DE102021002959A1 - Folding device for a bowed weapon, method of manufacturing a folding device for a bowed weapon and bowed weapon - Google Patents

Abstract

The present invention relates to a folding device for a bowed weapon, in particular for a crossbow, with a shaft connection section, with two throwing arms, each having a free end and a shaft-side end pivotably mounted on the shaft connection section, with two pawls, each pivotably mounted on the shaft connection section are, wherein the pawls are pivotally arranged such that the limbs can be fixed in a closed position of the respective pawls for unfolding and / or stretching a bow and in an open position of the respective pawls the limbs are each released for folding. The present invention also relates to a method for producing such a folding device and a bowed weapon with such a folding device.

Description

FIELD OF THE INVENTION

The present invention relates to a folding device for a bowed weapon, in particular for crossbows, a method for producing such a folding device and a bowed weapon with such a folding device.

TECHNICAL BACKGROUND

Bowguns exist in fixed, collapsible and foldable configurations and are used for a wide variety of applications, such as in shooting sports. Although the present invention and the problem on which it is based are described using a crossbow, they are not limited to this, but can be transferred to a wide variety of types of bowed weapons.

A crossbow, also known as a crossbow, is usually a comparatively bulky bowed weapon due to its expansion in two spatial directions, which makes transport and storage more difficult. The expansive shape is due to the limbs running almost perpendicular to the barrel. Due to this fact, the crossbow can only be transported to a limited extent in conventional transport containers such as suitcases or the like, or only in specially developed transport containers, without disassembling it into individual parts.

Alternatively, the crossbow can be disassembled for transport or storage. However, disassembling the crossbow into its individual parts involves carrying tools and potentially time-consuming and complex assembly and disassembly and, if necessary, adjustment processes. It is thus desirable to reduce the volume occupied for transporting and storing a crossbow in order to facilitate transport.

From the GB2131706A a foldable crossbow is known that allows the limbs to be folded onto the barrel. The crossbow is designed with two pivoting limbs. The disadvantage is that the release of the limbs is controlled by a lever mechanism attached to the front end of the crossbow stock. This lever mechanism, which is also attached to the shaft, has a negative impact on the size and weight of the crossbow, the complexity of operation and, in particular, an unfavorable weight distribution of the crossbow towards the end of the shaft. In addition, with the lever mechanism it is only possible to secure or release the limbs together or at the same time, which makes handling more difficult.

SUMMARY OF THE INVENTION

Against this background, the present invention is based on the object of specifying an improved folding device and a method for its production.

According to the invention, this object is achieved by a folding device having the features of patent claim 1 and/or by a method having the features of patent claim 11 .

• - Eine Faltvorrichtung für eine Bogenwaffe, insbesondere für eine Armbrust, mit einem Schaftverbindungsabschnitt, mit zwei Wurfarmen, die jeweils ein freies Ende und ein schwenkbar an dem Schaftverbindungsabschnitt gelagertes schaftseitiges Ende aufweisen, mit zwei Sperrklinken, die jeweils schwenkbar an dem Schaftverbindungsabschnitt gelagert sind, wobei die Sperrklinken derart schwenkbar angeordnet sind, dass die Wurfarme jeweils in einer Schließstellung der jeweiligen Sperrklinken zum Auffalten und/oder Aufspannen eines Bogens fixierbar und in einer Öffnungsstellung der jeweiligen Sperrklinken die Wurfarme jeweils zum Falten freigegeben sind.
• - Ein Verfahren zum Herstellen einer Faltvorrichtung für eine Bogenwaffe, insbesondere Armbrust, mit den Schritten: Breitstellen eines Schaftverbindungsabschnitts, zweier Wurfarme, zweier Wurfarmaufnahmen, zweier Sperrbolzen und zweier Sperrklinken; Befestigen der Sperrbolzen an den Wurfarmaufnahmen; Schwenkbares Anlenken der Wurfarmaufnahmen an dem Schaftverbindungsabschnitt; Schwenkbares Anlenken der Sperrklinken an dem Schaftverbindungsabschnitt versetzt zu den Wurfarmaufnahmen derart, dass die Sperrklinken mit jeweils einem an den Wurfarmaufnahmen befestigten Sperrbolzen in Eingriff bringbar sind; und Befestigen der Wurfarme an den Wurfarmaufnahmen.
• - Bogenwaffe, insbesondere Armbrust, mit einem Schaft; und einer erfindungsgemäßen oder mit einem erfindungsgemäßen Verfahren hergestellten Faltvorrichtung, welche über den Schaftverbindungsabschnitt mit dem Schaft verbunden ist.

