Device for ejecting objects

Abstract

A device for ejecting objects (1) comprises an outer sleeve (21) and an ejector (4). The ejector is movable inside the outer sleeve along an axial direction. An intermediate base (22), together with the outer sleeve, forms a base (2) of the device for ejecting objects. An elastically preloadable element (5) is arranged between the ejector (4) and the intermediate base (22). The ejector has a detent element (42), and the base has a detent receptacle (224), which are configured and arranged to form a positive-locking connection that blocks movement of the ejector away from the intermediate base. The elastically preloadable element (5) is dimensioned such that, when the detent element (42) is engaged with the detent receptacle (224), it is under preload and exerts a force on the ejector (4) directed in an ejection direction (7).A release element (6) is configured to release the positive locking between the latching element and the latching receptacle.

Description

TECHNICAL AREA

[0001] The present description relates to a device for ejecting objects of the type characterized in the claims. TECHNOLOGICAL BACKGROUND

[0002] So-called party poppers are popular party items. They consist of a usually cylindrical container filled with items such as confetti or glitter. By igniting a low-powered pyrotechnic charge, these items are ejected from the container as a party effect. It is also known to use the stored energy of a compressed gas to eject the items. In this way, it is also possible to present gifts by ejecting them from a party popper as a surprise effect.

[0003] However, the ignition of the pyrotechnic charge or the destruction of a gas reservoir to quickly release the stored energy destroys the party popper, making it a disposable item that must then be discarded. This is incompatible with any concept of sustainability. Furthermore, even small pyrotechnic charges or compressed gases stored in chambers that must be easily destroyed for the party popper to function always pose latent safety risks. Therefore, they are unsuitable, or only conditionally suitable, for use by children, who, however, particularly enjoy such party poppers.

[0004] Table bombs are known that eject objects using an ejector actuated by pre-tensioned elastic elements. These are generally reusable.

[0005] According to WO 2019 / 028741, pressing down an ejector in an outer casing pre-tensions a spring. The ejector can be fixed in the pre-tensioned spring position by means of a pin. Pulling the pin releases the ejector, which is then set in motion by the stored energy of the tensioned spring, ejecting any objects mounted on the ejector. For reuse, the ejector must be held against the spring force while the pin is inserted. This complicates the preparation of the described item for reuse and requires two hands. Furthermore, the described item appears unsuitable, or only conditionally suitable, for one-handed operation.

[0006] According to the teaching of JP 3218636 U, the ejector of the ejection mechanism comprises two radially projecting tongues that are guided in axial grooves in the outer shell in which the ejector runs. Pressing down on the ejector compresses a spring. At a lower end position, the grooves of the outer shell have circumferential extensions. By rotating the ejector, the tongues engage in these extensions, thus securing the ejector in the position with the compressed spring. By rotating the ejector in the opposite direction, the tongues are brought back into alignment with the axial grooves, whereupon the energy stored in the spring can be released.

[0007] According to the teaching of DE 27 12 754 A1, a spring-operated table bomb comprises a sleeve in which an insert cup is axially movably guided. A table bomb base with a central opening is arranged within the sleeve. It is provided that when the insert cup is pressed downwards, a spring is tensioned, whereby a pin from the underside of the insert cup penetrates the opening of the table bomb base and protrudes from the underside of the base. There is a notch in the pin. A lug of a release lever is clamped in this notch and is held in a self-locking position by the spring tension between the notch of the pin and the underside of the base. The lever is loosely inserted and does not include any bearing via a pivot axis or the like.

[0008] Further examples of devices for ejecting objects, or table bombs, in which the ejection of the contents is effected by the energy of a pre-tensioned spring, can be found in CN 216149046 U and US 6,572,435.

[0009] In line with the concept of sustainability, an object of the type mentioned in the introduction is desirable in which, after use, the spring can be easily and simply re-tensioned and the ejector can be held in the position with the tensioned spring and, if necessary, secured. DESCRIPTION OF THE SUBJECT OF THE PRESENT DESCRIPTION

[0010] The present description describes a device for ejecting objects of the type mentioned in the introduction, particularly for use as a party item. The device is intended to be reusable. According to more specific requirements, both triggering the device for ejecting objects and preparing it for reuse should be possible with simple steps and, ideally, with one-handed operation.

