Lever arm for a furniture fitting

Abstract

The invention relates to a lever arm for a furniture fitting for articulatedly connecting a movable furniture part (36) to a furniture body, the lever arm comprising: two telescopic elements (2, 3) which are adjustable relative to one another along a longitudinal axis (L), one of the telescopic elements (2) being designed for articulated connection to a base element (44) of a furniture fitting (35), and another of the telescopic elements (3) being designed for articulated connection to a movable furniture part (36); a plurality of latching recesses (4, 4') which are arranged, so as to be mutually spaced in a longitudinal direction, on a first of the two telescopic elements (2); at least one latching body (5, 5') which is arranged on a second of the two telescopic elements (3) and is adjustable between a latching position, blocking a movement of the telescopic elements (2, 3), and a release position, releasing the telescopic elements (2, 3) for movement; and a blocking element (6) on the second telescopic element (3), said blocking element (6) being adjustable between a blocking setting, in which the blocking element (6) fixes the latching body (5, 5') in the latching position and prevents an adjustment of the latching body (5, 5') from the latching position into the release position, and a release setting, in which the blocking element (6) releases the latching body (5, 5') for adjustment into the release position.

Description

[0001] Lever arm for a furniture fitting

[0002] Description

[0003] The invention relates to a lever arm for a furniture fitting for articulatedly connecting a movable furniture part to a furniture body. The lever arm comprises two telescopic elements adjustable relative to each other along a longitudinal axis, wherein one of the telescopic elements is designed for articulated connection to a base element of a furniture fitting, and wherein another of the telescopic elements is designed for articulated connection to a movable furniture part, several locking recesses arranged at intervals in the longitudinal axis direction on a first of the two telescopic elements, and at least one locking element arranged on a second of the two telescopic elements and adjustable between a locking position that blocks movement of the telescopic elements and a release position that allows movement of the telescopic elements.

[0004] Such lever arms are used, for example, as an element of a furniture fitting, in particular a flap fitting, to adjustably attach movable furniture parts between a closed position and an open position to the body of a piece of furniture.

[0005] WO 2018 / 212724 A1 discloses a control arm for the articulated connection of a flap stay to a flap, folding flap, door, or the like. For adjusting its length, the control arm has at least a first telescopic arm and a second telescopic arm adjustable to it, as well as at least one locking device for fixing the position of the two telescopic elements relative to each other. The control arm is associated with a detent connection acting between the telescopic arms in the direction of its length change. This detent connection has at least two or more detent positions arranged along the length change of the control arm and spaced apart by a detent interval. The present invention is based on the objective of providing a lever arm that enables reliable and flexible length adjustment using simple and cost-effective means.

[0006] The problem is solved by a lever arm for a furniture fitting for articulatedly connecting a movable furniture part to a furniture carcass, comprising two telescopic elements adjustable relative to each other along a longitudinal axis. One of the telescopic elements is designed for articulated connection to a base element of a furniture fitting, and the other telescopic element is designed for articulated connection to a movable furniture part. According to the invention, the lever arm has several detent recesses arranged at intervals along the longitudinal axis on a first of the two telescopic elements and at least one detent element arranged on a second of the two telescopic elements, adjustable between a detent position that blocks movement of the telescopic elements and a release position that allows movement of the telescopic elements.A locking element is adjustably arranged on the second telescopic element between a locking position, in which the locking element fixes the locking body in the locking position and prevents the locking body from being moved from the locking position to the release position, and a release position, in which the locking element releases the locking body for movement into the release position.

[0007] The telescopic elements, adjustable relative to each other, allow for coarse adjustment of the lever arm length in conjunction with the detents and detent recesses. The locking element for securing the detents prevents their movement from the locked to the unlocked position in a simple and reliable manner. This effectively counteracts unwanted movement of the telescopic elements, eliminating the need for additional fixing. As a result, the lever arm has a compact and simple design, reducing manufacturing costs.

