WO2014114514A1

WO2014114514A1 - Accelerating device for moveable furniture or domestic-appliance parts

Info

Publication number: WO2014114514A1
Application number: PCT/EP2014/050481
Authority: WO
Inventors: Patrick Freiheit; Michael Schwarz
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2013-01-23
Filing date: 2014-01-13
Publication date: 2014-07-31
Also published as: EP2948023A1; CN104936481B; TW201438632A; TR201808171T4; EP2948023B1; CN104936481A; RU2635913C2; RU2015122301A; DE102013100652A1; ES2673395T3

Abstract

An accelerating device for moveable furniture parts, in particular drawers or doors, has a housing (2), an energy store (4), which has a first end fastened on the housing (2), at least one driver (13), which is arranged in a displaceable manner on the housing (2) and can be prestressed by the energy store (4), and a deflecting device (10), which is mounted on the housing (2) and via which the energy store (4) is connected to the driver (13), wherein the deflecting device (10) is coupled to a mechanical blocking device, by means of which the energy store (4), during the course of a stressing operation, can be secured in at least one intermediate position between a minimally stressed position and a maximally stressed position.

Description

Accelerator device for movable furniture or

Household appliance parts

The invention relates to an acceleration device for movable furniture or household appliance parts, in particular for drawers or doors, according to the preamble of claim 1.

From the prior art, for example, from EP 7 669 393 A1, opening devices for movable furniture parts are known in which an ejection mechanism accelerates a movable furniture part in the opening direction and thus expelled and the movable furniture part, such as a drawer, initially held in a closed position and by pulling or pushing against the ejection direction, the opening device is unlocked, while the movable furniture part is moved out of the furniture body.

The spring tension systems used on such opening or closing devices for accelerating the moving furniture parts have largely linear spring rates and are in a continuous movement, for example, when inserting the movable furniture part back into its closed position in the furniture body stretched. A disadvantage of the opening and closing devices known from the prior art is that, especially in the case of limited installation space conditions, short strong springs, in which the force difference between the tensioned and unstressed end position exerted on the movable furniture part is correspondingly very high (high AF). wherein the abrupt demolition of the actuating force is perceived as negative by the operator after tensioning the spring. The use of springs with flat spring rate is not possible without additional deflection systems in the rule.

Another disadvantage of the systems known from the prior art is that when an interruption of a clamping operation, the energy previously absorbed by the spring is released again against the direction of movement, which causes the furniture parts to be opened or closed again in the starting position moving backwards and thus injuring the operator in the worst case. To prevent this is known for example from DE 102 46 438 A1, a drawer system with an automatic retraction and a manually releasable holding system with which a drawer against the spring force can be kept open at different locations. The disadvantage here is that the operator has to intervene manually to release the lock, ie here must reach under the drawer for unlocking.

The object of the present invention is to provide an accelerating device for movable furniture parts, that is to say positively or negatively accelerating or assisting the opening and / or closing operation, in which a clamping of at least one force accumulator connected to a driver of the accelerating device is connected, harmless interruptible and that is easy to use. This object is achieved by an acceleration device for movable furniture parts with the features of claim 1.

In the case of the acceleration device according to the invention with a deflecting device mounted on a housing of the ejection or retraction device, via which the energy accumulator is connected to a driver, the deflecting device is coupled to a blocking device with which the force accumulator can be moved between at least one intermediate position between at least one intermediate position minimum tensioned position and a maximum tensioned position can be determined.

This makes it possible that, for example, in an ejection device when reinserting, for example, a drawer in a furniture body in which the energy storage is tensioned, held the energy storage due to a too weak to reach the closed position push on the drawer in the direction of the closed position of the drawer in this intermediate position is and thus the directly or indirectly coupled drawer only partially and not completely pushed out of the furniture body. A complete unloading of the energy storage before the end of the tensioning process of this energy storage is thus effectively prevented.

