LOCKING DEVICE WITH ONE WINDING ELEMENT

Description

[0001] The invention relates to a closure device.

[0002] Such a closure device comprises a first closure part and a second closure part, which can be placed against one another along a closing direction, are held against one another in a closed position and can be released from one another to open the closure device.

[0003] Such a closure device is generally used to connect two parts to one another. For example, such a closure device can provide a closure for a container, such as a bag or a rucksack. Such a closure device can also, however, also serve as a closure for a shoe, such as a sports shoe. In general, the closure device can be used to resiliently connect any two assemblies to one another. It may be desirable for such a closure device to not only be used to detachably connect two parts to one another, but also to enable clamping. For example, in the case of a closure for a rucksack or a closure for a shoe, it may be desirable for parts to be able to be placed against one another on the one hand, but also clamped against one another on the other.

[0004] A tensioning device with a tension element that can be wound onto a winding element is described, for example, in WO 2015 / 006616 A1.

[0005] US 2005 / 0098673 A1 describes a winding device in which a winding element is rotatable via an actuating element. The actuating element can be rotated to rotate the winding element for winding up a rope. The actuating element can be adjusted linearly to release the winding element and thereby enable the rope to unwind.

[0006] Another winding device is known from US 2015 / 0076272 A1.

[0007] US 2010 / 308605 A1 describes a closure device in which closure parts are attached to one another and releasably connected in a closed position. Magnetic means assist in the attachment of the closure parts to one another.

[0008] The object of the present invention is to provide a locking device which, on the one hand, enables a detachable connection of assemblies to one another, but, on the other hand, also enables the assemblies to be clamped to one another.

[0009] This object is achieved by an article having the features of claim 1.

[0010] Accordingly, the second closure part has an actuating element with a first engagement device and a winding element with a second engagement device arranged on the actuating element and rotatable in a winding direction for winding up a tension element. The first engagement device and the second engagement device are not engaged with one another in a release position, so that the winding element can be rotated relative to the actuating element. The first engagement device and the second engagement device can be engaged with one another, so that in an engaged position the winding element can be rotated via the actuating element. The first closure part also has a first toothing device, and the second closure part has a second toothing device.The first toothing device and the second toothing device engage with one another in the closed position of the closure device such that the first closure part and the second closure part are held in a form-fitting manner relative to one another along the winding direction. The proposed closure device combines a closure for releasably connecting two parts to one another and a tensioning device. On the one hand, the closure device has two closure parts that can be placed against one another along a closing direction and are held against one another in a closed position, so that assemblies assigned to the closure parts are connected to one another via the closure parts and their hold on one another, and the assemblies can be separated from one another again by separating the closure parts from one another. On the other hand, the second closure part has a winding element on which a tension element can be arranged.The winding element can, for example, be in the form of a cylindrical roll and have a winding groove in which the tension element can be accommodated. By twisting the winding element, the tension element can be wound up and thus tensioned.

[0011] While the first closure part can be arranged on a first assembly, the second closure part can be connected to a second assembly via the tension element, wherein the first assembly and the second assembly can be tensioned towards each other by winding the tension element onto the winding element.

[0012] The tensile element can, for example, be a flexible element that is (exclusively) suitable for transmitting tensile forces. The tensile element can be, for example, a rope, a belt, a strap, a chain, or an (electrically conductive) cable.

[0013] The tension element can, for example, be attached to the winding element at two ends so that the tension element can be wound onto the winding element with both ends by twisting the winding element. However, it is also conceivable and possible for only one end of the tension element to be attached to the winding element so that only this one end can be wound up by twisting the winding element. It is also conceivable and possible for an inner section of the tension element to be arranged on the winding element so that the tension element can be wound up by twisting the winding element. It is also conceivable for several different tension elements to be arranged on the winding element and to be able to be wound up via the winding element.

[0014] In the closure device, the actuating element and the winding element are (releasably) operatively connected to one another via engagement devices. This makes it possible, particularly when the closure device is in the closed position, to rotate the winding element by actuating the actuating element, so that a tension element arranged on the winding element can be wound onto the winding element. In the closed position, the first engagement device of the actuating element and the second engagement device of the winding element are in engagement with one another for this purpose, so that an actuating force is transmitted from the actuating element to the winding element, and the winding element is thus rotated together with the actuating element.

[0015] However, the engagement devices can be released from their engagement to allow relative movement between the actuating element and the winding element. This allows, for example, independent rotation of the winding element relative to the actuating element when the closure device is open, so that when the closure device is open, the pulling element can, for example, be easily unwound from the winding element without the actuating element having to be rotated. This can significantly simplify the actuation of the closure device.

[0016] In the closed position of the closure device, the first engagement device and the second engagement device are preferably in the engaged position and are held in this engaged position. In the closed position of the closure device, the actuating element and the winding element are thus operatively connected to one another, so that rotation of the actuating element leads to rotation of the winding element and thus an actuating force is introduced from the actuating element into the winding element.

[0017] In one embodiment, the engagement devices can be designed such that, in the engaged position, a rigid, resilient, and bidirectional connection is established between the actuating element and the winding element. The actuating element and the winding element can thus only be rotated together in the winding direction and also counter to the winding direction.

[0018] In another embodiment, the engagement between the first engagement device and the second engagement device can also be such that actuating forces are transmitted to the winding element when the actuating element is adjusted in the winding direction, but rotating the actuating element counter to the winding direction does not lead to rotating the winding element, but the actuating element can be rotated counter to the winding direction independently of the winding element.For this purpose, one of the engagement devices or both engagement devices can, for example, have a sawtooth shape such that, upon engagement, when the actuating element is rotated in the winding direction, the engagement devices lock with respect to one another and thus the winding element is rotated together with the actuating element, but upon rotation of the actuating element counter to the winding direction, the engagement devices can slide over one another and, in particular, no (significant) force transmission takes place via the engagement devices.

[0019] The engagement devices are, for example, mounted circumferentially around the closing direction on the one hand on the actuating element and on the other hand on the winding element. The engagement devices are formed on mutually facing surfaces of the actuating element and the winding element.

[0020] In a specific embodiment, the winding element can, for example, have a sawtooth-shaped toothing implementing the second engagement device, while the first engagement device of the actuating element is formed by a sequence of engagement openings arranged one after the other, with which the sawtooth-shaped toothing of the winding element engages in the engagement position.

[0021] To move the engagement devices between the release position and the engagement position, the actuating element and the winding element can be adjusted axially relative to one another, for example, along the closing direction. In the release position, the surfaces of the actuating element and the winding element on which the engagement devices are formed are axially spaced apart from one another along the closing direction, so that the engagement devices do not engage with one another. In the engagement position, however, the surfaces are brought closer together, so that an engagement between the engagement devices exists.

[0022] In one embodiment, the actuating element and the winding element are spring-biased relative to one another, for example in the direction of the release position. For this purpose, a spring element, for example in the form of a spiral spring or in the form of a spring injection-molded onto the actuating element or the winding element, can act between the actuating element and the winding element, which creates a spring-mechanical preload between the actuating element and the winding element in the direction of the release position. If no other forces act between the actuating element and the winding element, in particular when the closure device is in its open position, the actuating element and the carrier element are therefore not in engagement with one another, so that the winding element can be rotated independently of the actuating element, for example to unwind the tension element.

[0023] In addition to the engagement devices, which serve to establish a (releasable) operative connection between the actuating element and the winding element, the first closure part and the second closure part each have a toothing device, which, in the closed position of the closure device, establish a positive hold along the winding direction of the closure parts to one another.

[0024] A positive fit is understood here as meaning that at least certain forces acting between the closure parts along the winding direction can be supported and diverted in a positive fit without causing the closure parts to be displaced relative to each other along the winding direction. Such a positive fit can exist in the winding direction and also counter to the winding direction. However, it is also conceivable and possible for forces to be supported only in one direction, i.e., in the winding direction or counter to the winding direction.

[0025] The positive locking can be designed such that movement of the second closure part in the closed position relative to the first closure part is blocked against the winding direction and / or in the winding direction, i.e., the positive locking cannot be easily overcome, at least not without removing the second closure part from the first closure part. Alternatively, the positive locking can also be designed such that when a certain limit torque is exceeded, which depends on the geometry of the gearing devices, the positive locking can be overcome, so that the second closure part can be rotated relative to the first closure part in the winding direction and / or against the winding direction when a force is applied that exceeds the limit torque.

