DE102010031941B4 - Furniture drive with touch-latch device - Google Patents

Abstract

Furniture drive for moving a movable furniture part (3) with a touch-latch device (21), the at least one manually loaded by a user energy storage device (28) and at least one starting element (11) for ejecting the movable furniture part (3) from a Has closed position in an open position, wherein the loading of the force accumulator (28) by a movement of the movable furniture part (3) and via a transmission mechanism (22) when opening the movable furniture part (3), characterized in that the transmission mechanism (22) at least a pivotally mounted lever (16) on the one hand with the starting element (11) of the touch-latch device (21) coupled and on the other hand by the movable furniture part (3) or a part attached thereto can be acted upon.

Description

The present invention relates to a furniture drive for moving a movable furniture part with a touch-latch device having at least one manually loaded by a user energy storage and at least one starting element for ejecting the movable furniture part from a closed position to an open position, wherein the Loading of the energy storage by a movement of the movable furniture part and via a transmission mechanism when opening the movable furniture part takes place.

Lockable ejection devices in the form of so-called touch-latch devices are known in many embodiments, for example from the WO 2007/112463 A2 and the WO 2007/028177 A1 , The function of the touch-latch device is based on the fact that the movable furniture part is initially pressed slightly further in the closing direction, starting from the closed position, whereupon the touch-latch fitting triggers and the drawer is ejected from the closed position to an open position. This ejection provides a gap between the drawer front and the furniture body which allows manual intervention so that the drawer can be moved freely after ejection by a person.

From the AT 8 629 U1 The applicant is a drawer extension with a touch-latch functionality described. The basic idea of this document is to use the energy of a drawer or door when opening and / or closing to load the energy accumulator of the touch-latch device. Another basic idea of AT 8 629 U1 is to complete the charging process of the energy storage of the touch-latch device before reaching the closed position and decouple the energy storage device from the movable furniture part, to close in this way, the movable furniture part in a decoupling downstream feed and / or steaming area gently. The effective between the movable furniture part and the touch-latch device transmission mechanism may be formed by a gear with racks and one or more gears, so as to transmit the kinetic energy of the drawer to the touch-latch device, whereby the energy storage is charged , Although this embodiment of the prior art works reliably, the overall construction is relatively expensive due to the large number of individual parts.

An object of the present invention is therefore to simplify the transmission mechanism of the aforementioned furniture drive.

This is achieved by the features of claims 1, 14 and 16 according to the invention.

Thus, it is thus provided that the transmission mechanism has at least one pivotally mounted lever which can be coupled on the one hand with the starting element of the touch-latch device and on the other hand by the movable furniture part or a part attached thereto.

Further advantageous embodiments are defined in the subclaims.

According to a preferred embodiment it can be provided that a movement of the movable furniture part on the starting element is transferable by the lever, wherein the starting element is moved against the ejection direction when opening the movable furniture part and thus loads a force storage of the touch-latch device. In other words, immediately after the ejecting operation, the motive power of the opening drawer is used to immediately move the urging member against the ejection direction (i.e., against the force of the momentum accumulator) so as to immediately recharge the energy accumulator, i. to re-tension the force of the spring of the touch-latch device.

According to a preferred embodiment, the lever may be formed as a two-armed lever. It may be expedient if a first end of the two-armed lever, preferably via an intermediate lever, with the starting element of the touch-latch device, coupled or permanently connected thereto. A second end of the two-armed lever, however, can be detachably coupled to the movable furniture part or the part attached thereto.

It is therefore basically possible to transmit the movement of the drawer to the starting element with a single two-armed lever, which is thereby pressed in the closing direction of the drawer and thus can charge the energy storage of the touch-latch device. The inventive construction, the number of components used can be significantly reduced. By the length of the power arm of the two-armed lever with respect to its axis of rotation also favorable gear ratios can be achieved because less force for moving the load arm (ie for tensioning the spring of the touch-latch device) is required by an extended force arm.

