Furniture drive for driving a movable furniture part
Patent Information
- Application Number
- EP2023768122
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-09-09
- Filing Date
- 2023-08-30
- Publication Date
- 2025-07-16
AI Technical Summary
Existing furniture drives with high-speed electric motors face challenges in noise reduction when integrated into furniture walls, as prior sound absorption measures are insufficient due to increased noise transmission and resonance issues.
The furniture drive incorporates a coupling device, partially made of sound-absorbing material, to decouple the electric motor from the housing and drive train, using a belt or gear with sound-absorbing inserts, along with multiple damping elements to reduce noise propagation.
This solution effectively reduces sound transmission by decoupling noise between the motor and housing and within the drive train, particularly effective with high-speed external rotor motors, minimizing resonance and noise propagation within the furniture.
Smart Images
Figure 1.1
Abstract
Description
[0001] Furniture drive for driving a movable furniture part
[0002] The invention relates to a furniture drive for driving a movable furniture part according to the preamble of claim 1 and to a piece of furniture comprising at least one movable furniture part and at least one such furniture drive, wherein the furniture part is movably mounted on the furniture via the at least one furniture drive.
[0003] Furniture drives are known from the prior art in which the sound transmission of the noise caused by the electric motor is reduced by mounting the electric motor in and / or on the housing by means of a bearing device comprising a damping element made of a sound-damping material.
[0004] This measure has been sufficient so far, as servo motors with relatively low speeds are used as electric motors. At the same time, the furniture drives are relatively large and, in the case of flap fittings, are mounted on the outside of the flap fittings and thus surrounded by air, making it relatively difficult for sound to propagate.
[0005] In recent years, however, there have been efforts to reduce the size of furniture drives, allowing them to be installed, in particular, concealed within a piece of furniture. This requires the use of different electric motors with higher speeds. On the other hand, sound can propagate more effectively when integrated into a wall. In the worst case, the furniture body acts as a resonator.
[0006] Under these conditions, the noise reduction measures known from the prior art are insufficient. The object of the present invention is to provide a furniture drive that is improved compared to the prior art, as well as a piece of furniture with such an improved drive, wherein the furniture drive is characterized in particular by reduced sound transmission of the noise generated by the electric motor.
[0007] This object is achieved by the features of claims 1 and 13.
[0008] In the furniture drive, at least one coupling device is provided, via which the electric motor, preferably a shaft of the electric motor or a gear wheel connected thereto, is connected to the gear, wherein the coupling device consists at least partially of a sound-damping material.
[0009] In this way, the electric motor is completely decoupled from the housing and the drivetrain: on the one hand, from the housing via the bearing device, and on the other hand, from the drivetrain via the coupling device. In other words, not only is noise decoupling between the motor and the housing, but simultaneously, noise decoupling within the drivetrain takes place. This effectively reduces the transmission of noise generated by the electric motor.
[0010] According to a preferred embodiment, the at least one coupling device comprises a belt, preferably a toothed belt. In this case, the belt can fulfill a dual function: on the one hand, it represents a first gear ratio in the transmission, and on the other hand, the use of a belt provides noise isolation between the engine and the transmission.
[0011] Alternatively or additionally, at least one coupling device in the form of a gearwheel may be used, into which a sound-damping material, preferably in the form of an insert, is embedded. In this way, the sound can be decoupled in a gear stage with gearwheels.
[0012] The advantages of the present invention are particularly evident in an embodiment in which the at least one electric motor is designed as an external rotor motor or a disc rotor motor. These motors are characterized by a comparatively flat design. However, these motors also have a high speed and thus increased noise generation, which can be effectively compensated for technically by means of the invention.
[0013] A particularly preferred embodiment is characterized in that the at least one bearing device has at least one bearing part connected to the electric motor, preferably wherein the bearing part is designed as a steel axle, rivet or pin. In this context, it has proven advantageous that at least one first damping element and at least one second damping element are arranged on the bearing part, wherein the first damping element reduces sound propagation between the electric motor and the housing in a first spatial direction and the second damping element reduces sound propagation between the electric motor and the housing in a second spatial direction transverse to the first spatial direction, preferably wherein the first and / or the second damping element is designed as a damping disc or damping sleeve.It is recommended to use foamed damping discs and / or damping sleeves with a steel axle / rivet / pin inserted into them. The damping discs can be pre-tensioned via the housing cover and base.
