EP3289155A1

EP3289155A1 - Ejection device for a movable furniture part

Info

Publication number: EP3289155A1
Application number: EP16718672.5A
Authority: EP
Inventors: Karsten Filges
Original assignee: Hettich ONI GmbH and Co KG
Current assignee: Hettich ONI GmbH and Co KG
Priority date: 2015-04-30
Filing date: 2016-04-26
Publication date: 2018-03-07
Also published as: US20180155972A1; KR20170142168A; DE102015106781A1; CA2979130A1; WO2016174026A1; AU2016254655A1; RU2017134712A; CN107532443A; JP2018514668A

Abstract

The invention relates to an injection device for a movable furniture part (3), in particular a door or a flap, which injection devices comprises an ejection element (6), which can be coupled to a movable furniture part (3) and which is provided for moving the movable furniture part (3) into an open position, a releasable locking mechanism, by means of which a force accumulator (24) for actuating the ejection element (6) can be locked in a closed position of the furniture part (3), a loading device for loading the force accumulator (24) after the actuation of the ejection element (6) by means of movement of the furniture part (3) in the opening direction, a retracting device for the ejection element, by means of which the ejection element (6) can be moved in the closing direction after the ejection element (6) has been decoupled from the furniture part (3), wherein the locking mechanism has a first linearly movable slide (20), the loading device has a second movable slide (30), the ejection element (6) is connected to a third slide (40), and the second slide (30) and the third slide (40) can be moved in the opening direction by means of the first slide (20).

Description

Ejecting device for a movable furniture part

The present invention relates to an ejection device for a movable furniture part, in particular a door or a flap, comprising an ejection element which can be coupled to a movable furniture part for moving the movable furniture part into an open position, an unlockable latching mechanism, by means of which a force accumulator for actuating the ejection element in a closed position the furniture part can be latched, a clamping device for tensioning the energy storage after actuation of the ejection element by moving the furniture part in the opening direction, a retraction device for the ejection element, by means of which the ejection element is movable in the closing direction after a decoupling of the ejection element of the furniture part.

DE 10 201 1 052 355 A1 discloses a device for opening a cabinet door of a piece of furniture. By depressing the cabinet door a latching mechanism is unlocked to move the cabinet door in an intermediate position. The cabinet door can then be pulled open manually from this intermediate position, wherein an ejection piston is retracted against the force of a compression spring via a clamping rod coupled to the cabinet door. After loosening the cabinet door of the tie rod then this can also be moved back into a cabinet body. However, it is not shown how the control unit should transfer the movement of the tension rod to the ejection piston. In addition, it is not shown how the individual units can be mounted in a compact manner.

It is therefore the object of the present invention to provide a discharge device for a movable furniture part, which can provide high ejection forces and has a compact design.

This object is achieved with an ejection device with the features of claim 1. Advantageous embodiments emerge from the subclaims.

The ejection device according to the invention has an unlockable latching mechanism by means of which a force accumulator for actuating an ejection element can be latched in a closed position of the furniture part, wherein the latching mechanism comprises a first linearly displaceable carriage and a clamping device. having means for tensioning the force accumulator and a second movable carriage. The ejection member is connected to a third carriage, and via the first carriage, the second carriage and the third carriage are movable in the opening direction. As a result, linear movement movements can be carried out by the carriages in order to tension the energy accumulator or to move the ejection element. The linear guidance of the carriages enables the provision of high ejection forces and a high precision with regard to the movements. In addition, the carriages can be accommodated in a compact housing in a common housing.

Preferably, the second carriage is movable in the closing direction through the intake device via the third carriage. This allows the first carriage to move the second carriage in the opening direction and the third carriage to move the second carriage in the closing direction, wherein the second carriage is preferably arranged between the first and third carriages.

In a preferred embodiment, the three carriages are guided linearly within a common housing. For such a linear guide can be formed on the housing on a side facing the interior grooves for guiding the carriage, so that a precise guidance is ensured. The housing may for example be made of metal, in particular an extruded aluminum profile. Other materials, such as Plastics are also possible.

The tensioning device preferably has a gear in order to move the third carriage in the opening direction out of the first carriage in FIG

To move closing direction. The third carriage and the first carriage thereby move in opposite directions while the second carriage remains stationary at an end position. The transmission can have a coupling in order to move in the decoupled position then the second and third slide in the closing direction .. For a

Coupling of the gear, a gear can be kept perpendicular to the axis of rotation movable, in particular, by moving the third carriage after the ejection movement in the opening direction, the gear of the transmission can be coupled.

