Ejection device for a movable furniture part, and piece of furniture

Abstract

An ejection device (1) for a movable furniture part (110, 210) comprises a housing (2), a lever (3) rotatably mounted on the housing (2) about a pivot axis (), at least one energy storage device (4) with which the lever (3) can be biased relative to the housing (2) in a direction of rotation, and a detent mechanism for releasably locking the lever (3) with the energy storage device (4) biased, wherein the lever (3) has an actuating section (31) which can be brought into engagement with the movable furniture part (110, 210) for ejecting the movable furniture part (110, 210) when the lever (3) is rotated by the force of the energy storage device (4), wherein the lever (3) is movable in a release direction (B) opposite to an ejection direction (A) to trigger the ejection movement when the energy storage device (4) is biased, and wherein a blocking element is provided for blocking the release movement of the lever (3) in the release direction (B) relative to the housing (2).Furthermore, a piece of furniture with such an ejection device is described.

Description

[0001] The present invention relates to an ejection device for a movable furniture part according to the preamble of claim 1.

[0002] The invention further relates to a piece of furniture with a movable furniture part.

[0003] A generic ejection device is known from EP 4 388 937 A1. Such ejection devices serve to eject a movable furniture part from a furniture body.

[0004] The ejection device described in the aforementioned publication features a pivoting ejection lever that can be locked in a pre-tensioned position. To eject the movable furniture part, it is pressed against a contact element of the ejection device in the opposite direction of ejection, thus releasing the ejection lever from its pre-tensioned position. This allows the movable furniture part to then move or eject in the ejection direction relative to the furniture body.

[0005] Such an ejection device has proven effective in practice. The problem is that, for example, during transport of the furniture, the ejection device can be triggered unintentionally.

[0006] The object of the present invention is to provide an ejection device with which such unintentional triggering can be reliably prevented.

[0007] The problem is solved by an ejection device for a movable furniture part with the features of claim 1.

[0008] The ejection device according to the invention for a movable furniture part has a housing, a lever rotatably mounted on the housing about an axis of rotation, a power storage device with which the lever can be pre-tensioned relative to the housing in a direction of rotation, and a locking mechanism to releasably lock the lever with the tensioned power storage device.

[0009] The lever has an actuating section with a contact element that can be engaged with an activator of the movable furniture part to eject the movable furniture part when the lever is turned by the force of the energy storage device.

[0010] The lever can be moved in a triggering direction opposite to an ejection direction when the energy storage device is under tension, in order to trigger the ejection movement.

[0011] According to the invention, the ejection device has a blocking element for blocking the release movement of the lever in the release direction relative to the housing.

[0012] By arranging such a blocking element, it is possible in a simple way to effectively prevent the triggering of the ejection movement.

[0013] Advantageous embodiments of the invention are the subject of the dependent claims.

[0014] According to an advantageous embodiment, the blocking element is designed as a switching element movably mounted on the housing, which is adjustable between a blocking position that blocks the release movement of the lever and a release position that does not block the release movement of the lever.

[0015] Designing the blocking element as a switching element mounted on the housing has the advantage that the switching element, as part of the ejection device, cannot be misplaced or lost. Furthermore, such a switching element is easy to operate.

[0016] According to an advantageous embodiment, the switching element is provided with a locking contour which, in the blocking position of the switching element, is positioned in the movement path of a counter contour of the lever from the pre-tensioned position of the lever in the release direction.

[0017] This allows for a mechanical blocking of the lever's release movement. Furthermore, even after the ejection process has been completed, the lever can be moved back to the pre-tensioned position while the switching element is in the blocked position.

[0018] According to an advantageous embodiment, the switching element has a stop contour to limit the movement of the switching element between the blocking position and the release position.

[0019] This enables reliable, targeted movement of the switching element, ensuring that the user has moved the switching element either into the blocking position or the release position.

[0020] According to an advantageous embodiment, the stop contour is designed as a window recess into which a pin arranged on the housing protrudes.

