Rotary locking system and method for the secure and error-free fastening of two objects to each other

Abstract

The invention relates to a rotary lock comprising: - a lock housing connected to a first object, with two opposing parallel housing walls; and - a rotating plate mounted rotatably inside the housing, extending between the two housing walls parallel to them; - wherein the lock is designed for attachment to a fastening eyelet connected to the second object; and - for this purpose, both the rotating plate and the housing have a radially outwardly open receiving opening for inserting the eyelet, a screw hole for inserting a screw or bolt in a direction parallel to the axis of rotation, as well as elements contributing to a mechanical stop; - such that the rotating plate can be rotated from its eyelet insertion position, in which its receiving opening is aligned with that of the housing, by applying lateral pressure to the eyelet inserted into the receiving opening, to a closing position defined by the stop, in which the rotating plate closes the receiving opening of the housing and all screw holes are directly aligned, so that a screw or bolt can be inserted into the blind or through hole formed thereby.

Description

[0001] The invention relates to a device for fastening two objects together, in other words, a lock. The invention also relates to an associated method for fastening two objects together, a correspondingly configured control unit, and a use for securing an object on board a vehicle.

[0002] To secure or attach an item located in a vehicle's luggage compartment (such as a mobility kit or a fire extinguisher) to a lashing eye, prior art solutions include attaching a carabiner or threading a lashing strap. However, a standard carabiner or lashing strap cannot be automatically checked for correct installation by the vehicle manufacturer. Poka-yoke, verification via a camera portal, or a screw-type locking mechanism are not possible with these solutions. Label scanning is only possible with a lashing strap, but even then, it is difficult because two straps are required for a reliable solution.

[0003] From DE 10 2020 111 177 A1, a rotary lock for fastening two objects together is known. This lock has a housing fixedly connected or connectable to a first object, with two opposing parallel housing walls, and a rotating plate rotatably mounted inside the housing about a pivot axis fixedly connected to the housing. The rotating plate extends between the two housing walls parallel to them. The lock is designed for secure and reliable fastening to a fastening eyelet fixedly connected or connectable to the second object. For this purpose, both the rotating plate and the housing have a radially outwardly open receiving opening for inserting the eyelet in a direction radial to the axis of rotation, as well as elements contributing to a mechanical stop, such that the rotating plate, from its eyelet insertion position in which its receiving opening is aligned with that of the housing,The eyelet inserted into the receiving opening can only be rotated by applying lateral pressure to it up to a closing position defined by the mechanical stop, in which the rotating plate closes the receiving opening of the housing.

[0004] The object of the present invention is to provide an alternative and / or improved concept for fastening two objects together, which offers improvements over known solutions, for example, with regard to reliability, safety, simplicity, and / or other aspects. The concept should be particularly suitable for securing an object in the luggage compartment or at another location in a vehicle.

[0005] This problem is solved by a rotary lock according to claim 1, as well as by a corresponding system, an associated method, a correspondingly configured control unit, and a use according to the dependent claims. Further embodiments are specified in the dependent claims. All further features and effects mentioned in the claims and the following description for the rotary lock also apply to the system, the method, the control unit, and the use, and vice versa.

[0006] According to a first aspect, a rotary lock (hereinafter also referred to simply as "lock") is provided, which is designed for the secure and reliable fastening of two objects to one another. The term "object" here is to be understood as any solid material object and is in no way to be interpreted as restrictive. The respective object can be movable or immovable relative to the ground. One of the objects can therefore, in particular, be a means of transport, including a vehicle, or an immovable structure such as a housing wall or a rock, while the second object, for example a portable one, is to be fastened to it using the aforementioned lock.

[0007] The rotary lock presented herein comprises a lock housing, fixedly or connectable to a first object, with two opposing, mutually parallel housing walls, and a rotating plate rotatably mounted inside the housing, extending between the two housing walls parallel to them. The axis of rotation about which the rotating plate is rotatably mounted can either be fixedly connected to the housing or form an integral part of it. The terms "radial" and "axial" used herein always refer to this axis of rotation of the lock.