[0008] The lever arm comprises a first and a second telescopic element. The second telescopic element is adjustable relative to the first telescopic element along its longitudinal axis. The longitudinal axis refers to the longitudinal axis of the first and / or second telescopic element. The second telescopic element can be guided on the first telescopic element in such a way that it is coaxial with the first. For example, one of the telescopic elements can be slidably mounted within the other telescopic element to adjust the telescopic elements relative to each other.

[0009] The lever arm can preferably be pivotally connected to a base element of a furniture fitting via one of the telescopic elements, in particular the first telescopic element. For example, the first telescopic element can be pivotally connected to the base element of the furniture fitting via a connecting element.

[0010] Preferably, the lever arm can be articulated to the movable furniture part, for example a flap, via the other of the telescopic elements, in particular the second telescopic element. For example, the second telescopic element can be articulated to the flap via a coupling means, for example a coupling element.

[0011] A articulated connection between two elements means that these elements are connected to each other in a way that allows them to be moved arbitrarily, for example, linearly and / or rotationally relative to each other.

[0012] The locking recesses can be formed, for example, as indentations or openings on a side surface of the first telescopic element. Preferably, the locking recesses are arranged at a constant interval between each other. Alternatively, the locking recesses can be arranged randomly distributed along the longitudinal axis. Preferably, the locking recesses can be arranged in a row, i.e., in a line, with the line being particularly preferably parallel to the longitudinal axis. Furthermore, the locking recesses can have, for example, a circular, elliptical, or polygonal inner contour. The locking recesses can also have identical, alternatively, or additionally different inner contours.For example, the locking recesses can mostly have a circular inner contour, with locking recesses having an elliptical inner contour provided at predefinable, periodic intervals to form a scale for reading the length adjustment.

[0013] The locking element can, for example, be formed integrally with the second telescopic element or be detachably connected to the second telescopic element as a separate component. The locking element is preferably designed such that, when moved from the release position to the locking position, it is positively engaged with one of the locking recesses. For example, the locking element has an outer contour adapted to the inner contour of the locking recesses. In this context, "adapted" preferably means that the outer contour of the locking element has an identical or smaller diameter, width, and / or length than the inner contour of a locking recess. In the locking position, the locking element, through a positive engagement with a locking recess, particularly in the direction of the longitudinal axis, prevents the telescopic elements from moving in that direction.In the release position, the locking element and the locking recesses are disengaged, allowing the telescopic elements to be moved relative to each other. Alternatively, two or more locking elements can be provided, spaced at the same interval as the locking recesses along the longitudinal axis.

[0014] The locking element is preferably pivotally mounted, in particular pivotally mounted, on the second telescopic element for adjustment between the locking position and the release position. In the locking position, the locking element secures the detent in the detent position to prevent it from moving from the detent position to the release position. In the release position, the locking element releases the detent to allow it to move from the detent position to the release position.

[0015] To adjust the length of the lever arm, a user can move the locking element from the locked position to the released position. The locking element, which is engaged with a first detent in the locked position, is then moved from the locked position to the released position, allowing the telescopic elements to be shifted relative to each other. As soon as the locking element reaches a second, third, or nth detent located at a distance from the first detent, it is moved from the released position to the locked position. To lock the locking element in the second, third, or nth detent, the locking element is moved from the released position to the locked position.

[0016] In a possible further development, the locking element can be pivotally mounted on the second telescopic element about a pivot axis arranged transversely to the longitudinal axis. The pivot axis can, for example, be arranged at an angle of 1° to 90° to the longitudinal axis. The locking element can be mounted on the second telescopic element in a bearing element, in particular a bearing opening, or alternatively or additionally in a rolling or sliding bearing. Preferably, the locking element is arranged in the area of ​​the detent body. By pivotally mounting the locking element about the pivot axis, it can be easily and quickly adjusted or pivoted between the locking position and the release position.

[0017] In a possible further development, the lever arm can have a locking device arranged on the second telescopic element and / or the locking element for fixing the locking element in the locked position, thereby preventing unwanted movement of the locking element from the locked position to the released position. To fix the locking element in the locked position, the locking device is preferably adjustable between a locking position associated with the locked position and an unlocking position associated with the released position. The locking device can, for example, be designed such that the locking element is positively connected to the first and / or second telescopic element in the locked position.