Advantageous embodiments of the invention are the subject of the dependent claims. According to an advantageous embodiment of the invention, the deflection device on a the distance of the articulation point of the energy storage device from a rotation axis of the deflection during a tensioning or relaxation process changing flow curve. In particular, the deflecting device has a disc-shaped base body which can be rotated about a rotation axis, on whose peripheral edge aligned parallel to the axis of rotation the connecting element connected to the driver and the main body of the deflecting device via which the driver is connected via the deflecting device, upon rotation of the main body is windable.

By changing the distance of the point of application of the energy storage device from the pivot point of the deflection device, a change in torque is effected, which has an advantageous effect on the ease of operation during the clamping operation of the movable furniture part, since a demolition actuation force described above is no longer felt or at least strong is formed toned without the required closing or opening force of the system to change. According to a further embodiment of the invention, the main body of the deflecting device has a groove extending radially to the axis of rotation, in which a parallel to the axis of rotation of the deflector extending driver is guided, which can be guided in a formed on the housing and / or a housing enclosing cover cam is. This control cam preferably has at least one locking position defining the intermediate position between a minimum tensioned position or a maximum tensioned position of the energy accumulator.

The combination of such a deflection device with a control cam so a formation of locking positions is possible in which the preferably constructed as a spring energy storage device can be held during clamping of the energy storage and a complete closing or opening of the movable furniture part in a simple manner by further pressing or Moving the movable furniture part further into its final position is possible without having to release the lock manually. The invention will be explained in more detail by means of embodiments with reference to the accompanying drawings. Show it :

FIG. 1 shows an exploded perspective view of an embodiment of an acceleration device with a force storage system according to the invention;

Figures 2 and 3 are plan views of the ejector as formed

Embodiment of an acceleration device with a power storage storage system according to the invention during the triggering process (with the cover removed);

FIG. 4 is a partial elevational view of the ejection device of FIG

Figure 2 showing the integrated into the housing and the cover cam in the tensioned state of the energy accumulator; a front view of the ejection device according to Figures 1 to 4 immediately before the ejection of the movable furniture part; a detailed view of marked with VI in Figure 5 Details to illustrate the release position of the carriage;

Figures 7 to 12 are further front views of the ejector in continuous positions during an ejection operation; Figures 1 3 and 14 are front views of the embodiment of the ejection device according to Figures 3 and 4 when tensioning the force accumulator in a position in which the energy storage is held in a first locking position. Figure 1 5 a of Figure 14 according to partially exploded front view of the embodiment of the ejection device in a second locking position; Figures 1 6 to 1 9 front views of the embodiment of the ejection device shortly before or when reaching the closed position; and

FIGS. 20 and 21 are front views of an adjusting screw of the ejection device which influences the triggering process.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the housing, energy accumulator, driver, deflection device and the like chosen in the respective figures. These terms are not meant to be limiting, that is to say, by different working positions or the mirror-symmetrical design or the like, these references may change.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In FIG. 1, the reference numeral 1 denotes a design variant of an acceleration device according to the invention for movable furniture parts designed as an ejection device.

The acceleration device will be described in the following description by way of example with reference to the ejector shown, wherein in this ejection device, a force storage 4 is tensioned during a closing operation of the movable furniture part, for example a sliding relative to a furniture body push element such as a drawer, a sliding or a swinging door , However, the use of such an acceleration device is also conceivable, for example, as a retraction device for a movable furniture or domestic appliance supportive collection device or as the opening and / or closing operation of a sliding door or held on hinges swing-open door.

The ejection device 1 shown in FIG. 1 has a housing 2 and a cover 3 closing the housing 2. As can be clearly seen in the exploded view of FIG. 1, a first guide track 25 and a second guide track 26 are provided in the housing 2, which run for the most part parallel to one another. In the first guide track 25 while a driver 13 is guided, which is lockable in a conventional manner in a first end position in which a by means of this driver 1 3 ejectible movable furniture part is in its closed position. The driver 1 3 is tilted in this end position in an angled end portion of the first guide track 25.