[0008] The rotary lock is designed for secure and reliable attachment to a fastening eyelet (hereinafter also referred to as "eyelet") that is permanently connected or connectable to the second object. For this purpose, the rotating plate has a radially outwardly open receiving opening for inserting the eyelet in a direction radial to the aforementioned axis of rotation, a screw hole located away from the axis of rotation and separate from the receiving opening for inserting a screw or bolt in a direction parallel to the axis of rotation, and one or more additional elements that contribute to a mechanical stop and may be designed differently depending on the specific embodiment. The same applies to the housing and its housing walls.

[0009] The design and arrangement of these lock components are such that the rotating plate, from its eyelet insertion position—where its receiving opening aligns with that of the housing (viewed axially) and thus forms a "receiving opening of the lock"—can only be rotated by applying lateral pressure to the eyelet inserted into the receiving opening up to a closed position defined by the mechanical stop. In the closed position, the rotating plate closes the receiving opening of the housing, thereby trapping, i.e., enclosing, the eyelet within the lock.Furthermore, in the closed position, all screw holes (viewed in the axial direction) lie directly above one another, so that the closed position can be permanently and reliably fixed by inserting a screw or bolt into the resulting through hole (if, in addition to the rotating plate, both housing walls also have "overlapping" screw holes) or blind hole (from two "overlapping" screw holes of the rotating plate on the one hand and one of the housing walls on the other).

[0010] One aspect of the proposed rotary lock is that it eliminates user error because the screw (or bolt) can only be inserted once the eyelet is already engaged in the lock. Furthermore, this screw mechanism provides a reliable way to monitor and document the successful closure of the eyelet within the lock. Therefore, the proposed rotary lock is particularly suitable for use in safety-critical applications, such as securing cargo in / on a vehicle or equipping mountaineers or climbers.

[0011] The steps required to secure the eyelet in the lock are clearly predefined by the lock's design, making it exceptionally easy to use and requiring no special skills or prior knowledge. Furthermore, the lock is characterized by a very compact design and a minimal number of different components, which also have simple geometries and can therefore be manufactured with minimal material and production costs.

[0012] Both the receiving openings and the screw holes (and also the guide slots mentioned below) are through-holes in the rotating plate or the respective housing wall, respectively, in the direction of the lock's axis of rotation. The receiving openings in both housing walls are located directly above one another and, in the simplest (and most practical) case, are identical, although this is not mandatory. The same applies to the screw holes. The housing can be rigidly connected (i.e., attached) to the first object, for example, by molding, welding, or screwing it on, or movably attached, for example, by a flexible strap that is attached at one end to the first object and at the other end to the housing, perhaps "threaded" through a suitable opening and then sewn on in a loop.The same applies to the connection of the eyelet to the second object. Materials for the individual components can include metal and / or plastic, particularly fiber-reinforced plastic for increased robustness. Due to their simple geometry, all common manufacturing methods can be used to produce the individual components of the lock, including 3D printing, stamping, injection molding, turning, milling, drilling, and many more.

[0013] In a specific embodiment, the rotating plate, which is rotatably mounted inside the housing, can bear in full contact with one or both housing walls on one or both sides, creating static friction between it and the housing. This friction holds the plate in its respective rotational position, at least during the process described herein, and must be overcome to rotate the plate. This design also allows for a further reduction in the construction complexity (the rotating plate can simply be placed between the two housing walls, similar to a washer) and the size, particularly the height, of the lock. This, in turn, allows it to be lighter and / or suitable for smaller eyelet sizes.

[0014] According to one embodiment, the radially outwardly open receiving opening does not extend beyond a predetermined maximum thickness of the eyelet to be received within it, in its extent around the axis of rotation. In the rotating plate, the receiving opening is limited to this size by approximately radially extending side edges. In the respective housing wall, however, the receiving opening in this embodiment is limited by such a side edge only on one side, while on its other side it transitions into an eyelet guide slot that extends around the axis of rotation in an arc within a predetermined angle and is designed to guide the eyelet inserted through the receiving opening in the lock. The eyelet guide slot is not open radially outward and therefore holds / guides the eyelet in the lock after it has been pushed from the receiving opening into the eyelet guide slot by applying slight pressure.

[0015] When the eyelet is pushed along the eyelet guide slot in this embodiment, it simultaneously pushes the rotating plate and thus rotates it around the lock's axis of rotation, since its receiving opening is limited on both sides by radial edges and the eyelet therefore abuts against these edges. The aforementioned extension of the receiving opening around the axis of rotation, or the maximum usable eyelet wire thickness, can, for example, depending on the specific application, range from 0.5 cm to several centimeters, and in a vehicle application, for example, be approximately 1 cm.

