The present invention relates to a furniture drive for moving a movably-supported furniture part, the furniture drive comprising: a carrier configured to be fixed to a furniture carcass,
Moreover, the invention relates to an arrangement comprising two furniture drives of the type to be described, the first furniture drive being configured to be fixed to a first sidewall of the furniture carcass and the second furniture drive being configured to be fixed to a second sidewall of the furniture carcass, the second sidewall opposing the first sidewall, and a pivotal movement of the at least one actuating arm of the first furniture drive can be synchronized with a movement of the at least one actuating arm of the second furniture drive by the synchronization shaft.
WO 2006/113953 A1 discloses an item of furniture with a furniture carcass, and two furniture drives are fixed to opposing sidewalls of the furniture carcass. Each of the furniture drives includes a rotatable member configured to be connected in a movement-coupled manner to an actuating arm for moving a furniture flap. By a synchronization rod, a pivotal movement of the rotatable members of the furniture drives can be synchronized with one another. As a result, the furniture flap can be uniformly elevated and lowered by the two furniture drives, without being tilted thereby. The synchronization rod can also be connected to the rotatable members when the two furniture drives have already been pre-mounted to the furniture carcass. A drawback of this construction is the fact that the synchronization rod, in a mounted condition, can impede the storing and removal of storage goods into and from the furniture carcass. Moreover, the synchronization rod, in a mounted condition, is located adjacent to a front face of the furniture carcass, which can be visually disturbing.
CN 106639718 A discloses an item of furniture with a furniture flap which can be driven relative to the furniture carcass by two furniture drives arranged on the furniture carcass. Each of the furniture drives includes a pivotable actuating arm for moving the furniture flap. For synchronizing a pivotal movement of the two actuating arms, a synchronization rod is provided. In a mounted condition, the synchronization rod is connected on both sides with a pivotable synchronization element of the furniture drives. The pivoting axis of the synchronization rod is arranged laterally offset to the pivoting axes of the actuating arms. A drawback of this construction is the fact that the synchronization rod, in a mounted condition, considerably impedes the storage and removal of storage goods into or from the furniture carcass.
It is an object of the present invention to propose a furniture drive mentioned in the introductory part, thereby avoiding the above-discussed drawbacks.
This is accomplished by the features as recited in claim 1. Further advantageous embodiments of the present invention are defined in the dependent claims.
According to the invention, it is provided that the carrier has at least one upper side which, in a mounted condition of the furniture drive on the furniture carcass, is facing towards a top panel of the furniture carcass, and the first pivoting axis has a larger perpendicular distance to the at least one upper side than the second pivoting axis.
In other words, the first pivoting axis of the actuating arm and the second pivoting axis of the pivotable component configured to be connected to the synchronization shaft are arranged offset relative to one another.
In this way, several constructive advantages can be provided. For example, the pivotable component, in mounted condition of the furniture drive on the furniture carcass, can be arranged on a position as high as possible within the furniture carcass. As a result, the synchronization shaft coupled to the pivotable component does hardly impede the storage and removal of storage items.
Thereby, it can be provided that the carrier includes at least one front face through which the at least one actuating arm at least partially projects in at least one relative position corresponding to an open position of the movable furniture part, and the first pivoting axis has a smaller perpendicular distance to the at least one front face than the second pivoting axis.
Moreover, it can be provided that the pivotable component, in a mounted condition of the furniture drive on the furniture carcass, is arranged on a position as deep as possible in a direction extending in the depth of the furniture carcass, and the synchronization shaft coupled to the pivotable component—also due to a shadowing caused by the furniture carcass—barely appears from a visual point of view.
According to an embodiment, it can be provided that at least one coupling device is provided, the at least one coupling device being configured to couple a pivoting movement of the at least one actuating arm to a pivoting movement of the at least one pivotable component of the interface. The coupling device can include, for example, co-operating tooth arrangements and/or at least one cable pulley.
The at least one coupling device can include at least one tooth arrangement, and the at least one tooth arrangement includes at least one tooth segment.
Further details and advantages of the present invention result from the following description of figures.
The furniture drive 4 includes a, preferably substantially cuboidal, carrier 9 configured to be fixed to the furniture carcass 2. At least one lever 5a of the actuating arm 5 is pivotally supported about a first pivoting axis 7a on the carrier 9. In contrast, the synchronization shaft 6 is rotatably supported about a second pivoting axis 7b, and the first pivoting axis 7a of the lever 5a and the second pivoting axis 7b of the synchronization shaft 6 are arranged laterally offset to one another, preferably mutually spaced from each other in a parallel relationship.
