EP3117060B1 - Actuator arm for a furniture flap - Google Patents
Actuator arm for a furniture flap Download PDFInfo
- Publication number
- EP3117060B1 EP3117060B1 EP15705474.3A EP15705474A EP3117060B1 EP 3117060 B1 EP3117060 B1 EP 3117060B1 EP 15705474 A EP15705474 A EP 15705474A EP 3117060 B1 EP3117060 B1 EP 3117060B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- actuating
- adjusting
- actuating arm
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
- E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
- E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
- E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
- E05F1/1058—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
- E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
- E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
- E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
- E05F1/1261—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/14—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with double-acting springs, e.g. for closing and opening or checking and closing no material
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D3/00—Hinges with pins
- E05D3/06—Hinges with pins with two or more pins
- E05D3/16—Hinges with pins with two or more pins with seven parallel pins and four arms
- E05D2003/163—Horizontal pivot-axis
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D3/00—Hinges with pins
- E05D3/06—Hinges with pins with two or more pins
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D3/00—Hinges with pins
- E05D3/06—Hinges with pins with two or more pins
- E05D3/16—Hinges with pins with two or more pins with seven parallel pins and four arms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D7/00—Hinges or pivots of special construction
- E05D7/04—Hinges adjustable relative to the wing or the frame
- E05D7/0407—Hinges adjustable relative to the wing or the frame the hinges having two or more pins and being specially adapted for cabinets or furniture
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/606—Accessories therefor
- E05Y2201/618—Transmission ratio variation
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/638—Cams; Ramps
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets
Definitions
- the invention further relates to an arrangement with a flap of a piece of furniture and with an actuator of the type to be described.
- Actuators of this type can use a lever mechanism as a dead center mechanism ( DE 102 03 269 A1 ), the spring device exerting a closing force on the actuating arm near the closed position and, after a dead center position has been exceeded - in which the connecting joints of the lever and the force vectors acting on one line - exerts a torque in the opening direction.
- Dead center mechanisms with a control cam and pressure roller arrangement are also known ( DE 10 2004 019 785 A1 ), in which the control cam is contoured in such a way that the change in the torque acting on the actuating arm takes place after passing through a dead center position.
- the force of the spring device is to be adapted by an adjusting device according to the weight of the furniture flap to be moved, ie the spring device must also apply a correspondingly high torque to the actuating arm in the opening direction with heavy furniture flaps.
- this setting also affects the locking force of the actuating arm, which means that the furniture flap also has a correspondingly large locking force in the opening direction when the torque of the actuating arm is high the closed position is held.
- This high locking force then has to be overcome by a user when opening the flap by applying considerable manual force up to the dead center position of the actuating arm, whereupon the spring device supports the further opening movement.
- flap fittings are in the DE 102 03 269 A1 , in the EP 1 154 109 A1 and in the DE 26 48 085 A1 described.
- an actuator for furniture flaps which can be switched between different operating modes by a switching device.
- a hinge axis which connects two levers of the actuator to one another, can be adjusted along a guide.
- a closing force is exerted on the actuating arm in or near the closed position, so that a furniture flap connected to the actuating arm is also drawn into the closed end position towards the end of the closing movement.
- an opening force is exerted on the actuating arm, so that the actuating arm already has an opening effect in the closed position.
- the EP2309086A1 and the US2007 / 0124893 A1 also disclose generic actuators.
- the object of the invention is to provide an actuator with a simple setting option, with a reduced locking force of the actuating arm in the closed position being able to be brought about even at high torques in the opening direction.
- the actuator has a coupling device which couples the spring device, the axis of rotation of the actuating arm and the actuator with one another, whereby by adjusting the actuator in or on the guide, both the position of the dead center of the actuating arm and that in the opening direction acting force of the spring device on the actuating arm is adjustable so that when the force acting in the opening direction is increased, that pivoting angle of the actuating arm at which the position of the dead center is present can also be reduced.
- the pivot angle of the actuating arm at which the dead center position is present can be reduced by a single adjustment device and thus adjusted closer in the direction of 0 ° opening angle, which corresponds to the closed end position of the furniture flap.
- the resulting phase shift of the torque curve by a specified amount in the direction of the closed end position of the actuating arm can - even with high pretensioning forces in the opening direction - bring about a lower and more uniform locking force in the closed end position of the flap (see the description for Fig. 1 ).
- the guide can have an essentially straight shape at least in sections and / or at least in sections a curved shape.
- the geometric selection of the guide which has both a horizontal component and a vertical component in the assembly position, can be used to determine the extent to which the dead center position and the spring force acting in the opening direction are set by selecting the slope of the guide.
- the horizontal component determines the torque acting on the actuator arm in the opening direction.
- the vertical component of the guide determines the Dead center position of the actuator arm. Assuming, for example, that the guide is designed as a straight line with a 45 ° gradient, an adjustment of the actuator in or along this guide would result in a ratio of 1: 1, so that the adjustment of the dead center position and the adjustment of the torque acting in the opening direction takes place on the actuating arm in each case to the same extent.
- the setting device when the setting device is actuated, the setting of the position of the dead center of the actuating arm and the setting of the force of the spring device acting in the opening direction on the actuating arm take place simultaneously.
- This of course depends on the shape of the guide. If the actuator interacts exclusively with a component of the guide that is horizontal in the assembly position when setting in or along the guide, only the force of the spring device acting in the opening direction on the actuator arm is changed without the dead center position being adjusted. If, on the other hand, the actuator interacts with a component of the guide that is vertical in the assembly position during adjustment in or along the guide, the position of the dead center is also adjusted.
- the position of the dead center of the actuating arm - starting from the fully closed position of the actuating arm - can be variably adjusted between 10 ° and 30 °, preferably between 15 ° and 25 °.
- Fig. 1 shows a diagram of the torque curves (torque M in Newton meters, Nm) depending on the opening angle (in degrees, ⁇ ) of the flap 3 of a piece of furniture 1.
- the characteristic curve A shows the (theoretical) curve of the torque plotted over the angular position of the flap 3. which is to be applied by the actuator 4, the flap 3 being accelerated by the actuator 4 neither in the opening direction nor in the closing direction and is thus kept balanced.
- This characteristic curve A corresponds to the maximum setting of the torque in the opening direction, which must therefore be provided for heavy furniture flaps 3. Starting from a 0 ° opening angle of the flap 3, it is opened over an opening angle range, the maximum of the characteristic curve A being at approximately 90 ° opening angle of the flap 3. At an opening angle of 90 ° of the flap 3, the actuator 4 must provide the highest torque so that the flap 3 is automatically held in this position by the force of the spring device 8.
