EP3531868A1

EP3531868A1 - Pushing-out device for a movable furniture part, piece of furniture and method for opening a movable furniture part

Info

Publication number: EP3531868A1
Application number: EP17764598.3A
Authority: EP
Inventors: Stefan Klaus; Michael Schwarz
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2016-10-27
Filing date: 2017-09-11
Publication date: 2019-09-04
Anticipated expiration: 2037-09-11
Also published as: DE102016120590A1; WO2018077521A1; EP3531868B1; CN109890251A; CN109890251B; ES2806406T3

Abstract

A pushing-out device for a movable furniture part, in particular a drawer (3), comprises a drive element (9) which is prestressed by an energy store, wherein, for unlocking of a locking device, the energy store drives the drive element (9) relative to a guide (80) in order to shift the movable furniture part out in the opening direction and the locking device can be unlocked by virtue of a front panel (4) of the movable furniture part being pushed from a closed position into an excess-pressure position, by the drive element (9) being moved relative to the guide (80), wherein a mechanical sensor (16, 24) is provided and is coupled to the locking device via mechanical transmission means (12, 14, 22, 29) and, upon movement of the front panel (4), the locking device can also be unlocked by the mechanical sensor (16, 24). The invention also relates to a piece of furniture having such a pushing-out device and to a method for opening a movable furniture part.

Description

Discharge device for a movable furniture part, furniture and processes for

Opening a movable furniture part

The present invention relates to an ejection device for a movable furniture part, in particular a drawer, with a drive element which is biased by a force accumulator, wherein upon unlocking of a locking device, the energy accumulator drives the drive element relative to a guide to eject the movable furniture part in the opening direction, and the latch means is unlockable by pushing a front panel of the movable furniture member from a closed position to an overcharge position by moving the drive member relative to the guide, and a cabinet having such an ejector and a method of opening a movable furniture member.

EP 2 067 418 A1 discloses an ejection device for a movable furniture part, in which a pivotable lever is driven by an electric motor. A trigger serves to activate the ejection device, which is connected via a cable to the ejection device. The use of electric motors on furniture is complex due to the cabling and also leads to an energy consumption that is not present in mechanical ejectors. EP 1 504 696 A2 discloses a cabinet element with an extendable

Drawer, which is held in a closed position by a locking device. About a spring can be ejected in the opening direction after unlocking the locking device of the drawer. To release the locking device only one switching element is provided. Although the use of a mechanical ejection device of

Energy consumption can be avoided, however, the additional switching element for the user is visually not always findable and the lock without actuation of the switching element can not be unlocked, so that the drawer is not opened.

In addition, ejection devices for a movable furniture part are known (DE 20 2006 012 976 U1), in which a mechanical ejection of the furniture part takes place via a power storage. The energy storage device may be locked in a closed position, which is about a pressing of the movable furniture part in a Overpressure is unlocked. In such push-to-open hardware, however, there is the problem that with high front panels a depression of the movable furniture part for unlocking is not sufficient when the front panel is operated in an upper area.

It is therefore an object of the present invention to provide an ejection device for a movable furniture part, a piece of furniture and a method for opening a movable furniture part that have increased reliability even with high front panels.

This object is achieved with an ejection device with the features of claim 1, a piece of furniture with the features of claim 1 0 and a method having the features of claim 1 3. The ejection device according to the invention comprises on the one hand a drive element which is biased by a force accumulator and unlocking a locking device for ejecting the movable furniture part in the opening direction, and additionally a mechanical sensor which is coupled via mechanical transmission means with the locking device, wherein upon movement of the front panel the locking device can also be unlocked via the mechanical sensor. As a result, upon operation of the front panel for unlocking the locking device, the functional reliability can be increased, since, on the one hand, the drive element and, on the other hand, the mechanical sensor can be moved when depressing to effect unlocking. This detection of a movement of the front panel from the closed position to an overpressure position thus takes place at different points of the front panel, so that a pivoting or a change in shape of the front panel by the force when pressing less significant, as if the detection of the movement only on the Ausstoßvorrich - done.

