EP2139363B1 - Piece of furniture and device for ejecting a furniture part which is movably received on a stationary furniture part - Google Patents

Description

The invention relates to a device according to claim 1 and a furniture according to claim 10.

State of the art

Devices for ejecting a movable furniture part, in particular to a drawer, door, flap or the like from a closed position on a fixed furniture part driven over a partial distance to move out are already known. In this case, a movable furniture part of a piece of furniture can be moved out of a closed position, in particular by a comparatively short partial path of the entire possible movement path, in order subsequently to be moved on manually by a person. For example, it can thus be made possible comfortably in a furniture drawer to open the drawer without this must be set by hand from the closed position in motion, which can make a not inconsiderable effort especially in heavily loaded drawers. The drawer, which is driven out only slightly by the ejection, is subsequently much easier to move completely manually. In addition, movable furniture parts can be formed without an outside handle element be, because due to the ejection process, the movable furniture part can be used for example on a front end without any problems. An apparatus for ejecting a furniture part according to the preamble of claim 1 is known from the document WO 2006/017864 A1 known.

Purpose and advantages of the invention

Object of the present invention is to provide a corresponding piece of furniture or a device of the type mentioned, whereby an increased ease of use for furniture in a technically or economically advantageous manner is possible.

This object is achieved by the claims 1 and 10. In the dependent claims advantageous developments of the subject invention are shown.

The invention is initially based on a device for ejecting a furniture part, which is movably received on a stationary furniture part, with a driven by a drive unit ejection element which is provided on one of the furniture parts to eject the movable furniture part from a closed position, with the intention in that, during an ejection operation, the contact between the ejection element and the other furniture part is canceled and with a control unit for checking the drive unit, the control unit applying a definable closing position of the movable furniture part for controlling the drive unit. An essential aspect of the invention is that means are provided with which, after a closing operation of the movable furniture part, a standstill position reached thereby can be fixed as a new closed position and replaces the previously assumed closed position. Thus, a tripping characteristic always remain the same or a tripping operation can always be reliably recognized by a person as such. For the person becomes it also feels pleasant when the triggering process, for example, by pressing on a front of the respective movable furniture part always takes the same time or the movable furniture part when pressing always the same depth can be pressed up to a stop position, so this is recognized as a triggering operation.

This may be particularly relevant in furniture with so-called touch-latch arrangements. For this purpose, a small closing or front gap is formed between the movable furniture part in its closed position and the fixed furniture body, which results on an operating side of the movable furniture part and counter sections of the fixed furniture body, for example, with a few millimeters gap width. With the closing gap, it is possible to perform a triggering operation by pressing against the control or front side of the movable furniture part in the direction of the body. The triggering process is recognized as such and then responded accordingly by the control unit. The movable furniture part is then ejected driven by the ejection element. In order to avoid false triggering, for example, against the operator side, a pressure is exerted that does not correspond to a pressure at a deliberately desired triggering operation, it is necessary that the tripping characteristic for a tripping operation is always maintained. But it is of fundamental importance that the desired or underlying closed position known and corresponds to the real closing position.

However, if the real closing position deviates from the closing position used in the control unit, malfunctions or other unexpected ejection characteristics may occur. For example, it is then not excluded that during the triggering process a covered trip distance or a time duration of the tripping operation, which the movable furniture part at Tripping operation until reaching a stop position shows, as "correct" tripping recognizes. For the distinction between "right" and "wrong", in particular the trip path and the tripping time of the tripping process are of importance.

A distinction is therefore necessary in order to avoid that, for example, a comparatively longer counterpressure can occur against the operating side of the movable furniture part, for example when leaning against the movable furniture part, or e.g. an accidental streaking of the furniture front when passing it, is understood as a trigger command.

With the arrangement according to the invention, conditions which can have a negative effect on the tripping characteristic can be taken into account and corrected. It is inventively possible, for example, that a closing position that changes due to unavoidable wear does not adversely affect the tripping characteristic over the life of the ejection device. In this way, for example, changes in the closed position over time can be taken into account, which are in particular only in the millimeter range, possibly only a few fractions of a millimeter, or lie in the tenth of a millimeter range. Without the means according to the invention, the triggering path of the movable furniture part or the triggering time would change over time. The detection of the triggering process could then not work exactly.

