ES2801475T3 - Ejection device for a movable and furniture part - Google Patents

Abstract

Ejection device (6) for a movable piece of furniture (3), with an actuation element (35) prestressed through at least one spring (12), by means of which the movable piece of furniture (3) can move from a closed position to an open position, the at least one spring (12) being able to move in the event of a closing or opening movement of the furniture part (3) along a stretch of travel, to a tensioned position, and the furniture part (3) can be locked in the closed position with at least one spring (12) tensioned, a return lock being provided, which limits the opening or closing movement of the furniture part (3) mobile, when the tensioning of the spring (12) in case of a closing or opening movement of the cabinet part (3) has not yet been completed, the return blocking presenting a blocking lever (17) that can move along a guide rail (33), which in case of a closing or opening movement of the part The movable piece of furniture can be hooked when the tensioning process is interrupted with a toothed bar (16) or a locking strip, the locking lever (17) being able to move via a guide element (19) along the guide rail (33) configured in the housing (10), characterized in that the guide rail (33) has a loop-shaped section and a first section (34) of the guide rail (33) for the tensioning process is arranged further Next to the toothed bar (16) there is a second section (31) of the guide rail (33) for the opening movement.

Description

DESCRIPTION

Ejection device for a movable and furniture part

The present invention relates to an ejection device for a mobile furniture part according to the preamble of claim 1.

Document DE 20 2006 012 976 U1 discloses an ejection device that can be locked, which comprises a fixing device, which prevents an ejection of the movable furniture part before finishing the charging process of the power accumulator. A locking device of this type or return lock can be used, for example, in push-to-open fittings, to prevent an ejection of the drawer during a closing movement, when a force accumulator of an ejection device has not yet it is fully charged. For a fixation, a clamping element is wedged with a contact section of a clamping device, to prevent an opening movement. The friction and clamping forces can however be insufficient, precisely in the case of heavy furniture parts, such as loaded drawers.

Document DE 202010009796 U1 discloses an ejection device for a mobile furniture part, which strains a force accumulator during a closing movement. In order to prevent ejection during such a tensioning procedure, a curved spring is provided, which in contact with a locking pawl pushes against a toothing. Because of this, an opening movement has to be blocked. However, the thin-walled spring can easily be damaged by higher loads in the opening direction.

It is therefore the task of the present invention to create an ejection device for a movable furniture part, which makes available a stably configured return lock with simple means.

This task is solved with an ejection device with the characteristics of claim 1.

The return lock comprises according to the invention a locking lever that can be moved along a guide rail, which can engage during a closing movement of the movable furniture part when the tensioning process is interrupted, with a toothed bar. This locking lever is forcibly guided through the guide rail and can absorb comparatively high clamping forces when the closing or opening process is interrupted.

The ejection device preferably has a housing, through which a carriage prestressed by the at least one spring is guided with the actuating element. As a result of a relative movement of the carriage relative to the housing, an ejection can then take place via the actuating element. In this case, the locking lever can have a control element, which is hooked with a curve guide to the carriage, so that in the event of a relative movement of the carriage relative to the housing, the locking lever also moves. .

The locking lever can be moved according to the invention through a guide element along a guide rail in the housing, so that both a pivoting position, as well as the position of the locking lever in the guide rail, it is default. As a result, it can be achieved that the locking lever does not come into position during a closing movement or an opening movement with the toothed bar, as long as the tensioning process is not interrupted. As a result, noise-free tensioning of the at least one spring is made possible, and the locking lever engages with the toothed bar only when the tensioning process is interrupted.

The ejection device can preferably be combined with a self-retracting device, as known in the state of the art. The self-retracting devices can be configured separately from the ejection device or form a unit with the ejection device. When the drawer is closed or opened, the spring of the ejection device is tensioned and after or during the tensioning and locking of the spring, the self-retracting device can move the drawer into the closed position and in this case optionally also brake it.

The ejection device can preferably have different loading principles for the at least one spring. This means that the at least one spring of the ejection device can be loaded after opening the movable furniture part, for example when closing. The ejection device can alternatively eject the movable furniture part to a first open position, and then the user can continue to manually move the movable furniture part in the opening direction towards a second open position, for example in case of a drawer. Then this opening movement from the first to the second closing position can be used to tension the at least one spring, so that the return lock can be effective in this case during an opening movement of the movable furniture part.

According to the invention, the guide rail has a loop-shaped section. In this connection, a first section of the guide rail is arranged closer to the toothed bar for the tensioning process than a second section of the guide rail for the opening movement. The lock lever may be at this With respect to pretensioned via a tensioning spring towards the latching position, so that in case of interruption of the tensioning process, the tensioning spring takes care of a quick engagement of the locking lever on the toothed bar.

The locking lever preferably has a latching element. The hooking element is advantageously guided during the tensioning process separately from the toothed bar, so that holding or dragging noises can be avoided. The coupling element can be guided essentially linearly and in parallel with respect to the toothed bar or the locking bar.

