• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Furniture drive (4) for ejecting a movable furniture part (3) from a closed end position relative to a furniture body (2), comprising a housing (9), an electric drive unit (10) arranged in the housing (9), an electric drive unit (10) drivable ejection lever (7) for ejecting the movable furniture part (3), a transmission (11) having at least one gear (14) for transmitting power from the electric drive unit (10) to the ejection lever (7), the furniture drive (4) comprising a braking device (18) For braking the at least one gear (14).
    公开号:AT513756A4
    申请号:T256/2013
    申请日:2013-04-05
    公开日:2014-07-15
    发明作者:
    申请人:Blum Gmbh Julius；
    IPC主号:
    专利说明:

    • · # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # · · · · · · · · · · · · · · · · · · · ··········· »· 73523-21 / gb ..... Ί"
    The present invention relates to a furniture drive for ejecting a movable furniture part from a closed end position relative to a furniture body, comprising: a housing, an electric drive unit arranged in the housing, an ejection lever which can be driven by the electric drive unit for ejecting the movable furniture part, - A transmission with at least one gear for transmitting power from the electric drive unit to the ejection lever.
    Furthermore, the invention relates to an arrangement with a drawer and with a furniture drive of the type to be described and a piece of furniture with such
    Arrangement.
    Such furniture drives are already known (WO 2006/017864 A1) and serve to eject a movable furniture part after an intended release action (for example, by manual impressions of the movable furniture part in the direction of the furniture body) at least partially from the closed end position into an open position. For ejecting the movable furniture part from the closed end position, a movably mounted ejection lever is provided which can be driven by an electric drive unit. When ejected, the ejection lever contacts the furniture part and presses it by a predetermined distance in an open position. However, it has often been found to be disadvantageous that upon a return movement of the ejection lever (i.e., when the ejection lever is unloaded), unpleasant noises of the transmission are noticeable. This gear noise occurs in the unloaded state by vibrations, which make acoustically disturbing for a user noticeable. Due to the high speed of the electric drive unit, a multi-stage transmission is often used, whereby the noise of the engine are further enhanced. 2/15 · «· · ··························································································· «· · · I ···» · · ** * '*' ** 2 ......
    In AI 503 139 B1 a furniture drive with the features of the preamble is described, wherein a coil spring is arranged in a slip clutch.
    Object of the present invention is therefore to reduce the noise of generic furniture drives largely.
    This is achieved by the features of claim 1. Further advantageous embodiments of the invention are specified in the dependent subclaims.
    According to the invention, it is thus provided that the furniture drive has a braking device for braking the at least one toothed wheel.
    If the ejection lever acts on the movable furniture part during the ejection process, then in most cases a sufficient load is present anyway, which ensures smooth running of the transmission. In the return movement of the ejection lever, however, is free of load, whereby the self-locking of the gear to be braked is low. This low self-locking of the gear is noticeable by audible vibrations of the transmission. The basic idea of the invention now consists in imposing a load on the toothed wheel by means of a braking device so that the self-locking of the toothed wheel is increased, in particular during the return movement of the ejection lever. In this way, the vibrations occurring in the transmission can be suppressed and the unwanted noise can be significantly reduced.
    The movement of the toothed wheel can therefore be braked by frictional action, wherein the brake device rests directly on a friction surface of the gear to be braked. The friction surface of the gear is formed smooth, wherein it is preferably provided that the friction surface is formed by a flat or cylindrical surface of the gear to be braked.
    According to a simple embodiment it can be provided that the brake device has a rubber ring, which with a on the gear 3/15 • ·· · i ♦ ······································································· ··· · trained friction surface - preferably at a substantially flat side surface formed of the gear - cooperates. However, this design has the disadvantage that the gear is also braked during the opening movement of the ejection lever, which would not necessarily be necessary due to the already existing load on the ejection lever.
    According to one embodiment of the invention can therefore be provided that a direction of rotation-dependent braking device is provided which generates virtually no braking force at a movement of the ejection lever in the open position and which brakes a movement of the gear in a return movement of the ejection lever.
    To realize such a direction-dependent brake device, at least one helical spring can be used, by means of which a movement of the toothed wheel to be braked can be braked. It is preferably provided that the helical spring is arranged with an end region on a housing-fixed part. The coil spring mounted on the housing-fixed part is also rotated in the ejection movement of the ejection lever with the gear wheel and changes its shape depending on the rotational position of the gear to be braked.