[0016] In a particularly simple version of this embodiment, the locking position is reached when the eyelet strikes the end of the eyelet guide slot (which constitutes the aforementioned mechanical stop). In another version, an arc-shaped pin guide slot is formed in the rotating plate around the axis of rotation. In this version, a corresponding pin is rigidly connected to at least one of the two housing walls and extends axially through the rotating plate within the pin guide slot, with the pin striking one end of the pin guide slot resulting in the eyelet insertion position of the rotating plate and the other end resulting in its locking position.A third variant differs from the second variant only in that the pin guide slot is not formed in the rotating plate, but in at least one of the two housing walls, and the pin is not fixedly connected to the housing, but to the rotating plate and extends axially through the at least one housing wall within the pin guide slot, whereby here too, the contact of the pin at one end of the pin guide slot results in the eyelet insertion position of the rotating plate and at the other end its locking position.

[0017] In a specific further development of the second or third variant, a small, nose-shaped projection can be formed on at least one inner wall of the pin guide slot at a distance from at least one end of the pin guide slot that depends on the pin diameter. This projection slightly narrows the pin guide slot at this point, making it possible for the pin to overcome the opening only with slightly increased pressure. This allows the pin, and thus the lock, to be additionally fixed in the relevant stop position. In the case of a cylindrical pin, the aforementioned distance of the nose-shaped projection can be, for example, slightly more than half the pin diameter. In the case of a pin with a rectangular cross-section, the aforementioned distance of the nose-shaped projection can be correspondingly slightly more than the length of the relevant cross-sectional side of the pin.

[0018] In particular (but not necessarily), the mounting of the rotating plate in the housing may additionally include a spring which is tensioned when the rotating plate is turned from the eyelet insertion position to the locking position, so that the lock immediately falls back into the eyelet insertion position after the eyelet is removed and is therefore always in its best starting position for the next use.

[0019] For final fixing of the lock with a screw, at least one of the screw holes can have a corresponding internal thread. Alternatively or additionally, tightening a nut against the housing wall opposite the screw head after inserting the screw in the locked position can also serve as final fixing. Similarly, no internal thread is required for final fixing with a bolt. In this case, the bolt head should have a larger diameter than the diameter of the screw holes and an external thread at the opposite end for tightening a nut, so that the nut can be tightened against the housing wall opposite the bolt head after inserting the bolt in the locked position to fix it in place.

[0020] According to another aspect, a rotary locking system is designed for the secure and reliable fastening of two objects together. The system comprises at least one rotary lock of the type described herein, which is permanently attached or attachable to a first object, and at least one fastening eyelet, permanently attached or attachable to a second object. The eyelet's bail fits into the receiving opening of at least one of these rotary locks, allowing its rotating plate to be turned to the locked position by applying lateral pressure to the eyelet inserted into the receiving opening. The system can include one or more locks and eyelets, which may be identical or different in design. The individual locks and / or eyelets of the system may differ, for example, in their size and material, which can vary considerably depending on the application.

[0021] According to a further aspect, a method for securely and reliably fastening two objects together using a rotary lock system of the type presented herein is provided. In this method, the lock housing of a rotary lock is permanently connected to a first object, while a fastening eyelet is permanently connected to the second object, to which the first object is to be attached.

[0022] In this process, the rotating plate is first turned into its eyelet insertion position within the lock housing (if it is not already in this position), so that the receiving openings of the rotating plate and the housing are aligned. Then, the eyelet, or its shackle, is inserted radially to the lock's axis of rotation into the aligned receiving openings of the rotating plate and the housing, with the eyelet plane approximately perpendicular to the housing wall plane. The rotating plate is then turned by applying lateral pressure to the eyelet until it reaches the mechanical stop, which corresponds to the locking position of the rotating plate within the lock. The eyelet is now locked in the lock because the receiving opening of the housing is closed by the rotating plate.To prevent this locking position from loosening on its own or through accidental contact, a screw or bolt is inserted into the blind or through hole formed by all the existing screw holes. Finally, the inserted screw or bolt can be further secured by tightening a nut against the housing wall opposite the screw or bolt head. This optional step can be used, for example, in applications where the eyelet needs to remain locked in place for an extended period and / or the lock may be subject to movement or vibrations, such as those that occur on board a vehicle or when carried by a person (e.g., in / on a backpack or other body-worn equipment).The proposed method can be implemented in a partially or fully automated manner, for example, in a factory or workshop on a suitable linear rail, etc. However, due to the simplicity of its steps, it can also be performed manually by anyone.