[0021] This allows for a structurally simple stop contour.

[0022] To further ensure that the switching element is held in one of the two positions, the switching element has a spring-loaded detent contour for locking the switching element in the blocking position and the release position on a cam arranged on the housing.

[0023] The switching element is preferably designed as a toggle switch pivotally mounted on the housing. Such a toggle switch is easy to operate.

[0024] To make the toggle switch easy to use for the user, markings indicating the blocking position and the release position are provided on one operating side of the toggle switch.

[0025] This allows the user to always see directly on the toggle switch whether the switching element is in the blocking position or the enabling position.

[0026] According to an alternative design variant, the blocking element is designed as a blocking shoe that can be inserted into a gap between the housing and the lever when the energy storage device is under tension.

[0027] Such a blocking shoe represents an extremely simple way of preventing the triggering movement of the lever for the ejection movement.

[0028] For ease of use, the locking shoe has a grip area in addition to a locking area, which allows the user to easily insert or remove the locking shoe from the gap between the housing and the lever.

[0029] According to an advantageous further development, the blocking shoe has a support area between the blocking area and the grip area, which is supported with a first outer contour on a section of the housing and with a further section on a side surface of the lever.

[0030] Following a further advantageous development, the locking shoe, for example, has a bore in the support area to facilitate removal in difficult-to-reach places. This allows the locking shoe to be pushed out of position with a suitable tool, such as a screwdriver.

[0031] The furniture according to the invention, comprising a furniture body and a movable furniture part, is characterized by an ejection device as described above.

[0032] Preferred embodiments are explained in more detail below with reference to the accompanying drawings. They show: Figure 1 is a perspective view of an ejection device according to the invention, Figure 2 is a top view of the in Figure 1 Ejection device shown, Figure 3 a side view of the in Figure 1Ejection device shown with a representation of a blocking element designed as a toggle switch, Figure 4 a schematic perspective exploded view of the in Figure 1 shown ejection device, Figure 5 a sectional view through the ejection device showing the locking element designed as a toggle switch in a locking position, Figure 6 one of the Figure 5 corresponding illustration with the toggle switch positioned in the release position and the lever under tension, Figure 7, one of the Figure 6 corresponding representation of the ejection device with the toggle switch positioned in the release position and the lever in the trigger position, Figure 8, one of the Figure 5corresponding representation of the ejection device with toggle switch in the blocking position and lever in the position after the ejection process, Figures 9 and 10; sectional views of the toggle switch in the release position and the blocking position, Figure 11; a perspective view of an alternative embodiment of an ejection device according to the invention with a blocking element designed as a blocking shoe before the blocking element is inserted, Figure 12; one of the Figure 11 corresponding illustration with the blocking shoe inserted into the ejection device, Figure 13 a sectional view of the in Figure 12Figure 14 shows a perspective view of a piece of furniture with a movable furniture part designed as a drawer with an ejection device according to the invention, and Figure 15 shows a perspective view of an alternative piece of furniture with a furniture body and a furniture part movable from it via a translational-rotational fitting with an ejection device according to the invention provided on the translational-rotational fitting.

[0033] In the following figure descriptions, terms such as top, bottom, left, right, front, back, etc., refer exclusively to the exemplary representation and position of the ejection device, locking element, lever, housing, and the like as chosen in the respective figures. These terms are not to be understood as restrictive; that is, these references may change due to different working positions, mirror-symmetrical design, or similar factors.

[0034] In the Figures 1 to 8Reference numeral 1 designates a variant embodiment of an ejection device according to the invention. The ejection device 1 has a housing 2 in which a lever 3 is rotatably mounted.

[0035] The lever 3 acts indirectly or directly on a movable part of the furniture, preferably on an activator attached to the movable part of the furniture (not shown).

[0036] The lever 3 is pre-tensioned by a power storage device 4 in a rotational direction corresponding to the opening direction of the movable furniture part. A locking mechanism of the ejection device 1 serves to releasably lock the lever 3 with the power storage device 4 tensioned.