- the characteristic curve B shows the (theoretical) course of the torque plotted against the angular position of the flap 3, which is to be applied by the actuator 4, the flap 3 being accelerated by the actuator 4 neither in the opening direction nor in the closing direction and thus kept balanced.
- This characteristic curve B corresponds to minimum setting of the torque in the opening direction, which is to be provided for light furniture flaps 3.
- the maximum of this characteristic curve B is also at 90 ° opening angle of the flap 3, the torque provided by the actuator 4 in the opening direction being less than that according to characteristic curve A.
- the characteristic curve C1 shows the course of the torque exerted by the actuator 4 on the actuator arm 5 and thus on the flap 3.
- This characteristic curve corresponds to the maximum setting of the torque in the opening direction (when using heavy furniture flaps 3), whereby an approximation of characteristic curve A is achieved for large angular positions - without taking into account the friction - from an open position of about 40 ° of the flap 3.
- a negative force is exerted on the flap 3, so that the flap 3 is held in the closed end position with a locking force.
- the flap 3 After passing through a dead center T1, the flap 3 is subjected to a high torque in the opening direction.
- the actuator 4 When the flap 3 is closed again, the actuator 4 also exerts a high locking force (-4.8 Nm) on the flap 3 due to the high torque in the opening direction after the dead point T1 has passed. This high locking force has to be overcome every time by a user by exerting force on the flap 3.
- the characteristic curve C2 shows the course of the torque exerted by the actuator 4 on the actuating arm 5 and thus on the flap 3 with a minimum setting of the torque acting in the opening direction, which is to be provided for light furniture flaps 3.
- This low torque in the opening direction also leads to a lower locking force (-1.6 Nm) after passing through dead center T1, which a user has to overcome when opening the flap 3 without great effort.
- the minimum or maximum spring force is set (characteristic curve C1 and characteristic curve C2) there is a considerable difference in the locking force (namely -1.4 Nm and -4.8 Nm), which is important for the person operating the flap 3 must open is disadvantageous.
- the invention is now based on the basic idea of realizing the position of the dead center of the actuating arm 5 in an adjustable manner, so that the position of the dead center T1 continues in Adjusted towards the closed position of the flap 3 and is now positioned at dead center T2.
- the characteristic curve D shows the torque curve of the actuator 4 with the maximum spring force set in the opening direction (that is, when using heavy flaps 3).
- the actuating arm 5 passes through the dead center T2, whereby the shifted position of the dead center T2 on the basis of the diagram also makes it immediately clear that the locking force increases at a 0 ° opening angle of the flap 3 (but with the same torque in the opening direction like characteristic curve C1) significantly reduced by the force difference ⁇ M (-2.4 Nm instead of -4.8 Nm, i.e. by half).
- Fig. 2a shows a piece of furniture 1 with a furniture body 2 and a flap 3 which can be moved upward relative to it and which is movably supported by actuators 4.
- two actuating drives 4 are attached to opposite side walls of the furniture body 2.
- the actuating drives 4 each have a housing 6 and at least one actuating arm 5 protruding from the housing 6, which in the assembled position is pivotably mounted about a horizontally running axis of rotation 13 and is connected to the flap 3.
- the flap 3 can be moved, starting from a vertical closed position, into an open position located above the furniture body 2.
- FIG. 2b shows a possible embodiment of an actuator 4 in a perspective view.
- a spring device 8 (preferably with one or more compression springs) is supported in a stationary manner with one end region on a spring base 9 on a base plate 7 to be fastened to the furniture body 2.
- a transmission mechanism 10 is provided which has a Fixed axis of rotation 12 includes pivotably mounted, two-armed lever 11 with two lever ends.
- a first lever end of the two-armed reversing lever 11 is connected to the spring device 8 via a first joint 16, and a second lever end of the reversing lever 11 is connected to a thrust lever 15 via a second joint 17.
- An actuator 19 is arranged at an end of the push lever 15 facing away from the joint 17.
- a coupling device 18 is provided which couples the spring device 8, the axis of rotation 13 of the actuating arm 5 and the actuator 19 to one another.
- the coupling device 18 has a lever 22 with a guide 21 that can be pivoted about a stationary hinge axis 20.
- the position of the actuator 19 is adjustable by an adjusting device 23 (not shown here), so that by adjusting the actuator 19 in or on this guide 21 both the position of the dead center T1.
- T2 of the actuating arm 5 as well as the force of the spring device 8 acting in the opening direction on the actuating arm 5 is adjustable.
- the position of the actuator 19 is in a position adjacent to the fixed hinge axis 20 of the lever 22, so that the force arm formed between the hinge axis 20 and the actuator 19 is small and the torque acting on the actuator arm 5 in the opening direction is minimal .
- This setting of the actuator 19 relative to the guide 21 is consequently used to move light furniture flaps 3 and corresponds to the characteristic curve C2 according to FIG Fig. 1 .
- Fig. 3a shows a cross-section of the actuator 4, the spring device 8 being supported on the spring base 9 on the base plate 7.
- the spring device 8 presses with a force F1 against the two-armed deflection lever 11.
- the spring device 8 is connected to a first lever end of the deflection lever 11 via a joint 16, the joint 16 being immovably mounted relative to the fixed axis of rotation 12 of the deflection lever 11.
- the distance between the joint 16 (on which the spring device 8 acts) and the fixed axis of rotation 12 of the reversing lever 11 cannot therefore be changed. This is very advantageous insofar as no adjustment path of the spring device 8 relative to the axis of rotation 12 of the reversing lever 11 has to be provided for setting the spring force.
- the arrangement here of voluminous threaded spindles are dispensed with, as a result of which the actuator 4 can assume a very compact design.
- the second lever end of the reversing lever 11 is connected to the push lever 15 via a joint 17, the push lever 15 being pressed by the force of the spring device 8 in the direction of the force F2.
- the lever 22 of the coupling device 18 is pivotably mounted about a fixed hinge axis 20, the position of the actuator 19 being adjustable in or along the guide 21 by an adjusting device 23 having an adjusting wheel 24.
- the adjusting wheel 24 can have a receptacle for an actuating tool, the position of the actuator 19 relative to the guide 21 being adjustable by rotating the receptacle by means of the actuating tool.
- the adjusting wheel 24 is provided with a threaded section 25 which engages with a threaded receptacle 27 of an adjusting lever 26.
- the threaded receptacle 27 is movably arranged on the lever 26 to compensate for lateral forces.
- the adjusting lever 26 is connected on the one hand to the actuator 19 and on the other hand via a moving joint axis 28 to an intermediate lever 29, which in turn is connected to the actuating arm 5 via a joint 30.