[0018] Preferably, the locking device is designed such that it moves from the locked position to the unlocked position after a minimum force is applied to the locking element. For example, the locking device is designed to be moved between the locked and unlocked positions by manual actuation of the locking element. The locking device may, for example, have a projection on the locking element and a groove on the first or second telescopic element for receiving the projection in the locked position. Alternatively or additionally, the locking device is designed such that the locking element is secured to the second telescopic element in the locked position by friction.The locking mechanism ensures that the blocking element cannot be moved between the locked and unlocked positions without user intervention. This increases the safety of the lever arm against unwanted movement of the telescopic elements relative to each other.

[0019] According to one possible embodiment, the telescopic elements can be designed such that at least one detent element is moved from the detent position to the release position by adjusting the telescopic elements relative to each other. For example, when the second telescopic element is moved relative to the first, contact with the detent element can cause it to move from the detent position to the release position. Alternatively or additionally, the second telescopic element can have an actuating element for moving the detent element between the detent position and the release position. By making the detent element movable by adjusting the telescopic elements, the length adjustment of the telescopic elements can be further simplified.

[0020] Preferably, the second telescopic element can have a hollow profile, and the locking element can be formed as a projection extending from an inner wall of the hollow profile. This eliminates the need for a separate locking element and further simplifies the design of the lever arm. The hollow profile can have a wall extending along the longitudinal axis with a cross-section, for example, polygonal or rectangular, arranged perpendicular to the longitudinal axis. The wall of the second telescopic element can be bounded radially to the longitudinal axis, for example, by an inner wall and an outer wall.

[0021] Preferably, the hollow profile of the second telescopic element is formed from a bent sheet metal part. At the joint where the bent ends of the sheet metal part meet, the bent ends can be joined together, for example, by material interlocking and / or positive locking. For example, the bent ends each have interlocking serrated contour sections for positive locking.

[0022] The locking element can be arranged on a side of the hollow profile of the second telescopic element facing away from the locking recesses and / or the locking body. In particular, the locking element can be arranged on the outer wall of the second telescopic element. Preferably, the bearing element is formed as an opening penetrating the wall of the second telescopic element from the outer wall to the inner wall, in order to pivot the locking element along the outer wall about the pivot axis between the locking position and the release position.

[0023] In one possible embodiment, the detent element can be pre-tensioned in the release position towards the detent position, in particular by spring tension. This pre-tensioning, especially spring tension, of the detent element towards the detent position enables easy and reliable adjustment of the detent element from the release position to the detent position as soon as the detent element is aligned with a detent recess.

[0024] The locking element can preferably be arranged on a tab formed in the wall of the hollow profile. Preferably, the locking element is pre-tensioned to the locking position by the tab in the release position. The tab is formed, for example, by a recess penetrating the wall of the hollow profile from the outer wall to the inner wall. The recess can, for example, be U-shaped. The second telescopic element, in particular the hollow profile or the sheet metal part, is preferably made of an elastic material. In this context, elastic means that the material springs back to its original shape after a small adjustment travel.When adjusting the second telescopic element along its longitudinal axis relative to the first, the tab can bend out of the hollow profile wall when the locking element is in the release position, thus moving the locking element from the locking position to the release position. If the locking element is in the locked position, the tab cannot bend. By generating the preload of the locking element via the tab formed in the hollow profile wall, a particularly simple and compact lever arm design can be achieved.

[0025] According to a possible embodiment, the first telescopic element can have several first locking recesses spaced apart from one another on a first side surface in the longitudinal direction, and several second locking recesses spaced apart from one another on a second side surface in the longitudinal direction. The second telescopic element can have at least one first locking element associated with the first locking recesses and at least one second locking element associated with the second locking recesses. The first telescopic element preferably comprises a rod section with the two side surfaces. The rod section can have a polygonal, in particular rectangular, cross-section perpendicular to the longitudinal axis. The first side surface can be arranged parallel to the second side surface at a distance equal to the thickness of the rod section.

