EP2850011B1 - Lock for flap - Google Patents

Description

The invention relates to a locking and unlocking mechanism, a lockable flap assembly, a storage box and a method of handling a flap assembly of a storage box.

In shelving systems, there are stackable storage boxes, which have two parallel side walls, a bottom and a rear wall, are open at the top and have a partially formed front wall. Access is possible through the remaining part of the front wall. Such boxes can be stacked.

EP 2,147,867 discloses a storage box with a selectively lockable and unlockable flap. Further general state of the art is in DE 10 2008 044 062 . DE 196 23 690 . DE 10 2007 056 255 . DE 297 23 107 . DE 20 2005 020 276 . GB 2 452 750 . US Pat. No. 7,549,550 . US 5,632,392 and WO 97/29964 disclosed.

A mechanism according to the preamble of claim 1 is disclosed in US Pat. No. 6,290,081 disclosed.

Especially with frequent actuation of a system of flap and locking, it is important that the associated actuating mechanism allows the locking or unlatching quickly and wear.

It is an object of the present invention to provide a latch for cooperating with a flap of a storage box which, upon actuation of the flap and latch system, permits latching / closing / unlatching / opening rapidly and with low wear.

This object is solved by the objects with the features according to the independent claims. Further embodiments are shown in the dependent claims.

According to an embodiment of the present invention, there is provided a flap-mountable mechanism for selectively locking or unlocking the flap from a body of a storage box, the mechanism comprising two latch bodies each having an engagement portion for engaging a respective cooperating mating engagement portion of the latch Carcass and having a Abgleitschrägfläche engaging portion for engaging an actuating force, a biasing means disposed between the locking bodies and for generating a biasing force acting along a biasing biasing force for pushing apart the engagement portions (especially in the flap locked state for pressing the engagement portions against the mating engagement portions ), and a user-operable actuator (which may also be referred to as a movable, in particular pivotable, key) having two each having a Abgleitschrägfläche transmission sections for transmitting the actuating force to a respective one of the engaging portions, wherein the Abgleitschrägflächen the transmission sections and the engaging portions are cooperatively designed to slip force-transmitting when transmitting the operating force to each other, and wherein the di e Abgleitschrägflächen the attack sections each lie in a plane that is tilted relative to a normal plane to the biasing axis about two different tilt axes around.

According to another embodiment of the present invention, there is provided an unlockable flap assembly for selectively locking or unlocking a body of a storage box, the flap assembly having a flap selectively folded against and latched to the body and folded away from and unlocked from the body and having a flap mounted mechanism having the features described above for selectively locking or unlocking the flap from the body.

According to a further embodiment of the present invention, a storage box is provided for storing receiving material, wherein the storage box a body, at least partially (in particular together with a flap) a Contains receiving volume for receiving the receiving material, and having a lockable flap assembly with the features described above for selective Ver- or unlocking relative to the body.

In accordance with yet another embodiment of the present invention, there is provided a method of manipulating a flap assembly on a body of a storage box, the method comprising engaging between each engaging portion of two latch bodies of the flap assembly and a respective cooperating mating engagement portion of the body for locking the flap assembly to the body is formed, wherein a biasing means of the flap assembly between the locking bodies produces a biasing force acting along a biasing axis for pressing the engaging portions against the mating engagement portions (in the locked state), and an actuating element is actuated, whereby two each having a Abgleitschrägfläche transmitting portions of the actuating element an actuating force on a each of a respective Abgleitschrägfläche having attack portions of the locking body transferred, so that d The Abgleitschrägflächen the transfer sections and the engaging portions when transmitting the actuating force to slide together force-transmitting, whereby the engaging portions and the counter-engagement portions for unlocking the flap assembly are disengaged from the body, wherein the Abgleitschrägflächen the engaging portions each lie in a plane opposite to a normal plane to the Tensioning axis is tilted around two different tilting axes around.

According to the invention, the provision of the sliding inclined surfaces of the engagement sections with a tilt about two tilt axes and a tilting of Abgleitschrägflächen the transmission sections (especially about a tilt axis) guaranteed be that in a pivoting movement of the actuating element, a force transmission along the sliding sliding surfaces slipping off one another takes place so that during the sliding takes place a surface contact instead of a point contact. As a result, the frictional force occurring between the sliding and rubbing Gleitleitschrägflächen sliding against each other can be distributed over the surface, so that, for example, formed from a soft plastic material components (actuator and latch body) are exposed to only a very small wear. In other words, this reduces the surface pressure or reduces the pressing force per surface. The double tilting of the sliding inclined surfaces of the engaging sections thus supports the low-friction transmission of a force from a pivoting movement into a linear movement. An undesirable edge pressure can be avoided, and a desired surface contact can be ensured by the tilting of Gleitleitschrägflächen during the entire movement. With the correspondingly formed Abgleitschrägflächen a pivoting movement of the actuating element can be converted into a linear movement of the locking body.

According to one embodiment, by providing oblique outer side surfaces at engaging portions of body members biased toward the body, which oblique side surfaces are twisted by double tilting from the bias normal plane, short travel of the actuator allows a large stroke of the engagement members of the locking bodies out of Carcass out or into the body into it. This can be effected with a short operation unlocking or locking the flap. In other words, a transition between a locking or releasing the flap relative to the body can be triggered by a spatially and temporally short Umklappbewegung of the actuating element. By the double (ie with respect to two different spatial directions) inclination of Abgleitschrägflächen the attack devices is carried out at a sliding of Abgleitschrägflächen the transmission devices on the Abgleitschrägflächen the attack means a biasing device efficiently compressing power transmission.

Hereinafter, additional exemplary embodiments of the locking and unlocking mechanism, the lockable door assembly, the storage box, and the method of handling a flapper assembly of a storage box will be described.

According to one embodiment, the sliding inclined surfaces of the transmission sections can be arranged on mutually facing inner surfaces of the transmission sections. The transfer sections may be attached as vertical projections at opposite ends of, for example, a substantially plate-shaped base body of the actuating element. The active surfaces of such transmission sections can then be the mutually facing oblique and mutually angled inner surfaces of the transmission sections which converge toward one another in the direction of the base body. With a folding or folding over of the actuating element, the mutually facing oblique inner surfaces of the transmission sections can then travel on the sliding inclined surfaces of the engaging sections of the locking bodies and move them towards each other or away from each other depending on the actuating direction of the actuating element. Clearly take the transmission sections, the engaging portions laterally engaged, depending on the rotational position of the actuating element stronger or weaker.

