Patent Abstract:
An ejector assembly for a movable furniture part, for example a drawer, composed of two ejector units that are interconnected by a synchronizing bar. The ejector units are provided for ejecting the movable furniture part in an opening direction of an item of furniture in relation to a furniture base unit of the item of furniture. The synchronizing bar synchronizes a switching function of the ejector units. At least one ejector unit is designed in such a manner that the synchronizing bar on a receptacle of the first ejector unit is slidable so far inward that said synchronizina bar may be introduced into a receptacle of an opposite second ejector unit. A positioning member for positioning the synchronizing bar in a functional position between the ejector units is provided.

Full Description:
[0001]    This application claims the benefit under 35 USC §119(a)-(d) of German Application No. 20 2015 106 773.9 filed Dec. 14, 2015, the entirety of which is Incorporated herein by reference. 
       FIELD OF THE INVENTION 
       [0002]    The present invention relates to an ejector assembly for a movable furniture part, and to an item of furniture having such a device. 
       BACKGROUND OF THE INVENTION 
       [0003]    An ejector assembly of the type mentioned at the outset is known, and comprises two ejector units, for example. 
         [0004]    The ejector assembly is provided for ejecting a movable furniture part, for example, a drawer, in an opening direction of the furniture base unit. To this end, the ejector units are disposed in a positionally fixed manner on the rear side of a furniture base unit, for example, and are interconnected by way of a synchronizing bar which couples a movement of the ejector assembly. 
         [0005]    When the ejector assembly is being fitted, the synchronizing bar is cut to length by a technician and is fitted conjointly with the ejector units. 
       SUMMARY OF THE INVENTION 
       [0006]    The present invention is based on the object of providing an alternative ejector assembly for a movable furniture part that facilitates fitting of the ejector units to the furniture part and/or of the synchronizing bar to the ejector units. 
         [0007]    The present invention proceeds from an ejector assembly for a movable furniture part, for example, a drawer, wherein the ejector assembly is composed of two ejector units which are interconnected by a synchronizing bar, wherein the ejector units are provided for ejecting the movable furniture part in an opening direction of an item of furniture in relation to a furniture base unit of the item of furniture, and wherein the synchronizing bar synchronizes a switching function of the ejector units. 
         [0008]    The ejector unit may, in particular, be fitted to a lower side of a bottom of a drawer. Advantageously, when viewed from a drawer front, two ejector units of one ejector assembly are disposed on the left and on the right, respectively, so as to be separate from one another and opposite one another on the lower side of the drawer bottom. It is also imaginable for the ejector units to be fastened to a furniture base unit in a positionally fixed manner in relation to a movable furniture part. Upon one or both ejector units being activated or triggered, for example, by the drawer being pushed beyond a resting position in the closing direction by a user, the synchronizing bar mutually synchronizes the ejector units, and the ejector units may conjointly eject the drawer in the opening direction. Reliable and simultaneous triggering of the two ejector units is, thus, guaranteed by the synchronizing bar. 
         [0009]    The core concept of the present invention now lies in that at least one ejector unit is designed in such a manner that the synchronizing bar on a receptacle of the first ejector unit is slidable so far inward that the synchronizing bar may be introduced into a receptacle of an opposite second ejector unit, wherein a positioning member for positioning the synchronizing bar in a functional position between the ejector units is provided. 
         [0010]    A design embodiment according to the present invention of the receptacle enables the synchronizing bar to be fitted and removed again once the ejector units have been fixedly fitted to the drawer, for example. On account thereof, fitting of the synchronizing bar is simplified such that the fitting may, in particular, be performed separately from fitting the ejector units to the movable furniture part. 
         [0011]    In the functional position, the synchronizing bar is positioned in a centered manner between the ejector units, for example, and is plug-fitted preferably to identical depths in both ejector units. 
         [0012]    The positioning member advantageously enables equalization of the longitudinal tolerance of the synchronizing bar. For example, a length of the synchronizing bar that is adapted in such a manner so as to interconnect the two ejector units may vary by up to 30 mm. Advantageously between 0 and 25 mm, between 0 and 20 mm, between 0 and 15 mm, between 0 and 10 mm, or between 0 and 5 mm. A difference in length may be equalized by way of the possibility of deep insertion into an ejector unit. 
         [0013]    Moreover, it is of advantage that the ejector units and/or the synchronizing bar are/is configured such that the synchronizing bar, in a fitted position of the ejector units on the item of furniture, may be inserted between the ejector units. It is conceivable herein that the synchronizing bar is designed so as to be length adjustable, optionally so as to be telescopic. 
         [0014]    It is furthermore proposed that the positioning member comprises at least one spring element. 
