A) and is mounted pivotably about a vertical axis when in the position pulled out fully, and comprising, on the pull-out rail (16), a blocking device (30), which allows the furniture part (6) to be pivoted only when in the position pulled out fully and to be pushed in only when in an unpivoted basic position, the blocking device (30) having a blocking slide (34), which, by pivoting the furniture part (6) into its position pulled out fully, is vertically displaceable in such a way that it blocks the furniture part (6) from being pushed in when the latter is not in the basic position. (Fig. 8)

Description

[0001] Furniture pull-out, especially for a tall cabinet pull-out

[0002] The invention relates to a furniture pull-out, in particular for a tall cupboard, with a furniture part which can be pulled out from a furniture carcass and which can be pulled out on a pull-out rail in a pull-out direction and pushed in counter to the pull-out direction and is pivotally mounted about a vertical axis in the fully pulled-out position, and with a blocking device on the pull-out rail which allows the furniture part to be pivoted exclusively in the fully pulled-out position and pushed in exclusively in a non-pivoted basic position.

[0003] Typically, a tall cabinet pull-out has a furniture part with a circumferentially closed frame, between whose vertical frame legs baskets, compartments or the like can be suspended. Objects can be arranged in the baskets, compartments or the like. In the home position, the furniture part is aligned parallel to the pull-out direction. In the fully extended position, the furniture part can be pivoted, making these objects easier to access. The locking device is designed so that pivoting is only possible when the furniture pull-out is fully extended. Insertion from the fully extended position of the furniture pull-out is only possible with the furniture part in the non-pivoted home position. This prevents incorrect operation and potentially resulting damage to the furniture pull-out. Such furniture pull-outs for tall cabinets are known, for example, from EP 1 820 422 A1.For this purpose, the pull-out guide features a locking mechanism with a locking lever. When the tall cabinet pull-out is pivoted, the locking lever is tilted in such a way that it interacts with a cabinet-mounted stop to prevent the tall cabinet pull-out from being pushed in. With the furniture part in its home position and the pull-out not fully extended, the locking lever is secured against tipping. The furniture part is fixed in its home position.

[0004] Another furniture pull-out for tall cabinets is known from EP 1 479 318 B1.

[0005] The object of the invention is to provide a furniture drawer with an alternative locking device that is more convenient to operate and simpler and more cost-effective to manufacture. According to the invention, this is achieved by a furniture drawer with the features of the characterizing part of claim 1.

[0006] In the furniture pull-out according to the invention, the blocking device comprises a locking slide that can be moved vertically between a locked position and a released position by the extendable furniture part, which can be pivoted about a vertical axis. The vertical direction is a direction parallel to the vertical axis about which the furniture part can be pivoted. The blocking device is actuated by pivoting the furniture part. The furniture pull-out is easy and intuitive to operate. Such a blocking device, and thus the corresponding furniture pull-out, is structurally very simple and cost-effective to manufacture.

[0007] The blocking device preferably comprises a locking element that secures the locking slide when the furniture pull-out is not fully extended. The locking element prevents movement of the locking slide. The locking slide is only released when the furniture pull-out is fully extended. Since the furniture part and the locking slide are designed and arranged such that pivoting of the furniture part is only possible in conjunction with movement of the locking slide, the extendable and pivoting furniture part can only be pivoted when the furniture pull-out is in a fully extended position. This protects the furniture pull-out against incorrect operation. The operating comfort of the furniture pull-out is further improved.

[0008] Particularly preferably, the locking element prevents the locking slide from shifting by blocking the sliding path of the locking slide when the furniture drawer is not fully extended. In particular, the locking element is arranged at least partially in the sliding path of the locking slide. This reliably prevents the locking slide from shifting unless the furniture drawer is fully extended. The operating safety and convenience of the furniture drawer are further improved.

[0009] The blocking device preferably has a deactivator that actuates the locking element when the furniture part is pulled out into the fully extended position, so that the locking element releases the locking slide for movement. The deactivator thus automatically releases the locking element as soon as and only when the furniture part has reached the fully extended position. Only then is it possible to pivot the furniture part and move the locking slide. The operating safety and convenience of the furniture extension are further improved.

[0010] Particularly preferably, the deactivator is designed as a stop that removes the locking element from the sliding path of the locking slide when the furniture part is pulled out to the fully extended position. The blocking device, and thus the furniture extension, are designed to be particularly simple and reliable. The ease of use of the furniture extension is further increased.