The energy accumulator may comprise at least one spring or an electric motor, which causes the corresponding opening movement of the starting element. The power storage is of course to be dimensioned so that its force is sufficiently higher than the closing force of a collection device which detects the drawer rail towards the end of the closing movement and pulls in the full closed position. The energy storage of the touch-latch device must therefore be able to eject the drawer starting from the full closed position against the closing force of the feeder easily in an open position.

According to one embodiment it can be provided that an attachment is provided, which is attached to a drawer rail of a drawer pull-out or fastened and projects laterally in mounting position of the drawer rail, wherein the attachment carries a stop for the starting element. It may be expedient if the attachment has a driver which cooperates with the transmission mechanism, preferably with the two-armed lever. The driver can be arranged or formed firmly on the attachment. It is also possible to arrange the driver on the attachment movable. It can also be provided that the driver is designed to act on the two-armed lever on a pivotally mounted on the attachment lever. To decouple the driver from the lever of the transmission mechanism mechanical spring elements cause the decoupling of the driver. Conveniently, the use of cams or guideways along which the driver guided controlled and decoupled from the lever of the transmission mechanism.

The drawer extension according to the invention is characterized by a furniture drive of the type in question. It can be provided that the drawer extension has a to be fixed to a cabinet carcass rail and at least one relatively movable drawer rail and optionally a slidably mounted between the carcass rail and the middle rail center rail, wherein the drawer rail and / or the middle rail of a closed by the furniture drive End position is movable in an open position.

The furniture according to the invention is characterized by a drawer pull-out guide of the above type.

Further details and advantages of the present invention will become apparent from the following description of the figures. It shows or show:

1 a schematic plan view of a drawer extension with an adapter connected thereto,

2 a perspective view of a piece of furniture, wherein a drawer is movably guided relative to a furniture body via pull-out guides according to the invention,

3 a perspective view of a pull-out with the attached adapter, which has a touch-latch device for ejecting a drawer,

4 an exploded view of the pull-out guide for drawers,

5a . 5b an exploded view of a portion of the adapter with the mounted thereon touch-latch device and a representation of a turning loop of the touch-latch device in a perspective view from below,

6a - 6f time sequences of the opening movement of the drawer rail, in which the energy storage of the touch-latch device is charged,

6g an illustration of the closing movement, wherein the driver passes by the two-armed lever of the transmission mechanism in an uncoupled manner,

7 a plan view of a pull-out with a deflector, through which the driver can pass during the opening movement of a locked lever,

8th the pull-out guide with the adapter according to 8th , wherein the lever has a directional overload protection.

1 shows a schematic plan view of a pull-out 5 for a drawer (not shown). The pull-out guide 5 has a cabinet body to be fastened to a furniture body 6 and at least one relative to sliding sliding rail 7 on. The pull-out guide 5 has in a known manner a collection device 19 on which with one of the shop rail 7 associated driver element 23 releasably coupled. Towards the end of the closing movement of the drawer rail 7 becomes the driving element 23 from the collection device 19 captured and from the intake spring 19a pulled into the full closed position. For damping the closing movement, a damping device 20 be provided by the retraction movement of the drawer rail 7 is dampable. The damping device 20 and / or the collection device 19 can be between the carcass rail 6 and the drawer rail 7 or directly on one of these rails 6 . 7 be arranged, wherein the driver element 23 also stationary at the carcase rail 6 can be arranged. The pull-out guide 5 with the rails 6 and 7 as well as with the collection device 19 and the damping device 20 So forms a per se known rail system according to the prior art. By one on the pull-out guide 5 to be attached adapter 8th can the pull-out guide 5 equipped with a touch-latch functionality. The furniture drive in the form of the adapter 8th includes a touch-latch device 21 with a starting element acted upon by a force store 11 , which during the ejection process of the drawer rail 7 at a stop 12 the shop rail 7 strikes and thereby the drawer rail 7 moved in the ejection direction A in an open position. The adapter 8th also has a transmission mechanism 22 on, through which a movement of the shop rail 7 on the starting element 11 is transferable, wherein the starting element 11 when opening the drawer rail 7 is moved counter to the ejection direction A and thus the energy storage of the touch-latch device 21 charging.