According to one embodiment, in the direction of the free ends of the transmission sections their Abgleitschrägflächen diverge. The transfer sections can be integrally attached to a, for example, substantially plate-shaped base body of the actuating element.

According to an exemplary embodiment, in a state (locked to the body) of the mechanism, the sliding oblique surfaces of the transmission sections can each lie in a plane that is tilted relative to the normal plane to the biasing axis along exactly one tilting axis. Unlike the Abgleitschrägflächen the engaging portions of the Abgleitschrägflächen the transmission sections according to the described embodiment is not tilted along two tilt axes, but only along a single tilt axis relative to the normal plane to the biasing axis. The tilting axis and / or the tilting angle can be the same for both sliding inclined surfaces of the transmission sections, the tilting direction can be opposite to each other. This allows the Abgleitschrägflächen the transmission sections include an angle with each other. Illustratively, the plane of the slip slopes of a transfer section can be geometrically constructed by performing a single rotation of the normal plane of the biasing action about the single tilt axis.

According to one embodiment, the respective one tilting axis of the sliding inclined surfaces of the transmission sections can run perpendicular to the biasing axis. As a result, a highly symmetrical arrangement is achieved, which leads to a low-wear operation.

According to one embodiment, the two tilt axes, which are assigned to the plane of the sliding inclined surfaces of the engagement sections, both lie in the normal plane. This also promotes the high degree of symmetry of the arrangement, which leads to a low-wear operation. The tilting axes and / or the tilting angles can be the same for both sliding surfaces of the engagement sections, the tilting directions can be opposite to each other. Thereby can the Abgleitschrägflächen the attack sections include two angles with each other.

According to one embodiment, the two tilt axes, which are assigned to the plane of the sliding inclined surfaces of the engagement sections, extend perpendicular to one another. This also supports a low-wear operation.

According to one embodiment, the plane of the sliding inclined surfaces of the engaging portions may be defined by two tilting about the two tilting axes, which tilting can be associated with a tilt angle between about 5 ° and about 50 °, in particular between about 15 ° and about 40 °. The two tilt axes may have different tilt angles or identical tilt angles. Further, the tilt angle of the Abgleitschrägflächen the transfer sections may be equal to or substantially equal to one of the tilt angle of the Abgleitschrägflächen of the engaging portions may be formed, which corresponds to an identical axis of rotation.

According to one embodiment, the sliding inclined surfaces of the engagement sections may be arranged on opposite sides of the engagement sections. The locking bodies may be formed as substantially bar-shaped structures, at one end of which the engagement sections grow out as stumps or wedges. The active surfaces of these engaging portions may then be arranged on the outside, and may be engaged by the inside inclined surfaces at the transfer portions of the actuating element. Depending on the operating position of the actuating element, this engagement can be larger or smaller according to the angular positions of the corresponding inclined surfaces.

According to one exemplary embodiment, their sliding guide surfaces can converge towards free ends of the engagement sections to run. The actuator and the bolt body can together form a completely axisymmetric structure, resulting in a uniform force application result. As a result, the wear is evenly distributed to the different components. Clearly, the sliding inclined surfaces of the engaging portions may taper toward a handle portion of the actuating member, and intersect in a plane of symmetry of the arrangement.

According to one embodiment, the locking body may have as engaging portion a respective latching lug for engaging in a respective latching groove as a counter-engagement portion of the body. Alternatively, it is also possible that the engagement portion of each of the locking body has a locking groove, and that the counter-engagement portions of the body are formed as locking lugs. By this configuration, a known, for example, from EP 2,147,867 known, storage box to be equipped with the mechanism according to the invention, wherein for implementing the mechanism according to the invention only mating engagement portions must be formed in the body of the storage box, for example detent grooves or detents.

According to one embodiment, the biasing means may be formed as a compression spring whose end portions are connected to the locking body and which presses the locking body against the mating engagement portions. Such a compression spring may be a helical or spiral spring, which pushes the locking body on both sides to the outside and thereby exerts a biasing force. This is a technically less complicated design, which nevertheless ensures reliable locking.

According to one embodiment, each of the locking body may have a pin which engages in the leading end in the respective associated end portion of the compression spring. Such pins can be fitted directly to the attack sections and as for example cylindrical body engage in a hollow cylindrical recess of a coil spring to stabilize their direction of force.

According to one embodiment, each of the locking bodies may have a receiving space which receives the respective end portion of the compression spring on the outside. Thus, the compression spring can be stabilized not only on the inside, but also on the outside by the size of the receiving space is tuned to the outer outer dimension of the compression spring and this fixed, for example by clamping or positive locking.

According to one embodiment, the actuating element between a first pivot position (which may also be referred to as the first stable end position) and a second pivot position (which may also be referred to as a second stable end position) to be pivotally mounted, wherein the Abgleitschrägflächen the transmission sections and the engaging portions in the first pivot position and in the second pivot position different relative orientations (ie, different angular positions and / or different spacing positions) to each other, so that the maintained by the biasing device distance between the engaging portions in the first pivot position is greater than in the second pivoting direction. The first pivot position thus corresponds to a locking state in which the engagement portions are relatively widely spaced and locked in the mating engagement portions of the body. The second pivot position corresponds to an unlocked state in which the flap can be pivoted relative to the body because the engagement portions and the counter engagement portions are disengaged and the engagement portions are relatively little spaced apart from each other and. The transfer between these two pivotal positions can by means of mere pivoting of the actuating element between the stable initial and stable end configuration, namely, the first and second pivot positions, be accomplished.

According to one embodiment, the mechanism may be designed to be mounted on the body in such a way that the actuating element in the first pivoting position is flush with the flap and the body. In this embodiment of the storage box can be provided in a closed state, a substantially cuboid storage box with front side planar top surface, since the flap assembly terminates with the body surface. However, if the system is brought into an unlocked state, the flap can be opened to the front.

According to one embodiment, the sliding surfaces of the engagement portions may be tilted about the two tilt axes such that when transferring from the first pivot position to the second pivot position, the sliding inclined surfaces of the transfer sections initially in the first pivot position spatially closer areas of Abgleitschrägflächen the attack sections and subsequently in the first pivot position spatially further spaced apart areas of the Abgleitschrägflächen the attack sections sweeps. In other words, when transferring from the first pivoting position into the second pivoting position, the locking elements come to a continuous approach, which is ensured by the constraint condition that the sliding sliding surfaces must slide off one another. Since the transmission sections (as well as the counter-engagement sections) are arranged immovably and stationary relative to one another, the only possibility of the mechanically coupled system to avoid the force is to approach the locking elements with respect to one another. The double oblique position of the sliding inclined surfaces of the engagement sections brings about an efficient approach of the locking bodies to each other while continuously maintaining the full-surface sliding characteristic during the entire displacement process.