[0026] The second toothing device (of the second closure part) can be arranged on the actuating element or the winding element. A positive locking in the closed position can thus be established between the actuating element and the first closure part or between the winding element and the first closure part.

[0027] By means of the toothing devices, in particular, a type of freewheel can be provided which enables rotation of the second closure part relative to the first closure part in the winding direction when the closure parts are placed against one another and are thus in the closed position, but blocks movement counter to the winding direction. When the winding element is rotated relative to the first closure part, the second toothing device of the second closure part slides over the first toothing device of the first closure part, such that a ratcheting movement of the second closure part relative to the first closure part in the winding direction is possible. However, when a load is applied counter to the winding direction, toothing elements of the toothing devices engage with one another in such a way that movement is blocked and the second closure part and thus also the winding element are held in the position they have just assumed.

[0028] The toothing devices can, for example, mesh with each other in the axial direction. When the second closure part is rotated in the winding direction relative to the first closure part, the toothing devices slide over each other, for example, by sawtooth-shaped toothing elements sliding onto each other. If the first closure part and the second closure part are mounted so that they can rotate relative to each other and are guided axially against each other, this can be accompanied by a (slight) axial movement of the second closure part relative to the first closure part.

[0029] Alternatively, it can be provided that at least one of the toothing devices has at least one toothing element that can be pushed aside when the second closure part is rotated in the winding direction, for example, transversely to the winding direction. In this case, there is no axial movement between the closure parts; rather, the toothing elements of one of the toothing devices are pushed aside when the second closure part is rotated in the winding direction relative to the first closure part. This can be particularly useful if the first closure part and the second closure part are mechanically locked together in the closed position and cannot be moved axially relative to one another.

[0030] In principle, all types of technically known freewheels can be used.

[0031] In one embodiment, the first closure part has a cylindrical section which, in the closed position, engages in an opening of the winding element for rotatably supporting the winding element on the first closure part. The first toothing device of the first closure part can extend circumferentially around the surface section. In this case, a rotatable mounting of the second closure part, in particular of the winding element of the second closure part, on the first closure part is effected via the cylindrical section, so that the second closure part can be rotated in a simple manner by actuating the actuating element, for example for winding the tension element onto the winding element, when the toothing devices of the first closure part and the second closure part slide over one another.

[0032] A closure device of the type described here can be designed as a purely mechanical closure device, in which the closure parts are placed against one another and mechanically held together in the closed position. Such a mechanical hold can absorb shear forces in a plane transverse to the closing direction and, if necessary, also forces counter to the closing direction, if there is a mechanical locking mechanism between the closure parts.

[0033] The closure device is designed to be magnetic. For this purpose, the first closure part and the second closure part each have at least one magnetic element, which, when the closure parts are placed against each other, are magnetically attracted to close the closure device, thus magnetically assisting the closure of the closure device.

[0034] A magnetic element can be formed by a permanent magnet or by a magnetic armature, for example, made of a ferromagnetic material. For example, one of the closure parts can have a permanent magnet that interacts magnetically with a magnetic armature of the other closure part. However, it is also conceivable for both closure parts to each have a permanent magnet or an arrangement of several permanent magnets that face each other with opposite poles when the closure parts are placed against each other, thus supporting the attachment through magnetic attraction.

[0035] In particular, the toothing devices of the closure parts can be pulled into engagement with one another via magnetic elements that exert a magnetic attraction between the first closure part and the second closure part, thus magnetically supporting the attachment of the closure parts to one another, so that an engagement between the toothing devices exists in the closed position. The magnetic elements can also ensure that the engagement devices of the actuating element and the winding element are engaged with one another in the closed position.

[0036] For example, a magnetic element can be arranged on the actuating element, which interacts with an associated magnetic element on the first closure part when the closure device is closed. Due to the magnetic attraction force, the engagement between the engagement devices of the actuating element and the winding element can also be established in the closed position by the actuating element being drawn toward the winding element due to the magnetic effect on the actuating element.

[0037] If there is a spring preload between the actuating element and the winding element in the direction of the release position of the engagement devices, the magnetic attraction force in the closed position preferably exceeds the preloading spring force, so that the engagement between the engagement devices of the actuating element and the winding element can be established due to the magnetic attraction force.

[0038] The first closure part and the second closure part are mechanically locked together in the closed position to hold the closure parts against each other in the closing direction. For this purpose, one of the closure parts can, for example, have a locking device with at least one adjustable locking element which, in a locked position, engages in a locking engagement of the other closure part and thereby holds the closure parts together in the opposite direction to the closing direction. The locking device thus creates a mechanical lock between the closure parts when the closure parts are placed against each other. The locking device holds the closure parts together against a load directed opposite to the closing direction, so that the closure parts cannot be removed from each other without releasing the lock.

[0039] Preferably, the locking device automatically moves into the locked position when the closure parts are placed against one another. When the closure parts are placed against one another, the closure parts thus automatically lock together, ensuring that the closure parts are held together in the closed position. The second closure part can, if necessary, be rotatable in the winding direction relative to the first closure part despite the locking mechanism, so that the tension element can be wound onto the winding element when the closure parts are placed against one another.

[0040] The locking device can have one or more locking elements. These are, for example, spring-loaded toward their locked position, so that when the closure parts are placed against each other, the locking elements preferably automatically engage with the corresponding locking engagement of the other closure part.

[0041] In one embodiment, the locking device has an engagement element that engages with the other closure part in the closed position and on which the at least one locking element is arranged. If the locking device is arranged, for example, on the second closure part, the engagement element engages with an associated opening in the closed position, for example, in a cylinder section of the first closure part that supports the winding element. One or more locking elements are arranged on the engagement element, so that the locking between the closure parts in the closed position is established via the engagement element.

[0042] In one embodiment, if the locking device is formed on the second closure part, the engagement element is axially adjustable relative to the actuating element along the closing direction. The actuating element can thus be axially adjusted relative to the engagement element by a certain distance, which in particular enables the second closure part to execute a compensating axial relative movement to the first closure part when rotated relative to the first closure part and when the toothing devices slide over one another, while maintaining a locking connection between the second closure part and the first closure part.

[0043] In this case, the engagement element is preferably spring-biased relative to the actuating element, for example via a compression spring which presses the actuating element and thus also the winding element in the direction of the first closure part when the closure device is in the closed position.

[0044] In order to release the locking between the closure parts and to separate the closure parts from one another to open the closure device, the locking device preferably has an operating element that can be actuated to disengage the at least one locking element from the locking engagement. A user can, for example, press the operating element, which is adjustably arranged on the engagement element, in order to move or at least release the locking elements arranged on the engagement element, so that the locking of the locking device can be released.

[0045] The operating element is guided axially along the closing direction on the engagement element, for example. The engagement element can be designed, for example, as a bushing within which the operating element is accommodated so that it can be displaced axially along the closing direction.

[0046] In one embodiment, a gear, for example a planetary gear, can also be provided between the actuating element and the winding element, so that force is introduced from the actuating element into the winding element via a gear and thus in a reduced or stepped-up manner.

[0047] The actuating element can be actuated manually by rotating the actuating element. However, designs in which an electric motor is provided to drive the actuating element are also conceivable and possible. Such an electric motor can, for example, be fixedly arranged on an assembly connected to the first closure part and can, for example, via a suitable gear element, such as a drive worm, engage with a toothing of the actuating element when the closure device is in its closed position. The actuating element can thus be rotated via the electric motor.

[0048] Alternatively, it is conceivable and possible to drive the toothing device of the first closure part by an electric motor in order to rotate the winding element by rotating the toothing device of the first closure part.

[0049] In one embodiment, one or more electrical contact elements can be arranged on the first closure part and on the second closure part, so that when the closure device is closed, an electrical contact is established between the closure parts.

[0050] In a further embodiment, the closure device can have a winch output element, for example in the form of an eyelet, which can be arranged on the second closure part and designed as an additional component to the winding element and the actuating element. The winch output element can, for example, be freely rotatable relative to the winding element and / or the actuating element and guides the tension element with respect to the winding element so that the tension element enters the winding element in a defined manner. This prevents uncontrolled unwinding of the tension element from the winding element and, in particular, prevents the tension element from becoming knotted during unwinding.