[0023] According to one embodiment, screwing the screw into an internal thread of the screw holes and / or tightening a nut against the housing wall facing away from the screw or bolt head is carried out using an electric screwdriver (for example, a cordless screwdriver) or a different type of screwdriving system, which allows for automatic detection of the required torque. In this embodiment, the torque is automatically detected and stored in the electric screwdriver or screwdriving system during the aforementioned process step and / or transmitted to an external control unit in order to verify, document, and / or monitor the proper fastening of both objects to one another, for example, by comparing it with a previously specified nominal torque.

[0024] According to another aspect, a control unit is provided which is designed and configured to automatically execute at least some steps of the procedure presented herein (for example, at least the aforementioned acquisition and / or further processing of the torque required for the screw application). For this purpose, a corresponding computer program (software) can be loaded into a processor of the control unit and executed either manually or by a predetermined sensor-based trigger during the execution of the procedure.

[0025] According to another aspect, the rotary locking system presented herein is intended for the secure and reliable fastening of an object, such as a fire extinguisher or mobility kit, in the luggage compartment or elsewhere in a vehicle. For example, a rotary lock of this system can be permanently attached to the object and a fastening eyelet to the vehicle, or vice versa. The vehicle can be a motor vehicle, but also any other land, air, or watercraft. Alternatively, the presented rotary locking system and the associated method can also be used, for example, in the equipment of climbers or mountaineers, but also in virtually any other case where a stable and, at the same time, error-proof or easily controllable fastening of two objects to each other is required.

[0026] The above aspects of the invention, its embodiments, and specific configurations are explained in more detail below with reference to the examples shown in the accompanying drawings. The drawings serve as schematic illustrations of the basic structural and functional principles. They may, but need not, be understood as being to scale. Identical elements or elements corresponding in function are designated with the same reference numerals in individual figures. The drawings show: Fig. 1 a perspective view of a rotary lock system according to an embodiment of the invention for fastening an object connected to the lock by a sewn-on webbing strap to a vehicle-mounted eyelet, wherein the rotating plate of the lock is in its eyelet insertion position; Fig. 2 a view as in Fig. 1, wherein the eyelet has been inserted into the receiving opening of the lock; Fig. 3 a view as in Fig. 2, wherein the rotating plate has been turned to its stop by applying lateral pressure to the eyelet and is now in its closed position; Fig. 4 a view like in Fig. 3, wherein the locking position of the rotating plate is permanently fixed by inserting a screw into the superimposed screw holes; and Fig. 5 a top view of the rotating plate of the lock of the Fig. 1-4.

[0027] All the various embodiments, alternatives, and specific features of the rotary lock, the corresponding system, the associated method, the control unit, and the use according to the above aspects of the invention mentioned above in the description and in the subsequent claims can be found in the Fig. Examples 1 to 5 shown, in particular also as alternatives or in addition to the features shown therein, may be implemented. Therefore, they are not all repeated below. The same applies accordingly to the definitions and effects of individual features already given above, which are described in Fig. 1-5 are shown.

[0028] Fig. Figures 1 to 5 show, each in a similar perspective view, a rotary lock system 1 according to an embodiment of the invention. The system 1 comprises a rotary lock 2 of the type presented herein and a suitably dimensioned fastening eyelet 3, which in this example is permanently attached in the luggage compartment of a vehicle (not shown) and can in particular be designed as a lashing eyelet made of metal or plastic.

[0029] The rotary lock 2, similar to the state of the art with carabiners, is sewn securely to an item located in the luggage compartment (mobility kit, fire extinguisher, etc.) by means of a webbing strap 4. The in Fig. The end of the webbing 4 shown in Figure 1 is, in turn, sewn securely to the lock 2. For this purpose, a housing 5 of the lock 2 in this example includes a webbing slot 6 through which the webbing 4 is threaded, so that its end forms a loop which in this example is sewn in place by a seam 7.

