DE202007006302U1 - Furniture and device for ejecting a furniture part - Google Patents

Abstract

contraption for ejection a furniture part (3), which is movably received on a stationary furniture part (2) is over with one a drive unit drivable ejection lever (7) attached to one of the two furniture components attached and with the other furniture part temporarily in contact to eject the movable furniture part (3), and the ejection lever (7) has a contact area (7a), within which the contact between the ejection lever (7) and the other furniture part takes place, the ejection lever (7) is drivable with the intention that during an ejection process the contact between the ejection lever (7) and the other furniture part repealed is characterized in that the abutment region (7a) a bend having.

Description

The The invention relates to a device according to the preamble of the claim 1 and a piece of furniture Claim 12.

State of the art

It are already devices for ejecting one at a fixed furniture part movably received furniture part known. Ejecting can over for example a drivable with a drive unit in particular pivotable ejection lever, the one on the two furniture parts attached and with the other furniture part temporarily is in contact to eject the movable furniture part. The movable furniture part can a drawer, door, Be flap or other movable furniture parts. The ejection lever comes when ejecting within one at the ejector lever existing contact area with the other furniture part in contact, the Contact after ejecting will be annulled.

at the design of the ejector must various requirements are taken into account. On the one hand should the ejector preferably cost-effective, be robust and space-saving. On the other hand, the aim is comparable exhaust motions of the movable furniture part to enable in particular, even if with this e.g. through a changeable Loading each strongly different masses must be moved.

Purpose and advantages of the invention

task The present invention is a device of the initially with regard to a technical and economic Realization to improve or a piece of furniture with a corresponding Device available to deliver.

These Task is by the claims 1, 2, 9 and 12 solved.

The dependent claims are directed to advantageous developments of the invention.

The Invention goes first from a device for ejecting a furniture part, which is fixed to a furniture part is movably received, with a drivable via a drive unit Ejector lever, the one on the two furniture parts attached and with the other furniture part temporarily is in contact to eject the movable furniture part, and the ejection lever has an investment area within which the contact between the ejection lever and the other furniture part takes place, the ejection lever is drivable, with the intention that during an ejection process the contact between the ejection lever and the other furniture part will be annulled. An essential aspect of the invention is that the contact area has a bend. In this way can over the design of the contact area on the ejection lever or by a corresponding shaping the ejection lever a desired course the ejection movement or an advantageous ejection characteristic will be realized. In particular, this comes with the ejection process with a relatively simple modified ejection lever different effective lever lengths to the effect. Different effective lever lengths also cause different personnel or moments during the ejection process from the ejection lever transferred to the other furniture part can be. This may be particularly advantageous if, for example, at the beginning the ejection movement comparatively large personnel or moments are necessary to move the movable furniture part, in particular to a standstill position in the closed state of the movable furniture part to overcome. there is an effective lever length the ejection lever crucial, that of the lever geometry or the type of kinking dependent is. Thus, in a first phase of the ejection process, a shorter lever length realized be as to a later Time of the ejection process. Due to the kinking in the contact area is at the beginning of the ejection movement There also the contact to the other furniture part take place. Thereby let forces be or moments in an advantageous manner for a discharge effect of ejector lever Set up on the moving furniture part. Furthermore, with a bend in the investment area a special Space-saving storage of the ejection lever are possible. The bend may describe a comparatively shallow angle of bending, e.g. on the side facing away from the investment area between 120 and 170 Angles or even lower.

Another essential aspect of the invention is that the ejection lever is designed to deform elastically during the ejection process. By elastic bending at least of parts of the ejection lever, in particular of the contact area, under load during the ejection process, a possibility can be provided to influence the ejection process, in particular the duration and size of the forces or moments that can be transmitted by the ejection lever. The course of the ejection process can thereby be adapted to different conditions, for example to different masses to be moved during ejection. This can be achieved with a spring-trained ejection lever, as this makes possible correspondingly different ejection effects depending on the strength and temporal change of the elastic deformation during ejection. Depending on the size of the be In this case, the ratio of the portions of the driven path and the non-driven follower path may be different after the end of the drive action in order to always obtain approximately the same overall discharge path. About the deliberately established, reproducible elasticity of the ejection lever, which has a noticeable effect on the ejection process, so to speak can implement a self-adjusting to different loads or other variable boundary conditions of the movable furniture part ejection effect.

The from the elasticity the ejection lever dependent characteristic the ejection process can for example by different material properties the elastically effective part of the ejection lever or a corresponding Shaping or positioning of the elastically deforming areas the ejection lever to be influenced.