2 shows a perspective view of a piece of furniture 1 with a furniture body 2 and with a drawer 3 that have a pull-out guide 5 relative to the furniture body 2 is movably mounted. In the figure shown is the drawer 3 in an open position. If the drawer 3 in the fully closed position, so can the drawer 3 by manual pressure or pulling on the front panel 4 via the touch-latch device 21 of the adapter 8th ( 1 ) are moved into an open position.

3 shows a perspective view of a pull-out 5 for drawers 3 , This conventionally includes one on the furniture body 2 to be fastened carcass rail 6 and at least one relatively displaceably mounted drawer rail 7 that with the drawer 3 to connect. The pull-out guide 5 can be designed as a two-part rail system or as a three-part rail system, wherein between the carcass rail 6 and the shop rail 7 an additional center rail is slidably disposed so as to be a full extension of the drawer 3 relative to the furniture body 2 to enable. With the pull-out guide 5 is an additional adapter 8th connected, which is a substantially plate-shaped base part 9 having, which with the carcass rail 6 connected is. The base part 9 can with the carcase rail 6 be firmly connected or detachably connectable with this and stands in mounting position of the stationary carcass rail 6 laterally in a horizontal direction. On the from the carcass rail 6 opposite side of the base part 9 is a housing 10 stored, which for receiving a touch-latch device 21 ( 1 ) is provided. From the case 10 stands at the side of a starting element 11 from which is mounted relative to linearly displaceable. The starting element 11 is in the longitudinal direction of the pull-out 5 slidably mounted and acts with a stop 12 together, at one with the shop rail 7 connected attachment 13 is trained.

The attachment 13 is with the shop rail 7 connected or detachably connectable and is in mounting position of the drawer rail 7 also laterally in the horizontal direction. The stop 12 of the attachment 13 is formed as a bent abutting edge, which is substantially perpendicular to the drawer rail 7 runs. Starting from the closed position shown in 3 can the drawer 3 (and thus the attack 12 ) first in an overpressed, further in the furniture body 2 moved into shifted position so that the stop 12 the starting element 11 moved to a rear end position, whereupon in the housing 10 mounted touch-latch device 21 triggers. The starting element 11 now hits the stop 12 in the direction of the open position, whereby also the drawer rail 7 as well as an associated drawer 3 be moved in an open position.

4 shows an exploded view of the pull-out 5 with the on a furniture body 2 to be fastened carcass rail 6 and the relatively movable drawer rail 7 , The adapter 8th has a substantially plate-shaped base part 9 on, which is formed in two parts in the embodiment shown and a base plate 9b as well as the control plate mounted thereon 9a includes. On or in the control panel 9a is a control curve 17 for the driver 15 arranged or formed. On the base plate 9b is the case 10 the touch-latch device 21 stored, wherein the starting element 11 is recognizable. At the shop rail 7 is an attachment 13 to attach the stopper 12 for the starting element 11 wearing. Visible is a transmission mechanism 22 for transmitting a movement of the drawer rail 7 on the starting element 11 the touch-latch device 21 , whereby the energy storage of the touch-latch device 21 after the ejection of the drawer rail 7 can be recharged. The transmission mechanism 22 includes one on the control panel 9a pivotally mounted lever 16 as a two-armed lever 16 with a first end 16a and a slightly longer second end 16b is trained. The shorter first end 16a of the lever 16 comes with an intermediate lever 18 connected, which on the lever 16 opposite side with the starting element 11 the touch-latch device 21 - Preferably articulated - is connected. At the bottom of the attachment 13 is a pivotable about the axis S control lever 14 stored, which has a downward driver 15 having. The peg-shaped driver 15 serves to act on the lever 16 , which deals with the shop rail 7 moving driver 15 during extension of the drawer 3 the end 16b of the two-armed lever 16 applied, whereupon the two-armed lever 16 again pivoted in the opposite direction and the starting element 11 the touch latch device via the intermediate lever 18 reset again (ie against the ejection direction of the starting element 11 and against the force of the energy storage of the touch-latch device 21 ), whereby the energy storage device can be recharged.