[0051] The closure device described here enables a detachable connection of closure parts in combination with a tensioning option for a tension element. This makes it possible, for example, to pre-tension the tension element when the closure parts are separated, then close the closure device, and then, in the closed position of the closure device, to wind up and re-tension the tension element by turning the winding element. For example, in a shoe, the tension element (like a shoelace) can be pre-tensioned manually by pulling on the tension element when the closure device is separated, and then re-tensioned when the closure device is closed.

[0052] Furthermore, separating the closure parts allows the tension element connected to the winding element to be wrapped around an object in order to secure one assembly to another using the closure device. For example, with the closure device open, the tension element can be wrapped around a mast or a frame, such as a bicycle frame, to then close the closure device and tension the tension element, thus allowing an assembly to be secured to the mast or frame.

[0053] A closure device of the type described here can be used in a wide variety of ways. For example, a closure device of the type described here can be used in bags or other containers such as backpacks, boxes, or containers, in shoes (especially sports shoes such as hiking boots, ski boots, or the like), in helmets, especially sports helmets, or in medical aids such as medical support splints or the like.

[0054] For example, a closure device of the type described here can be used to tighten straps on bags or purses (so-called compression straps). A belt or hip belt of a backpack or school bag can be closed and tightened using such a closure device. And such a closure device can be used on a cable reel for winding up an electrical cable, such as a headphone or charging cable.

[0055] In a helmet, a strap can be tightened via a fastening device of the type described here, or an object can be attached to the helmet, for example protective goggles (such as ski goggles) or the like.

[0056] Such a locking device can also be used to store and secure accessories or bags in or on vehicles (bicycles, cars, trucks, ships, aircraft, etc.), for example as a tensioning device on a bicycle luggage rack.

[0057] Specifically, such a locking device can be used, for example, on a bracket that can be clamped around a bicycle frame to secure an assembly, for example a drinking bottle or a container, to the bicycle frame.

[0058] In addition, such a locking device can be used to tension tarpaulins and cloths of any kind, for example to tension tent tarpaulins or to tension a sunshade.

[0059] Military applications are also conceivable and possible. For example, a locking device can be used to cock and store weapons and ammunition.

[0060] A closure device of the type described can also be used in a tourniquet ligation system to tie off heavily bleeding wounds in a patient.

[0061] 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. 1A, 1B: Views of a first embodiment of a closure device; Fig. 2A, 2B: Exploded views of the closure device; Fig. 3A: A perspective view of the closure device in a closed position; Fig. 3B: A side view of the arrangement according to Fig. 3A ; Fig. 3C a top view of the closure device; Fig. 3D a sectional view along the line AA according to Fig. 3C ; Fig. 3E a sectional view along the line BB according to Fig. 3C ; Fig. 3Fine enlarged view of a section of the view according to Fig. 3E ; Fig. 4A a view of the closure device in an open position; Fig. 4B a side view of the arrangement according to Fig. 4A ; Fig. 4C a top view of the closure device; Fig. 4D sectional view along the line GG according to Fig. 4C ; Fig. 4E a sectional view along the line II according to Fig. 4C ; Fig. 4Fine enlarged view of a section of the view according to Fig. 4E ; Fig. 5A a plan view of the closure device in the open position; Fig. 5B a sectional view along the line QQ according to Fig. 5A ; Fig. 5C an enlarged view of a section of the view according to Fig. 5B ; Fig. 6A, 6B exploded views of another embodiment of a closure device; Fig. 7A a perspective view of the closure device in a closed position; Fig. 7B a side view of the arrangement according to Fig. 7A ; Fig. 7C a top view of the closure device; Fig. 7D a sectional view along the line AA according to Fig. 7C ; Fig. 8A a perspective view of the locking device when rotating one locking part to the other; Fig. 8B a side view of the arrangement according to Fig. 8A ; Fig. 8C a top view of the closure device; Fig. 8D sectional view along the line BB according to Fig. 8C ; Fig. 9A a perspective view of the closure device during opening; Fig. 9B a side view of the arrangement according to Fig. 9A ; Fig. 9C a top view of the closure device; Fig. 9D sectional view along the line CC according to Fig. 9C ; Fig. 10A a perspective view of the closure device in an open position; Fig. 10B a side view of the view according to Fig. 10A ; Fig. 10C a top view of the closure device; Fig. 10D sectional view along the line DD according to Fig. 10C ; Fig. 11A a perspective view of another embodiment of a closure device, in a closed position of the closure device; Fig. 11B a side view of the arrangement according to Fig. 11A ; Fig. 11C a top view of the closure device; Fig. 11D sectional view along the line AA according to Fig. 11C ; Fig. 11E a sectional view of a modified embodiment along the line AA according to Fig. 11C ; Fig. 12A a schematic view of an embodiment of gearing devices; Fig. 12B a perspective view of the gearing devices according to Fig. 12A ; Fig. 13A a schematic view of another embodiment of gearing devices; Fig. 13B a ​​perspective view of the gearing devices according to Fig. 13A ; Fig. 14A a schematic view of yet another embodiment of gearing devices; Fig. 14B a perspective view of the gearing devices according to Fig. 14A ; Fig. 15A a schematic view of yet another embodiment of gearing devices; Fig. 15B a perspective view of the gearing devices according to Fig. 15A ; Fig. 16A a schematic view of yet another embodiment of gearing devices; Fig. 16B a perspective view of the gearing devices according to Fig. 16A ; Fig. 17A a view of an embodiment of a closure device, showing in particular a toothing device on the first closure part; Fig. 17B a view of the embodiment according to Fig. 17A , representing a toothing device on the second closure part; Fig. 17C a plan view of the closure device; Fig. 17D a sectional view along the line AA according to Fig. 17C ; Fig. 18 a view of an embodiment of an application of the closure device for tightening a shoe; Fig. 19 a view of another embodiment of an application of the closure device for tightening a shoe; Fig. 20 a view of yet another embodiment of an application of the closure device for tightening a shoe; Fig. 21 a view of the embodiment according to Fig. 20 when tightening the shoe; Fig. 22 a view of yet another embodiment of an application of the fastening device for tightening a shoe; Fig. 23 a view of yet another embodiment of an application of the fastening device for tightening a shoe; Fig. 24 a view of yet another embodiment of an application of the fastening device for tightening a shoe; Fig. 25 a view of an embodiment of the fastening device for tightening a trouser leg; Fig. 26 a view of an embodiment of an application of the fastening device for tightening a trouser leg to a shoe; Fig. 27 a view of another embodiment of an application of the fastening device for tightening a trouser leg to a shoe; Fig. 28 a view of an embodiment of an application of the fastening device for closing a garment; Fig. 29 a view of the embodiment according to Fig. 28 , with the garment closed; Fig. 30 a view of another embodiment of an application of the closure device for closing a garment; Fig. 31 a view of an embodiment of an application of the closure device for closing and tensioning a medical device; Fig. 32 a view of the embodiment according to Fig. 31 , in the closed and tensioned state; Fig. 33 a view of another embodiment of an application of the closure device for closing and tensioning a medical device; Fig. 34 a view of the embodiment according to Fig. 33 in closed state; Fig. 35 a view of an embodiment of an application of the closure device for closing and tightening another medical aid; Fig. 36 a view of an embodiment of an application of the closure device for closing and tightening a strap of a helmet; Fig. 37 a view of the embodiment according to Fig. 36 with the strap closed; Fig. 38 a view of an embodiment of an application of the closure device for closing and tightening a strap of a helmet; Fig. 39 a view of the embodiment according to Fig. 38 , with the strap closed; Fig. 40 a view of an embodiment of an application of the closure device for hanging a lamp; Fig. 41 a view of an embodiment of an application of the closure device for hanging a picture; Fig. 42 a view of an embodiment of an application of the closure device for connecting a lamp to a socket; Fig. 43 a view of the embodiment according to Fig. 42 , connected to a socket; Fig. 44 a view of the embodiment according to Fig. 43 , with the cable taut; Fig. 45 a view of an embodiment of an application of the closure device for tensioning a roller blind; Fig. 46 a view of another embodiment of an application of the closure device for tensioning a roller blind; Fig. 47 a view of an embodiment of an application of the closure device for tensioning a strap on a piece of luggage; Fig. 48 a view of an embodiment of an application of the closure device for tensioning a tension element on a backpack; Fig. 49 a view of an embodiment of an application of the closure device for fastening an object to a bicycle; Fig. 50 a view of another embodiment of an application of the closure device for fastening an object to a bicycle; Fig. 51 a view of an embodiment of an application of the closure device for securing an object in the trunk of a motor vehicle; Fig.52 a view of a further embodiment of a closure device with a tension element in the form of a belt; Fig. 53 a front view of the closure device according to . Fig. 52 ; Fig. 54 a side view of the closure device; Fig. 55 a top view of the closure device; Fig. 56 a sectional view along the line AA according to Fig. 55 ; Fig. 57A a view of the closure device for connecting two belt ends together; Fig. 57B a view of the closure device in the closed state; Fig. 58 a view of another embodiment of a closure device; Fig. 59 a view of a further embodiment of a closure device for connecting two belt ends together; Fig. 60 a view of the closure device in the closed position; Fig. 61A a plan view of the closure device, with a tensioning lever in a position for attaching the closure parts to one another; Fig. 61B an enlarged view in section A according to Fig. 61A ; Fig. 62A a plan view of the locking device when tensioning a tension element; and Fig. 62B an enlarged view in section A according to Fig. 62A .