[0026] The first and second locking recesses can be arranged symmetrically about a plane of symmetry located along the longitudinal axis and, in particular, parallel to the two side surfaces. The hollow profile of the second telescopic element can preferably have two congruent tabs. The first and second locking bodies can each preferably be formed by one of the tabs. The locking element can particularly preferably be formed as a U-profile to simultaneously prevent the adjustment of the first and second locking bodies in the locked position. The U-shaped locking element can have a U-shaped cross-section, which, in particular, is arranged perpendicular to the longitudinal axis in the locked position to prevent bending of both tabs.Because the first telescopic element has locking recesses on both sides, and the second telescopic element has corresponding locking elements on each of these recesses, the two telescopic elements are securely locked in place by the locking elements when in the locked position. The U-shaped locking element allows for simple and reliable locking of the locking elements located on the tabs on both sides of the hollow profile. The coarse adjustment of the lever arm length using the telescopic elements, locking elements, and locking recesses is generally sufficient to flexibly adapt the lever arm to different furniture components.According to a possible further development, the lever arm can have a coupling element for articulately connecting one of the telescopic elements to the movable furniture part or the base element of the furniture fitting, and an adjustment unit that changes the distance between the coupling element and the other telescopic element along its longitudinal axis. For articulated connection to the movable furniture part, the coupling element can have a connecting section, for example, in the form of an opening for a connecting rod. The adjustment unit is preferably designed such that the coupling element can be adjusted relative to the other telescopic element by actuating the adjustment unit. For example, the coupling element can be arranged on the second telescopic element. The coupling element and the adjustment unit enable simple and quick fine adjustment of the lever arm's length, thus making the lever arm even more versatile.

[0027] The adjustment unit can comprise a threaded spindle fixed to a profile section of the second telescopic element and a threaded nut rotatably mounted on the threaded spindle and fixed to the coupling element. The threaded spindle can be arranged coaxially to the longitudinal axis of the telescopic elements. The threaded spindle can be positively connected to the profile section of the second telescopic element. For example, the threaded spindle has a shaped section that is arranged in a recess located at one end of the profile section of the second telescopic element. The shaped section and the recess preferably form a positive connection in and radial to the longitudinal axis to secure the threaded spindle against displacement along the longitudinal axis and against rotation about the longitudinal axis.Preferably, the threaded nut can be mounted on the coupling element in such a way that the threaded nut can be turned by a user on the threaded spindle in order to adjust the coupling element axially along the longitudinal axis relative to the telescopic elements together with the threaded nut.

[0028] The coupling element preferably comprises a housing, wherein the threaded spindle of the adjusting unit is arranged in the housing and the threaded nut of the adjusting unit is mounted on the housing. The housing preferably has an opening for mounting the threaded nut. Furthermore, the housing of the coupling element can be made of, for example, plastic. Preferably, the housing is formed as an injection-molded component. In addition, the housing can be formed from two interconnectable housing halves. It is also conceivable that the housing is formed in one piece if it has an opening for arranging the adjusting unit within the housing. The housing can have several rib structures for reinforcement.

[0029] The invention further relates to a furniture fitting, in particular a flap fitting, with a lever arm as described above, which is pivotably attached to a base element about an adjusting axis between an open position and a closed position, and with a force storage device for applying force to the lever arm when it is moved from the closed position to the open position. The force storage device can, for example, be designed as a spring element. The base element preferably has an extension in both the vertical and horizontal directions that corresponds to a multiple of the thickness of the base element.

[0030] Furthermore, the invention relates to a piece of furniture comprising a movable furniture part and a furniture fitting articulated to the furniture part. The furniture can, for example, be a wall cabinet for the kitchen. The furniture part can, for example, be a flap, in particular a folding flap with a lower and an upper flap element. The furniture fitting, in particular the flap fitting, can be connected to the base element on a wall element of the furniture, for example, a side panel.

[0031] A user can use the coarse and fine adjustment of the lever arm to adapt the length of the lever arm to the furniture so that the movable furniture part closes flush with the furniture in the closed position.