5a shows an exploded view of a part of the adapter 8th with the base plate 9b , wherein the, preferably detachable, connection of the base plate 9b with the stationary carcass rail 6 fastening devices 24 are provided. In the figure shown is the touch-latch device 21 shown in more detail, which an energy storage 28 in the form of the two springs 28a exhibit. The feathers 28a on the one hand fixed to the housing, on the other hand on a slidably mounted carriage 25 stored, which is the starting element 11 wearing. Visible is a swivel part 26 standing at the top of the sled 25 is pivotally mounted. A bolt 27 passes through the pivoting part 26 and engages in one of the housing 10 arranged or trained Wendeschleife or heart curve, as in connection with touch-latch devices 21 are already known, which is why their function in the context of the present invention will not be discussed in more detail. 5b shows the bottom of the case 10 in which a labyrinthine turning loop 29 to guide the bolt 27 is trained. Depending on the position of the bolt 21 in the turning loop 29 is the starting element 11 either locked in a cocking position or released.

6a - 6f show temporal sequences of the opening operation of the pull-out 5 in a top view. 6a shows the full closed position of the drawer rail 7 relative to the carcase rail 6 , Visible is the pull-out guide 5 associated collection device 19 for retracting the drawer 3 in the full closed position and the damping device 20 for damping this closing movement. In the case 10 is the touch-latch device already described 21 stored, the starting element 11 is relative to the housing 10 slidably mounted. The two-armed lever 16 is pivotally mounted about the rotation axis R and has a shorter end of the lever 16a and a longer end of the lever 16b on. The shorter end of the lever 16a is over the intermediate lever 18 with the starting element 11 the touch-latch device 21 - preferably constantly - connected. Alternatively, the starting element 11 be releasably coupled with the lever. Visible is also with the shop rail 7 connected attachment 13 , which on its underside a control lever mounted about the rotation axis S. 14 having. The driver 15 of the control lever 14 is with the control curve 17 of the control panel 9a (see. 4 ) engaged. Now starting from 6a the drawer in the fully closed position 3 pressed in, so the dissolves in the housing 10 arranged touch-latch device 21 and moves the starting element 11 in ejection direction A, as in 6b is shown. By the movement of the starting element 11 was also the two-armed lever 16 pivoted counterclockwise. The energy storage 28 ( 5a ) of the touch-latch device 21 is now unloaded, the shop rail 7 So it's together with the drawer 3 moved in the opening direction, with the free end 16b of the lever 16 and the driver 15 of the control lever 14 to move towards each other.

6c shows the time in which the in the control curve 17 guided drivers 15 and the free end 16b of the lever 16 meet, whereupon the charging process of the energy storage 28 the touch-latch device 21 is initiated. Through a further opening movement of the drawer rail 7 pushes the driver 15 of the control lever 14 the two-armed lever 16 clockwise, as it is in 6d is shown. By pushing back two-armed lever 16 was also the starting element 11 the touch-latch device 21 against the ejection direction or against the force of the energy storage 28 moved back, with the touch-latch device 21 locked again and the power storage is loaded. The embodiment with the lever 16 in particular also has the advantage that by attacking the driver 15 at the longer end of the lever 16b of the two-armed lever 16 also less force to reset the starting element 11 necessary is. Thus, by a suitable choice of the lever geometry and favorable gear ratios to reduce the applied force can be achieved.

6e shows a further open position of the drawer rail 7 , It can be seen that the driver 14 along an inclined guide portion of the control cam 17 from the longer end of the lever 16b of the two-armed lever 16 was decoupled. Basically, it should also be noted that the control curve 17 for the driver 15 is not mandatory. Completely independent of the presence of the cam 17 namely, an automatic decoupling between the lever end 16b of the lever 16 and the driver 15 thereby brought about, because the lever end 16b due to the pivoting movement of the lever 16 makes a bow and therefore the one with the drawer rail 7 moving driver 15 releases by itself. It should be noted that the driver 15 also firmly on the attachment 13 can be stored.