Further it is proposed that the ejection lever is designed such that one by the elastic deformation during the ejection process caused maximum change in position an end of an elastic part of the ejection lever in relation to Length of the elastic part of the ejection lever is at least 2%, especially at least 5%. If, for example, a bend around an attachment point elastic part of the ejection lever considered, is under the length the elastic part of the ejection lever is approximately the distance from the attachment point to a distance from the attachment point To understand the end of the elastic part of the ejection lever. With a as suggested elastic deformation of the entire ejection lever or elastically behaving portions of the ejection lever can be particularly reliable a desired one Self-adjustment of the ejection processes achieved become dependent is of different boundary conditions such as e.g. the size of the moving masses.

advantageously, is the ejector lever designed as an articulated lever with a bend in the contact area, through which two substantially straight sections of the abutment area are aligned at an angle to each other. Under a bend is In particular, according to the invention, no curved course of the contact area understood or should such a person just avoided. By two in the bending region substantially straight sections to each other are aligned at an angle, the ejection lever for a relatively simple and be designed to save space. Optionally, for reasons of space itself the kink from a straight ejector lever, in particular in a starting position is straight, only with the beginning of the ejection process or a pivoting of the ejection lever, for example when the kink is articulated.

With a bend an exact change an effective lever length during one ejecting motion realize. For example, a discharge lever with a bend In the investment area, a first effective lever length in a first phase of ejecting motion and another effective lever length in the further course of the ejection movement the ejection lever provide.

It is moreover preferred that the ejection lever one at the ejection process essentially rigidly behaving part and one in the ejection process elastically deforming part, which in particular the contact area comprises. The ejection lever This makes it particularly easy to adapt to different desired output characteristics become. By the vote of the elastically deforming part and a substantially rigid part of the ejection lever can distinctly different forces acting on the ejection process from the ejector lever on the other furniture part be set up. Furthermore let yourself an automatic adaptation the ejection lever during the ejection process to reach. It is also possible, for example, on a rigid body of the the ejection lever depending on the desired elasticity different elastically deforming parts of the ejection lever to install. The two parts can be separate components or molded in one piece.

Further It is suggested that the abutment area of the ejection lever is formed repeatedly bent. By a multiple bend or a polygonal shape of the investment area may progressively with Lever movement during the ejection process a several times extending effective lever length allows become.

Especially It is advantageous that a bend in the investment area rigid is designed so that during the ejection process no changes a bend angle formed by the respective bend takes place. Thus, the ejection lever in particular easy be produced or relatively stable.

Alternatively, it may be advantageous that a bend in the contact area is designed to be elastically variable under load. In particular, the bend in the contact area can be designed to be elastically variable under load so that a change in a bending angle formed by the bending in question can take place during the ejection process. The change in the Abknickwinkels can for example be done by one or more kinks are articulated. Thus, for example, in a waiting position before or after an ejection process, the ejection lever also stretch completely, which is relatively space-saving. In addition, when a limit load on the ejection lever is exceeded If necessary, give in at the bend points, which can prevent damage.

One Another essential aspect of the invention is that the ejector lever is designed to be in the manner of a toggle mechanism ejecting operation to enable. With a toggle mechanism can be especially at apex Toggle angle high forces transferred to a moving furniture part. Furthermore a toggle mechanism can be particularly space-saving in a stretched Position to be accommodated.

Especially it is advantageous that the ejection lever on one of the furniture parts attached toggle lever in a head portion angled to each other Legs, wherein during the ejection process, the head portion directly on the other furniture part comes to the plant. In this way, a particularly effective power transmission during the ejection process on the other furniture part realize.

It is moreover advantageous that an overload protection for the Knuckle mechanism is provided, through which an evasive movement of the the ejection lever against one for the ejection process necessary movement possible is. For unforeseen or short-term strong mechanical loads on the furniture to be moved against a direction of ejection can a damage be avoided on toggle mechanism or on a furniture part.

Of Furthermore, the invention comprises an ejection lever, which in particular is telescopic. So it is conceivable that the lever is driven movable is and has mutually rotatable and telescopic sections. Via e.g. a rotation guide or a coiled groove with engagement portions running therein a telescoping of the lever can be made possible. For example, a ejector lever several cup-like nested ejection lever elements includes, which telescope each other by rotation or compact be accommodated or extendable.

The Invention also relates to a piece of furniture with a movable furniture part, that on a fixed piece of furniture is movably received, wherein a device as explained above is provided. This can be the advantages shown for a corresponding furniture part achieve.

Out security it is necessary that in case of a false start of the system, its movable furniture part e.g. a drawer is, does not extend or overload the extension of the drawer is interrupted. As with such Mistakes in most cases from an error in the control is allowed, the corresponding safety-related intervention not by a faulty control respectively. This is achieved by the fact that the lever is formed in two parts is and the two parts are connected with a hinge. In the This torque occurring torques are preferably via a Spring mechanically secured. A spring has the advantage that the intended spring force only has to be reached for a short time, to change the profile shape of the spring so that of a lot softer leaf spring profile the other torques are no longer supported and the cycle of the cam can be completed easily. When the system moves to the home position and top dead center is exceeded is, the spring can by eliminating the spring load push the two lever parts back to their original position.

Basically it advantageous in the proposed arrangement that regardless of the method of attachment of the movable furniture part on the stationary furniture part the ejection device universally attachable or this is easy to retrofit. In particular, no need additional Arrangements for locking the movable furniture part in the closed position be provided because the movable furniture part via conventional locks, e.g. an automatic retraction can be kept in the closed position.