Provided in the guide rail in another configuration is a holding or holding section for holding the movable furniture part in the closed position. The locking lever, which can be moved along the guide rail, can thus on the one hand assume the function of the return lock and additionally also the function of a stopper for the movable furniture part. For unlocking, the movable furniture part is then pushed in or pushed in and the locking lever of the holding or holding section is released.

For a compact structure, the locking lever can be rotatably mounted around the guide element, the guide element being arranged between a hooking element for hooking on the toothed bar and a control element.

The invention is used in particular in a piece of furniture, in which through an ejection device a drawer or a sliding door is moved from a closed position in the open direction. However, it is also possible to use the ejection device on doors, lids or other movable furniture parts. A self-retracting device can preferably be provided on the furniture, which in addition to the ejection device acts on the movable piece of furniture before reaching the closed position, to hold the movable piece of furniture in the closed position and, if necessary, brake a movement. closing movement.

The invention is explained in greater detail below by means of an exemplary embodiment in conjunction with the accompanying drawings. They show:

Figure 1, an exploded perspective representation of a mobile furniture part with an ejection device;

Figure 2, a perspective representation of the movable furniture part of Figure 1 in the assembled position;

Figure 3, a detailed view of the ejection device of Figure 1, and

Figure 4, a detailed view of the ejection device of Figure 3 in an opening movement. A piece of furniture 1 comprises a piece of furniture 2, into which a movable piece of furniture 3 in the form of a drawer can be inserted, a front panel 4 being arranged on an open side of the piece of furniture 2. The drawer is displaceably housed through two extraction guides 5, which are arranged on opposite side walls of the furniture body 2. Each extraction guide 5 is arranged on a lateral frame 8 of the drawer and fixed through a fixing bracket 9 and holds the drawer through a movable slide rail. In addition, angular drivers 7 are fixed on the furniture body 2, which interact with an ejection device 6 for the movable furniture part 3. Through the ejection device 6, when the front panel 4 is pressed in the closing direction 5 towards the furniture body 2, an unlocking can take place, so as to then eject the drawer in the opening direction through the force of at least a spring. When the drawer moves in the closing direction, the at least one spring of the ejector device 6 is tensioned again.

In figure 2 the ejection devices 6 are mounted on a lower side of the base of the drawer and interact with the angular drivers 7. It is also possible to allow the ejection devices 6 to interact with other mobile furniture parts, such as sliding doors, lids or doors or to fix the ejection device 6 to the furniture body 2 or a fixed part of the extraction guide and give rise to ejection through a driver arranged in the mobile furniture part or in a mobile part of the extraction guide.

In figure 3 the ejection device 6 is represented, which has a casing 10 that can be fixed to the movable furniture part 3, in which a linearly movable carriage 11 is held. Carriage 11 is prestressed by means of a spring 12 in casing 10, a first end 13 being attached to carriage 11 and an end 14 opposite to casing 10. A projection 35 is provided on carriage 11 as actuating element. , which is supported on the angular driver 7, to eject the movable furniture part 3 through a relative movement of the carriage 11 in the housing 10. For the transmission of forces from the carriage 11 to the movable furniture part 3 or conversely, different alternatives are known in the state of the art, which can be used in this case. The spring 12 is configured as a tension spring, which is fixed with the second end 14 to a holder 15 of the housing 10. It is also possible to use a pressure spring instead of a tension spring, the second end having to be fixed then. end 14 in Figure 3 from the left side opposite a clamp.

In addition, a toothed bar 16 or a locking bar is configured in the housing 10, to which a locking lever 17 can be hooked as a return lock. A toothed bar 16 has teeth for the locking of the locking lever 17 and the locking strip, which can replace the toothed bar 16, has other locking elements, for example openings or recesses. The locking lever 17 has a latching element 18 in the form of a hook or tooth, which can be inserted into the tooth contour of the toothed bar 16. The locking lever 17 is mounted so as to be displaceable via a guide element 19 on a guide rail 33, which is configured in the housing 10. The guide element 19 also forms a pivot axis for the locking lever 17, which is guided with a control element 23 by a Bend guide 24 on the carriage 11. In this case, the control element 23 is positioned on the opposite side to the coupling element 18.

In figure 3 the ejection device 6 is shown in an open position, in which the spring 12 is at least partially released and the locking lever 17 has reached an end position in the guide rail 33. In case of If the ejection device 6 has to be tensioned again, the carriage 11 is moved through the coupling to the angular driver 7 and the projection 35, as a result of which the guide element 19, which can be configured for example as a pin, is moves along the end section 32 of the guide rail 33, until the guide element 19 reaches a rake inclination 25, which moves the locking lever 17 in the direction of the toothed bar 16. Due to this the latch element 18 accesses a position directly adjacent to tooth bar 16.

If the tensioning process is now interrupted, a tension spring 20 pulls the locking lever 17 into a latching position and thereby fixes the locking lever 17 to the toothed bar 16. The tension spring 20 is attached at one end to a holder 21 in the housing 10 and at the opposite end fixed by a fixing point 22 to the locking lever 17. The fixing point 22 is located between the guide element 19 and the clamping element. latch 18. By attaching the locking lever 17 to the toothed bar 16 the carriage 11 can no longer move through the force of the spring 12 in the housing 10, so that an ejection movement is interrupted.