[0037] An actuating section 31 of the lever 3 can be brought into engagement with the movable furniture part 110, 210 to eject the movable furniture part 110, 210 when the lever 3 is turned by the force of the energy storage device 4.

[0038] To trigger the ejection movement, the lever 3 is moved in a release direction B, as shown in the tensioned energy storage device 4. Figure 5 , moved in the opposite direction of ejection A.

[0039] To prevent unintentional triggering of the ejection movement, the ejection device 1 has a blocking element to block the triggering movement of the lever 3 in the triggering direction B relative to the housing 2.

[0040] During the Figures 1 to 8 In the first embodiment of the blocking element shown, this is designed as a switching element 5, here in the form of a toggle switch, which is movably mounted on the housing 2 and can be switched between a blocking position that blocks the release movement of the lever 3, as shown in Figure 5 and a release position that does not block the release movement of lever 3, as exemplified in Figure 6 , is adjustable.

[0041] As in Figure 4As shown, the housing 2 is formed with a U-shaped housing part 21. An insert element 22 is inserted into this housing part 21, on which a cam guide 10 and a control cam 11 are formed. The insert element 22 is arranged with a web 12 aligned with a receptacle 23 on the housing part 21, so that a screw can be screwed through the receptacle 23 and the web 12 into a tab of the housing part 21, thus forming a firmly connected unit. To fix the insert element 22 in the housing part 21, further screws 18 are provided for screwing the insert element 22 to the housing part 21.

[0042] The lever 3, designed as a two-armed lever, is rotatably mounted via a pivot axis 26 formed on the insert element 22, which is received in a bearing receptacle 32 of the lever 3. A further pivot axis section 71 is formed on a control cam 7 on the side of the lever 3 facing away from the insert element 22 and projects into the bearing receptacle 32. A section of a tilting axis 72 is also formed on this control cam 7 and projects into a corresponding axle receptacle in the switching element 5.

[0043] Furthermore, a tilting axis 13 is formed on the housing 2, here the insert element 22, in a receptacle 23 for receiving the switching element 5, in order to mount the switching element 5 in a tiltable manner.

[0044] To limit the tilting movement of the switching element 5, the switching element 5 has a stop contour 52, which serves to limit the movement of the switching element 5 between the blocking position and the release position.

[0045] Furthermore, holders 33 are molded onto the lever 3, which serve to hold one of the energy storage devices 4, with which the lever 3 can be preloaded relative to the housing 2.

[0046] The control of the movement sequence of the lever 3 relative to the housing 2 of the ejection device 1 is explained in detail in EP 4 388 937 A1, to whose description reference is hereby expressly made.

[0047] As in the one representing a blocking position of the switching element 5 Figure 5 As shown, the switching element 5 has a locking contour 56 which, in the blocking position of the switching element 5, is positioned in the movement path of a counter contour 34 of the lever 3 from the pre-tensioned position of the lever 3 in the release direction B.

[0048] As in this Figure 5 As can be clearly seen, a rotational movement of the lever 3 in the direction of B is blocked by the locking contour 56 of the switching element 5.

[0049] To release lever 3 for an ejection process, the switching element 5, designed here as a toggle switch, is engaged in the Figures 5 to 8 The illustration shown is tilted counterclockwise in order to achieve the release position which does not block the release movement of lever 3.

[0050] In this release position, as in Figure 6 It is clearly visible that the locking contour 56 is outside the counter contour 34 of the lever 3, so that, as in Figure 7 As shown, lever 3 can now perform the triggering movement.

[0051] During this movement, the counter contour 34 of the lever 3 moves into a clearance 57 of the switching element 5 and thus triggers the ejection movement of the lever 3, in which the lever 3 with its actuating section 31, as shown in Figure 8 shown, counter-clockwise in Figure 8 was moved downwards.