In 6f is an open position of the pull-out guide 5 shown, with the loading rail 7 regardless of the transmission mechanism of the touch-latch device is freely movable in both directions of movement. The energy storage of the touch-latch device 21 has already been charged and stands for the next ejection process of the drawer rail 7 ready.

6g shows the closing movement of the drawer rail 7 , Starting from 6f became the shop rail 6 moved back in the closing direction. To the driver 15 during the closing process not with the lever end 16b of the lever 16 To couple, can be an oblique guide section 17a the control curve 17 be provided, which the driver 15 when closing the drawer rail 7 in relation to the rotation axis R of the lever 16 moved radially outward. The driver 15 then passes - as in 6g shown - in the upper guide portion of the cam 17 and can be moved in a manner uncoupled from the lever back to the full closed position, as in 6a is shown.

7 shows a further embodiment of a pull-out 5 with an attached adapter 8th , As an essential part here is a deflector 30 to mention, by the one at the control lever 14 stored carriers 15 with non-triggered touch-latch device 21 during the opening movement of the drawer rail 7 at the free end 16b of the two-armed lever 16 can be moved past without the driver 15 with the locked lever 16 collided. The deflector 30 is intended that in case of any misuse of the drawer 3 the outgoing driver 15 the locked lever 16 can not damage. An incorrect operation can be present, for example, when at the drawer in the closed position 3 pulled (instead of pressed), so the touch-latch device 21 is not triggered. Through the deflector 30 will ensure that the driver 15 with non-triggered touch-latch device 21 in the extension movement in the rail-near guide 17b the control curve 17 and not in the remote track 17c is guided, so the driver 15 at the opening movement at the free end 16b of the lever 16 is moved past. The deflector 30 is formed as a resilient tab, wherein a free end of the deflector 30 by a tension spring 31 is biased. The other end of the tension spring 31 engages the hinge axis, which is the lever 16 with the intermediate lever 18 combines. In the figure shown, access to the rail remote guidance 17c through the deflector 30 locked, so the driver 15 is forced, during the opening movement in the rail-near guidance 17b enter. If, however, the starting element 11 after proper triggering of the touch-latch device 21 is moved in the ejection direction A, so is by the hinged tension spring 31 also the free elastic end of the deflector 30 pulled into a position farther away from the rail, so that the driver 15 in the lead 17c can enter, moved along this and the free end 16b of the lever 16 can act properly.

8th shows the pull-out guide 5 with the adapter connected to it 8th where the two-armed lever 16 has a directional overload protection. This overload protection is realized by the two-armed lever 16 two mutually bendable lever parts 32 and 33 having. The first lever part 32 is pivotally mounted about the rotation axis R, while the second lever part 33 with the first lever part 32 is connected via a pivot bearing K. If the drawer 3 should be in an open position and the touch-latch device 21 already triggered, so can the driver 15 in the insertion movement, the second lever part 33 relative to the first lever part 32 pivot, so the driver 15 by a buckling of the two lever parts 32 and 33 each other in a starting position for the next opening operation of the drawer 3 can be reset. In contrast, the driver can 15 again the relatively unfolded lever parts 32 and 33 apply, wherein the longitudinal direction of the first lever part 32 and the longitudinal direction of the second lever part 33 in the unfolded state extend at least approximately axially to each other ( 7 ).

Although the invention has been explained in detail with reference to the embodiments shown, the invention is not limited to these embodiments. Also, the position information selected in the description, such as "top", "bottom", "side", etc. based on the usual installation position of the components used as well as on the figure and are in a change in position mutatis mutandis to the new situation transfer.