[0014] Further advantageous embodiments are defined in the dependent claims. Further details and advantages of the invention are explained in more detail below with reference to the description of the figures and the drawings. In these figures:
[0015] Fig. 1, 2 a piece of furniture according to an embodiment in a perspective view Fig. 1 and in an exploded view Fig. 2,
[0016] Fig. 3 shows a furniture drive according to an embodiment without a housing cover in a plan view from the side,
[0017] Fig. 4 - 7 an assembly comprising the electric motor in a perspective view Fig. 4, a partial exploded view Fig. 5, a plan view from above Fig. 6, a cross-sectional view along the cross-sectional plane 38 Fig. 7, wherein the section
[0018] 44 is additionally shown enlarged,
[0019] Fig. 8, 9 a part of the furniture drive comprising the electric motor in a plan view from the side Fig. 8 and in a cross-sectional view along the cross-sectional plane 43 Fig. 9, wherein the section
[0020] 45 is additionally shown enlarged, and
[0021] Fig. 10 - 12 a coupling device comprising a gear with an insert, wherein Fig. 10 shows a perspective view, Fig. 11 an exploded view and Fig. 12 a cross-sectional view, wherein the section 46 is additionally shown enlarged.
[0022] 1 and 2 show a piece of furniture 25 in the form of a wall unit, comprising a movable furniture part 2 in the form of a flap that can be opened upwards and furniture drives 1, wherein the furniture part 2 is movably mounted on the furniture 25 via the furniture drives 1.
[0023] The furniture part 2 is pivotable about a horizontal axis 31. The furniture 25 can comprise a rear wall 28, a top panel 29, and a bottom panel 30, as in the illustrated case.
[0024] The furniture 25 may comprise walls 26, wherein housings 3, 21 of the furniture drives 1 are each substantially completely inserted into a recess 27 in the walls 26.
[0025] The housings 3, 21 preferably have a maximum width 24 of less than 18 mm, preferably less than 16 mm.
[0026] An electric motor 4 is arranged in the housing 3, which is only shown schematically in Fig. 2. In particular, the actuator 7, which is connected or connectable to the furniture part, is pivotably mounted on the housing 21.
[0027] Not all furniture drives 1 need to be equipped with an electric motor drive unit. In the illustrated case, only one of the furniture drives 1 has an electric motor drive unit.
[0028] Alternative designs of a piece of furniture are conceivable in which the furniture drives according to the invention are used.
[0029] Fig. 3 shows a furniture drive 1 for driving a movable furniture part 2, comprising at least one housing 3, 21, at least one electric motor 4, at least one bearing device 5, by means of which the electric motor 4 is mounted in and / or on the housing 3, 21, wherein the at least one bearing device 5 comprises at least one damping element 6, 15 made of a sound-damping material, at least one actuator 7, which can preferably be moved back and forth between two end positions, for exerting force on the furniture part 2 to be driven, and a gear 8 connected between the electric motor 4 and the actuator 7, wherein at least one coupling device 9, 10 is provided, via which the electric motor 4, preferably a shaft 11 of the electric motor 4 or a gear wheel 12 connected thereto, is connected to the gear 8, wherein the coupling device 9, 10 consists at least partially of a sound-damping material.Optional details of the bearing device 5 and the coupling device 9, 10 are shown in the following figures.
[0030] The electric motor 4 and the transmission 8 can be arranged in a first housing 3, as in the case shown, and the actuator 7 can be arranged in a second housing 21, which is structurally separate from the first housing 3, preferably wherein the two housings 3, 21 are arranged one above the other in a coupled state essentially in a common plane.
[0031] At least one transmission device 20 is provided, with which the transmission 8 is connected to the actuator 7, wherein the transmission device 20 comprises at least one lever. Alternative embodiments of the transmission device 20 are also conceivable.
[0032] At least one lever arrangement 22 is provided, via which the actuator 7 is pivotally connected to the housing 21. In this specific case, the lever arrangement 22 forms a 7-joint arrangement.
[0033] At least one mechanical force accumulator 23 is provided, with which a force can be exerted on the actuator 7 to compensate for the weight of the furniture part 2 to be driven. The mechanical force accumulator 23 can have one or more compression springs 34.