    Thus, the coil spring acts quasi as a direction-dependent coil spring, wherein when ejecting the ejection lever in the opening direction increases a cross section of the coil spring and thereby reduces the contact force of the coil spring on a - preferably arranged on a gear - friction surface. In the opposite direction - ie in the motor-assisted return movement of the ejection lever - the cross section of the coil spring is reduced, causing it with a higher contact pressure against the friction surface and thus sufficient self-locking of the gear is brought about. Depending on the winding of the coil spring or according to the respective arrangement of the friction surface, the contact force of the coil spring is either increased or decreased.
    The arrangement according to the invention is characterized by a movable furniture part, in particular a drawer, with a furniture drive of the type described. The 4/15
    • · · I ··············································································· Furniture according to the invention has at least one arrangement of the aforementioned type.
    Further details and advantages of the invention will be explained with reference to the embodiment shown in FIGS. It shows or show:
    Fig. 1
    Fig. 2a, 2b Fig. 3a-3c Fig. 4a, 4b a furniture with a furniture body and relatively movable trays in a perspective view, the drawers are ejected by furniture drives from the closed end position into an open position, the furniture drive in a partial Exploded view and an enlarged detail of this, different views of the gear to be braked, the
    Brake device comprises a coil spring, a further embodiment of the invention, wherein the
    Braking device has a rubber ring for braking the gear.
    Fig. 1 shows a furniture 1 with a furniture body 2 in a perspective view, wherein movable furniture parts 3 in the form of drawers are each ejected by a furniture drive 4 from the closed end position into an open position. In the figure shown, the furniture drive 4 is fastened to a rear wall 8 connected to the furniture carcass 2, but a support rail (not shown here) is preferably provided which has at least two predetermined fastening positions for mounting furniture drives 4 along its longitudinal extent. The furniture drive 4 comprises a movably mounted ejection lever 7, which is pivotally mounted in the use position about a vertically extending axis. By pushing the movable furniture part 3 in the closed end position in the direction of the furniture body 2, the ejection lever 7 is actuated by the drawer rear wall 6. A simple releasability of the furniture drive 4 is given by a touch-latch functionality. For this purpose, it can be provided that a sensor, preferably a rotary potentiometer, is used to detect the 5/15 ". • ····················································
    Angular position of the ejection lever 7 is provided. For example, it can then be provided that the signals of the sensor of a drive control unit can be fed, and that the electric drive unit 10 (Fig. 2a) of the furniture drive 4 can be activated by the drive control unit.
    Fig. 2a shows the furniture drive 4 in a partial exploded view. The furniture drive 4 comprises a housing 9, an electric drive unit 10 in the form of a DC motor, a gear 11 formed as a double gears gears 13, 14, 15, 16, and a pivotally mounted about a rotation axis 12 ejection lever 7. The ejection lever 7 is connected to the Gear 16 turned connected. The gear 11 is formed as a multi-stage reduction gear, so that the high speed of the electric drive unit 10 is reduced and a high torque on the ejection lever 7 is transferable. In addition, a braking device 18 is provided with a coil spring 19, by which a movement of the gear 14 is braked.
    Fig. 2b shows the circled in Figure 2a area in an enlarged view. Visible is the electric drive unit 10, which via a worm 17, the mutually engaged gears 13, 14, 15,16 and finally the ejection lever 7 drives. The brake device 18 for braking the gear 14 shown in Fig. 2a has a - preferably multi-wound coil spring 19. This coil spring 19 is provided at an end region with an angled leg 20, wherein the leg 20 is fixed in the mounted position on a housing-fixed part 23 of the furniture drive 4. The housing-fixed part 23 is in the illustrated embodiment with a bearing 21 for supporting the gear 14 - preferably in one piece - connected, wherein the leg 20 of the coil spring 19 in a bearing 21 arranged on the opening 24 can be inserted. The bearing 21 has a bearing pin 22, wherein the gear 14 is rotatably mounted relative to this bearing pin 22. The helical spring 19 surrounds the bearing journal 22 at least in sections and cooperates in the assembly position with a friction surface 31 (FIG. 3a) arranged or formed on the gearwheel 14. 6/15 • ············································································································································································································ ......
    Fig. 3a shows the gear 14 to be braked in a perspective view from below. The toothed wheel 14 comprises two toothing sections 25 and 26, which are completely surrounding the toothed wheel 14. The toothed wheel 14 is provided with a central opening 27 for receiving the bearing pin 22 and with a preferably annular groove 28. The braking device 18 with the coil spring 19 is - except for the leg 20 - completely received within the annular groove 28, resulting in a particularly space-saving and compact design. The leg 20 of the coil spring 19 engages in the mounting position in the opening 24 (Fig. 2b). In the exemplary embodiment shown, the friction surface 31 is formed by a cylindrical groove wall 29 of the gear 14.