[0011] This is achieved by means of the items characterized in claim 1 or some of the dependent claims.

[0012] Further effects and benefits of the items described here, whether explicitly stated or not, will become apparent in light of the present description.

[0013] Disclosed is a device for ejecting objects, comprising an outer sleeve and an ejector. The ejector is arranged in the outer sleeve and is guided radially within the outer sleeve and movable along an axial direction. An intermediate base is arranged in the outer sleeve, which, together with the outer sleeve, forms a base for the object ejection device. The intermediate base need not necessarily be a flat surface, but can also be lattice-like, strut-like, spoke-like, and so on. An elastically preloadable element, for example, a spring, is arranged in the axial direction between the ejector and the intermediate base. The elastically preloadable element is thus supported on the intermediate base and the ejector. The elastically preloadable element can, for example, be a coil spring. The ejector has a detent element. The base has a detent receptacle.The locking element and the locking receptacle are configured and arranged to form a positive-locking connection that blocks movement of the ejector away from the intermediate floor. It should be readily apparent that this implies, firstly, that the locking element and the locking receptacle overlap at least partially in the radial direction, and secondly, that the possible range of motion of the ejector in the base is sufficiently large to bring the locking element and the locking receptacle into a positive-locking engagement. For example, it is provided that the locking element and the locking receptacle can engage in a rear-locking engagement. The elastically preloadable element is dimensioned and arranged such that, when the locking element and the locking receptacle are positively locked, it is under preload and exerts a force, particularly axial, on the ejector in an ejection direction.For example, a helical spring can be under compressive preload. A release element is configured to release the positive locking between the detent element and the detent receptacle. This can be achieved, in particular, by displacement and / or deformation of the detent element and / or the detent receptacle against an elastic restoring force. Furthermore, the detent element and the detent receptacle are designed such that the detent element and the detent receptacle form a one-sided locking or blocking anti-return mechanism in the ejection direction. This implies that the detent element and the detent receptacle are designed and arranged such that, when the detent element moves relative to the detent receptacle against the ejection direction, they slide past each other. This, too, can be achieved by displacement and / or deformation of the detent element and / or the detent receptacle against an elastic restoring force.The locking element and the locking receptacle together form a one-way locking mechanism, similar to a freewheel or the toothing of a cable tie. Such arrangements are sufficiently familiar to those skilled in the art.

[0014] This design allows the ejector to be moved within the outer sleeve against the ejection direction towards the intermediate shelf, thus tensioning the elastically pre-tensioned element, with the locking element sliding past the locking receptacle. The locking element is configured and positioned to form a positive-locking connection with a locking receptacle on the base, which is configured to block movement of the ejector away from the intermediate shelf. Accordingly, after sliding past the locking receptacle, the locking element automatically engages with it. This allows for easy, one-handed tensioning of the elastically pre-tensioned element when the base is supported against a solid surface.

[0015] Furthermore, as shown in more detail below, it can be provided that all locking elements are arranged inside the outer sleeve, so that there is no risk of injury, for example from fingers being pinched between the locking element and the locking receptacle.

[0016] On the side of the ejector that points in the ejection direction, objects can be arranged which, upon release of the elastically prestressable element in the tensioned element, are ejected from the device for ejecting objects by an acceleration of the ejector along the ejection direction.

[0017] “Ein” or “eine” are to be understood as indefinite articles and not as numerals within the context of this description, unless another meaning is explicitly indicated, for example by the use of “genau ein” or “genau eine”.

[0018] The ejector may be designed to include a pin extending from a fixed end of the pin to a free end, opposite to the ejection direction, with the locking element positioned laterally on the pin at a distance from the fixed end. Radial displacement of the locking element then results, for example, from elastic bending or tilting of the pin when a lateral, radially acting force is applied at a distance from the fixed end of the pin.