[0011] The furniture pull-out preferably comprises a stop block which interacts with the locking slide, which has been pushed out by the furniture part pivoted from its home position in the fully extended position, in such a way that insertion of the furniture part against the extension direction is prevented. A dedicated stop block forms a defined surface with which the locking slide can interact. In addition, it can reliably absorb the forces exerted by the locking slide to prevent the furniture part from being pushed in. The reliability and service life of the furniture pull-out are further improved. Ease of use is maintained for a long time. An actuating element for actuating the locking slide is preferably arranged on the pull-out furniture part. The displacement of the locking slide in the vertical direction is triggered or completely effected by the actuating element when the furniture part is pivoted from its home position.A dedicated actuating element ensures that the locking slide moves particularly reliably and conveniently.

[0012] Particularly preferably, the locking slide has a guide contour, wherein the actuating element can be brought into engagement with the guide contour and, in particular, is engaged with the guide contour in the home position. The guide contour and the actuating element engaged with the guide contour form a slotted guide for the controlled displacement of the locking slide. The guide contour and actuating element can also disengage when the furniture part is pivoted out of the home position, and they reengage with each other when pivoted in the opposite direction, toward the home position. This makes it easy to implement a blocking device that is actuated by the pull-out furniture part when it is pivoted.The locking slide is actuated in particular to block the insertion of the extended furniture pull-out when the pull-out furniture part has been pivoted out of the home position, and to release the insertion of the extended furniture pull-out when the pull-out furniture part is in the home position. In this way, a reliable furniture pull-out can be realized in a simple and cost-effective manner. Furthermore, the guide contour is particularly preferably V-shaped with outwardly widening inlet areas for the actuating element. Due to the V-shaped guide contour, the actuating element can cause displacement in the vertical direction both upwards and downwards and the furniture part can be pivoted on both sides around the vertical axis from the home position.When the furniture part is in its home position, the actuating element is preferably positioned within the V-shaped guide contour and, when the locking slide is engaged (i.e., when the furniture part is not fully extended from the cabinet), secures the furniture part against pivoting out of its home position, particularly through the locking element. The inlet areas are also located on both sides and facilitate the re-engagement of the guide contour and actuating element when they become disengaged due to pivoting. The guide contour and the operating element interact particularly reliably. The ease of use of the furniture extension is further improved.

[0013] Preferably, the locking slide is moved downwards in the direction of gravity under its own weight, or remains in the downward position until it is raised again. The locking slide can also be moved, for example, by spring preload. If the locking slide's own weight is used in the direction of gravity, however, no spring preload is necessary. The blocking device can be manufactured more easily and cost-effectively without a corresponding preload spring. A preload spring that is not present cannot be damaged or fail. The furniture pull-out is particularly durable and easy to use. The pull-out rail preferably comprises at least a two-part pull-out, with the stop block being fixed in position relative to the furniture body.The at least two-part pull-out section must be designed in such a way that the furniture part can be moved into a fully extended position located completely in front of the furniture body, where it can be pivoted from its home position. This can be achieved particularly easily with multi-part pull-outs, especially those designed as full-extension pull-outs. A stop block fixed relative to the furniture body is particularly easy to implement and particularly reliable. The furniture pull-out is particularly convenient to operate.

[0014] In an alternative preferred embodiment, the pull-out rail comprises at least three-part and synchronized pull-out with a first rail segment connected to the furniture part, at least one further rail segment, and a second rail segment connecting the first and the further rail segments. The locking slide is designed to secure two adjacent rail segments against one another when the pull-out rail is fully extended in the locked position. Since the pull-out is synchronized, securing two adjacent rail segments against one another also secures all other rail segments relative to one another. When using a synchronized pull-out, the stop block no longer necessarily has to be arranged stationary relative to the furniture body, which makes the furniture pull-out more flexible and easier to manufacture. In principle, pull-outs with more than three rail segments can be used.However, these are comparatively very expensive. Three-section pull-outs are particularly cost-effective and can be synchronized particularly easily. Furthermore, pull-outs with exactly three rail segments can be synchronized particularly easily, and synchronized three-section pull-outs are particularly reliable.

[0015] Particularly preferably, the first and second rail segments can be secured against each other, with the stop block being arranged on the second rail segment. The locking slide and the stop block can be brought into engagement to secure the first rail segment and the second rail segment against each other. This makes it easy to create a reliable and durable blocking device and, consequently, a correspondingly reliable and durable furniture extension.