Accordingly, it is provided:

• - A folding device for a bowed weapon, in particular for a crossbow, with a shaft connection section, with two throwing arms, each having a free end and a shaft-side end pivotably mounted on the shaft connection section, with two pawls, each pivotably mounted on the shaft connection section, wherein the pawls are pivotably arranged such that the limbs can be fixed in a closed position of the respective pawls for unfolding and/or stretching a bow and in an open position of the respective pawls the limbs are each released for folding.
• - A method for producing a folding device for a bow weapon, in particular a crossbow, with the steps: providing a shaft connecting section, two limbs, two limb mounts, two locking pins and two pawls; Fastening the locking pins to the limb sockets; Pivotally articulating the throwing arm mounts at the shank connecting portion; Pivotally pivoting the pawls on the shank connecting portion offset to the limb mounts such that the pawls are engageable with a respective locking pin fixed to the limb mounts; and attaching the limbs to the limb sockets.
• - Bow weapon, in particular crossbow, with a stock; and a folding device according to the invention or produced using a method according to the invention, which is connected to the shaft via the shaft connection section.

The finding on which the present invention is based is that the folding of the throwing arms of a bowed weapon can be realized without the use of levers additionally attached to the shaft.

The idea on which the present invention is based is not to attach the limbs to the shaft itself, but to a shaft connection section and to enable the folding process or the release or fixing of the respective limbs via pawls articulated on the shaft connection section.

According to the invention, this advantageously results in significantly simplified handling of a bowed weapon with such a folding device. This applies both in the folded state, since it is much smaller overall, and in the unfolded or stretched state, since the safety device can be released by directly actuating the limbs themselves. A bowed weapon can thus be folded more easily with the folding device according to the invention and thus packed, stowed away and/or transported more easily with folded limbs.

In particular, according to the invention, a lower weight is made possible because no additional add-on parts, such as levers, buttons and/or rails are required for unfolding, folding, fixing and/or releasing the limbs. All of this is replaced by a much more compact ratchet mechanism. In addition, by avoiding additional attachments, the folding device also requires less maintenance. The smaller number of parts also simplifies manufacture.

According to the invention, it is particularly advantageous that no adjustments of any kind to a conventional shaft are necessary. The folding device can easily be mounted on a conventional shaft with the shaft connecting portion instead of a conventional fixed bow.

The assembly and disassembly of a string, which proves to be laborious and problematic in conventional crossbows without a folding device, is significantly simplified by folding both or one of the limbs. Accordingly, when the limbs are released for folding, the tendon is mounted, for example suspended, at the free end of the limbs. The limbs can then be unfolded in a subsequent step and fixed with the pawls, in particular automatically. The assembly of the tendon can therefore be carried out without additional tensioning aids or similar aids, in particular by a single person.

In particular, the shaft connection section forms a platform on which, among other things, the limbs and the pawls are pivotably mounted. Any type of design suitable for holding the limbs and pawls, on which a shaft can be mounted, is to be regarded as the shaft connection section.

In addition, according to the invention, the folding device can be combined with any type of stock, barrel or guide of a bowed weapon. Due to the structure of the shank connection section, there are no special requirements for the component on and/or in which the shank connection section is mounted and/or integrated. Finally, the connection can be made using any type of fasteners, rails, clamps or similar.

The invention can thus be applied to a variety of bowed weapons in addition to crossbows. For example, a combination with a center piece, handle and/or guide shaft of a sports bow, for example a reflex bow or a compound bow, or with the base of a bow catapult, ballista or the like would also be conceivable.

In particular, the closed position of the pawls is selected in such a way that in this position the use of the folding device in combination with a string and a shaft of a bowed weapon for throwing an arrow is advantageously made possible.

The method for producing the folding device represents in particular an assembly method or a method for assembling a folding device.

The comparatively small number of parts without deflection elements or the like and the correspondingly low complexity of the steps to be carried out advantageously result in a very manageable method for producing the folding device that can be carried out by a single person.