[0030] In Fig. In Figure 1, system 1 is in its released state, with the eyelet 3 separated from the lock 2. In this example, the lock housing 5 is formed by two opposing, parallel housing walls 8 and 9, which are connected to each other on their sides facing away from the eyelet 3 and also feature the strap slot 6 in this area. A rotating plate 10 is rotatably mounted inside the housing and extends parallel to the two housing walls 8 and 9. The axis of rotation 11, about which the rotating plate 10 is rotatably mounted, is either rigidly connected to the housing 5 or forms an integral part of it. The terms "radial" and "axial" always refer to this axis of rotation 11 of the lock 2.

[0031] The rotating plate 10 has a radially outwardly open receiving opening 12 for inserting the eyelet 3 in a direction R1 radial to the axis of rotation 11 and a screw hole 14 located away from the axis of rotation 11 and formed separately from the receiving opening 12 for inserting a screw 15 (see figure). Fig. 4) or a bolt in a direction R2 parallel to the axis of rotation 11 (see Fig. 4) The same applies to the housing 5 or, in this example, both housing walls 8 and 9, which are identical in design for illustrative purposes only and (each superimposed) also have a receiving opening 12 and a screw hole 16.

[0032] In Fig. In Figure 1, the rotating plate 10 is in its eyelet insertion position, with the receiving openings 12 of the rotating plate 10 and the housing 5 directly aligned axially. In this position, the rotating lock 2 has a receiving opening 12 that can be hooked onto the lashing eye 3. However, the screw holes 16 of both housing walls 8 and 9, which are directly aligned, do not yet overlap with the screw hole 14 of the rotating plate 10, as additionally shown in Figure 1. Fig. 2 is highlighted by circular markings M1.

[0033] As in Fig. 1 (and Fig. 5) As can be seen particularly well, the receiving opening 12 in the rotating plate 10 is bounded by approximately radial side edges, the distance between which corresponds to the largest usable wire diameter of the eyelet 3. In the respective housing wall 8 and 9, however, the receiving opening 12 in this embodiment is only on the side shown in Fig. 1 on the left side is limited by such a side edge, while on its right side it transitions into an eyelet guide slot 17, which extends around the axis of rotation 11 in an arc shape within a predetermined angle of, for example, approximately 70°-90° and is designed to guide the eyelet 3 inserted over the receiving opening 12 in the lock 2.

[0034] Additionally, in this example, an arc-shaped pin guide slot 18 is formed in the rotating plate 10 around the axis of rotation 11. In this variant, a corresponding pin 19 is rigidly connected to at least one of the two housing walls 8 and 9 and extends axially through the rotating plate 10 within its pin guide slot 18. The pin 19 is located in the rotating plate 10. Fig. 1 The eyelet insertion position of the rotating plate 10 shown is defined by the mechanical stop of the pin 19 at one end of the pin guide slot 18, while the striking of the pin 19 at the other end of the pin guide slot 18 defines the locking position (cf. Fig. 3 and Fig. 4) corresponds.

[0035] Fig. Figure 2 shows the rotary lock system 1 of the Fig. 1, after the eyelet 3 has been inserted radially into the receiving opening 12 of the lock 2. The rotating plate 10 is located in this position. Fig. 2 remains in its eyelet insertion position, and eyelet 3 remains in a most suitable orientation, in which the eyelet plane is approximately perpendicular to the housing wall plane. In Fig. 2 it can be clearly seen that by applying lateral pressure to the eyelet 3 the rotating plate 10 can be rotated around the axis of rotation 11, while the eyelet 3 moves from the receiving opening 12 into the eyelet guide slot 17.

[0036] Fig. Figure 3 shows the result of this rotation. Here, the rotating plate 10 has been rotated in the indicated direction R3 until the pin 19 abuts the other end of the pin guide slot 18 and is now in its closed position. In this position, the rotating plate 10 closes the receiving opening 12 in the housing 5, so that the eyelet 3 is trapped within it.

[0037] At the same time, the closed position of the Fig. 3. All three screw holes 14 and 16 are directly above one another, which is further emphasized by a circular marking M2. In other words, a threaded opening in the rotary lock 2 is exposed. Now a screw 15 (in this example a hexagon screw) or a bolt can be inserted, which holds the rotary plate 10 in the locked position. This is in Fig. 4 shown. By optionally using a factory screw system, this screw connection (and / or the optional tightening of a nut on the opposite side of the lock 2, which is shown in Fig. 1-4 is covered) is now documented.