- Figure 3b shows the coupling device 18 with the adjusting device 23 in an enlarged view.
- the adjusting lever 26 which is pivotably mounted about the moving hinge axis 28, can be pivoted together with the actuator 19 relative to the lever 22, the position of the actuator 19 in or along the guide 21 of the lever 22 being adjustable .
- the setting device 23 By means of the setting device 23, the position of the actuator 19 in the direction of the joint axis 20 of the lever 22 can be adjusted towards and away from it, the relative distance between the actuator 19 and the joint axis 20 of the lever 22 in the direction X ( Fig. 4 ) along an imaginary connecting line 35 between the actuator 19 and the hinge axis 20 of the lever 22 can be reduced and enlarged.
- the force of the spring device 8 acting in the opening direction on the actuating arm 5 can be adjusted.
- the position of the actuator 19 can be set in a direction Y running transversely to the said imaginary connecting line 35, whereby the position of the dead center T1, T2 of the actuating arm 5 can be changed.
- the lever 22 of the coupling device 18 is on the one hand pivotable about the stationary hinge axis 20, on the other hand the lever 22 with the intermediate lever 29 is above the two migrating joint axes 31 and 28 in connection.
- a damping device 32 Fig.
- the last closing path of the actuating arm 5 can be dampened up to the completely closed end position.
- the hinge axis 31 strikes the piston of the damping device 32 and moves it relative to the cylinder against the resistance of a damping fluid.
- Fig. 4 shows a cross section of the actuator 4, the actuator 19 being adjusted to the other end of the guide 21 by turning the adjusting wheel 24 of the adjusting device 23.
- the actuating arm 5 is in a compared to the Figures 3a and 3b adjusted dead center position T2.
- the joint 17, the actuator 19 and the joint axis 20 of the lever 22 are on a common, imaginary connecting line 35.
- the relative distance of the actuator 19 relative to the joint axis 20 of the lever 22 was increased so that the force arm formed between the actuator 19 and the hinge axis 20 is enlarged and thus the torque acting in the opening direction on the actuator arm 5 has also been increased.
- the position of the actuator 19 is also adjustable in a direction Y running transversely to the said imaginary connecting line 35, so that in addition to the force of the spring device 8 acting in the opening direction, the position of the dead center T1, T2 of the actuating arm 5 is also adjustable.
- This setting of the actuator 19 relative to the guide 21 is consequently used to move heavy furniture flaps 3 and corresponds to the characteristic curve D according to FIG Fig. 1 .
- the actuator 4 comprises a longitudinally extended main lever 33 which is pivotably connected to the base plate 7 via an articulated lever 34.
- This main lever 33 is connected to the lever 22 via the hinge axis 36.
- the lever 22 is, on the one hand, pivotably connected to the base plate 7 about the stationary hinge axis 20 and, on the other hand, pivotably connected to the intermediate lever 29 via the moving hinge axis 31.
- the lever 22 is supported on the moving joint axis 28, about which the adjusting lever 26 is pivotably mounted.
- the intermediate lever 29 is connected to the actuating arm 5 via the joint 30.
- Fig. 5 shows the actuator 4 in an exploded view.
- the spring device 8 is supported in an articulated manner on the base plate 7 on a spring base 9.
- the transmission mechanism 10 comprises a two-armed deflection lever 11, pivotably mounted about a fixed axis of rotation 12, with two lever ends, a first lever end interacting with the spring device 8 and a second lever end - directly or indirectly - with the adjustable actuator 19.
- the spring device 8 is connected via a joint 16 to the first lever arm of the two-armed reversing lever 11 which is pivotably mounted about the axis of rotation 12.
- the second lever arm of the reversing lever 11 is connected to the multiply curved push lever 15 via a further joint 17.
- the thrust lever 15 has an opening 37 through which a hinge pin designed as an actuator 19 extends.
- the actuator 19 is adjustably mounted by an adjusting device 23 with an adjusting wheel 24 in or along - preferably continuously curved - guides 21 of the lever 22 so that the position of the point of application of the push lever 15 on the lever 22 can be changed relative to the pivot axis 20 of the lever 22 .
- the lever 22 and the adjusting lever 26 are pivotably connected to one another via the hinge axis 28.
- the threaded receptacle 27 for receiving the threaded section 25 of the adjusting wheel 24 is movably connected to the adjusting lever 26.
- the main lever 36 is connected to the lever 22 via the hinge axis 36.
- the intermediate lever 29 is connected on the one hand to the lever 22 via the hinge axes 31 and 28, and on the other hand to the actuating arm 5 via the hinge 30.
- a fitting 38 is to be fastened to the flap 3 of the piece of furniture 1, the actuating arm 5 being releasably connectable to this fitting 38 via a snap connection.
- the actuating arm 5 is preloaded on the one hand in a first pivot area in the direction of the outer end position by means of the spring device 8 and, starting from this dead center position, in a second pivot area in the direction of the inner end position also by means of this Spring device 8 is applied.
- Fig. 6 shows an embodiment of an actuator 4 in a longitudinal section, the transmission mechanism 10 having an actuator 46 coupled to the actuator arm 5 in motion, a control cam 39 formed thereon and a pressure piece 40 loaded by the spring device 8, the pressure piece 40 when the Adjusting arm 5 can be moved along the control curve 39 of the adjusting part 46.
- the pressure piece 40 is designed as a pressure roller 41 which is rotatably mounted about the actuator 19 and which runs along the control curve 39 of the actuator 46 when the actuator arm 5 moves.
- the control cam 39 is formed by a circumferential surface of the actuating part 46 that is radially spaced apart relative to the axis of rotation 13.
- the control cam 39 is designed as an adjusting contour which is eccentric relative to the axis of rotation 13 and which influences the movement behavior of the flap 3 in terms of force, so that the rotatably mounted pressure roller 41 exerts a torque on the adjusting arm 5 that is dependent on the pivoting position of the adjusting arm 5.
- the actuating part 46 is formed in one piece with the actuating arm 5, but it is of course also possible to move the actuating part 46, which is coupled to the actuating arm 5 and with the control cam 39 formed thereon, at a different position along the position between the spring device 8 and the actuating arm 5 formed power train to be arranged.
- the spring device 8 comprises a spring holder 47 with two parts 43 and 44 which can be moved relative to one another, between which several compression springs 48 ( Fig. 9 ) are included.
- a first part 43 of the spring holder 47 is supported on the spring base 9, the spring-loaded part 44, which is displaceable relative thereto, is connected via a hinge 42 to an adjusting lever 26, which is pivotably mounted on the lever 22 of the coupling device 18 about the moving hinge axis 28.