         [0015]    The spring element urges, for example, the synchronizing bar in the fitted state on the ejector units into the functional position. 
         [0016]    In one advantageous design embodiment of the receptacle, the synchronizing bar when being fitted is insertable into the receptacle counter to the force of the spring element. 
         [0017]    It is also imaginable for the positioning member to be designed in the fashion of a bayonet or a gate. On account thereof, a synchronizing bar in the case of an insertion motion by way of the first end thereof may be guided on the ejector unit such that the synchronizing bar by way of the second end thereof may be inserted into the second ejector unit which is disposed so as to be opposite the first ejector unit, and the synchronizing bar is subsequently moved into the functional position between the two ejector units, wherein the positioning member that is designed in the fashion of a bayonet or a gate may provide locking of the synchronizing bar in at least one ejector unit. 
         [0018]    It is also proven to be advantageous that the receptacle has a transmission member which is designed in such a manner that the synchronizing bar couples to the transmission member in a substantially form-fitting manner such that a movement of the receptacle may be transmitted to the synchronizing bar, in particular, to the opposite ejector unit. 
         [0019]    A rotary movement and/or a linear sliding movement of the receptacle is advantageously transmittable to the synchronizing bar by virtue of the transmission member. 
         [0020]    In particular, the synchronizing bar in the cross section to a longitudinal axis has an out-of-round contour by way of which the synchronizing bar in a known manner is disposable on the receptacle in a form-fitting manner. For example, the contour is configured so as to be rectangular, in particular, polygonal, or elliptic. 
         [0021]    The transmission member of the receptacle preferably has a contour which is complementary to the external contour of the synchronizing bar. For example, the transmission member is designed in a tubular fashion, having an internal contour which is complementary to the external contour of the synchronizing bar. 
         [0022]    It is also of advantage that the receptacle comprises a repositionable guide element which in the fitted state of the synchronizing bar on the receptacle acts between the positioning means and the synchronizing bar. 
         [0023]    The guide element transmits a force of the positioning member, and thus advantageously a movement of the positioning member, to a synchronizing bar which is disposed in the receptacle, for example. 
         [0024]    For example, in the case of the synchronizing bar being inserted into the receptacle, the guide element transmits the force of the positioning member to the synchronizing bar in a force direction that is parallel with a rotation axis of the receptacle and/or a longitudinal axis of the guide element and/or a longitudinal axis of the synchronizing bar. In particular, the rotation axis of the receptacle and/or the longitudinal axis of the guide element and/or the longitudinal axis of the synchronizing bar that is inserted into the receptacle are congruent. 
         [0025]    A movement of the guide element in turn is preferably guided by a guide contour that is configured on the receptacle, this guide contour corresponding in particular to the contour of the transmission member. The movement of the guide element in the fitted state of the ejector unit is advantageously configured so as to be perpendicular to a movement direction of the drawer, and parallel with the drawer bottom, or so as to be parallel with the longitudinal axis of the synchronizing bar that is inserted into the receptacle. 
         [0026]    In one advantageous modification of the ejector assembly, the guide element has a coupling member which may couple to the synchronizing bar in a form-fitting manner. The coupling member of the guide element advantageously catches the synchronizing bar, in particular, a front side of the synchronizing bar, in such a manner that the coupling member and the synchronizing bar is held in a substantially form-fitting manner at least in one direction that is perpendicular to a force of the positioning member that acts on the synchronizing bar. 
         [0027]    It is also of advantage that the receptacle has a guide member for the positioning member. 
         [0028]    A movement direction of the positioning member, for example, of the spring element, and/or of the guide element, is predefined by the guide member. Advantageously, the positioning member, in particular, the spring element, and/or the guide element, is/are movably mounted, for example, linearly by means of the guide member. On account thereof, the positioning member and/or the guide element may not cant or jam, respectively, in the case of movement. 
         [0029]    It is furthermore proposed that the guide element is designed so as to be pin-shaped. 
         [0030]    A pin-shaped design of the guide element advantageously enables the guide element to be mounted on the receptacle, in particular, on the guide member, so as to be movable, for example linearly displaceable and/or rotatable, at two mutually opposite ends. 
         [0031]    It is moreover advantageous for the guide element to have a detent. 
         [0032]    By way of a detent of the guide element the spring element may be disposed on the receptacle and on the guide element in such a manner that the spring element is under pre-tensioning. 
         [0033]    Advantageously, the receptacle comprises a retaining element, and the detent of the guide element is configured so as to abut the retaining element such that the guide element in the fitted state on the receptacle cannot be released from the latter. 