[0019] In certain embodiments of the claimed object, the locking receptacle is provided or arranged on the intermediate floor. The intermediate floor may have an opening, and the locking receptacle is formed or arranged at the edge of the opening. In further, more specific embodiments, the opening includes a guide funnel that tapers in the opposite direction to the ejection direction. This facilitates, for example, inserting a pin of the ejector from the ejector into the opening in the opposite direction to the ejection direction and at least partially passing through the opening. This is further facilitated because the pin is guided into the opening by the guide funnel during its movement.

[0020] It can be provided that at least the free end of the ejector pin, up to and including the locking element, can be guided through the opening from an upper surface of the intermediate shelf facing the ejector to an underside of the intermediate shelf facing away from the ejector, and that the locking element can be brought into a rear grip with the underside of the intermediate shelf. In particular, it can be provided that the locking element, when projected onto the intermediate shelf along the axial direction, lies outside the opening of the intermediate shelf at its smallest cross-section. For example, when the locking element is guided through the opening, it is laterally displaced in contact with the edge of the opening so that it can be guided through the opening. An elastic restoring force builds up during this process. For example, the pin on which the locking element is arranged bends, and / or it is tilted on its base.After the locking element has been passed through the opening, the locking element is brought into the rear grip with the underside of the intermediate floor by the built-up elastic restoring force, or locks into the intermediate floor or the locking receptacle, thus establishing the positive locking action acting on one side in the ejection direction with the locking receptacle provided by the intermediate floor.

[0021] It can also be provided that the opening and the pin are designed asymmetrically in the circumferential direction, such that the pin can be inserted into the opening in exactly one circumferential orientation and that its distal end and the locking element can be guided through the opening. This ensures that the locking element is always in the correct position and orientation relative to the release element.

[0022] The locking element can include a locking tooth that engages on one side. This tooth has a first flank, a second flank, and a crest located axially between the first and second flanks. Viewed from the crest, the first flank faces away from the bottom of the ejector, opposite to the ejection direction, and the second flank faces towards the bottom of the ejector, in the ejection direction. The first flank is designed as a ramp-up flank, rising in an axial direction in the ejection direction, and the second flank is a locking flank. These flanks are designed such that the locking element, with its ramp-up flank rising towards the crest, can slide past a counterpart, whereby, due to the ramp-like design, the locking element and / or the counterpart are deflected perpendicular to the direction of movement.The locking flank, on the other hand, is steeply angled against the axial direction such that it blocks movement when axially impacting a counterpart. For example, the angle formed by the approach flank with the axial direction, pointing away from the bottom of the ejector, from the apex, is 45° or less, in particular 30° or less. An angle formed by the approach flank with the axial direction, pointing towards the bottom of the ejector, from the apex, is, for example, 45° or more, in particular 60° or more, and furthermore, in particular at least approximately 90°, for example 85° or more.

[0023] In embodiments of the described object, it may be provided that the locking element is arranged on the ejector in such a way that, when the locking element is in positive engagement with the locking receptacle, it is held in positive engagement with the locking receptacle by an elastic restoring force and the release element is configured to move the locking element against the elastic restoring force out of positive engagement with the locking receptacle.

[0024] The release element can be a lever that is movably mounted within the outer sleeve, particularly on a side of the intermediate base opposite the ejection direction, about a fixed axis of rotation relative to the outer sleeve. That is, the lever is rotatable or pivotable about the axis of rotation, whereby the range of rotation or pivoting movement can be limited to a minimum dimension necessary for its function as a release element. The lever is particularly located on the side of the intermediate base opposite the ejection direction. A proximal end of the lever can be actuated from outside the outer sleeve, particularly through a lateral opening in the outer sleeve. A distal end of the lever is arranged such that a rotation of the lever about the axis of rotation is configured to release the positive locking between the detent element and the detent receptacle.In particular, it can be provided that when the proximal end of the lever is actuated by a rotational or pivoting movement about the axis of rotation, the distal end of the lever acts on the detent element to move the detent element against an elastic restoring force resulting from the positive locking with the detent receptacle. Subsequently, the energy stored in the pre-tensioned, elastically pre-tensionable element is released, the ejector is accelerated along the ejection direction, and objects arranged on the ejector are abruptly ejected from the object ejection device.