According to one embodiment, the mechanism may be configured such that by pivoting the actuating element from the first pivot position to the second pivot position, the compression spring is compressed. Accordingly, pivoting of the actuating element from the second pivoting position into the first pivoting position causes the compression spring to expand. Preferably, however, the compression spring is in the first and in the second pivot position in a relation to a power-free state compressed position and therefore causes a permanent bias.

According to one embodiment, the actuating element may comprise a handle, wherein the handle and the transmission sections are arranged with respect to a pivot bearing of the actuating element on opposite sides, wherein the actuating element is formed pivotable about the pivot bearing. As a handle, the portion of the actuating element is understood, which is attacked by a user as intended with the hands to operate the mechanism. The handle may be formed as a plate-shaped base body with upstream web. The pivot bearing may be aligned along a pivot axis or form this. In this way, a region of the actuating element positioned on this side of the pivot bearing can be rotated relative to an area of the actuating element arranged beyond, by and around the pivot bearing.

The pivot bearing may be formed, for example, as a film hinge. The film hinge can consist of a thin-walled portion of the actuating element, for example in the form of a fold, which allows by its flexibility limited rotational movement of the connected portions of the actuating element. A material suitable for this purpose is polypropylene.

According to one embodiment, in each of the locking body its engagement portion with its engaging portion rigid be connected. By such a rigid (or immovable and unverdrehbare) training of the active portions of a locking body, a force acting on the engaging portion force can be transmitted directly to the engaging portion on. Such a rigid locking body can be inexpensively manufactured as an injection molded part.

According to one embodiment, the transmission sections may be rigidly connected to each other in the actuating element. According to this embodiment, the actuator can be inexpensively manufactured as an injection molded part. The actuator may be formed as a rigid body, so that between the transmission sections a rigid power transmission to the attack sections and then the bolt body can be done.

According to one embodiment, the mechanism may comprise a support body on which the locking body (in particular only) is mounted longitudinally displaceable and on which the actuating element (in particular only) is pivotally mounted. Thus, apart from the two locking bodies and the actuating element, a fourth body may be provided, can be mounted on the bolt body and actuator. This support body can be mounted on the locking bodies such that they can only be displaced relative to one another along exactly one common axis. The support body may be mounted on the fastener so that it can only be pivoted along exactly one axis.

According to one embodiment, the support body may have attachment structures (for example spring hooks) for attachment to the flap. Thus, apart from supporting the locking body and the operating member, the supporting body may additionally be provided with provisions for fixing the supporting body and thus the entire mechanism to the door. As a spring hook can serve strip-shaped resilient portions which protrude from a base plate of the support body and thus resiliently corresponding recesses of the flap can be engaged. Of course, all other types of attachment structures may be provided on the support body.

According to one embodiment, the attachment structures may be disposed on opposing surfaces of the support body to secure the support body between opposing surfaces of the flap. In this way, the mechanism can be mounted protected between the outer surfaces of the flap, so that its mechanically movable parts are reliably protected in the operation against unwanted influence to the outside.

According to one embodiment, the flap and the mechanism may be configured such that, starting from a locked state, the actuator for transferring the flap assembly is to be pivoted to an unlocked state and subsequently the flap is to be folded in order to access a receiving volume of the storage box, and starting from the unlocked state, only the flap is to be folded back to close the receiving volume, whereby automatically pivots back by means of the biasing means, the actuating element for transferring the flap assembly in the locked state. Thus, only the spring force can cause the biasing device, which moves back by merely closing the flap and subsequent release of the actuating element (or the key), the actuating element under relaxation of the biasing device in the locked state. This movement can be graphically similar, such as the automatic retraction of a door handle when released. If necessary, a section of the body adjacent to the flap arrangement can also be provided with appropriate mechanical means to guide, promote or assist this automatic return movement.

According to one embodiment, the storage box may be provided with a body having a bottom, at least four side walls, and at least one flap disposed in a side wall and / or at least partially forming a side wall disposed around and parallel to a bottom portion of the body extending axis is pivoted outwardly and has two lateral tabs which create at the edges of the flap to be closed by the opening of the side wall even in the open state of the flap. To open the flap, a latch (i.e., a mechanism according to the invention) is actuated such that upon unlocking of an associated latching mechanism between the flap and latch, the flap is pivotable away from the body of the storage box. After loading or deflating the inner storage volume of the storage box, the flap can be swung back and the lock with the flap are locked again.

According to one embodiment, the flap assembly may be mounted on the body and the body may have such an open top and a closed bottom formed in such a way that in the stacked state of several similar storage boxes, the flap against both the body foldable and from the body fold away , For this purpose, in the folded state, the top of the flap and the mechanism flush with the top of the body. The storage box can be used to not only store the items contained in it, but also to offer because of the swing-out flap. The flap can also be used to refill the storage box. This is as well as the removal made possible by the side tabs that prevent lateral falling out of objects. Since you can also enter the objects in the storage box with the flap open, it is possible to use several Storage box shelves almost seamlessly stacked, since access from the top of the storage box forth for initial or subsequent filling is not required. In particular, it can be provided that the storage box has a base on the underside or the bottom of the body, wherein this base is in particular provided to effect an alignment of two stacked storage box relative to each other in the stacking. It can be provided that the outer side of the base is formed such that it fits into the opening at the top of the body. Although the base does not have the exact shape of the open top, but it should be designed so that it not only fits into it, but also excludes a lateral displacement. It is sufficient, for example, if the base rests against the corners of the inner wall of the open-top storage box. According to the invention, it can be provided that the opening at the top side of the body has a step on its inside on at least two sides. This level can be used to hold the weight of an overhead storage box. The base may be surrounded on the underside of the body on all sides by projections. These projections may in particular be formed by the outwardly slightly projecting bottom of the body. Therefore, when two storage boxes are stacked, the weight of the box above can be transferred from both these projections to the upper edge of the box below and from the lower edge of the base to said shoulders.