Under furniture parts are primarily furniture parts for kitchen and home furniture to understand, however may be the expression furniture parts in the context of the invention also on drawers, doors and flaps on others Facilities extend, for example, to a drawer on one Tool cabinet or cart.

figure description

Based Figures are further details and features of the invention explained with reference to highly schematically illustrated embodiments. In the figures are for corresponding components of different embodiments partially the same reference numerals used.

in the Individual shows

1 a schematically illustrated furniture with drawer in perspective view,

2 according to the furniture 1 omitting individual parts, the drawer being shown open,

3 to 6 a view from the top of the furniture according to 1 without a top, where the Drawer in different positions before, during and after an ejection process is shown,

7a to 7c a full perspective view, a partial sectional view and a partial front view of the in the 3 to 6 inserted and attached to a receptacle ejector for ejecting the drawer with fully swung back ejector lever,

8a to 8c the arrangement according to the 7a to 7c in a first pivoting position of the ejection lever in a further perspective full view, a partial sectional and a partial front view, wherein in 8a a housing section of the ejection device is omitted,

8d and 8e the ejection device according to the 7a to 8c in a second pivoting position of the ejection lever in a partial sectional and a partial front view,

9 a schematic perspective view of a control disk of the ejection device according to the 7a to 8e .

10 a further embodiment of an ejection device according to the invention,

11 a further embodiment of an ejection device according to the invention,

12 a further perspective embodiment of an ejection device according to the invention omitting a front housing,

13 to 15 the ejection device according to 12 from above in a swung back and two different widely pivoted positions of the ejection lever,

16 and 17 a drawer and ejection lever of a further ejection device, which are shown only as a schematic diagram, wherein the arrangement is shown with the drawer closed and during the ejection process,

18 a drawer with an alternative ejection lever according to the invention as shown 16 .

19 to 23b a further alternative ejection device according to the invention in different positions in a perspective view, in front or in top view,

24 to 26 an ejection lever according to the invention in a perspective view and from the side with the omission of individual parts,

27 a to the ejection lever from the 24 to 26 very similar further ejection lever according to the invention, which is shown cut away from the side during the ejection process,

28 and 29 the ejection lever according to 27 in an activated overload protection in side view in full view and with omission of parts or cut,

30 to 33 a perspective obliquely from above shown furniture, which is partially cut away or shown with parts omitted with a highly schematic ejection device in three different furniture states,

34 34a the furniture according to the view 31 and in an enlarged detail view in a loaded furniture condition,

35 35a the furniture according to the view 32 and in an enlarged detail view in a further state of furniture and

36 and 37 in each case a schematic diagram of different inventive ejection devices when ejecting a drawer in side view.

The 1 and 2 show a furniture 1 with a body 2 and one in the corpus 2 via a pull-out guide 4 sliding drawer 3 , The pull-out guide 4 includes in particular a per se known full extension with a drawer-side drawer rail, a body-side fixed rail and a movably received between these middle rail. In 1 there is the drawer 3 in a closed position, in which between the body 2 and an inside of a front end 3a the drawer 3 a frontal gap 5 is formed by a few millimeters, for example. The front end 3a has no handle in the example shown, but also a handle may be present.

The front gap serves primarily by pressing on the front end 3a for a discharge operation to enable a trigger command, wherein the drawer 3 towards the corpus 2 over a few millimeters, reducing the front gap 5 can be moved. A triggered ejection process is with an ejection device according to the invention 6 executed. Is in the in 1 state shown the closed drawer 3 pressed something, a movement of the drawer can be registered, for example, corresponding sensors, not shown, whereby a discharge operation by means of the ejection device 6 is triggered.

2 shows the fully opened thrust drawer 3 in the body 2 shown without a side wall, back wall and shell. An ejector lever 7 the ejection device 6 is shown in a maximum pivoted position. The ejection lever 7 For example, with respect to the rear wall of the furniture body, not shown 2 be pivoted about a maximum pivot angle of about 80 to almost 90 degrees or more. By pivoting the ejection lever 7 this comes outside on a back wall 3b the drawer 3 to the plant and can the drawer 3 push away from a closed position in particular by a distance of, for example, about 30 to 70 mm from the closed position according to 1 move in the opening direction. For this purpose, the ejection lever is covered by a drive unit concealed by a housing part 7 from an applied or folded back position into the in 2 shown pivoting driven driven. After that, a contact between the back wall 3b and the ejection lever 7 lifted and the moving drawer 3 can move on for a while. Then preferably when the drawer 3 still a piece moves freely or as soon as the contact between the back wall 3b and the ejection lever 7 is canceled, in particular by means of the drive unit of the ejection lever 7 pivoted back into the folded-back position to be ready for a next pivoting or ejecting operation. With applied position of the ejection lever 7 (not shown) whose longitudinal axis is approximately parallel to the drawer rear wall 3b or to trusses 8a . 8b aligned.

About the two traverses 8a and 8b is the ejector 6 releasably clipped. The two traverses 8a . 8b are even in receiving flanges 9a and 9b taken on the side walls of the furniture body 2 are attached.