[0052] Pre-tensioning of lever 3 into the Figure 5The position of lever 3 shown is also the same when the switching element 5 is in the blocking position, as shown in Figure 8 As shown, it is easily possible.

[0053] To limit the tilting movement of the switching element 5, the stop contour 52 in the embodiment shown here is designed as a window recess into which a pin 14 arranged on the housing 2 projects. The pin 14 is formed in the area of ​​the receptacle 23 for the switching element 5 from the insert element 22.

[0054] To ensure that the switching element 5 is always either in the blocking position or in the release position, the switching element 5 has a spring-loaded detent contour 53 for detenting the switching element 5 in the blocking position and the release position on a cam 24 arranged on the housing 2, here the insert element 22 of the housing 2, in particular an integrally formed cam 24.

[0055] To develop the elasticity of the locking contour 53, behind the locking contour 53, as in the Figures 9 and 10 It is clearly visible that a recess 54 is formed in the switching element 5. Figure 9 This shows the release position of switching element 5, while Figure 10 shows the blocking position of switching element 5.

[0056] To provide the user with an easy way to distinguish the release position of the switching element 5 from the blocking position, markings 55 indicating the blocking position and the release position are provided on one actuation side 51 of the toggle switch.

[0057] Furthermore, knurling 58 is preferably provided on the actuating side 51 of the switching element 5.

[0058] In the Figures 11 to 13 An alternative design variant of a blocking element is shown.

[0059] The blocking element is designed here in the form of a blocking shoe 6 which can be inserted into a gap 19 between the housing 2 and the lever 3 when the power storage unit 4 is under tension.

[0060] The blocking shoe 6, as shown in Figure 11 and Figure 13 It is clearly visible that there is a blocking area 61 which is pushed forward in the gap and a gripping area 62.

[0061] In the embodiment shown here, a support area 63 is formed between the grip area 62 and the locking area 61, which is supported with a first outer contour on a section of the housing 2 and with a further section on a side surface of the lever 3.

[0062] Furthermore, the locking shoe 6 has a bore 64 in the support area 63 to facilitate removal in areas of poor accessibility. The bore 64 serves as a tool receptacle to allow the locking shoe 6 to be pushed out of position using a suitable tool, such as a screwdriver.

[0063] In Figure 14 A piece of furniture 100 with ejection device 1 is shown.

[0064] The furniture 100 comprises a furniture carcass 120 and a movable furniture part 110 in the form of a drawer, which is movably held on opposite sides by a drawer slide 130. The drawer slide 130 is mounted on a side wall of the furniture carcass 120, to which the housing 2 of the ejection device 1 can also be fixed, so that the movable lever 3 acts on the movable furniture part. An activator 190 can be arranged on the movable furniture part 110 or on the movable rail of the drawer slide 130 to trigger the ejection device 1. Alternatively, the ejection device can also be arranged on the movable furniture part 110 and the activator 190 on the furniture carcass 120.

[0065] Figure 15shows another piece of furniture 200, which has a furniture body 220 in the form of a cabinet with a base and a top, between which a movable furniture part 210 is held in the form of a furniture part 210 that can be moved translationally and rotationally relative to the furniture body 220.

[0066] The movable furniture part 210 is mounted translationally and rotationally via a translational-rotational fitting 230. Two ejection devices 1 are provided to eject the movable furniture part 210 from each of its two end positions, which correspond to a closed position. The movable furniture part 210 can be locked in two end positions. At least one activator can be arranged on the movable furniture part 210 or on the movable component of the translational-rotational fitting 230 to trigger the ejection device 1. Alternatively, the ejection device can be arranged on the movable furniture part 210 and the at least one activator on the furniture body 220.