• Fig. 1 zeigt einen an einer Klappe montierten Mechanismus zum selektiven Ver- oder Entriegeln der Klappe gegenüber einem Korpus eines Aufbewahrungskastens gemäß einem exemplarischen Ausführungsbeispiel der Erfindung.
• Fig. 2 zeigt ein Detail des Mechanismus gemäß Fig. 1, das die Ausgestaltung der Abgleitschrägflächen veranschaulicht.
• Fig. 3 veranschaulicht geometrisch Verhältnisse von Ebenen und Kippgeraden eines Mechanismus gemäß einem exemplarischen Ausführungsbeispiel der Erfindung.
• Fig. 4 und Fig. 5 zeigen eine Rückansicht und eine Vorderansicht des an der Klappe montierten Mechanismus gemäß Fig. 1 und Fig. 2.
• Fig. 6 bis Fig. 8 zeigen unterschiedliche Ansichten des Mechanismus gemäß Fig. 1 und Fig. 2.
• Fig. 9 zeigt eine vergrößerte Ansicht zweier mittels einer Druckfeder gekoppelter Riegelkörper des Mechanismus gemäß Fig. 1 und Fig. 2.
• Fig. 10 zeigt eine Detailansicht eines an einem Stützkörper montierten Befestigungselements des Mechanismus gemäß Fig. 1 und Fig. 2.
• Fig. 11 zeigt eine räumliche Ansicht einer Klappenanordnung aus einem Mechanismus und einer Klappe gemäß einem exemplarischen Ausführungsbeispiel der Erfindung.
• Fig. 12 zeigt eine Ansicht einer Klappe, an welcher ein Mechanismus gemäß einem exemplarischen Ausführungsbeispiel der Erfindung montierbar ist.
• Fig. 13 und Fig. 14 zeigen zwei Riegelkörper eines Mechanismus gemäß einem exemplarischen Ausführungsbeispiel der Erfindung.
• Fig. 15 zeigt einen Aufbewahrungskasten gemäß einem exemplarischen Ausführungsbeispiel der Erfindung mit einer geöffneten Klappe.
• Fig. 16 zeigt den Aufbewahrungskasten gemäß Fig. 15 mit geschlossener Klappe.
• Fig. 17 zeigt den Aufbewahrungskasten gemäß Fig. 15 ohne Klappe.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the following figures.

• Fig. 1 shows a flap-mounted mechanism for selectively locking or unlocking the flap a body of a storage box according to an exemplary embodiment of the invention.
• Fig. 2 shows a detail of the mechanism according to Fig. 1 which illustrates the configuration of the sliding inclined surfaces.
• Fig. 3 Figure 12 illustrates geometric relationships of planes and tipping lines of a mechanism according to an exemplary embodiment of the invention.
• 4 and FIG. 5 show a rear view and a front view of the flap-mounted mechanism according to Fig. 1 and Fig. 2 ,
• Fig. 6 to Fig. 8 show different views of the mechanism according to Fig. 1 and Fig. 2 ,
• Fig. 9 shows an enlarged view of two coupled by a compression spring latch body of the mechanism according to Fig. 1 and Fig. 2 ,
• Fig. 10 shows a detailed view of a mounted on a support body fastener of the mechanism according to Fig. 1 and Fig. 2 ,
• Fig. 11 shows a three-dimensional view of a flap assembly of a mechanism and a flap according to an exemplary embodiment of the invention.
• Fig. 12 shows a view of a flap on which a mechanism according to an exemplary embodiment of the invention is mountable.
• FIGS. 13 and 14 show two locking bodies of a mechanism according to an exemplary embodiment of the invention.
• Fig. 15 shows a storage box according to an exemplary embodiment of the invention with an open flap.
• Fig. 16 shows the storage box according to Fig. 15 with closed flap.
• Fig. 17 shows the storage box according to Fig. 15 without a flap.

The same or similar components in different figures are provided with the same reference numerals.

Fig. 1 FIG. 12 shows a flap assembly 130 comprised of a flap 100 and a locking mechanism 150 mounted thereon, the flap assembly 130 being selectively configured for locking to a body, not shown, of a storage box, not shown. Also, the flap assembly 130 is selectively unlockable from the body of the storage box.

The in Fig. 1 not shown body may be formed as in FIGS. 15 to 17 The only specific adaptation to be made to this body 1502 is that in a coupling portion between the flap assembly 130 described in more detail below and the adjacent walls of the body 1502 mating engagement elements must be formed. For example, locking grooves may be formed on the body 1502, which are formed for receiving the locking lugs 156, 158 of the flap assembly 130 described in more detail below.

The flap 100 further described below forms part of the flap assembly 130 of the present invention. The flap 100 may be selectively folded against and latched to the body 1502 or folded away from the body 1502 and unlocked therefrom. If the flap 100 is in the locked state, it is impossible to pivot the flap 100 away from the body 1502. On the other hand, if the flap 100 is unlocked, it can be folded away from the body 1502 in order to fill or remove the receiving material from the storage box.

A second component of the flap assembly 130 is a mechanism 150 (also may be referred to as a latching means) mounted on the flap 100 for selectively locking or unlocking the flap 100 relative to the body 1502 of the storage box.

The mechanism 150 has a first latch body 152 and a second latch body 154 provided separately therefrom. The first locking body 152 has at its end a first latching lug 156 for forming an engagement with a cooperating latching groove of the body 1502. At an opposite other end, the first latch body 152 has a first engagement portion 168 that vertically grows out of a longitudinal beam of the first latch body 152. On the inside, the first engaging portion 168 has a first latch body sliding inclined surface 160. The first engaging portion 168 is for introducing or engaging an operating force that can be applied by a user to the first latch body 152.

A second latch body 154 is mirror-symmetrical to and constructed in accordance with the first latch body 152 and has a second latching lug 158 for forming engagement with a cooperating latching groove of the body 1502. Further, the second latch body 154 has a second latch body slide inclined surface 162 on an inner side of a second engagement portion 170 The user-applied actuating force can also act on the second engagement section 170. As in the case of the locking body 152, the latching lug 158 and the engagement section 170 are rigidly coupled and spaced from one another by a longitudinal beam arranged therebetween even in the case of the locking body 154.

Between the first locking body 152 and the second locking body 154, a helical spring 172 designed as a compression spring is interposed. The coil spring 172 generates a spring or biasing force acting along a biasing axis 180 for pressing the locking lugs 156, 158 against the in Fig. 1 A virtual normal plane to the bias axis 1802, ie, a plane whose normal vector (ie, a vector perpendicular to this plane) is oriented parallel to the bias axis 180, is indicated at 182 and is perpendicular to the plane of the paper from Fig. 1 oriented.