[0062] Fig. 1A , 1B bis 5A-5C show an embodiment of a closure device 1 in which 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.

[0063] As can be seen from the exploded views according to Fig. 2A and 2B As can be seen, the first closure part 2 has a base body 20 on which a cylindrical section 201 is formed. A toothing 25, whose teeth have a sawtooth shape, runs around the cylindrical section 201. A magnetic element 23 is also arranged on the base body 20.

[0064] The second closure part 3 has an actuating element 34 in the form of a handle and a winding element 35, which forms a groove 353 axially delimited by annular collars 352, 354, in which a pulling element 4 can be received for winding onto the winding element 35. A magnetic element 33 is attached to the actuating element 34, which interacts in a magnetically attractive manner with the magnetic element 23 on the first closure part 2.

[0065] On a side facing the first closure part 2, a toothing 351 is formed on the winding element 35. When the closure parts 2, 3 are placed against each other, this toothing 351 of the winding element 35 engages with the toothing 25 on the base body 20 of the first closure part 2, as shown in Fig. 3A-3F is shown.

[0066] When the closure parts 2, 3 are attached to one another, the cylinder section 201 engages in a central opening 350 of the winding element 35, so that the winding element 35 is rotatably and axially movably mounted on the first closure part 2.

[0067] Both the toothing 351 of the winding element 35 and the toothing 25 of the first closure part 2 have a sawtooth shape. This allows, in the closed position of the closure device 1, the second closure part 3 with the winding element 35 and the actuating element 34 to be rotated in a winding direction V relative to the first closure part 2, wherein the teeth of the toothings 25, 351 slide onto one another and are moved over one another, with the closure parts 2, 3 axially deflected relative to one another. The toothings 25, 351 thus provide a type of freewheel which, when the closure parts 2, 3 are attached to one another, enables the winding element 35 to be rotated in the winding direction V in order to tension a tension element 4 arranged on the winding element 35, but blocks a movement counter to the winding direction V, so that the tension element 4 cannot be unwound counter to the winding direction V when the closure parts 2, 3 are attached to one another.

[0068] The teeth of the gears 25, 351 form, for example, Fig. 3E und 3F As can be seen, each has an undercut which causes the toothings 25, 351 to engage with one another in a locking manner when the closure parts 2, 3 are loaded against one another against the winding direction V, thus preventing a rotational movement of the winding element 35 against the winding direction V relative to the first closure part 2. The engagement is rotationally fixed, resilient, and self-reinforcing due to the undercut tooth flanks of the toothings 25, 351 which interact when loaded against the winding direction V.

[0069] The winding element 35 is rotatably mounted on the actuating element 34 and is held on the actuating element 34 by means of retaining elements 342 that surround the annular collar 354 and protrude inwardly from a base surface 340 of the actuating element 34. The retaining elements 342 surround the annular collar 354 and thereby establish a connection between the winding element 35 and the actuating element 34.

[0070] The actuating element 34 and the winding element 35 can also be coupled via engagement devices 345, 355 such that the winding element 35 can be moved, depending on the position, together with the actuating element 34 or independently of the actuating element 34. A first engagement device 345 is formed in the base surface 340 in the form of openings arranged circumferentially around the closing direction X, which can be brought into operative connection with a second engagement device 355 formed on the annular collar 354 and protruding axially from the annular collar 354 in order to couple the actuating element 34 to the winding element 35 for force transmission in the winding direction V.

[0071] A cover element 32 is arranged on the actuating element 34, which closes the actuating element 34 on a side facing away from the winding element 35 and is locked to the actuating element 34 for this purpose.

[0072] The actuating element 34 encloses a receiving space with a circumferential side wall 344, within which the winding element 35 is received with its annular collar 354 and held axially displaceably. A cylindrical projection 341 protrudes centrally from the base surface 340, engaging the central opening 350 of the winding element 35 and thereby supporting the actuating element 34 and the winding element 35 so that they can rotate about the closing direction X.

[0073] When the closure parts 2, 3 are placed against each other, due to the magnetically attractive interaction of the magnetic elements 23, 33, the toothing 351 on the inside of the opening 350 of the winding element 35 engages with the toothing 25 around the cylinder section 201, which also engages with the opening 350 of the winding element 35, as shown in Fig. 3A bis 3F is shown. Because, due to the magnetic attraction force between the magnetic elements 23, 33, the actuating element 34 is also drawn towards the cylinder section 201 of the body 20 of the first closure part 2 and thus with its base surface 340 is brought closer to the annular collar 354 of the winding element 35, the engagement devices 345, 355 of the actuating element 34 and the winding element 35 engage with each other, so that the actuating element 34 and the winding element 35 come into a functional operative connection with each other, as shown in the sectional views according to Fig. 3D bis 3F is shown.

[0074] Due to the operative connection between the actuating element 34 and the winding element 35 in the closed position, when the actuating element 34 is rotated in the winding direction V, the winding element 35 is moved together with the actuating element 34 and thus rotated about the closing direction X, because an actuating force is transmitted to the winding element 35 via the engagement of the engagement devices 345, 355. In this case, the toothings 25, 351 slide over one another, so that the winding element 35 is rotated toward the first closure part 2 and a tension element 4 is thus wound onto the winding element 35.

[0075] Due to the sawtooth-shaped, undercut design of the teeth 25, 351, a load introduced via the tension element 4 against the winding direction V cannot lead to a reverse rotation of the winding element 35. This is prevented by the meshing of the teeth 25, 351.

[0076] As can be seen particularly from the sectional views according to Fig. 3E und 3F As can be seen, the engagement device 355 of the winding element 35 is sawtooth-shaped, with sawtooth-shaped teeth with an oblique tooth flank and a nearly vertical tooth flank. This sawtooth-shaped toothing 355 engages, in the engaged position, in the openings forming the engagement device 345 in the base surface 340 of the actuating element 34. This engagement is such that actuating forces in the winding direction V are introduced from the actuating element 34 into the winding element 35, and the winding element 35 is thus moved together with the actuating element 34 in the winding direction V. However, upon rotation of the actuating element 34 counter to the winding direction V, the engagement devices 345, 355 can slide over one another and thus allow a relative movement of the actuating element 34 counter to the winding direction V to the winding element 35.

[0077] If the closure parts 2, 3 are to be released from each other, the second closure part 3 can simply be pulled off the first closure part 2 in a release direction L, opposite to the closing direction X, as shown in Fig. 4A bis 4F is shown, whereby the teeth 25, 351 are disengaged from each other and the closure parts 2, 3 are separated from each other.

[0078] Because the magnetic attraction between the magnetic elements 23, 33 is thereby canceled, the engagement devices 345, 355 disengage from one another, so that the winding element 35 can be rotated independently of the actuating element 34. This enables, for example, free unwinding of a tension element 4 arranged on the winding element 35 when the closure device 1 is open.