Advantageous refinements and developments result from the further dependent claims and from the description with reference to the figures of the drawing.

According to an advantageous embodiment, the limbs can be folded in a predetermined direction. When the bow is unfolded, the pawls can be released by moving the limbs counter to the predetermined direction for pivoting from the closed position into the open position. In this way, the user is able to bring the folding device from a state with unfolded limbs to a state with folded limbs. The limbs themselves are thus used as a lever to pivot the pawls against the predetermined direction and finally release them. In this way, no additional levers are advantageously necessary. The limbs can be pivoted about a fixed axis in the predetermined direction and are therefore only in moveable with one degree of freedom. In further embodiments, the limbs can also be pivotable in the predetermined direction via other kinematics, for example a trapezoidal link arrangement or the like. The limbs can each be moved individually, so that the force required for this is lower. The force required to swivel the limbs against the predetermined direction depends on several factors, such as whether a string is attached, the rigidity of the limbs themselves, their possible pre-tensioning by the string, and the like. The force can preferably be applied manually by means of the large lever or the distance between the free end of the throwing arm and the end on the shaft side, which is pivotably mounted on the shaft connection section.

According to one embodiment, the pawls are designed as a profile, with the profile having an actuating area which makes it possible to pivot the pawls against the predetermined direction manually, for example with your fingers or a tool. Accordingly, the actuation area provides a manual, in particular hand-actuable, contact surface for the actuation of the pawls.

According to one embodiment, the pawls are formed with a substantially U-shaped cross section. In the closed position, a central web of the U-shape covers an engagement section with the throwing arms, so that it is advantageously impossible for a user's body parts to become trapped. Furthermore, the pivoting bearing, both the pawls and the limbs, are covered and the moving components are protected, for example, from external influences and from dirt when the bowgun is in use. Overall, a high level of operational and functional reliability is thus provided.

According to an advantageous embodiment, securing elements are provided for securing the limbs when the bow is unfolded. The securing elements are used to secure the limbs against unwanted movement against the predetermined direction. The securing elements can be in the form of securing pawls or alternatively, for example, also in the form of securing pins, securing bolts or the like. In the case of safety pawls, the safety elements are, in particular, pivotably mounted on the shank connection section. The additional security provided with the security elements can prevent injuries and interruptions in operation due to an unintentional folding of the limbs, so that the user of the bowed weapon is additionally secured. The securing elements advantageously serve as an additional safety concept which does not interfere with the use of the rest of the folding device. A particularly simple safety concept is thus created and the ease of use is nevertheless retained.

According to an advantageous embodiment, the securing elements are designed to be pivotable independently of one another. The independent design of the two safety elements makes it possible to secure or unlock the respective limbs individually via the respective pawls. When assembling the tendon of a bow weapon, for example, only one of the two limbs in the unfolded state can preferably be fixed by the associated pawl and secured by the associated securing element, while the tendon is pretensioned in a safe manner when the other limb is unfolded.

According to an advantageous embodiment, a spring is provided on each of the pawls. The springs each exert a preload on the respective pawl. This pretension causes the pawls to automatically snap into the closed position when the limbs are unfolded against the predetermined direction. Thus, the throwing arm is automatically fixed by means of the pawl when it is unfolded. The spring can be designed as an elastic element with a variety of configurations, for example as a torsion spring, compression spring, tension spring or the like. In this way, the user is supported in the handling when unfolding the limbs and a particularly safe use of the folding device is provided.

According to another embodiment, the limbs are independently pivotable for folding and unfolding. Advantageously, this makes it easier to handle the bowed weapon, for example when mounting a string. In particular, handling for stretching with a tendon is thus simplified since initially only a first of the two limbs is fixed in the unfolded state and the tendon is only pretensioned by unfolding the second limb. This means that the shaft can be held with one hand and the second limb can be stretched directly with the other hand without having to hold the string with your hand. In this way, tensioning of the string by an individual is simplified.

According to a further embodiment, the pawls are designed to be pivotable independently of one another. The already mentioned simplifications when pretensioning the tendon are advantageous. Furthermore, when unfolding the limbs, the user can individually focus on the respective litter poor concentration as the pawls engage independently.