The offset arrangement between the first pivoting axis 7a of the lever 5a of the actuating arm 5 and the second pivoting axis 7b of the synchronization shaft 6 has the particular advantage that the synchronization shaft 6 can be arranged, for example, on a high location within the furniture carcass 2, that is to say close to a top panel 2a of the furniture carcass 2.
Further, it can be provided that the second pivoting axis 7b, in a mounted condition of the furniture drive 4, can be arranged deeper in a direction extending in the depth of the furniture carcass 2, compared with a known coaxial arrangement between the first pivoting axis 7a and the second pivoting axis 7b.
The lever 5a of the actuating arm 5 includes a fitting portion 8 configured to be releasably connected to a fitting body (not shown) to be arranged on the furniture part 3. The fitting portion 8 can be hingedly connected to the lever 5a of the actuating arm 5, and can be configured such that the fitting portion 8 is connectable to the fitting body to be fixed to the furniture part 3 without the use of a tool.
In the shown embodiment, the first lever 5a is pivotally supported about a first pivoting axis 7a and the other lever 5b is pivotally supported about a further pivoting axis 10.
The carrier 9 has at least one upper side 31 which, in a mounted condition of the furniture drive 4 on the furniture carcass 2, faces towards the top panel 2a of the furniture carcass 2, and the first pivoting axis 7a has a larger perpendicular distance to the at least one upper side 31 than the second pivoting axis 7b (
The furniture drive 4 includes an interface 21 for fixing the synchronization shaft 6 by which a pivotal movement of the at least one actuating arm 5 can be synchronized with a pivotal movement of the at least one actuating arm 5 of at least one further furniture drive 4.
The interface 21 includes a component 11 pivotally supported about the second pivoting axis 7b, the component 11 being configured to be releasably connected to the synchronization shaft 6. It can be seen that the first pivoting axis 7a of the lever 5a and the second pivoting axis 7b of the component 11 are mutually spaced from one another in a parallel relationship.
The component 11 pivotable about the second pivoting axis 7b includes a receiving device 11a for receiving the synchronization shaft 6. Preferably, it can be provided that the receiving device 11a includes a non-circular cross-section for receiving the synchronization shaft 6. It can be particularly preferred that the synchronization shaft 6 can be connected to the receiving device 11 a only in one single pivoting position within a pivoting angle range of 360°.
The synchronization shaft 6 includes a shaft journal 6a, and an outer contour of the shaft journal 6a substantially corresponds to an inner contour of the receiving device 11a. In this way, a form-locking connection for transmitting a torque between the pivotable component 11a and the synchronization shaft 6a can be established.
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The first furniture drive 4 is to be fixed to a first sidewall of the furniture carcass 2 and the second furniture drive 4 is to be fixed to a second sidewall of the furniture carcass 2, the second sidewall opposing the first sidewall.
In a mounted condition, the synchronization shaft 6 is connected in a torque-proof manner to the two pivotably-supported components 11 of the furniture drives 4, and a pivotal movement of the at least one actuating arm 5 of the first furniture drive 4 can be synchronized with a pivotal movement of at least one actuating arm 5 of the second furniture drive 4 by virtue of the synchronization shaft 6.
A connecting portion 6f can be connected to a first end portion of the central shaft journal 6g, and the connecting portion 6f is configured to receive a spring element 6d. The shaft journal 6a is arranged on a portion 6c configured to be pressurized by the spring element 6d. The shaft journal 6a, in a mounted condition of the synchronization shaft 6, is pressed against the pivotable component 11 by the spring element 6d.
By a limiting element 6e, it can be prevented that the portion 6c can be detached from the connecting portion 6f. By a, preferably sleeve-shaped, cover 6b, at least the shaft journal 6a can be covered.
On the second end of the synchronization shaft 6, it can be preferably provided that there is no spring element 6d present. Here, a form-locking connection is provided on a connecting portion 6h, the form-locking connection being provided to connect the synchronization shaft 6 to the pivotable component 11 of the opposing furniture drive 4 in a form-locking manner, and a displaceable cover 6i is also provided.
By a transmission mechanism 17, a force which can be stored in the force storage member 12 can be transmitted to the actuating arm 5, preferably wherein the transmission mechanism 17
The interface 21 includes the component 11 rotatable about the pivoting axis 7b, the rotatable component 11 being provided with a receiving device 11a configured to releasably receive the synchronization shaft 6.
The furniture drive 4 includes at least one coupling device 18 configured to couple a pivoting movement of the at least one actuating arm 5 with a pivoting movement of the at least one component 11 of the interface 21. It can be seen that the pivoting axis 7a of the actuating arm 5 and the pivoting axis 7b of the pivotable component 11 are arranged offset relative to one another.
