AT508139B1 - FURNITURE DRIVE WITH TOUCH-LATCH DEVICE - Google Patents

Abstract

The invention relates to a 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 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), and wherein the transmission mechanism (22 ) has at least one pivotally mounted lever (16) which on the one hand with the push-in 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

Austrian Patent Office AT 508 139 B1 2010-11-15

The present invention relates to a furniture drive for moving a movable furniture part with a touch-latch device, the 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 force accumulator takes place by a movement of the movable furniture part and via a transmission mechanism when the movable furniture part is opened.

Lockable ejection devices in the form of so-called touch-latch devices are known in many embodiments. The function of the touch-latch device is based on the fact that the movable furniture part is initially pressed from the closed position slightly further in the closing direction, 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 being ejected by a person.

The Applicant's AT 8 629 U1 describes a drawer pull-out guide with a touch-latch functionality. 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 the AT 8 629 U1 is to complete the charging process of the energy storage device of the touch-latch device before reaching the closed position and decouple the energy storage device from the movable furniture part, in this way the movable furniture part in one of the decoupling downstream feeder and / or gently close the steaming area. 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 claim 1.

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 by the lever, a movement of the movable furniture part is transferable to the starting element, wherein the starting element is moved when opening the movable furniture part against the ejection direction and thus loads a force storage device 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. On the other hand, a second end of the two-armed lever can be detachably coupled to the movable furniture part or the part attached thereto.

So it is in principle possible to transfer 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 aufla the power 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 extension 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. The use of control cams or guideways along which the driver is guided in a controlled manner and can be decoupled from the lever of the transmission mechanism may also be favorable.

The Schubladenausziehführung 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 of the above type.

Further details and advantages of the present invention will become apparent from the following description of the figures. FIG. 3 is a schematic plan view of a drawer pull-out guide with an adapter connected thereto, a perspective view of a piece of furniture, wherein FIG Drawer is movably guided relative to a furniture body on pull-out guides according to the invention, a perspective view of a pull-out with the attached adapter, which has a touch-latch device for ejecting a drawer, an exploded view of drawer pull-out for drawer, 2/17 Austrian Patent Office AT 508 [0020] FIGS. 5a, 5b show an exploded view of a part of the adapter with the touch-latch device mounted thereon and a representation of a turning loop of the touch-latch device in a perspective view from below, [FIG. 0021] Fig. 6a-6f temporal sequences of the opening movement of the drawer rail, in which the

6g shows an illustration of the closing movement, wherein the driver passes by the two-arm lever of the transmission mechanism in an uncoupled manner, FIG. 7 shows a top view of a pull-out guide with a deflector, [0022] FIG. through the

In the opening movement, the driver can drive past a locked lever, FIG. 8 shows the extension guide with the adapter according to FIG. 8, wherein the lever has a direction-dependent overload protection.

Fig. 1 shows a schematic plan view of a pull-out guide 5 for a (not shown) drawer. The pull-out guide 5 has a body rail 6 to be fastened to a furniture body and at least one drawer rail 7 which can be displaced relative thereto. The pull-out guide 5 has, in a known manner, a draw-in device 19 which can be detachably coupled to a driver element 23 associated with the drawer rail 7. Towards the end of the closing movement of the drawer rail 7, the driver element 23 is detected by the intake device 19 and pulled by the intake spring 19 a in the full closed position. To damp the closing movement, a damping device 20 can be provided, by means of which the retraction movement of the drawer rail 7 can be damped.

The damping device 20 and / or the intake device 19 may be arranged between the carcass rail 6 and the drawer rail 7 or directly on one of these rails 6, 7, wherein the driver element 23 may also be arranged stationarily on the carcass rail 6. The extension guide 5 with the rails 6 and 7 and with the retraction device 19 and the damping device 20 thus forms a per se known rail system according to the prior art. By an extension 8 to be fastened to the adapter 8, the pull-5 can be equipped with a touch-latch functionality. The furniture drive in the form of the adapter 8 comprises a touch-latch device 21 with an acted upon by a force accumulator priming element 11, which strikes during the ejection process of the drawer rail 7 to a stop 12 of the drawer rail 7 and thereby moves the drawer rail 7 in the ejection direction A in an open position , The adapter 8 further comprises a transmission mechanism 22, by which a movement of the drawer rail 7 is transferable to the starting element 11, wherein the starting element 11 is moved when opening the drawer rail 7 against the ejection direction A and thus the energy storage of the touch-latch device 21st charging.