[0038] In this specific example, confirmation or monitoring of the correct installation / process sequence is carried out via a bolting operation performed with a suitable factory bolting machine. The bolting machine automatically records the torque and transmits this information to a correspondingly configured control unit for evaluation or documentation.

[0039] The described procedure can be summarized as follows: After the lashing eye bracket is attached to the rotary lock 2 presented herein, the bracket is captured in the lock housing 5 and a threaded opening is simultaneously exposed. Only when the bracket is attached can a screw 15 or a bolt be inserted and the nominal torque be achieved, confirmed, and documented by the screw system.

[0040] Fig. Figure 5 additionally shows a top view of the rotating plate 10 of the lock 2 from the Fig. 1-4. By way of example, a small, nose-shaped projection 20 is formed at both ends of the pin guide slot 18 on its outer inner wall. This projection slightly narrows the pin guide slot 18 at this point, and therefore the pin 19 (whose position at the respective stop is indicated by hatching) only engages the eyelet 3 when pressure is increased. This allows the pin 19, and thus also the lock 2, to be optionally additionally fixed in the respective stop position, which defines the locking position. The central through-hole for the pivot axis 11 is also indicated by hatching. For the remainder of the description, please refer to the above description of the rotating plate 10 to avoid repetition. Fig. 1-4 referred. Reference symbol list 1 rotary lock system 2 rotary locks 3 fastening eyelets 4 webbing 5 cases 6 webbing slots 7th seam 8 Housing wall 9 Housing wall 10 Rotating plates 11 axis of rotation 12 Intake opening 14 screw holes in the rotating plate 15 screws 16 screw holes in the housing 17 eyelet guide slots 18 pin guide slots 19 pens 20 nose-shaped protrusion M1 / M2 circular markings R1-R3 directions of movement