The ejection device can also be attached to the drawer 3 be attached and moved with this, then the ejection lever 7 at least for ejecting into contact, for example, with the rear wall of the body 2 reach.

The ejection lever 7 is in 2 shown in its maximum pivoted position so that it is clearly visible, with the drawer fully open 3 the ejection lever 7 is usually already in its zurückgeschwenkten position or in its rest position.

In the 3 to 6 is a piece of furniture 1 from above, omitting a top of the corpus 2 illustrated, the one to the ejection device according to 2 modified ejection device 6 having. The furniture body 2 shows a back wall 2a , a right side wall 2 B and a left sidewall 2c , There are also between the side walls 2 B and 2c running trusses 8a and 8b according to 2 housed, where the ejector 6 is attached. In 3 when the drawer is completely closed 3 is the ejector lever 7 stretched or straight in its shape and in a zurückgeschwenkten rest position. The ejection device 6 or the traverses 8a . 8b advantageously require a comparatively small space, especially in the depth of the furniture 1 ,

The 4 and 5 show the ejection lever 7 in a bent shape or with a bend, wherein a front angled portion of the ejection lever 7 on a back wall 3b the drawer 3 flat ( 4 ) or selectively ( 5 ) may be present. In 5 is the ejector lever 7 a little bit further than in 4 , wherein the pivoting movement of the ejection lever 7 done by a drive unit, not shown. By the pivoting movement of the ejection lever 7 and its attachment to the rear wall 3b the drawer 3 becomes the drawer 3 from the in 3 shown closed position moves a little way in the opening direction. The drawer 3 is due to the movement of the ejection lever 7 not up to the fully open position according to 6 emotional. Rather, the drawer 3 after the ejection movement by ejection lever 7 brought into a partially open position, from the example of a person's drawer 3 can open or close again by hand. The movement process could also be optimized so that the drawer 3 trailing only by the ejection process to the full or nearly complete open position.

After the ejection process, the ejection lever 7 swung back to its resting position immediately or shortly thereafter, like 6 clarified. Due to the articulated Abknickmöglichkeit the ejection lever of the ejection process is angularly forming ejection lever 7 in its rest position according to 3 respectively. 6 again fully stretched or space-saving in the body 2 accommodated.

The in the 3 to 6 ejector shown 6 with the trusses 8a . 8b and receiving flanges 9a . 9b is in detail in the 7a to 8e shown. The 7a respectively. 8a show in perspective the ejection device 6 , the trusses 8a . 8b and the receiving flanges 9a and 9b in a rest position of the ejection lever 7 (please refer 7a ) and in a partially pivoted position according to 8a , 7b shows a section along the line AA 7c , According to shows 8b a sectional view taken along the section line BB 8c respectively. 8d shows a sectional view through the arrangement according to 8b along the line CC in 8e , The pivoting movement of the ejection lever 7 is through the interaction of an Ab support pin 10 at the ejection lever 7 with a guideway 11a a rotating steering wheel 11 reached. This is the steering wheel 11 via a non-explained drive unit, in particular with an electric motor, driven in rotation.

9 shows the steering wheel 11 strongly schematized with the guideway 11a in perspective view.

An angle α formed by the bend ( 8b ) on one side of the ejection lever 7 which faces away from a side in contact with a drawer rear wall may be a value slightly less than 180 degrees. In principle, different total lever lengths or positions of the bend point along the ejection lever 7 possible, whereby a driven ejection movement or an associated total ejection path can be determined. About the design of the guideway 11a can the course of the ejection movement over time or over a rotation angle of the steering wheel 11 be determined.

Two further embodiments of the ejection device 6 are in 10 and 11 illustrated, wherein the ejection device according to 11 only by a second drive unit or a second electric motor 13b , for a transmission 14 For example, in order to provide a higher drive power for the ejection operation of the ejection device according to 10 different.

The ejection lever 7 is on a contact with a furniture section during the ejection process in contact contact 7a formed straight over almost its entire length and has a rounded portion in a front end portion.

The ejection device 6 according to 10 has a base frame 12 on, on which a drive unit in the form of an electric motor 13a with a gear 14 is included. The gear 14 serves to transmit a driving effect on the steering wheel 11 in that with a co-operating with the gear outer teeth 11b is provided. Radially further inside at the wheel 11 is a closed guideway 11a educated. The guideway 11a serves to guide or support the ejection lever 7 over a rigidly angled support foot 15 , which end with a rotatably mounted roller 15a is provided. From the prior art basically straight ejection lever are known. About the role 15a can the outrigger 15 along the during the rotation of the steering wheel 11 spatially ramp-like rising and sloping guideway 11a unwind, wherein the ejection lever is pivoted about its pivot axis S and thereby the ejection process by pressing against the rear wall 3b the drawer 3 causes. In the 10 and 11 is a front side covering housing part not shown, on which the pivotal mounting of the ejection lever is realized about the axis S.

Individual steps of the overall process are in the 12 to 19 shown.