If the movable furniture part 3 now continues to move in the closing direction, the carriage 11 presses through the curve guide 24 on the locking lever 17, and the latter is released from the toothed bar 16. The guide element 19 continues to move along the first section 34 of guide rail 33, which is adjacent to tooth bar 16, until guide element 19 reaches a rake 26 and moves away from tooth bar 16 toward a holding or holding section 27. Adjacent to the holding or holding section 27 is a plunger 28 with a holding housing 29, the plunger 28 being prestressed by a spring 30 towards the holding position. The locking lever 17 with the guide element 19 can be locked in the holding or holding section 27 with spring 12 tensioned, so that the movable furniture part 3 is held in the closed position. When the ejection device is combined with a self-retracting device, the spring 12 can be locked already before reaching the closed position in the spring-tensioned holding or holding section 27. The closed position can then be maintained for example by the self-retracting device or other element. The closed position basically does not have to be predetermined by the holding or clamping section 27 for the spring 12. To eject the movable furniture part in the opening direction, the movable furniture part is pressed inwards or inserted and as a result the pusher 28 is raised against the force of the spring 30 of the holding or clamping section 27, so that the locking lever 17 and the guide element 19 are released, so that the guide element 19 can move along a second section 31 along guide rail 33, which is further from toothed bar 16 than first section 34. Locking element 17 can now move along guide rail guides 33 toward end section 32 to an end position.

The position of the locking lever 17 in an opening movement is shown in figure 4. The locking lever 17 is separated from the toothed bar 16 and is forcibly guided by the guide element 19, as well as the curve guide 24 on the carriage 11. As soon as the locking lever 17 has assumed an end position, the movable furniture part can continue to move independently of the ejection device 6 in the opening direction, before the next closing process can begin and tensioned.

List of references

1 Furniture

2 Cabinet body

3 Furniture part

4 Front panel

5 Removal guide

6 Ejection device

7 Dragger

8 Side frame

9 Mounting bracket

10 Housing

11 Cart

12 Spring

13 Extreme

Extreme

Subjection

Toothed bar Locking lever Hook element Guide element Tension spring Clamp

Attachment point Control element Curve guide Rake rake Attack rake Clamping section Pusher Retaining housing Spring

Section

End section Guide rail Section

Outgoing

Claims (12)

1. Ejection device (6) for a mobile furniture part (3), with an actuating element (35) prestressed through at least one spring (12), by means of which the mobile furniture part (3) can move from a closed position to an open position, the at least one spring (12) being able to move in the event of a closing or opening movement of the furniture part (3) along a stretch of travel, to a tensioned position, and the furniture part (3) can be locked in the closing position with at least one tensioned spring (12), a return lock being provided, which limits the opening or closing movement of the part of movable furniture (3), when the tensioning of the spring (12) in the event of a closing or opening movement of the furniture part (3) has not yet been completed, the return lock having a locking lever (17) which can move along a guide rail (33), which in the event of a closing or opening movement of the pair The movable furniture unit can be hooked when the tensioning process is interrupted with a toothed bar (16) or a locking bar, the locking lever (17) being able to move through a guide element (19) along the guide rail. guide (33) configured in the housing (10), characterized in that the guide rail (33) has a loop-shaped section and a first section (34) of the guide rail (33) for the tensioning process is arranged closer to the toothed bar (16) than a second section (31) of the guide rail (33) for the opening movement. Ejection device according to claim 1, characterized in that the ejection device (6) has a housing (10), through which a prestressed carriage (11) is linearly guided through the at least one spring (12 ), with the actuating element (35). Ejection device according to claim 1 or 2, characterized in that the locking lever (17) has a control element (23), which is engaged with a curve guide (24) on the carriage ( eleven). Ejection device according to one of the preceding claims, characterized in that the locking lever (17) is prestressed via a tension spring (20) towards the latching position. Ejection device according to one of the preceding claims, characterized in that a holding or holding section (27) is provided on the guide rail (33) for locking the spring (12) in the tensioned position. Ejection device according to one of the preceding claims, characterized in that the locking lever (17) is mounted rotatably around the guide element (19) and the guide element (19) is arranged between an element hook (18) for hooking to the toothed bar (16) or to the locking bar and a control element (23). Ejection device according to one of the preceding claims, characterized in that the locking lever (17) has a latching element (18). Ejection device according to claim 7, characterized in that the hooking element (18) is guided during the tensioning process separately from the toothed bar (16). Ejection device according to claim 8, characterized in that the hooking element (18) moves essentially linearly during the tensioning process. Furniture with a movable furniture part (3) in the form of a drawer or a sliding door, characterized in that the movable furniture part can be moved with an ejection device according to one of the preceding claims. Furniture with a movable furniture part as a door or lid, characterized in that the movable furniture part can be moved with an ejection device according to one of the preceding claims. Furniture according to claim 10 or 11, characterized in that the ejection device is combined with a separate or integrated self-retraction device.