According to a further embodiment, the limbs are each mounted pivotably on the shaft connection section by means of a limb connection. In this way, the respective limbs can be serviced or replaced without further disassembly of the folding device, for example to provide different draw weights and/or bow spans. In addition, the user is able to exchange the limbs without great effort to adapt the folding device to different shafts or different extension lengths. In particular, the limbs are exchanged simply by loosening a fastener that fixes the limbs in the limb mounts. For this purpose, the fastening means can be designed as any non-positive and/or positive connection, for example as a screw connection.

According to one embodiment, the limb mounts are designed with a recess for accommodating the respective limbs and/or locking pins. In one embodiment, for example, the limb mounts essentially have a double-T cross-section. In this case, the limbs are fixed in particular on the middle bar of the limb mounts. They are preferably received or encompassed between the arms or flanges of the cross-section in a form-fitting manner. In particular, they are attached to the webs with a fastener.

According to a further embodiment, the locking pawls and the securing elements can each be brought into engagement via the same locking bolt fixed in the respective throw receptacles. The locking pin and the engagement positions are easily visible from the outside, so that the fuse can be easily identified visually, which increases safety in use. In addition, the number of parts and also the weight of the folding device is advantageously reduced by the respective engagement of the pawls and safety elements on the same locking pin. The locking bolts preferably extend through recesses in the arms or flanges of the respective limb mounts and are fixed therein. The locking bolts can be designed, for example, as screws, bolts or pins.

According to a further embodiment, the shaft connection section is designed for connection to a shaft of a bowed weapon, in particular a crossbow. For this purpose, the shank connection section is preferably formed as a hollow profile, particularly preferably as a U-profile. This creates a particularly advantageous starting position for mounting on an elongate stock, barrel or guide.

According to one embodiment of the method, a step of the pivotable articulation of two securing elements on the shank connection section is provided. The securing elements are articulated in such a way that they can also be brought into engagement with one of the locking bolts fastened to the limb mounts. The security elements advantageously serve as an additional security concept that is independent of the pawls. In addition, the respective pawls and shear elements engage the same locking pin. Thus, in view of the number of parts, the method of manufacturing the folding device is simplified.

According to an advantageous embodiment of the method according to the invention, the pawls are each placed on a first side and the securing elements are each placed on a second side of the limb mounts. In particular, the first side is an inner side within an intermediate space accommodating the throwing arm. Alternatively or additionally, the second side is an outside outside of the gap. Preferably, the placement is such that the locking clinches are engaged with the locking pin at two positions. In addition, the safety element is placed on the outside to make it easier for the user to lock and unlock and to identify the safety status.

According to a further embodiment of the method, the locking pins are each fastened in recesses in the limb mounts. In particular, they extend through the recesses for this purpose. Advantageously, the locking pins are integrated within another component, in particular the limb mounts, and no additional bracket is required. This reduces the weight of the folding device and the complexity of the manufacturing process. Finally, for example, the locking bolt can be fixed with a screw nut in the case of an embodiment as a screw or screw bolt.

The above configurations and developments can be combined with one another as desired, insofar as this makes sense. In particular, all of the features of the folding device can be transferred to the method for its production and to a bowed weapon with such a folding device, and vice versa. Further possible refinements, developments and implementations of the invention also include combinations of the above or below with regard to the design that are not explicitly mentioned exemplary embodiments described features of the invention. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

character list

• 1 eine schematische Darstellung einer Faltvorrichtung;
• 2 eine Draufsicht einer Faltvorrichtung gemäß einer weiteren Ausführungsform;
• 3 eine Seitenansicht der Faltvorrichtung nach 2;
• 4 eine Querschnittdarstellung der Faltvorrichtung nach 2 und 3;
• 5 die Faltvorrichtung gemäß 4, mit einem gelösten Wurfarm;
• 6 die Faltvorrichtung gemäß 4, mit einem gefalteten Wurfarm;
• 7 eine isometrische Explosionszeichnung einer Faltvorrichtung; und
• 8 eine schematische Darstellung einer Bogenwaffe.

