Load-secured locking device

Description

[0001] The invention relates to a closure device according to the preamble of claim 1.

[0002] Such a locking device serves to connect two assemblies to each other. Such a locking device can be used, for example, to attach an object, such as a tool, to a higher-level assembly, such as a carrying device, a belt or strap, a ladder, a vehicle, scaffolding, or the like.

[0003] Such a closure device has a first closure part which has a locking element, a force transmission element which is operatively connected to the locking element and can be loaded along a force direction, and an actuating element which is movable relative to the locking element. The closure device also comprises a second closure part which has an engagement element. The locking element and the engagement element can be placed against one another to connect the first closure part and the second closure part to one another and are connected to one another in a closed position. In the closed position, when the force transmission element is loaded along the force direction, the locking element is loaded in a locking direction by the force action of the force transmission element in the direction of contact with the engagement element.The actuating element can be actuated to adjust the locking element counter to the locking direction to release the connection between the locking element and the engagement element.

[0004] Such a locking device can create a particularly secure connection in that the locking element is secured in its connection with the engagement element by the force acting on the force transmission element, whereby the force transmission element loads the locking element in the direction of engagement with the engagement element. The connection between the locking parts can be released by actuating the actuating element, thereby causing the locking element to be moved counter to the locking direction and thus out of engagement with the engagement element.

[0005] EP 3 093 525 B1 discloses a device for holding a loop formed in an elongated element, having the features of the preamble of claim 1, which comprises a base part, a support ring, and jaws displaceable radially relative to the support ring. At least one elastic element loads the jaws radially inward, whereby, when the loop bears against radially outer ends of the jaws, the jaws engage positively in the base part in an inwardly pushed position. A puller is axially adjustable relative to the base part and the support ring in order to press the jaws radially outward and release their positive engagement with the base part.

[0006] From EP 2 475 278 B1 a closure device with two closure parts is known, in which the two closure parts are held together in a closed state under load by frictional engagement or by a locking connection, wherein magnetic means act to generate an attractive force between the closure parts in order to magnetically assist the transfer of the closure device into the closed state.

[0007] The object of the present invention is to provide a closure device which is easy to close and can provide a firm connection between closure parts in a closed position, with comfortable handling for opening the closure device.

[0008] This object is achieved by an article having the features of claim 1.

[0009] Accordingly, in the closure device, the first closure part has a first magnetic element and the second closure part has a second magnetic element, wherein the first magnetic element and the second magnetic element interact in a magnetically attractive manner when the blocking element and the engagement element are placed against one another.

[0010] In the closure device, a resilient connection is created between the closure parts by the force transmission element being operatively connected to the locking element on the first closure part side. Upon application of a load to the force transmission element, the locking element of the first closure part is secured in its engagement with the engagement element of the second closure part. Thus, a load on the force transmission element results in a force acting on the locking element in a locking direction toward contact with the engagement element, so that a load on the force transmission element causes the locking element to be held in force-loaded engagement with the engagement element.

[0011] The closure device can be conveniently closed by magnetically assisting the locking element and the engagement element against each other by magnetic elements of the closure parts. The magnetic elements interact in a magnetically attractive manner such that the locking element and the engagement element are magnetically assisted, and thus the locking element and the engagement element preferably engage with each other at least largely automatically when the locking element and the engagement element are brought against each other.

[0012] In addition, the locking device can also be opened comfortably and easily, particularly when the load on the force transmission element is relieved. To open it, the actuating element can be actuated, which is operatively connected to the locking element in such a way that the locking element is adjusted counter to the adjustment direction when the actuating element is actuated. The locking element can be adjusted by the actuating element acting on the locking element. However, the locking element can also be adjusted, for example, by a pre-tension and / or elasticity on the locking element, without the actuating element acting directly on the locking element, so that in this case the actuating element merely enables the locking element to be returned from the closed position, but the locking element is returned at least largely automatically due, for example, to a pre-tension and / or elasticity on the locking element.

[0013] The actuating element and the locking element can also be designed as a single piece, e.g., geometrically in the manner of a parallelogram, where actuation at one corner causes an angular change, e.g., a spreading of an opposite angle. In this case, sections of the locking element are movable and actuatable relative to the actuating element.

[0014] There may also be more than one locking element which can be actuated together via the actuating element.

[0015] In one embodiment, the force transmission element is formed by a tensile element capable of withstanding tensile loads. The force transmission element can, for example, be designed to be flexible, for example, by forming the force transmission element by a cable, a band, a strap, a belt, or the like, so that in this case, tensile forces, but not compressive forces, can be transmitted via the force transmission element.