- the coupling device 18, which couples the spring device 8, the axis of rotation 13 of the actuating arm 5 and the actuator 19 with one another, comprises a lever 22 pivotable about a fixed hinge axis 20 with a guide 21 along which the actuator 19 is mounted to be adjustable to a limited extent by an adjusting device 23 .
- the actuator 19 with the rotatable pressure roller 41 mounted on it is arranged on an adjusting lever 26 which is pivotably connected to the lever 22 via a moving hinge axis 28.
- the threaded section 25 of an adjusting screw can be rotated by a rotary movement of the adjusting wheel 24 of the setting device 23 brought about by means of an actuating tool, so that the threaded receptacle 27 can be moved along the threaded section 25 and thus the pivot position of the adjusting lever 26 relative to the lever 22 can also be adjusted.
- This adjustment of the Adjusting lever 26, the position of the actuator 21 arranged thereon (and thus the position of the pressure roller 41) along the guide 21 can also be adjusted.
- the adjusting lever 26 has a contour 45 in the form of a curved elongated hole, so that the adjusting lever 26 with the pressure roller 41 can also be moved relative to the lever 22 during a pivoting movement of the adjusting arm 5, that is, the threaded receptacle 27 is when the adjusting arm 5 moves along the Contour 45 of the adjusting lever is movably supported.
- the dead center of the transmission mechanism 10 is also determined by an apex of the control cam 39, ie by that area of the control cam 39 which has the greatest radial distance with respect to the axis of rotation 13 of the actuating arm 5.
- T2 of the transmission mechanism 10 and the preload of the spring device 8 are adjustable.
- the setting shown of the actuator 19 relative to the guide 21 is used to move light furniture flaps 3 and corresponds to the characteristic curve C2 according to FIG Fig. 1 .
- Figures 7a and 7b show side views of the actuator 4 according to Fig. 6 each with an actuating arm 5 in the fully closed position.
- Figure 7a shows the setting of the actuator 19 relative to the guide 21, this setting being used for moving light flaps 3.
- the bias of the spring device 8 is relatively low, which can be seen from the spaces formed between the spring coils.
- Figure 7b shows, however, the setting of the actuator 19, which is compared to Figure 7a at the other end of the guide 21 is located.
- This setting of the actuator 19 relative to the guide 21 according to FIG Figure 7b is used for heavy furniture flaps 3.
- the bias of the spring device 8 is very high, which can be seen from the direct contact between the spring coils of the compression springs 48. Based on a comparison of the spring device 8 according to FIG Figures 7a and 7b the different bias of the spring device 8 is clearly evident.
- Figures 8a and 8b show side views of the actuator 4, each with an actuator arm 5 in differently set dead center positions.
- the setting of the actuator 19 relative to the guide 21 according to FIG Figure 8a corresponds to that according to Figure 7a , this setting being provided for moving flaps 3 more easily.
- the spring device 8 according to Figure 8a is slightly biased, the dead center position T1 of the actuating arm 5 is - starting from the completely closed end position of the actuating arm 5 - at an opening angle of about 16 °.
- the setting of the actuator 19 relative to the guide 21 according to Figure 8b is therefore provided for moving heavy flaps 3.
- the spring device 8 according to Figure 8a is more compressed, whereby the spring device 8 exerts a correspondingly high torque in the opening direction on the actuating arm 5 after overcoming the dead center position, although the locking force of the actuating arm 5 can be kept low in the closed position.
- the dead center position T2 of the actuating arm 5 can be reduced in size - starting from the completely closed end position of the actuating arm 5 - by adjusting the actuator 19 along the guide 21 and is in the position shown Figure 8b at an opening angle of about 13 °.
- the distance between the actuator 19 and the fixed joint axis 20 and, on the other hand, the position of the moving joint axis 28 relative to the fixed joint axis 20 can be changed, which results in different lever ratios in addition to a changed dead center position.
- the setting shown of the actuator 19 relative to the guide 21 is used for heavy furniture flaps 3 and corresponds to the characteristic curve D according to FIG Fig. 1 .
- Fig. 9 shows an exploded view of the actuator 4 according to the embodiment of FIG Figures 6 , 7a , 7b , 8a, 8b .
- the spring device 8 comprises a spring holder 47 with a first part 43 which is supported on the spring base 9. This first part 43 is provided with rods 49 which are provided for the optional and exchangeable accommodation of two or more compression springs 48.
- the second part 44 of the spring holder 47 loaded by the compression springs 48 engages the lever 22 via a joint 42.
- the lever 22 is mounted so as to be pivotable about a stationary hinge axis 20 relative to the base plate 7.
- a pivotably mounted adjusting lever 26 with a contour 45 for the displaceable mounting of a threaded receptacle 27 is arranged via a moving hinge axis 28 facing away from the lever 22.
- This threaded receptacle 27 has a cylindrical circumferential surface and is provided for receiving a threaded section 25 which can be rotated via an adjusting wheel 24 of an adjusting device 23.
- the adjusting lever 26 can be adjusted towards and away from the adjusting wheel 24, so that the actuator 19 mounted on the adjusting lever 26 with the pressure pieces 40 mounted thereon in the form of pressure rollers 41 can be adjusted along a guide 21 arranged on the lever 22 is.
- the actuator 19, which can be adjusted by the setting device 23, is connected in a movement-coupled manner to the pressure roller 41, whereby it is preferably provided that the adjustable actuator 19 forms the axis of rotation for the rotatable pressure roller 41.
- the pressure pieces 40 in the form of the pressure rollers 41 are mounted such that they can be moved along control cams 39 by actuating parts 46.
- the actuating parts 46 are designed in one piece together with the actuating arms 5 and are mounted pivotably about the fixed axis of rotation 13.
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Description
Die vorliegende Erfindung bezieht sich auf einen Stellantrieb zum Bewegen einer Klappe eines Möbels, umfassend:
- zumindest einen schwenkbar gelagerten Stellarm zum Bewegen der Klappe,
- eine Federvorrichtung zur Kraftbeaufschlagung des Stellarmes,
- einen Übertragungsmechanismus zum Übertragen einer Kraft der Federvorrichtung auf den Stellarm in Schließrichtung und nach Überschreitung eines Totpunktes zur Übertragung einer Kraft der Federvorrichtung auf den Stellarm in Öffnungsrichtung,
- eine Einstellvorrichtung, durch welche ein Stellglied des Stellantriebes in oder an einer Führung in seiner Lage verstellbar ist.