[0079] It can be provided that the engagement devices 345, 355 of the actuating element 34 and the winding element 35 are disengaged when the closure device 1 is opened, for example, by the effect of gravity. In an advantageous embodiment, however, the actuating element 34, as shown in Fig. 5A bis 5C is shown, via spring elements 343, which are arranged on the inside of the base surface 340 and in the illustrated embodiment are formed by integrally formed spring projections, relative to the winding element 35 in the direction of the release position, in which the engagement devices 345, 355 are not in engagement with one another, spring-preloaded, so that the actuating element 34 and the winding element 35 automatically and reliably disengage from one another when the closure device 1 is opened and thus the winding element 35 can be rotated independently of the actuating element 34 when the closure device 1 is open.

[0080] Fig. 6A , 6B bis 10A-10D show another embodiment which, with regard to the toothings 25, 351 acting between the first closure part 2 and the winding element 35 and with regard to the engagement devices 345, 355 acting between the winding element 35 and the actuating element 34 of the second closure part 3, is identical to the one described above with reference to Fig. 1A , 1B bis 5A-5C described embodiment, so that reference should be made to the preceding explanations in this regard.

[0081] In addition, the embodiment according to Fig. 6A , 6B bis 10A-10D a locking device 36 which is arranged on the second closure part 3 and serves to lock the closure parts 2, 3 together in the closed position in such a way that the second closure part 3 is held in a locking manner against the closing direction X and thus in a form-fitting manner on the first closure part 2.

[0082] The use of such a locking device 36 enables a non-magnetic design of the closure device 1. In principle, magnetic elements can thus be dispensed with in the closure device 1. However, it is also conceivable and possible to use magnetic elements in addition to the locking device 36, as in the embodiment according to Fig. 1A , 1B bis 5A-5C are present.

[0083] The locking device 36 has an engagement element 38 which - as can be seen from Fig. 6B in conjunction with Fig. 7D can be seen - is received by an annular collar 381 in an axially movable manner in a receiving space 322 within the cover element 32 attached to the actuating element 34 and is spring-loaded by a spring element 384 in the form of a spiral spring relative to the base surface 340 of the actuating element 34. On a cylindrical body 380 extending from the annular collar 381, diametrically opposite receiving openings 382 are formed, in which locking elements 385 in the form of balls are received, which serve to lock the closure device 1 ( Fig. 7A bis 7D ) to engage in a locking engagement 202 in the form of an annular groove running around the inside of an opening 200 of the cylinder section 201 of the first closure part 2, so that, as can be seen from Fig. 7D As can be seen, there is a locking mechanism between the engagement element 38, which engages in the opening 200 of the cylinder section 201 in the closed position, and the cylinder section 201, and the closure parts 2, 3 are locked together by this locking mechanism.

[0084] Within a central opening 383 of the engagement element 38, an operating element 37 is guided axially along the closing direction X. The operating element 37 has a cylindrical shape, is elastically supported in the closed position on the first closure part 2 via a spring element 374 lying in an opening 373 in the form of a blind hole, and is also in contact with the engagement element 38 via an end-side annular collar 371 in a way that limits its travel when it is not actuated relative to the engagement element 38.

[0085] As from Fig. 6A , 6B in conjunction with Fig. 7D As can be seen, the operating element 37 has on its outer circumferential surface two diametrically opposed release openings 372, which in the closed position are arranged at an axially different height to the locking elements 385, as can be seen from Fig. 7D can be seen, so that the locking elements 385 are in contact with the outer peripheral surface of the cylindrical body 370 of the operating element 37 and are held in locking engagement with the locking engagement 202 on the inside of the cylinder section 201.

[0086] In the closed position ( Fig. 7A bis 7D ) the actuating element 34 is pressed in the direction of the first closure part 2 due to the spring preload of the spring element 384, and by contact of the base surface 340 with the annular collar 354 of the winding element 35, the winding element 35 is pressed into engagement with the toothing 25 of the first closure part 2, as can be seen from Fig. 7D can be seen. In the closed position, the second closure part 3 is thus held in a locking manner on the first closure part 2, with existing engagement between the engagement devices 345, 355 of the actuating element 34 and the winding element 35 and also with toothed engagement between the winding element 35 and the first closure part 2.

[0087] If, in the closed position of the closure device 1, the actuating element 34 and thus, due to the engagement of the engagement devices 345, 355, the winding element 35 together with the actuating element 34 are rotated in the winding direction V, the toothings 25, 351 slide over each other, which causes a (minor) axial movement of the winding element 35 and, above it, of the actuating element 34, as shown in Fig. 8A bis 8D is shown. Because the engagement element 38 of the locking device 36 is held axially relative to the cylinder section 201 of the first closure part 2 via the locking elements 385, the axial deflection of the winding element 35 and the actuating element 34 takes place against the spring preload of the spring element 384, as shown in Fig. 8D is shown.

[0088] After the actuating element 34 and the winding element 35 have been rotated, the toothings 25, 351 then come into engagement with one another again due to the spring preload of the spring element 384, with the annular collar 352 resting on the body 20 of the first closure part 2 (corresponding to the position according to Fig. 7A bis 7D ).

[0089] To release the closure parts 2, 3 from each other, a user can press the operating element 37 in an actuating direction D into the engagement element 38, as shown in Fig. 9A bis 9D As a result, the body 370 of the operating element 37 is adjusted axially along the closing direction X within the engagement element 38, so that the release openings 372 reach the same axial height as the locking elements 385 and the locking elements 385 can thus deflect radially inwards, as shown in Fig. 9D In this way, the locking engagement between the engagement element 38 and the cylinder section 201 is released, so that the closure parts 2, 3 can be removed from each other opposite to the closing direction X, namely in the release direction L.

[0090] Fig. 10A bis 10D show the closure device 1 in its open position. In the open position, the closure parts 2, 3 are separated from each other, whereby the actuating element 34 and the winding element 35 with their engagement devices 345, 355 are disengaged due to the effect of gravity or due to a spring preload, so that the winding element 35 can be rotated independently of the actuating element 34 and thus a tension element arranged on the winding element 35 can be unwound if necessary.

[0091] To close the closure device 1 again, the second closure part 3 can be placed in the closing direction X against the first closure part 2, whereby the engagement element 38 engages with the opening 200 of the cylinder section 201 and the locking elements 385 engage in a locking manner in the locking engagement 202 in the form of the circumferential groove within the cylinder section 201. As a result, the toothings 25, 351 also engage with one another, and the closure device 1 takes up the Fig. 7A bis 7D shown closed position.

[0092] Fig. 11A bis 11E show two compared to the embodiment according to Fig. 6A , 6B to 10A-10D modified embodiments which are designed to be magnetic on the one hand and non-magnetic on the other.

[0093] In their external appearance, the two examples are similar (see Fig. 11A bis 11C ), but are (slightly) different in their internal design, as can be seen from the views according to Fig. 11D und 11E results.

[0094] In both embodiments, the locking device 36 has an engagement element 38, on which a continuous bore 387 extending transversely to the closing direction X is formed, in which two spherical locking elements 385 are arranged and prestressed against each other via a spring element 386. When the closure parts 2, 3 are placed against each other, the engagement element 38 engages with the cylinder section 201, and the locking elements 385 lock with the locking engagement 202 on the inside of the opening 200 of the cylinder section 201, as can be seen from Fig. 11D und 11E is evident.

[0095] The locking mechanism is held in the closed position by the spring preload via the spring element 386. If the locking mechanism is to be released, the second closure part 3 can be pulled off the first closure part 2 in the opposite direction to the closing direction X with sufficient force, whereby the locking elements 385 are automatically displaced radially inward by running onto the upper edge of the groove-shaped locking engagement 202 and thus disengaged from the locking engagement 202. The locking mechanism between the closure parts 2, 3 can thus be released without separate actuation of the engagement element 38.

[0096] While the embodiment according to Fig. 11D is purely mechanically designed, the modified embodiment according to Fig. 11E magnetically formed in that a magnetic element 23 is arranged on the body 20 of the first closure part 2 and also a magnetic element 33 is arranged on the body 380 of the engagement element 38, as can be seen from the sectional view according to Fig. 11E The closure parts 2, 3 thus also interact magnetically, which facilitates the attachment of the closure parts 2, 3.

[0097] Furthermore, the embodiments are in accordance with Fig. 11D und 11E functionally identical to the previously described embodiments, so that reference should be made to the above in this regard.