In 11 is an example of the guideway 11a explained, wherein upon rotation of the steering wheel 11 clockwise from the maximum pivoting position of the ejection lever shown 7 successively the sections A, B, C and D of the guideway 11a as support surface for the support roller 15 be effective. In this direction of rotation about the axis of rotation R of the steering wheel 11 Thus, during a revolution with section A over an angle of about 120 degrees a uniformly sloping course, with section B over an angle of about 100 degrees a consistently flat course with pivoted ejection lever 7 , with section C over an angle of about 120 degrees, a uniformly increasing course and with section D over an angle of about 20 degrees again a consistently flat course effective. The number of different sections, their gradients and their angular ranges can be specified individually depending on the guideway or inserted steering wheel. The steering wheel can be easily replaceable for a corresponding change in the pivoting characteristic.

As an overload protection can be achieved at a particular specifiable resistance to the ejection movement or the ejection lever 7 the direction of rotation of the steering wheel 11 be reversed, for example, if a person is in front of the movable furniture part or in which the painting process can be painted over.

The ejection device 6 is for attachment to trusses with, for example, 4 arranged outside in corners attachment clips 16 fitted.

12 shows a slightly more detailed view of an ejector 6 with a discharge lever 7 which is in a pivoted position or in a rest position. In 12 is a front housing portion of the ejection device 6 not shown, whereby parts for drive transmission from an electric motor 13a on the ejector lever 7 are visible. The individual components or construction elements are in 12 also only shown in a very schematic way.

About the electric motor 13a and the gearbox 14 becomes the ejector lever 7 to the rotation thing R swung back and forth. For transmitting the rotational movement to the ejection lever 7 are The gear 14 and further transmission or transmission elements 18 . 19 and 20 provided, with which one at the ejection lever 7 firmly positioned rotary shaft 21 is set in rotation. The ejection lever 7 is on its plant side, on which in the ejection process, a contact to a from the ejection lever 7 acted upon portion of a furniture part, with a straight portion G and a curved portion in the front or convex portion K provided, which is only in the region of the front half of the lever length of the ejection lever 7 is trained. In the ejection operation, a position of the pad may be substantially in the section K in the longitudinal direction of the ejection lever 7 move.

The 13 to 15 show the ejector 6 out 12 with the front housing section schematically from above, wherein 13 the state of the ejection lever 7 in a rest position or a basic position, and 14 respectively. 15 different pivoting positions of the ejection lever 7 when ejecting a drawer show, of which only a part of a drawer rear wall RW is indicated by a dashed line.

In 13 the drawer rear wall lies directly primarily on the straight section G ( 12 ) of the ejection lever 7 in particular, there is a contact between the drawer rear wall and the ejection lever 7 instead of. When swiveling the ejection lever 7 becomes a situation according to 14 achieved, whereas in particular the maximum pivoting state of the ejection lever 7 according to 15 the contact between the drawer rear wall RW and the ejection lever 7 is just canceled. The distance X _max according to 15 , between the position of the drawer rear wall RW in the position according to 13 and 15 , represents the driven ejection movement of the drawer. The subsequent movement of the drawer takes place without driving driven by running. In addition, after releasing the contact between the ejection lever 7 and the drawer rear wall of the ejector levers 7 again in his according to 13 pivoted back position shown. A contact point between the ejection lever 7 and the drawer rear wall RW upon ejection of the drawer travels along the portion K toward a front end of the ejection lever 7 ,

15 shows by way of example a maximum pivoting position of the ejection lever 7 , which can show, for example, a pivoting angle of about 80 to almost 90 degrees, in which case the pivoting angle just before canceling the contact between the ejection lever 7 and the drawer rear wall RW is about 70 degrees. The ejection device 6 according to the 13 to 15 For example, it may be mounted in the region of a carcass rear wall (not shown).

For the sensory detection of a movement state or a pivoting movement of the ejection lever 7 a sensor is provided with a sensor part 22a on a main body of the ejection device 6 and with another sensor part 22b at a correspondingly positioned portion of the ejection lever 7 , The sensor parts 22a . 22b may be in particular parts of a Hall sensor.

Another highly schematic embodiment of an ejection lever according to the invention 7 show the 16 and 17 , It also has a drawer 3 and parts of a carcass 2 shown in a very schematic way. The ejection lever 7 shown alone without further elements of the ejection device. The ejection lever 7 is elastically deformable during its pivoting movement under load (see 17 ). In this case, the ejection lever 7 with the drawer closed according to 16 over a section of a drawer rear wall 3b be aligned parallel thereto without or without significant elastic deformation. 17 shows a pivoting position of the ejection lever 7 in which the drawer 3 a little way from its closed position over the ejection lever 7 was moved. The ejection lever 7 In this case, it is elastically deformed or bent over sections, as a result of which bending can effectively change an effective lever length of the force conditions prevailing as a result of the drive effect.