A mechanical sensor in the sense of the application is not a further ejection device, but merely a sensor which detects the movement of the front panel in an overpressure position and thereby causes an unlocking of the locking device on the ejection device. Only the ejection device has correspondingly strong energy storage, which can make an ejection of the movable furniture part. The drive element is preferably arranged adjacent to a pullout guide in a lower region behind the front panel. In contrast, the mechanical sensor is positioned at a distance from the drive element on the front panel, in particular in a region which is at least 30 cm higher or lower in vertical alignment than the drive element. As a result, the sensor can also detect a depression of the front panel when the front panel is operated in the upper area. For this purpose, the mechanical sensor can be positioned, for example, in an upper half of the front panel, in particular in an upper quarter of the front panel.

In a first embodiment, the mechanical sensor has a plunger which can be directly or indirectly applied to an inner side of the front panel in order to detect a movement of the front panel. Alternatively, the mechanical sensor may also include a plunger which is held on the front panel and abuts against an abutment which is fixed to the furniture body or is formed integrally therewith. If the ejection device is movable together with the movable furniture part, the mechanical sensor is preferably located on the front panel, while in a fixation of the extension device on the furniture body of the mechanical sensor is preferably also fixed to the furniture body. Instead of a linearly movable plunger and a pivotable lever for detecting a movement of the front panel can be used.

For a reliable transmission of power from the mechanical sensor to the locking device on the ejection device, the mechanical transmission means preferably comprise at least one toothed wheel or bevel gear which rotatably drives a shaft. As a result, even larger distances can be safely bridged over the mechanical transmission means. Other mechanical solutions instead of a gear such as e.g. a universal joint are also conceivable here.

A reliable power transmission from the mechanical sensor to the locking device can also be achieved via a Bowden cable or a cable control. For this purpose, a deflecting lever can preferably be provided on the sensor in order to move during a sliding movement of a plunger of the

Sensors to cause a pull on the rope control or the Bowden cable.

According to the invention, a piece of furniture is also provided with a furniture body and at least one movable furniture part with a front panel, which provides a Having inventive ejection device. Preferably, at least two ejector devices are provided, which are coupled to each other via synchronization means, wherein the synchronization means ensure that when unlocking a locking device of a first ejection device and the locking device of the other second ejection device is unlocked. The movable furniture part can be designed as a drawer, which is held on opposite sides of a drawer guide movable on the furniture body.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figure 1 is a perspective view of a cabinet according to the invention with a drawer;

Figure 2 is a perspective view of the furniture of Figure 2 without drawer;

Figure 3 is a perspective view of the ejection device of the furniture of Figure 1;

FIGS. 4A and 4B show two views of details of the ejection device of FIG

FIG. 3;

Figure 5 is a side view of the furniture of Figure 1 with the

Drawer in the closed position;

FIGS. 6A to 6C show several views of the furniture of FIG. 1 with mounted ejection device;

Figure 7 is an exploded perspective view of a part of the ejection device;

Figures 8A to 8C show several views of the front panel with the individual

Operating areas for unlocking the ejection device;

Figure 9 is a perspective view of a piece of furniture according to a second embodiment; FIGS. 10A and 10B show two views of the furniture of FIG. 9;

Figure 1 1 is a view of the furniture of Figure 9 without front panel;

Figures 1 2A and 12B show two views of the ejection device of the furniture of Figure 9;

Figure 1 3 is a perspective view of a piece of furniture according to a further embodiment;

Figure 14 is a perspective view of the furniture of Figure 1 3 without pusher element; Figure 1 5 is a perspective view of an inventive

Ejector for the furniture of Figure 1 3;

Figure 1 6 is a detail view of the Bowden cable of the ejector of Figure 1 5;

Figures 1 7A and 17B show two views of the ejection device in one

Closed position;

FIGS. 18A and 18B show two views of the ejection device in an overrun position;

Figure 9 is an exploded perspective view of the ejector sensor, and Figures 20A through 20C are several views of the ejector sensor.

A piece of furniture 1 comprises a furniture body 2, on which a drawer 3 is movably mounted. The drawer 3 has on its front side a front panel 4, which projects beyond the drawer 3 upwards.

2, the furniture 1 is shown without the drawer 3, wherein it can be seen that on opposite side walls of the furniture body a pullout guide 5 is provided which has a movable running rail 6, on which the drawer 3 is supported. The pullout guide 5 is fixed to a bracket 7 which is fixed to the side wall. Further, a holder 50 is provided to fix a housing 8 of an ejection device. At each pull-out guide 5, a housing 8 is provided, wherein synchronization means 1 0 are provided in the form of a rod in order to effect a simultaneous unlocking of the two ejection devices.