[0032] An embodiment of the invention is explained below with reference to the drawings. The drawings show, in schematic representation: Figure 1 is a side view of a lever arm according to the invention with a locking element arranged in a locking position,

[0033] Figure 2 shows a side view of the lever arm of Figure 1 with the blocking element arranged in a release position and a detent element arranged in a release position.

[0034] Figure 3 shows a side view of the lever arm from Figures 1 to 2 with the locking element arranged in the release position and the detent body arranged in a detent position.

[0035] Figure 4 shows a cross-section through the lever arm of Figures 1 to 3 with the detent element arranged in the detent position,

[0036] Figure 5 shows a section of a longitudinal section through the lever arm of Figures 1 to 4 with the locking element arranged in the blocking position and the detent body arranged in the detent position.

[0037] Figure 6 shows a section of another longitudinal section through the lever arm of Figures 1 to 5 with an adjusting unit,

[0038] Figure 7 shows a section of the longitudinal section through the lever arm of Figure 6 with the adjusted adjustment unit and

[0039] Figure 8 is a perspective view of a piece of furniture with a movable furniture part and a furniture fitting with the lever arm of Figures 1 to 7.

[0040] Figure 1 shows a lever arm 1 with a first telescopic element 2 and a second telescopic element 3 adjustable relative to the first telescopic element 2 along a longitudinal axis L. The lever arm 1 further has several detent recesses 4, 4' arranged at intervals along the longitudinal axis on the first telescopic element 2 and several detent bodies 5, 5' arranged on the second telescopic element 3. The detent bodies 5, 5' are adjustable between a detent position, shown in Figures 1 and 3 to 5, which blocks any movement of the telescopic elements 2, 3, and a release position, shown in Figure 2, which releases the telescopic elements 2, 3 for movement. In the detent position, the detent bodies 5, 5' block the movement of the telescopic elements 2, 3 by means of a positive engagement with the detent recesses 4, 4' in the direction of the longitudinal axis L.In the release position, the locking elements 5, 5' and the locking recesses 4, 4' are disengaged, so that the telescopic elements 2, 3 can be moved relative to each other.

[0041] On the second telescopic element 3, a locking element 6 is adjustably arranged between a locking position which fixes the locking bodies 5, 5' in the locking position, as shown in Figures 1 and 5, and a release position which releases the locking bodies 5, 5' for adjustment into the release position, as shown in Figures 2 and 4.

[0042] As shown in Figure 5, the lever arm 1 can have a locking means 7 arranged on the second telescopic element 3 and the locking element 6 for fixing the locking element 6 in the locked position. The locking means 7 is adjustable between a locking position associated with the locking position and an unlocking position associated with the release position. The locking means 7 has a projection arranged on the locking element 6 (not shown) and a groove 8 arranged on the second telescopic element 3 for positively engaging the projection in the locked position.

[0043] The first telescopic element 2 has a rod section 9 with a first side surface 10 and a second side surface 11 arranged parallel to it at a distance equal to the thickness of the rod section 9.

[0044] The second telescopic element 3 is configured such that the locking elements 5, 5' are moved from the locking position to the release position by adjusting the telescopic elements 2, 3. Furthermore, the second telescopic element 3 has a hollow profile 12 in which the first telescopic element 2 is movably guided. The locking elements 5, 5' are each formed as a projection extending from an inner wall 15 of the hollow profile 12. The hollow profile 12 has a wall 14 extending in the direction of the longitudinal axis L, with a rectangular cross-section Q arranged perpendicular to the longitudinal axis L. Furthermore, wall 14 of the second telescopic element 3 is bounded radially to the longitudinal axis L by the inner wall 15 and an outer wall 16.

[0045] The hollow profile 12 of the second telescopic element 3 is formed from a bent sheet metal part. At a joint 18 where the bent ends 17 of the sheet metal part meet, the bent ends 17 can be joined together, for example, by material interlocking and / or form-fitting. For example, the bent ends 17 each have interlocking serrated contour sections 19 for form-fitting connection.