[0025] The specific embodiments mentioned above can be combined with one another. Further embodiments of the teaching of this document, not specifically disclosed, are readily apparent to the person skilled in the art. BRIEF DESCRIPTION OF THE FIGURES

[0026] The facts presented here will be explained in more detail below using selected examples shown in the drawing. Specifically, we will show... Fig. 1 a longitudinal section through an example of a device for ejecting objects of the type described herein; Fig. 2 the ejector pin of the in Fig. 1. Exemplary device shown with the locking element arranged on it; Fig. 3 Details of a locking element arranged on a pin; Fig. 4 the in the Fig. 3. The object shown is depicted in a different view; Fig. 5 a view of the intermediate floor of the exemplary device made of Fig. 1; Fig. 6 the intermediate floor Fig. 5 in a perspective view; Fig. 7 the intermediate floor Fig. 5 in a different perspective view; Fig. 8 a longitudinal section through a part of the in Fig. 1. Exemplary device shown in another longitudinal section plane; and Fig. 9 a detailed view of the release lever of the exemplary device from Fig. 1.

[0027] The drawings may be schematic. Details not necessary for understanding the described items may be omitted. Furthermore, the drawings only show selected embodiments and must not be used to limit the scope of the items described in the claims. Embodiments not shown may well be covered by the claims. EXAMPLES OF EXECUTION

[0028] Fig. Figure 1 illustrates an exemplary embodiment of a device for ejecting objects 1. This device comprises an outer sleeve 21 and an ejector 4. The ejector includes a piston 49 with a lateral skirt to improve guidance within the outer sleeve and to minimize the risk of the ejector becoming jammed within the outer sleeve. Furthermore, an intermediate base 22 is arranged within the outer sleeve 21 and attached to the outer sleeve. This intermediate base 22 is also provided with a lateral skirt, which particularly simplifies assembly. The outer sleeve 21 and the intermediate base 22 together form a base 2 of the device for ejecting objects 1. The ejector 4 is guided radially in the outer sleeve and is movable in the axial direction relative to the base. A pin 43 extends from a base 41 of the ejector towards the intermediate base., in the configuration shown, partially through an opening in the intermediate floor 22, which is explained in more detail below. With reference to the . Fig. 2 and Fig. 3 The pin extends from a fixed end 431 at the base 41 of the ejector to a free end 432. The pin extends in the direction from the fixed end 431 to the free end 432, further opposing an ejection direction 7. The ejector 4 has a detent element 42, which in the illustrated embodiment is arranged or formed on the pin 43. The detent element is adjacent to a free end 432 of the pin and thus spaced apart from the fixed end 431 of the pin. A force acting laterally on the detent element 42 therefore results in a bending or tilting moment on the pin 43. Through elastic deformation and / or tilting of the pin, the detent element 42 is moved laterally or radially, whereby an elastic restoring force acts on the detent element 42.Base 2 further features a detent, wherein the detent element 42 and the detent are configured to form a positive-locking connection that blocks movement of the ejector 4 away from the intermediate floor 22. The detent is formed at the edge of the opening of the intermediate floor 22, as described in more detail below.