In Figure 3, the entire ejection device without drawer 3 and furniture body 2 is shown. On each housing 8 there is a drive element 9, which is preloaded by means of a force-biasing device and which can be moved along a guide on the housing 8 and is held in a closed position by a locking device. In the housing 8, the ejection device may for example be formed as disclosed in DE 10 201 6 1 1 3 044.

On the housing 8, an actuating shaft 1 1 is rotatably mounted, which serves to unlock the locking device. The actuating shaft 1 1 is rotatably connected on one side with the rod of the synchronization means 1 0 and connected on the opposite side with a shaft 1 2, which is coupled to a mechanical sensor. The shaft 1 2 is for this purpose connected to a deflecting element 1 3 with a vertical shaft 14 which is held at an upper bearing 1 5. Above the storage 1 5 is a linearly movable plunger 1 6, by pressing the front panel 4 of a

Closed position can be actuated in an overpressure position. The plunger 1 6 is arranged behind a cover 1 7.

The plunger 1 6 is further biased by a spring 90 in a protruding position. On the plunger 1 6 a rack portion 18 is formed, which is in engagement with a ring gear on the vertical shaft 14. With a displacement of the plunger 1 6 in Eindrückrichtung thus the vertical shaft 14 is rotated, which passes this rotational movement via a gear transmission to the shaft 12, so that by the movement of the plunger 1 6 and the actuating shaft 1 1 can be rotated to a locking device in the housing 8 to unlock.

In Figure 5, the drawer 3 is shown in the furniture body 2, in which the front panel 4 has been moved from a closed position to an overpress position. In an upper region of the front panel 4, the plunger 1 6 is located on an inner side, so that an indenting movement is detected. Is the front panel de 4 depressed in a lower region, the drive element 9 also moves slightly in the closing direction, so that an unlocking of the locking device can be effected via the drive element 9. Since the front panel 4 has a certain mobility, so a triggering of the locking device can be effected both via the drive element 9 as well as the mechanical sensor with the plunger 1 6.

In Figure 6, the furniture body 2 is shown, in which the vertical shaft 14 is held on the storage 1 5 and the deflecting element 13. The deflecting element 1 3 and the bearing 15 each comprise a cup-shaped housing which is integrated in the side wall of the furniture body 2. At the deflecting element 13 gears of the vertical shaft 14 and the shaft 1 2 are engaged with each other, so that a rotational movement can be transmitted. FIG. 7 shows the housing 8 of the ejection device, which has an upper housing part 81 and a lower housing part in which a force accumulator and the locking device are accommodated. About the power storage, the drive element 9 is applied, which bears against a contact element which is fixed to the drawer 3 or is formed integrally therewith. The drive element 9 comprises a contact surface 95 which can be brought into engagement with the contact element. In the drive element 9, a magnet 92 is further arranged, the magnetic forces ensure that when using a metallic contact element via the drive element 9 not only pressure but also tensile forces can be transmitted. The drive element 9 further comprises a threaded rod 91, on which a knurled nut 93 is rotatably supported, which is rotatably held on a driver 94, but immovable in the axial direction. Thereby, a positioning of the drive element 9 in the closing and opening direction by turning the knurled nut 93 done. On the housing 8, a receptacle 82 is also provided for the actuating shaft 1 1, via which the locking device can be unlocked.

In Figure 8A, the front panel 4 is shown schematically, wherein an actuating portion 40 is shown, via which the locking means on the two ejection devices can be unlocked when acting on the front panel 4, an actuating force in the closing direction. The actuating area 40 is arranged only in the lower region of the front panel 4, since in this area the drive elements 9 are moved relative to the guide 80 via the pushing-in movement of the drawer 3, so that an unlocking of the locking mechanism is achieved. can be effected device. If the front panel 4, however, operated in the upper area, the front panel 4 tilts around the attachment points in the lower region of the front panel, so that due to the inclination of the front panel 4, a release does not take place on the movement of the drive elements 9.