[0046] On the first side surface 10 of the first telescopic element 2, several first locking recesses 4 are arranged, and on the second side surface 11 of the first telescopic element 2, several second locking recesses 4' are arranged. The first locking recesses 4 and the second locking recesses 4' can be arranged symmetrically about a plane of symmetry SE located in the longitudinal axis L and, in particular, parallel to the two side surfaces 10, 11. The locking recesses 4, 4' are formed as openings on the side surfaces 10, 11 of the first telescopic element 2 and are arranged at a constant interval from each other in a row, i.e., on a line parallel to the longitudinal axis L. Furthermore, the locking recesses 4, 4' have, for example, a circular inner contour 20.

[0047] On the second telescopic element 3, two first locking elements 5, corresponding to the first locking recesses 4, and two second locking elements 5', corresponding to the second locking recesses 4', are arranged. The hollow profile 12 of the second telescopic element 3 has two congruently arranged tabs 21. The first and second locking elements 5, 5' are formed on the tabs 21. The locking elements 5, 5' are each pre-tensioned by the tabs 21 in the release position in the direction of the locking position. The tabs 21 are each formed by a recess 22 penetrating the wall 14 of the hollow profile 12 from the outer wall 16 to the inner wall 15. Here, the recess 22 is, for example, U-shaped. The locking elements 5, 5' are formed integrally with the second telescopic element 3 and have an outer contour 23 adapted to the inner contour 20 of the locking recesses 4, 4'.The term "adapted" means that the outer contour 23 of the detent bodies 5, 5' has a smaller diameter than the inner contour 20 of the detent recesses 4, 4'.

[0048] The locking element 6 is arranged on a side of the hollow profile 12 of the second telescopic element 3 facing away from the locking recesses 4, 4' and / or the locking bodies 5, 5' and is pivotably mounted on the second telescopic element 3 about a pivot axis S arranged transversely to the longitudinal axis L. The pivot axis S can be arranged, for example, at an angle of 1° to 90°, here for example 90° to the longitudinal axis L. The locking element 6 is mounted in a bearing element 24, here for example in the form of a bearing opening on the second telescopic element 3. Here, the locking element 6 is formed, for example, as a U-profile.

[0049] The lever arm 1 further comprises a coupling element 25 and an adjusting unit 26 which adjusts the distance between the coupling element 25 and the first telescopic element 2 along the longitudinal axis L (see Figures 6 and 7). The coupling element 25 has a connecting section 27, for example in the form of an opening for a connecting rod.

[0050] The adjustment unit 26 comprises a threaded spindle 28 fixedly arranged on a profile section 13 of the second telescopic element 3, and a threaded nut 29 rotatably arranged on the threaded spindle 28 and fixedly mounted on the coupling element 25. The threaded spindle 28 is arranged coaxially to the longitudinal axis L of the telescopic elements 2, 3 and positively connected to the profile section 13 of the second telescopic element 3. For this purpose, the threaded spindle 28 has a shaped section 30 which is arranged in a recess 31 located at one end of the profile section 13 of the second telescopic element 3. The shaped section 30 and the recess 31 preferably form a positive connection in and radially to the longitudinal axis L in order to secure the threaded spindle 28 against displacement along the longitudinal axis L and against rotation about the longitudinal axis L.

[0051] Furthermore, the coupling element 25 has a housing 32 in which the threaded spindle 28 of the adjusting unit 26 is arranged and on which the threaded nut 29 of the adjusting unit 26 is mounted. The housing 32 can have several rib structures 33 for reinforcement. Figure 8 shows a piece of furniture 34 with a furniture fitting 35, here for example a flap fitting, with a flap 36 in an open position. The piece of furniture 34 comprises a side wall 37 and a top panel 38, which together with a bottom panel, a back panel, and another side wall, none of which are shown, define an interior space 39 of the piece of furniture 34. The interior space 39 of the piece of furniture 34 is accessible via an opening 40. The opening 40 is closed by the flap 36, which is pivotally connected to the top panel 38 of the piece of furniture 34 at one upper end by a hinge (not shown).In the present case, the flap 36 comprises a lower flap element 41 and an upper flap element 42, which are connected to each other via a further hinge not shown.