[0067] Such an ejection device 1 can also be used for other furniture or household appliances to lock a movable furniture part in a starting position and then eject it by means of a release mechanism, whereby the ejection can be designed as a linear movement as well as a pivoting or rotating movement or as a combined translational-rotational movement. Reference symbol list

[0068] 1 Ejection device 2 Housing 21 Housing part 22 Insert element 23 Mount 24 Cam 26 Axis of rotation 3 Lever 31 Actuating section 32 Bearing receptacle 33 Holder 34 Counter contour 4 Energy storage 5 Switching element 51 Actuating side 52 Stop contour 53 Detent contour 54 Recess 55 Marking 56 Locking contour 57 Clearance 58 Ribbed 6 Blocking shoe 61 Blocking area 62 Grip area 63 Support area 64 Bore 7 Control cam 71 Rotary axle section 72 Tilting axle 10 Curve guide 11 Control curve 12 Bridge 13 Tilting axis 14 Pin 18 Screw 19 Gap 100 Furniture 110 Furniture part 120 Furniture carcass 130 Drawer guide 190 Activator 200 Furniture 210 Furniture part 220 Furniture carcass 230 Translation-rotation fitting A Ejection direction B Trigger direction

Claims

1. Ejection device (1) for a movable furniture part (110, 210), comprising: - a housing (2), - a lever (3) rotatably mounted on the housing (2) about a pivot axis (26), - at least one energy storage device (4) with which the lever (3) can be biased relative to the housing (2) in a direction of rotation, - a detent mechanism for releasably locking the lever (3) with the energy storage device (4) biased, - wherein the lever (3) has an actuating section (31) which can be brought into engagement with the movable furniture part (110, 210) for ejecting the movable furniture part (110, 210) when the lever (3) is rotated by the force of the energy storage device (4), - wherein the lever (3) is movable in a release direction (B) opposite to an ejection direction (A) when the energy storage device (4) is biased to trigger the ejection movement. characterized by - a blocking element for blocking the release movement of the lever (3) in the release direction (B) relative to the housing (2).

2. Ejection device according to claim 1, characterized by the fact that the blocking element is designed as a switching element (5) movably mounted on the housing (2), which is adjustable between a blocking position that blocks the release movement of the lever (3) and a release position that does not block the release movement of the lever (3).

3. Ejection device according to claim 2, characterized by the fact that the switching element (5) has a locking contour (56) which, in the blocking position of the switching element (5), is positioned in the movement path of a counter contour (34) of the lever (3) from the pre-tensioned position of the lever (3) in the release direction (B).

4. Ejection device according to claim 2 or 3, characterized by the fact that the switching element (5) has a stop contour (52) to limit the movement of the switching element (5) between the blocking position and the release position.

5. Ejection device according to claim 4, characterized by the fact thatthe stop contour (52) is designed as a window recess into which a pin (14) arranged on the housing (2) protrudes.

6. Ejection device according to claim 3 or 4, characterized by the fact that the switching element (5) has a spring-loaded detent contour (53) for detenting the switching element (5) in the blocking position and the release position on a cam (24) arranged on the housing (2).

7. Ejection device according to one of claims 2 to 6, characterized by the fact that the switching element (5) is designed as a toggle switch pivotably mounted on the housing (2).

8. Ejection device according to claim 4, characterized by the fact that Markings (55) indicating the blocking position and the release position are provided on an actuating side (51) of the toggle switch.

9. Ejection device according to claim 1, characterized by the fact thatthe blocking element is designed as a blocking shoe (6) that can be inserted into a gap (19) between the housing (2) and the lever (3) when the energy storage device (5) is under tension.

10. Ejection device according to claim 9, characterized by the fact that The blocking shoe (6) has a blocking area (61) and a gripping area (62).

11. Ejection device according to claim 10, characterized by the fact that the blocking shoe (6) has a support area (63) between the blocking area (61) and the grip area (62).

12. Ejection device according to claim 9 or 10, characterized by the fact that The blocking shoe (6) has a bore (64) as a tool holder.

13. Furniture (100, 200) comprising a furniture body (120, 220) and a furniture part (110, 210) movable relative to the furniture body (120, 220) and movable via an ejection device (1) according to one of the preceding claims.

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