In a further embodiment, a latching mechanism is provided on which a guideway is arranged with a loop-shaped portion and a detent recess into which engages a control pin which can be latched to the guideway. The latching mechanism can be used with the first carriage der- be connected art that this can be locked in the starting position against the force of the energy storage.

Preferably, the collection device has a damper, so that a return movement of the second and third carriage can be done with low speed and low impact noise. The damper may be formed as a rotary damper, which is driven by a rack, which is for example fixed to the housing and is in engagement with a gear for driving the rotary damper. The rotational damper can preferably move on the third carriage, since this has the longest travel in the closing direction.

The energy accumulator preferably comprises at least one linearly guided spring, in particular a compression spring. Depending on the required force and several springs for the energy storage can be used. The spring force of the force accumulator is greater than the force of a spring of a retraction device, since this only has to move the second and third carriage from an open position to the closed position. On the ejection element is preferably provided in magnet, which is coupled to a driver on a door or flap via magnetic forces. It is also possible to connect the ejection element via a mechanism with the door or the flap in order to move the ejection element via tension forces in the opening direction to tension the energy accumulator.

The ejection device according to the invention is preferably used in a piece of furniture in which at least one door is pivotally mounted via one or more hinges. But also a use for household appliances, flaps or other movable furniture parts is possible.

The invention will be described in more detail below with reference to an embodiment with reference to the accompanying drawings. Show it:

Figure 1 is a schematic view of a piece of furniture with an ejection device according to the invention;

Figure 2 is a perspective view of the ejection device of

Figure 1 with partially removed housing; Figure 3 is an exploded perspective view of the ejector of Figure 1;

Figs. 4A and 4B are two views of the ejection device of Fig. 3;

FIGS. 5A and 5B show two views of the ejection device of FIG. 3 in an intermediate position, and FIGS

Figures 6A to 6C show several views of the ejector of Figure 3 in an end position with fully extended ejection element.

A piece of furniture 1 comprises a furniture body 2 on which a door 3 is pivotably mounted via one or more hinges 4. The door 3 is ejected on the opposite side to the hinges 4 via a discharge device 5 in a slightly open open position, for example in an open position between 30 mm and 50 mm apart from the closed position. To eject the door 3, the ejection device 5 comprises a rod-shaped ejection element 6, which can be coupled to the door 3 via a magnet 7 with a driver 8. As a result, when the door 3 is opened from the intermediate position, a tensile force is transmitted to the ejection element 6 in order to tension a tensioning device within a housing 9 of the ejection device 5 against the force of an energy accumulator. Once the energy storage is tensioned and fixed by a locking mechanism in the cocked position, the coupling between the discharge element 6 and the door 3 can be solved, so that the door 3 can then be pivoted independently of the ejector 5. At the same time, the ejection element 6 moves back into the housing 9 through a retraction device, so that the door 3 can be automatically closed again by the retraction springs of the hinges 4 during a closing movement, without the ejection device 5 hindering the closing process. To open the door 3, the door 3 can then be pressed slightly in the closing direction to depress the ejection element 6 and thereby unlock a latching mechanism so that the ejection element 6 can then eject the door 3 again into the slightly open open position.

FIG. 2 shows the ejection device 5 with the housing 9. The housing 9 comprises an upper housing shell 90 and a bottom 91, which may be made of a part, for example an extruded hollow profile. nen or are composed of several parts. The housing shell 90 and the bottom 91 are closed at opposite ends by cover caps 92 and 93, wherein the discharge element 6 is performed through an opening 98 through the cap 93. Within the housing 9, a first carriage 20 is mounted linearly movable, which is biased via a force accumulator 24 in the form of two compression springs, wherein the compression springs are supported on the side facing away from the first carriage 20 side of the cap 92. Adjacent to the first carriage 20, a second carriage 30 is mounted movable parallel to the first carriage 20, wherein the second carriage 30 between see the first carriage 20 and a third carriage 40 is arranged.

The third carriage 40 is biased in the closing direction via a force accumulator 50 of a collection device, the energy accumulator 50 is designed as a compression spring and is supported on the cover 93 away from the third carriage 40 side.

In FIG. 3, the ejection device 5 is shown in an exploded view.

The housing 9 is formed as a hollow profile and has on opposite sides grooves 95, which serve to guide the carriage 20, 30 and 40. For this purpose, webs 21 are formed on the carriage 20 on opposite sides, which engage in a first groove 95, and similarly on the second carriage 30 projecting webs 31 and on the third carriage 40 webs 41 are formed, each in a second and third groove 95 engage the housing 9. The slides 20, 30 and 40 are guided in the grooves 95 linearly adjacent to each other.