[0029] Referring to Fig. 5 shows the opening 221 of the intermediate floor 22, through which the in Fig. The configuration of the pins 43 shown in Figure 1 extends. The detent receptacle 224 is formed at the edge of the opening. Fig. Figure 3 shows an area adjacent to the free end 432 of the pin. The pin 43 tapers towards the free end 432 to allow it to move easily in a direction opposite to the ejection direction 7 through the opening 221 of the intermediate floor 22. This is supported by the guide funnel 222 of the opening, which tapers opposite to the ejection direction 7 and thus guides the pin towards the opening 221 when it moves against the ejection direction. Again with reference to the Fig. Figure 3 shows the locking element 42 as a one-sided locking tooth, as known, for example, from backstops, cable ties, etc. This tooth has two flanks 421 and 422, and an intermediate apex 423. A first flank 421, which is arranged from the apex 423 towards the free end of the pin or opposite to the ejection direction 7, is designed as a ramp-up flank, which rises ramp-like in the axial direction towards the apex 423. The ramp-up flank forms an angle α with an imaginary line 11 extending across the apex, which is parallel to the axial direction of the device for ejecting objects. This angle α is less than 45° and, in particular, less than 30°.Thus, when the approach flank 421 moves against the ejection direction 7 relative to a counterpart, the locking element and / or the counterpart can deflect laterally, and the locking element can slide past the counterpart. In contrast, a second flank 422, which is arranged from the apex 423 towards the fixed end of the pin or in the ejection direction 7, is designed as a locking flank suitable for blocking or locking the movement relative to a counterpart. The locking flank forms an angle β with an imaginary line 11 extending over the apex 423, parallel to the axial direction of the ejection device, which is greater than 45° and, in particular, greater than 60°. In the example shown, this angle is greater than 90°.

[0030] The following explanation requires a review of the Fig. 1, Fig. 3 and Fig. 5. When the ejector 4 is moved within the outer sleeve 21 in the opposite direction to the ejection direction 7, a spring 5, which is arranged as an elastically preloadable element between the intermediate base 22 and the ejector 4, is preloaded. In this process, the free end 432 of the pin 43 moves towards the intermediate base 22 and is finally guided through the guide funnel 222 into the opening 221. The leading edge 421 of the locking element 42 then comes into contact with a side wall of the guide funnel 222 and slides past it and the locking receptacle 224. A laterally acting force is exerted on the pin 43, causing the locking element 42 to be deflected laterally and finally slide past the locking receptacle 224 through the opening 221. As soon as the apex 423 of the locking element 42 has passed the locking receptacle 224, the elastic restoring force of the pin brings the locking element 42 into engagement with the locking receptacle.A positive fit is established between the locking element 42 and the locking receptacle 224. Since the locking receptacle 224 and the locking flank 422 of the locking element 42 now interact, movement of the ejector in the ejection direction is blocked. The locking element 42 and the locking receptacle 224 therefore form a one-sided anti-return mechanism that blocks movement in the ejection direction. The spring 5 is dimensioned such that it is under compressive preload when the locking element is engaged with the locking receptacle. The spring then exerts a force acting in the ejection direction 7 on the ejector 4, whereby the ejector is secured against movement in the ejection direction by the locking mechanism consisting of the locking element 42 and the locking receptacle 224.

[0031] Items such as glitter flakes 8 and the like can now be placed into the outer sleeve. The outer sleeve can be closed by means of a lid 3. The ejection device is now cocked and loaded, with the lid 3 preventing loaded items from falling out of the ejection device as long as it is in place. On the side of the intermediate base 22 opposite the ejector 4, a release lever 6 is arranged as a release element for the ejection device. As described in more detail below, the release lever 6 is rotatably mounted relative to the base 2. A proximal end of the lever is accessible through a lateral opening 211 in the base 2.By pressing an actuating button 62 located at the proximal end of the release lever 6, the release lever 6 rotates clockwise in the illustrated view, and a distal end of the release lever 6 exerts a force on the detent element 42, which moves the detent element 42 out of the rear grip with the detent receptacle. In this way, the release element or release lever 6 is arranged and configured to release the positive locking between the detent element and the detent receptacle. This releases the movement of the ejector 4 in the outer sleeve 21, and the spring force of the pre-tensioned spring 5 accelerates the ejector in the ejection direction. With the cover 3 removed, the objects 8 are ejected from the object ejection device, thus achieving a table bomb effect without the use of pyrotechnics.In the manner described above, the object ejection device can be prepared for reuse by simply pressing the ejector in the opposite direction of ejection and inserting new objects 8. When the ejector is pressed in the opposite direction, the spring 5 is re-tensioned, and the locking mechanism, or the one-sided locking backstop formed by the locking element 42 and the locking receptacle 224, engages automatically, securing the ejector 4 in the position with the tensioned spring. As explained in more detail below, a safety device is provided which, for example, prevents accidental activation during transport of the object ejection device.