Another component of the mechanism 150 is a user-operable actuator 174. The actuator 174 has a plate-like base body 177, according to which Fig. 1 underside end portion two laterally molded transmission sections 176, 178 survive. The first transfer section 176 has a first transmission slide-off sloping surface 190 on the inside. The second transfer section 178 has a second transfer slide-off slope 192 on the inside. Both transfer slide-off slopes 190, 192 serve to transmit a user applied operating force to a respective one of the engagement sections 168, 170 The first transmission portion 176 transmits the operation force to the first engagement portion 168, whereas the second transmission portion 178 transmits the operation force to the second engagement portion 170.

As Fig. 1 it can be seen, the first Übertragungsabgleitschrägfläche 190 adapted to the first Angriffsabgleitschrägfläche 160 out, so that the first Übertragungsabgleitschrägfläche 190 and the first Angriffsabgleitschrägfläche 160 frictionally cooperate. Similarly, the second transfer slide-off slope 192 is adapted to the second slide-off slope inclined surface 162 so that the second transfer slide-off slope 192 and the second slide-off slide inclined surface 162 frictionally cooperate. The respective cooperating Gleitleitschrägflächenpaare 190 and 160 or 192 and 162 slide on each other when transmitting the operating force force-transmitting. In this case, the actuation force applied by the user is rigidly transmitted to the transmission sections 176, 178 by the actuating element 174, which can not carry out a compensation movement during the frictional sliding movement itself. A compensating movement is performed during slipping but by the resiliently mounted engagement portions 168, 170, which feel the pressure force of the coil spring 172 during their relative movement to each other, but otherwise freely along the biasing axis 180 are mutually movable. On the other hand, their free movement is limited by the abutment of the locking lugs 156, 158 in the locking grooves of the body 1502. As a result, a pivoting of the actuating element 174 leads to a displacement of the latch body 152, 154, depending on the pivoting direction inwards or outwards.

The first engagement slide bevel 160 is a flat surface. This lies in a plane that is tilted relative to the normal plane 182 to the biasing axis 180 about two mutually orthogonal tilt axes 184, 186 around. The normal plane 182 is perpendicular to the paper plane according to FIG Fig. 1 and is oriented perpendicular to the biasing axis 180, which in turn describes the force action of the coil spring 172. A geometric image of the normal plane 182 on the plane of the first attack sliding inclined surface 160 requires a first tilt of the normal plane 182 about one perpendicular to the paper plane of Fig. 1 oriented first tilt axis 184 and a second tilt about one in the paper plane of Fig. 1 lying second tilting axis 186. The two tilt angle can be, for example 20 ° to 30 °. A geometrical mapping of the normal plane 182 to the plane of the second attack sliding bevel 162 requires a first tilt of the normal plane 182 about perpendicular to the paper plane of FIG Fig. 1 oriented first tilt axis 184 and a second tilt around the in the Paper plane of Fig. 1 The second tilting axis 186 lies schematically. The first tilt leads to a tilting in the plane of the paper and the second tilting leads to a tilting out of the plane of the paper. The tilt angles of the first tilt may be equal in magnitude but signally opposite in magnitude (ie, clockwise and counterclockwise) for the first engagement slide bevel 160 and for the second engagement slide bevel 162. The second tilting can take place for the first attack slide-out inclined surface 160 and for the second attack slide-off inclined face 162 in each case on the outside and in each case into the plane of the paper. Also, the second attack slide inclined surface 162 is a flat surface.

As further in Fig. 1 shown, the Angriffsabgleitschrägflächen 160, 162 on opposite sides of the engaging portions 168, 170 are arranged. Towards free ends 194, 196 of the engagement sections 168, 170, the attack slide-off slopes 160, 192 converge toward each other.

As Fig. 1 it can be seen, the Übertragungsabgleitschrägflächen 190, 192 arranged on mutually facing inner surfaces of the first and the second transfer section 176, 178. Towards free ends 104, 106 of the transfer sections 176, 178, their transfer slide-off sloping surfaces 190, 192, which are also flat surfaces, run apart from each other.

While the planes of the Abreifabgleitschrägflächen 160, 162 emerge from an imaginary double tilt with respect to the normal plane 182, lie in the in Fig. 1 In the illustrated locked state of the mechanism 150, the transfer slide-off ramps 190, 192 in a respective plane that is tilted with respect to the normal plane 182 of the biasing axle 190 along exactly one tilt axis each. This single tilting axis is for the first transmission slide-off slope 190 with reference numeral 198 and for the second Übertragungsabgleitschrägfläche 192 indicated by reference numeral 148. The tilting lines or axes 198, 148 are parallel to the tilting lines 184 and according to FIG Fig. 1 oriented perpendicular to the plane of the drawing. At the same time, these tilting axes 198, 148 are arranged perpendicular to the biasing axis 190. They also lie in the normal plane 182. A geometric mapping of the normal plane 182 to the plane of the first transfer slant slope 190 requires a single tilt of the normal plane 182 about perpendicular to the plane of the paper Fig. 1 oriented tilt axis 198. Geometric mapping of the normal plane 182 to the plane of the second transfer slide bevel 192 requires a single tilt of the normal plane 182 about perpendicular to the plane of the paper Fig. 1 oriented tilt axis 148. The tilt angles of the tilt may be equal in magnitude but signally opposite in magnitude (ie, clockwise and counterclockwise) for the first transmission slide bevel 190 and for the second transmit slide bevel 192.

The coil spring 170 is, as in Fig. 1 shown completely symmetrically disposed between the first latch body 152 and the second latch body 154. More specifically, a first end portion of the coil spring 172 is connected to the first latch body 152, and a second, opposite end portion of the coil spring 172 is connected to the second latch body 154. As a result, the spiral spring 172 biases the latching lugs 156, 158 outward on both sides and thus presses them into the latching grooves of the carcass 1502 in the locked state.