[0016] In one embodiment, the force transmission element is implemented by the housing, which changes its position upon application of force, thereby blocking the locking element. In this embodiment, an additional force transmission element is omitted.

[0017] The locking parts of the locking device are assigned to assemblies that are to be connected to one another via the locking device. For example, one assembly is firmly connected to the second locking part, while the other assembly is connected to the first locking part, in particular to the force transmission element of the first locking part. If a force acts between the assemblies, a load can be placed on the force transmission element. This force action between the assemblies secures the connection. When a load is applied to the force transmission element, a force is applied to the locking element, thereby holding the locking element in contact with the engagement element.

[0018] In one embodiment, the force transmission element has an active section that extends at least partially circumferentially around the locking element. In particular, a force can be exerted radially inward via the active section, so that the locking element is subjected to a force load radially inward toward contact with the engagement element when a load is applied to the force transmission element along the force direction.

[0019] If the force transmission element is formed by a flexible tensile element, the active section can be formed, for example, by a loop which is arranged on the locking element and is in operative connection with the locking element in such a way that, when a tensile load is applied to the force transmission element, the locking element is loaded radially inwards and the locking element is thus held in engagement with the engagement element engaging in the locking element.

[0020] In one embodiment, the first closure part has a housing relative to which the locking element is elastically adjustable. The locking element can, for example, have one or more legs that can be elastically adjusted in order to bring the locking element into engagement with the engagement element to close the closure device and out of engagement with the engagement element to open the closure device. The locking element can be elastically prestressed relative to the housing, for example by an elastic connection to the housing or by one or more spring elements via which the locking element is elastically prestressed relative to the housing. However, the locking element can also be designed to be elastic in itself, so that, for example, legs of the locking element can be elastically adjusted relative to one another.

[0021] In one embodiment, the actuating element is subjected to a force load relative to the housing in the direction of a non-actuated position. Such a force load can be achieved, for example, by a mechanical spring element, via which the actuating element is elastically pre-tensioned relative to the housing. However, such a force load can also be achieved magnetically, for example, by the actuating element being subjected to a magnetic load in the closed position of the locking device in the direction of a non-actuated position.

[0022] The actuating element is thus preloaded toward a non-actuated position. After actuation, the actuating element automatically returns to its non-actuated position, so that the closure device can be closed again by bringing the locking element of the first closure part and the engagement element of the second closure part together and engaging them.

[0023] The first magnetic element is arranged on the actuating element and can be moved together with the actuating element when the actuating element is actuated. Due to the magnetic interaction between the first magnetic element on the actuating element of the first closure part and the second magnetic element on the engagement element of the second closure part, the closure parts are magnetically attracted to one another when placed against one another to close the closure device, so that the closing of the closure device is magnetically assisted. Because the first magnetic element is arranged on the actuating element, the actuating element can simultaneously be moved into its non-actuated position so that the locking element of the first closure part and the engagement element of the second closure part can be brought into engagement with one another and the closure parts can thus be connected to one another.If the actuating element is moved to open the locking device, the magnetic elements are also moved relative to each other, which, for example, weakens the magnetic attraction force between the magnetic elements and thus makes it easier to open the locking device by releasing the locking devices from each other.

[0024] In one embodiment, the locking element has an elastically deformable elastic section and at least one leg arranged on the elastic section and engageable with the engagement element. For example, the locking element can have a U-shaped configuration with two legs connected to one another via the elastic section. The legs can be elastically adjusted relative to one another under elastic deformation of the elastic section in order to establish engagement with the engagement element and to release the engagement with the engagement element.

[0025] The force transmission element is preferably arranged on the at least one leg in such a way that when the force transmission element is loaded, a force acts on the at least one leg and the at least one leg is loaded in the direction of the locking direction in contact with the engagement element.

[0026] If the force transmission element is designed, for example, as a flexible tension element, for example in the form of a rope, a band, a belt, a strap, or the like, a channel-shaped rope groove can be formed on the at least one leg, in which the force transmission element is arranged and via which an operative connection is established between the force transmission element and the at least one leg. When a load is applied to the force transmission element, a force is exerted on the leg in the direction of engagement with the engagement element.

[0027] In one embodiment, the actuating element has an actuating section which, when the actuating element is actuated, acts on the at least one leg in order to adjust the at least one leg counter to the locking direction to release the connection between the locking element and the engagement element. In this case, the actuating element acts directly on the locking element in order to adjust the locking element to release the connection between the closure parts and thereby disengage it from the engagement element. The actuating section can, for example, be designed in the manner of an inclined plane such that, when the actuating element is actuated, the actuating section runs onto an associated section of the locking element, for example on the at least one leg of the locking element, and thereby adjusts the at least one leg counter to the locking direction.