    In a movement of the ejection lever 7 (Fig. 2a) in the opening direction, a diameter of the coil spring 19 is increased by friction between the groove wall 29 and coil spring 19, whereby a pressing force of the coil spring 19 decreases on the groove wall 29 of the gear 14 and wherein during a movement of the Ejection lever 7 against the opening direction, a diameter of the coil spring 19 is reduced by friction between the groove wall 29 and coil spring 19, wherein a pressing force of the coil spring 19 increases on the groove wall 29 of the gear 14.
    Fig. 3b shows the gear 14 of FIG. 3a in a cross section. Fig. 3c shows an enlarged view of the circled in Fig. 3b area.
    Fig. 4a shows a further embodiment of the invention, wherein the structure of the furniture drive 4 basically corresponds to Fig. 2b. Instead of the previously described coil spring 19, the brake device 18 now has a rubber ring 30. The rubber ring 20 has a sufficiently high coefficient of friction and brakes rotation of the gear 14 by sliding friction. The rubber ring 30 has a cylindrical recess 32 through which the rubber ring 30 on the bearing pin 22 can be plugged. The housing-fixed part 23 is formed in this figure on the bearing 21, wherein the rubber ring 30 cooperates in the mounting position on the one hand with the housing-fixed part 23, on the other hand with a formed on the gear wheel to be braked friction surface 31 (FIG. 4b). 7/15 • «· · · · · · · ·«
    • · · · ··· I · I «*« · · · · · · · · · · · ··································
    Gears 13, 14, 15 and 16 are movable via a worm 17 of the electric drive 10.
    4b shows a perspective view of the transmission 11 according to the embodiment of FIG. 4b. Evident is the bearing 21 arranged on the rubber ring 30, which is effective between the housing-fixed part 23 and the gear 14. The gear 14 has a smooth or flat side surface 33, which forms the friction surface 31 for the rubber ring 30 in the illustrated embodiment. By the rubber ring 30, however, the gear 14 is always braked, so that the electric drive 10 when moving the ejection lever 7 in the opening direction must also overcome the braking force of the rubber ring 30.
    Innsbruck, April 3, 2013 8/15
    权利要求:
    Claims (15)
    [1]
    ··········· 21/21 claims: 1. Furniture drive (4) for ejecting a movable furniture part (3) from a closed end position relative to a furniture body (2) comprising: - a housing (9), - in the housing (9) arranged electric drive unit (10), - a by the electric drive unit (10) driven ejection lever (7) for ejecting the movable furniture part (3), - a transmission (11) with at least one gear (14) for transmitting power from the electric drive unit (10) the ejection lever (7), characterized in that the furniture drive (4) has a braking device (18) for braking the at least one toothed wheel (14).
    [2]
    2. Furniture drive according to claim 1, characterized in that the braking device (18) directly against a friction surface (31) of the gear to be braked (14).
    [3]
    3. Furniture drive according to claim 2, characterized in that the friction surface (31) of the gear (14) is smooth, wherein it is preferably provided that the friction surface (31) formed by a flat or cylindrical surface of the gear to be braked (14) is.
    [4]
    4. Furniture drive according to claim 2 orS, characterized in that the braking device (18) on the one hand with the friction surface (31) of the gear, on the other hand cooperates with a housing-fixed part (23).
    [5]
    5. Furniture drive according to one of claims 1 to 4, characterized in that a bearing (21) with a bearing pin (22) for supporting the gear to be braked (14) is provided, wherein the gear (14) relative to this bearing pin (22 ) is rotatably mounted. 9/15 ..,. ...- 2- ..
    [6]
    6. Furniture drive according to one of claims 1 to 5, characterized in that the braking device (18) has at least one rubber ring (30) which with a friction surface (31) of the gear, preferably with a flat side surface (33) of the gear (14 ), cooperates.
    [7]
    7. Furniture drive according to one of claims 1 to 5, characterized in that the braking device (18) has at least one coil spring (19).
    [8]
    8. Furniture drive according to claim 7, characterized in that the coil spring (19) having an end portion, preferably via a leg (20) of the coil spring (19), with a housing-fixed part (23) is connected.
    [9]
    9. Furniture drive according to claim 8, characterized in that the bearing (21) has an opening (24), in which the leg (20) of the coil spring (19) is inserted.