As in Fig. 1 is shown, an end portion of the first latch body 152, which is opposite to the first latching lug 156, a first cylindrical pin 108 as a guide body. This is directly added to the engaging portion 168, which engages at the first end of the coil spring 172 in the cavity and the effective direction of the Spiral spring 172 thus gives a guide. Similarly, the second locking body 154 has a second, cylindrically shaped pin 110 as a guide body, which is opposite to the second latching lug 158 and engages leading into the Windungsinnere at the second end of the coil spring 172. The guiding action of the pins 108, 110, in combination with the mounting of the latch bodies 152, 154 in the mechanism 150, causes the coil spring 172 to compress or expand only along its longitudinal axis and transmit force to the latch bodies 152, 154. Thus, a forced operation is created with a defined power transmission from the coil spring 172 on the locking lugs 156, 158 accomplished.

To further assist the guiding action and the stability of the bearing of the coil spring 172, each of the latch bodies 152, 154 has a respective receiving space 112, 114 on a coupling portion of the coil spring 172. At least part of the last end turns of the coil spring 172 are received in a respective one of the receiving spaces 112, 114.

In the mechanism according to Fig. 1 the actuator 174 is transferable between a first pivot position and a second pivot position. A user engages to transfer the actuator 174 between the in Fig. 1 shown first pivoted position, ie a locked position on the body 1502, and a not shown unlocked position of the flap 100 on a handle 114 of the actuating element 174, to the latter according to Fig. 1 to pull out of the image plane and to fold over a pivot axis 116 (for example, a film hinge). The Übertragungsabgleitschrägflächen 160, 162 then slide flat along the Angriffsggleitschrägflächen 190, 192, wherein the latch body 152, 154 are approached and the lock is disabled.

In particular, due to the geometry of the planes of the attack sliding bevels 160, 162 and the Übertragungsabgleitschrägflächen 190, 192 can be achieved with a short stroke, ie a pivoting movement of the actuator 174 by a short path, a strong compression of the coil spring 172 and thus a strong Aufeinanderzubewegen the opposite locking lugs 156, 158. To the flap assembly 130 from the in Fig. 1 shown to lock in the locking grooves of the body 1502 locked state in the unlocked state, a one-hand executable short release movement is sufficient.

As in Fig. 1 shown, the actuator 174 in the first pivotal position with the flap 100 (and also with the body) is arranged flush final.

In each of the locking bodies 152, 154, the associated detent lug 156, 158 is rigidly connected to the opposing engagement section 168, 170. Each lock body 152, 154 may be made in one piece, for example of plastic material. Similarly, in the actuator 174, the transmission sections 176, 178 are rigidly connected to each other, the plate 177 causes this rigid connection. One from the drawing level according to Fig. 1 Handle portion 114 growing out of the plate 177 may be gripped by a user to actuate the actuator 174 and translate from the first pivot position to the second pivot position.

Another body of the mechanism 150 is a support body 120, on which the first locking body 152 and the second locking body 154 are each mounted longitudinally displaceable. This longitudinally displaceable mounting takes place in the direction of the biasing axis 180. Apart from a mobility along the biasing axis 180, the locking bodies 152, 154 are mounted immovably on the support body 120. The actuator 174 is pivotally mounted relative to the support body 120. For this purpose, a pivot bearing 116 is provided, on which the actuating element 174 on the support body 120 pivotally is appropriate. A beyond longitudinal movement or pivotal movement of the actuating element 174 about another axis is impossible.

The support body 120 has a number of spring hooks 122, which are raised relative to the plate-like basic structure of the support body 120 and are resilient strip areas. With these spring hooks 122, the support body 120 and thus the bolt body 152, 154 and the fastening element 174 attached thereto can be fastened to the flap 100. The attachment structures are formed on opposite major surfaces of the support body 120, i. on the front surface and on the rear surface thereof, so that the support body 120 can be fixed between two opposing surfaces of the flap 100 and thus can be partially received in the flap 100. As a result, the mechanism 150 is protected from undesired damage to the moving parts due to external influences.

As a result of equipping the Abgleitschrägflächen 160, 162 of the engaging portions 168, 170 with a tilt by exactly two tilt axes and tilting of Abgleitschrägflächen 190, 192 of the transmission sections 176, 178 to exactly one tilt axis can be ensured that during a pivoting movement, the actuator 174 a power transmission along the abutting plane (instead of point or line) sliding Abgleitschrägflächenpaaren 160 and 190 or 162 and 192 takes place so that during the sliding surface contact takes place instead of a point or line contact. As a result, the frictional force occurring between the sliding and rubbing Gleitleitschrägflächenpaaren 160 and 190 or 162 and 192 can be distributed over the surface, whereby the components 152, 154, 174 formed of plastic material are exposed to only a very small wear.

Fig. 2 shows an enlarged range of Fig. 1 and highlights in particular the planes of the various beveled surfaces 160, 162, 190, 192, the biasing or force transmission direction 180 together with the associated normal plane 182 and the axes of rotation 184, 186 and 198, 148.

Fig. 3 Figure 3 shows in a schematic spatial view 350 the normal plane 182 to the biasing direction 180. It is further shown that in this embodiment the engagement sliding ramps 190, 192 are rotated through a 25 ° rotation about a first axis of rotation 184 and through a 20 ° rotation about one orthogonal, second axis of rotation 186 from the normal plane 182 can be geometrically constructed. Furthermore, in Fig. 3 schematically represented by reference numerals 198, 148, that by rotating about a single axis of rotation 198, 148, each of the transfer slide-off slopes 160, 162 can be generated out of the normal plane 182. This is particularly in a schematic detail view 300 in FIG Fig. 3 shown.

4 and FIG. 5 show the flap assembly 130 in a complete spatial view from the perspective of the receiving container interior ( Fig. 4 ) or from the receptacle exterior ( Fig. 5 ). The flap 100 is provided in the region of its lower edge on both sides each with a bearing journal 400 which engages in a bearing opening, not shown, on the side wall of the body. The flap 100 has an outer front wall 402, which together with the body forms an outer surface of the storage box. In addition, the flap 100 has two lateral tabs 404, with which the flap 100 can be placed slightly in front of the side walls of the receptacle. The tabs 404 have the shape of circular sectors, which extend over an angle of slightly less than 90 °. Radial ribs 406 reinforce tab 404.

When the flap 100 is folded out relative to the body of the storage box, can be filled out of the Storage box can be removed. Due to the tabs 404 lateral leakage of the contents can be prevented.

Furthermore, in particular in Fig. 4 shown that an upper end of the flap 100 and an upper end of the mechanism 150 flush with each other. When the flap assembly 130 is mounted to a body of a storage box, an upper edge 444 of the flap assembly 100 also terminates with a corresponding upper edge of the body. As a result, a plurality of similar storage boxes can be stacked on top of each other, without restricting the free accessibility of the receiving container interior, since the locking and unlocking mechanism 150 and the operation of the flap 100 is not affected by stacking a plurality of storage boxes.