To trigger an ejection operation is used to lift the driver 1 3 from its tilted position in the angled portion of the first guide belt 25 rotatably mounted on the housing 2 lever 8, the sliding on a protruding from the housing 2 slide 1 5, in the second Guideway 26 is moved and a mounted on the carriage 1 5 actuated plunger 1 6 abuts the ejected movable furniture part, by slightly moving the carriage 15 against the ejection direction X presses a lever arm of the lever 8 downwards, so that the other lever arm of the lever 8 one of the leadership of the driver 1 3 in the first guideway 25 serving pin of the driver 1 3, which engage in the guideway 25, engages under and thereby the driver 1 3 from the angled end portion of the first guideway 25 out in parallel to the second guideway 26 Area of the first guideway 25 is raised.

By lifting the driver 1 3 in the second guide track 26 parallel portion of the first guide track 25 engages behind a tip of the driver 1 3 a stop of the carriage 1 5 and is brought in the ejection direction with the carriage 1 5.

As further shown in FIG. 1 and, for example, in FIG. 2, the driver 1 3 is connected via a second connecting element 9, a deflecting device 10 and a first connecting element 5 to a force accumulator 4 which is preferably designed as a tension spring, wherein the energy accumulator 4 is maximally tensioned when the driver 13 is positioned in the position in the angled portion of the first guide track 25, as shown in Figure 2. The second connecting element 9, preferably a drawstring or a rope piece, is fixed with a first end 23 to the driver 1 3 and with a second end 24 in a receptacle 1 2 of a main body 28 of the deflecting device 1 0. It is also conceivable that the second connecting element 9 is designed as a rigid element, for example as a rack. Accordingly, a first connecting element 5 is fixed at one end to the force accumulator 4 designed here as a tension spring and with its other end also to the main body 28 of the deflection device 1 0. Depending on the configuration of the energy accumulator 4 is also a direct connection of the force accumulator 4 to the deflection device 1 0 conceivable.

As clearly shown in FIG. 1, the deflecting device 10 essentially consists of a partially wheel-shaped main body 28 with receptacles 12 extending radially inwardly from the peripheral edge for receiving the one end 24 of the second connecting element 9 and the one end of the housing In the particular embodiment variant shown here, the deflection device 1 0 is rotatably mounted on the housing 2 and the lid 3, wherein the distance of the articulation point of the energy accumulator 4 of a rotation axis 23 of the deflection device 1 0 in the History of an opening or closing operation has changing flow curve.

The aligned parallel to the rotation axis 23 peripheral edge 27 of the body 28 serves to receive the connected to the driver 1 3 connecting element 9, which is wound on a rotation of the body 28 on this peripheral side edge 27.

A portion of the edge 27 of the disk-shaped base body 28 has in a predetermined angular range of the main body 28 extending in the direction of deflection guide 1 1, in which a portion of the energy storage device 4 and connected to the energy storage 4 and fixed to the main body 28 first connecting element. 5 in a predetermined rotational angle range of the deflecting device 10 bears radially closer to the axis of rotation 23 of the deflecting device. This makes it possible that the torque acting on the deflection device 1 0 decreases by changing the point of application of the trained as a tension spring energy storage device 4 on the deflecting 1 0 force approaching the closed position of the driver 1 3 and thus an abrupt demolition of the operating force Clamping the ejection device prevented. As can be seen in Figures 1, 2 and 4, a control cam 20 on the housing 2 and / or the housing 2 facing the inside of the lid 3 is provided on the housing 2 in the region of the deflection device 1 0, in which a in a radially led to the axis of rotation 31 of the body 28 extending groove 19 guided driver 1 8 is guided, so that the driver 1 8 is guided radially movable in the groove 1 9 of the body 28 upon rotation of the deflecting device 1 0 in the controller 20. In this case, the control cam 20 has at least one intermediate position between a minimum tensioned position and a maximum tensioned position of the force accumulator 4, defining a blocking position. In the embodiment shown in the figures, the cam 20 is formed with a first locking position 21 and a second locking position 22.

In an alternative embodiment of the feasible in the cam 20 driver 1 8 is designed such that it is against the clamping direction steplessly locked in the control cam 20 or clamped in a movement of the base body 28.