[0028] The actuating element can be actuated along an actuating direction perpendicular to the locking direction. Due to the operative connection between the actuating element and the locking element, a force deflection occurs, which causes the locking element to be displaced transversely to the actuating direction, namely opposite to the locking device, when the actuating element is actuated along the actuating direction, thus releasing the engagement between the locking element and the engagement element and allowing the locking parts to be released from each other.

[0029] In one embodiment, the locking element has a locking section that, in the closed position, positively engages with the engagement element. In the closed position, there is thus a positive engagement between the locking element and the engagement element, so that the closure parts are held together in a positive fit. When the force transmission element is subjected to a load, the engagement is additionally secured by the force acting on the locking element, so that the closure device cannot be opened under load, or at least not easily. (Simple) opening of the closure device is only possible when the load is relieved by actuating the actuating element.

[0030] In order to relieve the load on the force transmission element, a handle can be arranged on the force transmission element, for example, which a user can grip in order to reduce the introduction of force via the force transmission element into the first closure part.

[0031] In another embodiment, for example, a frictional connection can also exist between the locking element and the engagement element in the closed position, in which mutually associated friction surfaces of the locking element and the engagement element are in frictional contact with one another when the locking device is in its closed position. The frictional connection is secured when the force transmission element is loaded by the locking element being loaded into contact with the engagement element.

[0032] In one embodiment, the first closure part has a positive locking element in the form of, for example, a button or pin, which blocks the movement of the actuating element so that the closure cannot be opened accidentally even without a load.

[0033] A system, for example, comprises a working assembly and a closure device of the type described above. The working assembly can, for example, be arranged on the force transmission element, so that when a force is applied to the working assembly, a load is introduced into the first closure part via the force transmission element, thereby securing a connection between the closure parts of the closure device.

[0034] The working assembly can be formed, for example, by a tool, for example in the form of an electric tool such as a cordless screwdriver, a drill, or the like, or also in the form of a non-electric tool such as a hammer, a wrench, or pliers. The working assembly can be attached to a higher-level assembly, for example a supporting device, such as a ladder, scaffolding, a vehicle, or the like, via the locking device. When the working assembly is loaded, the connection is secured and the connection can be released when the load is removed, in order to separate the working assembly from the higher-level assembly.

[0035] According to a further aspect, a system comprises a user assembly and a closure device. The closure device has a first closure part and a second closure part. The first closure part comprises a force transmission element connected to the user assembly, which can be loaded along a force direction, and a first magnetic element. The second closure part comprises a second magnetic element. The first closure part and the second closure part can be placed against one another, are connected to one another in a closed position, and can be detached from one another to open the closure device. The first magnetic element and the second magnetic element interact in a magnetically attractive manner when the first closure part and the second closure part are placed against one another. It is provided that the force transmission element has a shock-reducing section that is deformable when a load is applied to the force transmission element.

[0036] The closure device can be designed in particular according to the type described above, so that reference is made in full to the preceding explanations of advantages and advantageous embodiments.

[0037] The force transmission element can be designed, in particular, as a tension element for transmitting tensile forces, preferably exclusively tensile forces. The force transmission element can, for example, be designed to be flexible, for example in the form of a rope, band, strap, belt, or the like. A useful assembly, for example a tool, can be connected to the first closure part via the force transmission element, wherein the useful assembly can be releasably secured to a higher-level assembly via the closure device.

[0038] The shock-absorbing section, which is deformable when the force transmission element is subjected to a load, can experience a change in length, particularly when the force transmission element is subjected to a shock load. The shock-absorbing section can, for example, comprise layers sewn together. In the event of a shock load that exceeds a limit force determined by the seam strength, the seams can tear, thus elongating the shock-absorbing section.

[0039] The shock-absorbing section can be plastically and irreversibly deformable, particularly by tearing open seams. Alternatively, the shock-absorbing section can also be elastically deformable.