FIGS. 6, 7 and 8 show different views of the mechanism 150.

Fig. 9 shows an enlarged arrangement of the two locking bodies 152, 154, which are coupled by means of the coil spring 172.

Fig. 10 shows an arrangement of the actuating element 174 and the support body 120, on which the actuating element 174 is mounted rotatably.

In Fig. 11 shown again, the flap assembly 130, which is formed from the mechanism 150 and the flap 100.

Fig. 12 shows the flap assembly 130 without the mechanism 150.

Fig. 13 shows a larger view of the first latch body 152. Fig. 14 shows an enlarged view of the second locking body 154, which may be formed with respect to the first locking body 152 as a mirror-symmetrical structure.

Fig. 15 shows a storage box 1500 with an open flap 100 according to an exemplary embodiment of the invention. Fig. 16 shows the storage box 1500 with the flap 100 closed. Fig. 17 shows the storage box 1500 partly without flap 100, so that the mechanism 150 and its components are more visible.

The storage box 1500 is used to store receiving material (such as piece or bulk material) and has a substantially cuboidal body 1502, which limits in the closed state of the flap 100 together with this a receiving volume for receiving the receiving material. Referring to Fig. 1 to Fig. 14 lockable flap assembly 130 for selective locking or unlocking relative to the body 1502 is pivotally mounted to the body 1502. Inside the storage box 1500, fasteners are abutted, on which locking grooves 1504 are formed, which are adapted to engage with the detents 156, 158 when the flap 100 is in the receiving space occluding state and the mechanism 150 is in the locked state to the body 1502 is.

The flap 100 and the mechanism 150 are adapted to each other in such a way that starting from a locked state (see Fig. 16 ), the actuator 174 for transferring the flap assembly 130 is to swing into an unlocked state and subsequently the flap 100 is folded forward to make the receiving volume of the storage box 1500 through the flap 100 therethrough accessible (see Fig. 15 ). Starting from the unlocked state (see Fig. 15 ), it is sufficient to fold back only the flap 100 (ie to fold the body 1502) to close the receiving volume through the flap 100, whereby automatically by means of the biased coil spring 172, ie without a user for this must be active again, the actuator 174 swivels back to the locked state for transferring the flap assembly 130. Illustratively, after folding back the flap 100, the user only has to let go of the actuating element 174, which, due to the spiral spring 172 still tensioned as a result of the previous operation, causes the Actuator 174 folds back and retract the latch body 152, 154 in the locking grooves 1504.

The flap assembly 130 is further mounted to the body 1502, and the body 1502 has an open top formed therein and a closed bottom formed such that in the stacked state of a plurality of similar storage boxes 1500 one above the other, the flap 100 can be folded against both the body 1502 and can be folded away from the body 1502. This is made possible by the substantially flush closing of the body 1502, flap 100 and actuator 174 at the top 444.

In addition, it should be understood that "no other elements or steps are excluded and" a "or" an "are not meant to exclude a plurality." Further, it should be understood that features or steps described with reference to any of the above embodiments are also incorporated in Combination with other features or steps of other embodiments described above may be used, and reference signs in the claims are not intended to be limiting.

Claims (15)

1. A mechanism (150) that can be mounted on a door (100) for purposes of locking or unlocking the door (100) with respect to a carcass (1502) of a storage box (1500), wherein
   the mechanism (150) has:

   two locking bodies (152, 154), which have in each case an engagement section (156, 158) for purposes of engaging in each case with a co-operating counterpart engagement section (1504) of the carcass (1502), and a contact section (168, 170) having an oblique sliding surface (160, 162) for purposes of executing an actuation force;

   a preload device (172), which is equipped for purposes of generating a preload force acting along a preload axis (180), so as to push the engagement sections (156, 158) against the counterpart engagement sections (1504) in order to lock the door (100) with respect to the carcass (1502);

   an actuation element (174) that can be actuated by a user, which has two transmission sections (176, 178), each having an oblique sliding surface (190, 192) for purposes of transmitting the actuation force onto one of the respective contact sections (168, 170); wherein

   the oblique sliding surfaces (160, 162, 190, 192) of the transmission sections (176, 178) and the contact sections (168, 170) are co-operatively designed so as to slide past one another in a force-transmitting manner during the transmission of the actuation force.

   characterised in that,

   the preload device (172) is arranged between the locking bodies (152, 154), and in that,

   the oblique sliding surfaces (160, 162) of the contact sections (168, 170) are each located in a plane, which relative to a plane (182) normal to the preload axis (180) is tilted about two different axes of tilt (184, 186) .
2. The mechanism (150) in accordance with claim 1, having at least one of the following features:

   the oblique sliding surfaces (190, 192) of the transmission sections (176, 178) are arranged on inner surfaces, facing towards one another, of the transmission sections (176, 178);

   in the direction towards the free ends (104, 106) of the transmission sections (176, 178) the oblique sliding surfaces (190, 192) of the latter run apart;

   in a locked state of the mechanism (150) the oblique sliding surfaces (190, 192) of the transmission sections (176, 178) are each located in a plane, which relative to the plane (182) normal to the preload axis (180) is tilted along exactly one axis of tilt (198, 148), wherein in particular the respective axis of tilt (198, 148) of the oblique sliding surfaces (190, 192) of the transmission sections (176, 178) runs at right angles to the preload axis (180);

   the two axes of tilt (184, 186), which are assigned to the plane of the oblique sliding surfaces (160, 162) of the contact sections (168, 170), are located in the normal plane (182);

   the two axes of tilt (184, 186), which are assigned to the plane of the oblique sliding surfaces (160, 162) of the contact sections (168, 170), run at right angles to one another; wherein in particular the plane of the oblique sliding surfaces (160, 162) of the contact sections (168, 170), is defined by two tilting events about the two axes of tilt (184, 186), to which tilting events in each case a tilt angle of between 5° and 50°, in particular between 15° and 40°, is assigned;

   the oblique sliding surfaces (160, 162) of the contact sections (168, 170) are arranged on outer surfaces, facing away from one another, of the contact sections (168, 170) ;

   in the direction towards the free ends (194, 196) of the contact sections (168, 170) their oblique sliding surfaces (160, 162) run together;