    [10]
    10. Furniture drive according to one of claims 7 to 9, characterized in that the helical spring (19) surrounds the bearing pin (22) at least in sections.
    [11]
    11. Furniture drive according to one of claims 7 to 10, characterized in that the gear (14) has a - preferably annular - groove (28), wherein the coil spring (19) against a groove wall (29).
    [12]
    12. Furniture drive according to claim 11, characterized in that during a movement of the ejection lever (7) in the opening direction, a diameter of the coil spring (19) by friction between the groove wall (29) and coil spring (19) is increased, whereby a pressing force of the coil spring (19 ) on the groove wall (29) of the gear (14) decreases and wherein a movement of the ejection lever (7) counter to the opening direction, a diameter of the coil spring (19) by friction between the groove wall (29) and coil spring (19) is reduced 10/15 wherein a pressing force of the coil spring (19) on the groove wall (29) of the gear (14) increases.
    [13]
    13. Furniture drive according to one of claims 1 to 12, characterized in that the ejection lever (7) is pivotally mounted, wherein it is preferably provided that the axis of rotation (12) of the ejection lever (7) in the operating position of the furniture drive (4) extends vertically.
    [14]
    14. Arrangement with a movable furniture part (3), in particular a drawer, and with a furniture drive (4) according to one of claims 1 to 13.
    [15]
    15. Furniture with at least one arrangement according to claim 14. Innsbruck, on 3 April 2013
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    同族专利:
    公开号 | 公开日
    EP2981189A1|2016-02-10|
    WO2014161013A1|2014-10-09|
    AT513756B1|2014-07-15|
    ES2880614T3|2021-11-25|
    EP2981189B1|2021-05-26|
    JP2016514552A|2016-05-23|
    JP6154062B2|2017-06-28|
    CN105072953A|2015-11-18|
    CN105072953B|2017-09-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2003095782A1|2002-05-13|2003-11-20|Rk Rose + Krieger Gmbh & Co. Kg Vrbindungs- Und Positioniersysteme|Electromotive actuator|
    DE202005006716U1|2005-04-27|2005-07-14|Moll System- und Funktionsmöbel GmbH|Item of office or children's' furniture has drawer with pinions mounted on either side which mesh with racks at front and rear of carcass to prevent drawer from sliding transversely|
    AT503139A1|2006-02-08|2007-08-15|Blum Gmbh Julius|OUTBOARD WITH SLIP COUPLING|
    WO2008128256A1|2007-04-23|2008-10-30|Julius Blum Gmbh|Drive for a movable furniture part|WO2021243392A1|2020-06-05|2021-12-09|Julius Blum Gmbh|Device for receiving signals via at least one electrically driveable or adjustable furniture element|
    WO2021243394A1|2020-06-05|2021-12-09|Julius Blum Gmbh|Device for controlling at least one electrically drivable or movable furniture element|AT413472B|2004-08-16|2006-03-15|Blum Gmbh Julius|EJECTION DEVICE FOR A MOVABLE FURNITURE PART|
    AT502939A1|2005-04-28|2007-06-15|Blum Gmbh Julius|FURNITURE|
    DE202007006687U1|2007-05-07|2008-09-18|Hettich-Oni Gmbh & Co. Kg|Ejection device for movable furniture parts|
    AT12708U1|2008-06-19|2012-10-15|Blum Gmbh Julius|FURNITURE DRIVE|
    DE202008016929U1|2008-12-23|2010-05-20|BROSE SCHLIEßSYSTEME GMBH & CO. KG|Drive for the motorized adjustment of an adjusting element of a motor vehicle|JP6783693B2|2017-03-28|2020-11-11|株式会社Ｌｉｘｉｌ|Drawer structure|
    CN111772376A|2020-07-10|2020-10-16|广州思薇梦家居有限公司|Ventilating drawer convenient to pull and capable of preventing clamping|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA256/2013A|AT513756B1|2013-04-05|2013-04-05|furniture drive|ATA256/2013A| AT513756B1|2013-04-05|2013-04-05|furniture drive|
    ES14708790T| ES2880614T3|2013-04-05|2014-02-10|Furniture drive|
    CN201480019931.4A| CN105072953B|2013-04-05|2014-02-10|Furniture drive|
    EP14708790.2A| EP2981189B1|2013-04-05|2014-02-10|Furniture drive|
    PCT/AT2014/000028| WO2014161013A1|2013-04-05|2014-02-10|Furniture drive|
    JP2016505648A| JP6154062B2|2013-04-05|2014-02-10|Furniture drive|
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