Advantageously, the means are configured to define a new closed position when the movable furniture part after the closing operation, a standstill position within a predeterminable area in the vicinity of a mechanical closing stop of the movable furniture part occupies. This can be achieved that only such standstill positions of the movable furniture part can be used as a new closing position when the movable furniture part is really closed. In the close range means in particular a few centimeters or millimeters spaced from the mechanical closing stop. This can be avoided, for example, that a standstill position of the movable furniture part that remains at any point between a closed position and a fully open position is defined as a new closing position, just because the movable furniture part is no longer moving. This condition can occur if, for example, when moving the movable furniture part by tilting an object between the movable and the stationary furniture part or another adjacent section, the movable furniture part is mechanically blocked in its movement and stops or, for example, when the user does not want to completely close the movable furniture part.

It is also preferred that the means are adapted to determine the new closed position, if within a predefined period from the time of reaching the standstill position, no substantial movement of the movable furniture part takes place. Thus, certain definable conditions for the redefinition of the closing or zero position can be ignored, for example, when the closing operation short periods occur without movement of the movable furniture part in which the movable furniture part for a moment assumes a standstill position, but the closed position still not completely reached, but finally reached after the short interruption.

Preferably, the means are designed such that they do not define a new closed position if, over a predefined period of time, from the time of reaching the Standstill position calculated, no significant movement of the movable furniture part takes place more. Thus, for example, in the case of a longer leaning on the movable furniture part by a person or an object, wherein the movable furniture part is moved to the mechanical closing stop and remains there, it can be avoided that this action is defined as a new closing position. This can be ruled out that the new closing position corresponds to the mechanical stop, whereas otherwise a trigger command for the movable furniture part would no longer be possible in touch-latch arrangements, since a counter-pressing against the movable furniture part causes no release movement and thus no opening movement can be triggered , Moreover, it can basically be ruled out to define a new closed position in the mechanical stop position, so that a trigger action always remains possible, in particular in the case of touch-latch arrangements.

It is further proposed that the means comprise sensor means for detecting a movement state of the movable furniture part. With the sensor means, it is possible to detect a movement or a stilltand of the movable furniture part relative to the stationary furniture part or to provide information about the control unit. Modern sensor means work precisely, are robust and space-saving applicable or are compatible to the control unit or to correspondingly used computing units.

Preferably, the sensor means are adapted to detect the state of movement of the movable furniture part indirectly via a sensory detection of the movement of the ejection element. This makes use of the fact that the closing operation within a short range before reaching a mechanical closing stop, so states that come into consideration for the determination of the new closed position, the movable furniture part with the ejection element in contact is.

The ejection element can generally have two positions in its retracted or pivoted-back position. A first rest position corresponds to a waiting position when the movable furniture part is open or when closing. A further rest position results when the ejection element comes into contact with the closing movable furniture part, wherein the ejection element can yield slightly from its first rest position in its position, in particular by a resilient mounting of the ejection element, and it comes to the second rest position of the ejection element, said this is used to determine the new zero or closed position.

In this case, the ejection element can behave with high agreement or very precisely as the movable furniture part or is in particular moved in accordance with similar or is exactly silent, even if the movable furniture part is stationary. On the sensory detection of the movement of the ejection element, it is therefore possible to determine the movement state of the movable furniture part accurately and reliably indirectly.

It is further proposed that the sensor means comprise a sensor with two sensor parts, of which one sensor part is arranged on a fixedly positioned part of the ejection device or on the stationary furniture part and the other sensor part on the ejection element or on the movable furniture part. This allows flexible positionable placement of the sensor means at preferred locations on the furniture or the ejection device. In particular, the sensor means can be positioned where particularly precise or even the slightest movements of the movable furniture part can be detected directly or indirectly.

Particularly preferably, the sensor means comprise a Hall sensor. A Hall sensor advantageously allows a sensory detection in a relevant spatial area, which is helpful especially in determining the closed position. The Hall sensor consists for example of two sensor parts, of which a sensor part in particular fixed and the other sensor part is movably mounted, for example on the movable furniture part or on the ejection element. The sensor means may also work differently, in particular optical, inductive, capacitive, magnetic, with infrared or with an incremental encoder and the like.

It is further proposed that the sensor means are designed to supply information about a sensory detected movement state of the movable furniture part of the control unit. Thus, information about the state of motion of the movable furniture part of the higher-level control unit can be supplied based on the sensory detection. In the control unit, this information can then be processed accordingly, in particular to define the new closed position. However, the final determination of the new closing position in the control unit takes place if, as explained above, corresponding specifications are fulfilled, e.g. temporal and / or spatial requirements with regard to the triggering or closing process.

The invention also relates to a piece of furniture having a furniture part which is movable relative to a stationary furniture part, the furniture having one of the devices described above. This can be realized in the furniture already mentioned advantages, especially on a piece of furniture with respect to fixedly positioned sections movable drawers, doors, flaps, swivel, sliding or pull-outs and the like.