The present invention is explained in more detail below with reference to the exemplary embodiments given in the schematic figures of the drawing. They show:

• 1 a schematic representation of a folding device;
• 2 a plan view of a folding device according to a further embodiment;
• 3 a side view of the folding device 2 ;
• 4 a cross-sectional view of the folding device 2 and 3 ;
• 5 according to the folding device 4 , with a loosened limb;
• 6 according to the folding device 4 , with a folded limb;
• 7 an isometric exploded drawing of a folding device; and
• 8th a schematic representation of a bow weapon.

The accompanying drawing figures are intended to provide a further understanding of embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the foregoing advantages will become apparent by reference to the drawings. The elements of the drawings are not necessarily shown to scale with respect to one another.

In the figures of the drawing, elements, features and components that are the same, have the same function and have the same effect--unless stated otherwise--are each provided with the same reference symbols.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

1 shows a schematic representation of a folding device 1 with a reduced number of components.

The folding device 1 has a central shaft connection section 2 , two limbs 3 , two pawls 4 and two locking pins 11 . It is therefore a folding device with a reduced number of components.

The shank connection section 2 is designed both for connection to the shank and for central, pivotable mounting of the other components. For this purpose, the pawls 4 and the limbs 3 are each pivotably mounted on the shaft connecting piece 2, as symbolized by the connecting circles shown. The pawls 4 and limbs 3 are mounted offset to one another on the shaft connecting section 2 .

The locking pins 11 are connected to the respective limbs 3 . The pawls 4 are pivotably arranged in such a way that they can engage in the locking pins 11 connected to the limbs 3 .

When a pawl 4 engages in the respective locking pin 11, it is in its closed position and the associated throwing arm 3 is fixed for unfolding and/or stretching a bow. If the pawl 4 is disengaged into an open position 6, the throwing arm 3 is released for folding again.

The folding device 1 and its components are mirror-symmetrical about the mirror axis shown. The reference numbers of the mirror-image components are additionally marked with an “a” for better clarity.

2 shows a plan view of a folding device 1 according to a further embodiment.

This embodiment of a folding device 1 has a central shaft connecting section 2 , two limbs 3 , two pawls 4 , two locking pins 11 , two safety pawls 8 and two limb mounts 10 . The functional relationship between limbs 3 and pawls 4 is the same with respect to 1 described.

Also shown here is a predetermined direction 7 in which the limbs 3 can be folded. When the bow is unfolded, the pawls 4 can also be released by moving the limbs 3 counter to the predetermined direction 7 for pivoting from the closed position 5 into the open position 6 .

In addition to a central U-profile for connection to a shaft, the shaft connection section 2 is also designed to support the other components. The shaft connection section 2 is designed here purely by way of example as a U-profile. In further embodiments, other profiles, in particular hollow profiles, would also be conceivable for the shaft connection.

On the two opposite legs of the U-profile, the pawls 4, limb mounts 10 and safety pawls 8 are pivotally mounted on the respective outside. The locking pawls 4 and safety pawls 8 are mounted on the shaft connecting section 2 in an offset manner with respect to the limb mounts 10 . The locking pawls 4 and safety pawls 8 are mounted pivotably one above the other on a common bolt on the shaft connecting section 2 at the same point. Separate bolts are provided for the pivotable mounting of the limb mounts 10 .

In addition, two optional tendon stoppers 12 are mounted on the shaft connection section 2 here, purely by way of illustration. The tendon stops 12 are mounted on extensions in the predetermined direction of the opposite legs.

The limbs 3 have a curved shape that is usual for bow weapons, which serves for a harmonious course of a neutral fiber. In addition, a tendon stretched on the limbs is moved behind the limb mounts 10 in this way. The limbs 3 are curved in such a way that they run essentially parallel to the course of the string at their free end and at their shaft end. In between, the limbs 3 each run downwardly curved.

In addition, the folding device 1 has a projectile guide 13 which is firmly connected to the web of the shaft connecting section 2 . On the web, on the side of the projectile guide 13 , two fastening means 14 embodied as screws, for example, are provided for fastening to the shaft. The projectile guide 13 has a flat surface with a groove arranged centrally between the vertical legs of the shank connection section 2 in order to guide a projectile in the firing direction.