Fig. 2 shows a perspective view of a piece of furniture 1 with a furniture body 2 and with a drawer 3, which is mounted on a pull-5 relative to the furniture body 2 movable. In the figure shown, the drawer 3 is in an open position. When the drawer 3 is in the fully closed position, the drawer 3 can be moved into an open position by manual pressure or pulling action on the front panel 4 via the touch-latch device 21 of the adapter 8 (FIG. 1).

3 shows a perspective view of a pull-out guide 5 for drawers 3. This conventionally comprises a cabinet rail 6 to be fastened to the furniture body 2 and at least one drawer rail 7 which is displaceably mounted relative thereto and which is to be connected to the drawer 3. 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 drawer rail 7, an additional center rail is slidably disposed so as to allow a full extension of the drawer 3 relative to the furniture body 2. With the pull-out 5 an additional adapter 8 is connected, which is a substantially plate-shaped Austrian Patent Office AT 508 139 B1 2010-11-15

Base part 9 which is connected to the carcass rail 6. The base member 9 may be fixedly connected to the carcass rail 6 or be detachably connected thereto and is in mounting position from the stationary carcass rail 6 laterally in the horizontal direction. On the side facing away from the carcass rail 6 side of the base part 9, a housing 10 is mounted, which is provided for receiving a touch-latch device 21 (Fig. 1). From the housing 10 is laterally from a starting element 11, which is mounted relative to linearly displaceable. The starting element 11 is displaceably mounted in the longitudinal direction of the pull-out guide 5 and cooperates with a stop 12 which is formed on an attachment 13 connected to the drawer rail 7.

The attachment 13 is connected to the drawer rail 7 or detachably connectable and is also in the mounting position of the drawer rail 7 laterally in the horizontal direction. The stop 12 of the add-on part 13 is designed as a bent abutting edge, which extends substantially at right angles to the drawer rail 7. Starting from the closed position shown in Fig. 3, the drawer 3 (and thus the stopper 12) are first moved into an overpressed, further into the furniture body 2 hineinverlagerte position, so that the stopper 12 moves the starting element 11 in a rear end position, whereupon the triggered in the housing 10 touch latch device 21 triggers. The starting element 11 now pushes the stop 12 in the direction of the open position, whereby the drawer rail 7 and a drawer 3 connected thereto are moved into an open position.

4 shows an exploded view of the pull-out guide 5 with the body rail 6 to be fastened to a furniture carcass 2 and the drawer rail 7 which can be displaced relative thereto. The adapter 8 has a substantially plate-shaped base part 9, which is formed in two parts in the embodiment shown and a base plate 9b and the control plate 9a mounted thereon. On or in the control plate 9a, a control cam 17 is arranged or formed for the driver 15. On the base plate 9b, the housing 10 of the touch-latch device 21 is mounted, wherein the starting element 11 can be seen. On the drawer rail 7, an attachment 13 is to be fastened, which carries the stop 12 for the starting element 11. Visible is a transmission mechanism 22 for transmitting a movement of the drawer rail 7 on the starting element 11 of the touch-latch device 21, whereby the energy storage of the touch-latch device 21 can be recharged after the ejection of the drawer rail 7. The transmission mechanism 22 includes a lever 16 pivotally mounted on the control plate 9a and formed as a two-armed lever 16 having a first end 16a and a slightly longer second end 16b. The shorter first end 16a of the lever 16 is connected to an intermediate lever 18, which is on the side facing away from the lever 16 with the starting element 11 of the touch-latch device 21 - preferably articulated-connected. On the underside of the attachment part 13, a pivotable about the axis S control lever 14 is mounted, which has a downwardly disposed driver 15. The peg-shaped driver 15 is used to act on the lever 16, wherein the moving with the drawer rail 7 driver 15 during extension of the drawer 3, the end 16 b of the two-armed lever 16 is applied, whereupon the two-armed lever 16 is pivoted back in the opposite direction and the starting element 11 of Touch latch device via the intermediate lever 18 is 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.

Fig. 5a shows an exploded view of a portion of the adapter 8 with the base plate 9b, wherein for, preferably detachable, connection of the base plate 9b with the stationary carcass rail 6 fastening means 24 are provided. In the figure shown, the touch-latch device 21 is shown in more detail, which have a force accumulator 28 in the form of the two springs 28. The springs 28a on the one hand fixed to the housing, on the other hand mounted on a slidably mounted carriage 25 which carries the starting element 11. Visible is a pivoting part 26 which is pivotally mounted on the upper side of the carriage 25. A bolt 27 passes through the pivoting part 26 and engages in a arranged or formed on the housing 10 Wendeschleife or heart curve, as described in connection with touch-Latch- 4/17 Austrian Patent Office AT 508 139 B1 2010-11-15

Devices 21 are already known, which is why their function in the context of the present invention will not be discussed in more detail. FIG. 5 b shows the underside of the housing 10, in which a labyrinthine turning loop 29 for guiding the bolt 27 is formed. Depending on the position of the bolt 21 in the turning loop 29, the starting element 11 is either locked or released in a clamping position.