[0098] In the embodiments described above, the toothing devices 25, 351 on the side of the first closure part 2 and the second closure part 3 can fundamentally be designed quite differently in order to produce a positive hold (loadable at least up to a certain limit torque) between the closure parts 2, 3 in the closed position.

[0099] In the embodiment according to Fig. 1A , 1B bis 5A-5C the toothing devices 25, 351 are designed with undercuts such that a movement of the winding element 35 against the winding direction V is blocked in the closed position. However, this is only an example and can in principle also be designed differently, as will be shown below with reference to Fig. 12A , 12B bis 16A , 16B should be explained.

[0100] Fig. 12A , 12B bis 16A , 16Bshow different embodiments of toothing devices 25, 351, which differ in the geometry of their teeth and can be used in a closure device 1 of the type described here.

[0101] Thus, in the embodiment according to Fig. 12A, 12B The teeth of each toothing device 25, 351 have a tooth flank in the form of a run-up slope 250 extending obliquely to the closing direction X, as well as an approximately perpendicularly extending tooth flank 251 with a projection element 252 formed thereon that projects along the winding direction V. When a load is applied in a loading direction B opposite to the winding direction V, the projection elements 252 of the teeth of the toothing devices 25, 351 engage with one another, so that movement of the toothing devices 25, 351 in the loading direction B (opposite the winding direction V) is blocked. The winding element 35 can therefore not be rotated in the loading direction B opposite to the winding direction V towards the first closure part 2 when the closure device 1 is in its closed position.

[0102] In the embodiment according to Fig. 12A, 12B In addition, a locking lug 253 is formed on the projection element 252 of each tooth (or at least part of the teeth) of the toothing device 351, which can, for example, engage in a locking manner with an associated locking recess on the projection element 252 of an associated tooth of the toothing device 25 in order to additionally lock the locking engagement of the teeth of the toothing devices 25, 351 when loaded in the loading direction B.

[0103] The embodiment according to Fig. 13A, 13B is similar to the embodiment according to Fig. 12A, 12B , apart from the fact that in the embodiment according to Fig. 13A, 13B on the projection elements 252 of the teeth of the toothing device 351 no locking lugs 253 as in the embodiment according to Fig. 12A, 12B are provided.

[0104] In the embodiment according to Fig. 14A, 14B The toothing devices 25, 351 are designed as sawtooth toothings. The teeth of the toothing devices 25, 351 each have a tooth flank in the form of a run-up slope 250 and a vertically extending tooth flank 251. Loading of the toothing devices 25, 351 in a loading direction B opposite the winding direction V is blocked.

[0105] In a Fig. 15A, 15B In the embodiment shown, the teeth of the gearing devices 25, 351 are, in comparison to the embodiment according to Fig. 14A, 14B , undercut on the tooth flanks 251, are thus positioned obliquely to the closing direction X. This corresponds to the embodiment according to Fig. 1A , 1B bis 5A-5C . When the toothing devices 25, 351 are loaded in a load direction B opposite to the winding direction V, the toothing devices 25, 351 are locked relative to one another.

[0106] In the embodiments according to Fig. 12A, 12B, 13A, 13B and 15A, 15B the engagement of the toothing devices 25, 351 is self-reinforcing when loaded in the loading direction B. The closure parts 2, 3 are thus pulled towards each other in the closing direction X when loaded. Due to the positive locking via the projection elements 252 or due to the undercut, the closure device 1 is also locked against opening counter to the closing direction X. In particular, loading forces can also be absorbed and diverted which do not act purely tangentially but with a component counter to the closing direction X.

[0107] In the embodiment according to Fig. 16A, 16Bthe teeth of the toothing devices 25, 351 on both tooth flanks 250, 251 are inclined so that they form a run-up slope and the toothing devices 25, 351, with sufficient force between the toothing devices 25, 351, can slide over each other in the winding direction V and also against the winding direction V, with axial deflection of the toothing devices 25, 351 to each other. In the embodiment according to Fig. 16A, 16B The toothing devices 25, 351 are thus neither locked to one another in the winding direction V nor against the winding direction V, but can slide over one another in a ratcheting manner if the torque acting between the toothing devices 25, 351 is sufficiently large.

[0108] In a Fig. 17A-17DIn the embodiment shown, the teeth of the toothing devices 25, 351 extend at their tooth backs obliquely to the winding direction V and also to the closing direction X, as in the case of a bevel gear, which can enlarge the surfaces of the teeth of the toothing devices 25, 351 which are in engagement with one another and supported against one another when loaded counter to the winding direction V.

[0109] Fig. 18 to 51 show different embodiments of applications of a closure device 1, which can be designed according to an embodiment of the type described above.

[0110] In the embodiment according to Fig. 18 The closure device 1 serves to close and tighten a shoe 5. For this purpose, the closure part 3 can be attached to the closure part 2 on a flap of the shoe 5 in order to tighten a tension element 4 in the form of a shoelace.

[0111] Fig. 19shows another embodiment of a shoe 5, which differs in the winding of the tension element 4 in the form of the shoelace from the embodiment according to Fig. 18 differs.

[0112] In the embodiment according to Figs. 18 and 19 One end of the tension element 4 in the form of a shoelace is fixed to the closure part 3 of the closure device 1 and can be tensioned by rotating the actuating element 34 together with the winding element 35 relative to the closure part 2. Tensioning is also possible manually by pulling on the closure part 3 before securing the closure part 3 to the closure part 2, thereby tensioning the tension element 4 in the form of a shoelace.

[0113] In the embodiment according to Figs. 20 and 21Two ends of the tension element 4 in the form of a shoelace, which in this case is wound as a loop, are connected to the closure part 3 of the closure device 1, so that by rotating the closure part 3 relative to the closure part 2, the tension element 4 in the form of a shoelace can be wound up with two ends and thus tensioned. As in Fig. 21 As shown, before arranging the closure part 3 on the closure part 2, it is possible to manually tension the tension element 4 by pulling on the tension element 4 with one hand 6.

[0114] In the embodiment according to Fig. 22Two ends of the tension element 4 in the form of the shoelace are connected to the closure part 3 of the closure device 1 and can thus be wound up by rotating the closure part 3 relative to the closure part 2 to close and tighten the shoe 5. The tension element 4 in the form of the shoelace is laid around tensioning elements 50, so that the shoe 5 can be tightened by winding the tension element 4 onto the winding element 35 of the closure part 3.

[0115] Fig. 23 shows another embodiment in which the tension element 4 is laid around tensioning elements 50 and is arranged with one end on the closure part 3 of the closure device 1 and can thus be tensioned over the closure device 1.

[0116] In the embodiment according to Fig. 24the tension element 4 in the form of the shoelace is (also) laid around the sole 51 of the shoe 5 and connected at one end to the closure part 3 of the closure device 1, so that the shoe 5 can be closed and tightened via the closure device 1.

[0117] In the Fig. 25 In the exemplary embodiment shown, the fastening device 1 serves to fasten a trouser leg 52 to a shoe 5 via a tension element 4 in the form of a band. For this purpose, the tension element 4 extends around the trouser leg 52 and is fixed to the shoe 5 via the fastening device 1, so that by rotating the fastening part 3 relative to the fastening part 2, the trouser leg 52 can be tensioned relative to the shoe 5.

[0118] Another example shows Fig. 26. In this embodiment, a trouser leg 52 can in turn be braced against a shoe by a tension element 4, which extends through eyelets in the trouser leg 52, being braced against the shoe 5 via the closure device 1.

[0119] Also in the embodiment according to Fig. 27 a trouser leg 52 can be tensioned relative to a shoe, wherein in this case the tension element 4 extends in the form of a band around the sole 51 of the shoe 5 and can be tensioned to the shoe 5 via the closure device 1.

[0120] In the embodiment according to Figs. 28 and 29The closure device 1 serves to close and tighten a garment 5, for example a vest or a jacket. The tension element 4 in the form of a band or a rope is fixed to a fastening point 53 on the garment 5 and can be laid around tensioning elements 50 on both sides of an opening slit of the garment 5 in order to close the garment 5 in this way, as shown in Fig. 29 is shown. By arranging the closure part 3 on the closure part 2 and by rotating the closure part 3 relative to the closure part 2, the garment 5 can then be tensioned.