[0040] The concept underlying the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. They show: Fig. 1 is a view of an embodiment of a closure device with a first closure part and a second closure part, which are placed against each other and held together in a closed position; Fig. 2A is a plan view of the arrangement according to Fig. 1 ; Fig. 2 Legs sectional view along the line AA according to Fig. 1 ; Fig. 3 an exploded view of the arrangement according to Fig. 1 ; Fig. 4 an exploded view of the closure device, with a force transmission element on the first closure part; Fig. 5A a plan view of the closure device in a closed position; Fig. 5B a sectional view along the line AA according to Fig. 5A ; Fig. 6A a plan view of the closure device when actuating an actuating element to open the closure device; Fig. 6B a sectional view along the line AA according to Fig. 6A ; Fig. 7A a top view of the closure device during closing; Fig. 7B a side view of the closure device; Fig. 7C a sectional view along the line AA according to Fig. 7A ; Fig. 7Your enlarged view in section B according to Fig. 7C ; Fig. 8A a top view of the closure device during further closing; Fig. 8B a side view of the closure device; Fig. 8C a sectional view along the line AA according to Fig. 8A ; Fig. 8Your enlarged view in section B according to Fig. 8C ; Fig. 9A a plan view of the closure device in a closed position; Fig. 9B a side view of the closure device; Fig. 9C a sectional view along the line AA according to Fig. 9A ; Fig. 9Your sectional view along the line CC according to Fig. 9B ; Fig. 10A a plan view of the locking device in the closed position, under load; Fig. 10B a side view of the locking device; Fig. 10C a sectional view along the line AA according to Fig. 10A ; Fig. 10Your sectional view along the line CC according to Fig. 10B ; Fig. 11A a plan view of the closure device in the closed position, with relief; Fig. 11B a side view of the closure device; Fig. 11C a sectional view along the line AA according to Fig. 11A ; Fig. 11Your sectional view along the line CC according to Fig. 11B ; Fig. 12A a plan view of the closure device, when the actuating element is actuated to open the closure device; Fig. 12B a side view of the closure device; Fig. 12C a sectional view along the line AA according to Fig. 12A ; Fig. 12Your sectional view along the line CC according to Fig. 12B ; Fig. 13A a top view of the closure device with the closure device open; Fig. 13B a ​​side view of the closure device; Fig. 13C a sectional view along the line AA according to Fig. 13A ; Fig. 13Your sectional view along the line CC according to Fig. 13B ; Fig. 14 a view of a closure device for connecting a useful assembly in the form of a tool to a higher-level assembly, for example a ladder; Fig. 15 a schematic view of a closure device with an associated useful assembly in the form of a tool to a higher-level assembly, for example a belt; Fig. 16 another view of a closure device with an associated useful assembly in the form of a tool to a higher-level assembly, for example a bracelet; Fig. 17A a view of another embodiment of a closure device, in a closed position, without load on a force transmission element; Fig. 17B the closure device according to Fig. 17A , under load in the closed position; Fig. 17C the locking device during opening; Fig. 18 a view of another embodiment of a locking device; Fig. 19A the locking device according to Fig. 18 in a closed position; Fig. 19B the locking device in the closed position under load; and Fig. 19C the locking device when actuated to open.

[0041] Fig. 1 bis 13A-13D show an embodiment of a closure device 1, which has a first closure part 2 and a second closure part 3 and serves to connect two assemblies to one another. A first assembly is assigned to the first closure part 2, while a second assembly is assigned to the second closure part 3, so that by connecting the closure parts 2, 3 to one another, the assemblies can be secured to one another.

[0042] The closure parts 2, 3 can be placed against one another along a closing direction X and are held against one another in a closed position, so that the assemblies assigned to the closure parts 2, 3 are connected to one another via the closure parts 2, 3. The first closure part 2 can be actuated to release the connection between the closure parts 2, 3 and thereby separate the assemblies assigned to the closure parts 2, 3 from one another.

[0043] In the illustrated embodiment, the first closure part 2 has a housing 20 which is formed by two housing parts 200, 201 which are attached to one another and firmly connected to one another to complete the housing 20.

[0044] The housing 20 encloses a locking element 24 which, in the illustrated embodiment, has a U-shaped configuration, with two legs 244, 245 which are connected to one another via an elastic section 243 and are elastically adjustable relative to one another under elastic deformation of the elastic section 243.

[0045] Additionally, an actuating element 23 is arranged on the housing 20, which is displaceable along an actuating direction B opposite to the closing direction X on the housing 20 and is operatively connected to the locking element.

[0046] The housing part 201 forms an opening 202 on a front side, which is divided into two sections by a guide section 205 of the housing part 200 and via which a force transmission element 21 in the form of a flexible tension element, shown for example in the exploded view according to Fig. 4 , is inserted into the housing 20. A handle 210 is arranged on the force transmission element 21, via which a user can engage the force transmission element 21. An assembly associated with the closure part 2 can be connected to the force transmission element 21, wherein such an assembly exerts a (tensile) load on the closure part 2 in a force direction F (see, for example, Fig. 7A ) is caused.