[0016] Furthermore, the deactivator is particularly preferably attached to the second rail segment. The deactivator attached to the second rail segment makes it particularly easy to ensure that the locking element releases the locking slide when the first rail segment and the second rail segment are correctly aligned with one another. The blocking device and thus the furniture pull-out are designed to be particularly simple and reliable. The ease of use of the furniture pull-out is further increased. Preferably, the pull-out guide comprises a frame holder arranged so as to be pivotable about the vertical axis for receiving the furniture part which can be pivoted and pulled out about the vertical axis. Particularly preferably, the pivotably arranged frame holder is arranged on the first rail segment. The frame holder simplifies the assembly of the furniture part on the pull-out guide. The reliability and ease of use of the furniture pull-out can be guaranteed more easily.

[0017] The pull-out device preferably has a position-locking device for securing the pull-out furniture part in a predefined pivoting position. This can be achieved, for example, by locking it into predetermined locking positions, which can only be released by overcoming a resistance. This provides the user of the furniture pull-out with clear feedback when the furniture part has been pivoted into specific pivoting positions or the home position. The ease of use of the furniture pull-out is further improved.

[0018] Particularly preferably, the position-securing device comprises a positioning disc arranged on the pull-out, in particular on the first rail segment, and a positioning pin arranged on the furniture part, in particular its frame holder. The positioning disc has recesses that correspond to specific pivot positions of the furniture part. When the furniture part is pivoted into a pivot position, the positioning pin is arranged in the corresponding recess of the positioning disc. The furniture part is fixed in the pivot position. By applying a force to the furniture part, the positioning pin is released from the recess of the positioning disc, and the furniture part can be pivoted into the home position or into another pivot position. In particular, a corresponding recess in the positioning disc is also assigned to the home position. The position-securing device can thus be implemented particularly simply and cost-effectively.

[0019] Further advantages and details of the invention can be found in the following description of the figures with exemplary embodiments according to the invention.

[0020] The figures show schematically:

[0021] Fig. 1 shows a tall cabinet comprising a furniture body and a furniture pull-out according to the invention in a partially extended position;

[0022] Fig. 2 the tall cabinet according to Fig. 1 in the fully extended

[0023] Position with the furniture part in the basic position;

[0024] Fig. 3 the tall cupboard pull-out according to Fig. 2 with the furniture part in a position wasted from the basic position;

[0025] Fig. 4 is a plan view of a pull-out guide of the inventive

[0026] Furniture pull-out in the fully extended position with the locking element in the release position, wherein the locking element is released for movement into the locking position by the locking element;

[0027] Fig. 5 is a side view of the pull-out guide according to Fig. 4;

[0028] Fig. 6 is a detailed view of Fig. 5;

[0029] Fig. 7 is an alternative view of the pull-out guide according to Fig. 4;

[0030] Fig. 8 is a detailed view of Fig. 7;

[0031] Fig. 9 shows the pull-out guide according to Fig. 4 in a partially inserted state with the locking element in the release position with a locking element fixing the locking element in the release position;

[0032] Fig. 10 is a side view of the pull-out guide according to Fig. 9;

[0033] Fig. 11 is a detailed view of Fig. 10;

[0034] Fig. 12 an alternative view of the pull-out guide according to Fig. 9;

[0035] Fig. 13 is a detailed view of Fig. 12; Fig. 14 is an alternative view of the pull-out guide according to Fig. 4;

[0036] Fig. 15 is a detailed view of Fig. 14;

[0037] Fig. 16 a sectional view of the blocking device of the pull-out guide with the locking slide in the release position;

[0038] Fig. 17 the pull-out guide according to Fig. 4 with alternative sectional view;

[0039] Fig. 18 is a sectional view of Fig. 17;

[0040] Fig. 19 is a detailed view of Fig. 18;

[0041] Fig. 20 to 25 different views of the pull-out guide according to Fig. 4 with the furniture part pivoted from the basic position and the locking slide in the locking position;

[0042] Fig. 26 to 28 show various views of the pull-out guide according to Fig. 4 with the furniture part pivoted further from the basic position compared to the illustrations according to Fig. 20 to 25; Fig. 29a to 31b show detailed illustrations of the position-securing device with the pull-out guide in the basic position and in two different pivot positions.