18 corresponds to an arrangement according to 16 with an alternative ejection lever according to the invention 7 , which is bent several times. The ejection lever 7 according to 18 has, for example, three kinks, resulting in a polygonal safe running area on the ejection lever, with the drawer closed 3 partly from the drawer back wall 3b spaced ejection lever 7 , In this way, the rigid ejection lever 7 out 18 the advantages of the ejection lever according to 16 and 17 to reach the ejection. The rigid ejection lever 7 but requires a little more space in the rest position relative to the elastic ejection lever 7 ,

Another inventive ejection lever is based on 19 to 23b explained. In this case, a toggle mechanism is formed, through which a toggle lever 24 is provided for ejecting a movable furniture part. The toggle 24 is on a toggle assembly 23 added. The toggle lever arrangement 23 can, for example, via attachment jaws 25a . 25b be attached to a furniture part section, for example on opposite side walls of a furniture body in the rear area. The toggle 24 includes two toggle arms 26 and 27 , which are hinged together in their head area. The toggle leg 26 is pivotable with its head portion opposite the end of the mounting jaw 25a added. The other toggle leg 27 is accordingly on a movable carriage piece 28 also included swivel.

19 shows the toggle 24 in its almost fully extended position, eg when a drawer rear wall of a closed drawer is positioned in front of it. To the toggle 24 to pivot or to allow an ejection process, is an electric motor 13a on a recording piece 29 attached. Via a drive spindle 30 that from the electric motor 13a driven in two directions of rotation is rotatable, an intermediate piece 31 be moved led. For this purpose, the drive spindle passes through 30 the intermediate piece 31 in a bore having an internal thread with an external thread of the drive spindle 30 interacts.

20 shows the toggle 24 in pivoted ejection position. This is due to the driven movement of the intermediate piece 31 from the in 19 shown position in the 20 shown position allows. With the driven shifting of the intermediate piece 31 become two springs 32a . 32b shifted so that the sled piece 28 along two cross-profile traverses 33a . 33b between the two attachment jaws 25a . 25b spaced from one another, guided is moved. About the displacement of the springs 32a . 32b becomes the distance of the carriage piece 28 for attachment jaw 25a continuously reduced, reducing the toggle 24 infinitely articulated and angled in 20 shown position can be achieved so that a drawer can be ejected. The feathers 32a . 32b are so strong that they act as rigid elements during normal opening and no loss in the transmission of the drive effect to the toggle lever 24 comes and the springs 32a . 32b only spring when it comes to an overload situation, for example, as explained below.

For an overload protection of the toggle lever 24 or the toggle lever arrangement 23 with articulated angled knee lever legs 26 and 27 For example, if there is a force in the direction of arrow P1 (see 20 ) exceeds a limit, the springs are 32a . 32b For example, formed resiliently or overcoming a certain spring force so compressible that the in 21 shown overload position of the toggle lever 24 is reached. The drive spindle 30 or the electric motor 13a thus remain without damage or damage to the toggle lever arrangement 23 can be excluded. For overload protection at a fixed position of the intermediate piece 31 according to, for example 20 , becomes the sled piece 28 in the direction of the intermediate piece 31 moved, with the springs 32a . 32b shortened accordingly shortened. This allows the toggle leg 26 . 27 stretch again or becomes the knee lever 24 swung back or until possibly in its almost extended position according to 21 brought.

22a and 22b show a front view and a top view from above of the toggle lever assembly 23 according to 19 respectively. 23a and 23b the corresponding views to the toggle lever arrangement 23 according to 20 , especially the 22b and 23b show the comparatively small depth dimensions of the toggle lever assembly 23 transverse to the longitudinal extent of the toggle lever arrangement 23 , This allows a very compact or space-saving accommodation of the toggle lever arrangement 23 in a piece of furniture, especially in the depth of a furniture body. The longitudinal axes of the traverses 33a . 33b can be aligned in particular approximately parallel to a carcass back wall. Thus, for example, a drawer with a corresponding ejection device can be accommodated in a furniture body, without having to shorten the depth of the drawer appreciably. The with the toggle lever arrangement 23 achievable maximum driven ejection distance can correspond to a maximum of about the length of which the two toggle leg 26 . 27 demonstrate.

An alternative embodiment of the ejection device according to the invention with a bending lever 34 is based on the 24 to 29 explained in more detail, which is a perspective view obliquely from below on the bending lever 34 show, illustrating the bending lever 34 in 25 . 26 and 29 individual parts of the bending lever 34 are hidden. The bending lever 34 includes two opposite flat housing parts 35a . 35b that have connecting pins 36a to 36c are firmly positioned to each other. In addition, the bending lever 34 an elastic lever element 37 and a support foot 15 with an end rotatably received on it roll 15a on. The support foot 15 and the role 15a serve to the bending lever 34 to support on a guideway of a corresponding control, in the way, as for example in the 10 and 11 is explained in more detail.