[0032] In the Fig. 2 and Fig. Section 4 describes in more detail the pin 43 of the ejector 4, which extends from a plate 41 of the ejector 4. The pin extends from a fixed end 431 on the plate 41 to a free end 432 in the installed state, opposite to the ejection direction. The free end 432 of the pin tapers. The advantageous effects of this design are described above. Adjacent to the free end 432 of the pin is the locking element 42, whose leading edge 421 faces the free end 432 of the pin, i.e., opposite to the ejection direction, while the locking edge 422 faces the fixed end of the pin, i.e., in the ejection direction. This allows the locking element 42, as shown above, to first slide past the locking receptacle when the ejector 4 moves against the ejection direction and then automatically engage with the locking receptacle in a positive-locking connection and engage.

[0033] Axial ribs are distributed around the circumference of the pin. Rib 433 extends further towards the free end of the pin than the other ribs. Referring to the Fig. 5 and Fig. 6 A guide groove 223 is formed inside the guide funnel 222, which is designed to receive the portion of the rib 433 that extends axially towards the free end 432 of the pin 43. This ensures that the pin 43 of the ejector can only be inserted into the opening of the intermediate floor in exactly one circumferential orientation to such an extent that the locking element 42 forms a positive fit with the locking receptacle 224. This also ensures that the locking element 42 is arranged in a defined circumferential position, such that it can engage with the locking receptacle 224 and points towards the distal end of the release lever, so that the distal end of the release lever can act on the locking element when the release lever is actuated.A visible marking can be arranged on the side of the ejector opposite the pin, making it easier to identify the orientation of the pin 43 with the locking element 42 from this accessible side. The pin 43 is not visible when the device for ejecting objects is assembled. Additionally, a marking can also be arranged at a circumferential position inside the outer sleeve to facilitate positioning the ejector 4 in the correct circumferential orientation.

[0034] In the Fig. 5 and Fig. Figure 7 shows tabs 225 and 225a, which, in the assembled state, extend on the intermediate floor in the opposite direction to the ejection direction. These have openings 226 and 226a, respectively, which are designed to receive bearing pins of the release lever 6, so that the release lever 6 can be rotatably mounted to the tabs 225 and 225a relative to the base. Fig. 6 and Fig. 7 a centrifugal funnel 228 can still be seen, and in the Fig. 7 a further opening 227. A locking pin can be inserted from the centering funnel 228, which extends through a through-opening (not shown) at the base of the centering funnel 228 and into the opening 227, where it is stored. In the Fig. Figure 8 shows how a locking pin 9 extends from outside the outer sleeve 21 through the centering funnel 228, an opening 227a at the base of the centering funnel, and the opening 227. The locking pin 9 is designed to prevent movement of the release lever 6 and / or the locking element 42 that would release the positive locking between the locking element 42 and the locking receptacle 224 when the spring 5 is tensioned and the locking mechanism, consisting of the locking element 42 and the locking receptacle 224, is engaged. The locking pin can be withdrawn before the ejection device is triggered in order to release the positive locking between the locking element 42 and the locking receptacle 224 by actuating the release lever 6, as described above, and thus trigger the ejection device.After re-tensioning the spring 5 by pressing on the ejector 4 against the release direction 7, the device can again be secured against unintentional release by inserting the pin 9, whereby the centering funnel guides the pin to the openings 227a and 227.

[0035] Fig. Figure 9 shows a detailed view of the release lever 6. The release lever 6 includes an actuating button 62 at its proximal end 61. Furthermore, a pair of coaxial bearing pins 64 and 64a, of which only bearing pin 64 is visible in the illustration, are arranged laterally on the release lever 6. The bearing pins 64 and 64a are designed to be inserted into the Fig. 7 and Fig.The actuating lever 6 is located at the openings 226 and 226a shown in Figure 8, whereby it is rotatably mounted on the base 2. In a distal region, the actuating lever 6 is angled so that a distal end 63 of the actuating lever lies adjacent to the detent element 42.