[0043] Parts with the same or similar functions are provided with identical reference numerals where appropriate. Individual technical features of the exemplary embodiments described below can be combined with the features of claim 1 as well as with the features of individual previously described exemplary embodiments to form inventive objects.

[0044] Fig. 1 to Fig. 3 show a tall cabinet 2 with the furniture pull-out 3. The furniture pull-out 3, designed here as a tall cabinet pull-out, has a furniture part 6, which is shown in Fig. 1 to Fig. 3 in various pull-out positions. The tall cabinet 2 has a furniture carcass 4, in which the furniture part 6 is arranged via an upper guide 14 and a lower guide 16, referred to below as the pull-out guide. The furniture part 6 comprises a frame 8, on which shelves 10 are suspended. Objects can be arranged on the shelves 10. A front 12 is arranged on the frame 8, with which the furniture carcass 4 is closed when the tall cabinet 2 is closed. Fig. 1 shows the tall cabinet 2 in a partially open position with the tall cabinet pull-out 6 in its basic position. In Fig. 2, the tall cabinet pull-out 6 is shown fully extended in the basic position.In the basic position, the tall cabinet pull-out 6 can be pulled out of the furniture body 4 in the pull-out direction A and pushed into the furniture body 4. In the fully extended position, the furniture part 6 can be pivoted about a vertical pivot axis from the basic position, as shown in Fig. 3. Items arranged on the shelves 10 are then easier to access. This improves the ease of use of such a tall cabinet pull-out.

[0045] To prevent the tall cabinet pull-out 6 from being accidentally retracted against the extension direction A in a wasted position, it is secured against such retraction when not in its home position. Furthermore, the tall cabinet pull-out 6 is secured in its home position when not in its fully extended position. This prevents incorrect operation and increases ease of use. Securing or releasing the tall cabinet pull-out 6 is achieved by pivoting or pushing in and out the tall cabinet pull-out 6. The tall cabinet 2 is thus easy to operate.

[0046] This is achieved in the furniture pull-out 3 according to the invention by the pull-out guide 16 with the blocking device 30. This is shown in Figures 4-28 in various views and states. In addition to the blocking device 30 of the lower guide 16, also referred to here as the pull-out guide, the furniture pull-out 3 can optionally also have a corresponding device on the upper guide 14. This further improves the securing of the furniture pull-out 3 against accidental insertion from the fully extended position. In addition, the furniture pull-out 3 is more stable in the fully extended position when both the upper guide 14 and the lower guide 16 are secured. In the exemplary embodiment, the pull-out guide 16 has a pull-out rail that can be pulled out in the pull-out direction A and pushed in counter to the pull-out direction A. The pull-out rail is designed as a three-part and synchronized pull-out with three rail segments 18, 20, 22.Two- or multi-part pull-outs can also be used. Synchronization is not absolutely necessary, but advantageous. A first rail segment 22 supports the furniture part 6, which can be pivoted about a vertical axis between a home position, in which it is aligned parallel to an extension direction A of the pull-out guide 16, and a pivoted position opposite the home position. In the exemplary embodiment, this is achieved via a frame holder 24 that supports the frame 8. The frame holder 24 is arranged on the first rail segment 22. A further rail segment 18 is to be fixed to the furniture body 4. The second rail segment 20 connects the first rail segment 22 to the further rail segment 18.

[0047] Fig. 4 shows a top view of the pull-out guide 16 in a fully extended state. The frame holder 24 is in the home position, in which it is aligned parallel to the pull-out direction A. The locking slide 34 is in the release position. Fig. 5 is a sectional view of the pull-out guide according to Fig. 4. Fig. 6 shows the blocking device 30 as a detailed view of Fig. 5. Fig.