[0034] A force transmission lever 35 may be provided to transmit a force stored in the mechanical force accumulator 23 to the actuator 7. Furthermore, a force adjustment device 33 may be provided, which is preferably operable from an end face of the housing 21 and with which a spring preload of the springs 34 can be adjusted.
[0035] In a first end position, which corresponds to a closed position of the furniture part 2, the actuator 7 is arranged essentially completely in the housing 21.
[0036] The transmission 8 comprises several gear stages 32, in which an overload and / or a freewheel clutch can also be integrated.
[0037] Figs. 4 to 7 show an assembly comprising the electric motor 4.
[0038] In this assembly, the coupling device 9 comprises a belt, which, as in the illustrated case, can be designed as a toothed belt. The belt can have internal teeth that interact with the teeth of the gear 12 arranged on the shaft 11 of the electric motor 4. The internal teeth are not shown in the figures.
[0039] The teeth located on the inside of the belt can be molded from an elastomer. Examples of suitable materials for the teeth include rubber, chloroprene rubber, hydrogenated acrylonitrile butadiene rubber, or polyurethane plastic.
[0040] In the illustrated case, the at least one electric motor 4 is designed as an external rotor motor. Alternatively, the use of a disc rotor motor is also possible.
[0041] The electric motor 4 is supplied via power and signal lines 36. The electric motor 4 has a motor flange 37.
[0042] The at least one bearing device 5 has at least one bearing part 14 connected to the electric motor 4, wherein the bearing part is designed as a steel axle, rivet or pin.
[0043] In the specific case, more than one, preferably three, bearing devices 5 are provided, via which the electric motor 4 is mounted in and / or on the housing 3.
[0044] The sound-damping material of the damping element 6, 15 of the bearing device 5 and / or the coupling device 9, 10 is, for example, a rubber, a caoutchouc, a plastic, or an open- or closed-cell material, preferably a polyurethane elastomer, rubber, silicone, EVA or PE foam.
[0045] Figs. 8 and 9 show part of the furniture drive 1 comprising the electric motor 4.
[0046] At least one first damping element 6 and at least one second damping element 15 are arranged on the bearing part 14, wherein the first damping element 6 is arranged such that it reduces sound propagation between the electric motor 4 and the housing 3 in a first spatial direction 16, and the second damping element 15 is arranged such that it reduces sound propagation between the electric motor 4 and the housing 3 in a second spatial direction 17 transverse to the first spatial direction 16, preferably wherein the first and / or the second damping element 6, 15 is designed as a damping disc or damping sleeve.
[0047] The bearing device 5 has at least one free end 18, which is arranged in a recess 19 of the housing 3. The electric motor 4 and the motor flange 37 are not in direct contact with the housing 3 at any point.
[0048] Figures 10 to 12 show a coupling device 10 comprising a gear wheel into which a sound-damping material, preferably in the form of an insert 13, is embedded.
[0049] The insert 13 is arranged between a first gear element 39 and a second gear element 40. The first gear element 39 is connected to the insert 13 via a first positive connection 41. The second gear element 40 is connected to the insert 13 via a second positive connection 42. The insert 13 reduces sound transmission between the two gear elements 39 and 40.
[0050] The gear can be used, for example, as the first gear stage and / or combined with a belt, as shown in the previous figures.
Claims
Patent claims:
1. Furniture drive (1) for driving a movable furniture part (2), comprising at least one housing (3, 21), at least one electric motor (4), at least one bearing device (5), via which the Electric motor (4) is mounted in and / or on the housing (3, 21), wherein the at least one bearing device (5) comprises at least one damping element (6, 15) made of a sound-damping material, at least one actuator (7), preferably movable back and forth between two end positions, for exerting force on the furniture part (2) to be driven, and a Gearbox (8), characterized in that at least one coupling device (9, 10) is provided, via which the electric motor (4), preferably a shaft (11) of the electric motor (4) or a gear wheel (12) connected thereto, is connected to the transmission (8), wherein the coupling device (9, 10) consists at least in regions of a sound-damping material.
2. Furniture drive (1) according to claim 1, wherein the at least one coupling device (9) comprises a belt, preferably a Timing belt, includes.