[0047] To connect the closure parts 2, 3 to one another, an engagement element 31 of the second closure part 3 can be inserted into an opening 204 at the bottom of the housing part 201 and brought into engagement with locking sections 241 formed by inner edges of the legs 244, 245 in the region of a bottom 240 of the locking element 24, as can be seen, for example, from the views according to Fig. 5A und 5B can be seen. In a closed position, the locking sections 241 of the legs 244, 245 engage with a circumferential locking projection 310 on a head end of the pin-shaped engagement element 31 of the closure part 3, said head end remote from a base 30, so that a positive connection is established between the closure parts 2, 3.

[0048] The actuating element 23 has, on an inner side facing the locking element 24, a projecting section 230 which projects through an opening 203 on an upper side of the housing part 200 and carries actuating sections 231 on opposite sides, via which an operative connection to the legs 244, 245 of the locking element 24 is established, as can be seen, for example, from Fig. 5B in conjunction with Fig. 6B can be seen. The locking sections 231 are each assigned to one of the legs 244, 245 and protrude into an engagement opening 242 of the locking element 24 such that upon actuation of the actuating element 23 in an actuating direction B, the actuating sections 231 designed in the manner of inclined planes run onto edge sections on the legs 244, 245 in the region of the engagement opening 242 and thereby adjust the legs 244, 245 along a spreading direction A to spread the locking element 24, as can be seen from Fig. 6B is evident.

[0049] The force transmission element 21 forms an active section 211 in the manner of a loop, which is placed around the locking element 24, as is shown for example in Fig. 4 in conjunction with Fig. 9D Each leg 244, 245 of the locking element 24 has a cable groove 246 in the form of a channel through which the force transmission element 21 extends. The active section 211 is placed on the outside around the elastic section 243 and extends, as can be seen from Fig. 9D visible, through both rope grooves 246 of the legs 244, 245 and through the opening 202 in the housing 20.

[0050] The closure device 1 has magnetic elements 22, 32, of which one magnetic element 22 is arranged on the section 230 of the actuating element 23 and thus on the first closure part 2, and the other magnetic element 32 is arranged on the engagement element 31 of the second closure part 3. The magnetic elements 22, 32 interact in a magnetically attractive manner such that the attachment of the closure parts 2, 3 to close the closure device 1 is magnetically assisted, and the engagement element 31 of the closure part 3 essentially automatically engages the locking element 24 of the closure part 2.

[0051] To close the closure device, the closure parts 2, 3 can be placed against each other along the closing direction X, as shown in Fig. 7A-7D and 8A-8D can be seen, so that the engagement element 31 passes through the opening 204 at the bottom of the housing 20 into contact with the locking sections 241 of the legs 244, 245 and, by running onto the locking sections 241, spreads the legs 244, 245 against one another along the spreading direction A, so that the locking element 24 is widened and the engagement element 31 snaps into engagement with the legs 244, 245.

[0052] In a closed position, shown in Fig. 9A-9D , the locking sections 241 of the legs 244, 245 in the region of the bottom 240 of the locking element 24 are in engagement with the locking projection 310 of the engagement element 31, so that a positive connection is established between the closure parts 2, 3.

[0053] The attachment of the closure parts 2, 3 is supported by the magnetic elements 22, 32 of the closure parts 2, 3 in a magnetically attractive manner, so that the engagement is essentially automatic.

[0054] Because the magnetic element 22 is arranged on the section 230 of the actuating element 23, the actuating element 23 is loaded into a non-actuated position during closing, in which the actuating element 23 in particular does not act on the locking element 24 to spread it open.

[0055] Guide sections 205, 206 are formed on the housing part 201 of the housing 20, as is shown for example in Fig. 4 in conjunction with Fig. 2B is visible. When the closure parts 2, 3 are placed against one another along the closing direction X, the engagement element 31 of the closure part 3 slides between the guide sections 205, 206 and is thereby guided on the housing 20, so that tilting of the closure parts 2, 3 when placed against one another is counteracted.

[0056] If, in the closed position of the closure device 1, a loading force is introduced into the force transmission element 21 in a force direction F, i.e. corresponding to a tensile load on the force transmission element 21, the active section 211 is contracted in the form of the loop and thereby adjusts the legs 244, 245 of the locking element 24 radially inwards, as can be seen from Fig. 10A-10D can be seen. As a result, the locking sections 241 on the inside of the legs 244, 245 are pressed into engagement with the locking projection 310 of the engagement element 31, so that the positive connection between the closure parts 2, 3 is secured when loaded on the force transmission element 21 and the closure parts 2, 3 cannot be easily separated from one another when loaded.