[0048] 7 and 8 show corresponding spatial views of the pull-out guide 16. In the fully extended state shown, the locking element 30 has already been actuated by a deactivator 40, which is designed as a stop arranged on the second rail segment 20. The locking element 38 was moved in a horizontal direction relative to the locking slide 34 by the deactivator 40, specifically during the last part of the travel distance with which the pull-out was transferred to the fully extended position. In the embodiment shown, the locking element 38 has a lever, which is gripped by the deactivator 40, which forms a first stop. The base body 32 of the blocking device 30 is provided with ramps in the area of ​​the lever so that the lever is displaced in a vertical direction. The locking element 38 was rotated in the process.In this position, the locking element 38 can interact with another stop of the deactivator 40 to move the locking element 38 into a position when the furniture part 6 is pushed in, in which position it secures the locking slide 34 against displacement. Turning the lever allows the locking element 38 to "dive through" under the other stop of the deactivator 40 when the furniture part 6 is pulled out, and to interact only with the first stop. With the locking element 38 in the position shown in Fig. 6, the locking slide 34 can be moved in the vertical direction. This is achieved by pivoting the frame 8 or the frame holder 24 about the vertical axis. An operating element 36 is arranged on the frame holder 24 and interacts with a guide contour 42 of the locking slide 34. The actuating element 36 and the guide contour 42 of the locking slide engage with each other to form a guide for the controlled movement of the locking slide 34.For this purpose, the guide contour 42 is V-shaped, with the V-shape having widening inlet areas on both sides. In this embodiment, the guide contour 42 forms two adjacent "hills" in the lower area. Fig. 9 to Fig. 13 show the pull-out guide 16 in a slightly retracted position compared to the fully extended position shown in Fig. 4 to Fig. 8. The furniture part 6 or the frame holder 24 is in the home position. The locking slide 34 is still in the release position. In Fig. 11 and partially in Fig. 13, it can be seen that in this position the locking element 38 has been displaced horizontally such that it lies between the base body 32 and the locking slide 34 and thus in the displacement path of the locking slide 34. In this position, the locking slide 34 is secured against displacement.At the same time, the guide contour 42 on the locking slide 34 is designed such that the frame holder 24 is secured in the home position by the actuating element 36 attached thereto, which, in the home position, is arranged in the guide contour 42 of the locking slide 34. The blocking device 30 thus combines the functions of securing the pull-out guide in the fully extended position when the furniture part 6 is pivoted out of the home position, and securing the furniture part 6 in the home position for insertion or removal. Such a pull-out guide 16 is comfortable to handle and can be easily manufactured.

[0049] Fig. 14 to Fig. 19 show the pull-out guide in the position according to Fig. 4 to Fig. 8 in other views. Fig. 16 shows a cross-section through the blocking device 30. In this sectional view, the guide contour 42, which interacts with the actuating element 36, is clearly visible. The sectional view shown in Fig. 17 shows the synchronization of the three rail segments 18, 20, 22. The second rail segment 20 has a synchronizing gear 48 for this purpose. The further rail segment 18 (not shown) and the first rail segment 22 each have racks that interact with the synchronizing gear 48 of the second rail segment 20. The rack 46 of the first rail segment 22 is shown. This makes it easy to synchronize the three-part pull-out.The second rail segment 20 has a stop block 44, which interacts with the locking slide 34 in the locking position to secure the second rail segment 20 and the first rail segment 22 relative to each other. Synchronization via the racks and the synchronizing gear 48 also secures the second rail segment 20 and the first rail segment 22 relative to the further rail segment 18.

[0050] In Figs. 20 to 25, the frame holder 24 is shown slightly pivoted relative to its home position. The pull-out guide 16 is in the fully extended position. The locking element 38 is removed from the locking slide 34 by the deactivator 40. By pivoting the furniture part 6 or the frame holder 24 from its home position, the actuating element 36 arranged on the frame holder 24, which interacts with the guide contour 42 of the locking slide 34, moves the latter into the locked position. In the locked position, the locking slide 34 comes into contact with the stop block 44 arranged on the second rail segment 20. This is shown in Fig. 25. The pull-out guide 16 is thus secured against unintentional backward displacement counter to the extension direction A. Fig. 21 and Fig. 22 show the interaction between the actuating element 36 and the guide contour 42 of the locking slide 34. Fig. 26 to 28 show the pull-out guide 16 when the furniture part 6 orthe frame holder 24 is pivoted further out of the home position. The actuating element 36 is thereby completely removed from the guide contour 42 of the locking slide 34. When the furniture part 6 or the frame holder 24 is pivoted back, they then come into contact again in order to move the locking slide 34 into a position that allows (or releases) the insertion of the furniture part 6 into the body 4 when the furniture part 6 is moved into the home position.