   the locking bodies (152, 154) have as an engagement section a respective latching catch (156, 158) for purposes of engagement in a respective latching groove (1504) as a counterpart engagement section of the carcass (1502).
3. The mechanism (150) in accordance with one of the claims 1 to 2, wherein the preload device is designed as a compression spring (172), the end sections of which are connected to the locking bodies (152, 154), and which presses the locking bodies (152, 154) against the counterpart engagement sections (1504).
4. The mechanism (150) in accordance with claim 3, wherein each of the locking bodies (152, 154) has a pin (108, 110), which engages with the respective end section of the compression spring (172) in a guiding manner.
5. The mechanism (150) in accordance with claim 3 or 4, wherein each of the locking bodies (152, 154) has a reception space (112, 114), which receives the respective end section of the compression spring (172).
6. The mechanism (150) in accordance with one of the claims 1 to 5, wherein the actuation element (174) is mounted such that it can pivot between a first pivotal position and a second pivotal position, wherein the oblique sliding surfaces (160, 162, 190, 192) of the transmission sections (176, 178) and the contact sections (168, 170) assume different relative orientations in the first pivotal position and in the second pivotal position, such that the distance maintained by the preload device (172) between the engagement sections (156, 158) in the first pivotal position is greater than in the second pivotal position.
7. The mechanism (150) in accordance with claim 6, wherein the mechanism (150) is designed such that it can be mounted on the carcass (1502), such that in the first pivotal position the actuation element (174) closes flush with the door (100) and with the carcass (1502).
8. The mechanism (150) in accordance with claim 6 or 7, wherein the oblique sliding surfaces (160, 162) of the contact sections (168, 170) are tilted about the two axes of tilt (184, 186) such that during the translation from the first pivotal position into the second pivotal position the oblique sliding surfaces (190, 192) of the transmission sections (176, 178) in the first pivotal position initially cover adjacent areas of the oblique sliding surfaces (160, 162) of the contact sections (168, 170) that are spatially nearer, and subsequently cover areas of the oblique sliding surfaces (160, 162) of the contact sections (168, 170) that in the first pivotal position are spatially spaced further apart from one another.
9. The mechanism (150) in accordance with claims 3 and 6, wherein the mechanism (150) is designed such that the compression spring (172) is compressed by means of pivoting the actuation element (174) from the first pivotal position into the second pivotal position.
10. The mechanism (150) in accordance with one of the claims 1 to 9, having at least one of the following features:

    the actuation element (174) has a handle (114), wherein the handle (114) and the transmission sections (176, 178) are arranged on opposite sides with respect to a pivotal bearing (116), in particular designed as a film hinge of the actuation element (174), wherein the actuation element (174) is designed such that it can pivot about the pivotal bearing (116);

    in each of the locking bodies (152, 154) the engagement section (156, 158) is rigidly connected with the contact section (168, 170);

    in the actuation element (174) the transmission sections (176, 178) are rigidly connected with one another;

    the mechanism has a supporting body (120), on which are mounted the locking bodies (152, 154) such that they can move longitudinally, and on which the actuation element (174) is mounted such that it can pivot, wherein in particular the supporting body (120) has attachment structures (122), in particular, spring hooks, for purposes of attaching the mechanism (150) onto the door (100), wherein furthermore, the attachment structures (122) are in particular arranged on opposing surfaces of the supporting body (120), so as to attach the supporting body (120 between opposing surfaces of the door (100).
11. A lockable and unlockable door arrangement (130) for purposes of selective locking or unlocking with respect to a carcass (1502) of a storage box (1500), wherein the door arrangement (130) has:

    a door (100), which selectively folds against the carcass (1502) and can be locked onto the latter, or unfolds from the carcass (1502) and can be unlocked from the latter;

    a mechanism (150) in accordance with one of the claims 1 to 10, mounted on the door (100) for purposes of selective locking or unlocking of the door (100) with respect to the carcass (1502).
12. The door arrangement (130) in accordance with claim 11, wherein the door (100) and the mechanism (150) are designed such that:

    starting from a locked state, the actuation element (174) is pivoted so as to translate the door arrangement (130) into an unlocked state, and subsequently the door (100) is folded forward so as to provide access to a reception volume of the storage box (1500);

    starting from the unlocked state, only the door (100) is to be folded back, so as to close the reception volume, as a result of which, by means of the preloaded preload device (172) the actuation element (174) automatically pivots back, so as to translate the door arrangement (130) into the unlocked state with the removal of load from the preload device (172).
13. The storage box (1500) for purposes of storing goods to be received, wherein the storage box (1500) has:

    a carcass (1502), which at least partially bounds a reception volume for purposes of accommodating the goods to be received;

    a lockable door arrangement (130) in accordance with claim 11 or 12, for purposes of selective locking or unlocking of the door (100) with respect to the carcass (1502).
14. The storage box (1500) in accordance with claim 13, wherein the door arrangement (130) is mounted on the carcass (1502) and the carcass (1502) is designed to have an open upper face together with a closed floor, such that in the stacked state of a plurality of storage boxes of the same type the door (100), can be folded against the carcass (1502), and can also be folded away from the carcass (1502).
15. A method for purposes of manipulating a door arrangement (130) on a carcass (1502) of a storage box (1500), wherein the method has: formation of an engagement, in each case between an engagement section (156, 158) of two locking bodies (152, 154) of the door arrangement (130) and, and a co-operating counterpart engagement section of the carcass (1502), for purposes of locking the door arrangement (130) on the carcass (1502), wherein a preload device (172) of the door arrangement (130) generates a preload acting along a preload axis (180) between the locking bodies (152, 154) so as to push the engagement sections (156, 158) against the counterpart engagement sections;
    actuation of an actuation element (174), as a result of which two transmission sections (176, 178) of the actuation element (174), each transmission section having one oblique sliding surface (190, 192), transmit an actuation force onto one of two respective contact sections (168, 170) of the locking bodies (152, 154), each contact section having one oblique sliding surface (160, 162), such that when the actuation force is being transmitted the oblique sliding surfaces (190, 192) of the transmission sections (176, 178) and the contact sections (168, 170) slide past one another with the transmission of force, as a result of which the engagement sections (156, 158) and the counterpart engagement sections are brought out of engagement so as to unlock the door arrangement from the carcass (1502); wherein
    the oblique sliding surfaces (160, 162) of the contact sections (168, 170) are in each case located in a plane, which relative to a plane (182) normal to the preload axis (180) is tilted about two different axes of tilt (184, 186).

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