[0057] If the locking parts 2, 3 are to be released from each other, the load on the force transmission element 21 must be released. If no loading forces act in the direction of force F on the force transmission element 21, no special action is required. Without load, the locking element 24 of the locking part 2 moves into the position shown in Fig. 9A-9D . If, however, a load acts on the force transmission element 21, a user can grip the handle 210 and pull it (slightly) in a release direction L towards the locking device 1, so that the force transmission element 21 is thereby relieved of load at least in the area of ​​the locking device 1.

[0058] If the force transmission element 21 and thus the locking element 24 are relieved, according to the position according to Fig. 11A-11D , a user can engage the actuating element 23 and adjust it in the actuating direction B towards the housing 20, as is the case in the transition from Fig. 11A-11D towards Fig. 12A-12D When the actuating element 23 is actuated, the actuating sections 231 run onto the legs 244, 245 of the locking element 24 at the section 230 and thereby spread them outwards in the spreading direction A, so that the engagement between the locking element 24 and the engagement element 31 is canceled, as can be seen in particular from Fig. 12C is evident.

[0059] The closure parts 2, 3 can thus, as in Fig. 13A-13D shown, can be released from each other, whereby this can be done along the actuating direction B and thus in a movement sequence with actuation of the actuating element 23.

[0060] Because the magnetic element 22 is arranged on the actuating element 23, when the actuating element 23 is actuated, the magnetic element 22 is also removed from the magnetic element 32 on the engagement element 31 of the closure part 3, so that the magnetic attraction between the closure parts 2, 3 is weakened and the closure parts 2, 3 can be removed from each other with little force.

[0061] A closure device 1, as shown in the embodiment according to Fig. 1 bis 13A-13D can be used, for example, to connect two assemblies to one another, one of which is arranged on the force transmission element 21 and another assembly on the base 30 of the closure part 3. The assembly associated with the closure part 3 can, for example, be implemented by a belt 6, which is fixed to the base 30 via fastening elements in the form of belt connections 300, as shown schematically in Fig. 1 is marked.

[0062] In a Fig. 14 In the example shown, an assembly in the form of a tool 4 is connected, for example, to the force transmission element 21, which in the example shown is formed by a flexible tension element in the form of a rope, a band, a strap, or a belt. The locking device 1 serves in this case to secure the assembly in the form of the tool 4 and fixes the tool 4 to a higher-level assembly 5 in the form of a ladder. If a user N who is handling the tool 4 drops the tool 4, the tool 4 is secured to the ladder 5 via the locking device 1. If the user N wishes to release the tool 4, he can actuate the locking device 1 to open and separate the locking parts 2, 3 and thus remove the tool 4.

[0063] When working and moving on a ladder or scaffold, changing the attachment between the user and the scaffold can be carried out quickly and safely.

[0064] The tool 4 can be implemented by an electric tool, for example a drill, a cordless screwdriver, a saw or the like, or by a non-electric tool, for example a hammer, a wrench or any other tool.

[0065] However, assemblies that are connected to one another via a locking device 1 can also be of a completely different type, so the use of the locking device 1 is not limited to tools. For example, the locking device 1 can also be used on sports equipment, pets, for transporting goods, or for locking flaps and doors.

[0066] As in Fig. 15 and 16As shown, a shock-reducing section 217 can be arranged on the force transmission element 21, which dampens a shock when the assembly associated with the closure part 2 is dropped, in that a force-induced deformation can occur on the shock-reducing section 217, for example an elongation, as in the example according to Fig. 15 or 16 .

[0067] Force absorption at section 217 can occur, for example, by tearing seams of folded, sewn tape layers.

[0068] In a Fig. 17A bis 17C In the embodiment of a closure device 1 shown, closure parts 2, 3 are to be placed against one another along a closing direction X, so that in a closed position an engagement element 31 of the closure part 3 is in engagement with a locking element 24 of the closure part 2, as shown in Fig. 17A A force transmission element 21 is placed around the locking element 24 on the closure part 2, so that when a load is applied to the force transmission element 21, the locking element 24 is tensioned radially inward and pressed into engagement with the engagement element 31, as shown in Fig. 17B is shown. Under load, the connection between the closure parts 2, 3 is thus secured by the locking element 24 being tensioned in the direction of engagement with the engagement element 31.

[0069] On the closure part 2 in the Fig. 17A bis 17C In the illustrated embodiment, an actuating element 23 in the form of a slider which is displaceable along an actuating direction B and which is operatively connected to the locking element 24 is arranged. By displacing the actuating element 23 in the actuating direction B towards the housing 20 of the closure part 2, the locking element 24 can be spread, as is the case in the transition from Fig. 17B towards Fig. 17C is visible, so that the connection between the locking parts 2, 3 - with the force transmission element 21 relieved - can be released.