In Figure 8B, the actuating portion 41 for the plunger 1 6 is shown. If the front panel in the upper actuating portion 41 is acted upon by a force in Eindrückrichtung, the movement of the front panel 4 can be detected via the plunger 1 6, the mechanical transmission means with the vertical shaft 14 and the shaft 1 2 ensure that the actuating shaft 1 is rotated, which also leads to an unlocking of the locking device. When pressing the front panel 4 only in a lower area, the front panel is tilted, so that the arranged in the upper region plunger 1 6 no longer provide reliable unlocking of the locking device. Therefore, the two drive elements 9 and the plunger 1 6 different actuation areas 40 and 41st FIG. 8C shows the actuation regions 40 and 41 when the ejection device is designed in accordance with FIG. 3, so that both in the upper region via two mechanical sensors and in the region of the pull-out guide 5 a detection of an indenting movement of the front diaphragm 4 via the drive elements 9 takes place. The entire front panel is covered by the operating areas 40 and 41, so that an actuating force can be applied at any point of the front panel 4 for unlocking the two locking devices. If the actuating force applied only in the upper region of the front panel 4, there is an unlocking on the plunger 1 6, while in an indenting movement by an actuating force in the lower region, the drive elements 9 cause an unlocking. In a central region of the front panel 4, the operating areas 40 and 41 may overlap, so that the ejection devices can be triggered by the drive elements 9 and the plunger 1 6. For the user, however, it is not recognizable from the outside, which element causes the unlocking, but only the result of the unlocking is recognizable, since the drawer is moved over the two ejection devices in the opening direction.

In Figures 9 to 1 2B, a second embodiment of a piece of furniture 1 is shown, in which a drawer 3 can be ejected via an ejection device according to the invention. However, the ejection device is not stationary fixed to the furniture body 2, but to the drawer 3. This is initially in upper region of the front panel 4, two mechanical sensors 20 are provided, each having a cup-shaped housing 22, on which a guide 23 is provided for a movable plunger 24. The movable plunger 24 has a rack portion 25, which is in engagement with a rotatable gear 26. The rotatable gear 26 is held on a bearing 27 on the housing 22 and rotatably connected to a vertical shaft 21.

Alternatively, instead of the linearly guided plunger 24 and the gear transmission of the plunger stroke in a rotational movement of the vertical shaft 21 and a rotary lever rotatably on the vertical shaft 21 may be arranged. The rotary lever detects this, the Eindrückbewegung the front panel 4 and offset the mounted on the front panel shaft 21 in rotation.

In Figure 1 1, the furniture 1 without the front panel 4 is shown. The drawer 3 is movably mounted on opposite sides via pull-5. On the furniture body 2, a strut 36 is mounted in the upper region between two side walls 37, to which two spaced abutment 35 are provided, on each of which a plunger 24 is supported. If the front panel 4 is brought from a closed position to an overpressure position in the upper area, the plunger 24 is moved relative to the guide 23, whereby the

Gear 26 is rotated and thus the vertical shaft 21 rotates. The vertical shaft 21 transmits the rotary motion via a deflection device 28 to a horizontal shaft 29, as shown in Figure 12B. The horizontal shaft 29 is connected via teeth 30 in engagement with teeth 31 of an actuating shaft 32 which is rotatably mounted on the housing 8 in order to effect a release of the locking device during a rotational movement. Also in the embodiment of Figure 9, the two housing 8 with the drive elements 9 via synchronization means 1 0 in the form of a rod connected to each other, so that when unlocking an ejector and the other ejector is unlocked. The drive element 9 is supported in this embodiment on a stationary holder, so that after unlocking the drive element 9 along the guide 80 can be moved to eject the drawer 3 in the opening direction. In Figure 1 3, another embodiment of a piece of furniture 1 with a furniture body 2 and a drawer with a front panel 4 is shown. As can be seen from the view of FIG. 14, pull-out guides 5 are provided on opposite side walls of the furniture body 2, wherein an ejection device with a housing 8 is provided on each pull-out guide 5 and the two ejection devices are coupled together via a synchronization means 10 in the form of a shaft.