- at least one pivotably mounted actuating arm for moving the flap,
- a spring device for applying force to the actuating arm,
- a transmission mechanism for transmitting a force of the spring device to the actuating arm in the closing direction and, after a dead center has been exceeded, for transmitting a force of the spring device to the actuating arm in the opening direction,
- an adjusting device by which an actuator of the actuator can be adjusted in its position in or on a guide.
Im Weiteren betrifft die Erfindung eine Anordnung mit einer Klappe eines Möbels und mit einem Stellantrieb der zu beschreibenden Art.The invention further relates to an arrangement with a flap of a piece of furniture and with an actuator of the type to be described.
Stellantriebe dieser Art können als Totpunktmechanismus ein Hebelwerk (
Die Kraft der Federvorrichtung ist durch eine Einstellvorrichtung entsprechend dem Gewicht der zu bewegenden Möbelklappe anzupassen, d.h. die Federvorrichtung muss bei schweren Möbelklappen auch ein entsprechend hohes Drehmoment auf den Stellarm in Öffnungsrichtung aufbringen. Bei Stellantrieben mit einem Totpunktmechanismus wirkt sich diese Einstellung aber auch auf die Zuhaltekraft des Stellarmes aus, was dazu führt, dass die Möbelklappe bei einem hohen Drehmoment des Stellarmes in Öffnungsrichtung auch mit einer entsprechend großen Zuhaltekraft in der Schließstellung gehalten ist. Diese hohe Zuhaltekraft muss dann von einem Benutzer beim Öffnen der Klappe durch erheblichen manuellen Kraftaufwand bis hin zur Totpunktlage des Stellarmes überwunden werden, woraufhin die Federvorrichtung die weitere Öffnungsbewegung unterstützt.The force of the spring device is to be adapted by an adjusting device according to the weight of the furniture flap to be moved, ie the spring device must also apply a correspondingly high torque to the actuating arm in the opening direction with heavy furniture flaps. In the case of actuators with a dead center mechanism, this setting also affects the locking force of the actuating arm, which means that the furniture flap also has a correspondingly large locking force in the opening direction when the torque of the actuating arm is high the closed position is held. This high locking force then has to be overcome by a user when opening the flap by applying considerable manual force up to the dead center position of the actuating arm, whereupon the spring device supports the further opening movement.
Solche Klappenbeschläge sind in der
Eine Weiterentwicklung ist in der
In der
Die
Dies wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Weitere Ausgestaltungen der Erfindung sind in den abhängigen Unteransprüchen angegeben.According to the invention, this is achieved by the features of
Gemäß der Erfindung ist also vorgesehen, dass der Stellantrieb eine Koppelvorrichtung aufweist, welche die Federvorrichtung, die Drehachse des Stellarmes und das Stellglied miteinander koppelt, wobei durch Verstellen des Stellgliedes in oder an der Führung sowohl die Lage des Totpunktes des Stellarmes als auch die in Öffnungsrichtung wirkende Kraft der Federvorrichtung auf den Stellarm veränderbar einstellbar ist, sodass bei einer Vergrößerung der in Öffnungsnchtung wirkenden Kraft auch jener Schwenkwinkel des Stellarmes, bei der die Lage des Totpunktes vorliegt verkleinerbar ist.According to the invention, it is provided that the actuator has a coupling device which couples the spring device, the axis of rotation of the actuating arm and the actuator with one another, whereby by adjusting the actuator in or on the guide, both the position of the dead center of the actuating arm and that in the opening direction acting force of the spring device on the actuating arm is adjustable so that when the force acting in the opening direction is increased, that pivoting angle of the actuating arm at which the position of the dead center is present can also be reduced.
Mit anderen Worten kann durch eine einzige Einstellvorrichtung jener Schwenkwinkel des Stellarmes, bei welchem die Totpunktlage vorliegt, verkleinert und so näher in Richtung 0° Öffnungswinkel, welcher der geschlossenen Endlage der Möbelklappe entspricht, verstellt werden. Durch die dadurch herbeigeführte Phasenverschiebung des Drehmomentverlaufes um einen vorgegebenen Betrag in Richtung der geschlossenen Endlage des Stellarmes kann - selbst bei hohen Vorspannkräften in Öffnungsrichtung - eine geringere und eine gleichmäßiger wirkende Zuhaltekraft in der geschlossenen Endlage der Klappe herbeigeführt werden (siehe dazu die Beschreibung zu
In diesem Zusammenhang kann vorgesehen sein, dass bei einer Betätigung der Einstellvorrichtung die Einstellung der Lage des Totpunktes des Stellarmes und die Einstellung der in Öffnungsrichtung wirkenden Kraft der Federvorrichtung auf den Stellarm gleichzeitig erfolgt. Dies ist selbstverständlich von der jeweiligen Formgebung der Führung abhängig. Wenn das Stellglied bei der Einstellung in oder entlang der Führung ausschließlich mit einer in Montagelage horizontalen Komponente der Führung zusammenwirkt, so wird lediglich die in Öffnungsrichtung wirkende Kraft der Federvorrichtung auf den Stellarm verändert, ohne dass dabei eine Verstellung der Totpunktlage erfolgt. Wenn hingegen das Stellglied bei der Einstellung in oder entlang der Führung mit einer in Montagelage vertikalen Komponente der Führung zusammenwirkt, so wird damit auch die Lage des Totpunktes verstellt.In this context it can be provided that when the setting device is actuated, the setting of the position of the dead center of the actuating arm and the setting of the force of the spring device acting in the opening direction on the actuating arm take place simultaneously. This of course depends on the shape of the guide. If the actuator interacts exclusively with a component of the guide that is horizontal in the assembly position when setting in or along the guide, only the force of the spring device acting in the opening direction on the actuator arm is changed without the dead center position being adjusted. If, on the other hand, the actuator interacts with a component of the guide that is vertical in the assembly position during adjustment in or along the guide, the position of the dead center is also adjusted.
Gemäß einem Ausführungsbeispiel kann vorgesehen sein, dass die Lage des Totpunktes des Stellarmes - ausgehend von der vollständigen Schließstellung des Stellarmes - zwischen 10° und 30°, vorzugsweise zwischen 15° und 25°, veränderbar einstellbar ist.According to one embodiment, it can be provided that the position of the dead center of the actuating arm - starting from the fully closed position of the actuating arm - can be variably adjusted between 10 ° and 30 °, preferably between 15 ° and 25 °.