         [0034]    In particular, the guide element, and thus the detent of the guide element, are urged toward the retaining element by the force of the positioning member, for example, of the spring element. Upon abutment of the detent of the guide element on the retaining element, a movement of the guide element is stopped, the spring element in this position being subjected to pre-tensioning. 
         [0035]    It is also of advantage that the guide element is designed for guiding the positioning member, for example a coil spring. 
         [0036]    By way of the design of the guide element that may be pin-shaped, for example, a force of the positioning member, in particular, of the coil spring, may advantageously be linearly transmitted. It is also conceivable that a force of a helical spring or of a leg spring may be transmittable by way of the guide element. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0037]    An exemplary embodiment will be explained in more detail by means of the schematic drawings hereunder, while stating further individual details and advantages. 
           [0038]      FIG. 1  shows a perspective view of an item of furniture having a drawer and an ejector assembly disposed thereon; 
           [0039]      FIG. 2  shows a perspective exploded illustration of a receptacle of an ejector unit of the ejector assembly; and 
           [0040]      FIGS. 3 to 13  show a fitting sequence of a synchronizing bar to an ejector assembly, in a perspective view onto a lower side of a drawer bottom ( FIGS. 3, 4, 6-12 ) having an ejector assembly disposed thereon, or in a perspective view onto a receptacle of  FIG. 2  ( FIGS. 5, 13 ). 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0041]    An item of furniture  1  according to the present invention is shown in  FIG. 1 . The item of furniture comprises a furniture base unit  2  and a drawer  3  that is in the opened state on the furniture base unit  2 . The drawer  3  is displaceably guided on pull-out guides  4 ,  5  on the furniture base unit  1 , and comprises a drawer front  6 , drawer side walls  7 ,  8 , a rear wall  9 , and a drawer bottom  10 . An ejector assembly  11  (illustrated by dashed lines) is fitted on a lower side of the drawer bottom  10 . The ejector assembly  11  comprises two ejector units  12  and  13  which are interconnected by a synchronizing bar  14  (illustrated by dashed lines). 
         [0042]    The drawer  3 , from a closed state on the furniture base unit  2 , by means of the ejector units  12 ,  13  of the ejector assembly  11  that are synchronized by the synchronizing bar  14 , may be ejected in an opening direction A to an opened state on the furniture base unit  2 . 
         [0043]    The ejector units  12 ,  13  are activated externally by a user, for example, in that the latter moves the drawer  3  counter to an opening direction A, for example, by way of finger pressure, and on account thereof activates at least one ejector unit  12 ,  13 . In the case of one ejector unit  12 ,  13  being activated, the second ejector unit  12 ,  13  that is disposed opposite is also activated by the synchronizing bar  14  and synchronized with a movement of the first ejector unit  12 ,  13 . 
         [0044]    A receptacle  15  according to the invention of an ejector unit  12 ,  13  comprises a positioning member which is configured as a coil spring  16 , for example, a pin-shaped guide element  17 , a transmission member  18 , and a guide member  19  ( FIG. 2 ). 
         [0045]    The synchronizing bar  14 , in a manner perpendicular to the longitudinal axis thereof, has a UFO-type external contour, and along the longitudinal axis of the former, has a hollow cylindrical core  28 . By way of the UFO-type external contour the external contour is out-of-round and, on account thereof, in the Inserted state in the receptacle  15  may configure a substantial form-fit with the transmission member  18 . To this end, the transmission member  18  comprises an internal contour which is identical or at least similar to the external contour of the synchronizing bar  14 , such that a movement of the receptacle  15  may be transmitted to the synchronizing bar  14 , or vice versa. 
         [0046]    Furthermore, the transmission member  18  is designed in such a manner that the synchronizing bar  14  in a forward region  20  may be inserted into the transmission member  18  in the insertion direction B, or perpendicularly to the insertion direction B. In order for a movement to be able to be transmitted from the transmission member  18  to the synchronizing bar  14 , the synchronizing bar  14  subsequently has to be inserted into the transmission member  18  in the insertion direction B. To this end, the transmission member  18  has lips  21 ,  22  which during the insertion procedure guide the synchronizing bar  14 , on the one hand, and on the other hand guarantees a transmission of force or of a rotary movement, respectively, in that the lips  21 ,  22  encompass or encircle the UFO-type peripheries of the external contour. 
         [0047]    For example, the guide element  17  is designed in a cylindrical manner at a first end  23  such that the former may be rotatably mounted on the guide member  19 . Moreover, the external diameter of the cylindrical end  23  is such that the coil spring  16  may be push-fitted onto the end  23 . In the inserted state of the coil spring  16  and of the guide element  17  on the receptacle  15 , the coil spring  16  by way of a first end abuts a detent on the receptacle  15  (not shown), and by way of a second end that is opposite the first end abuts a detent  24  of the guide element  17 . 