For fixing the cover caps 92 and 93 screw channels 99 are provided on the housing 9, so that over the covers 92 and 93 and larger forces in the direction of movement of the carriage 20, 30 and 40 can be added. The housing 9 comprises on laterally projecting webs openings 94, via which the housing 9 can be fixed via fastening means on a side wall of a furniture body. In the mounted position except the housing 9, only the ejectable ejection element 6 is visible. In the cover caps 92 and 93 openings 101 are also provided for the implementation of fastening means.

On the housing shell 90, a groove 100 is formed, in which a foot portion 96 of a rack 97 is inserted. The rack 97 is fixed to the housing 9 and is engaged with a gear 46 which is rotatable on an axis 56 is mounted, wherein the axis 56 is slidably disposed on a slot 57 of the third carriage 40. The gear 46 is at least in a closing movement of the third carriage 40 in engagement with a gear 47 which drives a rotary damper 48. In the opening direction, the gear 47 can be decoupled from the gear 46, so that the rotational damper 48 is ineffective in the opening direction. Alternatively, the rotary damper can also be permanently coupled directly to the toothed rack 97 via a toothed wheel, with the rotary damper only damping in the closing direction. Another alternative for the damped feeder device may be a system with a line damper which dampens the movement of the carriage 40 in the closing direction.

The third carriage 40 has a tubular receptacle in the pins

51 intervene. To the pins 51, the spring 50 is arranged, which biases the carriage 40 in the closed position. The pins 51 and the tubular receptacle serve to avoid buckling of the compression spring 50. Alternatively, the power storage for the collection device can also be designed as a tension spring, scroll spring, etc., wherein, for example, the tension spring could be connected to the other side of the housing. On the opposite side of the housing 9, two pins 1 9 are fixed to the cap 92, about each of which a spring is arranged as a force storage 24 to bias the first carriage 20 in the opening direction. On the first carriage 20 of the energy storage is guided in sleeves 22, similar to the third carriage 40. Again, the spring 24 is designed as a compression spring, wherein the energy storage 24 for the ejector as a tension spring, scroll spring, etc. can be performed, for example, the Tension spring on the other side of the housing could be connected. On the first carriage 20, a pivotable lever 1 6 is further provided, which has a control 1 5 with a pin 1 7. The pin 1 7 of the control element 15 engages in a guide track 1 1 on a plate 1 0, which is fixed to the bottom 91 of the housing 9. The groove-shaped guide track 1 1 has a loop-shaped portion 1 2 with a detent recess 1 3, on which the control element 15 with the pin 1 7 against the force of the force accumulator 24 can be latched. Such a guideway 11 is also referred to as a "heart curve". When the ejection element 6 is pressed in by the door 3, the third carriage 40 moves against the second carriage 30 and the second carriage 30 moves against the first carriage 20, so that the first carriage 20 is slightly moved in the closing direction, wherein the latching mechanism on the guideway 1 1 is unlocked. As a result, the energy storage 24 can now be at the first Slide 20 act so that it is moved in the ejection direction. On the first carriage 20, a web-shaped carrier 23 is provided, which rests against an end edge of the second carriage 30 and moves it in the opening direction. Furthermore, a web-shaped driver 32 is also provided on the second carriage 30, which rests against an end edge of the third carriage 40 and moves it in the opening direction. The third carriage 40 is connected to the ejection element 6, which is thus moved by the force accumulator 24 in the opening direction. In Figures 4A and 4B, the ejection device is shown in two perspective views. On the first carriage 20, an opening 1 8 is provided for supporting a pin 14, on which the lever 1 6 is rotatably mounted. The lever 1 6 holds the control element 15 with the pin 1 7, which engages in the guideway 1 1. Der Hebel 1 6 ist mit dem Stift 1 7 verbunden. The first carriage 20 can thus be fixed to the housing 9 via a latching mechanism. Alternatively, the lever 1 6 may be arranged with the control on the housing and the guide track 1 1 on the first carriage. Furthermore, the latching mechanism described here can also be exchanged for another latching mechanism having the same function as known in the art.

The second carriage 30 can be moved over the first carriage 20 in the opening direction until stop elements 55 come to rest on the cap 93. Then, the second carriage 30 has arrived in an end position and thus also holds the third carriage 40 and the ejection element 6 in a slightly open open position.