In the embodiment shown, the securing elements 8 are, for example, securing pawls. The safety pawls are mounted pivotably on the shaft connecting section 2 at their shaft-side end. The free end is designed like a hook in such a way that it can be positively engaged with the respective locking pin 11 . In this way, the respective limb receptacles 10 and limbs 3 are secured in the unfolded state against unwanted movement counter to the predetermined direction 7, which would release the pawls into the open position 6. In further embodiments, however, this function of the securing elements 8 can also be achieved by differently designed components.

3 shows a side view of the folding device 1 after 2 .

As can be seen from this view, the free end of the limbs 3 is specially designed to accommodate a tendon. The free ends are therefore tapered in shape to accommodate the looped ends of the tendon.

The limbs 3 are fixed to a central web of the limb mounts 10, which are double-T-shaped in cross section, by means of two fastening means 15, head screws which can be seen here as an example. In the illustrated embodiment, two fasteners 15 have been provided to fix the limbs 3 translationally and rotationally. In addition, the limbs 3 are held in a form-fitting manner between the flanges of the limb mounts 10 and are encompassed by them.

In the illustrated embodiment, the pawls 4 are U-shaped in cross section and are also arranged between the flanges of the limb mounts 10 . Due to their U-shape, the pawls 4 engage with the locking bolts 11 at two points at the same time. The locking pins 11 are fastened in recesses in the limb mounts 10 . In addition, the engagement of the pawls 4 and safety elements 8 on the same locking pin 11 can be seen in the view shown. The point of engagement of the securing elements 8 in the locking bolts 11 is located outside of the limb mounts 10 and is therefore easily visible to the user. The engagement points of the pawls are protected within the limb mounts 10 to prevent injuries and dirt.

4 1 shows a cross-sectional view of the folding device 1 2 and 3 .

The folding device 1 is shown in section about halfway up the limbs 3 .

In the illustrated embodiment, the limbs 3 are connected to the web of the limb mounts 10 by two fastening means 15 . In addition, the pivotable mounting of the limb mounts 10 with the shaft connection section 2 via corresponding bearings 18 is shown.

The pawls 4 are designed as U-profiles and in their closed position 5 are positively connected to the locking pin 11 with a hook 17 which partially engages behind the locking pin and which is formed with a recess within the pawl 4 .

At the free end of each pawl 4 is an operating area 16 for manual Pivoting the pawls 4 formed. In addition, the pivotable mounting of the pawls 10 with the shaft connecting section 2 via respective bearings 18 is shown.

For the pivotable mounting of the respective limb mounts 10 and pawls 4, the folding device 1 has two bearings 18 on each side, on which the limb mounts 10 and pawls 4 are pivotally mounted with a bolt. In the illustrated embodiment, the bearings 18 are designed as sleeves, for example. The bearings 18 are here vertical, ie perpendicular to the course of the limbs 3, attached to the shank connection section 2, purely by way of example materially bonded here by means of welding.

5 shows the folding device 1 according to FIG 1 with a released throwing arm 3.

In contrast to the illustration 4 the upper throwing arm 3 is moved in the illustrated position of the associated pawl 4 against the predetermined direction 7 and the pawl 4 is thereby released.

The movement of the throwing arm 3 counter to the predetermined direction 7 also makes it possible to also move the pawl 4 counter to the predetermined direction 7 , for example by manual actuation of the actuation area 16 . Consequently, the hook 17 no longer grips the locking pin 11 in a form-fitting manner and the limb 3 is released from the locking pawl 4 for folding.

The upper pawl 4 is here accordingly in its open position 6. A prerequisite for the illustrated movement of the throwing arm 3 against the predetermined direction 7 is that the 2 shown upper securing element 8 is not engaged with the locking pin 11.

6 shows the folding device 1 according to FIG 4 , with folded limb 3.

The throwing arm 3 is now folded in the predetermined direction 7 . The pawl 4 and the safety element 8 are not engaged with the throwing arm. In the same way, the folding process can be carried out on the lower throwing arm 3 in order to transport or store the folding device 1 or a corresponding bowed weapon.

By moving the limbs 3 out of the folded position against the predetermined direction 7, the bow can be unfolded again or stretched with the string attached.

7 shows an isometric exploded drawing of a folding device 1.

A spring 9 is provided on each of the pawls 4 so that the pawls 4 engage automatically when the limbs 3 are unfolded.