An intended sequence of an ejection process and a subsequent re-insertion process of the ejection device 1 will now be described with reference to FIGS. 2 to 18. As already explained above, Figure 2 shows the starting position of the ejection device in which the driver 13 rests in the angled region of the first guide track 25 and is in engagement with the carriage 1 5. The energy storage 4 is maximally tensioned in this position.

After triggering the ejection operation by moving the carriage 1 5 opposite to the ejection device X, in which the driver 1 3 from the angled portion of the first guide track 25 in the second guide track 26 parallel portion of the first guide track 25, as shown in Figure 5 , the driver 1 3 via the connecting element 9 and the deflecting device 1 0 of the energy storage device 4, which is connected via the connecting element 5 with the deflection device, pulled in the ejection direction X, pushing the carriage 15 in the second guide track 26 in the ejection direction, until the carrier 13 and the carriage 1 5 have reached the other end of the respective guideway 25, 26 and the force accumulator 4 is thereby brought into the maximum possible relaxed position. This position is shown in FIG. Figures 7 to 1 1 show respective intermediate positions, in which is illustrated in particular that the connecting element 5 is guided at the beginning of the ejection movement in the slot 1 of the base body 28 and thus the torque exerted on the deflecting device 1 0 due to the small distance of the application point attacking of the rotation axis 31 is relatively small and when turning the deflecting device 1 0 clockwise from the slot 1 1 exits and rests on the peripheral edge 27 of the body 28, which Shen according to its shape with size ßer expectant twist angle radially from the rotation axis 23 to the outside Shen migrates so that shortly before reaching the ejection end point of the carriage 1 5 and the driver 13 of the driver 1 3 is pulled with maximum torque in the end position. As can be seen in FIGS. 8 and 10, during this ejection operation the driver 18 is initially guided along a predetermined path in the control cam 20 on a path region of the control cam 20 which is concentric about the axis of rotation 31 and closer to the latter at a predetermined angle exceeded Rotary axis 31 introduced (see Figure 1 0).

In the subsequent insertion movement of the carriage 1 5 and the driver 13 back into the starting position shown in Figure 2, as shown in Figures 1 3 to 18, the driver 13 by the pivotally mounted on the carriage 1 5 pendulum support 14 back pushed into the starting position shown in Figure 2. In this case, the energy storage 4 is stretched again. If the start of the carriage 1 5 is interrupted during the clamping operation, the driver is 1 8 during the passage of the radially inner path of the control cam 20 depending on the current position of the driver in a first locking position 21, shown in Figure 14, or in a second locking position 22, shown in Figure 1 5, shrink, whereby a recoil of the driver 1 3 due to the tensile force of the force accumulator 4 is prevented. Thus, by simply advancing the carriage 1 5 counter to the ejection device, the closing movement intercepted in the first or second blocking position 21, 22 can be continued until the end position of the carrier shown in FIG. As can be seen in FIGS. 18 and 19, the force accumulator 4 is fastened to the housing 2 of the pullout device 1 via a force accumulator holder 6. This power storage holder 6 in this case has an adjusting element 7, preferably designed as an adjusting screw, with which the pretensioning of the energy accumulator 4 can be individually adjusted by displacing the energy accumulator holder 6 in or against the ejection direction X. FIG. 8 shows a position of the energy accumulator holder 6 in which the force accumulator 4 designed as a tension spring is slightly tensioned, whereas in FIG. 19 the position of the energy accumulator holder 6 is strongly biased.

To compensate for tolerances in the pre-setting of the stroke for triggering the ejection device, an adjusting wheel 29 is further provided on the housing 2, with which the lever 8 can be set in a predetermined starting position, so that preferably depending on the position of the adjusting wheel eccentrically formed support edge 30 is provided, abuts in the remote from the driver 13 underside of the lever, the stroke of the lever 8 is adjustable. Different settings of the adjusting wheel 29 are shown in Figures 20 and 6. It is important that when closing a drawer with an ejector 1, as described above, in the event that the driver 13 pushes the drawer to close with too little force, by the locking device acting from the energy storage on the driver tensile force in at least one Intercepted and thus only a fraction of the traction would be fed back into the management system. The drawer would thereby be pushed at a much slower speed back towards the operator, with the operator then having the option of completely closing the drawer without manually releasing a lock by simply forcing it.