The open position of the ejection device is also shown in FIGS. 5A and 5B. From the open position, the door 3 can be pulled in the opening direction, whereby the ejection element 6 is moved by the coupling with the door 3 in the opening direction. Thereby, the third carriage 40 is moved against the force of the spring 50 in the opening direction. On the third carriage 40, a rack 58 is further formed, which is in engagement with a gear 35 which is rotatably mounted on the second carriage 30, wherein the gear 35 in the direction of movement of the second carriage 30 movable on a

Long hole is held. As a result, the gear 35 can be engaged and disengaged with an adjacent gear 33. If pulled on the ejection element 6, the rack 58 moves the gear 35 in the opening direction and thus couples this in the gear 33 a. The gear 33 is connected via an axis 34 with a gear 36 on the underside of the second carriage 30th rotatably connected. The gear 36 is in turn engaged with a rack 25 formed on the first carriage 20. Thus, by turning the gear 36, the first carriage 20 is moved against the force of the force accumulator 24 in the closing direction when pulling on the ejection element 6 in the opening direction. The power transmission through the gears 33, 35 and 36 can be chosen so that the opening movement of the door 3 is smooth and yet a tensioning of the force accumulator 24 is made possible.

At the ejection element 6 is now pulled until the control element 1 5 with the pin 1 7 on the guide track 1 1 adjacent to a detent recess 1 3 is arranged. The third carriage 40 now abuts with a pair of glasses 42 on the cap 93, so that the ejection element 6, which is fixed by a pin 44 on a threaded sleeve 43 of the spectacles 42, can not be moved further in the opening direction, as shown in the figures 6A, 6B and 6C. As a result, the detachable coupling between the door 3 and the ejection element 6, in particular by magnetic forces solved. It is of course also possible to provide a mechanism for releasably connecting the ejection element 6 with the door 3. This can be provided for example by a positive connection or by an unlockable mechanism.

After releasing the door 3 from the ejection element 6, the ejection element 6 is now moved again in the closing direction, since the spring 50 of the feed device moves the third carriage 40 in the closing direction. As a result of the backward movement, the gearwheel 35 is first decoupled from the gearwheel 33, so that no forces are transmitted to the first carriage 20 during the backward movement. In addition, the gear 46 is rotated by the backward movement along the rack 97 and thus drives via the gear 47 to the rotary damper 48, which ensures that the return movement of the ejection element 6 takes place only with limited speed.

During the return movement, the third carriage 40 now moves into the second carriage 20 until an end face of the third carriage 40 comes to rest on the web-shaped driver 32. In this position, the second carriage 30 is also moved in the closing direction until the second carriage 30 abuts with its front side on the driver 23 of the first carriage 20. In the

Closed position, the ejection element 6 is largely retracted into the housing 9, so that the door 3 can be moved automatically in the closed position, even if damped hinges 4 are used with self-closing. In the closed position then the door 3 is located on the ejection element 6 and can push the ejection element 6 slightly by manually moving in the closing direction, so that the control element 15 is moved against the force of the force accumulator 24 and thus takes place unlocking, so that a renewed ejection takes place.

In the illustrated embodiment, the coupling via racks and gears, where obviously the position of the racks and gears can be exchanged, for example, gears instead of the rack can be provided on the third carriage to provide a corresponding gear. Likewise, racks may be provided on the second carriage 30 instead of the illustrated gears, and gears may be provided on the first carriage instead of the rack. In addition, other means for power transmission between the three carriages 20, 30 and 40 can be used.

In the illustrated embodiment, the magnet 7 is fixedly connected to the ejection element 6. For linearly movable furniture parts 3 such as e.g. in a drawer such a connection is sufficient. In a movable furniture part 3 which is designed as a door or flap, it may be advantageous to store the magnet movable, so that the angular position of the door to the linear extension movement of the ejection element 6 can be compensated. In another embodiment, the driver may be designed to be movable on the door to compensate for the angular position between the door and magnet. If a positive connection or an unlockable mechanism between the push-6 and the door 3 is provided, they may also be movably mounted to compensate for the angular position to each other can.

In the illustrated embodiment, no device is provided between the magnet 7 and the driver on the door, which reduces clicking noise when the door is closed and the driver reaches the magnet 7. This clicking sound may be advantageous as an acoustic signal or disturbing when a nearly silent reaching the closed position is desired. In the second case, an elastic material may be provided between the magnet 7 and the driver, which is ideally also magnetic. Alternatively, a damper with a short stroke can be used, which can be designed as a linear damper, which can be arranged either on or in the driver, on the ejection element 6 or on the housing 9. The damper is designed so that it slows down when tightening the door 3, the tightening of the driver to the magnet 7, so that almost no clicking sound. If the damper is arranged on the driver or on the ejection element 6, the damper is also designed so that it does not actuate the locking mechanism of the ejection device when closing the door 3.