Weitere Einzelheiten und Vorteile der gegenständlichen Erfindung werden anhand der in den Figuren gezeigten Ausführungsbeispiele erläutert. Dabei zeigt bzw. zeigen:
- Fig. 1
- eine Diagramm der Drehmomentverläufe in Abhängigkeit vom Öffnungswinkel der Klappe,
- Fig. 2a, 2b
- eine perspektivische Ansicht eines Möbels mit einem Möbelkorpus und einer relativ dazu hochbewegbaren Klappe, welche über Stellantriebe bewegbar gelagert ist, sowie einen Stellantrieb in einer perspektivischen Darstellung,
- Fig. 3a, 3b
- den Stellantrieb gemäß
Fig. 2b in einem Querschnitt sowie eine vergrößerte Detaildarstellung hierzu, - Fig. 4
- der Stellantrieb in einem Querschnitt, wobei das Stellglied in oder entlang der Führung verstellt wurde,
- Fig. 5
- eine Explosionsdarstellung des Stellantriebes,
- Fig. 6
- eine weitere Ausführungsform eines Stellantriebes, wobei der Stellarm durch eine Steuerkurven-Druckstück-Anordnung verschwenkbar gelagert ist,
- Fig. 7a, 7b
- Seitenansichten des Stellantriebes gemäß
Fig. 6 mit dem Stellglied in zwei verschiedenen Einstellungen, - Fig. 8a, 8b
- Seitenansichten des Stellantriebes mit dem Stellarm in zwei verschieden eingestellten Totpunktlagen,
- Fig. 9
- eine Explosionsdarstellung des Stellantriebes gemäß
den Figuren 6 ,7a ,7b ,8a, 8b .
- Fig. 1
- a diagram of the torque curves depending on the opening angle of the flap,
- Figures 2a, 2b
- a perspective view of a piece of furniture with a furniture body and a flap which can be raised relative to it and which is movably supported by actuators, and an actuator in a perspective illustration,
- Figures 3a, 3b
- the actuator according to
Figure 2b in a cross section as well as an enlarged detailed illustration of this, - Fig. 4
- the actuator in a cross-section, with the actuator being adjusted in or along the guide,
- Fig. 5
- an exploded view of the actuator,
- Fig. 6
- a further embodiment of an actuator, the actuating arm being pivotably mounted by a control cam-pressure piece arrangement,
- Figures 7a, 7b
- Side views of the actuator according to
Fig. 6 with the actuator in two different settings, - Figures 8a, 8b
- Side views of the actuator with the actuator arm in two differently set dead center positions,
- Fig. 9
- an exploded view of the actuator according to the
Figures 6 ,7a ,7b ,8a, 8b .
Die Kennlinie B zeigt den (theoretischen) Verlauf des Drehmomentes aufgetragen über der Winkelstellung der Klappe 3. welches vom Stellantrieb 4 aufzubringen ist, wobei die Klappe 3 vom Stellantrieb 4 weder in Öffnungsrichtung noch in Schließrichtung beschleunigt und somit austariert gehalten wird. Diese Kennlinie B entspricht der minimalen Einstellung des Drehmomentes in Öffnungsrichtung, was also bei leichten Möbelklappen 3 vorzusehen ist. Das Maximum dieser Kennlinie B liegt ebenfalls bei 90° Öffnungswinkel der Klappe 3, wobei das bereitgestellte Drehmoment des Stellantriebes 4 in Öffnungsrichtung geringer als jenes gemäß Kennlinie A ist.The characteristic curve B shows the (theoretical) course of the torque plotted against the angular position of the
Die Kennlinie C1 zeigt den Verlauf des vom Stellantrieb 4 auf den Stellarm 5 und damit auf die Klappe 3 ausgeübten Drehmomentes. Diese Kennlinie entspricht der maximalen Einstellung des Drehmomentes in Öffnungsrichtung (bei Verwendung von schweren Möbelklappen 3), wobei man für große Winkelstellungen - ohne Berücksichtigung der Reibung - ab etwa 40° Offenstellung der Klappe 3 eine Annäherung an die Kennlinie A erreicht. In der vollständigen Schließstellung (bei 0° Öffnungswinkel) wird auf die Klappe 3 eine negative Kraft ausgeübt, sodass die Klappe 3 mit einer Zuhaltekraft in der geschlossenen Endlage gehalten ist. Nach dem Durchlauf eines Totpunktes T1 wird die Klappe 3 mit einem hohen Drehmoment in Öffnungsrichtung beaufschlagt. Wenn die Klappe 3 wieder geschlossen wird, so wird vom Stellantrieb 4 nach dem Durchlauf des Totpunkes T1 aufgrund des hohen Drehmomentes in Öffnungsrichtung auch eine hohe Zuhaltekraft (-4,8 Nm) auf die Klappe 3 ausgeübt. Diese hohe Zuhaltekraft muss jedes Mal von einem Benutzer durch kraftvolle Zugausübung an der Klappe 3 überwunden werden.The characteristic curve C1 shows the course of the torque exerted by the
Die Kennlinie C2 zeigt den Verlauf des vom Stellantrieb 4 auf den Stellarm 5 und damit auf die Klappe 3 ausgeübten Drehmomentes bei minimaler Einstellung des in Öffnungsrichtung wirkenden Drehmomentes, was also bei leichten Möbelklappen 3 vorzusehen ist. Dieses niedrige Drehmoment in Öffnungsrichtung führt nach Durchlauf des Totpunktes T1 auch zu einer geringeren Zuhaltekraft (-1,6 Nm), welche durch einen Benutzer beim Öffnen der Klappe 3 ohne großen Kraftaufwand zu überwinden ist. Erkennbar ist, dass sich bei der Einstellung der minimalen bzw. maximalen Federkraft (Kennlinie C1 und Kennlinie C2) ein erheblicher Unterschied der Zuhaltekraft (nämlich - 1,4 Nm und -4,8 Nm) ergibt, was für jene Person, welche die Klappe 3 öffnen muss, nachteilig ist.The characteristic curve C2 shows the course of the torque exerted by the
Die Erfindung beruht nunmehr auf dem Grundgedanken, die Lage des Totpunktes des Stellarmes 5 einstellbar zu realisieren, sodass die Lage des Totpunktes T1 weiter in Richtung Schließstellung der Klappe 3 verstellt und nunmehr am Totpunkt T2 positioniert wird. Die Kennlinie D zeigt den Drehmomentverlauf des Stellantriebes 4 bei in Öffnungsrichtung maximal eingestellter Federkraft (also bei Verwendung schwerer Klappen 3). Wenn nun die Klappe 3 geschlossen wird, so durchläuft der Stellarm 5 den Totpunkt T2, wobei durch die verstellte Lage des Totpunktes T2 anhand des Diagramms auch unmittelbar einsichtig ist, dass sich die Zuhaltekraft bei 0° Öffnungswinkel der Klappe 3 (aber bei gleich hohem Drehmoment in Öffnungsrichtung wie Kennlinie C1) um die Kräftedifferenz ΔM erheblich reduziert (-2,4 Nm statt -4,8 Nm. also um die Hälfte). Somit wird durch eine verstellte Position des Totpunktes ausgehend von Totpunkt T1 zu Totpunkt T2 eine Phasenverschiebung des Drehmomentverlaufes (Kennlinie D statt Kennlinie C1) um einen Betrag ΔT herbeigeführt, sodass sich in der Schließstellung der Klappe (bei 0° Öffnungswinkel des Klappe 3) selbst bei hohem Drehmoment in Öffnungsrichtung eine geringe Zuhaltekraft ergibt, welche durch eine Person beim Öffnen der Klappe 3 problemlos zu überwinden ist. Diese Phasenverschiebung der Kennlinien C1, D um den Betrag ΔT ist auch bei 90° Öffnungswinkel der Klappe 3 gut erkennbar.The invention is now based on the basic idea of realizing the position of the dead center of the