LIST OF REFERENCE NUMBERS

1 accelerator

2 housings

3 lids

4 energy storage

5 first connection element

6 power storage holder

7 adjustment

8 levers

9 second connecting element

10 deflection device

1 1 guide groove / slot

12 recording

13 drivers

14 pendulum support

15 sleds

16 pestles

18 drivers

19 groove

20 control curve

21 locking position

22 locking position

23 first end of the connecting element 24 second end of the connecting element

25 first guideway

26 second guideway

27 peripheral edge

28 basic body

29 adjustment wheel

30 support edge

31 axis of rotation

Claims

claims

1 . Accelerator device for movable furniture or household appliance parts, in particular drawers or doors, comprising

a housing (2),

a force accumulator (4) attached to the housing (2) with a first end,

at least one on the housing (2) arranged movable and prestressed by the energy storage device (4) driver (13) mounted on the housing (2) deflection device (10) via which the energy storage device (4) connected to the driver (13) is, characterized in that

the deflecting device (10) is coupled to a mechanical locking device with which the force accumulator (4) can be fixed during a tensioning operation in at least one intermediate position between a minimum tensioned position and a maximum tensioned position.

2. Acceleration device according to claim 1, characterized in that the driver (13) via a first connecting element (9) with the deflection device (10) is connected.

3. Acceleration device according to claim 1 or 2, characterized in that the first connecting element (9) is designed as a drawstring.

4. Acceleration device according to one of the preceding claims, characterized in that the deflection device (10) has a distance of the articulation point of the energy accumulator (4) from a rotation axis (31) of the deflection device (10) during an opening or closing operation changing flow curve.

5. Acceleration device according to claim 3, characterized in that the deflection device (10) has a rotation axis (31) rotatable disc-shaped base body (28), on whose parallel to the rotation axis (31) aligned circumferential edge (27) with the driver ( 13) and the main body (28) of the deflection device (10) connected connecting element (9) upon rotation of the base body (28) can be wound up.

Acceleration device according to one of the preceding claims, characterized in that a portion of the edge (27) of the disk-shaped base body (28) has a constant distance (r) to the axis of rotation (31) of the deflection device (10) and at least one further portion of the edge (27 ) of the disk-shaped base body (28) has a distance from the constant distance (r) deviating from the axis of rotation (31) of the deflection device (10).

Acceleration device according to claim 5 or 6, characterized in that a portion of the edge (27) of the disc-shaped base body (28) has a circumferentially extending guide groove (1 1), in which a portion of the force accumulator (4) or one with the energy storage (4) connected to the base body (28) fixed second connecting element (5) in a predetermined rotational angle range of the deflection device (10).

Ejecting and / or collecting device according to claim 7, characterized in that the second connecting element (9) is designed as a drawstring or rope piece.

Acceleration device according to one of the preceding claims, characterized in that the base body (28) has a radially extending to the rotation axis (31) groove (19) in which a parallel to the axis of rotation (31) extending driver (18) is guided, the in a on the housing (2) and / or the housing (2) closing the lid (3) integrally formed control cam (20) can be guided.

Acceleration device according to one of the preceding claims, characterized in that the control cam (20) has at least one locking position (21, 22) defining the intermediate position between a minimum tensioned position and a maximum tensioned position.

Acceleration device according to one of the preceding claims 1 to 9, characterized in that in the control cam (20) Guideable catch (18) is designed such that it can be latched or clamped counter to the clamping direction in the control cam (20) during a movement of the base body (28).

Acceleration device according to claim 1 1, characterized in that the driver (18) is designed as a friction wheel.

Acceleration device according to one of the preceding claims, characterized in that the driver (13) in a first guide track (25) of the housing (2) is movable and lockable in a first end position and in a second guide track (26) of the housing (2) with the driver (13) and the movable furniture part couplable carriage (15) is movably mounted.