The lever element 37 has at its front end a bent contact section 37a on, which can come into contact with the pivoting operation with a counter section, for example with a drawer rear wall. The lever element 37 is at his opposite the plant cut 37a positioned end bent back a piece and returned between the housing parts 35a . 35b added. At the bent end of the lever element 37 supports an angled tab 38 of the outrigger foot 15 from (see 25 and 26 ). Will now be in a discharge operation of the driven pivotable bending lever 34 for example, about a pivot axis, which, for example, with the longitudinal axis of the connecting pin 36a collapses, pivots, the in 27 shown arrangement of the bending lever 34 result. Here is the lever element 37 under load, for example, by being elastically deformed by abutment on a drawer rear wall to be ejected. The support foot 15 is approximately at right angles to the longitudinal edges of the housing parts 35a . 35b aligned. The strength of the bending of the lever element 37 depends on the on the lever element 37 acting force in the direction of bending or from the mass to be moved when ejecting the movable furniture part. 27 shows the bending of the lever element 37 for example, when ejecting a comparatively heavy furniture drawer (not shown).

In 28 is an overload protection of the bending lever 34 active, in which the pivotable between the housing parts 35a . 35b absorbed support foot 15 according to the position according to 27 is folded away. This will provide an effective support height from the outrigger 15 is provided abruptly significantly reduced and the load on the bending lever 34 or on the lever element 37 reduced effective force. For example, in the position according to 27 a support distance L1 between a support side of the roller 15a and an imaginary longitudinal axis of the housing parts 35a . 35b by folding away the support foot 15 be reduced to a support height L2. This is also the on the bending lever 34 be reduced.

To understand the overload protection according to 28 is in 29 when cut represented Leeming 37 and omitting the housing part 35a the interaction between the tab 38 and the bent end of the lever member 37 shown. When a maximum load on the lever element is exceeded 37 according to 27 can the outrigger 15 , which over the front end of its tab 38 at the bent end of the lever element 37 is set up by resilient yielding of the bent end of the lever member 37 according to 27 in the overload position of the outrigger 15 according to 28 and 29 kinking, with the buckling by the pivot bearing of the outrigger 15 around the longitudinal axis of the connecting pin 36c (please refer 24 ) is possible.

In the 30 to 32 is the bending lever 34 as part of a highly schematically shown ejection device 6 (not to scale and in particular omitting a drive unit) when installed in a piece of furniture 1 or a back wall 2a a furniture body 2 in cooperation with a movably received drawer 3 shown. For a better representation of the relationships is a front end 3a the drawer 3 shown only in a lower part.

The ejection device 6 is with a steering wheel as explained in more detail above 11 provided to the bending lever 34 to pivot. In 30 is the ejection process of the drawer 3 by means of the bending lever 34 shown, with the drawer 3 is unloaded or slightly loaded and the lever element 37 is not or almost not elastically deformed during ejection. The drawer 3 according to 30 is ejected driven forward according to arrow P2.

The 31 and 32 show a two-stage mechanism of action of the overload protection of the bending lever 34 , For example, on the drawer 3 when ejecting forward according to 30 applied a predetermined force from the outside in the direction of the arrow P3, so that the drawer 3 in the direction of P3 is moved toward the furniture body, in a first stage of the overload protection, the lever element 37 be bent back accordingly and the drawer moves something in the body 2 one ( 31 ), until the position off 32 with the drawer closed 3 is achieved under triggered second stage of the overload protection in addition to the curved lever element 37 bent support foot 15 , The drawer 3 is now in a closed position opposite the furniture body 2 , In the overload protection, the outrigger can 15 so to speak, from the guideway of the steering wheel 11 remove. Basically, the steering wheel 11 then be rotated to a position which corresponds to the closed position of the drawer 3 corresponds, causing the outrigger 15 can return to its approximately right angle angled position or the lever element 37 straight back is what 33 shows.

In 34 respectively. 34a is a situation of ejecting a heavy or heavily loaded drawer 3 by means of the bending lever 34 corresponding 30 shown. The heavy load is symbolized by a weight element in the drawer 3 , The bending lever 34 or the lever element 37 Bends elastically to the rear under the relatively heavy load of the drawer to be ejected 3 what's special in 34a becomes clear, which made an enlarged section 34 shows.

35 respectively. 35a with an enlargement cut out 35 shows the effective overload protection in the heavily loaded drawer 3 , In this case, an arrangement arises, which is identical to the arrangement according to 32 ,

In 36 and 37 is ever a schematic diagram of two different ejection devices 6 during the ejection process of a drawer 3 shown in side view, one being the drawer 3 receiving furniture body is not shown. The ejection devices 6 according to 36 and 37 are shown in a highly schematized or not to scale. The ejection devices 6 For example, be attached to a rear wall of the furniture body.

At the drawer 3 is at the back wall 3b an elastically deformable part 40 the ejection lever 7 on, with the elastic part 40 on a rigid part 39 the ejection lever 7 attacks. The ejection lever 7 is about a pivot axis S via a driven with a drive unit movable cam 42 pivotable. Other parts, in particular the ejection device 6 such as the drive unit are not shown. In the driven rotation of the cam disc 42 a roller is supported around the eccentrically positioned rotation axis R. 15a on a support foot 15 of the rigid part 39 on a circulating or closed guideway 42a from, through a radially outer narrow side of the cam 42 is formed. By the rotation of the cam disc 42 Here, for example, clockwise becomes the rigid part 39 the ejection lever 7 and with this an elastic part 40 the ejection lever 7 pivoted. The elastic part presses 40 against the back wall 3b the drawer 3 which is ejected by it. Due to the permanent support of the support foot 15 about the role 15a on rotating past it guided guide section or the guideway 42a the cam disk 42 can the pivoting movement of the ejection lever 7 be determined. In particular, a uniform Verschwenkverlauf the ejection lever 7 when pressed against the back wall 3b and a comparatively quick swinging back of the ejection lever 7 realized after the actual ejection process. The guideway 42a may be formed in a variety of ways, eg, as shown, consisting of two nearly straight sections joined together by two curved sections, with the axis of rotation R lying relatively far outboard, near a transition from a straight section to a curved section.