Claims

[1] Rotary lock (2) for fastening two objects together, comprising: - a lock housing (5) firmly connected or connectable to a first object, with two opposing parallel housing walls (8, 9); and - a rotating plate (10) rotatably mounted inside the housing about a rotation axis (11) fixedly connected to the housing (5), which extends between the two housing walls (8, 9) parallel to them; - wherein the lock (2) is designed for secure and faultless attachment to a fastening eyelet (3) that is permanently connected or connectable to the second object; and - for this purpose both the rotating plate (10) and the housing (5) have a radially outwardly open receiving opening (12) for inserting the eyelet (3) in a direction radial to the axis of rotation (11) (R1), a separate screw hole (14, 16) for inserting a screw (15) or a bolt in a direction parallel to the axis of rotation (11) (R2), as well as elements contributing to a mechanical stop; - such that the rotating plate (10) from its eyelet insertion position, in which its receiving opening (12) is aligned with that of the housing (5), can only be rotated by applying lateral pressure to the eyelet (3) inserted into the receiving opening (12) up to a locking position defined by the mechanical stop, in which the rotating plate (10) closes the receiving opening (12) of the housing (5) and all screw holes (14, 16) are directly aligned, so that the locking position can be permanently fixed by inserting a screw (15) or a bolt into the blind or through hole formed thereby. [2] Rotary lock (2) according to claim 1, wherein - the rotating plate (10) which is rotatably mounted inside the housing is in full contact with one or both housing walls (8, 9) on one or both sides, creating static friction between it and the housing (5) which holds it in its respective rotational position and which must be overcome to rotate the rotating plate (10). [3] Rotary lock (2) according to claim 1 or 2, wherein - the radially outwardly open receiving opening (12) does not extend around the axis of rotation (11) beyond a predetermined maximum thickness of an eyelet bracket to be received therein and is limited to this size in the rotating plate (10) by side edges extending approximately radially; - the receiving opening (12) in the relevant housing wall (8, 9), however, is only limited on one side by such a side edge, while on its other side it transitions into an eyelet guide slot (17) which extends around the axis of rotation (11) in an arc within a predetermined angle and is designed to guide the eyelet (3) in the lock (2); - so that the eyelet (3), which moves in the eyelet guide slot (17) as a result of pressure being applied, pushes the rotating plate (10) and thereby rotates it, whereby the locking position is reached when the eyelet (3) strikes the end of the eyelet guide slot (17). [4] Rotary lock (2) according to claim 1 or 2, wherein - the radially outwardly open receiving opening (12) does not extend around the axis of rotation (11) beyond a predetermined maximum thickness of an eyelet bracket to be received therein and is limited to this size in the rotating plate (10) by side edges extending approximately radially; - the receiving opening (12) in the respective housing wall (8, 9), however, is only limited on one side by such a side edge, while on its other side it transitions into an eyelet guide slot (17) which extends around the axis of rotation (11) in an arc shape within a predetermined angle and is designed to guide the eyelet (3) in the lock (2); - so that the eyelet (3), which moves in the eyelet guide slot (17) as a result of pressure being applied, pushes the rotating plate (10) and thereby rotates it; - wherein either in the rotating plate (10) or in at least one of the two housing walls (8, 9) an arc-shaped pin guide slot (18) is formed around the axis of rotation (11) and an associated pin (19), which is accordingly fixedly connected either to at least one of the two housing walls (8, 9) or to the rotating plate (10), extends axially through the rotating plate (10) or through the at least one housing wall (8, 9) within this pin guide slot (18), wherein the contact of the pin (19) at one end of the pin guide slot (18) results in the eyelet insertion position of the rotating plate (10) and at the other end its locking position. [5] Rotary lock (2) according to claim 4, wherein - on at least one inner wall of the pin guide slot (18) at a distance from at least one end of the pin guide slot (18) that depends on the pin diameter, a small nose-shaped projection (20) is formed, which slightly narrows the pin guide slot (18) at this point and can therefore only be overcome by the pin (19) with a slightly increased pressure on the eyelet (3), whereby the pin (19) and thus also the lock (2) can be fixed in the relevant stop position. [6] Rotary locking system (1) for a secure and error-free fastening of two objects to each other, comprising: - at least one rotary lock (2) fixedly connected or connectable to a first object according to one of the preceding claims; and - at least one fastening eyelet (3) permanently connected or connectable to the second object, the eyelet bracket of which fits into the receiving opening (12) of at least one of these rotary locks (2) when its rotating plate (10) is in its eyelet insertion position, so that the rotating plate (10) can be rotated to the locking position by applying lateral pressure to the eyelet (3) inserted into the receiving opening (12) of the lock (2). [7] Method for securely and reliably fastening two objects to one another by means of a rotary lock system (1) according to claim 6, wherein a rotary bolt (2) is fixedly connected to a first object and a fastening eyelet (3) is fixedly connected to the second object, comprising the steps: - Rotating the rotating plate (10) until its eyelet insertion position in the lock housing (5) is reached; - Inserting the eyelet (3) or its shackle in a radial direction with respect to the axis of rotation (11) of the lock (2) into its receiving opening (12), wherein a plane that can be stretched by the eyelet (3) or its shackle is approximately perpendicular to a plane parallel to the housing walls (8, 9); - Rotating the rotating plate (10) until it reaches the mechanical stop that defines its locking position in the lock (2) by applying lateral pressure to the eyelet (3); and - Inserting a screw (15) or a bolt into the blind or through hole formed by all screw holes (14, 16); and - preferably additionally fixing the inserted screw (15) or bolt by tightening a nut against the housing wall (9) opposite the screw or bolt head. [8] Method according to claim 7, wherein - the screwing of the screw (15) into an internal thread of at least one of the screw holes (14, 16) and / or the tightening of a nut against the housing wall (9) facing away from the screw or bolt head is carried out using an electric screwdriver or other screwing device which is designed to automatically detect the torque required; - the torque required in the electric screwdriver or the screwing system automatically records and stores data and / or transmits it to an external control unit; and - the proper fastening of both objects to each other is monitored by comparing the recorded torque with a predetermined nominal torque. [9] Control unit designed and configured to perform the method according to claim 7 or 8 at least partially automatically. [10] Use of a rotary lock system (1) according to claim 6 for a secure and error-free fastening of an object in the luggage compartment or at another location in a vehicle by a method according to claim 7 or 8, wherein a rotary lock (2) of this system (1) is fixedly connected to this object and a fastening eyelet (3) of this system (1) is fixedly connected to the vehicle, or vice versa.

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