         [0048]    The guide element  17 , on a second end that is opposite the first end  23 , comprises a coupling member  25 . The coupling member  25  is designed in such a manner, for example, that it has an external contour  26  that is identical to the external contour of the synchronizing bar  14 . On account thereof, the guide element  17  in the inserted state on the receptacle  15  is guided so as to be linearly movable by the transmission member  18  at the second end. The coupling member  25  furthermore has a coupling element  27  which during fitting of the synchronizing bar  14  engages in the hollow core  28  of the synchronizing bar  14 , fixing the latter perpendicularly to the longitudinal axis thereof on the coupling member  25  such that a movement of the synchronizing bar  14 , in particular, in the insertion direction B on the ejector unit  12 , or in the insertion direction C on the ejector unit  13 , is guided. 
         [0049]    In the assembled state of the receptacle  15  the guide element  17  by way of the detent  24  of the latter abuts a retaining element  29  of the receptacle  15 . On account thereof, the guide element  17  is unable to drop out of the receptacle  15 . On account thereof, the coil spring  16  is furthermore held under pre-tensioning. 
         [0050]    Fitting of the synchronizing bar  14  to the ejector assembly  11  that is fitted on the drawer-bottom lower side  30  is described hereunder by means of  FIGS. 3 to 13 . 
         [0051]    In the first fitting step, the ejector unit  13  is fitted by a technician on the right side to the drawer-bottom lower side  30 , and the ejector unit  12  is fitted opposite thereto on the left side, for example, by screwing or adhesive bonding. Thereafter, the length of the synchronizing bar  14  is adapted by the technician, so as to correspond to the spacing of the ejector units  12 ,  13 , the synchronizing bar  14  being cut to length, for example ( FIG. 3 ). 
         [0052]    In a subsequent fitting step, the synchronizing bar  14  by way of a first end  31  is inserted into the left ejector unit  12 , for example ( FIGS. 4, 5 ). In this fitted state, the synchronizing bar  14  is still disposed between the ejector units  12 ,  13  in such a manner that said synchronizing bar by way of the second end  32  thereof that is opposite the first end  31  cannot be inserted into the receptacle  15  of the ejector unit  13  ( FIG. 6 ), since the length of the synchronizing bar  14  is greater than the distance between the insertion regions  20  of the receptacles  15  of the ejector units  12 ,  13 . 
         [0053]    In order for the synchronizing bar  14  to be able to be inserted into the receptacle  15  of the ejector unit  13  that is disposed opposite, the synchronizing bar  14  in a further fitting step in the insertion direction B is pushed into the receptacle  15  of the ejector unit  12 , counter to a spring force of the coil spring  16 . Herein, the synchronizing bar  14  is pushed by a technician so far into the receptacle  15  of the ejector unit  12  until the synchronizing bar  14  by way of the opposite end  32  thereof may be inserted into the opposite receptacle  15  of the ejector unit  13  ( FIGS. 7, 8 ). 
         [0054]    If and when the synchronizing bar  14  has been pushed so far into the ejector unit  12  that the former by way of the opposite end  32  thereof may be inserted into the ejector unit  13 , the technician guides the end  32  toward the insertion region  20  of the ejector unit  13 , inserting the synchronizing bar  14  by way of the end  32  into the receptacle  15  of the ejector unit  13 . The technician is supported herein by the spring force of the coil spring  16  of the ejector unit  12 , in that the spring force by way of the guide element  17  urges the synchronizing bar  14  in the insertion direction C of the ejector unit  13  ( FIGS. 9, 10 ). 
         [0055]    In the final fitting step, the technician lets go of the synchronizing bar  14 , the latter being centered in the functional position thereof between the ejector units  12  and  13  by the two coil springs of the ejector units  12  and  13  ( FIGS. 11, 12 ). 
       LIST OF REFERENCE SIGNS 
       [0000]    
       
           1  Item of furniture 
           2  Furniture base unit 
           3  Drawer 
           4 ,  5  Pull-out guide 
           6  Front 
           7 ,  8  Side wall 
           9  Rear wall 
           10  Bottom 
           11  Ejector assembly 
           12 ,  13  Ejector unit 
           14  Synchronizing bar 
           15  Receptacle 
           16  Coil spring 
           17  Guide element 
           18  Transmission member 
           19  Guide member 
           20  Region 
           21 ,  22  Lip 
           23  End 
           24  Detent 
           25  Coupling member 
           26  External contour 
           27  Coupling element 
           28  Core 
           29  Retaining element 
           30  Lower sides 
           31 ,  32  End

Technology Classification (CPC): 0