Basically, it is advantageous in the proposed arrangement that regardless of the method of attachment of the movable furniture part on the fixed furniture part, the ejection device universally attachable or this is easy to retrofit. In particular, there is no need to provide additional provisions for locking the movable furniture part in the closed position, since the movable furniture part can be locked by conventional means, 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, the term furniture parts in the context of the invention may also extend to drawers, doors and flaps at other facilities, such as a drawer on a tool cabinet or car.

figure description

With reference to the figures, further details and features of the invention with reference to schematically illustrated embodiments are explained in detail. In the figures, corresponding parts of different embodiments are sometimes used the same reference numerals.

Figur 1

ein schematisch dargestelltes Möbel mit Schublade in perspektivischer Ansicht,

Figur 2

das Möbel gemäß Figur 1 unter Weglassung von einzelnen Teilen, wobei die Schublade geöffnet dargestellt ist,

Figur 3 bis Figur 6

eine Ansicht von oben auf das Möbel gemäß Figur 1 ohne ein Oberteil, wobei die Schublade in unterschiedlichen Stellungen vor, während und nach einem Ausstoßvorgang dargestellt ist,

Figur 7

ein perspektivisches Ausführungsbeispiel einer erfindungsgemäßen Ausstoßvorrichtung unter Weglassung eines Frontgehäuses,

Figur 8

die Ausstoßvorrichtung aus Figur 7 in Frontansicht,

Figur 9

eine Teil-Schnittdarstellung der Ausstoßvorrichtung aus Figur 8 gemäß der Linie A-A aus Figur 8 und

Figur 10

ein Schaubild in einem zweiachsigen Diagramm zur Veranschaulichung einer Festlegung einer neuen Schließposition bei zwei unterschiedlichen Schließvorgängen.

In detail shows:

FIG. 1

a schematically illustrated furniture with drawer in perspective view,

FIG. 2

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

FIG. 3 to FIG. 6

a view from the top of the furniture according to FIG. 1 without a top, the drawer being shown in different positions before, during and after an ejection process,

FIG. 7

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

FIG. 8

the ejection device FIG. 7 in front view,

FIG. 9

a partial cross-sectional view of the ejection device FIG. 8 according to the line AA FIG. 8 and

FIG. 10

a diagram in a biaxial diagram illustrating a determination of a new closing position in two different closing operations.

The FIGS. 1 and 2 show a furniture 1 with a body 2 and a 2 movable in the body 2 via a pull-out drawer 3. The pull-4 includes in particular a known full extension with a drawer-side drawer rail, a body-side fixed rail and a movable between them middle rail. In FIG. 1 is the drawer 3 in a closed position, in which between the body 2 and an inner side of a front section 3a of the drawer 3, a front gap 5 is formed, for example, a few millimeters. The front section 3a has no handle in the example shown, but also a handle may be present.

The front gap serves primarily to enable a release command by pressing on the front part 3a for a discharge operation, in which the drawer 3 can be moved in the direction of the body 2 over a few millimeters, reducing the front gap 5. A triggered ejection process is carried out with an ejection device 6 according to the invention. Is in the in FIG. 1 As shown, the closed drawer 3 is pressed slightly, a movement of the drawer can be registered via, for example, corresponding sensors, not shown, whereby an ejection process by means of the ejector 6 is triggered.

FIG. 2 shows the fully opened drawer 3 in the body 2, which is shown without a side wall, rear wall and upper part. An ejection lever 7 of the ejector 6 is shown in a maximum pivoted position. The ejection lever 7 can be pivoted, for example, with respect to the rear wall of the furniture body 2, not shown, by a maximum pivoting angle of approximately 80 to approximately 90 degrees or more. By pivoting the ejection lever 7 this comes to rest on the outside of a rear wall 3b of the drawer 3 and can push the drawer 3 from a closed position in particular by a distance of, for example, about 30 to 70 mm from the closed position according to FIG. 1 move in the opening direction. For this purpose, the discharge lever 7 is moved from an applied or folded-back position into the drive unit concealed by a housing section FIG. 2 shown pivoting driven driven. Thereafter, a contact between the rear wall 3b and the ejection lever 7 is released and the moving drawer 3 can move on a bit freely. Subsequently, or preferably, when the drawer moves a bit freely or as soon as the contact between the rear wall 3b and ejection lever 7 is gone is in particular by means of the drive unit of the ejection lever 7 back into the pivoted back position to be ready for a next pivoting or ejection operation. When applied position of the ejection lever 7 (not shown) whose longitudinal axis is aligned approximately parallel to the drawer rear wall 3b and to trusses 8a, 8b.