[0052] A fitting element 43 is rigidly connected to the lower flap element 42. The fitting element 43 serves as a connecting element between the flap 36 and the furniture fitting 35. The furniture fitting 35 comprises the lever arm 1, which is rotatably connected at one end to the fitting element 43 via the coupling element 25 and at the opposite end to a base element 44 of the furniture fitting 35 about an actuating axis S1. The base element 44 has an extension in both the vertical and horizontal directions that corresponds to a multiple of the thickness of the base element 44. The base element 44 can be connected to the side wall 37 via fastening elements (not shown). A force storage device (not shown), for example a spring element, is arranged in the base element.

[0053] A user can adjust the length of the lever arm 1 by means of a coarse and fine adjustment so that the flap 36 rests against the side wall 37 and the underside in the closed position.

[0054] To roughly adjust the length of the lever arm 1, the locking element 6 is first moved from the locking position to the release position. Then, the locking elements 5, 5', which are engaged with the detent recesses 4, 4' in the detent position, are moved from the detent position to the release position by the spring-loaded tabs 21 and by adjusting the second telescopic element 3 relative to the first telescopic element 2. Once the desired length of the lever arm 1 is reached, the detent elements 5, 5' are moved from the release position to the detent position by the preload of the tabs 21. To lock the detent elements 5, 5' in the detent recesses 4, 4', the locking element 6 is moved from the release position to the locking position. The locking device 7 secures the locking element 6 against unintentional movement in the locking position.

[0055] To fine-tune the length of the lever arm 1, the threaded nut 29 of the adjusting unit 26 is turned. By fixing the threaded spindle 28 to the profile section 13 of the second telescopic element 3 and mounting the threaded nut 29 in the housing 32, the coupling element 25 is adjusted relative to the first telescopic element 2 along the longitudinal axis L.

[0056] The locking element 6 for securing the locking elements 5, 5' enables a simple and reliable method of preventing the locking elements 5, 5' from moving from the locking position to the release position. This effectively counteracts unwanted movement of the telescopic elements 2, 3, eliminating the need for additional fixing of the telescopic elements 2, 3.

[0057] List of reference symbols

[0058] 1 Lever arm

[0059] 2 first telescopic element

[0060] 3 second telescopic element

[0061] 4.4' rest recess

[0062] 5, 5' Raster body

[0063] 6 Blocking element (U-profile)

[0064] 7 Locking devices

[0065] 8 Nut

[0066] 9 Staff Section

[0067] 10 first side surface

[0068] 11 second side surface

[0069] 12 Hollow profile

[0070] 13 Profile section

[0071] 14 Wall

[0072] 15 Interior wall

[0073] 16 Exterior wall

[0074] 17 Bending ends

[0075] 18 liaison point

[0076] 19 Contour section

[0077] 20 Inner contour

[0078] 21 tab

[0079] 22 Exclusion

[0080] 23 Outer contour

[0081] 24 Bearing element (bearing opening)

[0082] 25 coupling element

[0083] 26 Adjustment unit

[0084] 27 Connection section 8 Threaded spindle 9 Threaded nut 0 Form section 1 Recess 2 Housing 3 Rib structures 4 Furniture 5 Furniture fitting (flap fitting)