Im gezeigten Ausführungsbeispiel weist die Koppelvorrichtung 18 einen um eine ortsfeste Gelenkachse 20 schwenkbaren Hebel 22 mit einer Führung 21 auf. In oder entlang dieser Führung 21 ist die Lage des Stellgliedes 19 durch eine (hier nicht ersichtliche) Einstellvorrichtung 23 einstellbar, sodass durch Verstellen des Stellgliedes 19 in oder an dieser Führung 21 sowohl die Lage des Totpunktes T1. T2 des Stellarmes 5 als auch die in Öffnungsrichtung wirkende Kraft der Federvorrichtung 8 auf den Stellarm 5 veränderbar einstellbar ist. In der gezeigten Figur befindet sich die Lage des Stellgliedes 19 in einer zur ortsfesten Gelenkachse 20 des Hebels 22 benachbarten Position, sodass der zwischen der Gelenkachse 20 und dem Stellglied 19 gebildete Kraftarm klein und damit das auf den Stellarm 5 in Öffnungsrichtung wirkende Drehmoment minimal eingestellt ist. Diese Einstellung des Stellgliedes 19 relativ zur Führung 21 wird folglich zum Bewegen leichter Möbelklappen 3 verwendet und entspricht der Kennlinie C2 gemäß
Der Stellantrieb 4 umfasst einen längserstreckten Haupthebel 33, der über einen Gelenkhebel 34 schwenkbar mit der Grundplatte 7 verbunden ist. Dieser Haupthebel 33 steht mit dem Hebel 22 über die Gelenkachse 36 in Verbindung. Der Hebel 22 ist einerseits um die ortsfeste Gelenkachse 20 schwenkbar an der Grundplatte 7 und andererseits über die wandernde Gelenkachse 31 schwenkbar mit dem Zwischenhebel 29 verbunden. Überdies stützt sich der Hebel 22 an der wandernden Gelenkachse 28 ab, um welche der Verstellhebel 26 schwenkbar gelagert ist. Der Zwischenhebel 29 ist mit dem Stellarm 5 über das Gelenk 30 verbunden.The
Die Federvorrichtung 8 umfasst einen Federhalter 47 mit zwei relativ zueinander verschiebbaren Teilen 43 und 44, zwischen denen mehrere Druckfedern 48 (
Die Koppelvorrichtung 18. welche die Federvorrichtung 8, die Drehachse 13 des Stellarmes 5 und das Stellglied 19 miteinander koppelt, umfasst einen um eine ortsfeste Gelenkachse 20 schwenkbaren Hebel 22 mit einer Führung 21. entlang der das Stellglied 19 durch eine Einstellvorrichtung 23 begrenzt verstellbar gelagert ist. Das Stellglied 19 mit der daran gelagerten, drehbaren Druckrolle 41 ist an einem Verstellhebel 26 angeordnet, der über eine wandernde Gelenkachse 28 schwenkbar mit dem Hebel 22 verbunden ist. Durch eine mittels einem Betätigungswerkzeug herbeigeführte Drehbewegung des Verstellrades 24 der Einstellvorrichtung 23 ist der Gewindeabschnitt 25 einer Einstellschraube verdrehbar, sodass die Gewindeaufnahme 27 entlang des Gewindeabschnittes 25 bewegbar ist und damit auch die Schwenklage des Verstellhebels 26 relativ zum Hebel 22 verstellbar ist. Durch diese Verstellung des Verstellhebels 26 ist auch die Lage des daran angeordneten Stellgliedes 21 (und damit die Lage der Druckrolle 41) entlang der Führung 21 einstellbar. Der Verstellhebel 26 weist eine Kontur 45 in Form eines gekrümmten Langlochs auf, damit sich bei einer Schwenkbewegung des Stellarmes 5 auch der Verstellhebel 26 mit der Druckrolle 41 relativ zum Hebel 22 bewegen lässt, d.h. die Gewindeaufnahme 27 ist bei einer Bewegung des Stellarmes 5 entlang der Kontur 45 des Verstellhebels bewegbar gelagert.The
Der Totpunkt des Übertragungsmechanismus 10 wird durch einen Scheitelpunkt der Steuerkurve 39 mitbestimmt, d.h. durch jenen Bereich der Steuerkurve 39, welcher in Bezug auf die Drehachse 13 des Stellarmes 5 den größten Radialabstand aufweist. Durch eine durch die Einstellvorrichtung 23 herbeigeführte Verstellung des Stellgliedes 19 mit der daran gelagerten Druckrolle 41 ist nunmehr sowohl die Lage des Totpunktes T1. T2 des Übertragungsmechanismus 10 als auch die Vorspannung der Federvorrichtung 8 einstellbar. Die in
Claims (6)
- An actuating drive (4) for moving a flap (3) of an item of furniture (1), comprising:- at least one actuating arm (5) pivotally mounted about a pivoting axis (13) for moving the flap (3),- a spring device (8) for applying a force to the actuating arm (5), the spring device (8) including at least one helical spring, preferably at least one compression spring (48),- a transmission mechanism (10) for transmitting a force from the spring device (8) to the actuating arm (5) in a closing direction and, after exceeding a position of a dead-center (T1, T2), for transmitting a force from the spring device (8) to the actuating arm (5) in an opening direction,- an adjusting device (23) for adjusting a position of an actuating portion (19) of the actuating drive (4) in or along a guide (21),- a coupling device (18) for coupling the spring device (8), the pivoting axis (13) of the actuating arm (5) and the actuating portion (19) to one another, the coupling device (18) including at least one lever (22) pivotally supported about a hinge axis (20), the guide (21) being arranged or formed on that lever (22),- wherein the actuating drive (4) includes one single adjusting device (23), wherein by adjusting the actuating portion (19) in or along the guide (21), the position of the dead-center (T1, T2) of the actuating arm (5) as well as a force of the spring device (8) acting towards the opening direction to the actuating arm (5) can be variably adjusted, so that, upon an increase of the force acting towards the opening direction, also a pivoting angle of the actuating arm (5), at which the position of the dead center (T1, T2) lies, can be reduced, wherein a pivoting angle of 0° corresponds to a fully closed position of the flap (3), wherein by the adjusting device (23), the position of the actuating portion (19) in or along the guide (21) can be adjusted in a direction towards and away from the hinge axis (20) of the lever (22), wherein the relative distance between the actuating portion (19) and the hinge axis (20) of the lever (22) can be reduced and enlarged along a notional connecting line (35) between the actuating portion (19) and the hinge axis (20) of the lever (22) in a direction (X), and wherein by the adjusting device (23), the position of the actuating portion (19) in or along the guide (21) can be adjusted in a direction (Y) extending transversely to said notional connecting line (35),