Claims (16)

Furniture drive for moving a movable furniture part ( 3 ) with a touch-latch device ( 21 ) containing at least one energy store to be manually loaded by a user ( 28 ) and at least one starting element ( 11 ) for ejecting the movable furniture part ( 3 ) has from a closed position to an open position, wherein the loading of the force accumulator ( 28 ) by a movement of the movable furniture part ( 3 ) and via a transmission mechanism ( 22 ) when opening the movable furniture part ( 3 ), characterized in that the transmission mechanism ( 22 ) at least one pivotally mounted lever ( 16 ), on the one hand with the starting element ( 11 ) of the touch-latch device ( 21 ) can be coupled and on the other hand by the movable furniture part ( 3 ) or an attached part can be acted upon. Furniture drive according to claim 1, characterized in that by the lever ( 16 ) a movement of the movable furniture part ( 3 ) on the starting element ( 11 ) is transferable, wherein the starting element ( 11 ) when opening the movable furniture part ( 3 ) is moved counter to the ejection direction (A) and thus the energy storage ( 28 ) of the touch-latch device ( 21 ) loads. Furniture drive according to claim 2, characterized in that the energy accumulator ( 28 ) at least one spring ( 28a ). Furniture drive according to one of claims 1 to 3, characterized in that the lever ( 16 ) as a two-armed lever ( 16 ) is trained. Furniture drive according to claim 4, characterized in that a first end ( 16a ) of the two-armed lever ( 16 ), preferably via an intermediate lever ( 18 ), with the starting element ( 11 ) of the touch-latch device ( 21 ) is coupled or constantly connected to this. Furniture drive according to claim 4 or 5, characterized in that a second end ( 16b ) of the two-armed lever ( 16 ) with the movable furniture part ( 3 ) or the attached part is releasably coupled. Furniture drive according to one of claims 4 to 6, characterized in that the two-armed lever ( 16 ) on or on an adapter ( 8th ) is mounted, wherein the adapter ( 8th ) with a on a furniture body ( 2 ) to be fastened carcass rail ( 6 ) a drawer extension guide ( 5 ) is connected or detachably connectable. Furniture drive according to claim 7, characterized in that the adapter ( 8th ) a substantially plate-shaped base part ( 9 ), on the one hand with the carcass rail ( 6 ) is connected or detachably connectable and that on the the carcass rail ( 6 ) facing away from the touch-latch device ( 21 ) wearing. Furniture drive according to one of claims 1 to 8, characterized in that an attachment ( 13 ) is provided, which on a drawer rail ( 7 ) a drawer extension guide ( 5 ) is attached or to be fastened and in mounting position of the drawer rail ( 7 ) protrudes laterally, wherein the attachment ( 13 ) a stop ( 12 ) for the starting element ( 11 ) wearing. Furniture drive according to claim 9, characterized in that the attachment ( 13 ) a driver ( 15 ) associated with the transmission mechanism ( 22 ), preferably with the two-armed lever ( 16 ), cooperates. Furniture drive according to claim 10, characterized in that the driver ( 15 ) fixed to the attachment ( 13 ) is arranged. Furniture drive according to claim 10, characterized in that the driver ( 15 ) on one of the attachment ( 13 ) pivotally mounted control lever ( 14 ) formed in a control cam ( 17 ) of the base part ( 9 ) of the adapter ( 8th ) is guided. Furniture drive according to one of claims 1 to 12, characterized in that the movable furniture part ( 3 ) a movable rail ( 7 ) a drawer extension guide ( 5 ). Drawer pull-out guide with a furniture drive according to one of claims 1 to 13. Drawer pull-out guide according to claim 14, characterized in that the drawer pull-out guide ( 5 ) one on a furniture body ( 2 ) to be fastened body rail ( 6 ) and at least one relative to movable sliding rail ( 7 ) and optionally one between the carcass rail ( 6 ) and the shop rail ( 7 ) has displaceably mounted center rail, wherein by the furniture drive the drawer rail ( 7 ) and / or the middle rail is movable from a closed end position to an open position. Furniture with a drawer pull-out guide according to claim 14 or 15.

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