Each ejection device is also connected to a sensor 60, which is fixed at a distance from the pull-out guide 5 on a side wall of the furniture body 2. Unlike the previous embodiments, the sensor 60 is connected to the ejection device via a Bowden cable, which comprises a sheath 55 and a cable 58 slidably mounted thereon. The ejection device with the sensor 60 is shown in Figure 1 5 without the furniture body 2. The envelope 55 is arcuately guided over a first deflection 56 and is guided via a second deflection 57 to the ejection device, wherein the deflections 56 and 57 have an arcuate receptacle for the enclosure 55 so that the rope 58 is not kinked and smoothly within the enclosure 55 can be moved. The cable 58 is connected at the end to an adapter 59, which is coupled to the ejection device, for example via a rotatably mounted lever which is non-rotatably mounted on the actuating shaft 1 1, so that when pulled on the cable 58, the ejection device is triggered.

Figure 1 6 shows the course of the enclosure 55 at the deflections 56 and 57, which may be made of flexible material and each arcuate guides for the enclosure 55 and the cable 58 form. The function of the sensor 60 is shown in FIGS. 17A and 17B. The sensor 60 comprises a movably mounted plunger 61, which is arranged in a closed position of the front panel 4 on the inside of the front panel 4 and can optionally also abut against it. If now the ejection device is to be unlocked, the front panel 4 is moved against the plunger 61 in an override position, which is shown in FIGS. 18A and 18B. By pressing the plunger 61, the cable 58 of the Bowden cable is pulled over a mechanism to be explained below, which moves relative to the enclosure 55. By pulling the cable 58, the actuating shaft 1 1 is rotated and thus unlocks the ejector, as already explained above with reference to the other embodiments.

In Figure 1 9, the sensor 60 is shown in an exploded view. The sensor 60 comprises two housing parts 63, which are fixed to a side wall of the furniture body 2. On the housing parts 63 is a receptacle 72 for a Deflection lever 70 is formed, which engages via pins 71 in the receptacles 72 and thus rotatably supported in the housing. The reversing lever 70 includes two arms extending from opposite directions in opposite directions.

On the sensor 60 means for tensioning the cable 58 are provided, wherein one end of the cable 58 is fixed to a slider with a threaded pin 67. The threaded pin 67 is in engagement with a nut 66 which is supported on a sleeve 65, optionally also rotatably mounted thereon. The sleeve 65 is supported on a projection 64 of the housing parts 63, so that the distance between the slider and the threaded pin 67 relative to the housing parts 63 can be changed by turning the nut 66, which leads to tensioning of the cable 58. The slider with the threaded pin 67 has on the opposite side a bearing surface 68, which serves to support a spring 69 which is supported on the opposite side on a carriage 73.

The carriage 73 comprises a threaded pin 74, on which the plunger 61 is held, which is designed as a threaded sleeve or nut, so that the position of the plunger 61 relative to the carriage 73 in the direction of movement of the carriage 73 is adjustable.

The reversing lever 70 is movable together with the slider and engages with an arm in a receptacle adjacent to the abutment surface 68, as shown in Figures 20A to 20C. When the plunger 61 is pressed in via the front panel 4, a stop surface 75 of the slider 73 acts on the first arm of the reversing lever 70, which thereby rotates clockwise in FIG. 20C against the force of the spring 69. By turning the reversing lever 70, the second arm of the reversing lever 70 is pressed against the back of the abutment surface 68 and thus moves the slider to the left in Figure 20C, causing the cable 58 to move relative to the sleeve 65. By pulling on the cable 58 thus the actuating shaft 1 1 is rotated and the ejector unlocked. Other mechanisms can be used on the sensor 60 to cause a sliding movement of a plunger 61 in a pulling movement of the cable 58. After releasing the front panel 4, the starting position can be restored via the spring 69, by turning the reversing lever 70 and moving the plunger 61.

In the illustrated exemplary embodiments, each ejection device has a mechanical sensor in order to provide an indenting movement of the front cover 4 to detect, wherein the two ejection devices are each coupled to such a sensor. Of course, it is also possible to couple more than one mechanical sensor per ejection device, for example if a plurality of tappets 1 6 or 24 are arranged distributed over the height of the front cover 4.