About the two trusses 8a and 8b, the ejector 6 is releasably clipped. The two trusses 8a, 8b are themselves accommodated in receiving flanges 9a and 9b, which are fastened to the side walls of the furniture body 2.

The ejection device can also be attached to the drawer 3 and moved along with it, then the ejection lever 7 can at least be ejected into contact e.g. get to the back wall of the body 2.

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

In the FIGS. 3 to 6 a furniture 1 is shown from above with omission of an upper side of the body 2, the one to the ejection device according to FIG. 2 modified ejection device 6 has. The furniture body 2 shows a rear wall 2a, a right side wall 2b and a left side wall 2c. In addition, between the side walls 2b and 2c extending trusses 8a and 8b according to FIG. 2 housed, where the ejector 6 is attached. In FIG. 3 when completely closed drawer 3, the ejection lever 7 is stretched or straight in its shape and in a swung-back rest position. The ejection device 6 and the trusses 8a, 8b advantageously require a comparatively small space especially in the depth of the furniture 1.

The FIGS. 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 rear wall 3b of the drawer 3 area ( FIG. 4 ) or selectively ( FIG. 5 ) may be present. In FIG. 5 the ejection lever 7 is pivoted slightly further than in FIG. 4 , wherein the pivoting movement of the ejection lever 7 is effected by a drive unit, not shown. By the pivoting movement of the ejection lever 7 and its attachment to the rear wall 3b of the drawer 3, the drawer 3 from the in FIG. 3 shown closed position moves a little way in the opening direction. The drawer 3 is not by the movement of the ejection lever 7 to the fully open position according to FIG. 6 emotional. Rather, the drawer 3 is brought after the ejection movement by ejection lever 7 in a partially open position, from which, for example, a person can open the drawer 3 by hand on or close again. However, the sequence of movements could be optimized so that the drawer 3 can be opened almost or completely with the caster.

After the ejection operation, the ejection lever 7 is immediately or shortly thereafter pivoted back to its rest position, such as FIG. 6 clarified. Due to the articulated Abknickmöglichkeit of the ejection lever of the ejection process at an angle forming ejection lever 7 in its rest position according to FIG. 3 respectively. FIG. 6 again completely stretched or space-saving in the body 2 accommodated.

FIG. 7 shows a somewhat more detailed view of another ejection device 6 according to the invention with an ejection lever 7, which is in a zurückschwwenkten position or in a rest position. In FIG. 7 is a Front housing portion of the ejector 6 is not shown, whereby parts for drive transmission from an electric motor 10 to the ejection lever 7 are visible. The individual components or construction elements are in FIG. 7 shown only strongly schematized.

About the electric motor 10 and a gear 11, the ejection lever 7 is pivoted back and forth about the rotation axis R. To transmit the rotational movement to the ejection lever 7, the transmission 11 and further transmission or transmission elements 12, 13 and 14 are provided with which a fixedly positioned on the ejection lever 7 rotary shaft 15 is set in rotation.

For sensory detection of a movement state of the ejection lever 7 and thus a movable furniture part near a mechanical closing stop or for sensory detection of a pivoting movement of the ejection lever 7, a sensor 16 is provided. The sensor 16 comprises a first sensor part 16a on a base body of the ejection device 6 and a second sensor part 16b on a portion of the ejection lever 7, wherein the section is located about the axis R in a radius region corresponding to the sensor part 16a. The sensor parts may in particular comprise an active unit and a cooperating "passive" part, e.g. In an optical sensor, the sensor part 16a could be an optical element and the sensor part 16b could be a reflective element. The sensor parts 16a, 16b may in particular be parts of a Hall sensor.

About attachment clips 17, the ejector 6, for example, on the trusses 8a, 8b according to FIG. 2 be clipped on. The ejection device 6 according to FIG. 7 to FIG. 9 essentially corresponds to the ejection device 6 according to FIG FIG. 2 wherein a front housing part of the ejection device 6 is omitted is.

When pivoting the ejection lever 7 about the axis of rotation R can be carried out with the sensor 16 within the effective range of the sensor 16, a sensory detection of the movement of the ejection lever 7, if the two sensor parts 16a and 16b are within an effective distance from each other, in particular all relevant closing positions of the covering movable furniture part.

Two different closing operations for a movable furniture part eg according to FIG. 2 (Hall sensor is in FIG. 2 not shown) ejectable with an ejection device, such as in Figs FIGS. 7 to 9 is shown by two curves K1 and K2 in the graph according to FIG. 10 Schematically explained. In the diagram according to FIG. 10 the time t is plotted on the abscissa and the path s that can be traveled by the movable furniture part is plotted on the ordinate.