According to an embodiment, it can be provided that the at least one coupling device 18 includes an eccentric transmission.
The coupling device 18 can include at least one tooth arrangement 19, 20. Preferably, the at least one tooth arrangement 19, 20 includes at least one tooth segment 19a, 20a (
According to an embodiment, it can be provided that the at least one tooth arrangement 19, 20 includes at least two tooth segments 19a, 20a, wherein one of the two tooth segments 19a is connected or is configured to be connected to the at least one actuating arm 5, and the other of the two tooth segments 20a is connected or is configured to be connected to the interface 21, and/or at least two tooth segments 19a, 20a bear in layers against one another in a direction extending in the first or second pivoting axis 7a, 7b.
In the shown figure, the at least two tooth segments 19a, 20a bear in layers against one another in a direction extending in the first or second pivoting axis 7a, 7b. One of the at least two tooth segments 19a, 20a consists of a first material and the other of the tooth segments 19a, 20a consists of a second material, the second material having a lower hardness than the first material. Preferably, the first material is steel and/or the second material is plastic.
According to a preferred embodiment of the invention, it can be provided that at least two tooth segments 20a, 20b bear in layers against one another in a direction extending in the first or second pivoting axis 7a, 7b. One of the at least two tooth segments 20a, 20b protrudes over the other of the tooth segments 20a in a radial direction relative to the first or second pivoting axis 7a, 7b.
In
The tooth arrangement 20 is arranged on the pivoting axis 7b of the pivotable component 11, the tooth arrangement 20 including a plurality of tooth segments 20a bearing against one another. The tooth segments 20a are substantially disc-shaped and are arranged on the pivoting axis 7b of the pivotable component 11 via spacer members 22.
The other tooth arrangement 19, on the contrary, is arranged on the first pivoting axis 7a of the actuating arm 5.
According to an embodiment, it can be provided that the at least one tooth arrangement 19 includes at least one tooth segment 19a. At least one pre-stressing element 23 is provided, and at least one tooth segment 19a can be urged in a radial direction relative to the first or second pivoting axis 7a, 7b by the at least one pre-stressing element 23, preferably wherein
In
At least one of the outer tooth segments 19a can have a guide 26 for movably supporting a central tooth segment 19a.
For example, it can be provided that the at least one central tooth segment 19a, 20a projects over the two outer tooth segments 19a, 20a between 0.01 mm and 0.1 mm, preferably between 0.03 mm and 0.07 mm.
At least one tooth arrangement 19, 20 can include a connection device 27 configured to releasably connect a lever 5a, 5b of the actuating arm 5. The connection device 27 can include, for example, at least one recess 27a for partially receiving a lever 5a, 5b of the actuating arm 5.
By an unlocking element 24 pre-stressed by a spring 25, a lever 5a, 5b of the actuating arm 5 can be unlocked from a connected condition with the carrier 9, preferably from a connected condition with a tooth arrangement 19, 20. In this way, the actuating arm 5 can be separated from the carrier 9. Upon an actuation of the unlocking element 24 against a force of the spring 25, the locking between the actuating arm 5 and the tooth arrangement 19, 20 can be released.
The lever 5a is to be hung into a first locking element arranged on the first pivoting axis 7a via a first notch 28a. Upon inserting the lever 5a into the recess 27a, a second locking element 29 is moved along a guide track 30 against a force of the spring 25 due to the co-operation with the lever 5a. A locking element 29a, for example a peg protruding laterally from the lever 5a, is arranged on the lever 5a. The locking element 29a, in a connected condition of the lever 5a, engages into a further recess 29b. The locking of the lever 5a can be established by the locking element 29, and the locking element 29 is configured to lock into the second notch 28b of the lever 5a by a force of the spring 25 (
By the three-point locking (that is to say due to the notch 28a on the pivoting axis 7a, the locking element 29a in the recess 27b, and the locking element 29 in the notch 28b), a particularly tilting-proof connection of the lever 5a relative to the carrier 9 can be established.
The recess 27a of the tooth arrangement 19 can form an insertion funnel for introducing the lever 5a of the actuating arm 5. Therefore, the lever 5a, upon mounting, can be centered in a direction of the pivoting axis 7a.
For releasing the locking between the lever 5a and the carrier 9, the unlocking element 24 is moved against a force of the spring 25, until the second locking element 29 can be unlocked from the second notch 28b of the lever 5a.
Number | Date | Country | Kind |
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A 50912/2020 | Oct 2020 | AT | national |
Filing Document | Filing Date | Country | Kind |
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PCT/AT2021/060380 | 10/15/2021 | WO |