[0085] 36 flap

[0086] 37 Side wall

[0087] 38 Topsoil

[0088] 39 Interior

[0089] 40 Opening the furniture

[0090] 41 lower flap element

[0091] 42 upper flap element

[0092] 43 Fitting element

[0093] 44 Basic element

[0094] L Longitudinal axis

[0095] Q Cross-section of the hollow profile

[0096] S swivel axis

[0097] S1 actuator

[0098] SE symmetry plane

Claims

Lever arm for a furniture fitting Claims 1. Lever arm for a furniture fitting for articulatedly connecting a movable furniture part (36) to a furniture carcass, comprising two telescopic elements (2, 3) adjustable relative to each other along a longitudinal axis (L), wherein one of the telescopic elements (2, 3) is designed for articulated connection to a base element (44) of a furniture fitting (35), and wherein another of the telescopic elements (2, 3) is designed for articulated connection to a movable furniture part (36), several locking recesses (4, 4') arranged at intervals in the longitudinal axis direction on a first of the two telescopic elements (2), and at least one locking element (5, 5') arranged on a second of the two telescopic elements (3) and adjustable between a locking position that blocks displacement of the telescopic elements (2, 3) and a release position that releases the telescopic elements (2, 3) for displacement, characterized in thatthat a locking element (6) is adjustably arranged on the second telescopic element (3) between a locking position, in which the locking element (6) secures the detent body (5, 5') in the detent position and prevents the detent body (5, 5') from moving from the detent position to the release position, and a release position, in which the locking element (6) releases the detent body (5, 5') for movement into the release position.

2. Lever arm according to claim 1, characterized in that the locking element (6) is pivotably mounted on the second telescopic element (3) about a pivot axis (S) arranged transversely to the longitudinal axis (L).

3. Lever arm according to claim 1 or 2, characterized by a locking means (7) arranged on the second telescopic element (3) for fixing the locking element (6) in the locking position.

4. Lever arm according to one of claims 1 to 3, characterized in that the telescopic elements (2, 3) are formed such that the at least one locking element (5, 5') is moved from the locking position to the release position by adjusting the telescopic elements (2, 3) relative to each other.

5. Lever arm according to one of claims 1 to 4, characterized in that the second telescopic element (3) has a hollow profile (12) and the locking element (5, 5') is formed as a projection extending from an inner wall (15) of the hollow profile (12).

6. Lever arm according to claim 5, characterized in that the locking element (6) is arranged on a side (16) of the hollow profile (12) of the second telescopic element (3) facing away from the detent recesses (4, 4') and / or the detent body (5, 5').

7. Lever arm according to one of claims 5 or 6, characterized in that the locking element (5, 5') is arranged on a tab (21) formed in a wall (14) of the hollow profile (12).

8. Lever arm according to one of claims 1 to 7, characterized in that the detent element (5, 5') is pre-tensioned in the release position in the direction of the detent position, in particular spring-pre-tensioned.

9. Lever arm according to one of claims 1 to 8, characterized in that the first telescopic element (2) has several first locking recesses (4) arranged at intervals from one another on a first side surface (10) in the longitudinal axis direction and several second locking recesses (4') arranged at intervals from one another on a second side surface (11) in the longitudinal axis direction and that the second telescopic element (3) has at least one first locking element (5) associated with the first locking recesses (4) and at least one second locking element (5') associated with the second locking recesses (4').

10. Lever arm according to one of claims 1 to 9, characterized in that the locking element (6) is formed as a U-profile.

11. Lever arm according to one of claims 1 to 10, characterized by a coupling element (25) for articulately connecting one of the telescopic elements (2, 3) to the movable furniture part (36) or the base element (44) of the furniture fitting (35) and an adjusting unit (26) that adjusts the coupling element (25) along the longitudinal axis (L) relative to the other of the telescopic elements (2, 3) in a manner changing the distance.

12. Lever arm according to claim 11, characterized in that the adjusting unit (26) comprises a threaded spindle (28) fixedly arranged on a profile section (13) of the telescopic element (3) coupled to the adjusting unit (26), and a threaded nut rotatably arranged on the threaded spindle (28) and fixedly mounted on the coupling element (25). (29) shows.

13. Lever arm according to one of claims 11 or 12, characterized in that the coupling element (25) has a housing (32), wherein the threaded spindle (28) of the adjusting unit (26) is arranged in the housing (32) and the threaded nut (29) of the adjusting unit (26) is mounted on the housing (32).

14. Furniture fitting with a lever arm (1 ) according to one of claims 1 to 13, which is pivotably attached to a base element () about an adjusting axis (S1 ) between an open position and a closed position and a force storage device for applying force to the lever arm (1 ) when moving from the closed position to the open position.

15. Furniture comprising a movable furniture part (36) and a furniture fitting (35) articulated to the furniture part (36) according to claim 14.

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