[0036] Although the subject matter of this description has been explained using selected exemplary embodiments, these are not intended to limit the claimed invention. The claims include embodiments that are not explicitly shown, and embodiments that differ from the examples shown are nevertheless covered by the claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] WO 2019 / 028741

[0005] JP 3218636 U

[0006] DE 27 12 754 A1

[0007] CN 216149046 U

[0008] US 6,572,435

[0008]

Claims

[1] Device for ejecting objects (1) comprising an outer sleeve (21) and an ejector (4) arranged in the outer sleeve, wherein the ejector is guided radially inside the outer sleeve and is movable along an axial direction, wherein an intermediate floor (22) is arranged inside the outer sleeve, which together with the outer sleeve forms a base (2) of the device for ejecting objects, and wherein an elastically prestressable element (5) is arranged in the axial direction between the ejector (4) and the intermediate floor (22), wherein the ejector has a detent element (42) and the base has a detent receptacle (224), wherein the detent element and the detent receptacle are configured and arranged to form a positive locking connection which is configured to block movement of the ejector away from the intermediate floor, wherein the elastically prestressable element (5) is dimensioned and arranged such that, when the locking element (42) is positively connected to the locking receptacle (224), it is under a prestress and exerts a force directed in an ejection direction (7) on the ejector (4), wherein furthermore the locking element and the locking receptacle are designed such that the locking element (42) with the locking receptacle (224) forms a backstop that locks on one side in the ejection direction (7), and wherein a release element (6) is further arranged which is configured to release the positive locking between the locking element and the locking receptacle. [2] Device according to claim 1, wherein the ejector (4) comprises a pin (43) which extends in the opposite direction of ejection (7) from a fixed end (431) of the pin to a free end (432) of the pin and the locking element (42) is arranged laterally on the pin spaced apart from the fixed end of the pin. [3] Device according to one of the preceding claims, wherein the locking receptacle (224) is provided on the intermediate floor (22). [4] Device according to the preceding claim, wherein the intermediate floor (22) has an opening (221) and the locking receptacle (224) is formed at the edge of the opening. [5] Device according to the preceding claim, wherein the opening (221) comprises a guide funnel (222) which tapers in the opposite direction to the ejection direction (7). [6] Device according to one of claims 4 or 5 in combination with claim 2, wherein at least the free end (432) of the pin up to and including the locking element (42) can be passed through the opening (221) from an upper side of the intermediate floor (22) facing the ejector (4) to an underside of the intermediate floor facing away from the ejector, and the locking element can be brought into a rear grip with the underside of the intermediate floor. [7] Device according to the preceding claim, wherein the opening and the pin are non-symmetrical in the circumferential direction, such that the pin can be inserted into the opening in exactly one circumferential orientation and can be passed through the opening with its distal end and with the locking element. [8] Device according to one of the preceding claims, wherein the locking element (42) comprises a locking tooth that locks on one side, with a first flank (421), a second flank (422) and a crest (423) arranged in the axial direction between the first flank and the second flank, wherein, viewed from the crest, the first flank is arranged opposite to the ejection direction (7) and the second flank is arranged in the ejection direction, wherein the first flank (421) is a ramp flank which is designed to rise in a ramp-like manner in the axial direction towards the crest and the second flank (422) is a locking flank. [9] Device according to one of the preceding claims, wherein the locking element (42) is arranged on the ejector (4) such that when the locking element is in positive engagement with the locking receptacle (224), it is held in positive engagement with the locking receptacle by an elastic restoring force and the release element (6) is configured to move the locking element out of positive engagement with the locking receptacle against the elastic restoring force. [10] Device according to one of the preceding claims, wherein the release element (6) is a lever which is movably mounted inside the outer sleeve (21) about an axis of rotation fixed relative to the outer sleeve, wherein a proximal end (61) of the lever can be actuated from outside the outer sleeve and a distal end (63) of the lever is arranged such that it is configured to release the positive locking between the locking element and the locking receptacle by a rotational movement of the lever about the axis of rotation.

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