LIST OF REFERENCE NUMBERS

1 furniture

2 furniture carcass

3 drawer

4 front panel

5 pullout guide

6 track rail

7 bracket

8 housing

9 drive element

10 synchronization means

1 1 actuating shaft

12 wave

13 deflecting element

14 wave

15 storage

1 6 pestles

17 cover

18 rack section

20 sensor

21 wave

22 housing

23 leadership

24 pestles

25 rack section

26 gear

27 Storage

28 deflection device

29 wave

30 tooth

31 tooth

32 actuating shaft

35 counter bearings

36 strut

37 side wall

40 operating range

41 operating area

50 holders 55 serving

56 diversion

57 redirection

58 rope

59 adapters

60 sensor

61 pestles

63 housing part

64 projection 65 sleeve

66 mother

67 threaded pin

68 contact surface

69 spring

70 lever

71 pegs

72 recording

73 sleds

74 Set screw 75 Stop surface

80 leadership

81 Housing top

82 Recording 90 Spring

91 threaded rod

92 magnet

93 knurled nut

94 drivers

95 contact area

Claims

claims

1 . Discharge device for a movable furniture part, in particular a drawer (3), with a drive element (9) which is biased by a force storage device, wherein when unlocking a locking device of the energy storage, the drive element (9) relative to a guide (80) drives to ejecting the movable furniture part in the opening direction, and the locking device can be unlocked by pressing a front panel (4) of the movable furniture part from a closed position into an overpressing position by moving the drive element (9) relative to the guide (80), characterized in that mechanical sensor (1 6, 24) is provided, which is coupled via mechanical transmission means (12, 14, 22, 29) with the locking device and during a movement of the front panel (4) the locking device via the mechanical sensor (1 6, 24 ) is unlockable.

2. Ejecting device according to claim 1, characterized in that the drive element (9) adjacent to a pullout guide (5) in a lower region behind the front panel (4) is arranged.

3. Ejecting device according to claim 1 or 2, characterized in that the mechanical sensor (1 6, 24) spaced from the drive element (9) on the front panel (4) is positioned, in particular at least 30 cm in a vertical orientation to the drive element (9). ,

4. Ejecting device according to one of the preceding claims, characterized in that the mechanical sensor (1 6, 24) in an upper half of the front panel (4) is positioned.

5. Ejecting device according to one of the preceding claims, characterized in that the mechanical sensor (1 6, 24) has a plunger and / or rotary lever which is directly or indirectly can be applied to an inner side of the front panel (4).

6. ejection device according to one of the preceding claims, characterized in that the mechanical sensor (24) has a plunger and / or rotary lever which is slidably and / or rotatably supported on the front panel (4) and abuts against an abutment (35), which is fixed to the furniture body (2) or is formed by the furniture body.

7. Ejecting device according to one of the preceding claims, characterized in that the mechanical transmission means comprises at least one gear (30, 31) which rotatably drives a shaft (12, 32).

8. Ejecting device according to one of the preceding claims, characterized in that a Bowden cable or a cable control is provided for a power transmission from the mechanical sensor to the locking device.

9. Ejecting device according to claim 8, characterized in that on the sensor, a reversing lever (70) is provided, which causes upon depression of a plunger (61) on the sensor pulling on the Bowden cable or the cable control.

10. Furniture (1) with a furniture body (2) and at least one movable furniture part with a front panel (4), characterized in that at least one ejection device according to one of the preceding claims is provided.

1 1. Furniture according to claim 10, characterized in that at least two ejection devices are provided according to one of the preceding claims 1 to 7, which are coupled to each other via synchronization means (10), and the synchronization means (10) ensure that when unlocking a locking device of an ejection device also the locking device of the other ejector is unlocked.

12. Furniture according to claim 10 or 1 1, characterized in that the movable furniture part as a drawer (3) is formed, which is held on opposite sides of a pull-out guide (5) movable on the furniture body (2).

13. A method for opening a movable furniture part, in particular a drawer (3), comprising the following steps:

- Pressing a front panel (4) of the movable furniture part from the closed position into an overpressure position; - Detecting the movement of the front panel (4) in the closing direction via at least one of the ejection device spaced mechanical sensor (1 6, 24);

- Transmission of the movement of the sensor (1 6, 24) via mechanical transmission means to a locking device of an ejection device and unlocking the locking device, and

- Ejecting the movable furniture part in the opening direction by a biased by a force storage drive element (9).

14. The method according to claim 13, characterized in that at least two mechanical sensors (1 6, 24) are provided which detect individually or jointly a movement of the front panel (4) in the overpressure position and unlock one or more ejection devices.