[0070] The closure parts 2, 3 have in the embodiment according to Fig. 17A bis 17C Magnetic elements 22, 32 that magnetically support the attachment of the closure parts 2, 3. The magnetic element 22 is arranged on the housing 20 of the closure part 2, so that during attachment, a magnetic attraction force exists between the engagement element 31 of the closure part 3 and the housing 20 of the closure part 2.

[0071] In another embodiment, the magnetic element 22 can be displaced in the actuation direction B when the actuation element 23 is actuated, thus facilitating the ejection of the closure part 3 and, if necessary, magnetically assisting it.

[0072] In a Fig. 18 and 19A-19C In the embodiment shown, closure parts 2, 3 are to be placed against each other along a closing direction X, so that an engagement element 31 of the closure part 3 engages with a locking element 24 of the closure part 2, as can be seen from Fig. 18 in conjunction with Fig. 19A is evident.

[0073] The locking element 24 is in the embodiment according to Fig. 18 and 19A-19C designed in the manner of a U-shaped clamp, with legs 244, 245 which are elastically connected to one another via an elastic section 243 and enclosed in a housing 20 of the closure part 2.

[0074] In the illustrated embodiment, the force transmission element 21 is realized by a slide element which has a central recess 212 which extends circumferentially around the locking element 24 and has, on an inner contour pointing inwards towards the locking element 24, projecting sections 213, 214 for interacting with the legs 244, 245 of the locking element 24.

[0075] A tension element in the form of a rope, a band, a belt or the like can be arranged on the force transmission element 21, to which in turn an assembly, for example a tool, can be fastened.

[0076] Actuating elements 23 are arranged on the housing 20, on opposite end faces, and are designed to act on the force transmission element 21. The actuating elements 23 can, for example, be pivotably arranged on the housing 20 and can each be pressed into an associated recess 215 on the outside of the force transmission element 21 with an inclined surface formed at one end, such that the respective inclined surface 232 runs onto an associated run-on slope 216 in the region of the recess 215.

[0077] If the closure parts 2, 3 are to be placed against each other, the actuating elements 23 are to be actuated, for example, so that by interaction of the actuating elements 23 with the force transmission element 21, in particular the inclined surfaces 232 with the run-on slopes 216, the force transmission element 21 is moved in a relief direction L in the housing 20 in the Fig. 19A shown position. This occurs counter to the prestressing effect of a spring element 218, designed, for example, as a compression spring.

[0078] In the Fig. 19A In the position shown, the closure parts 2, 3 can be placed against each other so that the engagement element 31 engages with the locking element 24, magnetically supported by a magnetically attractive effect of magnetic elements 22, 32 of the closure parts 2, 3. In the position shown in Fig. 19A In the position shown, the legs 244, 245 can deflect radially outwards in particular, so that the engagement element 31 can be pushed between the legs 244, 245 and can come into positive engagement with the legs 244, 245.

[0079] If the actuating elements 23 are released and the force transmission element 21 is loaded in the force direction F, as shown in Fig. 19B As shown, the projecting sections 213, 214 on the inner contour of the force transmission element 21 run onto associated projecting sections of the legs 244, 245, so that the legs 244, 245 are thereby loaded radially inward and pressed into engagement with the engagement element 31. The connection between the closure parts 2, 3 is thus secured - under loading of the closure parts 2, 3 relative to one another.

[0080] If the closure parts 2, 3 are to be released from each other again, the actuating elements 23 can be pressed into the housing 20 in the actuating direction B, preferably when the force transmission element 21 is relieved, so that the inclined surfaces 232 again run onto the run-up slopes 216 in the area of ​​the recesses 215 on the outside of the force transmission element 21 and thereby adjust the force transmission element 21 in the relief direction L. The force transmission element 21 thus again reaches the position according to Fig. 19A . Due to the elastic tension between the legs 244, 245, caused by the elastic section 243, the legs 244, 245 are positioned radially outward, so that the engagement element 31 can be removed from the area of ​​the locking element 24.

[0081] The adjustment of the force transmission element 21 in the relief direction L occurs counter to the preloading effect of the spring element 218. After actuation, the force transmission element 21 is automatically returned in the force direction F by an adjustment path, so that the force transmission element 21 is spring-loaded in the direction of its closed position.

[0082] The idea underlying the invention is not limited to the embodiments described above, but can also be implemented in a completely different way.

[0083] A locking device of the type described can be used to connect very different assemblies to one another.

[0084] The force transmission element does not necessarily have to be subjected to tensile stress, but can also be subjected to compressive stress, for example, in which case the force transmission element must be designed to be compression-resistant.