[0121] Also in the embodiment according to Fig. 30The closure device 1 serves to close a garment 5, wherein in this case two closure devices 1 are provided for tensioning two tension elements 4. The tension elements 4 are each fixed to a fastening point 53 on one side of the opening slit of the garment 5 and can be tensioned by arranging the respective closure part 3 on the associated closure part 2 of the closure device 1 on the other side of the opening slit of the garment 5.

[0122] In the embodiment according to Figs. 31 and 32The closure device 1 serves to close and tighten a medical aid 5 in the form of an ankle bandage on a foot 7. By arranging the closure part 3 connected to one end of the ankle bandage on the closure part 2 connected to another end of the ankle bandage and by tightening the tension element 4 extended on the ankle bandage, the ankle bandage can be closed and tightened.

[0123] Figs. 33 and 34 show another embodiment of a medical aid 5 in the form of an ankle bandage, in which the tension element 4 connected at one end to the closure part 2 and at another end to the closure part 3 can be laid around a deflection 54 and by attaching the closure part 3 to the closure part 2 a loop of the tension element 4 is thus formed, which loop can be tightened by twisting the closure part 3 relative to the closure part 2 to close and tighten the ankle bandage.

[0124] Fig. 35 shows an embodiment of a medical device 5 in the form of an orthosis designed as a neck brace, in which the closure device 1 serves for closing and tightening. A tension element 4 connected to the closure part 3 can be routed around tension hooks 50, starting from a fastening point 53, and tightened by rotating the closure part 3 relative to the closure part 2.

[0125] Figs. 36 and 37 show an embodiment of a helmet 5, for example, a bicycle helmet, in which the closure device 1 serves to close and tension a strap 55. The tension element 4 is a component of the strap 55 and can be wound onto the closure part 3, namely the winding element 35 of the closure part 3, in order to thereby tension the strap 55.

[0126] In the embodiment according to Figs. 38 and 39The closure device 1 serves to tighten a chin strap 56 of a helmet 5, for example, a bicycle helmet. The closure part 3 of the closure device 1 can be arranged on the closure part 2 and rotated relative to the closure part 2 in order to tighten the strap 56.

[0127] In the embodiment according to Fig. 40 The locking device 1 is used to adjust the height of an assembly 5 in the form of a lamp. The tension element 4 serves to suspend the lamp. By turning the locking part 3 of the locking device 1, the length of the tension element 4 can be changed, thus adjusting the height of the lamp.

[0128] In the embodiment according to Fig. 41 The locking device 1 is used to hang an assembly 5 in the form of a picture. By rotating the locking part 3, the length of the tension element 4 can be changed, thus adjusting the hanging of the picture.

[0129] In the Fig. 42 to 44 In the illustrated embodiment, the closure device 1 serves for the electrical connection of a module in the form of a lamp 5. The closure part 2 is designed as a plug for this purpose. The closure part 3 can be rotated relative to the closure part 2 in the form of a plug in order to thereby change the freely extended length of the electrical cable forming the tension element 4.

[0130] In the embodiment according to Fig. 45 The locking device 1 serves to tension an assembly 5 in the form of a roller blind. The locking part 3 is connected to the roller blind via the tension element 4. By arranging it on the locking part 2, which is arranged, for example, on a frame, and by rotating the locking part 3, the tension element 4 can be wound up and the roller blind can thus be adjusted.

[0131] In the embodiment according to Fig. 46 are, in contrast to the embodiment according to Fig. 45, two ends of the pulling element 4 are connected to the closure part 3, so that by twisting the closure part 3 the two ends of the pulling element 4 can be wound simultaneously onto the winding element 35 of the closure part 3.

[0132] In a Fig. 47 In the embodiment shown, the locking device 1 serves to tension a tension element 4 in the form of a belt on a piece of luggage.

[0133] In a Fig. 48 In the embodiment shown, the closure device 1 serves to tension a tension element 4 in the form of a band or a rope on a piece of luggage in the form of a backpack in order to attach objects to the piece of luggage in this way.

[0134] In a Fig. 49In the illustrated embodiment, the closure device 1 serves to fasten an object 5, for example a mobile phone or the like, to a bicycle, in particular to a bicycle handlebar. The tension element 4 is looped around the object 5 and can be tensioned by winding it section by section onto the winding element 35 of the closure part 3.

[0135] Fig. 50 shows another embodiment with a different winding of the tension element 4 for fastening an object 5, for example a mobile phone, to a bicycle.

[0136] In a Fig. 51In the illustrated embodiment, the locking device 1 serves to secure an object, for example, a piece of luggage, in the cargo space of a vehicle. The tension element 4 is laid over the piece of luggage and thus holds the piece of luggage stationary on the floor of the cargo space. The tension element 4 can be tensioned via the locking device 1 to secure the piece of luggage.

[0137] Fig. 52 to 56 show a further embodiment of a closure device 1, in which 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.

[0138] In the embodiment according to Fig. 52 to 56The tension element 4 is designed as a belt that can be wound onto a winding element 35 in the form of a sleeve of the closure part 3. The closure part 3 can be attached to the closure part 2, which has, for example, a belt buckle, so that the ends of the tension element 4 can be connected to one another and tensioned relative to one another via the closure device 1.

[0139] The closure part 3 has an actuating element 34 with a hand lever formed thereon, which can be brought into engagement with an engagement device 355 of the winding element 35 via an engagement device 345, so that the winding element 35 can be rotated in a winding direction V relative to the closure part 2 via the actuating element 34.

[0140] As can be seen particularly from the sectional view according to Fig. 56As can be seen, the actuating element 34 has a pin 346 with an engagement opening 347, with which the actuating element 34 can be placed in the closing direction X on a cylinder section 201 on a body 20 of the closure part 2 in order to connect the closure parts 2, 3 to one another.

[0141] For example, due to a spring preload between the actuating element 34 and the winding element 35, the engagement devices 345, 355 are not in engagement with each other when the closure parts 2, 3 are separated from each other. The winding element 35 can thus be freely rotated relative to the actuating element 34, so that the pulling element 4 can, for example, be unwound from the winding element 35. For closing, the closure part 3 is placed on the closure part 3 in such a way that the engagement opening 347 on the pin 346 of the actuating element 34 engages with the cylinder section 201 of the closure part 2, wherein the winding element 35 is supported on the body 20 of the closure part 2 and due to a magnetic attraction of magnetic elements 23, 33 on the cylinder section 201 on the one hand and the pin 346 of the actuating element 34 on the other hand (see Fig. 56) the actuating element 34 is pulled toward the winding element 35, causing the engagement devices 345, 355 to engage one another in a positive-locking manner. In this way, an operative connection is established between the actuating element 34 and the winding element 35, so that when the closure parts 2, 3 are connected to one another, the actuating element 34 and the winding element 35 can be rotated together in order to wind the tension element 4 onto the winding element 35 and thereby tension the tension element 4.

[0142] At an end facing the body 20, the winding element 35 has a toothing device 351 in the form of a sawtooth-shaped toothing, which, when the closure parts 2, 3 are connected to one another, engages with a toothing device 25 on the body 20. The engagement of the toothing devices 25, 351 causes the closure parts 2, 3 to be rotated relative to one another in the winding direction V in order to tension the tension element 4 on the winding element 35, but not counter to the winding direction V.

[0143] To release the closure device 1, the closure parts 2, 3 can be pulled away from each other in the opposite direction to the closing direction X, so that in this way the closure parts 2, 3 are separated from each other.

[0144] Fig. 57A and 57B show the locking device 1 with separate locking parts 2, 3 ( Fig. 57A ) and with the locking device closed 1 ( Fig. 57B). The closure device 1 can be used, for example, to tighten a strap in the form of a belt.

[0145] Fig. 58 a further embodiment of a closure device 1, in which closure parts 2, 3 can be attached to one another in a closing direction X, analogously to what has been described above.

[0146] In the embodiment according to Fig. 58 a gear 26 is provided on the closure part 2, which can, for example, have the shape of a bevel gear or worm gear and serves to drive the locking element 21 via the toothing device 25 (which, when the closure parts 2, 3 are connected to one another, engages with the toothing device 351 of the closure part 3, as can be seen, for example, from Fig. 52 can be seen) to rotate the closure part 3 relative to the closure part 2 in order to tension the tension element 4. In the embodiment according to Fig. 58The locking parts 2, 3 are rotated relative to one another via a gear provided on the locking part 2, which can be operated manually, for example.