In the illustrated embodiment, the spring 9 is designed as a torsion spring and sits within a spring holder 19 which is supported on the respective pawl. In order to apply a preload, the springs 9 are supported in the mounted state with one end on the spring holder 19 and with another end on the shaft connection section 2 . In this way, the springs 9 exert a preload on the respective pawls 4 . This bias causes the pawls 4 to automatically snap into the closed position 5 when the limbs 3 are unfolded against the predetermined direction 7 as soon as the limbs 3 are unfolded or stretched far enough.

To produce the folding device 1, the respective locking pawls 4 and securing elements 8 are pivotally attached to the shaft connecting section 2 via the bearings 18, here by way of example one above the other and by means of the same fastening means 26, which are designed here by way of example as screw bolts with the associated nut 27. Analogously, the limb mounts 10 are offset to the pawls 4 and safety elements 8 by means of fastening means 28, here for example also screw bolts, articulated via the bearings 18 on the shaft connecting section 2 so as to be pivotable. In addition, the respective locking pins 11 are passed through the recesses of the limb mounts 10 and fastened. The pawls 4 are each placed on an inside within a space accommodating the throwing arm, and the securing elements 8 are each placed on an outside outside the space between the throwing arm mounts 10 .

The locking pins 11 are each fastened in recesses of the limb mounts 10 for this purpose, for example, passed through the recesses.

The securing elements 8 are articulated on the shank connection section 2 in such a way that they can be brought into engagement with the locking bolts 11 . The pawls 4 are received within the legs of the limb mounts 10 in such a way that the respective hook 17 can be brought into engagement with the safety bolt 11 .

The attachment of the limbs 3 within the limb mounts 10 is realized via the fasteners 15, here by way of example screws. The fasteners 15 are to shank-side end of the limbs 3 with the respective limb mounts 10 attached to, here for example by provided in the limbs through holes.

8th shows a schematic representation of a bowed weapon 20.

In its illustrated embodiment, the bowed weapon 20 is made up of several components. The shank 21 forms the component which connects all the main assemblies together. It has an elongated shape consisting of a front and rear stock. The forearm is designed to accommodate several components, including the folding device 1 via the stock connection section 2 . The connection can be realized using any type of fasteners, rails, clamps or the like. For example, the shank connection section 2 is screwed to the shank 21 . The assembly of the folding device 1 via the shaft connection section 2 on the bowed weapon 20 is therefore easy to carry out.

The stock, here for example a full stock, is shaped to support and stabilize the bowed weapon 20 during use. The rear stock can also be implemented as a folding or slide-in stock and is designed to be supported in the shoulder area of a user. In addition, a trigger 22, a nut 23 and a sight 24 are also provided for the use of the bow weapon. The trigger 22 is mounted on the underside in the center of the shaft 21 and can be actuated by the user, for example with a finger. The nut 23, which is designed to accommodate the tendon 23, is released via the trigger 22. When the limbs 3 are unfolded and the string is clamped in the nut 23 , the string is released by actuating the trigger 22 in order to accelerate projectiles, in particular arrows, in the firing direction 25 . The visor 24 sits approximately opposite the trigger 22 on the upper side in the middle of the stock 21. Depending on the application of the bowed weapon 20, the alignment of the firing direction 25 can be specified via the visor 24.

Although the present invention has been fully described above on the basis of preferred exemplary embodiments, it is not restricted to them, but rather can be modified in a variety of ways.

For example, other types of fasteners can of course be used in addition to screws as fasteners.

Furthermore, the shape of the limb mounts 10 in particular can deviate from the shape shown. For example, instead of a double-T profile shape, the limb mounts can also have a U-profile shape or other shape suitable for pivoting limb mounts.