[0085] The locking element can have a U-shape, although this is not mandatory. The locking element can also be formed, for example, by a single locking section that is elastically spring-loaded relative to a housing of the associated closure part.

[0086] The actuation direction of the actuating element can be perpendicular to the direction of force along which the force transmission element is to be loaded, although this is not mandatory. The actuation direction can also be oblique or collinear to the direction of force. Bezugszeichenliste

[0087] 1 Locking device 2 Locking part 20 Housing 200, 201 Housing part 202 Opening 203 Opening 204 Opening 205, 206 Guide section 21 Force transmission element (tension element) 210 Handle 211 Active section (loop) 212 Recess 213, 214 Projection 215 Cutout 216 Run-up bevel 217 Shock-reducing section 218 Spring element 22 Magnetic element 23 Actuating element 230 Section 231 Actuating section 232 Inclined surface 24 Locking element 240 Base 241 Locking section 242 Engagement opening 243 Elasticity section 244, 245 Leg 246 Rope groove 3 Locking part 30 Base 300 Belt connection 31 Engagement element 310 Locking projection 32 Magnetic element 4 Tool assembly 5 Assembly 6 Belt A Spreading direction B Actuation direction E Locking direction F Force direction L Release direction N User X Closing direction

Claims

1. A closure device (1), comprising a first closure part (2) that includes a locking element (24), a force transmission element (21) operatively connected to the locking element (24), which can be loaded along a force direction (F), and an actuating element (23) movable relative to the locking element (24), and a second closure part (3) that includes an engagement element (31), wherein the locking element (24) and the engagement element (31) can be attached to each other for connecting the first closure part (3) and the second closure part (3) to each other and are connected to each other in a closed position, wherein in the closed position, when the force transmission element (21) is loaded along the force direction (F), the locking element (24) is loaded in a locking direction (E) towards contact with the engagement element (31) by the action of force of the force transmission element (21), wherein the actuating element (23) can be actuated in order to adjust the locking element (24) against the locking direction (E) for releasing the connection between the locking element (24) and the engagement element (31), characterized in that the first closure part (2) includes a first magnetic element (22) and the second closure part (32) includes a second magnetic element (32), wherein the first magnetic element (22) and the second magnetic element (32) cooperate in a magnetically attracting manner when the locking element (24) and the engagement element (31) are attached to each other, wherein the first magnetic element (22) is arranged on the actuating element (23) and is movable together with the actuating element (23) on actuation of the actuating element (23).

2. The closure device (1) according to claim 1, characterized in that the force transmission element (21) is formed by a traction element that can be subjected to a tensile load.

3. The closure device (1) according to claim 2, characterized in that the force transmission element (21) is configured by a tensile element capable of withstanding tensile loads.

4. The closure device (1) according to any of claims 1 to 3, characterized in that the force transmission element (21) includes an acting portion (211) which at least sectionally is circumferentially extended around the locking element (24).

5. The closure device (1) according to claim 4, characterized in that the acting portion (211) is formed by a loop.

6. The closure device (1) according to any of the preceding claims, characterized in that the first closure part (2) has a housing (20) relative to which the locking element (24) is elastically adjustable.

7. The closure device (1) according to claim 6, characterized in that the actuating element (23) is force-loaded relative to the housing (20) in the direction of a non-actuated position.

8. The closure device (1) according to any of the preceding claims, characterized in that the locking element (24) includes an elastically deformable elasticity portion (243) and at least one leg (244, 245) arranged on the elasticity portion (243), which can be brought in contact with the engagement element (31).

9. The closure device (1) according to claim 8, characterized in that the force transmission element (21) is operatively connected to the at least one leg (244, 245) for loading the at least one leg (244, 245) in the locking direction (E).

10. The closure device (1) according to claim 8 or 9, characterized in that the at least one leg (244, 245) includes a rope groove (246) for receiving the force transmission element (21).

11. The closure device (1) according to any of claims 8 to 10, characterized in that the actuating element (23) includes an actuating portion (231) which on actuation of the actuating element (23) acts on the at least one leg (244, 245) in order to adjust the at least one leg (244, 245) against the locking direction (E) for releasing the connection between the locking element (24) and the engagement element (31).

12. The closure device (1) according to any of the preceding claims, characterized in that the actuating element (23) can be actuated along an actuating direction (B) that is directed perpendicularly to the locking direction (E).

13. The closure device (1) according to any of the preceding claims, characterized in that the locking element (24) includes a locking portion (241) which in the closed position positively is in engagement with the engagement element (31).

14. A system, comprising a useful assembly (4) and a closure device (1) according to any of the preceding claims, wherein the useful assembly (4) is connected to the force transmission element (21).