[0147] Fig. 59 to 62A , 62B show a further embodiment in which such a gear 26 is implemented for tensioning the winding element 35.

[0148] The gear 26 is in the embodiment according to Fig. 59 to 62A , 62B designed as a tensioning mechanism, in which a tensioning lever 260 is pivotally mounted on the body 20 of the closure part 2 about a pivot axis 265 and is moved by a spring element 261 relative to the body 20 into a basic position (shown in Fig. 62A, 62B ) is prestressed.

[0149] In the exemplary embodiment, the closure part 3 can be placed onto a cylindrical section 201 of the body 20 with a winding element 35 and, in the connected position, engages with an associated gearing device 25 of the body 20 via a toothing device 351, as also described above. A tensioning engagement 356 in the form of a toothing is formed on the winding element 35, which rotates around the winding element 35 and serves to interact with the gear 26.

[0150] An engagement lever 262 is arranged on the tensioning lever 260 of the gear 26 and is pivotable about a pivot axis 263, which serves to engage in the tensioning engagement 356 of the winding element 35.

[0151] To attach the locking parts 2, 3 to each other, the clamping lever 260 can be used, as shown in Fig. 61A, 61BAs shown, the engagement lever 262 can be deflected from the basic position into a pivoting direction P1, in order to thereby remove the engagement lever 262 from an area occupied by the winding element 35 when the closure parts 2, 3 are connected to one another. The closure parts 2, 3 can thus be easily attached to one another without hindrance by the gear 26.

[0152] If the clamping lever 260 is released again, the gear 26 with its clamping lever 260 returns to the basic position according to Fig. 62A, 62B in which the engagement lever 262 is engaged with the clamping engagement 256.

[0153] If the tensioning lever 260 is now deflected in a pivoting direction P2, the engagement lever 262 is also moved and rotates the winding element 35 in the winding direction V, so that the tension element 4 is wound onto the winding element 35. The tension element 4 is thus tensioned.

[0154] Tensioning occurs step by step. Due to the spring element 261 and the spring preload provided thereby, the tensioning lever 260 is automatically returned to its home position after actuation, with the engagement lever 262 accompanying the tensioning engagement 356, with elastic deflection of the spring element 264, via which the engagement lever 262 is elastically preloaded relative to the tensioning lever 260. The tensioning of the tension element 4 thus occurs step by step through repeated actuation of the tensioning lever 260.

[0155] A freewheel is also provided via the spring element 264. The winding element 35 can also be rotated manually in the winding direction V. In this case, the engagement 262 slides over the clamping engagement 356 of the winding element 35, with elastic deflection of the spring element 264.

[0156] A locking device of the type described here can be used in a wide variety of applications. A locking device of the type described combines a clamping device with separable locking parts, which allows assemblies to be connected while simultaneously clamping the assemblies against each other. List of reference symbols

[0157] 1Closing device 2Closing part 20Base body 200Opening 201Cylindrical section 202Locking engagement (locking groove) 23Magnetic element 25Toothing device 250Bevel 251Tooth flank 252Protrusion element 253Locking lug 26Gearing device 260Clamping lever 261Spring element 262Engagement lever 263Pivot axis 264Spring element 265Pivot axis 3Closing part 32Cover element 320Body 321Opening 322Receiving space 33Magnetic element 34Actuating element 340Base surface 341Cylindrical projection 342Retaining element 343Spring element 344Side wall 345Engagement device 346Pin 347Opening 35 Winding element 350 Opening 351 Toothing device 352 Ring collar 353 Groove 354 Ring collar 355 Engagement device 356 Clamping engagement 36 Latching device 37 Operating element 370 Body 371 Ring collar 372 Release opening 373 Opening 374 Spring element 38 Engagement element 380 Body 381 Ring collar 382 Receiving opening 383 Opening 384 Spring element 385 Latching element 386 Spring element 387 Opening 4 Tension element 5 Assembly 50 Tension hook 51 Sole 52 Trouser leg53Attachment point 54Deflection 55Belt 56Strap 6Hand 7Foot BBoom direction DActuating direction LRelease direction P1, P2Pivoting direction VWinding direction XClosing direction

Claims

1. A closure device (1) for releasably connecting two parts, comprising a first closure part (2) and a second closure part (3) which can be attached to each other along a closing direction (X), are held at each other in a closed position, and can be released from each other for opening the closure device (1) by separating the first closure part (2) and the second closure part (3), wherein the second closure part (3) includes an actuating element (34) with a first engagement device (345) and a winding element (35) with a second engagement device (355), which is arranged on the actuating element (34) and can be rotated in a winding direction (V) for winding up a traction element (4), wherein in a release position the first engagement device (345) and the second engagement device (355) are not in engagement with each other so that the winding element (35) can be rotated relative to the actuating element (34), and can be brought into engagement with each other so that in an engagement position the winding element (35) can be rotated via the actuating element (34), wherein the first closure part (2) includes a first meshing device (25) and the second closure part (3) includes a second meshing device (351), and in the closed position of the closure device (1) the first meshing device (25) and the second meshing device (351) are in engagement with each other in such a way that the first closure part (2) and the second closure part (3) are positively held relative to each other along the winding direction (V), wherein in the closed position the first closure part (2) and the second closure part (3) are mechanically latched with each other to hold the closure parts (2, 3) at each other against the closing direction (X), wherein the first closure part (2) and the second closure part (3) each include at least one magnetic element (23, 33) for providing a force of magnetic attraction on attachment of the closure parts (2, 3) to each other.

2. The closure device (1) according to claim 1, characterized in that in the closed position of the closure device (1) the first engagement device (345) and the second engagement device (355) are in the engagement position.

3. The closure device (1) according to claim 1 or 2, characterized in that in the engagement position of the first engagement device (345) and the second engagement device (355), when the actuating element (34) is rotated in the winding direction (V), the winding element (35) is moved in the winding direction (V) together with the actuating element (34), but the actuating element (34) can be rotated relative to the winding element (35) against the winding direction (V).

4. The closure device (1) according to any of claims 1 to 3, characterized in that the first engagement device (345) and / or the second engagement device (355) have a sawtooth-shaped toothing extended around the closing direction (X).

5. The closure device (1) according to any of the preceding claims, characterized in that the actuating element (34) and the winding element (35) are adjustable with respect to each other for moving the engagement devices (345, 355) between the release position and the engagement position axially along the closing direction (X).

6. The closure device (1) according to any of the preceding claims, characterized in that the actuating element (34) and the winding element (35) are spring-biased with respect to each other in the direction of the release position.

7. The closure device (1) according to any of the preceding claims, characterized in that the second meshing device (351) is arranged on the actuating element (34) or on the winding element (35).

8. The closure device (1) according to any of the preceding claims, characterized in that in the closed position the second closure part (3) can be rotated relative to the first closure part (2) in the winding direction (V), but a rotation of the second closure part (3) relative to the first closure part (2) against the winding direction (V) is blocked.

9. The closure device (1) according to any of the preceding claims, characterized in that the first closure part (2) includes a cylinder portion (201) which in the closed position engages into an opening (350) of the winding element (35) to rotatably support the winding element (35) on the first closure part (2).

10. The closure device (1) according to any of the preceding claims, characterized in that one of the closure parts (2, 3) includes a latching device (36) with at least one movable latching element (385) which in a latched position engages into a latching receptacle (202) of the other closure part (3, 2) and thereby holds the closure parts (2, 3) at each other against the closing direction (X).

11. The closure device (1) according to claim 10, characterized in that on attachment of the closure parts (2, 3) the latching device (36) automatically gets into the latched position.

12. The closure device (1) according to claim 10 or 11, characterized in that the at least one latching element (385) is spring-biased in the direction of the latched position.

13. The closure device (1) according to any of claims 10 to 12, characterized in that the latching device (36) includes an engagement element (38) which in the closed position engages into the other closure part (3, 2) and on which the at least one latching element (385) is arranged.

14. The closure device (1) according to claim 13, characterized in that the latching device (36) is arranged on the second closure part (3) and the engagement element (38) is axially adjustable relative to the actuating element (34) along the closing direction (X).