Fig. 6a-6f show time sequences of the opening operation of the pull-5 in a plan view. 6a shows the complete closed position of the drawer rail 7 relative to the carcass rail 6. Recognizable is the drawer guide 5 associated collection device 19 for pulling the drawer 3 in the full closed position and the damping device 20 for damping this closing movement. In the housing 10, the touch-latch device 21 already described is mounted, the starting element 11 is mounted relative to the housing 10 slidably. 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. The shorter end of the lever 16a is connected via the intermediate lever 18 to the starting element 11 of the touch-latch device 21 - preferably constantly - connected. Alternatively, the starting element 11 can also be detachably coupled to the lever. Visible is also connected to the drawer rail 7 attachment 13, which has a mounted on the underside of a rotation axis S control lever 14. The driver 15 of the control lever 14 is engaged with the control cam 17 of the control plate 9a (see Fig. 4). If, starting from FIG. 6a, the drawer 3 located in the fully closed position is pressed in, the touch-latch device 21 arranged in the housing 10 triggers and moves the starting element 11 in the ejection direction A, as shown in FIG. 6b. By the movement of the starting element 11 and the two-armed lever 16 was pivoted counterclockwise. The energy accumulator 28 (FIG. 5 a) of the touch-latch device 21 is now unloaded, the drawer rail 7 is therefore moved together with the drawer 3 in the opening direction, with the free end 16 b of the lever 16 and the driver 15 of the control lever 14 being in contact with one another to move.

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

Fig. 6e shows a further open position of the drawer rail 7. It can be seen that the driver 14 along an oblique guide portion of the control cam 17 has been decoupled from the longer end of the lever 16b of the two-armed lever 16. In principle, it should also be noted that the cam 17 is not mandatory for the driver 15. 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 is thereby brought about because the lever end 16b due to the pivoting movement of the lever 16 executes a bow and therefore moved along with the drawer rail 7 driver 15 of self releases. It should be noted that the driver 15 may also be fixedly mounted on the attachment 13.

In Fig. 6f, an open position of the pull-5 is shown, wherein the drawer rail 7 is independent of the transmission mechanism of the touch-latch device in both directions of movement freely movable. The energy accumulator of the touch-latch device 21 has already been charged and is ready for the next ejection operation of the drawer rail 7. FIG. 6g shows the closing movement of the drawer rail 7. Starting from FIG. 6f, the drawer rail 6 was again moved in the closing direction. In order not to couple the driver 15 during the closing operation with the lever end 16b of the lever 16, an oblique guide portion 17a of the control cam 17 can be provided, which moves the driver 15 when closing the drawer rail 7 with respect to the axis of rotation R of the lever 16 radially outward. The driver 15 then passes - as shown in Fig. 6g - in the upper guide portion of the control cam 17 and can be moved in a manner uncoupled by the lever back to the full closed position, as shown in Fig. 6a.

Fig. 7 shows another embodiment of a pull-5 with an attached adapter 8. An essential part here is a deflector 30 to mention, by the mounted on the control lever 14 driver 15 in non-triggered touch-latch device 21st can be moved past during the opening movement of the drawer rail 7 at the free end 16b of the two-armed lever 16, without causing the driver 15 collides with the locked lever 16. The deflector 30 is provided so that in case of any incorrect operation of the drawer 3 of the extending driver 15, the locked lever 16 can not damage. An incorrect operation can be present, for example, when the drawer 3 in the closed position is pulled (instead of being pressed) so that the touch-latch device 21 is not triggered. By the deflector 30 ensures that the driver 15 is performed in non-triggered touch-latch device 21 during the extension movement in the rail-near guide 17b of the cam 17 and not in the rail remote guide 17c, so that the driver 15 in the opening movement on 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 is biased by a tension spring 31. The other end of the tension spring 31 engages the hinge axis, which connects the lever 16 with the intermediate lever 18. In the figure shown, the access to the rail further guide 17c is blocked by the deflector 30, so that the driver 15 is forced to enter during the opening movement in the rail-near guide 17b. If, on the other hand, the starting element 11 is moved in the ejection direction A after proper triggering of the touch-latch device 21, then the free elastic end of the deflector 30 is pulled into a position further away from the rail by the hinged tension spring 31 so that the catch 15 engages in the guide 17c can occur, along this shifted and the free end 16 b of the lever 16 can act properly.