The curve K1 describes a closing process 1, for example, a drawer in a carcass. The curve K1 starts at a time t0 = 0 at a waypoint s1, the curve K1 being obtained by means of the information obtained from the Hall sensor. Upon further approximation of the drawer moving from waypoint s1 in the direction of the closing position, the second waypoint s2 is reached at time t1, in which the drawer assumes a standstill position. The waypoint s2 corresponds to a lower value than the waypoint s1, since s2 is closer to a zero point of the ordinate at s = 0 formed by a mechanical closing stop for the drawer. After the drawer has reached the standstill position at t1, a new closing position is only determined when subsequently within a time interval eg δt = t2 - t1, no further movement takes place, whereby in this time interval a distance covered δs becomes substantially 0 , For example, relatively small Shocking caused by, for example, a person passing in front of the furniture part or caused travel distances of the movable furniture part an δs of, for example, less than 5% or 1% of the total vicinity before the mechanical closing stop are not considered as movement. The value of the time change eg δt = t2 - t1 can be specified or stored in the controller. After the time t2, the newly defined closed position of the drawer is taken as the basis in the control unit and, for example, a movement of the drawer, if this is in a triggering time window, is understood as a tripping operation and the drawer is ejected.

The curve K2 describes a further closing process comparable to K1, wherein the drawer is moved from the first waypoint s1 to a further waypoint s3, in which the drawer remains in a standstill position. The second waypoint s3 according to the curve K2 lies between the closing point s2 according to the curve K1 and the first waypoint s1. This means that the drawer has not been closed when closing according to the curve K2 as far as the closing process according to curve K1 or the closing position reached at waypoint s3 farther away from the mechanical closing stop for the drawer at s = 0 than the waypoint s2 according to curve K1.

LIST OF REFERENCE NUMBERS

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

electric motor

11

transmission

12

transmission element

13

transmission element

14

transmission element

15

rotary shaft

16

sensor

16a

sensor part

16b

sensor part

17

mounting bracket

Claims (10)

1. Device for pushing out a furniture part (3) which is accommodated in a movable manner on a stationary furniture part (2), comprising a pushing-out element (7) which is driven via a drive unit (10) and is provided on one of the furniture parts, in order to push the movable furniture part (3) from a closed position such that contact between the pushing-out element (7) and the other furniture part (2, 3) is ended during a pushing-out operation, and comprising a control unit for controlling the drive unit (10), wherein the control unit takes as a basis a definable closed position of the movable furniture part (3) for controlling the drive unit (10), characterised in that means are provided with which following a closing operation of the movable furniture part (3) a standstill position achieved thereby can be defined as the new closed position and replaces the closed position previously taken as a basis.
2. Device according to claim 1, characterised in that the means are design to define a new closed position when, after the closing operation, the movable furniture part (3) assumes a standstill position within a predeterminable area in the vicinity of a mechanical closing stop of the movable furniture part (3).
3. Device according to claim 1 or 2, characterised in that the means are designed to determine the new closed position when, within a predefined period of time from the point in time at which the standstill position is reached, there is no significant movement of the movable furniture part (3).
4. Device according to any one of the preceding claims, characterised in that the means are designed such that a new closed position is not determined when, beyond a predefined period of time, calculated from the point in time at which the standstill position is reached, there is no longer any significant movement of the movable furniture part (3).
5. Device according to any one of the preceding claims, characterised in that the means comprise sensor means (16) for detecting a movement state of the movable furniture part (3).
6. Device according to any one of the preceding claims, characterised in that the sensor means (16) are designed to detect the movement state of the movable furniture part (3) indirectly by means of the sensor detection of the movement of the pushing-out element (7).
7. Device according to any one of the preceding claims, characterised in that the sensor means comprise a sensor (16) with two sensor parts (16a, 16b), wherein one sensor part (16a) is arranged on a fixed part of the pushing-out device (6) or on the stationary furniture part, and the other sensor part (16b) is arranged on the pushing-out element (7) or on the movable furniture part.
8. Device according to any one of the preceding claims, characterised in that the sensor means comprise a Hall sensor (16).
9. Device according to any one of the preceding claims, characterised in that the sensor means (16) are designed to supply information relating to a sensor-detected movement state of the movable furniture part (3) to the control unit.
10. Piece of furniture (1) comprising a furniture part (3) that is movable relative to a stationary furniture part (2), wherein the piece of furniture (1) comprises a device according to any one of the preceding claims.

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