wherein either- the transmission mechanism (10) includes an actuating member (46) movement-coupled to the actuating arm (5), a control curve (39) and a pressure portion (40) pressurized by the spring device (8), the pressure portion (40) being configured to run along the control curve (39) upon a movement of the actuating arm (5), wherein by adjusting the actuating portion (19) in or along the guide (21), the position of the pressure portion (40) can be variably adjusted, the pressure portion (40) being configured as a rotatably supported pressure roller (41), and the actuating portion (19) forms the rotational axis of the pressure roller (41),
or- the transmission mechanism (10) includes a two-armed deflection lever (11) pivotably supported about a pivoting axis (12), the deflection lever (11) having two lever ends, wherein a first lever end co-operates with the spring device (8) and a second lever end co-operates with the actuating portion (19). - The actuating drive according to claim 1, characterized in that the adjusting device (23) is configured to variably adjust the position of the dead-center (T1, T2) of the actuating arm (5), starting from the fully closed position of the actuating arm (5), between 10° and 30°, preferably between 15° and 25°.
- The actuating drive according to the first variant of claim 1 and optionally according to claim 2, characterized in that the spring device (8) engages the actuating portion (19) via at least one pushing lever (15), and the pivoting axis (13) of the actuating arm (5) is coupled to the actuating portion (19) via at least one adjusting lever (26), wherein by adjusting the actuating portion (19) in or along the guide (21), the position of the pushing lever (15) as well as the position of the adjusting lever (26) relative to the lever (22) can be variably adjusted.
- The actuating drive according to the first variant of claim 1 or according to claim 3, characterized in that the spring device (8) is connected to the first lever end of the deflection lever (11) via at joint (16), and the joint (16) being non-adjustably arranged relative to the pivoting axis (12) of the deflection lever (11).
- The actuating drive according to one of the claims 1 to 4, characterized in that the adjusting device (23) includes an adjusting wheel (24), and by rotating the adjusting wheel (24), the position of the actuating portion (19) can be adjusted in or along the guide (21).
- An arrangement comprising a flap (3) of an item of furniture (1) and an actuating drive (4) according to one of the claims 1 to 5, wherein the flap (3) can be moved by the actuating drive (4) between a vertical closed position into an open position located above the furniture carcass (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20191340.7A EP3754143A1 (en) | 2014-03-13 | 2015-01-19 | Actuator for furniture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA179/2014A AT515493A1 (en) | 2014-03-13 | 2014-03-13 | Actuator for furniture flaps |
PCT/AT2015/000005 WO2015135005A1 (en) | 2014-03-13 | 2015-01-19 | Actuating drive for furniture flaps |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20191340.7A Division EP3754143A1 (en) | 2014-03-13 | 2015-01-19 | Actuator for furniture |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3117060A1 EP3117060A1 (en) | 2017-01-18 |
EP3117060B1 true EP3117060B1 (en) | 2020-08-26 |
Family
ID=52544223
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20191340.7A Withdrawn EP3754143A1 (en) | 2014-03-13 | 2015-01-19 | Actuator for furniture |
EP15705474.3A Active EP3117060B1 (en) | 2014-03-13 | 2015-01-19 | Actuator arm for a furniture flap |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20191340.7A Withdrawn EP3754143A1 (en) | 2014-03-13 | 2015-01-19 | Actuator for furniture |
Country Status (10)
Country | Link |
---|---|
US (1) | US9719283B2 (en) |
EP (2) | EP3754143A1 (en) |
JP (1) | JP6291076B2 (en) |
CN (1) | CN106103873B (en) |
AT (2) | AT515493A1 (en) |
DE (1) | DE202015009804U1 (en) |
ES (1) | ES2831425T3 (en) |
HU (1) | HUE051521T2 (en) |
RU (1) | RU2644040C1 (en) |
WO (1) | WO2015135005A1 (en) |
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2014
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-
2015
- 2015-01-19 DE DE202015009804.5U patent/DE202015009804U1/en active Active
- 2015-01-19 EP EP20191340.7A patent/EP3754143A1/en not_active Withdrawn
- 2015-01-19 WO PCT/AT2015/000005 patent/WO2015135005A1/en active Application Filing
- 2015-01-19 HU HUE15705474A patent/HUE051521T2/en unknown
- 2015-01-19 EP EP15705474.3A patent/EP3117060B1/en active Active
- 2015-01-19 JP JP2016549038A patent/JP6291076B2/en active Active
- 2015-01-19 ES ES15705474T patent/ES2831425T3/en active Active
- 2015-01-19 RU RU2016134731A patent/RU2644040C1/en active
- 2015-01-19 CN CN201580012651.5A patent/CN106103873B/en active Active
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2016
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Also Published As
Publication number | Publication date |
---|---|
JP6291076B2 (en) | 2018-03-14 |
RU2644040C1 (en) | 2018-02-07 |
EP3754143A1 (en) | 2020-12-23 |
US20160333620A1 (en) | 2016-11-17 |
WO2015135005A1 (en) | 2015-09-17 |
AT16873U1 (en) | 2020-11-15 |
AT515493A1 (en) | 2015-09-15 |
HUE051521T2 (en) | 2021-03-01 |
DE202015009804U1 (en) | 2020-03-19 |
ES2831425T3 (en) | 2021-06-08 |
CN106103873B (en) | 2018-03-20 |
JP2017509814A (en) | 2017-04-06 |
US9719283B2 (en) | 2017-08-01 |
CN106103873A (en) | 2016-11-09 |
EP3117060A1 (en) | 2017-01-18 |
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