Fig. 8 shows the extension guide 5 with the adapter 8 connected thereto, wherein the two-armed lever 16 has a direction-dependent overload protection. This overload protection is realized in that the two-armed lever 16 has two lever parts 32 and 33 which can be bent relative to one another. The first lever part 32 is pivotally mounted about the rotation axis R, while the second lever part 33 is connected to the first lever part 32 via a pivot bearing K. If the drawer 3 should be in an open position and the touch-latch device 21 has already triggered, then the driver 15 can pivot the second lever part 33 relative to the first lever part 32 during the insertion movement, so that the catch 15 is bent by a buckling of the two Lever parts 32 and 33 can be reset to each other in a starting position for the next opening operation of the drawer 3. In contrast, in the opposite direction, the driver 15 again act on the lever parts 32 and 33 folded out relative to one another, 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 relative to each other (FIG. 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. related to the usual installation position of the components used as well as the figure and are in a change in position mutatis mutandis to the new situation transfer. 17.6

Claims (16)

Austrian Patent Office AT 508 139 B1 2010-11-15 Claims 1. Furniture drive for moving a movable furniture part with a touch-latch device, the at least one force memory to be loaded manually by a user and at least one starting element for ejecting the movable furniture part from a closed position in an open position, wherein the loading of the force accumulator takes place by a movement of the movable furniture part and a transmission mechanism when opening the movable furniture part, characterized in that the transmission mechanism (22) has at least one pivotally mounted lever (16), on the one hand with the Start 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. 2. 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) against the Ejecting direction (A) is moved and thus the energy storage device (28) of the touch-latch device (21) loads. 3. Furniture drive according to claim 2, characterized in that the energy accumulator (28) comprises at least one spring (28a). 4. Furniture drive according to one of claims 1 to 3, characterized in that the lever (16) is designed as a two-armed lever (16). 5. Furniture drive according to claim 4, characterized in that a first end (16 a) of the two-armed lever (16), preferably via an intermediate lever (18), with the starting element (11) of the touch-latch device (21) coupled or constantly connected to this. 6. 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 part attached thereto is detachably coupled. 7. Furniture drive according to one of claims 4 to 6, characterized in that the two-armed lever (16) is mounted on or on an adapter (8), wherein the adapter (8) with a on a furniture body (2) to be fastened cabinet rail (8). 6) a drawer denausziehführung (5) is connected or detachably connectable. 8. Furniture drive according to claim 7, characterized in that the adapter (8) has a substantially plate-shaped base part (9) which is connected on the one hand with the carcass rail (6) or detachably connectable and on the side of the carcass rail (6) carries the touch-latch device (21). 9. Furniture drive according to one of claims 1 to 8, characterized in that an attachment (13) is provided, which is fastened to a drawer rail (7) of a drawer pull-out guide (5) or fastened and in the mounting position of the drawer rail (7 ) projects laterally, wherein the attachment (13) carries a stop (12) for the starting element (11). 10. Furniture drive according to claim 9, characterized in that the attachment (13) has a driver (15) which cooperates with the transmission mechanism (22), preferably with the two-armed lever (16). 11. Furniture drive according to claim 10, characterized in that the driver (15) fixed to the attachment (13) is arranged. 12. Furniture drive according to claim 10, characterized in that the driver (15) on a to the attachment (13) pivotally mounted control lever (14) is formed, in a control cam (17) of the base part (9) of the adapter (8) out is. 7/17 Austrian Patent Office AT 508 139 B1 2010-11-15 13. Furniture drive according to one of claims 1 to 12, characterized in that the movable furniture part (3) is a movable rail (7) of a drawer extension guide (5). 14. drawer extension with a furniture drive according to one of claims 1 to 13. 15. drawer pull-out according to claim 14, characterized in that the drawer pull-out (5) to a furniture body (2) to be fastened carcass rail (6) and at least one relatively movable drawer rail (7) and optionally one between the carcass rail (6) and the Store rail (7) slidably mounted center rail, wherein the drawer rail (7) and / or the center rail is movable from a closed end position to an open position by the furniture drive. 16. Furniture with a drawer extension according to claim 14 or 15. For this 9-sheet drawings 8/17