In the illustrated embodiment, the housing 9 is fixed by means of fastening means on the furniture body 2. But it can also be provided that a mounting device is fixed to the furniture body 2, to which the housing 9 of the ejection device is pushed and fixed. Advantageously, the mounting device or the housing 9 has a depth adjustment, so that the position of the housing 9 can be adjusted. Such depth adjustments can be designed as a kind of screw adjustment or Exzenterverstellung.

The structure of the housing 9 in the illustrated embodiment is to be understood only as an example. The housing 9 may also have a different structure such as a bivalve structure. The housing should fulfill the function of protecting the internal mechanism.

LIST OF REFERENCE NUMBERS

1 furniture

2 furniture carcass

3 door

4 hinge

5 ejection device

6 ejection element

7 magnet

8 drivers

9 housing

10 plate

1 1 guideway

12 section

13 resting recess

14 cones

15 control

1 6 lever

17 pen

18 opening

19 pen

20 first sled

21 footbridge

22 sleeve

23 drivers

25 rack

24 energy storage

30 second slide

31 footbridge

32 drivers

33 gear

34 axis

35 gear

36 gear

40 third slide

41 footbridge

42 glasses

43 threaded sleeve

44 cones 46 gear

47 gear

48 rotary damper

50 spring

51 pen

55 stop element

56 axis

57 slot

58 rack

90 housing shell

91 floor

92 cap

93 cap

94 opening

95 groove

96 foot section

97 rack

98 opening

99 screw channel

100 groove

101 opening

Claims

claims

Ejection device for a movable furniture part (3), in particular a door or a flap, comprising:

a) a with a movable furniture part (3) can be coupled ejection element (6) for moving the movable furniture part (3) in an open position; b) an unlockable latching mechanism, by means of which a force accumulator (24) for actuating the ejection element (6) in a closed position of the furniture part (3) can be latched;

c) a tensioning device for tensioning the force accumulator (24) after the actuation of the ejection element (6) by moving the furniture part (3) in the opening direction;

d) a drawing-in device for the ejection element, by means of which, after a decoupling of the ejection element (6) from the furniture part (3), the ejection element (6) is movable in the closing direction,

characterized in that the latching mechanism comprises a first linearly movable carriage (20) and the tensioning device has a second movable carriage (30) and the ejection element (6) is connected to a third carriage (40) and via the first carriage (20) of the second Carriage (30) and the third carriage (40) are movable in the opening direction.

Ejecting device according to claim 1, characterized in that on the third carriage (40) of the second carriage (30) by the retraction device (50) is movable in the closing direction.

Ejecting device according to claim 1 or 2, characterized in that the three carriages (20, 30, 40) are guided linearly within a common housing (9).

Ejecting device according to claim 3, characterized in that the housing (9) on an interior grooves (95) for guiding the carriage (20, 30, 40).

Ejecting device according to one of the preceding claims, characterized in that the tensioning device has a gear (33, 35, 36) in order to move the first carriage (20) in the closing direction when the third carriage (40) is pulled out in the opening direction.

6. Ejecting device according to claim 5, characterized in that the transmission (33, 35, 36) has a coupling in order to be able to move the third and second slide (40, 30) in the closing direction in the decoupled position.

7. ejection device according to claim 5 or 6, characterized in that the second carriage (30) in the open position against a stop in the housing (9) and by moving the third carriage (40) in the opening direction, a gear of the transmission (33, 35 ) can be coupled.

8. Ejecting device according to one of the preceding claims, characterized in that the latching mechanism has a guide track (1 1) with a loop-shaped portion (12) having a detent recess into which a control pin (17) engages, wherein the first carriage (20) via the latching mechanism on the housing (9) can be latched.

9. Ejecting device according to one of the preceding claims, characterized in that the retraction device comprises a damper (48).

10. Ejecting device according to claim 9, characterized in that in the housing (9) at least one rack (97) is provided, which is in engagement with at least one gear (46, 47) which drives a rotary damper (48).

1 1. Ejecting device according to one of the preceding claims, characterized in that on the third carriage (40) a rack (48) is provided which drives a gear (35) to move the ejection element (6) from the open position in the opening direction of the energy storage ( 24).

12. Ejecting device according to one of the preceding claims, characterized in that the force accumulator (24) comprises at least one linearly guided compression spring.

13. Ejecting device according to one of the preceding claims, characterized in that the collection device for the ejection element (6) comprises a Kraftespichre (50) whose force is less than the force of the force accumulator (24) of the ejection device.

14. Ejecting device according to one of the preceding claims, characterized in that the ejection element (6) has a magnet (7) which is coupled to a driver (8) on a door (3) or flap via magnetic forces.

15. Furniture with at least one hinge-mounted door or flap, which is movable via an ejection device according to one of the preceding claims.