3. Furniture drive (1) according to claim 1 or 2, wherein the at least one coupling device (10) comprises a gear wheel into which a sound-damping material, preferably in the form of a insert part (13), is embedded. INCORPORATED BY REFERENCE (RULE 20.6) 4. Furniture drive (1) according to one of claims 1 to 3, wherein the at least one electric motor (4) is designed as an external rotor motor or as Disc rotor motor.
5. Furniture drive (1) according to one of claims 1 to 4, wherein the at least one bearing device (5) has at least one Electric motor (4) connected bearing part (14), preferably wherein the bearing part is designed as a steel axle, rivet or pin.
6. Furniture drive (1) according to claim 5, wherein at least one first damping element (6) and at least one second damping element (15) are arranged on the bearing part (14), wherein the first damping element (6) is arranged such that it has a Sound propagation between the electric motor (4) and the Housing (3) in a first spatial direction (16), and the second damping element (15) is arranged such that sound propagation between the electric motor (4) and the Housing (3) in a second spatial direction (17) transverse to the first spatial direction (16), preferably wherein the first and / or the second damping element (6, 15) is Damping disc or damping sleeve is designed.
7. Furniture drive (1) according to claim 5 or 6, wherein the Bearing device (5) has at least one free end (18) which is arranged in a recess (19) of the housing (3).
8. Furniture drive (1) according to one of claims 1 to 7, wherein more than one, preferably three, bearing devices (5) are provided, via which the electric motor (4) in and / or on the housing (3) is stored.
9. Furniture drive (1) according to one of claims 1 to 8, wherein the sound-damping material of the damping element (6, 15) of the INCORPORATED BY REFERENCE (RULE 20.6) Bearing device (5) and / or the coupling device (9, 10) a rubber, a rubber, a plastic, or an open- or closed-cell material, preferably a polyurethane Elastomer, rubber, silicone, EVA or PE foam.
10. Furniture drive (1) according to one of claims 1 to 9, wherein at least one transmission device (20) is provided, with which the gear (8) is connected to the actuator (7), preferably wherein the transmission device (20) comprises at least one lever.
11. Furniture drive (1) according to one of claims 1 to 10, wherein the Electric motor (4) and the transmission (8) in a first housing (3) and the actuator (7) on a second, structurally different from the first Housing (3) separate housing (21), preferably wherein the two housings (3, 21) are arranged one above the other in a coupled state substantially in a common plane.
12. Furniture drive (1) according to one of claims 1 to 11, wherein at least one lever arrangement (22) is provided, via which the actuator (7) is pivotally connected to the housing (21), and / or at least one mechanical force accumulator (23) is provided, with which a force for compensating the Weight of the furniture part to be driven (2), on the Actuator (7) can be exerted, and / or the actuator (7) is arranged in a first end position substantially completely in the housing (21).
13. Furniture drive (1) according to one of claims 1 to 12, wherein the Housing (3, 21) has a maximum width (24) of less than 18 mm, preferably less than 16 mm. INCORPORATED BY REFERENCE (RULE 20.6) 14. Furniture (25), preferably a wall unit, comprising at least one movable furniture part (2), preferably in the form of a flap that can be opened upwards, and at least one furniture drive (1) according to one of the preceding claims, wherein the furniture part (2) is movably mounted on the furniture (25) via the at least one furniture drive (1).
15. Furniture (25) according to claim 14, wherein the furniture (25) comprises at least one wall (26), wherein the housing (3, 21) of the at least one furniture drive (1) is substantially completely inserted into a recess (27) in the wall (26). INCORPORATED BY REFERENCE (RULE 20.6) Patent claims:
1. Vehicle (1), in particular a single-track vehicle, comprising - at least one front fork (2), suitable for Bearing a front wheel (3), - at least one mudguard (4) attached to the front fork (2) is attached, - a data acquisition unit (5) with at least one Sensor (6) for recording data relating to the Vehicle (1) and / or the environment, characterized in that the data acquisition unit (5) one on an upper side of the fender (4) in front of the Front wheel fork (2), preferably substantially centrally arranged satellite signal receiver (8).
2. Vehicle (1) according to the preceding claim, characterized in that the satellite signal receiver (8) is fastened above the fender (4) and / or on the fender (4), preferably detachably.