Furthermore, the most varied configurations of the pawls 4 are conceivable. For example, instead of the hook 17, other types of connection can also be used, for example a snap connection or a screw connection. It would also be conceivable to divide the pawl 4 into two components in order to realize the form-fitting enclosing of the locking pin 11 with two parts.

reference list

1

folding device

2

shank connecting section

3, 3a

throwing arm

4, 4a

pawl

5, 5a

closed position

6

open position

7

predetermined direction

8, 8a

fuse element

9, 9a

Feather

10:10a

limb mount

11:11a

locking pin

12:12a

tendon stopper

13

projectile guidance

14:14a

fasteners

15:15a

fasteners

16:16a

operating range

17:17a

hook

18:18a

warehouse

19:19a

spring mount

20

bow weapon

21

shaft

22

Deduction

23

nut

24

visor

25

shot direction

26

fasteners

27

nut

28

fasteners

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• GB 2131706A [0005]

Claims (15)

Folding device (1) for a bow weapon, in particular for a crossbow, with a shank connection section (2), with two throwing arms (3), which each have a free end and a shaft-side end pivotably mounted on the shaft connection section (2), with two pawls (4), which are each mounted pivotably on the shaft connecting section (2), the pawls (4) being pivotably arranged in such a way that the limbs (3) each have a closed position (5) of the respective pawls (4) for Unfolding and/or stretching of a bow can be fixed and in an open position (6) of the respective pawls the limbs (3) are each released for folding. Folding device (1) after claim 1 , characterized in that the throwing arms (3) can be folded in a predetermined direction (7) and the locking pawls (4) when the bow is unfolded by means of a movement of the throwing arms (3) counter to the predetermined direction (7) for pivoting from the closed position (5 ) can be released into the open position (6). Folding device (1) after claim 2 , characterized in that safety elements, in particular safety pawls (8), are provided for securing the limbs (3) against unwanted movement counter to the predetermined direction (7) when the bow is unfolded. Folding device (1) after claim 3 , characterized in that the securing elements (8) are designed to be pivotable independently of one another. Folding device (1) according to one of claims 2 until 4 , characterized in that a spring (9) is provided on each of the pawls (4), which exerts a pretension on the pawls (4) so that the pawls (4) move counter to the predetermined direction when the limbs (3) are unfolded (7) snap into the closed position (5) automatically to fix the limbs. Folding device (1) according to one of the preceding claims, characterized in that the throwing arms (3) are pivotable independently of one another for folding and unfolding. Folding device (1) according to one of the preceding claims, characterized in that the pawls (4) are designed to be pivotable independently of one another. Folding device (1) according to one of the preceding claims, characterized in that the throwing arms (3) are each mounted on the shaft connecting section (2) by means of a pivotable throwing arm mount (10). Folding device (1) after claim 8 , characterized in that the pawls (4) and the safety elements (8) can each be brought into engagement via a locking pin (11) fixed in the throwing receptacles (10), in particular via the same locking pin (11), and/or that the Limb mounts (10) are designed with a recess for accommodating the respective limbs (3) and/or locking bolts (11), in particular at least in sections with a double-T cross-section. Folding device (1) according to one of the preceding claims, characterized in that the shaft connection section (2) is designed for connection to a shaft of a bowed weapon, in particular a crossbow, preferably as a hollow profile, particularly preferably as a U-profile. Method for producing a folding device for a bow weapon, in particular a crossbow, with the steps: Providing a shaft connecting portion (2), two limbs (3), two limb mounts (10), two locking pins (11) and two pawls (4); Attaching the locking bolts (11) to the limb mounts (10); Pivotable articulation of the throwing arm mounts (10) on the shaft connecting section (2); Pivotable articulation of the pawls (4) on the shaft connecting section (2) offset to the limb mounts (10) in such a way that the pawls (4) can each be engaged with a locking pin (11) fastened to the limb mounts (10); and Attach the limbs (3) to the limb mounts (10). Method for manufacturing a folding device claim 11 , characterized in that a further step of the pivotable articulation of two safety elements (8) on the shaft connection section (2) is provided, such that the safety elements (8) are also each connected to one of the locking bolts (11) fastened to the limb mounts (10) in intervention can be brought. Method for manufacturing a folding device claim 12 , characterized in that the pawls (4) each on a first side, in particular on an inner side within an intermediate space accommodating the throwing arm, and the securing elements (8) are each placed on a second side, in particular an outside outside the space between the limb mounts (10). Method for manufacturing a folding device Claim 13 , characterized in that the locking bolts (11) are each fastened in recesses of the limb mounts (10) and for this purpose extend in particular through the recesses. Bow weapon (20), in particular a crossbow with a shaft (21); and a folding device (1) according to one of Claims 1 until 10 and/or produced by a method according to one of Claims 11 until 14 , which is connected to the shaft (21) via the shaft connecting section (2).

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