[0051] Fig. 29 a) shows the pull-out guide 16 with the position securing device and the frame holder 24 in the home position. Fig. 29 b) shows a detailed view with broken lines. The positioning disc 26 and the positioning pin 28 can be seen. The positioning disc 28 has a recess with which the positioning pin 28 interacts in the home position. By applying a force, the positioning pin 28 can be moved out of the recess in the positioning disc 26 and the frame holder 24 or the furniture part 6 can be pivoted about the vertical axis. Fig. 30 a) to 31 b) show the frame holder 24 or the furniture part 6 in two different pivot positions, rotated 90° in opposite directions from the home position. The positioning disc 28 has a further recess with which the positioning pin 28 interacts in the two pivot positions. The position securing device thus secures the frame holder 24 orthe furniture part 6 in the basic position or the swivel positions and gives the user of the furniture extension 3 feedback that the furniture part 6 has been swiveled into a certain position.

Claims

Claims for a furniture extension, in particular for a tall cabinet, comprising a furniture part (6) extendable from a furniture carcass, which is mounted on an extension rail (16) so as to be extendable in an extension direction (A) and retractable in the opposite direction (A) and pivotable about a vertical axis in a fully extended position, and comprising a locking device (30) on the extension rail (16) which permits pivoting of the furniture part (6) only in the fully extended position and retraction only in an unpivoted home position, characterized in that the locking device (30) has a locking slide (34) which can be vertically displaced by pivoting the furniture part (6) in its fully extended position such that it blocks retraction of the furniture part (6) outside the home position.Furniture extension according to claim 1, characterized in that the blocking device (30) comprises a locking element (38) which prevents the locking slide (34) from being moved when the furniture part (6) is not fully extended, wherein the locking slide (34) and the furniture part (6) are designed such that pivoting of the furniture part (6) is only possible together with moving the locking slide (34). Furniture extension according to claim 2, characterized in that the locking element (38) blocks the movement of the locking slide (34) when the furniture part (6) is not fully extended, and in particular is arranged at least partially within the movement of the locking slide (34). Furniture extension according to claim 2 or 3, characterized in that the blocking device (30) comprises a deactivator (40) which actuates the locking element (38) when the furniture part (6) is pulled out into the fully extended position, thereby releasing the movement of the locking slide (34). Furniture extension according to claims 3 and 4, characterized in that the deactivator (40) is designed as a stop which removes the locking element (38) from the movement of the locking slide (34) when the furniture part (6) is pulled out into the fully extended position.Furniture extension according to one of the preceding claims, characterized in that the furniture extension comprises a stop block (44) which interacts with the locking slide (34) pushed out by the furniture part (6) pivoted from its home position in the fully extended position, such that insertion of the furniture part (6) against the extension direction (A) is prevented. Furniture extension according to one of the preceding claims, characterized in that the extendable furniture part (6) is equipped with an actuating element (36). is connected to the locking slide (34) in such a way that the actuating element (36) vertically displaces the locking slide (34) when the furniture part (6) is pivoted from its home position, thus blocking the furniture part (6) from being inserted outside its home position. Furniture extension according to claim 7, characterized in that the locking slide (34) has a guide contour (42) which, together with the actuating element (36), forms a cam guide for the controlled displacement of the locking slide (34) when the locking slide (34) and the actuating element (36) are engaged. Furniture extension according to claim 8, characterized in that the guide contour (42) is V-shaped with outwardly widening entry areas for the actuating element (36).Furniture extension according to one of the preceding claims, characterized in that the locking slide (34) is mounted so as to be displaceable downwards in the direction of gravity by its own weight, where it remains until it is lifted again. Furniture extension according to one of the preceding claims including claim 6, characterized in that the extension rail comprises an extension of at least two parts and the stop block (44) is fixed in position relative to the furniture body. Furniture extension according to any one of claims 1 to 10, characterized in that the extension rail comprises a synchronized extension consisting of at least three parts, with at least one first rail segment (22) connected to the furniture part and a second rail segment (20) connecting the first rail segment (22) to a further rail segment (18), wherein the locking slide (34) secures two adjacent rail segments of the extended extension rail against each other. Furniture extension according to claim 6 and claim 12, characterized in that the first rail segment (22) and the second rail segment (20) of the extended extension rail can be secured against each other and the stop block (44) is arranged on the second rail segment (20). Furniture extension according to claim 4 and one of claims 12 or 13, characterized in that the deactivator (40) is arranged on the second rail segment (20).Furniture extension according to one of the preceding claims, characterized in that the extension guide has a position locking device for fixing the extendable furniture part in at least one pivot position. Furniture extension according to claim 15, characterized in that the position locking device comprises a positioning disc (26) arranged on the extension rail, in particular on the first rail segment (22), and a positioning pin (28) arranged on the furniture part (6).