3. Vehicle (1) according to one of the preceding claims, characterized in that the Satellite signal receiver (8) at least a first Fastening device (9) which is designed to fasten the satellite signal receiver (8) above the fender (4) and / or on the fender (4), preferably detachably. FALSELY SUBMITTED (RULE 20.5bis) 4. Vehicle (1) according to one of the preceding claims, characterized in that the data acquisition unit (5) has a storage unit (7).
5. Vehicle (1) according to claim 4, characterized in that the storage unit (7) and the Satellite signal receivers (8) are designed and / or arranged separately from one another.
6. Vehicle (1) according to one of claims 4 or 5, characterized in that the storage unit (7) has at least one second fastening device (10) which is designed to fix the storage unit (7) to the Vehicle (1), preferably detachably.
7. Vehicle (1) according to claim 6, characterized in that the at least one second fastening device (10) is designed to mount the storage unit (7) on a front wheel fork (2), in particular on a Fork leg, preferably detachable, to be attached.
8. Vehicle (1) according to one of claims 3 to 7, characterized in that the at least one first Fastening device (9) and / or the at least one second fastening device (10) at least one band (11), preferably at least one elastic band, preferably with at least one closure (12).
9. Vehicle (1) according to one of claims 3 to 8, characterized in that the storage unit (7) and the Satellite signal receiver (8), preferably by a FALSELY SUBMITTED (RULE 20.5bis) detachable data cable (13), in particular for the mutual transmission of recorded data, are data-connected to one another.
10. Vehicle (1) according to at least one of the preceding Claims, characterized in that the Data acquisition unit (5) an interface (14) to Transferring external and / or the collected and / or vehicle received data, in particular for Transmitting data to an external receiver and / or receiving data from an external Sender.
11. Vehicle (1) according to claim 10, characterized in that the interface (14) is designed for wireless transmission of data, in particular according to the Wi-Fi standard and / or Bluetooth standard.
12. Vehicle (1) according to one of claims 3 to 11, characterized in that the storage unit (7) has at least one memory (15) for storing the Satellite signal receiver (8) and / or the at least one sensor (6) detected data and / or the externally received data.
13. Vehicle (1) according to one of the preceding claims, characterized in that the data acquisition unit (5) at least one lamp (16), in particular for Displaying states concerning the vehicle (1) and / or the data acquisition unit (5). FALSELY SUBMITTED (RULE 20.5bis) 14. Vehicle (1) according to one of the preceding claims, characterized in that the data acquisition unit (5) has at least one switch (17) which is designed to switch the data acquisition unit (5) on and / or off and / or To influence the function of the data acquisition unit (5).
15. Vehicle (1) according to one of the preceding claims, characterized in that the data acquisition unit (5) at least one detachable power connection (18) for Vehicle (1) and / or to a power source.
16. Vehicle (1) according to one of claims 3 to 15, characterized in that the storage unit (7) and the Satellite signal receivers (8) are connected to one another by a power cable (19), in particular detachably.
17. Vehicle (1) according to one of the preceding claims, characterized in that the data acquisition unit (5) an acceleration sensor and / or a temperature sensor and / or an inclination sensor.
18. Vehicle (1) according to one of the preceding claims, wherein the data acquisition unit (5) has at least one Transmission device (20), in particular comprising at least one cable input and / or one cable output, for transmitting power and / or data relating to the vehicle (1) and / or data relating to the environment.
19. Vehicle (1) according to one of the preceding claims, characterized in that the data acquisition unit FALSELY SUBMITTED (RULE 20.5bis) (5) has at least one computing unit (21), in particular for creating statistics from the data recorded and / or received from the vehicle (1).
20. Data acquisition unit (5) with at least one sensor (6) for recording data relating to a, in particular single-track, vehicle (1) and / or the environment, consisting of a storage unit (7) and a Satellite signal receiver (8), characterized in that the satellite signal receiver (8), preferably separately from the storage unit (7), is arranged on an upper side of the mudguard (4) in front of the front wheel fork (2), preferably substantially centrally.
21. Use of a data acquisition unit (5) according to Claim 20 in a vehicle (1), in particular according to one of claims 1 to 19.
22. A method for operating a data acquisition unit (5) according to claim 20 in a vehicle, wherein the Satellite signal receiver (8) - spatially separated from the storage unit (7) on the vehicle (1), and - on an upper side of a fender (4) in front of the Front wheel fork (2), preferably arranged substantially centrally. FALSELY SUBMITTED (RULE 20.5bis)