An alternative embodiment of an ejection lever in a position according to 36 shows 37 in which the ejection lever 7 in comparison to the ejection lever 36 is designed without elastic part and with an extension of the rigid part, wherein the ejection lever 7 a bend 41 is available. The transmission of a pivoting movement on the ejection lever 7 takes place accordingly 36 via a cam disc 42 , The bend 41 can be set up so that during the ejection process by the bend 41 formed kink angle does not change significantly or can change over a fixable measure, for example, elastic.

1

Furniture

2

corpus

2a

rear wall

2 B

Side wall

2c

Side wall

3

drawer

3a

front section

3b

rear wall

4

pull-out

5

front gap

6

ejector

7

ejector lever

7a

investment side

8a

traverse

8b

traverse

9a

receiving flange

9b

receiving flange

10

support pin

11

Steering wheel

11a

guideway

11b

external teeth

12

base frame

13a

electric motor

13b

electric motor

14

transmission

15

Outrigger

15a

role

16

mounting bracket

17

bearing element

18

transmission element

19

transmission element

20

transmission element

21

rotary shaft

22a

sensor part

22b

sensor part

23

Toggle arrangement

24

toggle

25a

Anbringbacke

25b

Anbringbacke

26

Toggle leg

27

Toggle leg

28

carriage component

29

spigot

30

drive spindle

31

connecting piece

32a

feather

32b

feather

33a

traverse

33b

traverse

34

bending lever

35a

housing part

35b

housing part

36a

connecting pin

36b

connecting pin

36c

connecting pin

37

lever member

37a

contact section

38

flap

39

rigid part

40

elastic part

41

kinking

42

cam

42a

guideway

Claims (12)

Device for ejecting a furniture part ( 3 ) attached to a fixed piece of furniture ( 2 ) is movably received, with a driven by a drive unit ejection lever ( 7 ) which is attached to one of the two furniture parts and with the other furniture part temporarily in contact to the movable furniture part ( 3 ), and the ejection lever ( 7 ) an investment area ( 7a ), within which the contact between the ejection lever ( 7 ) and the other furniture part, wherein the ejection lever ( 7 ) is intended, with the intention that during an ejection operation, the contact between the ejection lever ( 7 ) and the other furniture part is canceled, characterized in that the investment area ( 7a ) has a bend. Device according to the preamble of claim 1, in particular according to claim 1, characterized in that the ejection lever ( 7 . 34 ) is formed to deform elastically during the ejection process. Apparatus according to claim 1 or 2, characterized in that the ejection lever ( 7 . 34 ) is formed such that a change in position caused by the elastic deformation in the ejecting operation of an end of an elastic part of the ejection lever ( 7 . 34 ) in relation to the length of the elastic part of the ejection lever ( 34 ) is at least 2%, in particular 5%. Device according to one of the preceding claims, characterized in that the ejection lever ( 7 ) as an articulated lever with a bend in the system area ( 7a ) is formed, through which two substantially straight portions of the contact area are aligned at an angle to each other. Device according to one of the preceding claims, characterized in that the ejection lever ( 7 . 34 ) an essentially rigidly behaving part during the ejection process ( 39 ) and an elastically deforming part during the ejection process ( 37 . 40 ), which in particular comprises the contact area. Device according to one of the preceding claims, characterized characterized in that the abutment area of the ejection lever is formed repeatedly bent. Device according to one of the preceding claims, characterized characterized in that a bend in the contact area designed rigid is so during the ejection process no change a bend angle formed by the respective bend takes place. Device according to one of the preceding claims, characterized characterized in that a bend in the contact area under load elastically changeable is trained. Device according to the preamble of claim 1, in particular according to one of the preceding claims, characterized in that the ejection lever ( 24 ) is configured to allow a discharge operation in the manner of a toggle mechanism. Apparatus according to claim 9, characterized in that the ejection lever attached to one of the furniture parts knee lever ( 24 ) with legs bendable in a head section (US Pat. 26 . 27 ), wherein in the ejection process, the head portion comes directly to the other furniture part to the plant. Apparatus according to claim 9 or 10, characterized in that an overload protection for the toggle mechanism is provided, by which an evasive movement of the ejection lever ( 24 ) is possible against a movement necessary for the ejection process. Furniture ( 1 ) with a movable furniture part ( 3 ) attached to a fixed piece of furniture ( 2 ) is movably received, wherein a device according to one of the preceding claims is provided.